JPH07227407A - Throw-away pants - Google Patents

Abstract

PURPOSE:To form joint parts which are not easily ruptured by a wearer's movement and enable a helper, etc., to disassemble the pants after use. CONSTITUTION:The throw-away pants are formed by two folding a sheet laminate including an absorbent to the front and rear and joining both right and left parts thereof along side edges, thereby forming the joint parts 9, 9. These joint parts 9 consist of plural transverse adhesive lines 11 and >=1 longitudinal adhesive lines 12. These transverse adhesive lines 11 are arrayed in one or two rows intermittently in a longitudinal direction and these longitudinal adhesive lines 12 are so formed as to come into contact with or intersect with at least one of the transverse adhesive lines 11 described above.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable pants which is formed in a pants type by providing joints on both right and left sides. The present invention relates to disposable pants designed to be disassembled.

[0002]

2. Description of the Related Art FIG. 3 is a front view showing an example of disposable pants. The disposable pants 1 has an upper body opening 5
However, a pair of leg openings 6 and 6 are formed on the lower side, and waist or gather for legs by attaching thread-shaped or strip-shaped elastic bodies (made of natural rubber or synthetic rubber) 8a, 8c around them. A gather is formed. Further, another elastic body 8b may be provided laterally between the waist gathers and the leg gathers in order to enhance the adhesion around the body.

A general disposable pants 1 is composed of a sheet laminated body composed of a liquid-impermeable back sheet 2, an absorbent body 4 and a liquid-permeable top sheet 3. Then, on the left and right side portions of the disposable pants 1, joint portions 9, 9 for joining the front and rear sheet laminated bodies are provided. That is, in the manufacturing process, both sides of the sheet laminate that is folded in the front and back are joined along the side edges by means of heat welding, ultrasonic heating, high frequency heating, adhesive bonding, etc. Form.

By the way, the disposable pants are used not only for adults but also for infants who can walk around 12 to 36 months after reaching the diaper separation period. Since the infant at this time actively moves, if the bonding strength at the joint portion 9 is weak, it may be easily broken. However, on the other hand, if the disposable pants are not quickly removed after defecation / urination, it will have an adverse effect on the education of the infant, and stool and urine will adhere to unnecessary portions due to the movement of the wearer.

In removing the disposable pants, if the joint portion 9 is peeled off and disassembled into a flat surface, the disposable pants can be removed even when the wearer is standing up without attaching feces or the like to the feet. You can The joint 9 must therefore meet the conflicting requirements that the infant must not be torn by active movements and that the caregiver can easily remove it manually.

[0006]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to prevent disposable trousers formed with a joint portion from being easily torn by the movement of the wearer, and to be used by a caregiver or the like after use. It is an object of the present invention to provide disposable pants having a joint that can be disassembled without requiring force.

[0007]

DISCLOSURE OF THE INVENTION In the disposable pants of the present invention which has achieved the above object, the sheet laminated body including the absorbent body is folded back and forth and the left and right side portions thereof are joined along the side edges. Disposable pants having a joint, the joint comprising a plurality of lateral adhesive lines and one or more longitudinal adhesive lines, the lateral adhesive lines being longitudinally intermittently arranged in one or two rows. The vertical adhesive line is provided so as to come into contact with or intersect at least one of the horizontal adhesive lines.

A structure in which the vertical adhesive line is in contact with or intersects only at the upper end portion and / or the lower end portion of the horizontal adhesive line, or the vertical adhesive line is in contact with all of the horizontal adhesive line. Is a preferred embodiment of the present invention. In addition, these longitudinal bond lines
It is also possible to employ either the configuration provided outside the lateral adhesive line or the configuration provided inside.

[0009]

In the disposable pants of the present invention, the joints on both sides are composed of a plurality of lateral adhesive lines which are intermittently arranged in one or two rows in the longitudinal direction, and one or more longitudinal adhesive lines. However, it has the greatest feature. Even if the configuration of the joining lines is such that the horizontal adhesive lines are intermittently arranged in the vertical direction,
When there is no longitudinal adhesive line, the joint strength becomes weak, and especially the waist opening and the corresponding upper and lower portions of the joint of the leg opening are likely to be torn during or during wearing of disposable pants.

According to the present invention, since the longitudinal adhesive line is provided so as to contact or intersect with at least one of the lateral adhesive lines, the lateral adhesive line acts against the external force applied to the pants in both the lateral direction and the longitudinal direction. Demonstrates excellent durability. That is, the external force acting on the pants during or during wearing is mainly a lateral force that pushes the disposable pants outward, and the longitudinal adhesive line effectively works against this force and the pants are Prevent it from breaking easily. However, if a force is applied obliquely to both the horizontal adhesive line and the vertical adhesive line, they can be peeled off with a relatively small force, and therefore they can be easily disassembled.

By providing the vertical adhesive line at the upper end and / or the lower end excluding the middle of the horizontal adhesive line, the upper and lower parts of the joint where the external force is likely to act first are reinforced. It is possible to effectively prevent peeling during or during wearing. Of course, the vertical adhesive line may be in contact with or intersect all the horizontal adhesive line rows. At this time, the joint strength is high, so it is recommended to target the wearer in the later stage of infants who have a lot of movement.

If the longitudinal adhesive lines are arranged outside the row of lateral adhesive lines (corresponding to the left and right side edges of the pants), the caregiver puts his / her fingers inside the pants to dismantle the pants. , It can be easily peeled from the transverse adhesive line to the longitudinal adhesive line, which are orthogonal to each other by the force in the diagonal direction,
Can be easily disassembled. On the other hand, when the vertical adhesive line is arranged inside the horizontal adhesive line row, the caregiver may disassemble the pants while pinching the side edges of the pants.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a partially cutaway explanatory view showing an embodiment of the present invention, showing the left side portion of disposable pants 1, and the structure itself of disposable pants is the same as that shown in FIG. Of course, the structure of the disposable pants is not limited to the one shown in FIG. A laminated absorbent body including a liquid sheet, an absorbent body, and a liquid permeable sheet may be provided inside the back sheet. In the case of this configuration, the air permeability of both sides is good.

The joint portion 9 is composed of a vertical adhesive line 12 and a plurality of horizontal adhesive lines 11 formed by heat sealing, and one horizontal adhesive line 11 is a rectangle, and a plurality of horizontal adhesive lines 11 are assembled to form rows in the vertical direction. Formed. The longitudinal adhesive lines 12 are formed outside the lateral adhesive lines 11 (on the side edges of the pants) so as to come into contact with the lateral adhesive lines 11 at the upper and lower ends of the lateral adhesive line row. Has been done. The vertical adhesive line 12 may be any of the above-described heat seals and adhesives using an adhesive such as a hot melt type, and the shape thereof is rectangular, circular, elliptical, linear (straight line, broken line, chain). Any shape such as (including linear) can be used.

(Experimental Example) The size shown in FIG.
20g / m² Non-woven polypropylene N ₁ And basis weight
Is 23 g / m² Non-woven polypropylene N₂ 2 sheets each
Was heat-sealed as shown in FIG. At this time,
Comparison formed with only the lateral adhesive line 11 as shown in (C)
Using the example together with the vertical adhesive line 12 as shown in FIG.
The respective tensile strengths of the examples of the present invention were compared.
It was Heat sealing can be done under pressure of 500 kg for 16
The treatment was performed at 5 ° C. for 1/100 seconds. Longitudinal bonding
In the example that uses the line together, the horizontal adhesive line and the vertical adhesive line are
The above conditions are used in different heat sealing devices. Well
The tensile test was performed while the width of the test piece of 50 mm was completely broken.
The highest tensile strength was measured.

The average value of 10 pieces of each test piece was 2.8 kg in the comparative example, while it was 3. 8 in the example.
6 kg, showing that the product of the present invention has a strength of about 30 percent higher than that of the comparative product. The tensile strength of the adhesive wire in the disposable pants is required to be 3 kg or more in order to prevent tearing when worn, and is preferably 4 kg or less in consideration of peelability after use.

2A to 2F are partially cutaway explanatory views showing another embodiment of the present invention, showing the left side portion of the disposable pants. (A) is an example in which the longitudinal adhesive line 12 is formed outside the lateral adhesive line 11 over the entire area of the lateral adhesive line row, and this structure has the highest strength against external force from the lateral direction and the longitudinal direction. Exert. Therefore, it is suitable for a wearer who moves rapidly. Further, (B) and (C) show an example in which the longitudinal adhesive line 12 is formed inside the lateral adhesive line 11, and these exhibit high resistance to the force applied in the lateral direction from the inside of the pants. .

Further, (D) and (E) are lateral adhesive lines 1
1 shows an example in which the longitudinal bonding line 12 is obliquely formed with respect to No. 1, and these exhibit excellent proof stress when an external force is applied obliquely. Furthermore, (F) is the lateral adhesive line 1
1 shows an example in which the longitudinal adhesive line 12 is formed so as to penetrate the central portion of the staggered arrangement in which two rows are formed. This shows the appearance of the welded part is beautiful and the strength is similar to that of sewing back. You can give the effect.

[0019]

According to the present invention, since the disposable pants connecting structure has a structure in which the horizontal adhesive line and the vertical adhesive line are combined, the disposable pants themselves are not torn by the movement of the wearer when they are worn. As described above, it is possible to provide disposable pants having both of the advantages that high joint strength is achieved, and that the pants can be disassembled by a caregiver to easily remove the joint when the pants are removed from the wearer after use.

[Brief description of drawings]

FIG. 1 is a partially cutaway explanatory view showing an embodiment of the present invention.

2 (A) to (F) are partially cutaway explanatory views showing another embodiment of the present invention.

FIG. 3 is an overall front view showing an example of disposable pants.

4 (A) to (D) are explanatory views showing a test method of an example of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disposable pants 4 Absorber 5 Body opening 6 Leg opening 9 Joint part 11 Lateral adhesive line 12 Vertical adhesive line

Claims (5)

[Claims] 1. Disposable pants in which a sheet laminated body including an absorbent body is folded back and forth and two left and right side portions thereof are joined along side edges to form a joined portion, wherein the joined portion has a plurality of lateral portions. A directional bond line and one or more longitudinal bond lines,
The horizontal adhesive lines are arranged in one or two rows intermittently in the vertical direction, and the vertical adhesive lines are provided so as to contact or intersect at least one of the horizontal adhesive lines. Disposable pants. 2. The disposable underpants according to claim 1, wherein the longitudinal adhesive lines contact or intersect only at the upper ends and / or lower ends of the lateral adhesive lines. 3. The disposable pants of claim 1, wherein the longitudinal bond lines contact or intersect all of the horizontal bond lines. 4. The disposable pants according to claim 1, wherein the vertical adhesive line is provided outside the horizontal adhesive line. 5. The disposable pants according to any one of claims 1 to 3, wherein the vertical adhesive line is provided inside the horizontal adhesive line.