TWI283184B - Nonwoven web with improved adhesion and reduced dust formation - Google Patents

Abstract

Making suitable nonwoven webs requires good adhesion between the binder and the absorbent material. The present invention relates to a nonwoven web having improved adhesion based on tackifiers present in the binder. Optionally, the binder with tackifier may also contain an adhesion promoter, usually grafted polyolefins, and an enhancement agent, usually inactive inorganic compounds in powder form. The web comprises from about 5 to about 25% by weight binder fiber and from about 75 to 95% by weight absorbent. The absorbent may be a natural absorbent or a super absorbent polymer or a combination of these. The binder fiber contains less than about 40% by weight tackifier. Tackifier is selected form the class of rosin, rosin esters, terpene based, piperylene based, and hydrocarbon based compounds.

Description

1283184 5 11 Printed by the Ministry of Economic Affairs, Intellectual Property Bureau, Staff Consumer Cooperatives ο 2 A7 B7 * V. Invention Description (〗 〖) [Invention Area] ~ There are non-woven fabrics made from dry and wet paving, which can be used Diapers, incontinence pads, sanitary napkins, and other liquid absorbing pads, in particular, these shims generally include cement and wood pulp, or other absorbent materials. When making suitable nonwoven fabrics for these purposes, good adhesion is required between the binder and the absorbent material. More specifically, the present invention relates to a nonwoven fabric having improved adhesion, which is based on The adhesive is present in the binder. Tackifiers include: rosin, rosin esters, bismuth-based bismuth, squash-thin basement, and water-repellent compound-based compounds. The binder having a tackifier may optionally comprise a binder promoter, usually a grafted polyolefin, and a reinforcing agent, usually an inactive inorganic compound in powder form. [Prior Art] Nonwoven fabrics, particularly disposable absorbent articles such as disposable diapers, are very popular in the market, however, there is still room for improvement in these products, especially their adhesion, for example: During the manufacturing process, when it is processed into articles, and when used, it will not be loose. Prior to the present invention, it was known that an absorbent (wood pulp and optionally up to 25 wt% super absorbent polymer, SAp) and a binder, such as two-component fibers or low-melt polymer fibers, can be formed into existing Nonwovens, these prior compositions comprise about 10% by weight binder and about 80 to 90% by weight absorbent. When manufacturing these nonwoven fabrics, the wood pulp (and optionally SAp) is first mixed with a binder, and then the composition is placed in a heating zone, so that 3 A7 B7 1283184 5, the invention description (2) The material, or the low melting material of the two component fibers, can be melted and applied to at least a portion of the majority of the wood pulp fibers (and optionally SAP), and then the composition is placed in a cooling zone such that The lower melted binder material is capable of solidifying, so the wood pulp (and optionally SAP) can be bonded into a single fabric structure. Optionally, other fibers, such as other synthetic fibers or natural fibers, may be added to achieve other desirable properties such as low density, high gas permeability, compression resistance, and liquid absorption rate.

Hansen et al., U.S. Patent No. 5,981,410, the disclosure of which is incorporated herein by reference to U.S. Patent No. 5,981,410, the disclosure of which is incorporated herein by reference. Diaper.

A nonwoven fabric comprising cellulosic fibers, such as fluff pulp and low melt fibers, can be used to make disposable diapers and other articles, as disclosed in U.S. Patent No. 5,994,244. It also discloses that inorganic 15 particles (such as: titanium dioxide) are added to the two-component spinning of the ethylene-acrylate-maleic anhydride sheath in combination with the filaments, which can reduce the adhesion of the filaments during spinning. Make a more uniform fabric. </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; Low melt maleic acid or maleic anhydride grafted polyethylene. In U.S. Patent No. 5,126,201, Shiba et al. disclose that titanium dioxide is simultaneously added to the core and sheath of a two-component binder fiber to improve the cutting efficiency of the nonwoven fabric, and the amount of titanium dioxide in the core is greater than 1.5%. Chinese National Standard (CNS) A4 specification (210 X 297 mm) is applied to this paper scale ^3184 A7 B7 Five Ministry of Economic Affairs Intellectual Property Bureau employee consumption cooperative printing

DESCRIPTION OF THE INVENTION (3) The good one is that the sheath does not contain dioxin and low adhesion. Because the titanium dioxide in the jacket will drop

Matsuo et al. in the Japanese I set / polyacetate core, the second component _ 2_169718 reveals the polyene granules (with - enger from the fiber compliant set contains 3 to 10% inorganic opacity, this Specialists, 'materials can obtain better softness and strong production.' No, adding inorganic particles will reduce the nonwovens. [Inventive content] As described in J, these nonwoven fabrics still need to be improved in technology. Adhesively, the present invention improves these existing nonwoven fabric products. In particular, the present invention utilizes a tackifier to improve adhesion, and the tackifier includes a fragrant vinegar and a base. The invention relates to a compound of a pepper and a carbohydrate-based compound. The invention relates to a two-component fiber or a low-melt polymer fiber, and a tackifier, thereby manufacturing a binder with improved adhesion. The component fiber comprises a south melting portion and a low melting portion, and the low melting portion contains a tackifier. If a low melting fiber (instead of the two component fiber) is used, the same contains a tackifier, and the tackifier is Consider acting as a adhesion promoter Preferably, the absorbent material is bonded together to form a single fabric. The low melt portion of the low melt polymer fibers or bicomponent fibers is defined as a low melt matrix, in the broadest sense, The invention includes a binder containing a tackifier | fiber, the binder fiber can be a two component fiber or a typical low melt polydermal skin, 1 standard (CNS) A4 size (210 X 297 mm) ' ---1 !283184 A7 B7 V. INSTRUCTION DESCRIPTION (4) The dimension optionally comprises an adhesion promoter and a reinforcing agent. In the broadest aspect, the fabric of the present invention comprises a binder fiber comprising a tackifier and a Absorbent, which may be synthetic or natural. In its broadest aspect, the invention also includes a fabric comprising from about 5 5 to about 25 weight percent binder fibers, and from about 75 to 95 weight percent absorbent, The absorbent can be a natural absorbent, or a superabsorbent polymer, or a combination of the two. The binder fibers comprise less than about 40% by weight of tackifier based on the low melt matrix. 5 11 Ministry of Economic Affairs Intellectual Property Office Staff Consumption Co-operative printing ο 2 [Examples] Suitable absorbents are natural or synthetic absorbents, synthetic absorbents are generally known as superabsorbent polymers (SAp), absorbents include 75 to 95% by weight of fabrics. Natural absorbents are hydrophilic. Materials such as cellulose fibers, wood pulp wraps, cotton, cotton linters, and regenerated cellulosic fibers, such as 3 cumbersomes, or mixtures thereof, are preferably milled wood pulp, which are inexpensive and readily available. Absorbent pads using natural absorbents may not provide adequate liquid absorption in all environments, and natural absorbents are very bulky, so many absorbent pads use relatively small amounts of SAP, which is much more expensive than natural absorbents. High, replacing a portion of the natural absorbent with SAP reduces the overall volume of the pad and/or provides super liquid absorption. As used herein, superabsorbent polymer, or "SAP" means a water-swellable, generally water-insoluble material which absorbs at least 10 times its weight and is intended to be It is 20 times, preferably about 50 times or more. Superabsorbent polymers may be formed from organic materials, which may include

A7 B7 1283184 V. INSTRUCTIONS (5) Tian-ran materials, such as: agar, pectin, and gum arabic, as well as synthetic materials such as synthetic hydrogel polymers. Synthetic hydrogel polymers include, for example, carboxymethyl cellulose, alkali metal salts of polyacrylic acid, polypropylene decylamine, polyvinyl alcohol, ethylene maleic anhydride copolymer, polyvinyl ether, hydroxypropyl cellulose, poly 5 Ethyl ketone, polymer and copolymer of ethylene sulfonic acid, polyacrylate, polypropylene decylamine, polyvinyl pyridine, and the like. Other suitable polymers include: hydrolyzed acrylonitrile grafted starch, acrylic acid grafted starch, copolymerized with isobutylene maleic anhydride, and mixtures thereof. Preferably, the hydrogel polymer is slightly crosslinked to provide a material that is substantially water insoluble, and the crosslinking can be by radiation or a combination of covalent, ionic, van der Waals, or hydrogen bonds. Suitable materials are available from various vendors such as Dow Chemical, Union Colloid, and Stockhausen. The superabsorbent polymer can be in the form of particles, flakes, fibers, rods, films, or any of a number of geometric forms. The Ministry of Economic Affairs Intellectual Property Office employee consumption cooperative printed on the binder fiber of the present invention may be in the form of a low melt fiber or in the form of a fifteen two-component fiber, the low melt portion of the two-component fiber including the low melt Preferably, the fibers of the present invention are two-component fibers. The binder fibers have an average length of from about 3 to about 75 mm, and preferred binder fibers have a denier between 1 and 10. The low melt matrix can be a polyolefin such as polyethylene (PE), polypropylene (PP), polybutene, or mixtures thereof. 2〇 Suitable polyethylene can be: high density polyethylene (HDPE), medium density polyethylene (MDPE), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), ultra low density polyethylene (ULDPE) ), or a mixture thereof, for making these polyethylenes, a Ziegler-Natta or metal dicyclopentadiene complex catalyst can be used. Alternatively, the low melt matrix can be a low melt polyester such as: polybutyl. This paper scale applies to the Chinese National Standard (CNS) A4 specification (210x297 mm) (10) 3184

: Diphenyl: formic acid vinegar (PBT), or polytrimethylene terephthalate comonomers such as low: two copolymerized vinegar 'such as: PET copolymer, copolymerized with j 9 · suitable monol The component is selected from the group consisting of: 1,4-cyclohexanedimethanol, diol, U_propylene glycol q, butanediol, 2,2-dimethylpropanol, l2·cyclohexanediol, Cyclohexanediol, i, 2_ methanol, U_cyclohexane dimethanol, and the chain contains one or more diols such as diethylene glycol, triethylene glycol, dipropylene glycol, Trihydric alcohol or a mixture thereof; or one or more of the other than terephthalic acid other than the 0 0 0 1 12C Ministry of Economic Affairs Intellectual Property Bureau employee consumption cooperative printing (aliphatic, alicyclic, or aromatic diacid ) Such as: isophthalic acid,! , heart-coating hexane 绫酉 、,; 1,3_cyclohexanedicarboxylic acid, succinic acid, glutaric acid, hexanoic acid, sebacic acid, U2_dodecanedioic acid, 2,6-naphthalene Dicarboxylic acid, dibenzoic acid, or a mixture thereof. A group of injured fiber shaped cancers may be a low-melting portion adjacent to a high-melting portion, such as a structure arranged side by side, or a sheath-core structure, the sheath being a low-melting component, and the core is The high-melting component, the high-melting portion may be selected from the group consisting of poly-salt, such as polyethylene, poly(tetra), and polybutene; poly-ly, such as polyethylene terephthalate (PET), polybutene Terephthalate, polyethylene naphthoate, and the like; polyamines, such as: nylon 6, nylon 66; polyacrylates, such as: polymethacrylate, polymethyl methacrylate Esters, and analogs; and mixtures and copolymers thereof. The low melting cr crucible in a suitable two component fiber melt is at least about $ 〇 C lower than the so-called two refining fractions. Suitable bicomponent fibers have a low melting portion comprising from about 5 to about 75% by weight of the two component fibers, the balance being a high melting portion, if used, for example: a 50-50 two component fiber for bonding Agent fiber, 5% by weight of low-melting paper scale applicable to China National Standard (CNS) A4 specification (210 X 297 mm) A7 B7 1283184 V. Description of invention (Ο 部 部 为 低 低 低 低 低 ' 其 其 其About 40% by weight of a tackifier (with or without a adhesion promoter, or a reinforcing agent, or a mixture thereof), and a high melting portion of 5% by weight may be PET. Regardless of other components, suitable The two component fibers are: polyethylene / 5 polypropylene, polyethylene / polyester (especially polyethylene terephthalate), polyethylene / nylon, polyester / PET, PBT / PET, PTT / PET, And mixtures thereof, preferably using polyethylene/polyester fibers such as 丄LDPE/PET, or polyethylene/polypropylene such as LLDPE/PP. When the low-melting portion and the high-melting portion of the two-component fiber When all of the parts contain polysalts, the highly molten polyene must have a lower melting point of at least 5 ° C. The Ministry of Economic Affairs, Intellectual Property Office, and the Consumer Cooperatives printed adhesion promoters include: rosin, rosin esters, and melamine-based substrates, pasteene-based substrates, and hydrocarbon-based compounds. Rosin-based tackifiers are known as: Foral 85 from Hercules, Permalyn 2085 from Eastman Chemical Company, or Escorez 5400 from Mobil Exxon 15 Chemical Company. The tackifiers are Zonarez, Zonatac and Nirez produced by Arizona Chemical Company. The tackifiers that have been commercialized with pasterin are: Picotac and Hercotac from Hercules. Commercially available as hydrocarbons. The tackifier is: Escorez 5400 from ExxonMobil Chemical Co., Ltd. The better tackifier than the 20 is rosin ester, and the glycerin of pine oil rosin is the best. The tackifier contains about 0.1 to about 40 weight. A low melt matrix of % is preferred, preferably from 5 to 10%, and preferably from 1 to 5%. In addition to the tackifier, a adhesion promoter may alternatively be used, such as: Malay Acid or maleic anhydride ΜΑΗ) Grafted polyenes, which are converted after grafting to polyolefins _____ 9 _ This paper scale applies to China National Standard (CNS) A4 specifications (210x297 public) A7 B7 1283184 V. Invention description Preferably, the perrhenic acid or succinic anhydride is added to the mash to a degree of grafting of 10% by weight (by titration). The ethylene-acrylic acid copolymer, and the combination of the above-mentioned grafted polyolefins, are also suitable as adhesion promoters. Polyethylene grafted with maleic anhydride has been commercialized, and is known as: ASPUN resin produced by The Dow Chemical Company. The commercially available ethylene-acrylic copolymers are: Bynel 2022, Byolol 21E533 and FusabondMC 190D from DuPont, and Escor acid terpolymer from ExxonMobil. The ethylene-acrylic acid copolymer is present in an amount of from about 1 to about 20% by weight, preferably from 5 to 15% by weight, based on the weight of the low melt matrix. The grafting polyene adhesion promoter is used in an amount of from about 0.05% by weight to about 2% by weight, based on the weight of the lower melt base, from about 0.05% by weight to about 2% by weight, from 0.1 to 1.5. Weight % is preferred. In addition to the tackifier and the selective adhesion promoter, a reinforcing agent may alternatively be used, and the reinforcing agent may include any of the following: titanium dioxide, talc, vermiculite, alum, calcium carbonate, calcium oxide, magnesium, and other oxidations. Preferably, titanium dioxide 15 is preferred. The reinforcing agent is used in the polymer in an amount of from about 0.1 to about 1% based on the weight of the low melt matrix. In order to achieve good dispersibility and good spinnability in the polymer, the particle size is in the range of about 4 to about 5 μm, preferably in the range of 0.05 to 2 μm. Printed by the Intellectual Property Office of the Ministry of Economic Affairs, the Consumers' Cooperatives. When a low-melt matrix containing a tackifier, any adhesion promoter, and any reinforcing agent is prepared, it is preferred to blend the masterbatch into a low melt. In the matrix, it is melt-spun into fibers by conventional techniques. The fabric of the present invention can be obtained by dry laying or wet laying, and the dry laid fabric can be produced by air laying, carding, garnet, or random carding. The air laying fabric can be used to add fibers to an air stream. 10 paper scales are applicable to the Chinese National Standard (CNS) A4 specification (210 x 297 mm). 1283184 V. Description of the invention (9) 5 ο 11 5 11 Ministry of Economic Affairs The Intellectual Property Office staff consumption cooperative prints ο 2 A7 B7, which mixes the fibers evenly and deposits them on the surface of the net. The carding method combines the fibers into separate parallel lines and separates the bundles into individual fibers. The garnet method combines the fibers in a combing process, and then joins the bonded fibers to form a fabric, and the layers of the fabric can be overlapped to increase the desired weight. The random carding method uses centrifugal force to throw the fibers into the fabric, so that the fibers have a random orientation, and a multi-layer fabric can be formed to obtain the desired amount of fabric 4, after which the dry-laid components are combined in one S. The wet laid fabric can be made using a modified paper making process in which the fibers are suspended in water, gently poured onto a web, dried, and then bonded together. The combination of the fabrics uses a bonded fiber such as the aforementioned low melt polymer fiber or two component fiber. Fabrics of fibers (bonded fibers and absorbents) can be joined together by heating, and the bonded bonding system melts the bonded fibers in the following manner: in an oven (hot air, radiation, or microwave), or a heated calender roll, Or borrow ultrasonic energy. The fabric is then cooled to solidify the molten bonded fibers. Thus, the fabric has a structure of sufficient hardness to be used as a component of the absorbent pad. The fabric is manufactured using dry-laid or wet-laid techniques, and only the binder fibers (low-melt polymer fibers or two-component fibers, or both) are mixed with the absorbent fibers (with or without SAP), and the absorbent is mixed. In the case of binder fibers, from about 5 to about 25% by weight of the binder fibers are required in the total amount of the fabric, and the remainder is mainly an absorbent. The fabric composition of the present invention may be laminated until its weight is in the range of from about 20 to about 500 grams per square foot, preferably from about 50 to about 250 gsm. The fabric can then be cut into various lengths and widths for end use applications, ie, window blinds, dentistry gardens

A7 B7 1283184 V. INSTRUCTIONS (10) Pockets, eye masks, diapers, incontinence pads, sanitary napkins, wound pads, air filters, liquid filters, and woven fabrics such as curtains, bedding, or pillows. Test Procedure 5 The dry strength of the fabric was determined in accordance with TAPPI Test Method T498 om-88. The fabric strengths for MD (machine direction) and CD (traverse direction) were measured on a strip of 25·4 χ 203.2 mm, using an Instron 1122 test machine. The test was carried out at a starting distance of 127 mm and a speed of 304.8 mm per minute, and the intensity unit was reported in grams per 25 mm. The 1〇 bond index is the square root of the product of the machine direction and the traverse direction strength. The dust was measured using a 127 X 127 mm fabric, cut into 25.4 X 25.4 mm samples, placed in a fluff fiber machine, and applied a 100 PSI air stream to the sample for 300 seconds, using a filter. The loose fibers (dust) were collected and the percentage of weight loss was reported as a percentage of 15 dust. Examples The Ministry of Economic Affairs, Intellectual Property Office, Staff Consumer Cooperatives, printed in the following examples, prepared a variety of two-component fibers with a center of 0.55 IV PET and a sheath for various compositions. The two component fibers included a 50/50 core/ 2 护套 sheath, the sheath was primarily LLDPE, and the LLDPE was Aspun XU 61800.34 (Dow 34) from Dow Chemical Company, which contained 10% by weight of added hydrazine. Before the fiber spinning, the pre-blended additives (tackifier, adhesion promoter, and reinforcing agent) are mixed with the sheath polymer, and the tackifier is first mixed with the 40% concentrated sheath polymer. After spinning and elongation, the two sets of 12 I paper scales are applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm). A7 1283184 B7 5. Inventive Note (η) The fiber is cut into 6 mm length. The fabric comprises 12% by weight of two component fibers and 88% by weight of wood pulp, the type of wood pulp used is Waco 416, and the percentage of tackifiers, adhesion promoters, and reinforcing agents used in the examples (as shown in the tables) , based on the weight of the low melt base. Example 1 The various two-component fibers are shown in Table 1. The adhesion promoter was a maleic anhydride-based polyene obtained from Dow Chemical Company's ASPUN XU 60769.07.

10 (Dow07), ethylene-acrylic acid copolymer, available from DuPont's BYNEL 2022 and ESCO-Europe's ESCOR AT-325. The tackifier is a pine oil rosin glycerin S from Eastman. Chemical company's PERMLYN 2085. The nonwoven fabric was produced from these two-component fibers by a wet lay method to give a basis weight of 51 g/m 2 . The fabric samples were dried at 100 ° C for 32 seconds and then placed in a hot air oven for 15 seconds to bond them. The bond index is shown in Table 1 and compared to a control sample without a tackifier. Ministry of Economic Affairs, Intellectual Property Bureau, Staff Consumer Cooperatives, Printing 3 11 This paper scale applies to China National Standard (CNS) A4 specification (210x297 mm) A7 B7 1283184 V. Description of invention (12) Table 1 Fiber adhesion promoter, % tackifier ,% combined with temperature,. C binding index, g / 25 mm relative to control sample, % control sample Dow 07, 10% without 135 250.9 1 Bynel 2022, 5% Permalyn, 5% 135 368.9 47.0 2 Escor AT 325, 5% Permalyn, 5% 135 285.4 13.8 3 Dow 07, 5% Permalyn, 5% 135 388.1 54.7 4 Escor AT 325, 8% Permalyn, 2% 135 281.1 12.0 This example shows the use of tackifiers and adhesion promoters with improved I 〇 tensile strength . Example 2 In this example, a wet laid fabric was prepared in the same manner as in Example 1, and the effect of the amount of the adhesion promoter and the tackifier on the strength of the fabric was examined. The composition of the 15 component and the binding index are reported in Table 2. The control sample is a sheath that does not contain a adhesion promoter or tackifier. Ministry of Economic Affairs, Intellectual Property Bureau, Staff and Consumer Cooperatives Printed on this paper scale Applicable to China National Standard (CNS) A4 Specification (210x297 mm) 1283184 V. Invention Description (13) A7 B7 Table 2 Fiber Adhesion Promoter, % Adhesive, % Combined temperature, X: bonding index, g / 25 mm relative to control sample, % none

Dow 07, 5% Dow 07, 10% none

Dow 07, 5% Dow 07, 10% none

Dow 07, 5% Dow 07, 10% none

Dow 07, 5% Dow 07, 10% None None None None

Permalyn, 5% Permalyn, 5% Permalyn, 5% Permalyn, 10% None None None

Permalyn, 5% Permalyn, 5% Permalyn, 5% Permalyn, 10% .3.7.2.4 20.1 4· 3 4 3 3 2-2.4.34. 6.7.303017 135 314.3 135 267.0 135 339.7 135 415.7 135 442.2 135 412.5 135 422.3 175 378.3 175 345.7 175 401.6 175 405.7 175 493.4 175 492.9 175 444.3 5 1 Ministry of Economic Affairs Intellectual Property Office Staff Consumer Cooperative Printed ο 2 This example shows that the fabric can be modified using only tackifiers without the use of adhesion promoters. Combine the index. Example 3 This example uses the fabric prepared according to Example 1 to investigate the effect of the amount of tackifier. The two component composition and binding index are reported in Table 3. The control sample is a sheath comprising 5% Dow 07 bonding. Promoter. This paper scale applies to China National Standard (CNS) A4 specification (210 X 297 mm) 1283184 V. Invention description (14) A7 B7 Table 3 Fiber adhesion promoter, % tackifier, % combined temperature. C binding index, g / 25 mm relative to control sample, % control sample Dow 07, 5% no 135 210.1 11 Dow 07, 5% Permalyn 2085, 1% 135 337.7 60.8 12 Dow 07, 5% Permalyn 2085, 2.5% 135 346.3 64.8 13 Dow 07, 5% Permalyn 2085, 3.75% 135 352.6 67.8 14 Dow 07, 5% Permalyn 2085, 5% 135 401.6 91.2 Control sample Dow 07, 5% no 175 268.2 11 Dow 07, 5% Permalyn 2085, 1 % 175 431.0 60.7 12 Dow 07, 5% Permalyn 2085, 2.5% 175 351.4 31.0 13 Dow 07, 5% Permalyn 2085, 3.75% 175 456.1 70.1 14 Dow 07, 5% Permalyn 2085, 5% 175 452.7 68.8 •+JI • Line • This example shows that using only 1% by weight of a low amount of tackifier can still significantly improve the bond index. Ministry of Economic Affairs Intellectual Property Bureau Staff Consumer Cooperatives Printing Example 4 Two component fibers were prepared according to Example 1, and these fibers were air laid with wood pulp to obtain a fabric having a basis weight of 175 g/m 2 and the fabric was dried. The device was retained at 140 or 175 ° C for 15 seconds. The two component composition and binding index are reported in Table 4. The control sample was a sheath containing 10% Dow 07 adhesion promoter. In this example, 16 paper scales are applicable to the Chinese National Standard (CNS) A4 specification (210x297 mm) 1283184 μ B7 5. Inventive Note (15) To make a titanium dioxide enhancer, titanium dioxide system with a concentration of 35% and sheath Polyethylene (Dow 34) was prepolymerized. Table 4 Fiber adhesion promoter, % tackifier, % titanium dioxide, % combined temperature, °C bonding index, g / 25 mm relative to control sample, % control sample Dow 07, 10% no 140 267.0 15 Dow 07, 5 % Permalyn 2085, 2.5% without 140 342.4 28.2 16 Dow 07, 5% Permalyn 2085, 2.5% 0.70 140 414.9 55.4 17 Dow 07, 5% Permalyn 2085, 2.5% 0.35 140 398.9 49.4 18 Dow 07, 5% Permalyn 2085, 5 % 0.35 140 413.8 55.0 19 Dow 07, 5% Permalyn 2085, 5% 0.70 140 348.0 30.3 The use of an enhancer improves the binding index. The dustiness of the air laying method was worrying. The control samples and the fabrics of Tests 16 and 19 were combined at 140 ° C and dust was measured. The results are shown in Table 5. Ministry of Economic Affairs Intellectual Property Bureau Employees Consumption Cooperatives Printed on this paper scale Applicable to China National Standard (CNS) A4 specification (210 X 297 mm) A7 B7 1283184 V. Invention description (16) Table 5 Fiber adhesion promoter, % tackifier , % titanium dioxide, % combined with temperature. C Dust, % Dust reduction control sample Dow 07, 10% No 140 7.95 16 Dow 07, 5% Permalyn 2085, 2.5% 0.70 140 6.45 18.9 17 Dow 07, 5% Permalyn 2085, 5% 0.70 140 6.96 12.5 Containing enhancer The tackifier reduces dust formation. Thus, in accordance with the present invention, it is apparent that a binder fiber containing a tackifier, and a fabric made therefrom, can fully achieve the objects, objectives, and advantages set forth above. While the invention has been described with respect to the specific embodiments thereof, it is apparent that many modifications, modifications, and variations are apparent to those skilled in the art in the foregoing description. Variations are included in the precise and broad scope of the dependent items of the scope of the invention. [Simple illustration] No Ministry of Economic Affairs Intellectual Property Bureau employee consumption cooperative printing This paper scale applies China National Standard (CNS) A4 specification (210x297 mm)

Claims (1)

1283184 VI. Application for patent A8 B8 C8 D8 Patent application No. 92100281 ROC Pater^ \ρρ1η. Νο.92100281 After the amendment, there is no scribe line 4 Patent Scope Text - Attachment Amended Claims in Chinese ~ ΡΓη^|, ( Τ}) λ Chines (2); (Represented in the Republic of China on the 2nd and 9th of January 1995) KSubmitted οΰ Octdbef t% 200〇) 4 Μ Ι.^':ν I ^cr r.- :;·^=^3ϊπ ^*=κε=τΓ-*, "»^??.»*^··^ An improved binder fiber comprising a low melt polyolefin matrix and from about 0.1 to about 40 wt.% tackifier The tackifier is selected from the group consisting of a rosin, a rosin ester, a terpene-based substrate, a pasteene-based substrate and a hydrocarbon-based compound, wherein the low-refining polyolefin matrix is low-melting. The bulk fiber, the low smelting portion of the two component fibers, or both, and the selected group are selected from the group consisting of polyethylene, polypropylene, polybutene, or mixtures thereof. 2. The improved binder fiber according to the first aspect of the patent application, wherein the two component fiber has a high melting portion. 3. The improved binder fiber according to item 2 of the patent application, wherein the high melting portion is selected from the group consisting of polyamine, polyester, polyolefin, polyacrylic acid, and mixtures thereof. 4. The improved binder fiber according to claim 3, wherein the high melting portion is a polyester. 5. The improved binder fiber according to item 3 of the patent application, wherein the high melting portion is a polyolefin. Printed by the Ministry of Economic Affairs, Intellectual Property Bureau, and the Consumers' Cooperative. 6. The modified binder fiber according to claim 2, wherein the low melting portion is from about 5% by weight to about 75% by weight of the two component fibers. . 7. The improved binder fiber according to the scope of the patent application, wherein the polyethylene is selected from the group consisting of HDPE, MDPE, LDPE, LLDPE, ULDPE, or a mixture thereof. 8. The improved binder fiber according to claim 1, wherein the polyester and the copolyester are selected from the group consisting of: polybutylene terephthalate-19 - the paper scale applies to the Chinese national standard (CNS) ) A4 size (210x297 mm) 91586 range · 1283184 Six Ministry of Economic Affairs Intellectual Property Bureau Staff Consumer Cooperatives Printed A8 B8 C8 D8 Patented Fan Yuan (PBT), or Polytrimethylene Terephthalate (ρττ), a low-melting copolymerized vinegar, such as: a copolymer of ruthenium, a co-monomer copolymerized therewith, such as: a suitable diol fraction selected from the group consisting of 1,4_cyclohexanol, ι, 2 _ Propylene glycol, 1,3-propanediol, μ-butanediol, 2,2-dimethyl-1,3-propanediol, 1,6-hexanol, 1,2-cyclohexane diol, 1,4 a cyclohexane diol, 1,2-cyclohexanedimethanol, 1,3-cyclohexanedimethanol, and a diol containing one or more oxygen atoms in the chain, such as diethylene glycol, triethyl ethane a diol, dipropylene glycol, monopropyl Sf*, or a compound thereof, or one or more diacids other than terephthalic acid, (aliphatic, alicyclic, or aromatic dicarboxylic acid) : isophthalic acid, 1,4-cyclohexanedicarboxylic acid, 1,3-cyclohexanedicarboxylic acid, succinic acid, glutaric acid, adipic acid, sebacic acid, 1,12-12 Alkanoic acid, 2,6-naphthalene dicarboxylic acid, dibenzoic acid, or a mixture thereof. 9. The improved binder fiber according to claim 1, wherein the low-refined polymer fiber is mainly the low-smelt matrix and the tackifier. 10. The modified low-melt matrix additionally comprises an adhesion promoter according to the modified binder fiber of claim 1 of the patent application. 11. The improved binder fiber according to claim 10, wherein the adhesion promoter is selected from the group consisting of: maleic acid or maleic anhydride grafted polyhydrocarbon, ethylene-acrylic acid copolymer, or combination. 12. The improved adhesive of claim 11, wherein the grafted polyolefin comprises added maleic acid or maleic needles in the range of from about 0.05 to about 2.0% by weight of the low melt matrix. 13·Improved adhesive agent according to the scope of patent application No. 11 of which -20. This paper scale applies to China National Standard (CNS) A4 specification (210 X 297 public) 1283184 A8 B8 C8 D8 VI. Patent application scope The ethylene-acrylic acid copolymer is present in an amount ranging from about 1 to about 20 weight percent of the low melt matrix. 14. The improved binder fiber according to claim 10, wherein the bicomponent fiber has a high melting portion. 15. The improved binder fiber according to claim 14, wherein the high melting portion is selected from the group consisting of polyamine, polyester, polyolefin, polyacetic acid vinegar, and mixtures thereof. 16_ The improved binder fiber according to claim 15 wherein the high melting portion is a polyester. 17. The improved binder fiber according to claim 15 wherein the high melting portion is a polyolefin. 18. The improved binder fiber of claim 1, wherein the low melt matrix further comprises an enhancer. 19. The improved binder fiber according to claim 18, wherein the reinforcing agent is selected from the group consisting of titanium dioxide, talc, vermiculite, alum, calcium carbonate, calcium oxide, and magnesium oxide. Printed by the Ministry of Economic Affairs, Intellectual Property Office, Staff Consumer Cooperative 20. The modified binder fiber according to claim 18, wherein the reinforcing agent is present in an amount ranging from about 0.1 to 1.0% by weight of the low melt matrix. 21. The improved binder fiber according to claim 18, wherein the bicomponent fiber has a high melting portion. 22. The improved binder fiber according to claim 21, wherein the high melting portion is selected from the group consisting of polyamine, polyester, polyolefin, polyacrylate, and mixtures thereof. -21 - This paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 mm) 1283184 A8 B8 C8 D8 VI. Patent application scope 23. According to the modified binder fiber of claim 22, The high melting portion is polyester. 24. The improved binder fiber according to claim 22, wherein the high melting portion is a polyolefin. 25. A nonwoven fabric comprising a binder fiber and an absorbent, the binder fiber comprising a low melt polyolefin matrix and from about 0.1 to about 40 wt.% of a tackifier selected from the group consisting of rosin, a group of rosin esters, a terpene-based matrix, a mixture of amyrosin and a hydrocarbon-based compound, wherein the low-melt matrix is a low-melt fiber, and the low-melting portion of the two-component fiber Or both, and the group selected from the group consisting of polyethylene, polypropylene, polybutene, or mixtures thereof. 26. The fabric of claim 25, wherein the binder fiber is from about 5 to 25% by weight of the fabric. 27. The fabric of claim 25, wherein the absorbent comprises: a natural absorbent, a superabsorbent polymer, or both. 28. The fabric of claim 25, wherein the two component fibers have a high melting portion. Printed by the Ministry of Economic Affairs, Intellectual Property Office, Staff Consumer Cooperatives. 29. The fabric according to claim 28, wherein the high melting portion is selected from the group consisting of polyamine, polyester, polyolefin, polyacrylate, and mixtures thereof. . 30. The fabric of claim 29, wherein the high melting portion is a polystyrene. The fabric of claim 29, wherein the high melting portion is a polyolefin. -22 - This paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 mm) 1283184 A8 B8 C8 D8 VI. Patent application scope 32. According to the scope of claim 25, the low melt polymerization The fibers are primarily low melt matrices and the tackifier. 33. The fabric of claim 25, wherein the polyethylene is selected from the group consisting of: -HDPE, MDPE, LDPE, LLDPE, ULDPE, or mixtures thereof. Printed by the Intellectual Property Office of the Ministry of Economic Affairs, Employees' Consumption Cooperatives 34. The fabric according to claim 25, wherein the polyester and the copolyester are selected from the group consisting of: polybutylene terephthalate (pBT) Or polytrimethylene terephthalate (PTT), a low-melting copolyester, such as a copolymer of PET, a co-monomer copolymerized therewith, such as a suitable diol component, selected from: 1,4_cyclohexanedimethanol, 12•propylene glycol, 13•propylene glycol, butanol, 2,2-dimethyl-1,3-propanediol, ι,6-hexanediol, 1,2-cyclohexane A diol, a 1,4-cyclohexane diol, a cyclohexane dimethanol, a 1,3-cycloheximide dimethanol, and a diol containing one or more oxygen atoms in the chain, such as diethylene glycol , triethylene glycol, dipropylene glycol, tripropylene glycol, or a mixture thereof; or one or more diacids other than terephthalic acid, (J! 曰 aliphatic, alicyclic, or aromatic dicarboxylic acid) Such as: isophthalic acid, 1,4-hexane hexane dicarboxylic acid, iota, cyclohexanedicarboxylic acid, succinic acid, glutaric acid, adipic acid, sebacic acid, 1,12_12 Alkanoic acid, 2, naphthalene dicarboxylic acid, diphenyl Acid, or a mixture thereof. 35. The fabric of claim 25, further comprising a adhesion promoter in the low melt matrix. The fabric of claim 35, wherein the adhesion promoter is selected from the group consisting of: maleic acid or maleic acid grafted polythene, ethylene-acrylic acid copolymer, or a combination thereof. -23 - This paper size applies to China National Standard (CNS) A4 specification (210x297 mm) 1283184 A8 B8 C8 D8 VI. Patent application scope 37. According to the scope of claim 36, the grafted polyolefin contains The added maleic acid or maleic anhydride is in the range of from about 0.05 to about 2.0% by weight of the low melt matrix. 38. The fabric of claim 36, wherein the ethylene-acrylic copolymer is present in an amount ranging from about 1 to about 20 weight percent of the low melt matrix. 39. The fabric of claim 35, wherein the two component fibers have a high melting portion. 40. The fabric of claim 39, wherein the high melting fraction is selected from the group consisting of polyamines, polyesters, polyolefins, polyacrylates, and mixtures thereof. 41. The fabric of claim 40, wherein the high melting portion is a polyester. 42. The fabric of claim 40, wherein the high melting portion is a polyolefin. 43. The fabric of claim 25, wherein the low melt matrix further comprises a reinforcing agent. Printed by the Economic Intelligence Intellectual Property Office Staff Consumer Cooperatives 44. The fabric according to claim 43 of the patent application, wherein the enhancer is selected from the group consisting of: titanium dioxide, talc, vermiculite, alum, calcium carbonate, oxidation #5, and oxidation town. 45. The fabric of claim 43, wherein the reinforcing agent is present in an amount ranging from about 0.1 to 1.0% by weight of the low melt matrix. 46. The fabric of claim 43, wherein the two component fibers have a high melting portion. -24 - This paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 mm) 1283184 = Bo C8 _D8_ VI. Patent application scope 47. According to the scope of claim 46, the high melting part The selected classes include: polyamines, polyesters, polyolefins, polyacrylates, and mixtures thereof. 48. The fabric of claim 47, wherein the high melting portion is a polyester. 49. The fabric of claim 47, wherein the high melting portion is a polyolefin. Printed by the Intellectual Property Office of the Ministry of Economic Affairs, the Consumer Cooperatives. This paper scale applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm).