TW479087B - Pulp-modified bicomponent continuous filament nonwoven webs and articles - Google Patents

Abstract

Absorbent nonwoven web composites exhibit a combination of excellent strength, softness and absorbency. The composites utilize a combination of substantially continuous bicomponent thermoplastic filaments, and pulp fibers. The substantially continuous bicomponent filaments distribute liquid insults an contribute durability and softness. The pulp fibers and, optionally, a superabsorbent, absorb and contain the liquid.

Description

A7 B7 V. The Invention. Ming (Invented the bracelet Yuji this month about non-woven fabric components, which shows excellent strength, softness, elasticity and absorbency. More specifically, the present invention is about containing pulp ... Non-woven fabrics that are a mixture of continuous single fibers. Pulp can be mixed with one or more superabsorbent materials. The invention relates to products made of non-woven fabrics with various desirable properties. In this class In the technology, two-component non-woven single fibers are well known, such as using two different polymers to y to be mixed in a different phase in the dimension. Unlike the homogeneous mixing, the two polymers can be juxtaposed to each other. The-side of the fiber is composed of the first polymer "eight" and single fiber; one = the second polymer "B". Alternatively, the polymer may be mixed in a slightly core form, = the sheath layer is polymerized The composition "A", and the inner core 2. Composition. Alternatively, the polymers can be mixed in a sea-island style, it: It is like in the sea (the second polymer "B" is one or many small islands. It can also be Other heterogeneous forms. The single fiber material provides a lot of t. For example, the polypropylene resin can make the fiber placed, and the ethylene tree can not produce a specific poly = two: raw single fiber is soft but not strong. The fibers are mixed in a ㈣ style to achieve both strength and softness. T-bonded carbon atoms' stagnation stone, ion exchange resin dimension 'or bi-component single fibers for gas absorption fibers used in special perforated materials = W scale i for use' national 479087 A7 B7 V. The invention is disclosed (2). Ugata et al., US Patent No. 5,67〇, (M4 No. discloses a two-component melt-blown sheet of such a mixing method used in a cylindrical filter. Fiber. In this case, the bicomponent single fiber contains high and low melting polymers. By melting the low melting component, the single fibers of the filter are stacked and joined together.

I Pulp fibers have been used in specific absorbent applications to improve absorbency. U.S. Patent No. 4,53,353, Lauritzen et al. Discloses pulp fibers that are short bicomponent fibers used in the manufacture of absorbent bandages. In this case, the fibers also contain high and low melting polymers. Short fibers are held together by melting low-solubility components. There is a need or desire for an absorbent nonwoven fabric that combines both durability and softness with good liquid distribution. This need is important for diapers, training pants, wipes, and other personal care absorbent products that require comfort, strength, and absorbency.发明 发明 i 术 # Printed by the Intellectual Property Office of the Ministry of Economic Affairs and Consumer Affairs Bureau This invention relates to an improved composition of absorbent nonwoven fabrics and personal care absorbent articles made using the improved composition. This absorbent nonwoven fabric consists of a mother fabric comprising bicomponent thermoplastic nonwoven single fibers of fully continuous length. The continuous single fiber matrix contains a certain amount of pulp fibers. & Full continuous bicomponent single fibers are not cut to length when the nonwoven fabric is formed, but short length single fibers that are cut to one to several inches provide better liquid distribution. Ideally, the polymer in the bi-component single fiber can be selected so that at least one polymer can provide the strength and durability of the nonwoven fabric, and at least one polymer provides the flexibility The absorbent pulp fiber content can reach 97% by weight, which is contained in continuous single fiber matrix and has the paper size applicable to China National Standard (CNS) A4 each (210 X 297 mm T ′ vwm / 一 ρζ-ηη 7 -η an A7 V. Invention Description (3) Strength and durability are the same as longer lengths. Note that in the foregoing, the features and advantages of the present invention are to provide an absorbent nonwoven fabric composition that has both durability and softness. Another advantage and feature of this month is that it provides an absorbent nonwoven fabric composition with high pulp load in the continuous single fiber matrix, regardless of whether the pulp fibers are wet or dry. The continuous single fiber matrix may also contain superabsorbency Substance. Another feature and advantage of the present invention is to provide an absorbent article, such as a diaper, which exhibits comfort, strength, and absolute durability due to the composition of the absorbent nonwoven fabric of the present invention. The definition of "nonwoven fabric or web, (nonwoven fabric or web) refers to a fabric with individual fibers or texture construction, which is laid inward, but not in a regular or single way in knitwear. Non-woven fabrics or fabrics can be made by many methods, such as melt-blowing, spin-bonding, air-laying, and bonded scrim methods. Non-woven fabrics are usually weighted in ounces per square yard (〇sy ) Or grams per square meter (gsm), and the fiber diameter used is usually expressed in microns. (Note ^ • To convert osy to gSm, multiply 〇Sy by 33.91). "Microfiber" ( microfiber) refers to small diameter fibers with an average diameter of not more than 75 microns, for example, an average diameter of 1 micrometer to 50 micrometers, and more specifically, an average diameter of 1 micrometer to 30 micrometers. Another unit commonly used to represent fiber diameter is "Danny", which is defined as 1 gram per 9000 meters of fiber. For fibers with a circular cross section, the fiber diameter (micrometer) squared can be multiplied by its density (g / cc). , Then multiply by 〇〇〇07 〇7 Danny 丹. Danny 'paper size applies Chinese National Standard (CNS) A4 specification (210 X 297 mm) Λ {Please read the notes on the back first and fill in this page) • Packing ----- -Order ------- Li YYW-P ^ ηηκη ^ η 479087 A7 printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economy Ⅴ. Invention. Ming (4) 4 Lower means thinner fibers, while Danny Higher 値 indicates thicker or heavier fibers. For example, a polypropylene fiber with a diameter of 15 micrometers can be squared, multiplied by 0.89 g / cc, and then multiplied by 0.00707 to convert it into denier. Therefore, the denier of 15 micron polypropylene fiber is about 1.42 (152 X 0.89 x 0.00707 = 1.415). Outside the United States, the measurement sheet is usually "tex" (tex), which is defined as how many grams per kilometer of fiber. Divide Denny 値 by 9 to get a taxi. "Spunbonded fibers" refers to fibers of small diameter, which are manufactured by ejecting and melting a thermoplastic substance, as a single fiber produced from many thin capillary tubes with a circular shape and / or other forms Then, the diameter of the ejected single fiber can be determined by U.S. Patent No. 4,34〇, 563 issued by Appel et al., U.S. Patent No. 3,692,618 issued by Dorschner et al., And U.S. Patent issued by Matsuki et al. No. 3,8,02,817, U.S. Patent Nos. 3 338 992 and 3,341,394 issued by Kinney et al., U.S. Patent No. 3,502,763 issued by Hartman f, U.S. Patent No. issued by Petersen et al. No. 3,502,538 'Dob. U.S. Patent No. 3,542,615 published by et al., Whose content is in & and referenced by sigma__ when the bonded fibers settle on the collection surface, it will repel fire and usually will not stick. Spun bonded fibers are usually continuous and the average diameter is usually greater than 7 microns, more specifically between about microns. "Melfblown fibers" refers to fibers formed by injecting molten thermoplastic material through a number of fine, usually circular mold capillaries, as if the fiber of a private order is concentrated in high-speed heating steam (such as air) In order to make the solvent paper size applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 public copy YHW-Pi ^ -ηηκη ^ η (please read the precautions on the back first and fill in this page)) Fitting, " T 丨 丨丨 丨 7 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (5 = heat = fiber becomes thinner to reduce its diameter, but it can be microfiber diameter. H cut dimension is transported and sunk by high-speed steam It is easy to form a randomly distributed Ewei fabric. For example, this = National Patent No. Qing-Hu. Continuous or discontinuous ::: == Dimension 'Its diameter is usually less than 1G micrometer, and when Shen Dian is fighting on the surface of the collection: said himself The melt-blown fibers used in the present invention are completely continuous in length. "Pulp fiber" refers to fibers formed from natural materials such as wood or non-mussel plants. Woody plants include, deciduous and Number of needles. Non-woody plants include '#' flax, Stipa forage, milkweed, rice, wheat, jute, and bagasse. Average pulp Hber length refers to the average weight-bearing length of the pulp. Measured from Kajanni Oy Eiectronics, Kajani Oy Eiectronics in Kajaani, Fininand, Modei NoFS-100. During the test procedure, the fiber sample is soaked so that it does not produce fiber bundles or Debris. Disperse each fiber sample in hot water and dilute to a concentration of 0.001%. Remove each test sample from 50 to 500 ml of the diluted solution and test using standard Kaj aani fiber analysis procedures. Load-bearing average fiber length It can be expressed by the following formula: η where κ = the maximum length of fiber length, Xe individual fiber length, ni = number of fibers with length Xi This paper size is applicable to China National Standard (CNS) A4 (210 X 297 public love)

·, Installed ---. --- 11 order, ----fill out this page) 0 printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 479087 A7 B7 V. invention. Ming (6) n = measured fiber The total "superabsorbent material" refers to a water-swellable, water-insoluble organic or inorganic substance. In the best case, this substance can absorb at least 20 of it in a 0.9% by weight aqueous sodium chloride solution. Times the weight, ideally 30 times its weight. "Polymer" generally includes, without limitation, homogeneous polymers, copolymers (including block, graft, random and alternating copolymers), terpolymers, etc., as well as mixtures and modifications thereof. Or, unless specifically limited, "polymer" shall include all possible geometric structural materials. These structures include (but are not limited to) isomorphs, opposite rows, and irregular symmetry. "Bicomponent single fiber or fiber" (Biocomponent filaments or fibers) refers to fibers formed from at least two polymers. The polymers are individually ejected from different ejectors but combined to form a fiber. The polymer is completely fixed on the cross-section of the bicomponent fiber. Arranged in other areas and extend continuously along the length of the bicomponent fiber. The structure of such bicomponent fibers can be a sheath-core form of a polymer surrounding the other, or a side-by-side or "sea island" arrangement. The bicomponent fibers are in Kaneko U.S. Patent No. 5,108,820, published by et al .; U.S. Patent No. 5,336,552, published by Strack et al .; U.S. Patent, published by Pike et al. It is disclosed in No. 5,3 82,400, the content of which is incorporated herein by reference. For bicomponent fibers, the polymer ratio can be 75/25, 50/50, 25/75 or other desired Proportion. Traditional additives such as pigments and surfactants can be incorporated into one or two polymers, or added to the surface of single fibers. "Substantially continuous filaments of fibers" refers to the ejection from the spinneret The prepared single fiber includes (but is not limited to) the size of this paper applies the Chinese National Standard (CNS) A4 (210 X 297 mm) (please read the notes on the back first and fill in this page) ---------- 479087 A7 _B7 V. Invention. Ming (7) Spinning bonded and meltblown fibers should not be cut before forming non-woven fabrics or fabrics. The average length of completely continuous single fibers It can range from 15 cm to more than 1 meter, and up to the length of the nonwoven fabric or fabric. The meaning of "fully continuous single fiber" includes not cutting before forming the nonwoven fabric or fabric, but when the nonwoven fabric or fabric is not cut, What is cut when the fabric is cut "Staple fibers" refers to fibers cut from natural fibers manufactured or made of natural fibers before forming a fabric, with an average length of 0.1-15 cm, usually between 0.2-7 cm 〇 "Personal care absorbency "Personal care absorbent articles" include diapers, training pants, swimwear, absorbent panties, baby wipes, adult incontinence products, and feminine hygiene products. "Through-air bonding" or "TAB" means A method for bonding non-wovens, for example, in a bicomponent fiber fabric, the air is sufficiently heated to melt one of the polymers in the fabric fibers produced by the fabric forcing. Air speed is usually between 100 and 500 feet per minute and the time required is 6 seconds. Melting the polymer and re-solidifying can cause a bond to form. Air bonding restricts variability and is often used as the second step in the bonding process. Because TAB needs to melt at least one component to complete the bonding, two-component fabrics (such as bi-component fiber fabrics or fabrics) are restricted from containing adhesives or powders. "Thermal point bonding" refers to transporting a fibrous woven fabric or fabric to bond between a heated calender roll and an anvil roll. Calender rollers are usually (but not always) embossed in some areas so that the entire fabric section is bonded to the entire surface. Therefore, the calender roller can be provided with various patterns as a function of increasing aesthetics. One example of the pattern has many dots and has a 30% sticky national standard (CNS) A4 specification (210 X 297 mm) of 200 bundles per square inch / 0 YNW ^ p ^ .nn i _n rqc \ (Please first Read the notes on the back and fill in this page) • ir ^ J · Η 1111 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 479087 Printed clothing A7 by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Disclosure of the Invention Ming (8) He Fan Yuan's pattern or Hansen Pennings, as described in US Patent No. 3,855,046 issued by Hansen and Pennings et al. The H & P pattern has square dots or stitch areas, where the side dimension of each stitch is 0.038 inches (0.965 mm). The spacing between the stitches is 0.070 inches (1 778 mm), and the bonding depth is 0.0023 inches. (0. A final pattern of 29.5% bonding area is formed. Another typical point bonding pattern is an expanded Hansen and Pennings or "EHp" bonding pattern, which results in a 15% bonding area with square needles with a side dimension of 0.037 Yingye (.94 mm) needle spacing is 〇97 Yingye ^ 464 and depth is 0 inches (0.991 mm). Another typical point bonding pattern is called "714", which has a square needle bonding area ' The size of each side of the needle is · 3 inches, the interval between the needles is 0_〇62 inches (I · 575 surface), and the bonding depth is 00% inch (〇㈣ surface). The final pattern has 15% adhesion area. Another common pattern is a shape pattern with 16.9% adhesion area. The C-star pattern has horizontal rods or "wicks," designed by meteor-like objects. Other common patterns Includes diamond patterns with repetitive, slightly offset diamonds, as they appear to be A cable weaving pattern, such as a yarn from itself. Generally, the percentage of the bonded area is between 10% and 30% of the area of the woven laminate fabric. As is known in the art, the bonding points can bond the laminate Are fixed together, and the individual layers are united by bonding single fibers or fibers in each layer. BEST MODE FOR CARRYING OUT THE INVENTION Detailed Description The present invention relates to an absorbent nonwoven fabric composition which comprises a continuous Bicomponent thermoplastic single fiber and pulp fibers contained between the single fibers. This absorbent nonwoven fabric contains 5-97% by weight of pulp fibers and 3-95% by weight of fully continuous bicomponent thermoplastic single fibers. Better In the case, (Please read the precautions on the back first and fill in this page) Φ

: --- Ί ^ I # This paper size applies to Chinese national standard (CNS> A4 size (210 X 297 mm) ΥΗ \ Λ / -Ρ ^ ηηκη ^ η 479087 V. Description of the invention (9) Non-woven fabric The composition contains 35-95% by weight of paper fibers and 5 65% by weight of fully continuous bicomponent thermoplastic single fibers. More desirably, the absorbent non-woven fabric composition contains 50_95% by weight of paper polyfibers and 5_50% by weight Two-component thermoplastic single fibers. Fully continuous two-component thermoplastic single fibers may have any of the above-mentioned two-component structures. Ideally, 'single fibers may have a side-by-side structure or a sheath-core structure. In these configurations, the single fibers and the polymerization within the single fibers The material is completely continuous in length. The completely continuous single fiber can be ㈣bonded single fiber or fiber microfiber, ^ average diameter is usually between 1.75 microns. Ideally, the continuous continuous single fiber, quasi average The diameter is ㈣ microns, ideally i-30 microns. The method of making fully continuous single fibers can also be used. The single fibers can also be creped using techniques known to those skilled in the art. Full continuous two-component Single fiber Contains less two thermoplastic polymers. Physical phase = complete continuous bicomponent single fiber contains the first polymer, which can add: ^ the desired first property; and the second polymer, which can add single fiber corpse Examples of the first and second desired properties include (but are not limited to) durability and softness, durability and wettability, wettability and seasonal softness, durability and aesthetics, And other desired combinations. Of course, the first polymer may provide one or more desirable properties, and the second polymer may also provide one or more desired additional properties. In addition, a bicomponent single fiber may include two It is different from the above polymers, and each polymer provides its own unique properties. Furthermore, the bicomponent single fiber may include a mixture of individual polymers having desired properties, which are adjacent to or mixed with another-different polymer. Adhesives, such as pigments and hydrophilic modifiers, can be incorporated into polymers or added to the surface of single fibers. Shi's Zhang scale suitable for the country | (CNS) A4 specifications ⑽Χ 297 公 ^ 丁 定 # \ / lj \ a / dl ^ nm r \ mr \ V. Invention theory. (10) Examples of polymeric compositions that provide persistence to two-component single fibers include, but are not limited to, polypropylene homogeneous polymers; containing 0% ethyl acetate or other C4-C: 20cx-fluorene hydrocarbons Co-monomer polypropylene copolymer; high-density polyethylene, straight-chain low-density polyethylene, which contains less than 10% by weight of an α-hydrocarbon comonomer, polyamide, polyester, polycarbonate Salt 'polytetrafluoroacetam, and other high-tensile substances. Generally, when the non-woven fabric is made of a bi-component single fiber containing a first polymer, the first polymer can be said to provide a bi-component single fiber Permanent, and the second polymer can resist a tensile load of at least 10%, and it is at least chest or more on the male and female, which is better than similar nonwoven fabrics made of single fibers containing only the second polymer. Examples of polymeric compositions that provide elasticity and softness to two-component single-fiber fabrics include (but are not limited to) high pressure (text chain) low-density polyethylene; cardiene-containing comonomers above 1G% by weight Low-density polyethylene, copolymers with at least one ethyl acetate monomer (such as ethyl acetate), ethylene copolymers with unsaturated polyacids (containing vinegars), and any "associations" with 2-20 carbon atoms Smoke copolymer, the content of both comonomers exceeds 10% by weight of the copolymer (including ethylene propylene rubber). #Including thermoplastic urethane, Α_Β and Α_Β_Α, the shape copolymer 'where Α and Α' position Block material at the thermoplastic end and B is negative for premature block. Roughly when the non-woven fabric is made of single fiber containing the first polymer and the second polymer and its ratio contains only the first polymer When similar non-woven fabrics made by Wuzhiminwei are more elastic or soft, the elasticity or softness of the two-component non-woven fabric can be said to be provided by the second polymer. The thermoplastic non-woven fabric can be provided. Examples of wet polymers include ( But it is not limited to this) Pyridamine 'U 埽 Acetate 4-Polyethyl Ethyl Acetate, Pento V. Ethyl Acetate Acetate and Other Hydrophilic Substances of the Invention Description (π) If it contains first and second polymers The water droplets on the non-woven fabric made of bicomponent single fiber are contact angles are as follows: a) measured by ASTM D724_89 less than 9G degrees, b) the ratio of similar non-wovens made of single fiber containing only the first polymer The woven fabric has a small contact angle, so the wettability of the heterocomponent single fiber is usually provided by the second polymer. When used as the outer layer of the core bicomponent single fiber fabric, the hydrophilic polymer adds the entire mesh Surface wettability. Of course, 'if the polymer is desired to provide the desired properties of the non-woven bicomponent single fiber, the amount of each polymer in the single fiber must be sufficient. In principle, a fully continuous thermoplastic single fiber contains 10-90% Weight of the first polymer and 10-90% by weight of the second polymer. Ideally, the two-component single fiber contains 25-75% by weight of each polymer, and more preferably, 40-6 of each polymer. 〇% by weight. Where fully connected% thermoplastic bicomponent nonwoven single fiber Dimensions can be combined with pulp fibers using methods known in the art. For example, a co-formation method can be used in which at least one meltblown die head is placed near a chute through which other substances pass The co-formation method is disclosed in U.S. Patent No. 4,818,464 published by Lau et al. The disclosure is hereby incorporated by reference. Completely continuous bicomponent single fibers and pulp fibers can also be combined using hydraulic kink or mechanical kink. The hydraulic kink method is disclosed in US Patent No. 3,485,706, published by Evan et al., The contents are incorporated herein by reference. Pulp fibers can be any high average fiber length pulp, low average fiber length pulp, or mixtures thereof. Preferred pulp fibers include cellulosic. "The high paper size is applicable to the Chinese National Standard (CNS) A4 specification (21 × 297 mm) A7 V. Description of the invention (12) The average minus and high average fiber length pulp refers to the smaller amount Pulp of short fibers and non-fibrous particles. Usually high fiber length pulp has an average fiber length greater than i 5 mm, ideally i 5-6 mm, which is measured according to an optical fiber analyzer, such as the Kajaani tester described above. Fibers Sources typically include non-derived (virgin) fibers, which are the same as the derivatized fiber pulps that have been screened. Examples of high average fiber length pulps include bleached and non-bleached virgin softwood fiber pulps. Low average fiber length pulp " pulp) 疋 refers to pulp containing a significant amount of short fiber and non-fibrous particles. The low average fiber length, the average fiber length of the name is less than 15 mm, ideally 0.7-1.2 mm, which is measured according to an optical fiber analyzer, such as the Kajaani tester described above. Examples of low fiber length pulp include virgin hardwood pulp, which is the same as derived fiber pulp from sources such as office to waste paper ' white newspaper, and cardboard sheets. Examples of South Average Fiber Length Wood Pulp include US AUiance

Coosa Pines C〇rporatin sold under the title L〇ngiac 19, printed by Coosa Intellectual Property Bureau Employees Consumer Cooperative

River 56 'and Cosa River 57 substances. Low average fiber length pulp includes specific virgin hardwood pulp and derived (such as recycled) fiber pulp from white newspapers, recycled cardboard and office waste. The blend of high average fiber length and low average fiber length pulp may comprise an excellent low average fiber length pulp. For example, 'this mixture may contain more than 50% by weight of low average fiber length pulp and less than 50% by weight of high average fiber length pulp. An exemplary blend includes 75% by weight low average fiber length pulp and 25% by weight high average fiber length pulp. Pulp fibers can be refined or refined to various degrees. It is also possible to add the paper ruler H using the Chinese national standard (c⑽Α · 4 sizeχQ χ 297 public love 479087 A7 V. Invention. Ming (1 3) chain action agent or hydration agent to the pulp mixture. If the bond is expected to open Or non-bonded non-woven pulp fibers, debonding agent can also be added to reduce hydrogen bonding. A debonding agent as shown can be obtained from Conshock, Pennsylvania iQuak ^ Oats Chemical Co., Ltd. Sales_ Title Quaker 2000. The addition of a sufficient amount of debonding agent is 4% by weight of the composition, which can reduce the standard static and dynamic friction coefficients and improve the friction resistance of thermoplastic continuous polymerized single fibers. Debonding agent Can be used as a lubricant or friction reducer. Debonded pulp fibers are commercially available from Weyerhaeuser Corp., which is sold under the designation 4.05. Other improvements and alternative embodiments are also included in the present invention. In a garden, in one embodiment, continuous bicomponent thermoplastic single fibers are mixed with other thermoplastic single fibers other than pulp fibers. For example, continuous bicomponent thermoplastic single fibers may include a bicomponent spinning bond Blend single fiber and bicomponent meltblown single fiber. In this embodiment, the spunbond single fiber adds greater strength and the meltblown fiber is more effective for obtaining and kinking pulp fibers. In another embodiment, Continuous bicomponent monofibers can be spunbond or mixed with meltblown fibers (which do not need to be bicomponent) at lower melting temperatures. The resulting fabric can therefore be bonded by combining three or more bicomponent spinbond fibers, It is formed by lower melting meltblown single fibers and pulp fibers. When pulp fibers are introduced, the meltblown single fibers can still be heated and stacked, and can be fused with the pulp fibers to help unify their structure. The diameter of the meltblown microfibers It is usually much smaller than the spunbond fibers, and can be used as a binder or adhesive for pulp fibers. In another embodiment, the elastic polymer can be combined with the inelastic polymer in the side-by-side bicomponent single fiber. Produce fully continuous bicomponent single fibers that are easy to crepe. Fully continuous creped bicomponent single fibers can be in the form of meltblown microfibers. This paper size applies to China National Standard (CNS) A4 specifications (210 X 297 mm) (Please read the notes on the back and fill out this page first) 丨 Install I, order · ---------- Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs YHW.Pi ^^ nn ι_ης ^ η, ^ yj〇 / A7 B7 V. Description of the invention (1 4) It is relatively detailed and flexible, to help paper 1 fibers become trapped and tangled. The bicomponent single fiber of 亦可 can also be spinning Bonds single fibers to increase the elasticity of bulk 2. The continuous two-component single fiber can be used with (or not) other thermoplastic single fibers in a nonwoven fabric-to increase the bulk a to reduce the density of the fabric. Used in manufacturing Exemplary combinations of fully continuous creped bicomponent single fiber elastic and inelastic materials include the following: (but not limited to this)

Polyethylene or polypropylene) or polyethylene) polyethylene or polypropylene

Polypropylene or polyethylene / Wangyi: 1. Unless otherwise indicated, polymers are not manufactured using metal catalysts. 2. Unless otherwise indicated, polypropylene polymers are generally isotactic. In addition to the combination of elasticity and non-elasticity, other polymer combinations can be used to achieve J-crimp. Demonstration combinations called shrinkable and non-heat shrinkable polymers which reach the composition of the single fiber shrinkage when heated to the temperature below the highest melting point for the second time) are included in the following: (not limited to This) (Please read the precautions on the back before filling out this page) Packing --- ^ ---- Γί Order · τ-- Printed by the consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Heat shrinkable polymer ethylene terephthalate polyethylene or polypropylene w ~ ^ 1 Butyl terephthalate polyethylene or polypropylene

Diluted or polypropylene ----- A7 B7 V. Invention. Ming (1 5) Acetic acid co-extension When fully continuous thermoplastic bicomponent single fibers are extended side by side, other specific polymer compositions will also shrink. These combinations include the following: first polymer =--second polymer low viscosity polymer — * ===-South viscosity polymer polypropylene-r * polyethylene k propylene irregular polypropylene polyethylene Irregular polypropylene-In another advantageous embodiment, an amount of superabsorbent material is mixed with continuous two-component thermoplastic polymer single fibers and pulp fibers to improve the absorbency of this absorbent nonwoven fabric composition. "Superabsorbent, or" superabsorbent substance "refers to a type of water-swellable 'water-insoluble organic or inorganic substance under optimal conditions, in the best case' this substance is in a 0.9% by weight aqueous solution of sodium chloride It can absorb at least 20 times its weight, preferably 30 times its weight. Superabsorbent substances can be any natural, synthetic and modified natural polymers and substances. In addition, 'superabsorbent substances can be inorganic substances , Such as tannin, or organic compounds such as polymers. The term “cross-linking” refers to any intermediate bonding method that normally allows the water-soluble substance to completely become water-insoluble but swell. Such methods include physical kinks, Crystals, covalent bonds, ionic complexes and linkages, hydrophilic linkages such as hydrogen bonding, and hydrophobic linkages or van der Waals forces. Examples of synthetic superabsorptive polymers + include | hyaluronic acid and polymethacrylic acid Ammonium salt and alkali metal 'polypropionamine, polydivinyl ether, cis-n copolymer of divinyl ether and α · olefin, polyethylene_copper, polyethylene paraoxanthone' polyvinyl alcohol, and The above mixtures and copolymers. I (I read the notes on the back ^! ^ Fill this page first) A7 B7 479087 V. Description of the invention (16) The superabsorbent substance in step (1) includes natural and modified natural polymers, such as hydrolyzed: fluorene nitrile grafting Size, acrylic graft size, methyl fiber, dechitin, chitosan, hydroxycellulose, hydroxypropylcellulose, and natural gums, such as alginic acid: j xanthan gum, carrageenan, etc. Mixtures of completely natural or partially superabsorbent polymers may also be used in the invention. Other suitable absorbent colloids are disclosed in U.S. Patent No. 3,901,236 issued by Assarsson et al., August 26, 1975. The method for preparing synthetic absorbent gelled polymers is disclosed in U.S. Patent No. 4,076,633 issued by Masuda et al. On February 28 of the following year and U.S. Patent issued by Tsubakimotot et al. On August 25, 1981. No. 4, 2_86, 〇82. 7 Superabsorbent substance can also be a dry gel that will form a hydrogel when wet. However, "hydrogel" is also commonly used to indicate that the superabsorbent polymer is wet and non-absorbent. The form when wet. Superabsorbent substances can be used for any Any form, such as flake, powder, granule, fiber, continuous fiber, mesh, solution spinning single fiber and fabric. The granule can be any desired shape, such as spiral or semi-spiral, cube, rod, polyhedron, etc. Etc. Can also be knitted, sheet-like, fibers, and combinations thereof. When used, the amount of superabsorbent material in the absorbent nonwoven composition can be 5, 90% of the total weight of the absorbent nonwoven composition. Ideally In the above, the superabsorbent material occupies 10-60% by weight in the composition of the absorbent nonwoven fabric, and more preferably 20-50% by weight. The superabsorbent is usually particles with a size of 20-100 micrometers. Available on the page (Examples of granular superabsorbents include

Virgina's Hoescht Celanese's SANWET⑧ IM 3900 and SANWETd) IM-5000P, located in Doland, Midland, Michigan

Chemical Co.'s DRYTECH® 2035LD, which is based on Karukan, this paper size applies Chinese National Standard (CNS) A4 (210 χ 297 mm) Order Φ 19 YHW ^ Pkr.nn ι η ςρη A7 A7 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs

• II n ί. 丨 丨 ij Zhuangyi (please read the notes on the back to write this page) —1.11-\ ^ Τ · Ί— — — — — — ---- __B7____ 5. Description of the invention (1 7) " " NC's ^ tockh〇usen's FAV〇R⑧88〇. An example of a fiber superabsorbent is Technical from Grimsby, United Kingdom

〇ASIS @ 1〇1 of Absorbents. ^ Superabsorbents can be added using the techniques described above to combine pulp fibers with continuous bicomponent nonwoven single fibers. For example, the superabsorbent can be added to the forming motor with the pulp to make the two-component single fibers appear to be ejected onto a conveyor belt to form a nonwoven fabric, or to be ejected into the forming flow after separation from the pulp. Alternatively, a hydraulic kink method can be used to add the superabsorbent to the nonwoven fabric. After the mouth is cut, the above-mentioned air bonding technology can be used to combine the non-woven components to provide a high integrity structure. The absorbent nonwoven composition of the present invention can be used in various absorbent products', especially for personal care absorbent articles. Personal care absorbent articles include diapers, training pants, bathing suits, absorbent panties, baby wipes, adult incontinence products, and feminine hygiene products. Absorbent nonwoven composition is particularly useful in diapers, where fully continuous bi-component single fibers provide liquid distribution, softness, and durability, while pulp and (optional) superabsorbents provide high absorbency In a useful embodiment of the raw non-woven fabric, a fully continuous bicomponent single fiber is a side-by-side combination of low density or linear low density polyethylene (which provides softness) and polypropylene (which provides durability) or The core shape is combined. If a sheath-core structure is used, the polypropylene is at the center, and the low-density or linear low-density polyethylene is surrounded by the form. Absorbent nonwoven compositions can also be used in absorbent medical products, including (but not limited to) inner liners, bandages, absorbent drapes, and medical wipes containing alcohol or other germicidal substances. example

This paper size applies to China National Standard (CNS) A4 specifications (210 X 297 mm on y ^ w.Pi ^ .nn 479087 A7 B7. Printing of clothing by employees ’cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. ) Absorbent nonwoven fabric composition is prepared by mixing creped bicomponent spin-bonded single fibers, pulp, and superabsorbents. Creped bicomponent single fibers have a side-by-side structure and their average denier is 1.5. Use The method described in U.S. Patent No. 5,382,400, published by Pike et al., Is used to prepare creped bicomponent single fibers. The two sides have the following components, and the percentages are based on the weight of the total single fibers. A side B side 48.0 % Exxon 3445 polypropylene 49.0% Dow 61800 linear low-density polyethylene 1% Ti02 1% Masil SF-19 internal surfactant 1.0% Union Carbide DS4DOS copolymer is injected and quenched immediately after exposure to 24.5 KV (0.0005 Amps ) To increase its efficiency in obtaining pulp and superabsorbent substances. On the opposite sides of a single fiber, three charge grids and an array of surrounding cross grids are provided to provide the charge. Then, the two-component single The fibers are precipitated before the fabric forming conveyor belt. A mixture of pulp fibers and superabsorbent material is injected into the single fiber flow with the help of air. After depositing on the conveyor belt, the nonwoven fabric is composed of air at 264 ° F. Adhesion improves the adhesion between the components. For all constituent samples, the pulp used is CR 1654 from Coosa Pines Co. The superabsorbent material is FAVOR 880 from Stockhousen. Use the following method to calculate Saturation capacity and tension test of the prepared sample. Saturation capacity (please read the precautions on the reverse side and fill in this page): Loading # · This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) 479087 A7 5 The invention said. Ming (ϊ 9) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs, immersed a sample of 6 × 9 constituents in saline solution (0 minutes of solution. Then, the sample was absorbed in a 0.5 psi empty container 5 Min. Subtract the weight of the dry sample from the weight of the wet sample, and divide by the weight of the dry sample to calculate the capacity of each sample. MJ3 m it The tension test is the root INDA Strip Tensile test procedure IST110.1-92 (INDA Strip Tensile test procedure IST 1101, 92) comes but every; f Yongben's ninth degree is 3 ”, instead of the tension test as in IST 丨 Bu 92 procedure The parameters 値 are as follows: ♦ Lateral speed: 12 ,, per minute ♦ Load capacity: 100 N ♦ Pitch length · 3 ,, ♦ Fixed expansion speed The wet test of saturated samples is performed according to the saturated capacity test method described above (see below) ). Some samples were immersed in saline 20 and excess water was absorbed for 5 minutes at 0 5 psi. Table 1 lists the composition of the prepared samples. Example 丨 is a control sample containing only pulp and superabsorbents and no bicomponent single fiber precursor. Examples 2 and 4 used bicomponent single fiber precursors with pulp fibers but no superabsorbent. Example 2 has twice as much pulp as Example 4. Examples 3 and 5 use a two-component single-fiber precursor with paper fibers and superabsorbents. Example 5 had less pulp fibers than Example 3 but more superabsorbents. Implement 2 ”wide (please read the notes on the back first and fill in this page) Φ 0_ Composition of the two-component two-component pulp fund L · · — — Example total basis weight (gsm) 1 heavy fiber percentage of fiber. Pulp percentage ^ ====== Super-absorption Super-absorption dual-component basis weight percent fiber input (gsm) Specific to paper size Weekly National Standard (CNS) A4 (210 X 297 mm) vu \ a / di ^ nm neon 99 479087 A7 B7 V. Invention. Ming (20) (gsm) 1 550 0.0 0% 220 40 ¾ 330 60 ¾ Negative 2 150 85 51% 65 43% 0.0 0% 3 265 85 32 ¾ 100 38 ¾ 80 30% none 4 108 85 19% 23 21% 0.0 0% none 5 198 85 43¾ 23 12% 90 45% Table 2 shows the test results of each example. The tension properties of all samples of the present invention are shown in comparison with the control samples. Excellent results. The sample of the present invention also maintained a considerable saturation capacity, especially the samples using superabsorbent substances. Table 2: Example Evaluation Example Saturation Capacity (g / g) Dry Load b (g ) Dry load / basis weight (g / gsm) Dry stretch percentage Wet tension load (g) Wet load Load / basic weight (g / gsm) Wet tensile percentage 1 20.5 154 0.28 1% 0 0.0 0% 2 10.4 2157 14.38 25% 2665 17.77 21% 3 15.4 1986 7.49 22% 1706 6.44 32% 4 11.7 3059 28.32 23% 2793 25.86 25¾ 5 15.9 1989 10.05 24¾ 2458 12.41 28% (Please read the notes on the back ^^ Fill this page first) 1 Binding-Γ Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economy Although the embodiments of the present invention are well described here However, various amendments and improvements can be produced without departing from the scope of the present invention. The scope of the present invention is represented by the scope of additional patent applications, and all equivalents and meanings of changes are included here. This paper standard applies to China National Standard (CNS) A4 specification (210 X 297 mm)

Claims (1)

Composition composition 9α 12. 2 8 Patent application scope 1 · An absorbent nonwoven fabric composition comprising: ^ completely continuous bicomponent single fiber having a first thermoplastic polymer and a first thermoplastic polymer, these polymers are arranged In different regions of the cross-section of individual bicomponent single fibers; pulp fibers, which are contained in fully continuous single fibers; and it contains 5-97% by weight of pulp fibers and 3-95% by weight of completely continuous bicomponent Single fiber, and it further contains 5 to 90% by weight of superabsorbent material. 2. The composition of the absorbent nonwoven fabric according to item 1 of the patent application, wherein the first and second thermoplastic polymers are aligned side by side. The absorbent non-woven fabric as described in the first patent application, wherein the first and second thermoplastic polymers are arranged in the form of a sheath core. The absorbent non-woven fabric according to item 1 of the patent application scope, wherein the first polymer comprises a longer-lasting polymer selected from the group consisting of a copolymer containing a polypropylene homogeneous polymer and 10% by weight of an olefin co-monomer. Composition, high-density polyethylene, α-olefin copolymer with a content of 10% by weight of a linear low-start, low-degree polyethylene, polyamide, polyester, polycarbonate, polytetrafluoroethylene, and a combination of the above In the group. 5. The absorptive nonwoven fabric composition according to item 1 of the scope of the patent application of the patent, wherein the second polymer comprises a softer polymer selected from the group consisting of branched low-density polyethylene with an α-olefin comonomer content of 10% by weight of linear low-density polyethylene, an ethylene copolymer having less polyester and one ethylene comonomer, a copolymer having unsaturated fatty acids and g-derivatives thereof, and any other carbon number of 20 The content of two 〇 (-olefin copolymers, each of which is a co-monomer, is 10% by weight of the copolymer, and the group formed by the composition. The paper size applies to Chinese National Standard (CNS) A4 Specifications (210 X 297 mm) 1, Packing ------- fh Order --------- (Please read the precautions on the back before filling this page) Intellectual Property Bureau Staff Consumer Cooperatives Printed clothing 4 / VU8 / A8 B8 C8 D8 6. Scope of patent application, 6. The absorbent non-woven fabric described in item 1 of Shenyang Patent Fanyuan, where the second polymer contains a polymer different from the first polymer Wettable polymer: selected from the group consisting of polyamines, polyvinyl acetate, saponified polyethylene vinegar , Saponified vinyl ethylene acetic acid, other hydrophilic polymers, and groups composed thereof. 7. The composition of an absorbent nonwoven fabric as described in item 1 of the patent application scope, wherein the first thermoplastic polymer The fabric provides durability and the second thermoplastic polymer provides softness. '8-The absorbent nonwoven fabric composition as described in item 1 of the patent application scope, wherein the first thermoplastic polymer provides wettability and the second thermoplastic polymer ≫ 9-The absorbent nonwoven fabric composition as described in item 1 of the patent application scope, wherein the first thermoplastic polymer provides durability and the second thermoplastic polymer provides wettability. ≫ ι〇 • Absorbent nonwoven fabric as described in item 1 of the patent application, consisting of a fully continuous bicomponent single fiber comprising creped monofibers. Π • Absorbent nonwoven fabric as described in item 10 of the patent application range Composition, wherein the first thermoplastic polymer includes a more elastic polymer and the second thermoplastic polymer includes a less elastic polymer. The absorbent nonwoven fabric composition according to item ιo, wherein the first thermoplastic polymer comprises a relatively heat-shrinkable polymer and the second thermoplastic polymer comprises a relatively non-heat-shrinkable polymer 1 3 · The composition of an absorbent nonwoven fabric as described in item i of the patent application range, wherein the pulp contains a low average fiber length of an average fiber length of 1.5 mm — — — — — — Aw · · I 1 t 1 II ^ 0 III (Please read the precautions on the back before filling out this page.) 1. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 4/9087 09888 ABCD Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. Η. The composition of the absorptive nonwoven knit according to item i of the scope of the patent application, wherein the pulp comprises an average fiber long-yield, long-length pulp. Gao Pingmei with reduced dimension length H6. 15. The absorbent nonwoven fabric 4 'as described in the first item of the patent scope, wherein the pulp comprises a mixture of low average fiber length pulp and high average fiber length paper. 16. The absorptive non-woven fabric composition as described in the scope of the patent application, which contains 35-95% by weight of pulp fibers and 5-65% by weight of fully continuous bicomponent single fibers. 17. The composition of an absorbent nonwoven fabric as described in item 丨 of the patent application scope, which comprises 50-95% by weight of pulp fibers and 5-50% by weight of fully continuous bicomponent single fibers. 18. The composition of an absorbent nonwoven fabric according to item 1 of the scope of the patent application, which further comprises 10 to 60% by weight of a superabsorbent substance. 19. The composition of the absorbent nonwoven fabric according to item 1 of the scope of the patent application, further comprising 20-50% by weight of a superabsorbent substance. 2〇 · —a non-woven fabric and article of pulp and bicomponent continuous single fiber, comprising: a completely continuous bicomponent single fiber having a propylene polymer and an ethylene polymer, these polymers are arranged in individual bicomponent In different regions of the cross section of the single fibers; pulp fibers, which are contained in completely continuous single fibers. 2 1 The composition of the absorbent nonwoven fabric according to item 22 of the scope of the patent application, wherein the pulp fibers include cellulosic fibers. This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm) I — J 11 · — I f I — k — Order · — — — — — (Please read the precautions on the back before filling in this (Page) 479087 6. Application scope 22 · The composition of the absorbent nonwoven fabric as described in item 22 of the scope of application, wherein the propylene polymer comprises a polypropylene homogeneous polymer or copolymer having 10% by weight of ethylene. 2 3 · The composition of an absorbent nonwoven fabric as described in item 22 of the patent application, wherein the ethylene polymer comprises low density polyethylene. 24. The composition of the absorbent nonwoven fabric according to item 22 of the patent application park, further comprising a superabsorbent. 25. An personal care absorbent article comprising: an absorbent nonwoven fabric containing 5-90% by weight of pulp fibers, 0-90% by weight superabsorbent, and having a first thermoplastic polymer "々η" And the first thermoplastic polymer "B", 3-95% by weight of a completely continuous bicomponent monofibrous thermoplastic polymer "A" is attached to a non-woven fabric having a first desirable property, a plastic polymer "B" is attached to a non-woven fabric Has second ideality 26. The absorbent article according to item 27 of the patent application, which includes a diaper. 27. The absorbent article according to item 27 of the patent application, which includes training pants. 〃 28. As The absorbent article according to item 27 of the patent application, which includes absorbent underpants. 29. The absorbent article according to item 27 of the patent application, which includes adult incontinence articles. 30. The absorbent article described in item 27, the paper size of the package is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 gf printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economy 479087 A8 B8 C8 ---- —D8 ____ VI. The scope of patent application includes feminine hygiene articles. 3 1 • The absorbent article according to item 27 of the patent application park, which includes a bathing suit. 32. The absorbent article according to item 27 of the patent application scope. , Which includes a baby wipe. 3 3 · The absorbent article according to item 27 of the scope of patent application, wherein the first thermoplastic polymer "A" and the second thermoplastic polymer "B" are arranged in a juxtaposed form. 34. The absorbent article according to item 27 of the scope of patent application, wherein the first thermoplastic polymer "A" and the second thermoplastic polymer "B" are arranged in the form of a sheath core. 35. An absorbent article, wherein the first thermoplastic polymer "A" includes a propylene polymer and the second thermoplastic polymer "B" includes an ethylene polymer. 3 6. The absorbent article according to item 27 of the scope of patent application, wherein propylene The polymer has a polypropylene homogeneous polymer or copolymer of 10% by weight. 0 3 7. The absorbent article according to item 27 of the patent application scope, wherein the ethylene polymer comprises a low density polyethylene. 3 8. The absorbent article according to item 27 of the scope of patent application, wherein the first ideal property includes durability and the second ideal property includes softness. This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) — — — — — JIIIT — — Avi · II i II v ^ i I »— — — — — — 1— (Please read the notes on the back before filling out this page}