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CN117661195A - Non-woven shopping bag manufacturing process - Google Patents

Non-woven shopping bag manufacturing process Download PDF

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Publication number
CN117661195A
CN117661195A CN202410117686.6A CN202410117686A CN117661195A CN 117661195 A CN117661195 A CN 117661195A CN 202410117686 A CN202410117686 A CN 202410117686A CN 117661195 A CN117661195 A CN 117661195A
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CN
China
Prior art keywords
spinning solution
polyvinyl alcohol
woven
shopping bag
manufacturing process
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202410117686.6A
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Chinese (zh)
Inventor
郭金钻
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen Yingchuang Nonwoven Products Co ltd
Original Assignee
Xiamen Yingchuang Nonwoven Products Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xiamen Yingchuang Nonwoven Products Co ltd filed Critical Xiamen Yingchuang Nonwoven Products Co ltd
Priority to CN202410117686.6A priority Critical patent/CN117661195A/en
Publication of CN117661195A publication Critical patent/CN117661195A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • D04H1/558—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 in combination with mechanical or physical treatments other than embossing
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/11—Flash-spinning
    • 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
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4282—Addition polymers
    • D04H1/4291—Olefin series
    • 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
    • D06M15/19—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
    • D06M15/285—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acid amides or imides
    • 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
    • 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
    • D06M15/53—Polyethers
    • 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
    • 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
    • D10B2321/021—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene
    • 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
    • D10B2401/04—Heat-responsive characteristics
    • D10B2401/041—Heat-responsive characteristics thermoplastic; thermosetting

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

The invention discloses a manufacturing process of a non-woven shopping bag, which comprises the following steps of: s1: preparing spinning solution by taking high-density polyethylene, difluoro-chloromethane and tetrafluoro-dichloroethane as raw materials; s2: the spinning solution obtained in the step S1 is prepared into polyethylene non-woven fabric through a flash spinning method; s3: padding or coating sizing finishing is carried out on the polyvinyl alcohol non-woven fabric by using a sizing finishing agent; and carrying out heat sealing on the polyvinyl alcohol non-woven fabric subjected to padding or coating and sizing treatment to prepare a bag, thus obtaining the water-soluble polyvinyl alcohol non-woven fabric shopping bag. The non-woven shopping bag manufacturing process enables the non-woven shopping bag to be manufactured into shopping bags with various sizes and specifications, and enables the shopping bags to have good physical properties and bearing capacity.

Description

Non-woven shopping bag manufacturing process
Technical Field
The invention relates to the technical field of shopping bag production, in particular to a non-woven fabric shopping bag manufacturing process.
Background
Polyvinyl alcohol (PVA) has been rapidly developed and used in many fields in recent years as an environment-friendly material. China has abundant raw material sources and application markets as vinylon productivity, and in the former stage of vinylon production, polyvinyl alcohol (PVA) is directly used for producing polyvinyl alcohol non-woven fabrics without being subjected to acetal treatment after being subjected to wet spinning coagulation bath molding, and is also a field of rapid development and application in recent years. Because of their water-solubility and environmental friendliness, polyvinyl alcohol nonwoven fabrics have begun to replace nonwoven fabrics made from plastic synthetic resins in many fields. Particularly in the application field of disposable use, can replace the traditional plastic synthetic resin non-woven fabrics, so that the product has better environmental protection.
The melting point of the polyvinyl alcohol is 220-230 ℃, but under the heating condition, the polyvinyl alcohol is unstable at 180 ℃ and is decomposed, and along with the continuous rising of the temperature, the decomposition is aggravated and the crosslinking is generated; therefore, pure polyvinyl alcohol is a non-woven fabric prepared from wet-spun polyvinyl alcohol fibers without thermoplastic properties, and it is one of the greatest drawbacks of polyvinyl alcohol non-woven fabrics. The nonwoven fabric prepared from other common synthetic plastic resins cannot have excellent heat sealing performance, so that the application field of the nonwoven fabric is limited to a certain extent, such as the secondary processing of the nonwoven fabric: sealing edges, sealing, making bags and the like. Only conventional manual stitching can be performed rather than by the process of an automated heat sealing machine. Thus, the processing efficiency of the polyvinyl alcohol non-woven fabric is low, and the cost is greatly increased.
It is necessary to design a non-woven shopping bag manufacturing process against the above problems.
Disclosure of Invention
The invention aims to provide a manufacturing process of a non-woven shopping bag so as to solve the technical problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the manufacturing process of the non-woven shopping bag comprises the following steps:
s1: preparing spinning solution by taking high-density polyethylene, difluoro-chloromethane and tetrafluoro-dichloroethane as raw materials;
s2: the spinning solution obtained in the step S1 is prepared into polyethylene non-woven fabric through a flash spinning method;
s3: padding or coating sizing finishing is carried out on the polyvinyl alcohol non-woven fabric by using a sizing finishing agent; and carrying out heat sealing on the polyvinyl alcohol non-woven fabric subjected to padding or coating and sizing treatment to prepare a bag, thus obtaining the water-soluble polyvinyl alcohol non-woven fabric shopping bag.
Preferably, in step S1, the specific method for preparing the spinning solution is as follows: firstly, adding high-density polyethylene into a high-pressure reaction kettle, and heating to 130-150 ℃; after the temperature in the autoclave is stable, adding a mixture of difluoro-chloromethane and tetrafluoro-dichloroethane according to the proportion of raw materials, and continuously heating to 180 ℃; after the temperature is stabilized at 155 ℃, nitrogen is introduced to pressurize to 4-9 MPa, the temperature is raised to 160-250 ℃ at the same time, and the mixture is stirred for 1.8-2.3 h, and the rotating speed is 55-90 rpm until the high-density polyethylene is dissolved in the mixed solvent to form spinning solution.
Preferably, in the step S1, the high-density polyethylene accounts for 10% -18% of the mass of the spinning solution, the difluoromethane accounts for 50% -70% of the mass of the spinning solution, and the tetrafluoro dichloroethane accounts for 16% -20% of the mass of the spinning solution.
Preferably, in step S2, the specific steps for preparing the polyethylene nonwoven fabric by the flash spinning method are as follows: the spinning solution is subjected to preliminary decompression to generate slight phase separation, and is pumped to a spinneret by a pump, and when the spinneret is sprayed out, the spinning solution is further decompressed to generate further phase separation; the spinning solution is sprayed out, the solvent of the spinning solution volatilizes rapidly and instantaneously, the polymer of the spinning solution cools and solidifies rapidly to form fiber bundles, high-pressure air with the fiber bundles is guided to an air amplifier by a deflector, and the air flow rate is as follows: 5000m/min; in the air amplifier, high-pressure air is used for carrying out secondary stretching on the fiber bundles, and uniformly opening the fiber bundles to form a netlike fluffy structure, settling the opened fiber bundles on a collecting belt to form a fiber net, and carrying out primary hot rolling on the fiber net through a roller to form the non-woven fabric.
Preferably, in step S3, the raw material components for preparing the sizing finishing agent include the following components in parts by weight: 100 parts of water, 10-20 parts of polyvinyl alcohol PVA, 3-8 parts of polyol copolyether, 1-3 parts of polyacrylamide hydrolysate, 2-5 parts of polyol, 1-3 parts of inorganic filler, 1-3 parts of urea, 0.1-0.3 part of wetting agent, 0.2-0.5 part of imidazolidinyl urea and 0.1-0.3 part of parahydroxybenzoate.
Preferably, the preparation of the sizing finishing agent comprises the following specific steps:
1) Weighing the raw material components, mixing into a mixed solution, heating to 95 ℃ under stirring at the speed of 50 rpm, and preserving heat for 2-4 hours under stirring at the speed of 50 rpm;
2) And (3) preserving the temperature of the mixed solution at 90 ℃ for 30 minutes, stopping heating, and cooling to room temperature to obtain the sizing finishing agent.
Preferably, the polyvinyl alcohol refers to a completely or partially alcoholyzed polyvinyl alcohol having a polymerization degree of 500 to 2200; the hydrolysis degree of the polyacrylamide hydrolysate is more than or equal to 20%; the polyol has water solubility; the inorganic filler is an inorganic inert powder material with fineness more than or equal to 3000 meshes.
Compared with the prior art, the invention has the beneficial effects that: the manufacturing process of the non-woven shopping bag,
the invention has the heat sealing performance of secondary processing, is beneficial to realizing the processes of edge sealing, continuous bag making and the like of an automatic machine, thereby improving the processing efficiency of products and reducing the cost, the fiber nodes of the polyvinyl alcohol non-woven fabric are firmer after the sizing finishing agent is padded and finished or coated, so that the mechanical performance of the polyvinyl alcohol non-woven fabric is improved, the breaking elongation of the polyvinyl alcohol non-woven fabric is improved after the sizing finishing agent is padded and finished or coated, and the polyvinyl alcohol non-woven fabric is enabled to obtain softer and more comfortable handfeel.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a technical scheme that:
the manufacturing process of the non-woven shopping bag comprises the following steps:
s1: the preparation method of the spinning solution comprises the following steps of: firstly, adding high-density polyethylene into a high-pressure reaction kettle, and heating to 130-150 ℃; after the temperature in the autoclave is stable, adding a mixture of difluoro-chloromethane and tetrafluoro-dichloroethane according to the proportion of raw materials, and continuously heating to 180 ℃; after the temperature is stabilized at 155 ℃, introducing nitrogen to pressurize to 4-9 MPa, heating to 160-250 ℃ at the same time, stirring for 1.8-2.3 h, and rotating at 55-90 rpm until high-density polyethylene is dissolved in a mixed solvent to form spinning solution, wherein the high-density polyethylene accounts for 10-18% of the mass of the spinning solution, difluoromethane accounts for 50-70% of the mass of the spinning solution, and tetrafluoro dichloroethane accounts for 16-20% of the mass of the spinning solution;
s2: and (3) forming the spinning solution obtained in the step (S1) into a polyethylene non-woven fabric through a flash spinning method, wherein the specific steps of preparing the polyethylene non-woven fabric through the flash spinning method are as follows: the spinning solution is subjected to preliminary decompression to generate slight phase separation, and is pumped to a spinneret by a pump, and when the spinneret is sprayed out, the spinning solution is further decompressed to generate further phase separation; the spinning solution is sprayed out, the solvent of the spinning solution volatilizes rapidly and instantaneously, the polymer of the spinning solution cools and solidifies rapidly to form fiber bundles, high-pressure air with the fiber bundles is guided to an air amplifier by a deflector, and the air flow rate is as follows: 5000m/min; in the air amplifier, the high-pressure air carries out secondary stretching on the fiber bundles, and uniformly opens the fiber bundles to form a netlike fluffy structure, the fiber bundles after opening the fiber bundles are settled on an accumulation belt to form a fiber net, and the fiber net is subjected to primary hot rolling by a roller to form a non-woven fabric;
s3: padding or coating sizing finishing is carried out on the polyvinyl alcohol non-woven fabric by using a sizing finishing agent; carrying out heat sealing on the polyvinyl alcohol non-woven fabric subjected to padding or coating sizing finishing to prepare a bag, and preparing the water-soluble polyvinyl alcohol non-woven fabric shopping bag, wherein the raw material components for preparing the sizing finishing agent comprise the following components in parts by weight: 100 parts of water, 10-20 parts of polyvinyl alcohol PVA, 3-8 parts of polyol copolyether, 1-3 parts of polyacrylamide hydrolysate, 2-5 parts of polyol, 1-3 parts of inorganic filler, 1-3 parts of urea, 0.1-0.3 part of wetting agent, 0.2-0.5 part of imidazolidinyl urea and 0.1-0.3 part of parahydroxybenzoate, wherein the preparation of the sizing finishing agent comprises the following specific steps:
1) Weighing the raw material components, mixing into a mixed solution, heating to 95 ℃ under stirring at the speed of 50 rpm, and preserving heat for 2-4 hours under stirring at the speed of 50 rpm;
2) The mixed solution is kept at 90 ℃ for 30 minutes, then heating is stopped, and the mixed solution is cooled to room temperature to prepare the sizing finishing agent, wherein the polyvinyl alcohol refers to completely alcoholysis polyvinyl alcohol or partially alcoholysis polyvinyl alcohol with the polymerization degree of 500-2200; the hydrolysis degree of the polyacrylamide hydrolysate is more than or equal to 20%; the polyol has water solubility; the inorganic filler is an inorganic inert powder material with fineness more than or equal to 3000 meshes.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The manufacturing process of the non-woven shopping bag is characterized by comprising the following steps of: the manufacturing process comprises the following steps:
s1: preparing spinning solution by taking high-density polyethylene, difluoro-chloromethane and tetrafluoro-dichloroethane as raw materials;
s2: the spinning solution obtained in the step S1 is prepared into polyethylene non-woven fabric through a flash spinning method;
s3: padding or coating sizing finishing is carried out on the polyvinyl alcohol non-woven fabric by using a sizing finishing agent; and carrying out heat sealing on the polyvinyl alcohol non-woven fabric subjected to padding or coating and sizing treatment to prepare a bag, thus obtaining the water-soluble polyvinyl alcohol non-woven fabric shopping bag.
2. The non-woven shopping bag manufacturing process according to claim 1, wherein: in step S1, the specific method for preparing the spinning solution is as follows: firstly, adding high-density polyethylene into a high-pressure reaction kettle, and heating to 130-150 ℃; after the temperature in the autoclave is stable, adding a mixture of difluoro-chloromethane and tetrafluoro-dichloroethane according to the proportion of raw materials, and continuously heating to 180 ℃; after the temperature is stabilized at 155 ℃, nitrogen is introduced to pressurize to 4-9 MPa, the temperature is raised to 160-250 ℃ at the same time, and the mixture is stirred for 1.8-2.3 h, and the rotating speed is 55-90 rpm until the high-density polyethylene is dissolved in the mixed solvent to form spinning solution.
3. The non-woven shopping bag manufacturing process according to claim 1, wherein: in the step S1, the high-density polyethylene accounts for 10-18% of the mass of the spinning solution, the difluoro-chloromethane accounts for 50-70% of the mass of the spinning solution, and the tetrafluoro-dichloroethane accounts for 16-20% of the mass of the spinning solution.
4. The non-woven shopping bag manufacturing process according to claim 1, wherein: in the step S2, the specific steps for preparing the polyethylene non-woven fabric by the flash spinning method are as follows: the spinning solution is subjected to preliminary decompression to generate slight phase separation, and is pumped to a spinneret by a pump, and when the spinneret is sprayed out, the spinning solution is further decompressed to generate further phase separation; the spinning solution is sprayed out, the solvent of the spinning solution volatilizes rapidly and instantaneously, the polymer of the spinning solution cools and solidifies rapidly to form fiber bundles, high-pressure air with the fiber bundles is guided to an air amplifier by a deflector, and the air flow rate is as follows: 5000m/min; in the air amplifier, high-pressure air is used for carrying out secondary stretching on the fiber bundles, and uniformly opening the fiber bundles to form a netlike fluffy structure, settling the opened fiber bundles on a collecting belt to form a fiber net, and carrying out primary hot rolling on the fiber net through a roller to form the non-woven fabric.
5. The non-woven shopping bag manufacturing process according to claim 1, wherein: in step S3, the raw material components for preparing the sizing finishing agent include the following components in parts by weight: 100 parts of water, 10-20 parts of polyvinyl alcohol PVA, 3-8 parts of polyol copolyether, 1-3 parts of polyacrylamide hydrolysate, 2-5 parts of polyol, 1-3 parts of inorganic filler, 1-3 parts of urea, 0.1-0.3 part of wetting agent, 0.2-0.5 part of imidazolidinyl urea and 0.1-0.3 part of parahydroxybenzoate.
6. The non-woven shopping bag manufacturing process according to claim 5, wherein: the preparation of the sizing finishing agent comprises the following specific steps:
1) Weighing the raw material components, mixing into a mixed solution, heating to 95 ℃ under stirring at the speed of 50 rpm, and preserving heat for 2-4 hours under stirring at the speed of 50 rpm;
2) And (3) preserving the temperature of the mixed solution at 90 ℃ for 30 minutes, stopping heating, and cooling to room temperature to obtain the sizing finishing agent.
7. The non-woven shopping bag manufacturing process according to claim 5, wherein: the polyvinyl alcohol refers to completely alcoholyzed polyvinyl alcohol or partially alcoholyzed polyvinyl alcohol with polymerization degree of 500-2200; the hydrolysis degree of the polyacrylamide hydrolysate is more than or equal to 20%; the polyol has water solubility; the inorganic filler is an inorganic inert powder material with fineness more than or equal to 3000 meshes.
CN202410117686.6A 2024-01-29 2024-01-29 Non-woven shopping bag manufacturing process Pending CN117661195A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410117686.6A CN117661195A (en) 2024-01-29 2024-01-29 Non-woven shopping bag manufacturing process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410117686.6A CN117661195A (en) 2024-01-29 2024-01-29 Non-woven shopping bag manufacturing process

Publications (1)

Publication Number Publication Date
CN117661195A true CN117661195A (en) 2024-03-08

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Country Status (1)

Country Link
CN (1) CN117661195A (en)

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