CN117306064B - Preparation process of disposable underpants with high elasticity and product thereof - Google Patents

Preparation process of disposable underpants with high elasticity and product thereof Download PDF

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Publication number
CN117306064B
CN117306064B CN202311060657.2A CN202311060657A CN117306064B CN 117306064 B CN117306064 B CN 117306064B CN 202311060657 A CN202311060657 A CN 202311060657A CN 117306064 B CN117306064 B CN 117306064B
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parts
disposable underpants
preparing
plant fiber
elasticity
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CN117306064A (en
Inventor
黄福开
王宇亭
王艳枝
牛晓晨
吕嘉慧
吴华香
肖鸿辉
张腰兰
金华
林宋妹
畅蓓蕾
袁奇宇
谌贻仁
景毅
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Guangdong Qiyue Future Technology Co ltd
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Guangdong Qiyue Future Technology Co ltd
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41B—SHIRTS; UNDERWEAR; BABY LINEN; HANDKERCHIEFS
    • A41B17/00—Selection of special materials for underwear
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41B—SHIRTS; UNDERWEAR; BABY LINEN; HANDKERCHIEFS
    • A41B9/00—Undergarments
    • A41B9/001—Underpants or briefs
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D01F1/103—Agents inhibiting growth of microorganisms
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/18—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from other substances
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
    • D03D13/008—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft characterised by weave density or surface weight
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/47—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads multicomponent, e.g. blended yarns or threads
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/56—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads elastic
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/327—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof
    • D06M15/333—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof of vinyl acetate; Polyvinylalcohol
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41B—SHIRTS; UNDERWEAR; BABY LINEN; HANDKERCHIEFS
    • A41B2400/00—Functions or special features of shirts, underwear, baby linen or handkerchiefs not provided for in other groups of this subclass
    • A41B2400/22—Breathability, i.e. being vapour permeable and waterproof
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41B—SHIRTS; UNDERWEAR; BABY LINEN; HANDKERCHIEFS
    • A41B2400/00—Functions or special features of shirts, underwear, baby linen or handkerchiefs not provided for in other groups of this subclass
    • A41B2400/34—Functions or special features of shirts, underwear, baby linen or handkerchiefs not provided for in other groups of this subclass antimicrobial or antibacterial
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41B—SHIRTS; UNDERWEAR; BABY LINEN; HANDKERCHIEFS
    • A41B2400/00—Functions or special features of shirts, underwear, baby linen or handkerchiefs not provided for in other groups of this subclass
    • A41B2400/52—Functions or special features of shirts, underwear, baby linen or handkerchiefs not provided for in other groups of this subclass disposable
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41B—SHIRTS; UNDERWEAR; BABY LINEN; HANDKERCHIEFS
    • A41B2400/00—Functions or special features of shirts, underwear, baby linen or handkerchiefs not provided for in other groups of this subclass
    • A41B2400/60—Moisture handling or wicking function
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41B—SHIRTS; UNDERWEAR; BABY LINEN; HANDKERCHIEFS
    • A41B2500/00—Materials for shirts, underwear, baby linen or handkerchiefs not provided for in other groups of this subclass
    • A41B2500/20—Woven
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/02—Natural fibres, other than mineral fibres
    • D06M2101/04—Vegetal fibres
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/20—Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/32—Polyesters
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/50—Modified hand or grip properties; Softening compositions
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
    • D10B2321/022—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polypropylene
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics
    • D10B2401/061—Load-responsive characteristics elastic
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics
    • D10B2401/062—Load-responsive characteristics stiff, shape retention
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/13—Physical properties anti-allergenic or anti-bacterial

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

The application relates to the technical field of disposable underpants, in particular to a preparation process of disposable underpants with strong elasticity and a product thereof, comprising the following preparation steps: s1, twisting DTY filaments and polypropylene filaments into strands, soaking the strands in a polyvinyl alcohol solution with the mass fraction of 20-35%, soaking for 24-28 hours, taking out, and drying to obtain soft strands; s2, weaving soft strands into grey cloth, wherein the warp and weft density of the grey cloth is (50-70) (40-60) pieces/Kg, the warp shrinkage is 1-2%, and the weft shrinkage is 9-12%; s3, performing primary shaping, soaping, washing and secondary shaping on the grey cloth to obtain elastic fabric; s4, preparing the elastic fabric into disposable underpants with strong elasticity. The disposable underpants have the advantages of increased transverse elasticity, good softness, good air permeability and hygroscopicity, suitability for people with different weights, high applicability and good comfort.

Description

Preparation process of disposable underpants with high elasticity and product thereof
Technical Field
The application relates to the technical field of disposable underpants, in particular to a preparation process of disposable underpants with strong elasticity and a product thereof.
Background
Disposable underpants are a convenient and sanitary choice, and are particularly suitable for traveling, sport or special situations. Most disposable pants today are mainly made of nonwoven fabrics. The non-woven fabric is convenient for the production of merchants, is low in price and is popular among people, but the disposable underpants prepared from the non-woven fabric are poor in wearing comfort, and the reason is that: the elasticity of non-woven fabrics is poor, and when preparing into pants, the model is fixed, and is unadjustable, and pants of same model, some people dresses probably more tightly, and some can be more loose again for the disposable pants of non-woven fabrics is poor with human buttock laminating degree, uses and experiences the sense poor, is unfavorable for people's use.
Disclosure of Invention
In order to solve the problem of poor experience in use caused by poor elasticity of the disposable underpants, the application provides a preparation process of the disposable underpants with strong elasticity and a product thereof.
In a first aspect, the present application provides a process for preparing disposable underpants with high elasticity, which adopts the following technical scheme: a process for preparing disposable underpants with high elasticity, which comprises the following preparation steps:
S1, twisting DTY filaments and polypropylene filaments into strands, soaking the strands in a polyvinyl alcohol solution with the mass fraction of 20-35%, soaking for 24-28 hours, taking out, and drying to obtain soft strands;
S2, weaving soft strands into grey cloth, wherein the warp and weft density of the grey cloth is (50-70) (40-60) pieces/Kg, the warp shrinkage is 1-2%, and the weft shrinkage is 9-12%;
S3, performing primary shaping, soaping, washing and secondary shaping on the grey cloth to obtain elastic fabric;
s4, preparing the elastic fabric into disposable underpants with strong elasticity.
Through adopting above-mentioned technical scheme for the horizontal elasticity increase of disposable pants, easily resumes to the original state, not fragile is suitable for the crowd of different weight, does not tight the human body of reining in, and softness is good, the gas permeability is strong and thickness is thin, uses and experiences to feel well.
The application forms the folded yarn by mixing and twisting the DTY filaments and the polypropylene fibers, so as to improve the elasticity, the air permeability and the strength of the folded yarn and have the advantages of the DTY filaments and the polypropylene fibers. The folded yarn is used for preparing the fabric of the disposable underpants, improves the transverse elasticity and elasticity of the fabric, can transversely extend, enlarges the volume of the disposable underpants, and improves the air permeability, the moisture permeability and the softness of the fabric, which are not affected in the expanding process, so that the comfort of the fabric in use is improved.
The folded yarn is soaked in the polyvinyl alcohol solution to improve the softness of the folded yarn, so that the folded yarn has good elasticity and softness at the same time, and is beneficial to processing. The folded yarn is obtained by twisting DTY filaments and polypropylene filaments, the difference of the texture and the softness of the DTY filaments and the polypropylene filaments is large, the texture and the softness of the folded yarn with poor softness and texture can be obviously felt when the folded yarn is used, and the softness and the texture of the folded yarn are improved by soaking the folded yarn in a polyvinyl alcohol solution.
The folded yarns are woven to form grey cloth, the warp and weft density of the grey cloth is (50-70)/(40-60) roots/Kg, the warp shrinkage is 1-2%, and the weft shrinkage is 9-12%, so that the transverse elasticity of the fabric is improved, the disposable underpants are prepared, and the disposable underpants can be stretched and have softness at the same time, and can adapt to people of different sizes. When the novel belt is worn, the phenomenon of tightening or loosening is avoided.
Preferably, the DTY filaments are prepared by the following method:
1) Continuously grinding plant fibers, calcium carbonate, a silane coupling agent, grape seed oil, alkyl sulfonate and organic antibacterial master batch until the average particle size of the plant fibers is 200-400nm, and then adding polyethylene terephthalate for common grinding to obtain a mixture;
2) And (3) carrying out melt extrusion on the obtained mixture, and cooling, drying, oiling, winding, stretching, twisting and deforming to obtain the DTY filament.
By adopting the technical scheme, the hygroscopicity and the air permeability of the DTY filament are improved. The traditional DTY filament mainly takes polyester fiber as raw material, has good elasticity, but has poor hygroscopicity and air permeability, and is used for preparing disposable underpants, which is impermeable to moisture and air. Therefore, the DTY filament prepared by the method solves the problem of poor air permeability and moisture permeability of the traditional DTY filament.
Wherein, by adding a large amount of plant fibers, the air permeability and the moisture permeability of the DTY filament are greatly improved. The amount of plant fiber added in the present application is at least half that of polyethylene terephthalate so that the strength of the DTY filament is not as strong as that of the conventional DTY filament, but is completely sufficient for the production of disposable pants. According to the application, by adding a certain amount of plant fibers, the strength and elasticity of the DTY filaments are ensured, the air permeability and the moisture permeability of the DTY filaments are improved, and the wearing comfort of the disposable underpants is improved.
The compatibility of the plant fiber and the polyethylene terephthalate is poor, the dosage of the plant fiber is large, and once the plant fiber is unevenly mixed, the elasticity of the DTY filament is reduced, and the DTY filament is easy to break. In the application, plant fibers, calcium carbonate, a silane coupling agent, grape seed oil, alkyl sulfonate and organic antibacterial master batch are firstly ground, so that the dispersibility of the plant fibers is improved, the compatibility with polyethylene terephthalate is also improved, and further the DTY filament has uniform structure and good elasticity.
Wherein, calcium carbonate and alkyl sulfonate are used for improving the dispersibility of plant fibers, grape seed oil and silane coupling agent are used for adjusting the elasticity of DTY filaments in a synergic way, and the elasticity of the DTY filaments is prevented from being reduced after the plant fibers are added.
Preferably, the DTY filaments are prepared from the following raw materials in parts by weight:
40-50 parts of polyethylene terephthalate
20-25 Parts of plant fiber
5-9 Parts of calcium carbonate
1-2 Parts of silane coupling agent
10-16 Parts of grape seed oil
Alkyl sulfonate 2-6 parts
1-2 Parts of organic antibacterial master batch.
By adopting the technical scheme, the dosage of the raw materials for preparing the DTY filaments is optimized, so that the air permeability and the moisture permeability of the DTY filaments are better, and meanwhile, the elastic influence on the DTY filaments is reduced.
Preferably, the plant fiber is a modified plant fiber, and the modified plant fiber is prepared by the following method:
preparing a mixed solution: dissolving phthalate in ethanol to obtain a mixed solution;
Preparing nano plant fibers: grinding plant fibers to an average particle size of 200-400nm, adding the plant fibers into (3-isocyanatopropyl) trimethoxysilane and ethanol, heating to 50-60 ℃, stirring for 1-2h, cooling to 20-30 ℃, adding the mixed solution, stirring for 1-2h to obtain a nano suspension, and heating to recover ethanol to obtain nano plant fibers;
preparing modified plant fibers: and uniformly mixing the nano plant fiber and liquid paraffin to obtain the modified plant fiber.
By adopting the technical scheme, the compatibility of the plant fiber and the ethylene glycol phthalate is improved, and meanwhile, the elasticity of the prepared DTY filament is better after the modified plant fiber is added. The elasticity of the plant fiber is far smaller than that of the ethylene glycol phthalate, and the plant fiber is shared with the ethylene glycol phthalate, so that the elasticity of the ethylene glycol phthalate is reduced. In the application, the (3-isocyanatopropyl) trimethoxy silane and ethanol are heated and stirred, so that the (3-isocyanatopropyl) trimethoxy silane is connected to the surface of the plant fiber, the surface property of the plant fiber is changed, the plant fiber can absorb more methyl phthalate, the plant fiber can be uniformly compatible with ethylene glycol phthalate, and the elasticity of the DTY filament can be improved in the processing process.
In addition, as the phthalate is easy to volatilize in the processing process, the plant fiber can fully absorb and store the phthalate by adopting a soaking means, and meanwhile, the surface of the nano plant fiber is wrapped with paraffin by adopting liquid paraffin, so that the phthalate is prevented from overflowing, and the protection effect is achieved; on the other hand, the paraffin also can improve the dispersibility and the flow of the nano plant fiber, so that the plant fiber and the ethylene glycol phthalate can be quickly and uniformly mixed, and the elasticity, air permeability and moisture permeability of the stranded wire are improved.
Preferably, the modified fiber is prepared from the following raw materials in parts by weight:
20-30 parts of plant fiber
5-9 Parts of (3-isocyanatopropyl) trimethoxysilane
Phthalate 1-2 parts
40-50 Parts of ethanol
5-10 Parts of liquid paraffin;
wherein, the weight part of ethanol used for dissolving phthalate is 10-15 parts, and the rest is used for dissolving (3-isocyanatopropyl) trimethoxysilane.
By adopting the technical scheme, the dosage of the raw materials for preparing the modified plant fiber is optimized, so that the modified plant fiber has good compatibility, and can be uniformly mixed with ethylene glycol phthalate to prepare the DTY filament with stable structure; and when the modified plant fiber is used together with the ethylene glycol phthalate, the elasticity of the DTY filament is not reduced due to the fact that a large amount of plant fiber is used.
Preferably, the first shaping is heat shaping, the temperature of a hot water stage in the heat shaping is 100 ℃, the heating time is 130-150min, the temperature of saturated steam is 120-140 ℃, the time is 20-30min, the drying stage adopts hot air drying, the drying temperature is 210-220 ℃, the time is 15-30min, and the cooling temperature is 20-30 ℃.
By adopting the technical scheme, the form of the grey cloth is improved, so that the lateral elasticity of the grey cloth is more stable and better, the grey cloth can be prevented from deforming, excessive wrinkles are generated, the grey cloth is not easy to curl, and the hand feeling of the grey cloth is improved.
Preferably, the soaping process is as follows:
Water and ethanol are mixed according to the weight ratio of (4-6): (2-4) mixing to obtain a cleaning solution, heating to 40-45 ℃, placing the grey cloth in the cleaning solution for cleaning, adding ferment water, and cleaning again, wherein the weight ratio of the ferment water to the water is 1: (4-5).
By adopting the technical scheme, the hand feeling of the disposable underpants is improved, the smoothness of the disposable underpants is improved, and the use comfort of the disposable underpants is improved.
Preferably, the second shaping process is as follows:
Soaking the washed grey cloth in a sizing agent solution for 1-2h, taking out, washing with water, and drying at 90-100deg.C;
Wherein the shaping solvent is composed of dodecyl dimethyl betaine, dimethyl silicone oil, fatty alcohol polyoxyethylene ether and water according to the weight ratio of (1-2): (5-10): (3-9): 100 is mixed and prepared.
By adopting the technical scheme, the softness of the grey cloth is further improved, and meanwhile, the elasticity of the grey cloth is improved, so that the disposable underpants are prevented from tightening a human body in the use process.
Preferably, the diameter ratio of the DTY filaments to the polypropylene filaments is (2-5): 1.
By adopting the technical scheme, the elasticity of the stranded wires is improved, and the air permeability and the moisture permeability of the braided fabric in home country are ensured.
In a second aspect, the application provides a disposable underpants with good elasticity, which adopts the following technical scheme:
a disposable pants with good elasticity, which is prepared by the preparation process of the disposable pants with good elasticity in the first aspect.
By adopting the technical scheme, the disposable underpants with good elasticity, strong softness and air and moisture permeability are obtained, and the disposable underpants can be suitable for people with different weights due to good elasticity, and are more fit for the needs of human bodies. Secondly, the fabric has good softness and air and moisture permeability, and can improve wearing comfort.
In summary, the application has the following beneficial effects:
1. According to the application, the DTY filaments and the polypropylene fibers are mixed to prepare the folded yarn, and the folded yarn is soaked in the polyvinyl alcohol solution, so that the folded yarn has the advantages of the DTY filaments and the polypropylene fibers, has good elasticity and air permeability, can improve the elasticity and softness of the disposable underpants, and can adapt to people with different weights. Secondly, the application changes the folded yarn into the grey cloth with the warp and weft density of (50-70)/(40-60) root/Kg, the warp shrinkage of 1-2% and the weft shrinkage of 9-12%, so that the disposable underpants have better elasticity and better air permeability and moisture permeability.
2. According to the application, the DTY filament is prepared by jointly using polyethylene terephthalate, plant fiber, calcium carbonate, silane coupling agent, grape seed oil, alkyl sulfonate and organic antibacterial master batch, so that the problems of poor moisture permeability and air permeability of the polyethylene terephthalate can be effectively solved, and the wearing comfort of the disposable underpants can be further improved.
3. According to the application, the plant fiber, (3-isocyanatopropyl) trimethoxy silane, phthalic acid ester, ethanol and liquid paraffin are used for preparing the modified plant fiber, so that the problem of compatibility of the plant fiber and polyethylene terephthalate is solved, and the problem of strand elasticity reduction caused by adding a large amount of plant fiber is solved.
Detailed Description
Examples
Example 1
A preparation process of disposable underpants with strong elasticity comprises the following preparation steps:
S1, twisting DTY filaments and polypropylene filaments into strands, soaking the strands in a polyvinyl alcohol solution with the mass fraction of 20%, soaking for 24 hours, taking out, and drying to obtain soft strands;
s2, weaving soft strands into grey cloth, wherein the warp and weft densities of the grey cloth are 50 x 40 pieces/Kg, the warp shrinkage is 2%, and the weft shrinkage is 12%;
S3, performing primary shaping, soaping, washing and secondary shaping on the grey cloth to obtain elastic fabric;
s4, preparing the elastic fabric into disposable underpants with strong elasticity.
The DTY filaments had a tenacity at break of 4.2cN/dtex, an elongation at break of 30% and a denier rating of 167dtex/96f.
The breaking strength of the polypropylene fiber is 3.8cN/dtex, the breaking elongation is 40 percent, and the fineness specification is 180dtex/80f.
The diameter ratio of DTY filaments to polypropylene filaments was 2:1.
The first shaping is heat shaping, the temperature of the preheating stage in the heat shaping is 100 ℃, the heating time is 130min, the temperature of saturated steam is 120 ℃, the time is 20min, the drying stage adopts hot air drying, the drying temperature is 210 ℃, the time is 15min, and the cooling temperature is 20 ℃.
The soaping process is as follows: water and ethanol are mixed according to the weight ratio of 4:2, mixing to obtain a cleaning solution, heating to 40 ℃, placing the grey cloth in the cleaning solution, cleaning, adding ferment water, and cleaning again, wherein the weight ratio of the ferment water to the water is 1:4.
The main component of the ferment water is neutral cellulase, and the pH value is 4.5.
Setting for the second time, soaking the washed grey fabric in a setting agent solution for 1h, taking out, washing with water, and drying at 90 ℃;
Wherein the shaping solvent is composed of dodecyl dimethyl betaine, dimethyl silicone oil (viscosity is 1200mpa.s,25 ℃), fatty alcohol polyoxyethylene ether and water according to the weight ratio of 1:5:3:100 is mixed and prepared.
Examples 2-3 differ from example 1 in the parameters of some of the experimental steps, examples 1-3 differ, see in particular table 1:
Table 1 examples 1-3 experimental procedure parameters
Example 4
A process for preparing disposable underpants with high elasticity, which is different from the process of the embodiment 1, is characterized in that DTY filaments are prepared by the following method:
1) Grinding 400.00g of polyethylene terephthalate, 200.00g of plant fiber (plant fiber extracted from mulberry bark), 50.00g of calcium carbonate, 10.00g of silane coupling agent (KH-2121), 100.00g of grape seed oil, 20.00g of alkyl sulfonate (sodium dodecyl sulfonate) and 10.00g of organic antibacterial master batch continuously to obtain a mixture;
2) And (3) carrying out melt extrusion on the obtained mixture, and cooling, drying, oiling, winding, stretching, twisting and deforming to obtain the DTY filament.
The molecular weight of the polyethylene terephthalate was 20000 and the impact strength was 64.3J/m.
Examples 5-6 differ from example 4 in the type and amount of the partial raw materials used to prepare the DTY filaments as compared to example 4, and the specific differences of examples 4-6 are shown in table 2:
TABLE 2 types and amounts of raw materials for preparing DTY filaments in examples 4 to 6
Example 7
The preparation process of the disposable underpants with strong elasticity is characterized in that the vegetable fiber is modified vegetable fiber, and the preparation process comprises the following steps:
Preparing a mixed solution: 10.00g of phthalate (dioctyl phthalate) was dissolved in 100.00g of ethanol to obtain a mixed solution;
Preparing nano plant fibers: grinding 200.00g of plant fiber (plant fiber extracted from mulberry bark) to an average particle size of 200nm, adding into 50.0g of (3-isocyanatopropyl) trimethoxysilane and 300.00g of ethanol, heating to 50 ℃, stirring for 1h, cooling to 20 ℃, adding the mixed solution, stirring for 1h to obtain a nano suspension, and heating to recover ethanol to obtain nano plant fiber;
Preparing modified plant fibers: uniformly mixing the nano plant fiber with 50.00g of liquid paraffin to obtain the modified plant fiber.
Examples 8 to 9 differ from example 7 in the kind and amount of the partial raw materials for preparing the modified plant fiber, and the specific differences of examples 7 to 9 are shown in Table 3:
TABLE 3 kinds and amounts of raw materials for preparing modified plant fibers in examples 7 to 9
Example 10
A process for preparing disposable underpants with high elasticity, which is different from example 7 in that the same amount of vinyl triisopropoxy silane is used instead of (3-isocyanatopropyl) trimethoxysilane, and the rest of experimental steps are the same as those of example 7.
Example 11
The process for preparing disposable underpants with high elasticity is different from the process of the embodiment 7 in that the steps for preparing the nano plant fiber are as follows: grinding plant fibers to an average particle size of 200nm, adding the plant fibers into (3-isocyanatopropyl) trimethoxy silane, phthalate and ethanol, heating to 50 ℃, stirring for 1h, cooling to 20 ℃, adding the mixed solution, stirring for h to obtain a nano suspension, and heating to recover ethanol to obtain the nano plant fibers.
Comparative example
Comparative example 1
A process for preparing disposable underpants was different from example 1 in that cotton threads were used instead of polypropylene fibers, and the rest of the experimental procedures were the same as in example 1.
The breaking strength of the cotton thread is 3.8cN/dtex, the breaking elongation is 40 percent, and the fineness specification is 180dtex/80f.
Comparative example 2
A process for preparing disposable underpants was different from example 1 in that nylon yarn was used instead of DTY filament yarn, and the rest of the experimental procedures were the same as in example 1.
The breaking strength of the nylon yarn is 4.2cN/dtex, the breaking elongation is 30%, and the fineness specification is 167dtex/96f.
Comparative example 3
A process for preparing disposable underpants, the comparative example is different from example 1 in that an equivalent amount of water is used instead of polyvinyl alcohol solution, and the rest of experimental procedures are the same as in example 1.
Comparative example 4
The preparation process of disposable underpants is different from example 1 in that the warp-weft density of the grey cloth is 80 x 40 pieces/Kg, and the rest experimental steps are the same as those of example 1.
The disposable pants prepared in examples 1 to 11 and comparative examples 1 to 4 were each of the type S.
Performance test
The disposable pants having strong elasticity prepared in examples 1 to 11 and the disposable pants prepared in comparative examples 1 to 4 were subjected to an elasticity test, a hygroscopicity test and a softness test.
Detection method/test method elasticity test: preparing a humanoid platform, wherein the model of the humanoid platform is L, wrapping the part of the humanoid platform contacted with the underpants with pigskin, sleeving the disposable underpants with strong elasticity and the disposable underpants with comparative examples 1-4 on the humanoid platform in the examples 1-11, standing for 24h, taking down the disposable underpants, and observing the trace on the pigskin. No trace was rated a, a slight trace was tolerated as rated B, and a significant trace was rated C.
Hygroscopicity: the moisture absorption performance was measured by GB/T21655.1-2008, 10 replicates each, and the average was taken after removing one of the highest and one of the lowest values.
Softness test: detecting by using an M508 swing type fabric softness tester, and respectively cutting 2.54cm samples and 10 longitudinal and transverse samples of the disposable underpants with strong elasticity prepared in examples 1-11 and the underpants prepared in comparative examples 1-4; adjusting the instrument level to enable the pendulum pointer to point to a zero position, wherein the distance between the sample clamp and a slice-cutting shaft at the upper end of the pendulum is 1.27cm (the upper end of the sample clamp is level with scales on a sample rod); clamping the length of 0.64cm at the upper end of a sample in a sample clamp, overlapping the length of 0.64cm at the lower end with a housing slice at the upper end of a pendulum bob, adjusting the pointer load to 20g, clamping a weight in a 5cm weight groove at the lower part of the pendulum bob pointer, and selecting the pendulum bob pointer load and the weight groove to enable the bending rigidity force to be in the center of a lower engraving disc as far as possible; starting a switch, and respectively separating dial reading Rg pointed by a pendulum pointer when the sample is separated from the house slice; the remaining 9 samples were also tested in the same manner using the arithmetic average of Rg measured on the left and right sides of one sample as the readings of the sample, and finally calculated with the formula s=rg (w×a) 0.28×9.8×10-6, S-stiffness (N), the arithmetic average of Rg-10 readings in the longitudinal or transverse directions, W-weight (g) of the weight of each stage, and a-distance of the load weight hole from the fulcrum (3.937 inches). The test experimental data are shown in table 4:
TABLE 4 Experimental data for examples 1-11 and comparative examples 1-4
As can be seen from examples 1-11 and comparative examples 1-4 in combination with Table 4, the disposable pants produced by the process of the present application have good elasticity, breathability and hygroscopicity and softness, and are more suitable for different people.
Example 1 and comparative examples 1-2 illustrate that the disposable underpants prepared by using DTY filaments and polypropylene filaments together have the characteristics of good elasticity, good air and moisture permeability and good softness. The comparative example 1 has good hygroscopicity and softness, but has poor elasticity, and is not suitable for people of various body types, and the comparative example 2 has good hygroscopicity, but has unsatisfactory elasticity and softness effects, and affects comfort in use.
Compared with comparative example 3, the softness of the disposable underpants is remarkably improved and the comfort of use is further improved after being soaked in the polyvinyl alcohol solution.
Example 1 and comparative example 4 show that the elasticity, breathability, hygroscopicity and softness of disposable pants can be improved by reasonably knitting the warp and weft densities of the fabric.
Example 1 compared to example 4 demonstrates that the moisture permeability and softness of DTY filaments prepared by the present application are significantly improved.
Example 4 and example 7 illustrate that the use of the modified plant fiber of the present application can improve not only the moisture permeability and softness of the disposable pants, but also the elasticity of the disposable pants and the wearing comfort of the disposable pants.
Example 7 in comparison with examples 10-11, it is demonstrated that the modified plant fiber prepared by the formulation and preparation method of the present application can be used to prepare disposable underpants to significantly improve the elasticity, breathability, hygroscopicity and softness of the disposable underpants.
The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.

Claims (6)

1. The preparation process of the disposable underpants with strong elasticity is characterized by comprising the following preparation steps:
S1, twisting DTY filaments and polypropylene filaments into strands, soaking the strands in a polyvinyl alcohol solution with the mass fraction of 20-35%, soaking for 24-28 hours, taking out, and drying to obtain soft strands;
s2, weaving soft strands into grey cloth, wherein the warp shrinkage is 1-2% and the weft shrinkage is 9-12%;
S3, performing primary shaping, soaping, washing and secondary shaping on the grey cloth to obtain elastic fabric;
s4, preparing the elastic fabric into disposable underpants with strong elasticity;
The DTY filament is prepared from the following raw materials in parts by weight:
40-50 parts of polyethylene terephthalate
20-25 Parts of modified plant fiber
5-9 Parts of calcium carbonate
1-2 Parts of silane coupling agent
10-16 Parts of grape seed oil
Alkyl sulfonate 2-6 parts
1-2 Parts of organic antibacterial master batch;
The modified plant fiber is prepared by the following method:
preparing a mixed solution: dissolving phthalate in ethanol to obtain a mixed solution;
Preparing nano plant fibers: grinding plant fibers to an average particle size of 200-400nm, adding the plant fibers into (3-isocyanatopropyl) trimethoxysilane and ethanol, heating to 50-60 ℃, stirring for 1-2h, cooling to 20-30 ℃, adding the mixed solution, stirring for 1-2h to obtain a nano suspension, and heating to recover ethanol to obtain nano plant fibers;
preparing modified plant fibers: uniformly mixing the nano plant fiber and liquid paraffin to obtain modified plant fiber;
Wherein, the raw materials in parts by weight for preparing the modified plant fiber are as follows:
20-30 parts of plant fiber
5-9 Parts of (3-isocyanatopropyl) trimethoxysilane
Phthalate 1-2 parts
40-50 Parts of ethanol
5-10 Parts of liquid paraffin;
Wherein, the weight part of ethanol used for dissolving phthalate is 10-15 parts, and the rest is used for dissolving (3-isocyanatopropyl) trimethoxysilane;
The DTY filament is prepared by the following method:
1) Continuously grinding the modified plant fiber, calcium carbonate, a silane coupling agent, grape seed oil, alkyl sulfonate and organic antibacterial master batch until the average particle size of the modified plant fiber is 200-400nm, and then adding polyethylene terephthalate for common grinding to obtain a mixture;
2) And (3) carrying out melt extrusion on the obtained mixture, and cooling, drying, oiling, winding, stretching, twisting and deforming to obtain the DTY filament.
2. The process for preparing disposable underpants with strong elasticity according to claim 1, wherein the first shaping is heat shaping, the preheating stage in the heat shaping has a temperature of 100 ℃, a heating time of 130-150min, a saturated steam temperature of 120-140 ℃, a saturated steam temperature of 20-30min, a drying stage adopts hot air drying, a drying temperature of 210-220 ℃, a drying time of 15-30min, and a cooling temperature of 20-30 ℃.
3. The process for preparing a strong elastic disposable underpants according to claim 1, wherein the soaping process is as follows:
water and ethanol are mixed according to the weight ratio of (4-6): (2-4) mixing to obtain a cleaning solution, heating to 40-45 ℃, placing the grey cloth in the cleaning solution for cleaning, adding ferment water, and cleaning again, wherein the weight ratio of the ferment water to the water is 1: (4-5).
4. A process for preparing a strong elastic disposable underpants according to claim 3, wherein the second shaping process is as follows:
Soaking the washed grey cloth in a sizing agent solution for 1-2h, taking out, washing with water, and drying at 90-100deg.C;
wherein the shaping solvent is composed of dodecyl dimethyl betaine, dimethyl silicone oil, fatty alcohol polyoxyethylene ether and water according to the weight ratio of (1-2): (5-10): (3-9): 100 is mixed and prepared.
5. A process for the preparation of a strong elastic disposable undergarment according to claim 3 wherein: the diameter ratio of the DTY filaments to the polypropylene filaments is (2-5): 1.
6. A disposable pants with strong elasticity is characterized in that: the strong elastic disposable underpants are prepared by the preparation process of the strong elastic disposable underpants according to any one of claims 1 to 5.
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