WO2021093691A1 - Water-soluble polyvinyl alcohol non-woven fabric, preparation method therefor, and application thereof - Google Patents

Water-soluble polyvinyl alcohol non-woven fabric, preparation method therefor, and application thereof Download PDF

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Publication number
WO2021093691A1
WO2021093691A1 PCT/CN2020/127305 CN2020127305W WO2021093691A1 WO 2021093691 A1 WO2021093691 A1 WO 2021093691A1 CN 2020127305 W CN2020127305 W CN 2020127305W WO 2021093691 A1 WO2021093691 A1 WO 2021093691A1
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Prior art keywords
water
woven fabric
polyvinyl alcohol
pvp
soluble
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PCT/CN2020/127305
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French (fr)
Chinese (zh)
Inventor
崔跃飞
崔若曦
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华南理工大学
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Publication of WO2021093691A1 publication Critical patent/WO2021093691A1/en

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/542—Adhesive fibres
    • D04H1/545—Polyvinyl alcohol
    • 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
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/11—Compounds containing epoxy groups or precursors thereof
    • 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
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/165—Ethers
    • 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
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/402—Amides imides, sulfamic acids
    • D06M13/432—Urea, thiourea or derivatives thereof, e.g. biurets; Urea-inclusion compounds; Dicyanamides; Carbodiimides; Guanidines, e.g. dicyandiamides
    • 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
    • D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
    • D06M15/03—Polysaccharides or derivatives thereof
    • D06M15/05—Cellulose or derivatives thereof
    • D06M15/09—Cellulose ethers
    • 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
    • D06M15/356—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of other unsaturated compounds containing nitrogen, sulfur, silicon or phosphorus atoms
    • D06M15/3562—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of other unsaturated compounds containing nitrogen, sulfur, silicon or phosphorus atoms containing nitrogen
    • 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
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
    • D06M15/647—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing polyether sequences
    • 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
    • D06M2101/24—Polymers or copolymers of alkenylalcohols or esters thereof; Polymers or copolymers of alkenylethers, acetals or ketones
    • 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

Definitions

  • the invention relates to the field of fiber composite material preparation, in particular to a water-soluble polyvinyl alcohol non-woven fabric and a preparation method and application thereof.
  • polyvinyl alcohol As an environmentally friendly material, polyvinyl alcohol (PVA) has been rapidly developed and applied in many fields in recent years.
  • Polyvinyl alcohol (PVA) material has a rich source of raw materials and a relatively mature production process, especially in the field of fiber production and application.
  • Vinylon fiber produced with polyvinyl alcohol as the main raw material, the mature production process uses wet The method spinning is the aqueous solution spinning method, while the preparation of the polyvinyl alcohol non-woven fabric is the polyvinyl alcohol (PVA) fiber formed by the wet spinning coagulation bath in the pre-stage process of vinylon production. After acetal treatment, it is directly used to produce polyvinyl alcohol non-woven fabric, which is also an area that has been rapidly developed and applied in recent years.
  • polyvinyl alcohol non-woven fabrics Due to its water-soluble and environmentally friendly properties, polyvinyl alcohol non-woven fabrics have begun to replace non-woven fabrics made of plastic synthetic resin as raw materials in many fields, such as shoemaking, leather making, mattresses, mother and child quilts, decoration, and chemicals. , Printing, automotive, building materials, furniture and other industries, and clothing interlining, medical and health disposable surgical gowns, masks, caps, bed sheets, hotel disposable tablecloths, beauty, sauna and even today's fashionable gift bags, boutique bags, shopping bags, advertising Bags and so on. Especially in the one-time use application field, it can completely replace the traditional plastic synthetic resin non-woven fabric, and make the product more environmentally friendly.
  • the polyvinyl alcohol solution is wet-spinned, and the resulting nascent fiber is coagulated in an alkaline coagulation bath, and then becomes fiber after neutralization, water washing, multi-stage high-stretching and heat treatment.
  • Polyvinyl alcohol fiber with excellent mechanical properties not only has high strength and high modulus, but also has very good fiber dispersion. This fiber can be used to produce polyvinyl alcohol non-woven fabrics of various specifications.
  • polyvinyl alcohol As we all know, because the melting point of polyvinyl alcohol is as high as 220-230°C, and under heated conditions, polyvinyl alcohol begins to be unstable and decomposes at 180°C. As the temperature continues to rise, not only the decomposition intensifies, but also cross-linking occurs; Therefore, pure polyvinyl alcohol does not have thermoplastic processing and molding properties under normal circumstances.
  • pure polyvinyl alcohol materials cannot be like general thermoplastics polypropylene (PP), polyethylene (PE), Polyester (PET), nylon (PA), etc., through its thermoplasticity to achieve melt spinning (Melt spinning): Melt extrusion spinning (Melt extruded fabric), melt blown spinning (Melt blown spinning), and melt spunbond (Melt spunbond) and other methods to prepare polyvinyl alcohol fiber and non-woven fabric; it is the polyethylene after the wet method (solution spinning) spinning Alcohol fibers also do not have thermoplasticity, so PVA non-woven fabrics produced from wet-spun PVA fibers do not have thermoplastic heat-seal performance at all; this is one of the biggest shortcomings of PVA fibers and non-woven fabrics.
  • PP polypropylene
  • PE polyethylene
  • PET Polyester
  • PA nylon
  • the purpose of the present invention is to provide a water-soluble polyvinyl alcohol non-woven fabric preparation method and application in view of the shortcomings of existing materials and technologies; the water-soluble polyvinyl alcohol non-woven fabric prepared by the present invention not only obtains raw materials The heat-sealable performance, and the mechanical and physical properties have also been improved, which greatly broadens the application field.
  • the present invention adopts a feasible technical scheme to modify the polyvinyl alcohol non-woven fabric in the production process to obtain the same thermoplastic properties mentioned above at one time, so that the produced non-woven fabric has these technical requirements and performances.
  • the polyvinyl alcohol non-woven fabric needs to be processed and modified a second time.
  • the method for preparing a water-soluble polyvinyl alcohol non-woven fabric provided by the present invention includes the following steps (refer to Figure 1):
  • step (2) Transfer the sprayed woven fabric described in step (1) to a low-temperature drying zone for surface drying, and then carry out a hot roller drying and strengthening treatment, the shaping roller is hot rolled and shaped, embossed, cooled by the cooling roller, and flattened and retracted.
  • the water-soluble polyvinyl alcohol nonwoven fabric is obtained by rolling.
  • polyvinyl alcohol fiber composite materials are collectively referred to as polyvinyl alcohol non-woven fabric materials when they appear in the form of products (the same below); the polyvinyl alcohol fiber non-woven fabric prepared by the present invention is suitable for automatic mechanical manufacturing of various ultrasonic welding, sealing and sealing.
  • Various products such as edge, bag making and so on.
  • the composite modifier in step (1) has water solubility.
  • step (1) is mechanical laying or air laying.
  • the polyvinyl alcohol fiber is 0.5-2.0 denier, 35-78mm short fiber; based on the dry weight, the spray amount of the composite modifier is 20wt% of the weight of the fabric to be processed -50%.
  • the low-temperature drying zone is a four-zone temperature-controlled drying tunnel, and the temperature of the low-temperature drying zone is 60/70/80/80°C;
  • the temperature of the drying and strengthening treatment of the hot roller is 100-150°C; the temperature of the hot-rolling and shaping of the shaping roller is 90-130°C; the temperature of the embossing is 120-160°C; the cooling roller is cooled The temperature is 20-30°C; the gram weight GSM of the water-soluble polyvinyl alcohol non-woven fabric is 10-100 g/m 2 .
  • the preparation of the composite modifier in step (1) includes:
  • the water-based film-forming agent, water-based binder, humectant, cellosolve, softener, substrate wetting and penetrating agent, sodium deoxyacetate and water are added into a dissolving container and mixed, and stirred evenly to obtain the composite modifier.
  • the composite modifier includes the following components:
  • Base material wetting and penetrating agent 0.3-0.8 copies
  • the degree of substitution DS of the aqueous film-forming agent is 1.0-1.5; the aqueous film-forming agent is ethyl cellulose (EC); the ethyl cellulose (EC) is a cellulose with thermoplasticity , Can provide non-woven fabrics with heat sealing, thermal bonding and other properties; the ethyl cellulose (EC) used in the present invention refers to the ethyl cellulose (EC) made from alkali cellulose with a DS of 0.8-1.8 ); Ethyl cellulose (EC) in this substitution degree range covers cold-water soluble ethyl cellulose (EC); and water/alcohol mixed solvent soluble ethyl cellulose (EC); substitution degree DS
  • the present invention preferably uses ethyl
  • the water-based binder is polyvinylpyrrolidone (PVP); the water-based binder is PVP-K-12, PVP-K-15, PVP-K-17, PVP-K-12, PVP-K-15, PVP-K-17, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-15, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-15 One of PVP-K-30, PVP-K-60, etc.; the water-based binder is industrial grade, food grade or pharmaceutical grade; the water-based binder is a
  • the moisturizer is hydroxyethyl urea
  • the moisturizer is a brand-new moisturizer with outstanding advantages.
  • hydroxyethyl urea has a more significant moisturizing effect, a smooth coating feeling, a comfortable feeling of non-sticky, non-greasy, and moisturizing, as well as a wide range of applications due to its non-ionic properties.
  • Sex is widely used in cosmetic moisturizing products.
  • the cellosolve is a cosolvent and auxiliary film-forming agent for ethyl cellulose; the cellosolve includes ethylene glycol monomethyl ether, ethylene glycol dimethyl ether, propylene glycol monomethyl ether, propylene glycol ethyl ether, One of 1,2-propanediol-1-monobutyl ether, etc.
  • the cellosolve is a solvent that is miscible with water, not only has a strong dissolving ability, but also has a solubilizing effect, and is mainly used as a co-solvent and auxiliary film-forming agent for ethyl cellulose (EC).
  • the softening agent is a polyether modified siloxane; the softening agent is a copolymerized non-ionic silicone surfactant with unique properties; the softening agent is Qingdao Zhongbao Silicon Material Technology Co., Ltd.
  • the softening properties and antistatic properties of the softener are widely used as finishing agents and softeners for fabrics, and can impart hydrophilicity, sweat absorption and antistatic properties to fabrics.
  • the substrate wetting and penetrating agent is an alkyl glycoside
  • the substrate wetting and penetrating agent is an alkyl glycoside synthesized from glucose and fatty alcohol (Alkyl Polyglycoside (abbreviated as APG); glycosides with sugar units greater than or equal to 2 in complex glycoside compounds are collectively referred to as alkyl polyglycoside (or alkyl polyglycoside); a surfactant with excellent wettability and permeability, and a broad spectrum Antibacterial activity and fully biodegradable properties; in the present invention, in addition to being used as a wetting and penetrating agent for modifiers, it is also used as a plasticizer for polyvinyl alcohol due to its strong solubilizing properties, which has obvious, Stable plasticizing effect without precipitation; the substrate wetting and penetrating agent is one of APG0810, APG1214, APG0814, APG0816 and APG1216 produced by Shanghai Fakai Chemical Co., Ltd. or Shijia
  • the sodium deoxyacetate is a food grade antifungal agent;
  • the water is industrially purified water;
  • the temperature for uniform stirring is room temperature, and unless otherwise specified in the present invention, room temperature refers to 23°C.
  • the agitation is to make the raw materials fully mixed.
  • the present invention provides a water-soluble polyvinyl alcohol non-woven fabric prepared by the above-mentioned preparation method.
  • the water-soluble polyvinyl alcohol non-woven fabric provided by the present invention can be applied to various types of products such as ultrasonic welding sealing, edge sealing, and bag making by automated machinery.
  • the present invention performs post-treatment on polyvinyl alcohol (non-woven fabric) fibers through modifiers and processing techniques, so as to realize the heat sealability of the polyvinyl alcohol non-woven fabrics. It can realize secondary processing products such as edge sealing, sealing, and bag making in the process of automatic heat sealing processing machinery like traditional thermoplastic synthetic resin non-woven fabrics, thereby greatly improving its processing efficiency and reducing costs; greatly expanding Its application area.
  • the application field of the modified polyvinyl alcohol non-woven fabric prepared by the present invention can cover and replace the industrial and civilian product fields prepared by traditional non-woven fabrics and textile fabrics, including shoemaking, leather making, mattresses, and quilts. , Decoration, chemical, printing, automotive, building materials and furniture industries, etc.; such as non-woven fabrics and textile fabrics used in the manufacture of clothing interlinings, medical and health disposable surgical gowns, masks, caps, bed sheets, hotel disposable tablecloths, beauty saunas Even today’s fashionable gift bags, boutique bags, shopping bags and advertising bags, especially in the field of disposable products, various shopping bags, fast-moving consumer goods packaging, takeaway packaging, etc., modified polyvinyl alcohol non-woven fabrics can It completely covers and replaces these traditional plastic synthetic resin non-woven fabrics and textile fabric applications, making the products more environmentally friendly.
  • the present invention has the following advantages and beneficial effects:
  • the water-soluble polyvinyl alcohol non-woven fabric provided by the present invention has excellent heat sealing performance and secondary processing heat sealing performance, which is conducive to the realization of automatic mechanical edge sealing, sealing and continuous bag making processes, thereby Significantly improve the efficiency of product processing and reduce costs;
  • the water-soluble polyvinyl alcohol non-woven fabric provided by the present invention has stronger fiber knots, thereby further improving its mechanical properties;
  • the preparation method of the water-soluble polyvinyl alcohol non-woven fabric provided by the present invention improves the elongation at break of the modified polyvinyl alcohol non-woven fabric, thereby making the modified polyvinyl alcohol non-woven fabric softer and more comfortable And feel better.
  • the water-soluble polyvinyl alcohol non-woven fabric prepared by the present invention has the characteristics of more uniformity and flatness, and is more suitable for automatic mechanical high-speed preparation of various products.
  • the water solubility of the prepared polyvinyl alcohol non-woven fabric remains unchanged and can be completely dissolved in hot water (95°C).
  • Fig. 1 is a process flow chart of the processing process suitable for the water-soluble polyvinyl alcohol non-woven fabric in the embodiment.
  • weight unit can be grams, kilograms, etc., and can also be any other amount commonly used in the art.
  • the polyvinylpyrrolidone (PVP) used is food grade or pharmaceutical grade PVP-K-12, PVP-K-15, PVP-K-17, PVP-K- produced by BASF, American ISP, etc. 30.
  • PVP-K-60 the alkyl glycoside used is one of APG0810, APG1214, APG0814, APG0816, APG1216 produced by Shanghai Fakai Chemical Co., Ltd. and Shijiazhuang Jinmore Chemical Co., Ltd.
  • the softener used is one of 204 water-soluble silicone oil CGF and TS-19 produced by Qingdao Zhongbao Silicon Material Technology Co., Ltd.
  • the water is industrial pure water.
  • the polyvinyl alcohol fiber used refers to the fiber produced by the wet spinning (solution spinning) method.
  • the stated stirring is to make the raw materials fully mixed, so there is no need to limit the stirring speed;
  • the temperature not specified refers to room temperature, and the room temperature in the present invention refers to 23°C.
  • the low-temperature drying zone is 60/70/80/80 °C four-zone temperature-controlled drying tunnel for drying, mainly to achieve surface drying; the temperature of hot roller drying and strengthening is 100 °C, and the temperature of hot rolling is 90 °C, the embossing temperature is 120°C, and the cooling temperature of the cooling roll is 20°C.
  • the polyvinyl alcohol fiber raw material is 0.5 denier, 35mm short fiber; the spray amount of the double-sided spray water-soluble composite modifier is 50% of the weight of the non-woven fabric to be processed based on the dry weight; preparation
  • the gram weight GSM of the water-soluble polyvinyl alcohol non-woven fabric is 10g/m 2 ; the amount of the water-soluble composite modifier (dry weight) for metering spray water is 5 g/m 2 .
  • the water-soluble composite modifier in parts by weight, includes the following components:
  • the blank sample is an unmodified polyvinyl alcohol non-woven fabric with the same GSM. Same below.
  • the low-temperature drying zone is 60/70/80/80 °C four-zone temperature-controlled drying tunnel for drying, mainly to achieve surface drying; the temperature of hot roller drying and strengthening is 150 °C, and the temperature of hot rolling is 130 °C, the embossing temperature is 160 °C, and the cooling temperature of the cooling roll is 30 °C.
  • the polyvinyl alcohol fiber raw material is 2.0 denier, 78mm short fiber; the spray amount of the double-sided spray water-soluble composite modifier is 20% of the weight of the non-woven fabric to be processed based on the dry weight; preparation
  • the gram weight GSM of the water-soluble polyvinyl alcohol non-woven fabric is 100g/m 2 ; the metered spray water-soluble composite modifier (dry weight) is 20 g/m 2 .
  • the water-soluble composite modifier in parts by weight, includes the following components:
  • the low-temperature drying zone is 60/70/80/80 °C four-zone temperature-controlled drying tunnel for drying, mainly to achieve surface drying; the temperature of hot roller drying and strengthening is 120 °C, and the temperature of hot rolling is 120 °C. °C, the embossing temperature is 140°C, and the cooling temperature of the cooling roll is 25°C.
  • Example 3 the raw material of the polyvinyl alcohol fiber is 1.0 denier, 58mm short fiber; the spray amount of the double-sided spray water-soluble composite modifier is 30% of the weight of the non-woven fabric to be processed based on the dry weight; preparation
  • the gram weight GSM of the water-soluble polyvinyl alcohol non-woven fabric is 50g/m 2 ; the amount (dry weight) of the metered spray water-soluble composite modifier (dry weight) is 15 g/m 2 .
  • the water-soluble composite modifier in parts by weight, includes the following components:
  • the low-temperature drying zone is 60/70/80/80 °C four-zone temperature-controlled drying tunnel for drying, mainly to achieve surface drying; the temperature of hot roller drying and strengthening is 120 °C, and the temperature of hot rolling is 140 °C, the embossing temperature is 130°C, and the cooling temperature of the cooling roll is 28°C.
  • Example 4 the polyvinyl alcohol fiber raw material is 1.5 denier, 58mm short fiber; the spray amount of the double-sided spray water-soluble composite modifier is 40% of the weight of the non-woven fabric to be processed based on the dry weight; preparation The gram weight GSM of the water-soluble polyvinyl alcohol non-woven fabric is 30g/m 2 ; the metered spray water-soluble composite modifier (dry weight) is 12 g/m 2 .
  • the water-soluble composite modifier in parts by weight, includes the following components:

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

Disclosed are a water-soluble polyvinyl alcohol non-woven fabric, a preparation method therefor, and an application therefor. The method comprises: opening, carding, and lapping a polyvinyl alcohol fiber raw material produced by wet spinning to obtain a woven fabric to be processed, then transferring into a pre-wet area, and performing double-sided measurement-based spraying processing on a non-woven fabric in the pre-wet area by using a water-soluble composite modifier; and then feeding the fabric into a low-temperature drying area for surface drying, transferring to a heat roller for drying reinforcement, performing hot-rolling shaping by means of a shaping roller, embossing, cooling, flattening, and winding to obtain the water-soluble polyvinyl alcohol non-woven fabric. The water-soluble composite modifier comprises, in parts by weight: 100 parts of water; 3-8 parts of a water-based film forming agent; 0.5-3 parts of a water-based binding agent; 0.3-1 part of a humectant; 2-6 parts of cellosolve; 0.1-0.5 part of a softener; 0.3-0.8 part of a substrate wetting penetrant; and 0.05-0.1 part of sodium deoxyacetate. According to the non-woven fabric modified and prepared by the process above, the heat sealing performance can be greatly improved and the mechanical and physical properties are strengthened.

Description

一种水溶性聚乙烯醇无纺布及其制备方法与应用Water-soluble polyvinyl alcohol non-woven fabric and preparation method and application thereof 技术领域Technical field
本发明涉及纤维复合材料制备领域，具体涉及一种水溶性聚乙烯醇无纺布及其制备方法与应用。 The invention relates to the field of fiber composite material preparation, in particular to a water-soluble polyvinyl alcohol non-woven fabric and a preparation method and application thereof.
背景技术Background technique
聚乙烯醇（PVA）作为一种环境友好型材料，近年来在许多领域得到了快速发展和应用。聚乙烯醇（PVA）材料有着丰富的原料来源和较为成熟的生产工艺，尤其在纤维的生产和应用领域，以聚乙烯醇为主要原料而生产的维尼纶纤维，成熟的生产工艺都是采取湿法纺丝即水溶液纺丝法进行，而聚乙烯醇无纺布的制备则是在生产维尼纶前段工序中，聚乙烯醇（PVA）经湿纺凝固浴成型后的聚乙烯醇纤维，不继续经缩醛处理而直接用于生产聚乙烯醇无纺布，也是近年得到了快速发展和应用的领域。由于聚乙烯醇无纺布具有水溶性和环境友好的属性，在许多领域开始取代以塑料合成树脂为原料制造的无纺布，如制鞋、制革、床垫、子母被、装饰、化工、印刷、汽车、建材，家具等行业，及服装衬布，医疗卫生一次性手术衣，口罩，帽，床单，酒店一次性台布，美容，桑拿乃至当今时尚的礼品袋，精品袋，购物袋，广告袋等等。特别是一次性使用的应用领域，可以完全取代传统的塑料合成树脂无纺布，而使产品更具有环保性。As an environmentally friendly material, polyvinyl alcohol (PVA) has been rapidly developed and applied in many fields in recent years. Polyvinyl alcohol (PVA) material has a rich source of raw materials and a relatively mature production process, especially in the field of fiber production and application. Vinylon fiber produced with polyvinyl alcohol as the main raw material, the mature production process uses wet The method spinning is the aqueous solution spinning method, while the preparation of the polyvinyl alcohol non-woven fabric is the polyvinyl alcohol (PVA) fiber formed by the wet spinning coagulation bath in the pre-stage process of vinylon production. After acetal treatment, it is directly used to produce polyvinyl alcohol non-woven fabric, which is also an area that has been rapidly developed and applied in recent years. Due to its water-soluble and environmentally friendly properties, polyvinyl alcohol non-woven fabrics have begun to replace non-woven fabrics made of plastic synthetic resin as raw materials in many fields, such as shoemaking, leather making, mattresses, mother and child quilts, decoration, and chemicals. , Printing, automotive, building materials, furniture and other industries, and clothing interlining, medical and health disposable surgical gowns, masks, caps, bed sheets, hotel disposable tablecloths, beauty, sauna and even today's fashionable gift bags, boutique bags, shopping bags, advertising Bags and so on. Especially in the one-time use application field, it can completely replace the traditional plastic synthetic resin non-woven fabric, and make the product more environmentally friendly.
由聚乙烯醇纤维的制备技术和工艺可知，聚乙烯醇溶液经湿法纺丝，所得初生纤维在碱性凝固浴中凝固，经中和、水洗和多段高倍拉伸和热处理后成纤，得到具有优异机械性能的聚乙烯醇纤维，不但强度高，模量高，而且纤维的分散性也非常好。采用此纤维可生产出各种规格的聚乙烯醇无纺布。According to the preparation technology and process of polyvinyl alcohol fiber, the polyvinyl alcohol solution is wet-spinned, and the resulting nascent fiber is coagulated in an alkaline coagulation bath, and then becomes fiber after neutralization, water washing, multi-stage high-stretching and heat treatment. Polyvinyl alcohol fiber with excellent mechanical properties not only has high strength and high modulus, but also has very good fiber dispersion. This fiber can be used to produce polyvinyl alcohol non-woven fabrics of various specifications.
众所周知，由于聚乙烯醇熔点高达220-230℃，而在受热条件下，聚乙烯醇于180℃就开始出现不稳定和分解，随着温度的继续上升不但分解加剧，而且伴随着交联产生；所以，纯的聚乙烯醇在一般情况下是不具有热塑性加工成型属性的，所以，目前条件下，纯的聚乙烯醇材料不可能像一般热塑性塑料聚丙烯（PP）、聚乙烯（PE）、聚酯（PET）、尼龙（PA）等一样通过其具有的热塑性实现熔融纺丝（Melt spinning）：即熔融挤出纺丝（Melt extruded fabric）、熔喷纺丝（Melt blown spinning）、和熔融纺粘（Melt spunbond）等方法来制备聚乙烯醇纤维和无纺布织物；就是经过湿法（溶液纺丝）纺丝的聚乙烯醇纤维也不具备热塑性，所以由湿法纺丝的聚乙烯醇纤维生产的聚乙烯醇无纺布也完全不具备热塑热封性能；这是聚乙烯醇纤维和无纺布最大的缺陷之一，即不能像其他常用的热塑性塑料合成树脂所制备的无纺布那样具有优良的热封性能，使其在应用领域受到一定的限制，如无纺布的后期制品加工：封边、封口、制袋等等，只能进行传统的人工缝合而不是由自动化热封制袋加工机械的工艺实现。这样就导致了加工效率低下、成本剧增。As we all know, because the melting point of polyvinyl alcohol is as high as 220-230°C, and under heated conditions, polyvinyl alcohol begins to be unstable and decomposes at 180°C. As the temperature continues to rise, not only the decomposition intensifies, but also cross-linking occurs; Therefore, pure polyvinyl alcohol does not have thermoplastic processing and molding properties under normal circumstances. Therefore, under current conditions, pure polyvinyl alcohol materials cannot be like general thermoplastics polypropylene (PP), polyethylene (PE), Polyester (PET), nylon (PA), etc., through its thermoplasticity to achieve melt spinning (Melt spinning): Melt extrusion spinning (Melt extruded fabric), melt blown spinning (Melt blown spinning), and melt spunbond (Melt spunbond) and other methods to prepare polyvinyl alcohol fiber and non-woven fabric; it is the polyethylene after the wet method (solution spinning) spinning Alcohol fibers also do not have thermoplasticity, so PVA non-woven fabrics produced from wet-spun PVA fibers do not have thermoplastic heat-seal performance at all; this is one of the biggest shortcomings of PVA fibers and non-woven fabrics. One, that is, it cannot have excellent heat-seal performance like other commonly used non-woven fabrics made of thermoplastic synthetic resins, so that it is subject to certain restrictions in the application field, such as the processing of non-woven fabrics: edge sealing, sealing, Bag-making, etc., can only be realized by traditional manual stitching instead of automatic heat-sealing bag-making processing machinery. This leads to low processing efficiency and a sharp increase in cost.
为了解决上述聚乙烯醇无纺布不具备热塑性的缺陷，近年来也有通过对聚乙烯醇无纺布成型后的后加工改性处理而获得热塑性，使之能适用于通过热封、超声波焊接等方法封边、封口、制袋等等性能，如专利CN108221386A、CN109295726A、CN109371681A等是通过对聚乙烯醇无纺布的第二次加工改性，即后期浸轧整理而获得热塑性；专利CN108729246A同样也是通过对成型后的聚乙烯醇无纺布进行第二次加工，即通过涂覆复合的方式获得聚乙烯醇无纺布的热封性能。所以其主要应用领域仅受限于服装衬里、绣花等行业，规模和应用相当有限。In order to solve the above-mentioned defect that polyvinyl alcohol non-woven fabrics do not have thermoplasticity, in recent years, there have also been post-processing modification treatments after molding of polyvinyl alcohol non-woven fabrics to obtain thermoplasticity, making it suitable for heat sealing, ultrasonic welding, etc. Methods of edge sealing, sealing, bag making and other properties, such as patents CN108221386A, CN109295726A, CN109371681A, etc. are obtained through the second processing modification of polyvinyl alcohol non-woven fabric, that is, late padding finishing; the same is true for patent CN108729246A The heat-sealing performance of the polyvinyl alcohol non-woven fabric is obtained by performing the second processing on the molded polyvinyl alcohol non-woven fabric, that is, by coating and compounding. Therefore, its main application areas are limited to clothing lining, embroidery and other industries, and its scale and application are quite limited.
技术解决方案Technical solutions
本发明的目的在于针对现有材料和技术的不足，提供了一种水溶性聚乙烯醇无纺布的制备方法及应用；经过本发明制备的水溶性聚乙烯醇无纺布不但获得了原材料不具备的可热封性能，而且在机械物理性能方面也得到提高，使其应用领域大幅拓宽。The purpose of the present invention is to provide a water-soluble polyvinyl alcohol non-woven fabric preparation method and application in view of the shortcomings of existing materials and technologies; the water-soluble polyvinyl alcohol non-woven fabric prepared by the present invention not only obtains raw materials The heat-sealable performance, and the mechanical and physical properties have also been improved, which greatly broadens the application field.
本发明是通过可行的技术方案，在聚乙烯醇无纺布的生产过程中进行改性而一次性获得上述同样的热塑性能，使生产出来的无纺布就具备这些技术要求和性能，而不需要对聚乙烯醇无纺布再进行第二次加工改性。The present invention adopts a feasible technical scheme to modify the polyvinyl alcohol non-woven fabric in the production process to obtain the same thermoplastic properties mentioned above at one time, so that the produced non-woven fabric has these technical requirements and performances. The polyvinyl alcohol non-woven fabric needs to be processed and modified a second time.
本发明的目的至少通过如下技术方案之一实现。The purpose of the present invention is achieved by at least one of the following technical solutions.
本发明提供的一种水溶性聚乙烯醇无纺布的制备方法，包括如下步骤（可参照图1所示）：The method for preparing a water-soluble polyvinyl alcohol non-woven fabric provided by the present invention includes the following steps (refer to Figure 1):
（1）将湿法纺丝生产的聚乙烯醇纤维原料经过开松、梳理、铺网（机械铺网或气流铺网）后，得到待加工纺布，然后将所述待加工纺布（半成品）转移至预湿区中，在预湿区中使用复合改性剂对待加工纺布进行双面计量喷淋处理，得到喷淋后的纺布；(1) After opening, carding, and laying (mechanical laying or air laying) of the polyvinyl alcohol fiber raw material produced by wet spinning, a woven fabric to be processed is obtained, and then the woven fabric to be processed (semi-finished product) 1) Transfer to the pre-wet zone, use the composite modifier in the pre-wet zone to perform double-sided metering spray treatment on the fabric to be processed to obtain the sprayed fabric;
（2）将步骤（1）所述喷淋后的纺布转移至低温干燥区中进行表面干燥，再进行热辊干燥加固处理，定型辊热轧定型，压花，冷却辊冷却，展平收卷得到所述水溶性聚乙烯醇无纺布。(2) Transfer the sprayed woven fabric described in step (1) to a low-temperature drying zone for surface drying, and then carry out a hot roller drying and strengthening treatment, the shaping roller is hot rolled and shaped, embossed, cooled by the cooling roller, and flattened and retracted. The water-soluble polyvinyl alcohol nonwoven fabric is obtained by rolling.
这种聚乙烯醇纤维复合材料以产品形式出现时统称为聚乙烯醇无纺布材料（下同）；本发明制备的聚乙烯醇纤维无纺布适用于自动化机械制造各类超声波焊接封口、封边、制袋等各类产品。Such polyvinyl alcohol fiber composite materials are collectively referred to as polyvinyl alcohol non-woven fabric materials when they appear in the form of products (the same below); the polyvinyl alcohol fiber non-woven fabric prepared by the present invention is suitable for automatic mechanical manufacturing of various ultrasonic welding, sealing and sealing. Various products such as edge, bag making and so on.
进一步地，步骤（1）所述复合改性剂具有水溶性。Further, the composite modifier in step (1) has water solubility.
进一步地，步骤（1）所述铺网为机械铺网或气流铺网。Further, the laying of the net in step (1) is mechanical laying or air laying.
进一步地，步骤（1）所述聚乙烯醇纤维为0.5-2.0旦，35-78mm的短纤维；以干重计，所述复合改性剂的喷淋量为待加工纺布重量的20wt%-50%。Further, in step (1), the polyvinyl alcohol fiber is 0.5-2.0 denier, 35-78mm short fiber; based on the dry weight, the spray amount of the composite modifier is 20wt% of the weight of the fabric to be processed -50%.
进一步地，步骤（2）所述低温干燥区为四区控温的干燥烘道，所述低温干燥区的温度为60/70/80/80℃；Further, in step (2), the low-temperature drying zone is a four-zone temperature-controlled drying tunnel, and the temperature of the low-temperature drying zone is 60/70/80/80°C;
进一步地，所述热辊干燥加固处理的温度为100-150℃；所述定型辊热轧定型的温度为90-130℃；所述压花的温度为120-160℃；所述冷却辊冷却的温度为20-30℃；所述水溶性聚乙烯醇无纺布的克重GSM为10-100g/m 2。 Further, the temperature of the drying and strengthening treatment of the hot roller is 100-150°C; the temperature of the hot-rolling and shaping of the shaping roller is 90-130°C; the temperature of the embossing is 120-160°C; the cooling roller is cooled The temperature is 20-30°C; the gram weight GSM of the water-soluble polyvinyl alcohol non-woven fabric is 10-100 g/m 2 .
进一步地，步骤（1）所述复合改性剂的制备，包括：Further, the preparation of the composite modifier in step (1) includes:
将水性成膜剂、水性粘结剂、保湿剂、溶纤剂、柔顺剂、基材润湿渗透剂、脱氧乙酸钠及水加入溶解容器中混合，搅拌均匀，得到所述复合改性剂。The water-based film-forming agent, water-based binder, humectant, cellosolve, softener, substrate wetting and penetrating agent, sodium deoxyacetate and water are added into a dissolving container and mixed, and stirred evenly to obtain the composite modifier.
进一步地，按照重量份数计，所述复合改性剂，包括如下组分：Further, in terms of parts by weight, the composite modifier includes the following components:
水                                   100份；Water 100 copies;
水性成膜剂                           3-8份；Water-based film-forming agent 3-8 copies;
水性粘结剂                           0.5-3份；Water-based adhesive 0.5-3 copies;
保湿剂                               0.3-1.0份；Moisturizer 0.3-1.0 copies;
溶纤剂                               2-6份；Cellosolve 2-6 copies;
柔顺剂                               0.1-0.5份；Softener 0.1-0.5 copies;
基材润湿渗透剂                       0.3-0.8份；Base material wetting and penetrating agent 0.3-0.8 copies;
脱氧乙酸钠                           0.05-0.1份。Sodium deoxyacetate 0.05-0.1 copies.
进一步地，所述水性成膜剂的取代度DS为1.0-1.5；所述水性成膜剂为乙基纤维素（EC）；所述乙基纤维素（EC）是一种具有热塑性的纤维素，可以为无纺布提供热封、热粘结等性能；本发明所用的乙基纤维素（EC）是指由碱纤维素制得的取代度DS为0.8-1.8的乙基纤维素（EC）；此取代度范围的乙基纤维素（EC）涵盖冷水可溶型的乙基纤维素（EC）；和水/醇的混合溶剂可溶型的乙基纤维素（EC）；取代度DS越大，乙基纤维素（EC）的热塑性能越优异。所以，优选的，为了同时使乙基纤维素（EC）具有水溶性和热封性能，本发明优选取代度为DS为1.0-1.5的乙基纤维素（EC）。Further, the degree of substitution DS of the aqueous film-forming agent is 1.0-1.5; the aqueous film-forming agent is ethyl cellulose (EC); the ethyl cellulose (EC) is a cellulose with thermoplasticity , Can provide non-woven fabrics with heat sealing, thermal bonding and other properties; the ethyl cellulose (EC) used in the present invention refers to the ethyl cellulose (EC) made from alkali cellulose with a DS of 0.8-1.8 ); Ethyl cellulose (EC) in this substitution degree range covers cold-water soluble ethyl cellulose (EC); and water/alcohol mixed solvent soluble ethyl cellulose (EC); substitution degree DS The larger the value, the better the thermoplastic properties of ethyl cellulose (EC). Therefore, preferably, in order to make ethyl cellulose (EC) have water solubility and heat-sealability at the same time, the present invention preferably uses ethyl cellulose (EC) with a DS of 1.0-1.5.
进一步地，所述水性粘结剂为聚乙烯吡咯烷酮（PVP）；所述水性粘结剂为巴斯夫公司或美国ISP公司生产的PVP-K-12、PVP-K-15、PVP-K-17、PVP-K-30、PVP-K-60等中的一种；所述水性粘结剂为工业级、食品级或医药级；所述水性粘结剂是一种有较强粘结性能的水溶性树脂，不但具有优异的水溶性和相容性，同时具有较强的络合力，所以有很强的增溶和粘结力，而且水溶粘度很低；这种低粘度属性可以帮助改性剂对无纺布深层进行渗透和粘结，从而使改性的无纺布整体性能得到均匀和提高。Further, the water-based binder is polyvinylpyrrolidone (PVP); the water-based binder is PVP-K-12, PVP-K-15, PVP-K-17, PVP-K-12, PVP-K-15, PVP-K-17, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-15, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-12, PVP-K-15 One of PVP-K-30, PVP-K-60, etc.; the water-based binder is industrial grade, food grade or pharmaceutical grade; the water-based binder is a water-soluble binder with strong bonding performance The resin has excellent water solubility and compatibility, and also has strong complexing power, so it has strong solubilization and cohesive power, and the water-soluble viscosity is very low; this low-viscosity property can help modification The agent penetrates and bonds the deep layer of the non-woven fabric, so that the overall performance of the modified non-woven fabric is uniform and improved.
进一步地，所述的保湿剂为羟乙基脲，所述保湿剂是一种全新的，具有突出优势的保湿剂。与传统的保湿剂相比，羟乙基尿素具有更显著的保湿效果，滑爽的涂敷感觉，具有不发粘、不油腻、滋润的舒适感觉，以及自身非离子性带来的广泛的适用性被广泛使用在化妆品保湿产品中。Further, the moisturizer is hydroxyethyl urea, and the moisturizer is a brand-new moisturizer with outstanding advantages. Compared with traditional moisturizers, hydroxyethyl urea has a more significant moisturizing effect, a smooth coating feeling, a comfortable feeling of non-sticky, non-greasy, and moisturizing, as well as a wide range of applications due to its non-ionic properties. Sex is widely used in cosmetic moisturizing products.
进一步地，所述溶纤剂为乙基纤维素的助溶剂和辅助成膜剂；所述溶纤剂包括乙二醇单甲醚、乙二醇二甲醚、丙二醇单甲醚、丙二醇乙醚、1,2-丙二醇-1-单丁醚等中的一种。所述溶纤剂是可以与水进行混溶的一种溶剂，不但具有极强的溶解能力，还具有增溶作用，主要用作乙基纤维素（EC）的助溶剂和辅助成膜剂。Further, the cellosolve is a cosolvent and auxiliary film-forming agent for ethyl cellulose; the cellosolve includes ethylene glycol monomethyl ether, ethylene glycol dimethyl ether, propylene glycol monomethyl ether, propylene glycol ethyl ether, One of 1,2-propanediol-1-monobutyl ether, etc. The cellosolve is a solvent that is miscible with water, not only has a strong dissolving ability, but also has a solubilizing effect, and is mainly used as a co-solvent and auxiliary film-forming agent for ethyl cellulose (EC).
进一步地，所述柔顺剂为聚醚改性硅氧烷；所述柔顺剂为一种共聚而成的性能独特的有机硅非离子表面活性剂；所述柔顺剂为青岛中宝硅材料科技有限公司生产的204水溶性硅油CGF、204水溶性硅油TS-19中的一种；所述柔顺剂是一种共聚而成的性能独特的有机硅非离子表面活性剂。所述柔顺剂的柔软特性及抗静电性能用被广泛用作织物的后整理剂、柔软剂，可赋予织物亲水性、吸汗性及防静电性。Further, the softening agent is a polyether modified siloxane; the softening agent is a copolymerized non-ionic silicone surfactant with unique properties; the softening agent is Qingdao Zhongbao Silicon Material Technology Co., Ltd. One of 204 water-soluble silicone oil CGF and 204 water-soluble silicone oil TS-19 produced by the company; the softener is a copolymerized non-ionic silicone surfactant with unique properties. The softening properties and antistatic properties of the softener are widely used as finishing agents and softeners for fabrics, and can impart hydrophilicity, sweat absorption and antistatic properties to fabrics.
进一步地，所述基材润湿渗透剂为烷基糖苷；所述基材润湿渗透剂为葡萄糖和脂肪醇合成的烷基糖苷(Alkyl Polyglycoside.简称APG)；复杂糖苷化合物中糖单元大于等于2的糖苷，统称为烷基多糖苷(或烷基多苷)；属于一种表面活性剂，具有优异的湿润性和渗透性，广谱的抗菌活性、和可完全生物降解属性；在本发明中除了作为改性剂的湿润和渗透剂外，还因其较强的增溶性能被作为聚乙烯醇的增塑剂使用，具有明显、稳定、无析出的增塑效果；所述基材润湿渗透剂为上海发凯化工有限公司或石家庄金莫尔化学品有限公司生产的APG0810、APG1214、APG0814、APG0816及APG1216等中的一种。Further, the substrate wetting and penetrating agent is an alkyl glycoside; the substrate wetting and penetrating agent is an alkyl glycoside synthesized from glucose and fatty alcohol (Alkyl Polyglycoside (abbreviated as APG); glycosides with sugar units greater than or equal to 2 in complex glycoside compounds are collectively referred to as alkyl polyglycoside (or alkyl polyglycoside); a surfactant with excellent wettability and permeability, and a broad spectrum Antibacterial activity and fully biodegradable properties; in the present invention, in addition to being used as a wetting and penetrating agent for modifiers, it is also used as a plasticizer for polyvinyl alcohol due to its strong solubilizing properties, which has obvious, Stable plasticizing effect without precipitation; the substrate wetting and penetrating agent is one of APG0810, APG1214, APG0814, APG0816 and APG1216 produced by Shanghai Fakai Chemical Co., Ltd. or Shijiazhuang Jinmore Chemical Co., Ltd.
进一步地，所述脱氧乙酸钠为食品级防霉剂；所述水为工业纯净水；所述搅拌均匀的温度为室温，本发明中如无特殊说明，室温均指23℃。所述搅拌均匀是为了使原料之间充分的混合。Further, the sodium deoxyacetate is a food grade antifungal agent; the water is industrially purified water; the temperature for uniform stirring is room temperature, and unless otherwise specified in the present invention, room temperature refers to 23°C. The agitation is to make the raw materials fully mixed.
本发明提供一种由上述的制备方法制得的水溶性聚乙烯醇无纺布。The present invention provides a water-soluble polyvinyl alcohol non-woven fabric prepared by the above-mentioned preparation method.
本发明提供的水溶性聚乙烯醇无纺布能够应用在自动化机械制造各类超声波焊接封口、封边、制袋的各类产品中。The water-soluble polyvinyl alcohol non-woven fabric provided by the present invention can be applied to various types of products such as ultrasonic welding sealing, edge sealing, and bag making by automated machinery.
本发明针对现有的聚乙烯醇无纺布的缺陷，通过改性剂和加工工艺对聚乙烯醇（无纺布）纤维进行后处理，从而实现聚乙烯醇无纺布的可热封性，使其能像传统的热塑性塑料合成树脂无纺布那样可以在自动化热封加工机械的工艺上实现封边、封口、制袋等二次加工制品，从而大幅提高其加工效率，降低成本；大幅拓宽其应用领域。Aiming at the defects of the existing polyvinyl alcohol non-woven fabrics, the present invention performs post-treatment on polyvinyl alcohol (non-woven fabric) fibers through modifiers and processing techniques, so as to realize the heat sealability of the polyvinyl alcohol non-woven fabrics. It can realize secondary processing products such as edge sealing, sealing, and bag making in the process of automatic heat sealing processing machinery like traditional thermoplastic synthetic resin non-woven fabrics, thereby greatly improving its processing efficiency and reducing costs; greatly expanding Its application area.
本发明制备的改性聚乙烯醇无纺布的应用领域：可涵盖和替代传统的无纺布及纺织布料所制备的工业、民用制品领域，包括制鞋、制革、床垫、子母被、装饰、化工、印刷、汽车、建材及家具等行业等；如无纺布和纺织布料用于制造的服装衬布、医疗卫生一次性手术衣、口罩、帽、床单、酒店一次性台布、美容桑拿乃至当今时尚的礼品袋、精品袋、购物袋及广告袋等，特别是一次性使用的制品领域，各类购物袋、快消品包装领域、外卖包装等，改性聚乙烯醇无纺布可以完全涵盖和替代这些传统的塑料合成树脂无纺布和纺织布应用领域，而使产品更具有环保性。The application field of the modified polyvinyl alcohol non-woven fabric prepared by the present invention: it can cover and replace the industrial and civilian product fields prepared by traditional non-woven fabrics and textile fabrics, including shoemaking, leather making, mattresses, and quilts. , Decoration, chemical, printing, automotive, building materials and furniture industries, etc.; such as non-woven fabrics and textile fabrics used in the manufacture of clothing interlinings, medical and health disposable surgical gowns, masks, caps, bed sheets, hotel disposable tablecloths, beauty saunas Even today’s fashionable gift bags, boutique bags, shopping bags and advertising bags, especially in the field of disposable products, various shopping bags, fast-moving consumer goods packaging, takeaway packaging, etc., modified polyvinyl alcohol non-woven fabrics can It completely covers and replaces these traditional plastic synthetic resin non-woven fabrics and textile fabric applications, making the products more environmentally friendly.
有益效果Beneficial effect
与现有技术相比，本发明具有如下优点和有益效果：Compared with the prior art, the present invention has the following advantages and beneficial effects:
（1）本发明提供的水溶性聚乙烯醇无纺布，具备优异的热封性能，具备了二次加工的热封性能，利于实现自动化机械的封边、封口和连续制袋等工艺，从而大幅提高制品加工的效率和降低成本；(1) The water-soluble polyvinyl alcohol non-woven fabric provided by the present invention has excellent heat sealing performance and secondary processing heat sealing performance, which is conducive to the realization of automatic mechanical edge sealing, sealing and continuous bag making processes, thereby Significantly improve the efficiency of product processing and reduce costs;
（2）本发明提供的水溶性聚乙烯醇无纺布，其纤维结点更牢固，从而使其机械性能得到进一步提高；(2) The water-soluble polyvinyl alcohol non-woven fabric provided by the present invention has stronger fiber knots, thereby further improving its mechanical properties;
（3）本发明提供的水溶性聚乙烯醇无纺布的制备方法，使改性聚乙烯醇无纺布的断裂伸长率得到提高，从而使改性聚乙烯醇无纺布更柔软更舒适和手感更好。(3) The preparation method of the water-soluble polyvinyl alcohol non-woven fabric provided by the present invention improves the elongation at break of the modified polyvinyl alcohol non-woven fabric, thereby making the modified polyvinyl alcohol non-woven fabric softer and more comfortable And feel better.
（4）与传统工艺生产的聚乙烯醇无纺布对比，本发明制备的水溶性聚乙烯醇无纺布，具有更均匀、更平整的特征，更适合自动化的机械高速制备各类制品。(4) Compared with the polyvinyl alcohol non-woven fabric produced by the traditional process, the water-soluble polyvinyl alcohol non-woven fabric prepared by the present invention has the characteristics of more uniformity and flatness, and is more suitable for automatic mechanical high-speed preparation of various products.
（5）本发明提供的水溶性聚乙烯醇无纺布的制备方法，制得的聚乙烯醇无纺布的水溶性能没有改变，于热水下（95℃）可以完全溶解。(5) In the method for preparing the water-soluble polyvinyl alcohol non-woven fabric provided by the present invention, the water solubility of the prepared polyvinyl alcohol non-woven fabric remains unchanged and can be completely dissolved in hot water (95°C).
附图说明Description of the drawings
图1为实施例中适用于水溶性聚乙烯醇无纺布的加工工艺流程图。Fig. 1 is a process flow chart of the processing process suitable for the water-soluble polyvinyl alcohol non-woven fabric in the embodiment.
 To
本发明的实施方式Embodiments of the present invention
以下结合附图和实例对本发明的具体实施作进一步说明，但本发明的实施和保护不限于此。需指出的是，以下若有未特别详细说明之过程，均是本领域技术人员可参照现有技术实现或理解的。所用试剂或仪器未注明生产厂商者，视为可以通过市售购买得到的常规产品。The specific implementation of the present invention will be further described below with reference to the drawings and examples, but the implementation and protection of the present invention are not limited to this. It should be pointed out that if there are processes that are not specifically described in detail below, those skilled in the art can implement or understand with reference to the prior art. If the manufacturer of the reagent or instrument is not indicated, it is regarded as a conventional product that can be purchased on the market.
以下实施例及对比例所用到的重量（质量）份数，作为举例，重量单位可以为克、千克等，也可以是本领域常用的任意其他用量。The weight (mass) parts used in the following examples and comparative examples, as an example, the weight unit can be grams, kilograms, etc., and can also be any other amount commonly used in the art.
以下实施例中，所使用的聚乙烯吡咯烷酮（PVP）由巴斯夫公司、美国ISP等生产的食品级或医药级PVP-K-12、PVP-K-15、PVP-K-17、PVP-K-30、PVP-K-60中的一种；所使用的烷基糖苷由上海发凯化工有限公司、石家庄金莫尔化学品有限公司生产的APG0810、APG1214、APG0814、APG0816、APG1216中的一种；所使用的柔顺剂由青岛中宝硅材料科技有限公司生产的204水溶性硅油CGF、TS-19中的一种。 In the following examples, the polyvinylpyrrolidone (PVP) used is food grade or pharmaceutical grade PVP-K-12, PVP-K-15, PVP-K-17, PVP-K- produced by BASF, American ISP, etc. 30. One of PVP-K-60; the alkyl glycoside used is one of APG0810, APG1214, APG0814, APG0816, APG1216 produced by Shanghai Fakai Chemical Co., Ltd. and Shijiazhuang Jinmore Chemical Co., Ltd.; The softener used is one of 204 water-soluble silicone oil CGF and TS-19 produced by Qingdao Zhongbao Silicon Material Technology Co., Ltd.
所述的水为工业纯净水。The water is industrial pure water.
所使用的聚乙烯醇纤维是指由湿法纺丝（溶液纺丝）法生产的纤维。The polyvinyl alcohol fiber used refers to the fiber produced by the wet spinning (solution spinning) method.
所述的搅拌均是为了使原料之间充分的混合，因此可不用限制搅拌速度；The stated stirring is to make the raw materials fully mixed, so there is no need to limit the stirring speed;
本发明中未指明温度的均指室温，本发明所述的室温是指23℃。In the present invention, the temperature not specified refers to room temperature, and the room temperature in the present invention refers to 23°C.
    以下实施例中，所述的制备工艺和方法按图1（装置）工艺和步骤进行，其工艺条件控制也按上述描述进行。In the following embodiments, the preparation process and method described are carried out according to the process and steps of Figure 1 (device), and the control of the process conditions is also carried out according to the above description.
实施例1Example 1
水溶性聚乙烯醇无纺布的改性方法按图1所述工艺和方法进行：The modification method of the water-soluble polyvinyl alcohol non-woven fabric is carried out according to the process and method described in Figure 1:
实施例1中，低温干燥区为60/70/80/80℃四区控温的干燥烘道进行干燥，主要实现表面干燥；热辊干燥加固的温度为100℃，热轧定型的温度为90℃，所述压花的温度为120℃，冷却辊冷却的温度为20℃。In Example 1, the low-temperature drying zone is 60/70/80/80 ℃ four-zone temperature-controlled drying tunnel for drying, mainly to achieve surface drying; the temperature of hot roller drying and strengthening is 100 ℃, and the temperature of hot rolling is 90 ℃, the embossing temperature is 120°C, and the cooling temperature of the cooling roll is 20°C.
实施例1中，聚乙烯醇纤维原料为0.5旦，35mm的短纤维；双面喷淋水溶性的复合改性剂的喷淋量以干重计为待加工无纺布重量的50%；制备的水溶性聚乙烯醇无纺布的克重GSM为10g/m 2；则其中计量喷淋水溶性的复合改性剂量（干重）为5克/m 2。 In Example 1, the polyvinyl alcohol fiber raw material is 0.5 denier, 35mm short fiber; the spray amount of the double-sided spray water-soluble composite modifier is 50% of the weight of the non-woven fabric to be processed based on the dry weight; preparation The gram weight GSM of the water-soluble polyvinyl alcohol non-woven fabric is 10g/m 2 ; the amount of the water-soluble composite modifier (dry weight) for metering spray water is 5 g/m 2 .
水溶性的复合改性剂，按重量份数计，包括如下组分：The water-soluble composite modifier, in parts by weight, includes the following components:
组份（份）Composition (parts)
水                                    100；Water 100;
乙基纤维素（DS:1.5）                    3；Ethyl cellulose (DS: 1.5) 3;
PVP-K-60                              0.5；PVP-K-60 0.5;
羟乙基脲                              0.3；Hydroxyethyl urea 0.3;
丙二醇单甲醚                            6；Propylene glycol monomethyl ether 6;
CGF                                   0.1；CGF 0.1;
APG0810                               0.3；APG0810 0.3;
脱氧乙酸钠                            0.05 。Sodium deoxyacetate 0.05.
上述各组份分别计量后，加入溶解容器中，室温下搅拌充分溶解均匀即为本发明所述的一种水溶性的复合改性剂。After the above-mentioned components are separately measured, they are added to a dissolving container, and stirred at room temperature to dissolve thoroughly, which is a water-soluble composite modifier according to the present invention.
上述实施例1制备的水溶性聚乙烯醇无纺布技术指标如表1所示。The technical indicators of the water-soluble polyvinyl alcohol non-woven fabric prepared in Example 1 above are shown in Table 1.
表1 Table 1
Figure dest_path_image002
Figure dest_path_image002
注：空白样为同等GSM的无改性聚乙烯醇无纺布。下同。Note: The blank sample is an unmodified polyvinyl alcohol non-woven fabric with the same GSM. Same below.
由以上数据可知，实施例1制备的水溶性聚乙烯醇无纺布，与空白样对比，不但机械力学性能获得提高，同时也获得了热封性能。From the above data, it can be seen that the water-soluble polyvinyl alcohol non-woven fabric prepared in Example 1, compared with the blank sample, not only improves the mechanical properties, but also obtains the heat-sealing performance.
实施例2Example 2
水溶性聚乙烯醇无纺布的改性方法按图1所述工艺和方法进行：The modification method of the water-soluble polyvinyl alcohol non-woven fabric is carried out according to the process and method described in Figure 1:
实施例2中，低温干燥区为60/70/80/80℃四区控温的干燥烘道进行干燥，主要实现表面干燥；热辊干燥加固的温度为150℃，热轧定型的温度为130℃，所述压花的温度为160℃，冷却辊冷却的温度为30℃。In Example 2, the low-temperature drying zone is 60/70/80/80 ℃ four-zone temperature-controlled drying tunnel for drying, mainly to achieve surface drying; the temperature of hot roller drying and strengthening is 150 ℃, and the temperature of hot rolling is 130 °C, the embossing temperature is 160 °C, and the cooling temperature of the cooling roll is 30 °C.
实施例2中，聚乙烯醇纤维原料为2.0旦，78mm的短纤维；双面喷淋水溶性的复合改性剂的喷淋量以干重计为待加工无纺布重量的20%；制备的水溶性聚乙烯醇无纺布的克重GSM为100g/m 2；则其中计量喷淋水溶性的复合改性剂量（干重）为20克/m 2。 In Example 2, the polyvinyl alcohol fiber raw material is 2.0 denier, 78mm short fiber; the spray amount of the double-sided spray water-soluble composite modifier is 20% of the weight of the non-woven fabric to be processed based on the dry weight; preparation The gram weight GSM of the water-soluble polyvinyl alcohol non-woven fabric is 100g/m 2 ; the metered spray water-soluble composite modifier (dry weight) is 20 g/m 2 .
水溶性的复合改性剂，按重量份数计，包括如下组分：The water-soluble composite modifier, in parts by weight, includes the following components:
组份（份）Composition (parts)
水                                    100；Water 100;
乙基纤维素（DS:1.0）                    8；Ethyl cellulose (DS: 1.0) 8;
PVP-K-12                               3；PVP-K-12 3;
羟乙基脲                              1.0；Hydroxyethyl urea 1.0;
乙二醇二甲醚                           2；Ethylene glycol dimethyl ether 2;
TS-19                                 0.5；TS-19 0.5;
APG0814                              0.8；APG0814 0.8;
脱氧乙酸钠                            0.1。Sodium deoxyacetate 0.1.
上述各组份分别计量后，加入溶解容器中，室温下搅拌充分溶解均匀即为本发明所述的一种水溶性的复合改性剂。After the above-mentioned components are separately measured, they are added to a dissolving container, and stirred at room temperature to dissolve thoroughly, which is a water-soluble composite modifier according to the present invention.
上述实施例2制备的水溶性聚乙烯醇无纺布技术指标如表2所示。The technical indicators of the water-soluble polyvinyl alcohol non-woven fabric prepared in Example 2 above are shown in Table 2.
表2 Table 2
Figure dest_path_image004
Figure dest_path_image004
由以上数据可知，实施例2制备的水溶性聚乙烯醇无纺布，与空白样对比，不但机械力学性能获得提高，同时也获得了优异的热封性能。It can be seen from the above data that the water-soluble polyvinyl alcohol non-woven fabric prepared in Example 2 is compared with the blank sample, not only the mechanical properties are improved, but also the excellent heat sealing performance is obtained.
实施例3Example 3
水溶性聚乙烯醇无纺布的改性方法按图1所述工艺和方法进行：The modification method of the water-soluble polyvinyl alcohol non-woven fabric is carried out according to the process and method described in Figure 1:
实施例3中，低温干燥区为60/70/80/80℃四区控温的干燥烘道进行干燥，主要实现表面干燥；热辊干燥加固的温度为120℃，热轧定型的温度为120℃，所述压花的温度为140℃，冷却辊冷却的温度为25℃。In Example 3, the low-temperature drying zone is 60/70/80/80 ℃ four-zone temperature-controlled drying tunnel for drying, mainly to achieve surface drying; the temperature of hot roller drying and strengthening is 120 ℃, and the temperature of hot rolling is 120 ℃. ℃, the embossing temperature is 140°C, and the cooling temperature of the cooling roll is 25°C.
实施例3中，聚乙烯醇纤维原料为1.0旦，58mm的短纤维；双面喷淋水溶性的复合改性剂的喷淋量以干重计为待加工无纺布重量的30%；制备的水溶性聚乙烯醇无纺布的克重GSM为50g/m 2；则其中计量喷淋水溶性的复合改性剂量（干重）为15克/m 2。 In Example 3, the raw material of the polyvinyl alcohol fiber is 1.0 denier, 58mm short fiber; the spray amount of the double-sided spray water-soluble composite modifier is 30% of the weight of the non-woven fabric to be processed based on the dry weight; preparation The gram weight GSM of the water-soluble polyvinyl alcohol non-woven fabric is 50g/m 2 ; the amount (dry weight) of the metered spray water-soluble composite modifier (dry weight) is 15 g/m 2 .
水溶性的复合改性剂，按重量份数计，包括如下组分：The water-soluble composite modifier, in parts by weight, includes the following components:
组份（份）Composition (parts)
水                                    100；Water 100;
乙基纤维素（DS:1.2）                    6；Ethyl cellulose (DS: 1.2) 6;
PVP-K-15                              2.0；PVP-K-15 2.0;
羟乙基脲                              0.5；Hydroxyethyl urea 0.5;
丙二醇乙醚                             5；Propylene glycol ethyl ether 5;
CGF                                   0.3；CGF 0.3;
APG0816                               0.5；APG0816 0.5;
脱氧乙酸钠                            0.08 。Sodium deoxyacetate 0.08.
上述各组份分别计量后，加入溶解容器中，室温下搅拌充分溶解均匀即为本发明所述的一种水溶性的复合改性剂。After the above-mentioned components are separately measured, they are added to a dissolving container, and stirred at room temperature to dissolve thoroughly, which is a water-soluble composite modifier according to the present invention.
上述实施例3制备的水溶性聚乙烯醇无纺布技术指标如表3所示。The technical indicators of the water-soluble polyvinyl alcohol non-woven fabric prepared in Example 3 are shown in Table 3.
表3 table 3
Figure dest_path_image006
Figure dest_path_image006
由以上数据可知，实施例3制备的水溶性聚乙烯醇无纺布，与空白样对比，不但机械力学性能获得提高，同时也获得了热封性能。From the above data, it can be seen that the water-soluble polyvinyl alcohol non-woven fabric prepared in Example 3, compared with the blank sample, not only improves the mechanical properties, but also obtains the heat-seal performance.
 To
实施例4Example 4
水溶性聚乙烯醇无纺布的改性方法按图1所述工艺和方法进行：The modification method of the water-soluble polyvinyl alcohol non-woven fabric is carried out according to the process and method described in Figure 1:
实施例4中，低温干燥区为60/70/80/80℃四区控温的干燥烘道进行干燥，主要实现表面干燥；热辊干燥加固的温度为120℃，热轧定型的温度为140℃，所述压花的温度为130℃，冷却辊冷却的温度为28℃。In Example 4, the low-temperature drying zone is 60/70/80/80 ℃ four-zone temperature-controlled drying tunnel for drying, mainly to achieve surface drying; the temperature of hot roller drying and strengthening is 120 ℃, and the temperature of hot rolling is 140 ℃, the embossing temperature is 130°C, and the cooling temperature of the cooling roll is 28°C.
实施例4中，聚乙烯醇纤维原料为1.5旦，58mm的短纤维；双面喷淋水溶性的复合改性剂的喷淋量以干重计为待加工无纺布重量的40%；制备的水溶性聚乙烯醇无纺布的克重GSM为30g/m 2；则其中计量喷淋水溶性的复合改性剂量（干重）为12克/m 2。 In Example 4, the polyvinyl alcohol fiber raw material is 1.5 denier, 58mm short fiber; the spray amount of the double-sided spray water-soluble composite modifier is 40% of the weight of the non-woven fabric to be processed based on the dry weight; preparation The gram weight GSM of the water-soluble polyvinyl alcohol non-woven fabric is 30g/m 2 ; the metered spray water-soluble composite modifier (dry weight) is 12 g/m 2 .
水溶性的复合改性剂，按重量份数计，包括如下组分：The water-soluble composite modifier, in parts by weight, includes the following components:
组份（份）Composition (parts)
水                                    100；Water 100;
乙基纤维素（DS:1.3）                    8；Ethyl cellulose (DS: 1.3) 8;
PVP-K-30                               3；PVP-K-30 3;
羟乙基脲                              1.0；Hydroxyethyl urea 1.0;
1,2-丙二醇-1-单丁醚                      2；1,2-Propanediol-1-monobutyl ether 2;
TS-19                                 0.5；TS-19 0.5;
APG1216                              0.8；APG1216 0.8;
脱氧乙酸钠                            0.1 。Sodium deoxyacetate 0.1.
上述各组份分别计量后，加入溶解容器中，室温下搅拌充分溶解均匀即为本发明所述的一种水溶性的复合改性剂。After the above-mentioned components are separately measured, they are added to a dissolving container, and stirred at room temperature to dissolve thoroughly, which is a water-soluble composite modifier according to the present invention.
上述实施例4制备的水溶性聚乙烯醇无纺布技术指标如表4所示。The technical indicators of the water-soluble polyvinyl alcohol non-woven fabric prepared in Example 4 are shown in Table 4.
表4 Table 4
Figure dest_path_image008
Figure dest_path_image008
由以上数据可知，实施例4制备的水溶性聚乙烯醇无纺布，与空白样对比，不但机械力学性能获得提高，同时也获得了优异的热封性能。From the above data, it can be seen that the water-soluble polyvinyl alcohol non-woven fabric prepared in Example 4, compared with the blank sample, not only improved the mechanical properties, but also obtained excellent heat sealing performance.
以上实施例仅为本发明较优的实施方式，仅用于解释本发明，而非限制本发明，本领域技术人员在未脱离本发明精神实质下所作的改变、替换、修饰等均应属于本发明的保护范围。The above examples are only preferred embodiments of the present invention, and are only used to explain the present invention, but not to limit the present invention. Changes, substitutions, modifications, etc. made by those skilled in the art without departing from the spirit of the present invention shall belong to the present invention. The scope of protection of the invention.

Claims (10)

  1. 一种水溶性聚乙烯醇无纺布的制备方法，其特征在于，包括如下步骤：A preparation method of water-soluble polyvinyl alcohol non-woven fabric is characterized in that it comprises the following steps:
    （1）将湿法纺丝生产的聚乙烯醇纤维经过开松、梳理、铺网后，得到待加工纺布，然后将所述待加工纺布转移至预湿区中，在预湿区中使用复合改性剂对待加工纺布进行双面喷淋处理，得到喷淋后的纺布；(1) The polyvinyl alcohol fiber produced by wet spinning is opened, carded, and laid to obtain the woven fabric to be processed, and then the woven fabric to be processed is transferred to the pre-wet zone, in the pre-wet zone Use the compound modifier to perform double-sided spray treatment on the textile fabric to be processed to obtain the sprayed textile fabric;
    （2）将步骤（1）所述喷淋后的纺布转移至低温干燥区中进行表面干燥，再进行热辊干燥加固处理，定型辊热轧定型，压花，冷却辊冷却，展平收卷得到所述水溶性聚乙烯醇无纺布。(2) Transfer the sprayed woven fabric described in step (1) to a low-temperature drying zone for surface drying, and then carry out a hot roller drying and strengthening treatment, the shaping roller is hot rolled and shaped, embossed, cooled by the cooling roller, and flattened and retracted. The water-soluble polyvinyl alcohol nonwoven fabric is obtained by rolling.
  2. 根据权利要求1所述的水溶性聚乙烯醇无纺布的制备方法，其特征在于，步骤（1）所述聚乙烯醇纤维为0.5-2.0旦，35-78mm的短纤维；以干重计，所述复合改性剂的喷淋量为待加工纺布重量的20wt%-50%。The method for preparing a water-soluble polyvinyl alcohol non-woven fabric according to claim 1, wherein the polyvinyl alcohol fibers in step (1) are short fibers of 0.5-2.0 denier, 35-78 mm; based on dry weight The spray amount of the composite modifier is 20wt%-50% of the weight of the woven fabric to be processed.
  3. 根据权利要求1所述的水溶性聚乙烯醇无纺布的制备方法，其特征在于，步骤（2）所述低温干燥区为四区控温的干燥烘道，所述低温干燥区的温度为60/70/80/80℃；所述热辊干燥加固处理的温度为100-150℃；所述定型辊热轧定型的温度为90-130℃；所述压花的温度为120-160℃；所述冷却辊冷却的温度为20-30℃；所述水溶性聚乙烯醇无纺布的克重GSM为10-100g/m 2。 The method for preparing a water-soluble polyvinyl alcohol non-woven fabric according to claim 1, wherein the low-temperature drying zone in step (2) is a four-zone temperature-controlled drying tunnel, and the temperature of the low-temperature drying zone is 60/70/80/80°C; the temperature of the hot roller drying and strengthening treatment is 100-150°C; the temperature of the hot-rolling and shaping of the shaping roller is 90-130°C; the temperature of the embossing is 120-160°C The cooling temperature of the cooling roll is 20-30°C; the gram weight GSM of the water-soluble polyvinyl alcohol non-woven fabric is 10-100 g/m 2 .
  4. 根据权利要求1所述的水溶性聚乙烯醇无纺布的制备方法，其特征在于，步骤（1）所述复合改性剂的制备，包括：The method for preparing a water-soluble polyvinyl alcohol non-woven fabric according to claim 1, wherein the preparation of the composite modifier in step (1) comprises:
    将水性成膜剂、水性粘结剂、保湿剂、溶纤剂、柔顺剂、基材润湿渗透剂、脱氧乙酸钠及水混合，搅拌均匀，得到所述复合改性剂。The water-based film-forming agent, the water-based binder, the humectant, the cellosolve, the softening agent, the substrate wetting and penetrating agent, the sodium deoxyacetate and the water are mixed, and the mixture is uniformly stirred to obtain the composite modifier.
  5. 根据权利要求4所述的水溶性聚乙烯醇无纺布的制备方法，其特征在于，按照重量份数计，所述复合改性剂，包括如下组分：The method for preparing a water-soluble polyvinyl alcohol non-woven fabric according to claim 4, characterized in that, in parts by weight, the composite modifier comprises the following components:
    水                                   100份；Water 100 copies;
    水性成膜剂                           3-8份；Water-based film-forming agent 3-8 copies;
    水性粘结剂                           0.5-3份；Water-based adhesive 0.5-3 copies;
    保湿剂                               0.3-1.0份；Moisturizer 0.3-1.0 copies;
    溶纤剂                               2-6份；Cellosolve 2-6 copies;
    柔顺剂                               0.1-0.5份；Softener 0.1-0.5 copies;
    基材润湿渗透剂                       0.3-0.8份；Base material wetting and penetrating agent 0.3-0.8 copies;
    脱氧乙酸钠                           0.05-0.1份。Sodium deoxyacetate 0.05-0.1 copies.
  6. 根据权利要求4所述的水溶性聚乙烯醇无纺布的制备方法，其特征在于，所述水性成膜剂的取代度DS为1.0-1.5；所述水性成膜剂为乙基纤维素；所述水性粘结剂为聚乙烯吡咯烷酮；所述水性粘结剂为巴斯夫公司或美国ISP公司生产的PVP-K-12、PVP-K-15、PVP-K-17、PVP-K-30、PVP-K-60中的一种；所述水性粘结剂为工业级、食品级或医药级；所述保湿剂为羟乙基脲；所述溶纤剂为乙基纤维素的助溶剂和辅助成膜剂；所述溶纤剂包括乙二醇单甲醚、乙二醇二甲醚、丙二醇单甲醚、丙二醇乙醚、1,2-丙二醇-1-单丁醚中的一种。The method for preparing a water-soluble polyvinyl alcohol non-woven fabric according to claim 4, wherein the degree of substitution DS of the aqueous film-forming agent is 1.0-1.5; and the aqueous film-forming agent is ethyl cellulose; The water-based binder is polyvinylpyrrolidone; the water-based binder is PVP-K-12, PVP-K-15, PVP-K-17, PVP-K-30, PVP-K-12, PVP-K-15, PVP-K-17, PVP-K-30, manufactured by BASF or American ISP. One of PVP-K-60; the water-based binder is industrial grade, food grade or pharmaceutical grade; the humectant is hydroxyethyl urea; the cellosolve is a cosolvent of ethyl cellulose and Auxiliary film-forming agent; the cellosolve includes one of ethylene glycol monomethyl ether, ethylene glycol dimethyl ether, propylene glycol monomethyl ether, propylene glycol ethyl ether, and 1,2-propylene glycol-1-monobutyl ether.
  7. 根据权利要求4所述的水溶性聚乙烯醇无纺布的制备方法，其特征在于，所述柔顺剂为聚醚改性硅氧烷；所述柔顺剂为有机硅非离子表面活性剂；所述柔顺剂为青岛中宝硅材料科技有限公司生产的204水溶性硅油CGF、204水溶性硅油TS-19中的一种；所述基材润湿渗透剂为烷基糖苷；所述基材润湿渗透剂为葡萄糖和脂肪醇合成的烷基糖苷；所述基材润湿渗透剂为上海发凯化工有限公司或石家庄金莫尔化学品有限公司生产的APG0810、APG1214、APG0814、APG0816及APG1216中的一种。The method for preparing a water-soluble polyvinyl alcohol non-woven fabric according to claim 4, wherein the softening agent is a polyether modified siloxane; the softening agent is a silicone nonionic surfactant; The softening agent is one of 204 water-soluble silicone oil CGF and 204 water-soluble silicone oil TS-19 produced by Qingdao Zhongbao Silicon Material Technology Co., Ltd.; the substrate wetting and penetrating agent is an alkyl glycoside; The wet penetrant is an alkyl glycoside synthesized from glucose and fatty alcohol; the substrate wet penetrant is APG0810, APG1214, APG0814, APG0816 and APG1216 produced by Shanghai Fakai Chemical Co., Ltd. or Shijiazhuang Jinmore Chemical Co., Ltd. Kind of.
  8. 根据权利要求4所述的水溶性聚乙烯醇无纺布的制备方法，其特征在于，所述脱氧乙酸钠为食品级防霉剂；所述水为工业纯净水；所述搅拌均匀的温度为23℃。The method for preparing a water-soluble polyvinyl alcohol non-woven fabric according to claim 4, wherein the sodium deoxyacetate is a food-grade antifungal agent; the water is industrially purified water; and the uniformly stirred temperature is 23°C.
  9. 一种由权利要求1-8任一项所述的制备方法制得的水溶性聚乙烯醇无纺布。A water-soluble polyvinyl alcohol non-woven fabric prepared by the preparation method of any one of claims 1-8.
  10. 权利要求9所述的水溶性聚乙烯醇无纺布在自动化机械制造各类超声波焊接封口、封边、制袋的各类产品中的应用。The application of the water-soluble polyvinyl alcohol non-woven fabric of claim 9 in the automatic mechanical manufacturing of various products such as ultrasonic welding, sealing, edge sealing, and bag making.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101525811A (en) * 2009-04-14 2009-09-09 李铁辉 Soluble non-woven fabrics at low temperature of 40 DEG C and manufacture method thereof
KR20100138503A (en) * 2009-06-25 2010-12-31 이화여자대학교 산학협력단 Improved preparation method of pva nanofiber membrane using electrospinning
CN109295726A (en) * 2018-09-28 2019-02-01 华南理工大学 A kind of preparation method and application of polyvinyl alcohol non-woven fabrics finishing agent
CN109881285A (en) * 2019-01-24 2019-06-14 安徽鼎洋生物基材料有限公司 A kind of biodegrade PVA melt spinning resin and preparation method thereof
CN110079891A (en) * 2019-05-05 2019-08-02 苏州回蓝环保科技有限公司 A kind of biodegradable PVA melt spinning resin and its application
CN110273299A (en) * 2019-06-29 2019-09-24 华南理工大学 A kind of polyvinyl alcohol non-woven fabrics and preparation method thereof
CN110923949A (en) * 2019-11-13 2020-03-27 华南理工大学 Water-soluble polyvinyl alcohol non-woven fabric and preparation method and application thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3426703B2 (en) * 1994-06-13 2003-07-14 株式会社クラレ Low-temperature water-soluble nonwoven fabric and method for producing the same
CN108221386B (en) * 2017-12-29 2020-01-10 广州丽特新材科技有限公司 Padding finishing method of polyvinyl alcohol non-woven fabric
CN108729246B (en) * 2018-05-22 2020-08-28 广州丽特新材科技有限公司 Preparation method of polyvinyl alcohol non-woven fabric coating composite material

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101525811A (en) * 2009-04-14 2009-09-09 李铁辉 Soluble non-woven fabrics at low temperature of 40 DEG C and manufacture method thereof
KR20100138503A (en) * 2009-06-25 2010-12-31 이화여자대학교 산학협력단 Improved preparation method of pva nanofiber membrane using electrospinning
CN109295726A (en) * 2018-09-28 2019-02-01 华南理工大学 A kind of preparation method and application of polyvinyl alcohol non-woven fabrics finishing agent
CN109881285A (en) * 2019-01-24 2019-06-14 安徽鼎洋生物基材料有限公司 A kind of biodegrade PVA melt spinning resin and preparation method thereof
CN110079891A (en) * 2019-05-05 2019-08-02 苏州回蓝环保科技有限公司 A kind of biodegradable PVA melt spinning resin and its application
CN110273299A (en) * 2019-06-29 2019-09-24 华南理工大学 A kind of polyvinyl alcohol non-woven fabrics and preparation method thereof
CN110923949A (en) * 2019-11-13 2020-03-27 华南理工大学 Water-soluble polyvinyl alcohol non-woven fabric and preparation method and application thereof

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