MXPA97009248A - Elastic waist system with improved elasticity module for training shoe for n - Google Patents

Abstract

The present invention relates to a disposable absorbent training pant for a child having an improved waist system. The elastic waist system has a selected average maximum rate of modulus of elasticity change over the first three cycles within a specified range of extension, thus providing essentially uniform low tension over a wide range of sizes, a more comfortable notch and ease of use improves

Description

ELASTIC WAIST SYSTEM WITH IMPROVED ELASTICITY MODULE FOR CHILDREN'S TRAINING SHOE Background of the Invention The present invention relates to disposable absorbent training pants for children, and more particularly to improved elastic waist systems for the same.

The current disposable absorbent training pants for children going through the toilet training phase have proven to be particularly desirable and are a useful product. This is especially true for the child when he or she has grown up or thinks he has grown beyond diapers. Diapers are for babies, and most children do not want to be identified with babies or babies. As a result, these children do not want to use baby diapers, and instead prefer to wear a training pant that resembles adult underwear.

One problem with current training pants, however, is that they do not provide optimal comfort and ease of use, for example, ease of climbing or lowering, over a wide weight range and for an extended period of time. of time. This discomfort, and the difficulty in raising or lowering, often frustrates the child to the point where toilet training is delayed due to the child's discomfort and difficulty in using the product.

One reason why current training pants do not provide optimum comfort and ease of use is the fact that a size of training pants is intended for use by children within a particular range of sizes or weights. This requires a unique size training pants that will fit children with different waist sizes. In practice, this means that the training pants will not provide essentially uniform low tension over the range of waist size required. For example, a specific training pants size can be designed to fit children within a weight range of 25-35 pounds. This weight range includes a wide range of waist sizes. Generally, the training pants will adjust to a particular weight, for example, an intermediate waist size, well enough to provide some degree of satisfaction. However, at the end of the low weight, the smaller waist size, a waist elastic must be used to fold the excess material into the waist opening. However, the tension provided by the retracted elastic waistband may be too high, thus causing discomfort and / or difficulty in raising or lowering the training pants for children of smaller to intermediate size.

At the high end of the weight range, where the size of the waist is the largest, the elastic waistband will extend to its maximum allowable length to accommodate the larger waist. However, when it is fully extended, it can exert a very high tension against the child's waist. Again, this results in discomfort, in a possible marking in red, and in a difficulty in pulling the pants up and down thus delaying the training for the toilet.

Therefore, the fact that a single-size training pant is designed to fit a wide range of weight has prevented them from essentially providing uniformly low stresses over the corresponding waist size ranges over an extended period of time.

Despite this, it is an extremely desirable feature, which, if available, will provide comfortable training shorts for the child and the ease of uploading or downloading. Therefore, as a child grows to a weight and when moving from that weight range to a specific training shoe size, then the child will have essentially uniform strength or tension at the waist during that period of use of the training pants. of specific size; but this feature is not available in disposable absorbent training pants for current children.

Several designs of elastic waistbands have been used in these training pants, such as a single broad elastic member or a plurality of narrow elastic members. Waist bands can completely, or only partially, encircle the waist opening. Generally, these elastic waist bands are incorporated by one of two methods. The first method incorporates the elastic waist bands when they are in a stressed and extended state. The second method incorporates elastic waistbands while these are in a non-stressed and relaxed state. The latter method may require the use of a special elastic material, such as a heat-elastic material.

In both of these methods, elastic waistbands are generally attached to multiple layers of material. For example, the elastic waistbands can be adhesively bonded between two adjacent layers of material such as, for example, the topsheet and the backsheet of the training pants. In some cases, the elastic waistbands are adhesively bonded first to a carrier sheet of material, and then the carrier sheet and the elastic waistbands are adhesively bonded between the adjacent layers.

Adhesive application in these methods is generally achieved by partially or completely coating the surfaces mutually in front of the adjacent layers, or by applying the adhesive in a bead or bead to at least one of the layers. The latter method usually involves a continuous count pattern, such as an adhesive wave type pattern.

Other method or patterns for the application of adhesive are available, and include the attachment of the elastic waistbands along their total or complete length to the multiple layers of material.

Synthesis of the Invention In one form of the present invention there is provided a disposable absorbent training brief comprising a frame including a front panel, a back panel, a crotch panel and an absorbent structure on the crotch panel, in which the front panels and posterior, when joined together, form a waist opening and leg openings. An elastic waist system is provided around the waist opening, and has a maximum average rate of modulus of elasticity change over the first three cycles of about 2.50 grams per millimeter in an extension range of between about 175 millimeters to around 325 mm.

Description of the Drawings The above-mentioned and other features of the present invention and the manner of achieving them will become more apparent and the invention itself will be better understood by reference to the following description, taken in conjunction with the accompanying drawings wherein: Figure 1 is a partially cut-away front perspective view of a training shoe for a child incorporating the principles of the present invention; Figure 2 is a cross-section through the waist of the pants of Figure 1 illustrating one embodiment of the present invention; Figure 3 illustrates another embodiment of the present invention; Figure 4 is a schematic diagram illustrating a method for making a modality similar to that of Figure 3; Figures 5 and 6 schematically illustrate a method for making a modality similar to that of Figure 2; Y Figures 7-13 are graphs comparing the first three cycles of a training brief incorporating the principles of the present invention against the first three cycles of a current training brief product.

Definitions Within the context of this description, each term or phrase below includes the following meaning or meanings. These terms may also be defined or used in conjunction with additional language to further expand their meaning in this description. (a) "Associated with" refers to the fastening of an elastic member, or of an elastic structure, to another element such as the elastic member, or the elastic structure, when attached to, placed with, or formed of the elements, gives that element elastic properties. Thus, the attached elastic member and the other element exhibit elasticity. (b) "Cycle" refers to an extension of an elastic member or an elastic structure, and a retraction of the elastic member of the elastic structure after the removal of the force that causes the extension. (c) "Decay" refers to a loss of tension in a specific extension over a selected number of cycles. (d) "Disposable" means a garment, article, briefs or the like, which is designed to be worn until it becomes soiled, since fifteen . either by urination, defecation or otherwise and then discarded, rather than washed and reused. (e) "Placed", "placed on", "placed with", 20 and variations thereof, refer to an element forming an integral or unitary part with another element, or to an element being a separate structure attached, connected to, placed with, or placed near another element. 25 (f) "Elasticity" refers to the tendency of a material, or a composite material, to regain its original size and shape after the removal of force. caused a deformation. The elasticity can be expressed in percent. (g) "Elongation" refers to the ratio of the extension of a material to the length of a material before the extension, and is presented by the formula: extended length less original length x 100. original length 15 Elongation can be expressed as a percent. (h) "Extension" or variations thereof are referred to the change in length of a material due to stretching, and may be expressed in units of length. (i) "Hysteresis" refers to a loss of tension over a specific number of cycles within a specified range of extension. (j) "Union" or variations thereof refers to two or more elements that are connected together in any suitable manner, such as by sealing by heat, ultrasonic bonding, thermal bonding, adhesive bonding, sewing, or the like. The elements may be directly joined together, or they may have one or more elements interposed therebetween, all of which are connected together. (k) "Member" when used in the singular may have the dual meaning of a single element or a plurality of elements. 15 (1) "Modulus of elasticity" refers to a constant that measures numerically or represents the amount of elasticity that a material possesses. 20 (m) "Retraction" or variations thereof refers to the decreasing change in length of an extended material with the removal of the force that causes the extension. 25 (n) "Elongated sleeve member" refers to a structure having an elongated conduit there. The sleeve member may be formed by a layer of material bent over itself, or by two or more layers of material being selectively joined to form the elongate conduit. (o) "Tension" refers to a force that tends to cause the extension of a body, or the force of swaying within the body resisting extension. The tension can be expressed in units of grams. (p) "Waist edge" refers to an edge around the waist opening of a training pant, and may be constructed of one or more layers of material.

Detailed description The present invention provides an improved elastic waist system for training pants for children which results in essentially uniform low tension along the peripheral edge of the waist opening over a wide size range, a more comfortable notch, and an improved ease of use by the child for a period of extended use. This is achieved by, among other things, reducing the number of layers of material, for example, the mass or amount of material, which must fold the elastic waist system. The more material you have to fold, the more the elasticity will be degraded or reduced by folding the excess material. The present invention reduces the number of layers or the amount of material to be folded by incorporating an elastic member in, for example, a layer of material thereby reducing the loss of elasticity.

The present invention selectively reduces the attached surface area or the number of attachment points between the elastic member and its respective layer to which it is attached. For example, the elastic member may not be fastened along its entire length to the layer. The present invention provides a plurality of different adhesive zones spaced apart and selectively separated. By reducing the bonding surface area between the elastic member and the material layer, there is a resulting reduction in the loss of elasticity of the elastic member.

With reference to Figure 1, a disposable absorbent training pant 20 comprises a frame 22 including a front panel 24, a back panel 26, a crotch panel 28, a waist opening 30, a pair of leg openings 32. openings 30 and 32 are formed by selectively joining parts of the front panel 24 and the back panel 26 to the side seams 34 which extend between the waist opening 30 and a respective leg opening 32. Each side seam 34 can formed in any suitable manner, such as by an ultrasonic joint, a thermal bond, an adhesive bond or the like. A waist edge 36 peripherally surrounds the waist opening 30 and is formed by joining the front panel 24 and the back panel 26 at the seams 34.

Referring now to Figures 1 and 2, frame 22 includes an absorbent structure 38 positioned in at least one crotch panel 28. Absorbent structure 38 includes an absorbent end edge 40, and has a length dimension 42 (Figure 6 ) which is greater than a width dimension 44. The frame 22 further includes an outer cover layer 46 and a liner 48, which have a sandwich shape to the absorbent structure 38 therebetween. The liner 48 is desirably a single layer of a liquid permeable material, but may also include other layers of material. The outer cover layer 46 is desirably a two-layer material that includes an outer layer 50, which can be made of a material permeable to the non-woven liquid, and an outer layer 52 which can be made of a material impervious to the liquid. . The outer layer 50 and the inner layer 52 can be joined together in any suitable manner such as by means of the adhesives 54. The liner 48 is desirably joined to the outer cover layer 46 by the adhesives 54, thereby placing the sandwich shape in the form of a sandwich. absorbent structure 48 between them. As described, the frame 22 is a multi-layered structure comprising the outer cover layer 46 and the liner 48.

The waist edge 36 (FIG. 2) may also be a multi-layered structure comprising the outer cover layer 46 and the liner 48. The waistline 36 desirably includes an extension of one of the frame layers 22, e.g. , an extension of the outer layer 50 (figure 2). This extension forms a peripheral edge portion 58 peripherally surrounding the waist opening 30.

Although described above with reference to a specific design and materials, the training pants 20 may have other designs or constructions. Examples of other representative training pants are described in U.S. Patent No. 4,940,464, the contents of which are incorporated herein by reference, and in U.S. Patent No. 4,641,381 whose contents are also incorporated herein by reference. by reference.

With a continued reference to Figures 1 and 2, a separate elastic waist system 60 is associated with the frame 22 around the waist opening 30. The waist elastic system 60 includes an elongated sleeve member 62 which defines therein a elongated conduit 64, and an elongated elastic member 66. The elongated sleeve member 62 can be formed from a layer of material, such as a material permeable to the non-woven liquid, by bending the material in a C-shaped configuration comprising an outer surface 68 (Figure 2) and an inner surface 70 which defines an elongated conduit 64. The outer surface 68 and the inner surface 70 may be joined together in any suitable manner, such as by adhesive 72. The adhesives 72 join only the outer surface 68 and the inner surface 70 together, and do not contact the elongate elastic member 66, which is essentially free to move in the elongated conduit 64.

The elongated sleeve member 62 is attached, such as by adhesive 74 to the peripheral edge portion 58 (FIG. 2) such as that portion of the sleeve member 62 containing an elongate elastic member 66 extending outwardly beyond the edge of the sleeve. end 59 of the peripheral edge portion 58. Desirably, the elastic waist system 60 is attached to only one of the layers comprising the frame 22, such as the outer layer 50, for purposes to be explained hereafter. Within the elongate conduit 64, the elongated elastic member 66 has an outermost peripheral edge 76, and an innermost peripheral edge 78 is positioned at a selective distance from the absorbent end edge 40. Even when the elongate elastic member 66 is illustrated in figure 2 as a single ribbon of elastic material, this may comprise a plurality of ribbons or elastic threads. In the case in which the elongated elastic member 66 is a plurality of threads or tapes, the outermost peripheral edge 76 will correspond to the outermost peripheral edge of the outermost tape or thread, and the innermost peripheral edge 78 will correspond to the outermost peripheral edge. the innermost peripheral edge of the innermost tape or thread.

Since the elastic waist system 60 is a structure separate from the frame 22, the elastic waist system 60 can be made and constructed of any kind of desired material independent of the materials of which the frame 22 is made. This provides flexibility increased in the design and construction of the elastic waist system 60.

In an embodiment hereinafter also referred to as Modality 1 of the disposable absorbent training pant 20, the outer cover layer 46 comprises an outer layer 50 made of a polypropylene fabric bonded by liquid permeable yarn having a basis weight of about 20 grams per square meter and an inner layer 52 made of a polyethylene film of 0.0015 centimeters. The liner 48 can be made of the same material as the outer layer 50 and made hydrophilic by treating it with a wetting agent, or it can be made of a hydrophilic material. The absorbent structure 38 may comprise a uniform blend of any suitable superabsorbent material and erases wood pulp, with the mixture enclosed in a tissue wrapper to maintain the integrity of the superabsorbent material and the fluff. The sleeve member 62 can be made of a non-woven fabric of bicomponent fibers in a side-by-side orientation, in which the fibers are present in the amount of about 50 percent polypropylene fibers to about 50 percent of polyethylene fibers. The sleeve member 62 desirably has a basis weight of about 17 grams per square meter and is constructed in the C-fold configuration to have a width of about 2.38 centimeters (15/16 inches) and a relaxed length of 73.66 centimeters (29 inches), for example, a circumferential length of about 73.66 centimeters. The elastic member 66 is made of a natural rubber material, and has a thickness of about 7 mils, a width of about 0.79 centimeters (5/16 inches), and a relaxed circumferential length of about 28.58 centimeters (11.25 inches) ). A process for building an elastic waist system 60 includes providing two stretches of natural rubber having the respective relaxed lengths of about 14.28 centimeters (5-5 / 8 inches) (one half of the relaxed circumferential length) and two stretches of the nonwoven fabric described above having respective relaxed lengths of about 36.83 centimeters (14.5 inches). Each stretch of natural rubber has a width of 0.79 centimeters (5/16 inches), and each stretch of non-woven fabric has a width of about 4.83 centimeters (1.9 inches) (twice the width of the C-fold configuration). 15-16 inches). Both stretches of natural rubber are stretched for about 36.83 centimeters (14.5 inches) and placed on a stretch of respective nonwoven fabric having a length of about 36.83 centimeters, with the ends of each section of natural rubber being joined to the ends of a respective stretch of nonwoven fabric. Each section of nonwoven fabric is folded at C over its respective natural rubber section. The two resulting compounds, comprising a natural rubber section and a nonwoven fabric section are joined at their ends to form a closed circuit elastic waistband, such as an elastic waist system 60. The compounds can be bonded together at a relaxed state or in an extended state. The closed circuit elastic waistband has, in its relaxed state, a circumferential length of about 73.66 centimeters (29 inches).

The elongated sleeve member 62 and the elongate elastic member 66 can also be attached to the frame 22 at the seams 34 at the same time that the front panel 24 and the back panel 26 are joined to form the seams 34. Thus, between the seams 34 (figure 1), and elastic member 66 is free to move within conduit 64.

The elastic waist system 60 provides the characteristics of an essentially uniform low tension over a wide size range, a more comfortable notch and an improved ease of use over repeated uses of the training pant 20. A repeated use refers, for example , to the child lowering the training shorts to go to the bathroom or raising the pants. It has been found that this type of repeated use with the current training shorts results in an essential loss of elasticity around the waist opening 30. To refer to this loss of elasticity over repeated uses, the current training shorts incorporate the elastic waist with a relatively higher tension for the purpose of compensating for this loss of elasticity by repeated use. However, this relatively high tension of the waist elastic results in an uncomfortable notch, in a red marking and / or in a difficulty in raising or lowering the pants, all of which is undesirable for both the child and the parent or the child. carer.

In the analysis of this discovered problem, applicants have found that an important factor that refers to these desired characteristics is the average maximum rate of change of modulus of elasticity over the first three cycles, which will be described in greater detail below. Figures 7-13 compare the first three cycles of use of Modality 1 against a current training brief. A cycle represents an extension and a retraction of the waist elastic, which usually occur when the child raises or lowers the training pants. In figure 7, the first three cycles of Modality 1 are identified by the caves identified as cycle 1, cycle 2 and cycle 3. Cycle 1 comprises an El extension and a Rl retraction, in which the El extension begins at the point A and ends at point B and retraction Rl begins at point B and ends at point C. Each point A, B and C represents a specific tension in grams at a specific extension in millimeters. Cycle 2 has an extension E2 and a retraction R2, and a cycle 3 has an extension E3 and a retraction R3.

In comparison to the three cycles 1, 2 and 3 are the first three cycles 1 ', 2' and 3 ', of a current training brief, identified as Sample 1. When cycles 1, 2 and 3 are compared with the cycles 1 ', 2' and 3 'of Sample 1, cycles 1', 2 'and 3' of Sample 1 have a much higher tension in grams over the extension range of 175 to 325 millimeters than cycles 1, 2 and 3. When taken over an extension range of about 175-325 millimeters, Mode 1 provides a substantially more uniform lower voltage for the first three cycles than Sample 1.

Figures 8-13 are similar to Figure 7 in the sense that each of Figures 8-13 compares the first three cycles 1, 2 and 3 of Modality 1 with the first three cycles 1 ', 2' and 3 'of Samples 1-7, respectively. Note that the scales of the Y-axes which represent the load c tension in grams are different in Figures 7-13 in order to illustrate the comparisons more clearly.

Sample 1 (figure 7) was manufactured by The Drypere Corporation, was generally identified as the Big Boy and Big Girl product and was obtained from a product package having a bag count of 13 for boys and girls weighing up to 36 pounds.

Sample 2 (Figure 8) was manufactured by Kimberly-Clark Corporation, and is identified as the training pant product of the HUGGIES® PULL-UPS® brand and was obtained from a product package having a bag count of 16 children weighing 29-36 pounds and girls weighing 25-34 pounds.

Sample 3 (figure 9) was manufactured by Paragon Tade Brands and is generally identified as a Kids Pants product, and was obtained from a product package having a 20 bag account for boys and girls in the weight range of 24-33 pounds.

Sample 4 (figure 10) was manufactured by The Procter & Gamble Company, was generally identified as the Pampers® Trainers® product and was obtained from a product package having a bag count of 16 for boys and girls weighing 23-34 pounds.

Sample 5 (figure 11) was manufactured by Pope & Talbot and was generally sold through the Vons store chain, and was obtained from a product package having a bag account of 16 for boys and girls weighing 27-36 pounds.

Sample 6 (figure 12) was made by Molnlycke Consu er Products AB, was generally identified as the product Libero Up & Go, and it was obtained from a product package having a bag account of 22 for boys and girls weighing 20-33 pounds (9-15 kilograms).

Sample 7 (figure 13) was manufactured by Uni-Charm Corporation was generally identified as the Oyasumi Man product, and was obtained from a product package having a cash count of 8 for boys and girls in the size range of 85-105 centimeters.

All products representing Samples 1-7 were generally purchased in late 1994 or early 1995.

Regarding the description given here, a modulus of elasticity is a constant that numerically measures how much elasticity a material possesses, such as an elastic waist system 60. A constant, with reference to figure 7, for example, is the inclination represented by any two points on a curve of any one of the illustrated cycles. A maximum average change rate of modulus of elasticity is calculated by averaging a selected number of inclinations taken at specific points of a particular curve. Each curve of each cycle, and this includes the part representing the extension and the part representing the retraction in the cycle, has a calculated inclination in each increment of 25 millimeters within the extension range from 175 millimeters to 325 millimeters. The lower average slope, either during an extension, a retraction or a cycle of Modality 1 compared to the upper average slope of any of Samples 1-7, indicates an essentially lower rate of increase in tension over a range of size broad than any of Samples 1-7.

The maximum average modulus of elasticity change rates over the first three cycles are calculated from the data presented in Tables 1-9.

TABLE 1 MODALITY 1 TABLE 2 TABLE 3 SAMPLE 1 TENSION (grams) 'Tilt tension / retraction (mm Specimen l Specimen 2 Specimen 3 Specimen 4 Specimen S Average (g? (G / mm) Extension 1 17t 101.M M0.1l 101.07 110.M 101. »1M.M LM MO MI »tßt.07 MO.lt trt.tr 104.77 170.» 1.07 11 »117.07 140.11 3M.10 141.04? A.» 317.M 1 11 tM 3M.04 414.07 411.01 410.M 4M.M 410. »4.M 171 4M.M 130.44 ti 1.74 oir.n 4M.04 «11.1 * U? T MO 070.01 0M. 1 0M.41 7M.M 070.01 7M.M 44.00 ttt 1077.01 21M43 10M.W 1147.M «0M.41 IMt.10 1 Retraction 1 tts 1077.01 11 J3 10M.lt 114T.M 10M.4t «040.10 5S JT! MO 440.44 471.M 401.70 4M.M 4 * 0.11 401.01 4.is | 170 111.04 301.07 SM.a t-07 101.77 1 * 7.77 1.40 tM 1M.14 1M.14 MO.M MI.14 MO.M M0.47 I tl ttt Ml.M 144.71 140.M 141 * 1 IM.M 1M .M 1.17 tM 17t.TT 1 .07 iM.a 111.41 1tt.4t 101.11 1.74 170 1M.M 117.M 111. »111.47 111.47 til.» Extension 2 171 140.M 100.70 1M.M i4t.tr 101 M MO.M 1-tt MO MUÍ m.M «4.71 114.71 M4.J? «0.01 t-M ttt M4.M MJt MI .47 MO.M M4.M MO.M 1.74 tß» MI .04 M7.11 1M.11 M4.M 1 * 1.77 1M.11 uoj 170 411. M 40S.M 444.M 4M.M 4U? T 443.M 0.07 OM SM.01 030JM 010.11 U4.11 S0AJ1 011.41 47 J3 tts 10M.7S 10M.47 141S.00 12M.10 1011.14 1011.11 Retraction 2 its 10M.7S 1 * 14.47 1410.M MM.10 1011.14 1t11.1l S4.4I MO 440.04 400. 1 4S1.07 4M.M 447.11 440.M 3.M 170 M7.M 1 * 1.77 MI.04 3U.77 M1 M M1.M 1.47 tM »t.l7 101.47 MI.47 H1.47 MI «7 MO.» 1.14 ti »M1.40 130.07 MO.M 1M.07 MO.OT no.» 1. »MO 171M 1M.lt 171.77 170.M 101.40 170.M 1.70 17i 104.17 ttt.ro 1M.M 1M.M 111. »1M.M Extension 3 170« 17 JO 140.07 140.17 140.17 140.17 141. YES 3 00 MO 111.17 114.71 1M.17 «0.17 113.M 110.M 1.00 ttt MtS7 M7.M 101.17 MI .47 111 * 7 100.14 1,001 tM 340 H 1U.77 3M.77 SM.77 M1.M llt.43 1.44 170 431.04 440.44 430.M 441.77 431.04 4M.31 0J4 MO 074.04 014.M MO.M 014.M ttt.10 • M.71 41.00 llt 10 ».M 10M.70 13M W ltM.41 13M.M 1004?» ...,, __, 1 Retraction 3 111 10MM 10M.70 13M.M «M. t 13M.M I004.M 40.70 < MO 4M.M 440.44 447.M 440.44 441.77 444.M 1.04 | 17 »344.07 340.31 340.31 301.M 140.» 340.07 1 YES! tM 1M.S7 M4.M 104.M IM.S7 M7.M 114.3 »1.01 i 11 »1M.M Mt.M 113.01 IM.ßt 13S.M 111.10 2.30 ' MO 100.10 170.M 171.7T 17I.T7 iM.a 171.77 1.70. 170 «01.30 111.M 101.M 104.07 100.01 1 109.01 1 TABLE 4 TABLE 5 SAMPLE _3 TABLE 6 SAMPLE 4 TABLE 7 SAMPLE 5 • TENSION (grams) [inclination nsión / retraction (mm; Specimen 1 Specimen 2 Specimen 3 Specimen 4 Specimen 5 1 I r edio (g) (g / mm) 17S 1M.17 1 * 34 * 110.07 141. »« 0.17 no. »1.01 Extension 1 MO M0.14 111.17 307.04 M4. «M3.M 304.a 251 as 101.07 3 * 0.47 S70.M 307.11 3U.77 1M.01 1.10 tM 4M.M 450.34 4M.1t 4M.M 413.17 440.44 4 * 3 171 MtM $ 00.14 S71.M MO.lt • 41. »? I3.a 0.17 MO 7M44 772. »014.34 7M.40 7M.» 701.71 M.07 ttt 1SM.01 17M4I 177141 1401 »17M» 1004.40 its 1tM.lt 17M4 * 177 * 41 1401 »17M40 1004.40 41 S Retraction 1 MO 401.70 400.47 411.07 4M.44 4U44 411.14 4.M 171 140.41 347.M 33142? 31.M 141.74 1M.M 1.1S tM «147 M4.M 171.07 173.07 17I.M 270.11 147 Ut 141. »140.07 1U.M 1M.H« O.M lll.M, 47 MO Mt.47 1M.1S 101.17 1M.M 1M.M 1M.M l.M 17 * 1 * 14 * 104.M 140.17 140.07 144. »140.M Extension 2 17 * 1M.M 100.01 17040 1» »1M.B« lt.1t t.u MO Ml. »101.» 244.70 tM »144.7» tM »tM u 111.04 314.M 1M.17 111.04 111.» 11040 1 » MO M7.14 your. »M7.14 M7.14 102.» M7 »1.77 170 471. »4M.17 40141 47047 47 * 47 401.» 741 MO 0M44 071.04 Ml. »040.» MS44 «07.» UM t 1441.70 10M.77 15M4 * 1114 »1M0.41« 404.40 Retraction 2 s »1441.» 10M.77 1ß »4 * 1114» 10M.4I 14M. M 41.71 MO 444.M 4 * 1.07 4M. »4M4T 4M.M 441.» 444 17 * M1 1 1M.10 S14.M! «.« Ai. »117.» l.M MO ai. »110.M Mß.a M041 M7.M 172.14 1» tu m »242.U« 0.17 M1.40 «0.» «1.71 1.» MO 1M.M Mt.47 1M.W 101 »1M.M 101.» 1. » 171 140.17 itr.or «17.» 140.17 140.17 14S. »Extension 3 171 170.77 101.» 1M.10 101. »171. tt 170.» 1.07 MO 144.7 * 15S.07 M0.07 140.07. "1.17 144.7 * 1.47 at M7.M 11 OM 104.11 107.04 M0.14 3M.M 1.17 tM 3M.47 301. M 171.70 171.M MO.M 37 * 44 lM ai 471.M 400.00 40744 4M.U 40744 470. »1.04 OR U4.11 040.M 014.11 1« M 040.70 OM.M 10.IS ta 17U47 1404.01 141043 1IM4I 11M41 100140 Retraction 3 til 17M47 1404.01 «41043« SM.M 10 »4S« M1.M 44.01 1M 441.7T 440.44 433.07 414.07 4 * 1 07 4M.M 4.41 171 3M.74 110.07 310.M 111.17 1M.M 11171 1.14 | 1M 170. »trt.n 104.77 M4.77 M4.77 M0.07« u tts tu.u 140.M 114.71 110.17 1M.M 111.40 1 M MO 1M.07 101.47 «04 07 1M.1t 1M.M 101.M I« S 17S 117. »100.70 isi.a« 17 »117.M 140.17 TABLE 8 SAMPLE 6 TENSION (grams) Tilt 'Specimen 2 Specimen 3 Specimen 4 Specimen 5 (g / mmi Extension / retraction (mm) Specimen 1 Average (g) 171 1M »101.43 MI 40 110 00 11141 117.11 4 II Extension 1 MO 117.M 304.7 * IM.It la. »31I.M 311.» 3 07 40141 41141 3 74 1M 4 «.M 309.M 4M! T 41S.M 907.10 401.01 IM.74 4 30 IM 1M. M 407.10 017.M 171 0M40 • 01.71 0M.43 010.41 MS.M • 11.74 0 44 MO 0M.71 747.43 003 04 7M.70 747. »77T.M 10.79 ttt 12M40 114141 1M144 111144 111144 I1M41 I1M.M 11« « 01 tai.14 111144 111144 11M41 13.00 Retraction 1 1 »3» • 33. »Oot.u OM.M tM» 001. »• 10.M 9 M 179 901.71 4M 40 3M.41 4M 401.71 40440 1 0 MO 411» 301 1 4I0.M 407 M 1M .7S 404.41 1 14 as 117.M 311.41 3M.1t 124.77 til »3M.44 3.47 NO 13041« 4.07 291.37 «1.70« 347 1M.M 4.01 170 1M.47 12447 «40.04 IM.47 140.14 1M.I4 17141 1M. 10 1M.41 171 »171.M 4 M Extension 2 17 * MO 1M41 104.71 tM.1t tTO.M 17141 trr.tt 1 01 1 »17« .4ß 3M.M 10740 3M40 3M.14 107. »3.M 1» 4 ».» 440.41 470.04 4M 1 4SI 7 4M.1S 4.10 171 17141 94741 9M.M 00744 MO. » MI. »0 05 714» 004.04 73140 7M.71 0M44 714 »« 0 01 ttt 1U0.14 104041 IM1.7S 1103.34 1101.10 11M.M 104041 1M0.7 * 1 «03.14 1101.10 110040 Retraction 2 t 1M0.I4 010.41 MI. 71 a.ss 111.73 MI.71 M740 4M.W 471. »• 00.11 417.10 47044 4M47 404» 117. »4IS.7 * 4M.41 3M4 * 3M.07 tl» 4t 3M.M MI. »1M.» Til . »310.10 nor» 1M.M 144. »131.» ao.it Ml 4 * 17S 1 »4t 1H.11« 4t47 1M.M IU.47 1M.M 17S 104.01 1M.40 I77.M 1M40 1M.M 1M.M Extension 3 2M 171 »1SI.M lM.1t tTO.M M0.04 172.71 21 * 104.01 344.70 1M.M 107 04 3H.M 3 * 1.11 2M 4W.47 440.4 * 4M47 4M.M 44440 4S4 4 17 »9M41 SM41 907.14 1M.I2 S40.W 553.41 710.» 070.47 710.01 7M.M • MM M0 * «7« 0 1 »1110.01 1011.14 1M3.M 1141.40 1M7.M 11M.10 1» 1110.01 1011.14 1 M3.M 1143 40 100740 I1M.11 11 05 Retraction 3 1M Otl. »900 04 010.41 0M.M • 01.71 001.N 4 04 179 417.10 4M.37 4M.M 404 04 47140 401.01 1 45 1M 4M.41 llt.11 4M.M 3M 10 307.M 1M41 1 «0« 9 1M. »10143 3M.M 310.00 311.43 11 * 4 * 1 40 MO« 0.11 iii.oo 140 14 1M.11 1 M 1M M 4 00 «79 tM.M 119 OT 140.14 IM 1M.47« M .S7 TABLE 9 SAMPLE 7 TENSION (grams) I Inclination Extension / retraction (ram) Specimen 1 Specimen 2 Specimen 3 Specimen 4 Specimen 5 average (g) jg / mtn) 17 * 110.17 «MM 1M.17 10440 OO.M Extension 1 ute 1» 211.M «7.17 til.» 1M4I 170.17 104 01 tM tM MI .71 1M.M H1.7I tM.1t 241. »270.01 t t7 M7.M 171 3 17143 1M.M 30744 140» 1 47 17 * 4U44 4M 70 407.70 1 M 30741 4M.I0 7.03 7M4S 05149 077.M • 7147 IM.Tt • 33.40 «7 40 your MOJO« 007.00 11M41 1M0.02 1MI4 * 10M4I Retraction 1 your 1M0.10 «M7 00 I IM.OS« 03541 1M0.M 10M41 MM MO 474. » 404.34 4M.M 11540 1M.M 4M.M 4 I] at 342. »394.11 14040 2M.21 2M.U 3M» 1 51 1M 17144 M7.M 1M.M tM. »2M40 MI 41 1.40 MO» 2 «. 71 11 OM 1M.M 171.40 MO. »1 US» 191.4 »14041 110 04 104.» «MM 3.M 171 • 141 M40 40.77 40.M tt.tr Extension 2 171 oß.» 11.77 73.M 40.77 74 » SM 101. »10143« 71.17 1M.11 14244 170 »240 2M» MI. »1M.11? A.7i 21141 142.70 2.IT 110.» 141. »M144 MI.7S 171.10 314.47 3 24 17 * 411.» 4M.10 4 MM 1M.M MI 44 T 017 »OM H 011.» SM.M HO.MI »» 1140 1MI.M 1HI M 1071.71 IM0.0O • 7141 10MM Retraction 2 101044 1MI.M 1070.71 071 »10M» 14 11 4M.70 44340 440.a 17040 171 »411» 1 M 171 1M42 M7. »141.» MI .71 M1.07 111.1 * 1 »a .71 111.» 170.10 M1.lt 114.04 117.40 lM 11040 211. »171.17 1M4 *« W.77 lM 1M.M «40.» 1M.M «11.» 1M41 t ».« 0 3.M 17 * 4040 1741 4141 M.41 17 M MM Extension 3 171 TT M 0141 M41 0140 40. »a.to 1 M 173.71 114» 171.4 * 111.17 141.84 «MB 1 M 1M.M MS .M tM.1t 1 «.71 til.» 14141 1.M ttt.1t 1M * 7 1M M IOS 07 17144 1M.47 1 10 171 4M.70 410.47 4M.70 1 * 4.11 34S41 107 »OM 03141 MI 4 * IS7.M SM.M 4M.M M0.70 10 11 1 »10114 * 111144 111141 070.14 M2.12 IW1.M Retraction 3 3» «OIS.» 1111 34 l ili SO 070.04 M2.12 10 ».» 29 M 440.M 4 S 43041 171. M 100. »411.47 1 74 17S 3M40 34S.lt 14140 M7.M Mt.M 111» 1.99 MO.M 171 M 17344 «1.01? N.7i mu 1.41 MT.I1 110 M MO M 171 04 107.M IM.10 and tn 131.40 144.M 1M.M 111.M O0.TT 1M.M 1 40 171 40.TT 1 11 40 00 11 41 11 10 MUL? or ui o TABLE 10 xtension / Mode 1 Mode 2 Sample 1 Sample 2 Sample 3 Sample 4 Sample S Sample 6 Sample 7 Abstraction Avg. Avg. Inc Lin. prom. Inclin. t Prom. Incl. Prom Inclin. Prom Incl. In. Prom Inc lin. Prom. Inc] ín Prom. Inclin. 17500 11303 2.10 «1614 237 IMM 293 -267 3.03 412.42 773 .1.79 936 23952 2.93 217.11 416 11337 333 voltage 1 20000 10554« 70 17333 «M 270.30 297 72 M 4.M 00040 7.99« 37.90 eos 30447 293 ai »307 20401, 200 22300 21004 1 »22446« 63 337.30 292 1WS3 3.47 7M.03 9.13 3 ».19 6.17 36001 3.10 41341 374 27001 267 25000 24004 142 270 M« 67 41046 400 27949 2.97? A »40« «» 40341 932 449.44 4.33 909.74 4M 34032 347 27500 20524., 193 312 »100 512.19 917 343.01 2.31 1314.97 1970 02032 9» 55357 947 919.74 0 »439« 0 703 30000 32391 139 39733 1M 72090 44.99 409.73 251 170749 1991 76100 497 792.72 M07 777 »19.73 03340 17» 32500 302.22 40028 1643.13 499. »2202.» 87344 1664. »11» 33 10 »01 action 1 32500 362.22 343 400.2» 449 1643.13 33.37 496. »9.01 2202.» 30.73 • 7344 12.16 1694 »« 43 11M43 2300 10 »01 23.00 300.00 279.01 147 2 »03 206 MI .01 '4.13 2» .27 341 93449 «3.79 570.73 6» 499.34 449 01040 900 42954 413 273.00 232.21 1.41 242.07 1.93 397.77 2. »190.93 25 4 SM. »797 406.51 997 339.» 24S 49449 3 »32650 2.» 25000 107.13 1.44 20449 «.39 299.47 2.21 117.01 2.94 M7.74 990 2M47 340 279.12 147 404.41 324 26191 2» 22300 10100 140 «« 34 «64 24040 247 93. »244 29049 493 132.02 446 239.99 157 323.44 347 20000 2M 20000 12030 2.05« 2400 2.10 191.11 2.74 -267 0.04 14439 4.00 759 0. »1W.60 149 23949 4.02« 3009 340 17500 7520 72 »11239 -339 44 »-445 1» »1M.14 44M nsióp 2 17» 00 M.77 2.14 0722 2.26 149.99 303 -400 075 194. »010 -443 206 165.12 2.93 17149 423 7430 305 20000 14017 171 14373 163 22361 2.90 14.99 3.97 309 »392 4739 711 230.99 2.39 27792 331 170M 2» 22500 1 * 2. »1.33 1M37« 96 29036 2.74 113.99 2 »452» 992 223.37 597 31530 249 397.93 3 «24270 267 25000 21071 130 22917 160 39911 330 19SJ97 2.92 92332 • 72 374.72 S42 36799 3.77 499.13 416 31447 324 27500 29401 137 2 »22« 92 44396 9.97 29147 3.31 9M.44 1919 310.30 997 «143 TAI 993» 603 30554 730 30000 293.25 1 »31720« 94 019.42 4793 334.12 4.43 127349 2015 999M 969 «743 33.» 714 »16.» 30300 1626 32500 33352 30376 1611.12 44490 1977.12 «323 1494.» 11MM 103953 0 share 2 32500 33332 271 3057 * 331 1611.12 34.45 444.90 7.44 1977.12 43 »« 343 «092 1494 »41.72 11MM 2319« 03033 24 «30000 207» 1 0 2 * 302 1M 4MM 393 236 * 3 3 »69024 1294 990.30 937 441.43 4.54« 746 494 41029 3 »27500 22303« 30 23407 144 35134 2.47 17494 2.90 SM »743 »117 344 327» 242 4M47 3 »« 113 2SS 25000 «•« 33 1.32 1M02 131 2 69 2.14 109. »251 M049 5.30 299.19 9.41 272.34 1.39 3» 07 324 237 »2» 22500 150 42 140 «0020 137 2M29 233 47.19 209 24791 494 12002 469 232.73 1» 31110 347 10777 2 »20000 12103« 90 12104 208 176.00 2.79 -400 41.02 131. »3» 297 040 1 «.M 1.M 23135 402 12310 340 17500 7431 0947 10902 • 399 32.92 -222 14349 130 M 40 »voltage 3 17500 M10 210 U21 231 14131 306 -400 093 13449 • 45 -449 191 179.00 2.97 1« M 431 0770 3 »20000 13001 170 14100 162 21909 2M 944 379 2MM 394 3334 729 244.79 2.47 27272 336 10323 300 22500 «0007 1.37 1M49« St 29324 2.69 10342 2. »431.» 934 21470 990 309.90 2.97 3M.19 3 »24231 2» 25000 21413 143 22420 153 39243 3.44 177 »2.47 M7 .94 IM 39991 921 37944 3 »49444 397 30037 310 27900 2» 31 153 20299 IOS 439.32 934 23960 342 «494« 9 «3 4» 99 S71 47049 9.94 993 »SM 30700 0M 30000 2» 90 1.67 3 »62 1.96 396.73 42.09 32043 4 »120300 2 * 09 63234 970 939.34» «9» 30 17.19 56070 19, 13 32500 32040 33777 1664 OS 43949 1909.27 60012 1552.59 112915 103963 raction 3 32500 32040 2.56 337 p 310 1664 OS 46.76 43949 779 190947 4131 60012 10. »1952.59 44« 112915 2109 103963 2309 30000 26433 167 24035 1.67 44499 3.64 23 93 331 M7 .9S «2.47 337.» 9.13 439.M 4. »90293 464 4« 247 374 27500 22230 1.30 23302 140 34997 239 172.17 2.90 39997 7 »30406 3.41 329.73 244 401« 345 310 »239 25000 19001 133 10713« 33 26435 205 10742 2.94 37104 327 2 »93 939 2OT97 133 30551 319 25343 241 22500 15619 1 1 1MM 136 233.19 230 4390 1» 2 »39 439 113.13 439 231» 1 »313 M 3» 19510 207 20000 12104 102 11020 210 17377 2.79 -3.99 -002 12497 363 044 012 191.35 203 220 »400 123» 340 17300 7290 M 5 10391 -311 20 »-267 14017« 2037 3031 t t o Ul l TABLE 11 to Ul or Ul Ul TABLE 12 Strat cycle 1 Sample 2 Sample 3 Mode 1 Mode 2 Mue Mut-stra 4 Sample 5 Sample 6 Sample 7 Extension / Range Prßm Range Prom. Range Prom. Range Prom Range Range Prom Range Prom Range Avg. Prom Range Clinical retraction Ext Incl? N Ext Incline Range Prom Ext. Incline. , Ext In [Ext Incline Ext Incline Ext Incline. i. Ext Inclin txt Inclin edio on 175-325 1.72 175-325 1.96 175-325 10.92 175-325 3.02 175-325 12.62 175-325 5.57 175-325 930 175-325 6.75 | 7) -32) 6) 7 First Three 200 -325 200-32) 1.91 20042S 12.52 200-325 3.49 200-325 14.09 200-325 636 200-325 10.69 200-32) 747 200-32) 7.17 ios 1.65 225-325 1 67 225-325 1 96 225-325 15.03 225-325 3.51 225-325 1624 225-325 6 42 22) 32) 124) 225-32) 821 225-32) 824 2) 0-32) 1.76 250-325 2.01 250-325 1922 250-325 344 250 -325 19.50 2) 0-32) 666 2) 0-32) 1631 250-32) 9.79 2) 0-32) io n 275-325 1.95 27J-325 2.35 275-325 272 »275-325 4.46 275-325 24 13 27) -325 729 27) -32) 23.02 27) -32) 12.77 275-325 13 71 300-325 225 300-32) 2 79 300-325 41.96 300-325 5.72 300-325 3329 300-325 8.58 300-325 40.07 300-323 2002 300-32) 21 4 175-325 1 6) 175-325 1.87 175-325 10.74 175-325 3.02 175-325 11 96 175-325 5.58 175-325 9.11 175-323 6) 8 175-325 643 medium on < ^ First Three200-325 1.36 200-325 1.79 200-325 1228 200-325 3.34 200-323 13.01 200-325 6.08 200-323 1040 200-325 7.04 200-325 696 enf ii ^ «s 225-325 U 1 31 225 -325 1.77 225-325 14.69 225-325 3 15 225-325 14.68 225-325 5 73 225-325 1237 223-325 7.90 225-325 7 96 U 230-323 1.53 250-323 I SO 250-325 1866 250-325 3.16 230-323 17.06 250-325 5 65 250-323 15.51 250-J23 930 250-325 967 275-323 1.59 273-325 1.90 275-325 26.17 275-325 344 275-323 20.51 275-325 5 81 275-325 2130 275-325 11.86 275-325 12 88 300-32) 1 64 300-325 1.95 300-325 45.06 300-325 3.17 300-323 25.35 300- 325 5.97 300-325 3527 300-32) 17.61 300-325 1829 175-325 1 79 175-325 2 0) 175-32) 11.10 175-325 3.02 175-325 1329 175-32) 5.57 175-325 48 175- 325 6.93 175-325 6 72 medium over 200-323 1 7) 200-32) 2 04 200-32) 12 76 200-325 3.63 200-325 13 16 200-32) 6 63 200-325 in 200-325 7 ) 1 200-325 7 39 rations 225-323 1.83 225-323 2 1) 22) -32) 1537 225-325 4.02 225-325 17.79 225-32) 7 10 225-325 13.33 225-32) 8) 2 225 -32S 8 52 250-323 1 99 250-32) 236 2) 0-32) 19.78 2) 0-32) 4.52 230-325 21 94 250-32) 7 67 250-325 172) 250-325 1028 250- 325 10 55 275-325 2 32 275-32) 2.79 275-32) 2841 273-32) 5.48 273-32) 29.13 275-325 1 77 275-325 24.74 275-32) 13.67 275-325 14 5) 300- 323 2.87 300-32) 3 .62 300-32) 52.86 300-323 7.58 300-325 4534 300-325 1120 300-32) 44.86 300-32) 2244 300-325 2) 18 t t Ul or Ul l TABLE 13 DECADENCE (GRAMS 1 tension (mm) MODALITY 1 MODALITY 2 SAMPLE 1 SAMPLE 2 SAMPLE 3 SAMPLE 4 SAMPLE 5 SAMPLE 6 SAMPLE 7 175 1 40.05 49.a * 00.71 0.44 383.50 0.66 6644 68.53 77.06 200 44.50 66.07 04.76 76.82 461.82 137.35 113.03 62.10 60.62 225 53.64 65.41 104.13 146.93 686.67 Z24.03 136.61 • 7.43 61.51 i s. 250 50.03 79.42 129.00 166.06 • 3242 244.4 * 176.77 11142 03.0 * 275 62.74 7 ».7ß 16341 170.64 786.0» 242.26 227.64 133.61 11 * 46 1 • 300 99.10 76.96 263.11 160.62 ¡636.74 223.14 326.73 174.64 22043 romedio i 93.32! 66.67 143.61 116.64 and 611.0 * «76.66 170.93« 16.4 * 111.9 * Table 1 depicts Modality 1 described above and which generally corresponds to an elongated elastic member 66 (Figure 2) being attached to an elongated sleeve member 62 at locations corresponding to the seams 34 (Figure 1). Table 2 represents Modality 2 which is similar to Modality 1 except that in Modality 2 the elastic member is effectively intermittently joined to the elongate sleeve member. The intermittent pattern of union is a pattern of adhesive zones of 1.27 centimeters wide (0.5 inches) separated by zones of 1.27 centimeters wide without adhesive. Table 3 represents Sample 1. Table 4 represents Sample 2, Table 5 represents Sample 3, Table 6 represents Sample 4, Table 7 represents Sample 5, Table 8 represents Sample 6 and Table. 9 represents Sample 7.

The test procedure described below was applied to five specimens of elastic waistbands of five products of each of Modalities 1-2, Samples 1-7 to generate the data of Tables 1-13. After describing the test procedure, an example of a calculation was provided.

Test Procedure This test procedure is entitled "Cycle Test Program for Elastomeric Waist Bands SINTECH TESTWORKS®". The test procedure involves the following equipment. (1) A Sintech and Test orks® computer program version 2.11 with a voltage tester with an equivalent computerized data acquisition system, and a 25-pound load cell. Even though this test procedure was designed for the Sintech TestWorks® system, it can be carried out with other test systems that can be programmed to calculate the required parameters. (2) Users Guide for Sintech TestWorks® Program. (3) Pin / bolt accessories that are gripped on each of the pneumatic jaws / grips of the Sintech Tester with one of the accessories on the mobile block on top and the other accessory on the stationary block on the bottom.

Specimen preparation requires that the product used or the product that has been tested for other purposes not be used. A finished product is required, in which "finished product" refers to a product manufactured to be used for an intended purpose, such as a product removed from a bag purchased in any suitable facility, such as a store. With the finished product in the retracted state, the elastic waist band is cut from the upper part of the waist opening so that the cut part includes the full width of the elastic member or element, and ensures that the full length of the Waist band maintain its closed position form, for example, by ensuring that the waist band is not cut through its circumferential length. It was sufficient for the elastic waistband to cut 2.38 centimeters (15/16 inches) in width at the waist opening ensuring that the elastic waistband includes the full width of the member or elastic element.

The test parameters for the procedure are as follows (1) cross head speed of 500 millimeters per minute. (2) a measurement length of 150 millimeters, and (3) a tension value, in grams, taken at 25 millimeter increments designated in the extension range of 150 millimeters to 325 millimeters. 5 The procedure for preparing the test equipment is as follows: (1) Check the 25-pound load cell 10 that is in the Sintech Tester. The load cell should be heated for a minimum of 30 minutes. (2) Put the sintech, and if necessary, 15 type in the tester's identification and press Enter. Use the arrow keys or the mouse to highlight the desired heading. (3) Highlight "Test" on the Main Menu and press Enter. (4) Highlight "Method" on the Test Menu and press Enter. 25 (5) Highlight "Standard CSD" and press Enter. (6) Highlight "Cycle Test of 150-325 mm" and highlight Enter. (7) Highlight "Test" from the Test Menu and press 5 Enter. (8) Enter the Sample identification code and press Enter. (9) Grip inside each of the pneumatic jaws / claws of the Sintech tester the bolt / dowel accessories with one on the mobile block on the top and the other on the block stationary in the background. Make sure the top and bottom pin / dowel accessories are aligned vertically. Press "T" for tare load and accessory weight. 20 (10) Press F9. Adjust attachment distance 150 mm from the upper end of the upper attachment to the bottom end of the lower attachment.

To achieve this, press "G" for cross head movement and indicate the number of millimeters needed to obtain the measurement length of 150 millimeters. Press "Z" for zero extension. Press Escape for the 5 Test Menu. (11) Highlight "Calibrate" for calibration, and press Enter. Follow the TestWorks® menu program for calibration of the load cell, with reference to the User's Guide for more information on Load Cell Calibration if necessary. The load cell must be calibrated whenever the load cell is change, and at the beginning of each day / shift. (12) Press Escape when the calibration is completed to return to the Test Menu. 20 The test steps are as follows: (1) Place the closed circuit elastic waist band area on the slotted section of the top pin / dowel accessory on the seam part of the elastic waistband, and press F9. (2) Press "T" to set the tare of the load. (3) Press Escape to return to the Test Menu. (4) Place the other end of the waist band over the bottom pin / dowel accessory, with one seam over the top attachment and the other seam over the bottom attachment. 15 (5) Highlight "Run", and press Enter. The test will start and stop automatically and return to the measurement length of 150 millimeters to the termination. (6) When the run is complete, highlight either "Archive" if the data and graphics will be saved or "Next" to save only the data. Using either "Archive" or "Next" will bring up the "Test" screen for the next specimen. Remove the waistband from the tester. (7) Repeat steps 1-6 for all five specimens until the test is completed. (8) Refer to the User's Guide for the Sintech TestWorks Protocol for exporting data into an appropriate extended-page computer program package.

This test procedure was carried out on Modalities 1 and 2 and Samples 1-7. By way of example with reference to Table 9, five elastic waistband specimens of five products of Sample 7 (Oyasumi product) Man) were run individually through the first three cycles. The tension in grams at increments of 25 millimeters between 175-325 millimeters was presented in the first five columns of Table 9 under the heading "TENSION (gms)". At each increment of 25 mm for every five specimens, the tenc tensions in grams were averaged and appeared in the column "Average". So, for example, by subtracting the average tension from 204.01 grams to 200 millimeters from Extension 1 of the average tension of 115.37 grams to 175 millimeters from Extension 1, and dividing that difference by the increase of 25 millimeters, an inclination results average of 3.55 grams per millimeter between 175 millimeters to 200 millimeters in Extension 1; this inclination value of 3.55 appears in the "Incline g / mm column." Similar average inclinations were calculated for all increments of 25 millimeters for the first three cycles.

Table 10 represents the data of the "Average" and "Tilt" columns of Tables 1-9 for Modalities 1 and 2 and Samples 1-7.

Table 11 shows the average inclinations (g / mm) in the selected extension ranges in the retraction ranges for the extensions and retractions of the first three cycles. For example, Sample 7 has an average inclination of 6.36 g / mm in the extension range of 175-325 millimeters for the extension of the first cycle; the first cycle includes Extension 1 and Retraction 1. Similarly, for the retraction of the first cycle in the range of 175-325 millimeters, Sample 7 has an average inclination of 6.83 g / mm. These values were calculated from the data in Table 10. For example, in Table 11 the average slope of 6.36 g / mm for Sample 7 in the extension range of 175,325 millimeters of the first cycle was calculated by averaging, from Table 10, the six tilt values for Sample 7 between 175 millimeters and 325 millimeters for Extension 1.

The data in Table 11, were calculated for Modes 1-2 and Samples 1-7, a general average slope for (1) the first three cycles, (2) the three extensions of the first three cycles and (3) the three retractions of the first three cycles within the specific ranges. These general average inclinations are presented in Table 12. Modality 1 has a general average slope over the first three cycles of about 1.96 grams per millimeter in the range of 175-325 millimeters. The inclination of 1.96 g / mm was calculated by averaging the inclination of 1.98 g / mm over the first three extensions and the inclination of 2.05 g / mm over the first three retractions. As can be clearly seen from Table 12, Modes 1-2 have lower overall average inclinations for the first three cycles, the first three extensions, and the first three retractions than Samples 1-7. The general average inclinations of Table 12 are called average maximum rates of change of modulus of elasticity over the first three cycles within the identified range.

By providing the maximum average rates of change of modulus of elasticity over the first three cycles, a substantially uniform low tension is provided over a wide size range, a more comfortable notch and an improved ease of use.

The training pants 20 can be made of any suitable materials well known in the field of personal care articles. For example, the absorbent structure 38 may comprise any suitable absorbent material, natural or synthetic, or a combination thereof together with the superabsorbent material. The absorbent material from which the absorbent structure is made can also be concealed in a tissue wrapping (not shown) in order to maintain the integrity of the absorbent material. Suitable superabsorbent materials are available from various vendors, such as Stockhausen, Inc., Dow Chemical Company, Hoechst-Celanese Corporation, and Allied Colloids, Inc. Typically the superabsorbent material is capable of absorbing at least about 15 times its weight in water, and desirably is able to absorb more than about 25 times its weight in water. A suitable natural absorbent material is a wood pulp fluff identified by the trade designation CR 1654 of Kimberly-Clark Corporation, Neenah, Wisconsin. This particular wood pulp eraser is a slurry of highly absorbent and bleached sulphate wood pulp containing soft wood fibers.

The outer cover layer 46 may be a single layer of a liquid impervious or liquid permeable material, and may or may not have breathability, for example, be permeable to vapor. In this particular embodiment, the outer cover layer 46 is a two-layer composite comprising the outer layer 50 and the inner layer 52. The outer layer 50 is a bicomponent non-woven fabric permeable to the liquid having a basis weight of between about from 15 to around 35 grams per square meter. The non-woven bicomponent fabric can be a spunbonded bicomponent fabric or a bonded and bonded bicomponent fabric. Suitable bicomponent fibers are a wettable polyethylene / polypropylene bicomponent fiber available from CHISSO Corporation, of Osaka, Japan. In this particular bicomponent fiber, polypropylene forms the core and polyethylene forms the fiber sheath. Other fiber orientations are possible, such as multi-lobe, side-by-side, or end-to-end. A suitable alternate material is a non-woven fabric of polypropylene bonded by liquid permeable spinning having a basis weight of between about 15 grams per square meter per 50 grams per square meter.

The inner layer 52 is desirably a 0.0015 centimeter polyethylene film from Edison Plastics Company, of Newport News, Virginia.

Liner 48 is an essentially liquid-permeable liquid-permeable material, such as a spunbond fabric, a meltblown fabric, a carded and bonded fabric of synthetic polymer filaments or synthetic filaments combined with natural fibers, such as rayon. Suitable synthetic polymers include, by way of example, polyethylene, polypropylene and polyester. The layer 48 typically has a pore size that readily allows the passage of liquids, such as urine and other exudates from the body. If desired, the liner 48 can be treated with a surfactant to selectively adjust its degree of wettability, and it can also be selectively etched or punched with discrete holes or slits. The liner 48 desirably has a basis weight of between about 10 grams per square meter to about 30 grams per square meter.

All the adhesives described, such as the adhesives 54, 56, 72, 74 may be any suitable adhesives for bonding the identified materials. Suitable adhesives can be obtained from Findley Adhesives, Inc., of Wauwatosa, Wisconsin, or obtained from National Starch and Chemical Company, of Bridgewater, New Jersey. The adhesives can be applied in any suitable manner such as by spraying, slot-coating extrusion, printing or the like. The applied adhesive can be in any desired configuration such as continuous or discontinuous beads, continuous or discontinuous eddies, meltblown patterns, spray patterns, or the like.

The elongate sleeve member 62 of the elastic waist system 60 can be a non-woven bicomponent fabric comprising about 50 percent polypropylene fibers and 50 percent polyethylene fibers in a side-by-side orientation, and having a basis weight of around 17 grams per square meter. This particular type of material can be purchased from BASF Corporation, of Charlotte, North Carolina. Other materials suitable for use in an elongated sleeve member 62 include a spunbonded polypropylene fabric of 13 grams per square meter, or a spunbonded polyester fabric of 13 grams per square meter.

The elastic member 66 is desirably made of natural rubber, or of an elastomeric material such as isoprene which can be purchased from JPS Elastomerics Company, of Holyoke, Maine. The elastic member 66, as described above, can be a single material tape or a plurality of ribbons or threads of elastic material. A desired material to be used is a plurality of elastic yarns are the LYCRA® 940 decitex, which can be purchased from E.I. DuPont de Nemours Company, of Wilmington, Delaware.

Another important factor in providing essentially uniform low stress over a wide range of sizes, a more comfortable notch, and improved ease of use is the magnitude of maximum decay, measured in tension grams, in a specific extent over the first three cycles . For ease of explanation and understanding, and by way of example, the following description is made with reference to figure 9. The first three cycles of Modality 1 are identified as cycle 1, cycle 2, and cycle 3. Decadence on the first three cycles 1, 2 and 3 were calculated by selecting an extension, for example, 300 millimeters, and identifying the extension curve El for cycle 1 and the retraction curve R3 for cycle 3 and then subtracting the voltage in grams of the tension in grams in R3. This difference represents the decay, for example, the loss of tension in grams, over the first three cycles to an extension of 300 millimeters.

Similarly, and with a continued reference to Figure 9, Sample 3 is represented by cycle 1 ', cycle 2' and cycle 3 '. The decay over the first three cycles for Sample 3, measured at an extension of 300 millimeters, is the difference in grams of the extension of 'cycle 1' and the retraction R3 'of cycle 3'. Figure 9 clearly illustrates that the decay over the first three cycles of Mode 1 is significantly less than the decay over the first three cycles of Sample 3.

With reference to Table 13, the decay of Modes 1-2 and of Samples 1-7 were tabulated at 25 'increments in the range of 175 millimeters to 300 millimeters. At an extension of 300 millimeters, for example, Modality 1 resulted in a decay of 59.18 grams over the first three cycles, and Modality 2 resulted in a decay of 76.98 grams over the first three cycles. These decay values are significantly lower than the decay values at 300 millimeters for Samples 1-7. For example, at an extension of 300 millimeters, Sample 2 had a decline over the first three cycles of 150.82 grams and Sample 3 had a decline over the first three cycles of 839.74 grams.

Referring now primarily to Figures 5 and 6, a method of an assembly manufacturing line for making disposable absorbent training pants 20 will be described. In Figure 5, a first layer 80 of the material having the opposite edge portions 84. and 86 continuously moves in a first direction 82. The first layer 80 may be supplied in any suitable manner known in the art and will subsequently be part of the elongate sleeve member 62 (Figure 2). An elongate elastic member 88 is applied continuously or provided in a first direction 82, in any suitable manner known in the art, in a selectively stressed state to the first layer 80. The elongate elastic member 88 will subsequently be part of an elongated elastic member. 66 (figure 2). The elongate elastic member 88 may be continuously applied or provided in an essentially unstressed manner and, if so, this may be a specific type of elastomeric material commonly referred to as a heat-elastic material. This latter type of elastomeric material can be treated, such as by heat, to recover its latent elasticity. Generally, the elongated elastic member 88 will be attached to the first layer 80 before bending the first layer 80, by means of a pulsed adhesive system 90 to provide a predetermined pattern of adhesive on the first layer 80 by selectively controlling a nozzle bank Spray 91. The adhesive can be sprayed or applied in a continuous pattern or in an intermittent pattern. One suitable system to be used is the pulsed adhesive system described in European patent application 0 603 748 Al, the contents of which are incorporated herein by reference. The adhesive may also be supplied in other suitable manners, such as by the extrusion groove coating or by a patterned adhesive roll (not shown).

The pulsed adhesive system 90 can apply the adhesive in any desired pattern. For example, the pulsed adhesive system 90 can apply an adhesive pattern such as the adhesive zone 92 (FIG. 5) having a window 93 that is devoid of adhesive. Another pattern of adhesive that can be applied by the pulsed adhesive system 90 is represented by the adhesive zones 95 which extend essentially through the first layer 80 in a direction transverse to the first direction 82. Yet another adhesive pattern is illustrated by adhesive areas 99 which are intermittently applied and more closely spaced together than areas of adhesive 95. Regardless of the adhesive pattern used, it is desired that the pattern be selected such that at least a part of the pattern of adhesive corresponds instead to the seams 34 (FIG. 1) of the training pants 20.

Alternatively, the adhesive application can be eliminated, and the elongated elastic member 88 can be attached to the first layer 80 in a subsequent joining step resulting in the seams 34, as will be described hereinafter. In this case, the elongate elastic member 88 will be joined to the first layer 80 after bending the first layer 80.

After providing the elongated elastic member 88 to the first layer 80, said first layer 80 passes through a folding board 94, which continuously bends the first layer 80 in a direction generally transverse to the first direction 82 along the a fold line 96 and on an elongate elastic member 88. When bent, the elongate elastic member 88 is intermittently attached to the first layer 80, thereby resulting in a first elastic composite 97 which finally forms a part of a flexible member. elongated sleeve 62 (figure 2).

A second elastic composite 112 (FIG. 6) can be made in a separate manufacturing assembly line in the same manner as the first elastic composite 97. These two elastic compounds 97 and 112 can be made in a parallel fashion to one another, or be oriented angularly to one another, depending on several factors, such as the arrangements of the installation, for example, the size of the building housing the apparatus, the material supply requirements, the requirements of the operator, or the like. After the first and second elastic compounds 97 and 112 have been made, they can be rolled individually into the rolls and transported to another assembly line, such as that of Figure 6 for subsequent handling.

Referring now to Figure 6, a base layer 98 having the opposite edge portions 102 and 104 continuously moves in a machine direction 100. The base layer 98 may be a single layer of material or a laminate or composite comprising , for example, in this description, two layers that finally form the outer layer 50 and the inner layer 52 (Figure 2). The base layer 98 can also be made of a suitable material to be used as a liner 48. A pair of adhesive applicators, such as the adhesive spray nozzles 106, apply adhesive, such as the adhesive 74 (Figure 2), to along the opposite edge portions 102 and 104.

A plurality of absorbent structures 38 are registered or provided on top of the base layer 98 at equally spaced and spaced locations between the opposing edge portions 102 and 104. The absorbent structures 38 are positioned on the base layer 98 of In this manner, their respective sections 42 are transverse to the machine direction 100. This orientation of the absorbent structures 38 also results in their respective widths 44 being transverse to the transverse direction 101. Each section 42 is larger in dimension than a width 44. The absorbent structures 38 may be provided in any manner known in the art.

An upper layer 108 is continuously supplied on top of the absorbent structures 38 and the base layer 98. Just like the base layer 98 can be made of a suitable material or layers of material for the outer cover layer 46 or the liner 48, the upper layer 106 can also be made of materials suitable for use as an outer cover layer 46 or the liner 48. In this Particular description, upper layer 108 is the liner. The first elastic composite 97 and the second elastic composite 112 are continuously delivered to the base layer 98 so as to be placed over the respective edge portions 102 and 104 and joined thereto by the adhesive beads 74 (Figure 2). A pressure roller 110 presses the elastic compounds 97, 112, the base layer 98, and, if desired, the top layer 108, together to assist in bonding the layers together. The upper layer 108 may be smaller in transverse width than the base layer 98, and therefore may not be in contact with the elastic compounds 97 and 112. The elastic compounds 97 and 112 will form an elongated sleeve member 62 (Fig. 2). ).

The elastic compounds 97, 112 can be attached to either side of the base layer 98. For example, Figure 6 illustrates the elastic compounds 97 and 112 attached on the same side of the base layer 98 on which the absorbent structures are placed. . If desired, the elastic compounds 97 and 112 can be bonded on the opposite side of the base layer 98, thereby resulting in the embodiment of Figure 2.

A patterned rotating die, such as the pattern cutter roll 114, cuts a plurality of openings 116 through the top layer 108 and the base layer 98, between the absorbent structures 38. The openings 116 will subsequently form the openings leg 32 (figure 1). If desired, the openings 116 can be formed by other means, such as by the water jet cutters, and can be cut into any desired shape.

Then, a bending board 118 bends the base layer 98 along a fold line 120 which is parallel to the machine direction 100. A rotating ultrasonic joiner 122 then joins the folded base layer 98 along a plurality of the connecting lines 124, which are generally transverse to the machine direction 100. The joining along the joined lines 124 forms the seams 34 (Figure 1) and can be continuous or intermittent along one or a plurality of lines. The connecting lines 124 are located between the absorbent structures 38, and if desired, each elongated elastic member 88 can be joined simultaneously. (figure 5) to its respective layer 80 (figure 5). In the latter case, it may be necessary to apply any adhesive to the first layer 80 (Figure 5).

A cutter roll 126 having a blade 128 cuts the base layer 98 along the cut lines 130 which are transverse to the machine direction 100 and between the absorbent structures 38. Desirably, the cut lines 130 are located within. of a region or central area of respective junction lines 124, thereby dividing a single junction line 124 into two junction lines. The cut of the base layer 98 results in a plurality of disposable absorbent training pants 20 having elastic waist systems 60 around the waist openings 30, and in leg openings 32 formed by the seams 34.

In the process described above, the elastic compounds 97, 112 are material independent of the frame 22. Therefore, the elastic compounds 97 and 112 can be made of any desired materials, and of materials different from any materials of which the frame is made 22, to provide an elastic waist system 60 having the desired elastic properties.

Figure 3 illustrates a modification of the elastic waist system 60 that is integral or unitary with the frame 22 (Figure 1). In this description, the structural elements in common with those of Figure 2 will retain the same reference numbers. The waist edge 36 (FIG. 3) comprises the outer layer 50 and the inner layer 52. A peripheral edge portion 58 of the outer layer 50 extends outwards, for example, further to the right as illustrated in the figure 3, beyond the ends of the inner layer 52 and the liner 48. The peripheral edge portion 58 extends sufficiently to allow it to be bent over itself to form an elongate sleeve member 132. The sleeve member 132 comprises an outer surface 134, an inner surface 136, and defines an elongated conduit 138 having an elongate elastic member 140 positioned therein.

This construction of the elastic waist system 60 provides similar advantages and benefits previously described with reference to Figure 2. With respect to these constructions, the elongated sleeve members 62 and 132 can be placed on the outermost side of the outer layer 50 or the innermost side of the outer layer 50. For example, in Figure 2, both the outer surface 68 and the inner surface 70 of the elongate sleeve member 62 can be placed on the set side. The underside as seen in Figure 2 of the outer layer 50. Furthermore, if desired, the outer surface 68 and the inner surface 70 may have the peripheral edge portion 58 placed in the form of a sandwich therebetween. With reference to figure 3, the peripheral edge part 58 can be bent over itself in a direction opposite to that illustrated in Figure 3, so that the outer surface 134 is on the opposite side, the lower side as seen in Figure 3 of the part peripheral edge 58. Generally, the construction and placement of the elastic waist system 60 with reference to the peripheral edge portion 58 will be determined by several factors, such as material factors, manufacturing factors, aesthetic factors or the like.

With reference to Figure 4, a description will be made of a method for manufacturing the modification of Figure 3. A base layer 142 having the opposite edge portions 146 and 148 moves continuously in a machine direction 144. The layer base 142 can be any of the layers previously described with reference to the frame 22. For example, a base layer 142 can be selected to optionally comprise the outer cover layer 46, the liner 48 or any other layer that can be incorporated in the frame 22. In this particular description, the base layer 142 is selected to make the outer cover layer 46 comprising an outer layer 50 and an inner layer 52.

A plurality of absorbent structures 38 are registered or provided on the part of the base layer 142 in an equidistantly spaced-apart manner. Each absorbent structure 38 has a length dimension 42 greater than a width dimension 44, and is oriented on the base layer 142 so that the length dimension 42 is generally transverse to the machine direction 144. The absorbent structures 38 they are also illustrated in Figure 4 placed between the opposite edge portions 146, 148 of the base layer 142.

An upper layer 150, such as a lining material in this description, is supplied continuously, in any suitable manner well known in the art, to cover the absorbent structures 38 and the base layer 142, and a plurality of openings 116 are cut or they are formed in a manner as described above with reference to Figure 6.

The upper layer 150 has the opposite edge portions 151 and 153 which, like the opposite edge portions 146, and 148 of the base layer 142 extend in the machine direction 144. As described above, base 142 forms the outer cover layer 46 comprising the outer layer 50 and the inner layer 52 (figure 3) and the outer layer 50 extends laterally beyond the opposite edge portions 151 and 153 of the top layer 150. The phrase "laterally beyond" refers to a direction parallel to the transverse direction 168 which is transverse to the machine direction 144. It is this extension of the outer layer 50 that forms a part of the elastic waist system 60.

In Figure 4, two different patterned adhesive rolls 152 and 158 were illustrated for the purposes of describing the intermittent application of different adhesive patterns to the base layer 142. However, it is understood that only one adhesive pattern.

The pattern adhesive roll 152 intermittently applies the adhesive in the machine direction 144 in a pattern of selected adhesive 154 to the opposite edge portion 146 of the base layer 142. The pattern with adhesive 154 includes a plurality of adhesive zones. different adhesive 156 which are spaced apart from each other, for example, applied intermittently, in the machine direction 144. If desired, only the different adhesive areas 156 can be applied by the pattern 152 adhesive roller, eliminating therefore any pattern of bonding adhesive between the adhesive zones 156. As will be described hereinafter, are the different areas of adhesive 146 which adhesively bond an elongated elastic member 140. The remaining adhesive of the adhesive pattern 154 will adhesively bond a bent part of the opposite edge part 146. If preferred, a pulse adhesive system, similar to the pulsed adhesive system 90 in Figure 5, it can replace the pattern 152 and 158 adhesive rolls. Regardless of the apparatus and method of application of adhesives, it is important that the process and the apparatus be capable of selectively applying the adhesive in a pattern. intermittent.

The pattern adhesive roller 158 applies an optional adhesive pattern 160 having a plurality of separate and spaced adhesive areas 162. Compared to the adhesive zones 156, the adhesive zones 162 are more closely spaced together. The spacing of the adhesive zones 156 and 162 as well as their dimensions can depend on numerous variables, such as the adhesive material, the amount of adhesive applied, the elastic material, the layer materials, the manufacturing speeds, or the like.

An elongate elastic member 140 is continuously delivered in the machine direction 144 to each edge portion 146 and 148 of the base layer 142. In this particular description, these opposite edge portions 146 and 148 correspond in the finished product, to the peripheral edge portion (Figure 3) of the outer layer 50. Each elongated elastic member 140 may be applied with either a selected tension or an essentially unstressed tension, in a manner similar to that described with reference to the method of Figure 6 .

As illustrated in Figure 4, each of the elongate elastic members 140 is delivered or placed on the base layer 142 so that they cover the areas of adhesive 156 on the opposite edge portion 146 or areas of adhesive 162. on the opposite edge portion 148. This results in an intermittent union of the elastic members 140 at their respective edge portions 146 and 148.

After the elongated elastic members 140 have been delivered to the base layer 142, a pair of bending boards 164 bend each opposite edge portion 146 and 148 along their respective fold lines 166. This causes each opposite edge portion 146 and 148 to double in a direction parallel to the transverse direction 168, and on a respective elongate elastic member 140. The opposite edge portions 146 and 148 will eventually form, in a finished training pant 20, an elongated sleeve member 62 (Figure 2).

After passing through the bending boards 164, the base layer 142 can be processed in a manner similar to that of Figure 6. For example, a bending board 118 bends the base layer 142 along the line of bending 170, which is generally parallel to the direction of the machine 144. An ultrasonic linker, such as a rotating ultrasonic linker 122, ultrasonically bonds the bent base layer 142 along a plurality of bond lines 172, generally transverse to the machine direction 144. A cutting roller 126 then cuts the base layer 142 along a plurality of cutting lines lying between the absorbent structures 38 and which are generally transverse to the machine direction 144. The cut of the folded base layer 142 forms the individual disposable absorbent training pants 20 (FIG. 1) with the respective elastic waist systems 60 (FIG. 2) to ab waist rtures 30 and leg openings 32 formed from the seams 34.

Although the invention has been described as having preferred embodiments, it will be understood that this is capable of further modifications. This application is therefore intended to cover any variations, equivalents, uses or adaptations of the invention following the general principles thereof, and including such items of the present disclosure as fall within the known or customary practice in the art to which This invention belongs and fall within the limits of the appended claims.

Claims (26)

R E I V I N D I C A C I O N S

1. An elastic waist system for a disposable absorbent pants comprising a frame including a front panel, a back panel, a crotch panel, and an absorbent structure on the crotch panel, said front panel and said back panel being selectively bonded to forming a waist opening and a pair of leg openings, said elastic waist system comprises: an elongated sleeve member defining an elongated conduit there, and being generally positioned peripherally around said waist opening, and an elongate elastic member placed inside the elongated conduit, said elastic waist system has a maximum average rate of change of modulus of elasticity over the first three cycles of about 2.50 grams per millimeter in an extension range of between about 175 millimeters to about 325 millimeters.

2. The elastic waist system as claimed in clause 1, characterized in that each cycle comprises an extension and a retraction, and said elastic waist system has a maximum average rate of change of modulus of elasticity on the first three extensions of around of 2.50 grams per millimeter.

3. The elastic waist system as claimed in clause 2, characterized in that said elastic waist system has a maximum average change rate of modulus of elasticity over the first three retractions of about 2.50 grams per millimeter.

4. The elastic waist system as claimed in clause 1, characterized in that said range of extension is between about 250 millimeters to about 325 millimeters, and said maximum average rate of modulus of elasticity change over the first three cycles It is around 3.00 grams per millimeter.

5. The elastic waist system as claimed in clause 4, characterized in that each cycle comprises an extension and a retraction, and said elastic waist system has a maximum average rate of change of modulus of elasticity on the first three extensions of around of 2.50 grams per millimeter.

6. The elastic waist system as claimed in clause 5, characterized in that said waist elastic system has a maximum average rate of change of modulus of elasticity over the first three retractions of about 3.00 grams per millimeter.

7. The elastic waist system as claimed in clause 1, characterized in that said range of extension is between about 300 millimeters to about 325 millimeters, and said maximum average rate of modulus of elasticity change over the first three cycles It is around 4.25 grams per millimeter.

8. The elastic waist system as claimed in clause 7, characterized in that each cycle comprises an extension and a retraction, and said elastic waist system has a maximum average rate of change of modulus of elasticity on the first three extensions around of 3.00 grams per millimeter.

9. The elastic waist system as claimed in clause 8, characterized in that said elastic waist system has an average maximum modulus of elasticity change over the first three retractions of about 5.60 grams per millimeter.

10. A disposable absorbent panty comprising: a frame including a front panel, a back panel, a crotch panel, and an absorbent structure on said crotch panel, said front and back panels being joined together to form a waist opening and a pair of leg openings, said frame further includes a waist edge comprising a layer of a material generally positioned peripherally around said waist opening, and an elastic waist system generally peripherally attached to said waist edge, said elastic waist system having a maximum average rate of change of modulus of elasticity over the first three cycles of about 1.96 grams per millimeter.

11. The brief as claimed in clause 10, characterized in that said maximum average rate of change of the modulus of elasticity is within an extension range of between about 175 millimeters to about 325 millimeters.

12. The brief as claimed in clause 11, characterized in that said elastic waist system comprises an elongated sleeve member having an elongated conduit there, and an elastic member positioned within said elongated conduit.

13. The pantyhose as claimed in clause 12, characterized in that said absorbent structure has an absorbent end edge, and wherein said elastic member has an outermost peripheral edge and an innermost peripheral edge. said innermost peripheral edge is spaced from said absorbent end edge by between about 5 millimeters to about 20 millimeters.

14. The underpants as claimed in clause 12, characterized in that said elastic member is a single elastic member.

15. The underpants as claimed in clause 12, characterized in that said elastic member is a plurality of elastic members.

16. In a disposable absorbent panty comprising a frame including a front panel and a back panel joined together to form a waist opening and a pair of leg openings, a crotch panel, and an absorbent structure positioned on said crotch panel; an elastic waist system having an average maximum modulus of elasticity change rate over the first three cycles of about 1.96 grams per millimeter in an extension range of between about 175 millimeters to about 325 millimeters.

17. The brief as claimed in clause 16, characterized in that said cycle comprises an extension and a retraction, and said elastic waist system has an average maximum modulus of elasticity change over the first three extensions of about 1.87 grams. per millimeter

18. The underpants as claimed in clause 17, characterized in that said elastic waist system has an average maximum modulus of elasticity change over the first three retractions of about 2.05 grams per millimeter.

19. The brief as claimed in clause 18, characterized in that said elastic waist system comprises an elongated sleeve member defining an elongated conduit there, and being generally positioned peripherally around said waist opening, and an elongate elastic member positioned within said elongated conduit.

20. The pantyhose as claimed in clause 19, characterized in that said absorbent structure has an absorbent end edge, and wherein said elongated elastic member has an outermost peripheral edge and an innermost peripheral edge, said innermost peripheral edge being spaced from said absorbent end edge by between about 5 millimeters to about 20 millimeters.

21. In a disposable absorbent pants comprising a frame including a front panel and a back panel joined together to form a waist opening and a pair of leg openings, a crotch panel and an absorbent structure positioned on said crotch panel; an elastic waist system having a maximum average rate of change of modulus of elasticity over the first three extensions of about 1.87 grams per millimeter in an extension range of between about 175 millimeters to about 325 millimeters.

22. The brief as claimed in clause 21, characterized in that said range of extension is between about 250 millimeters to about 325 millimeters, and said maximum average modulus of elasticity change rate is about 1.80 grams per millimeter .

23. The underpants as claimed in clause 22, characterized in that said range of extension is between about 300 millimeters to about 325 millimeters, and said maximum average modulus of elasticity change rate is about 1.95 grams per millimeter .

24. In a disposable absorbent pants comprising a frame including a front panel and a back panel joined together to form a waist opening and a pair of leg openings, a crotch panel and an absorbent structure positioned on said crotch panel; an elastic waist system having a maximum average rate of change of modulus of elasticity over the first three retractions of around 2.05 grams per millimeter and an extension range of between about 175 millimeters to about 325 millimeters.

25. The brief as claimed in clause 24, characterized in that said range of extension is between about 250 millimeters to about 325 millimeters, and said average modulus of elasticity change rate is about 2.36 grams per millimeter.

26. The brief as claimed in clause 25, characterized in that said range of extension is between about 300 millimeters to about 325 millimeters, and said maximum average modulus of elasticity change rate is about 3.62 grams per millimeter . SUMMARY The present invention provides a disposable absorbent training pant for a child having an improved waist elastic system. The elastic waist system has a selected average maximum rate of modulus of elasticity change over the first three cycles within a specified range of extension, thus providing essentially uniform low tension over a wide range of sizes, a more comfortable notch and Improved ease of use.