A method of spinning a high strength paper yarn

Abstract

A spinning method for high-strength paper yarn includes the following steps: Step 1; paper strip reinforcement and humidification; passing a slender paper strip with a width of 1-10mm through a closed reinforcement and humidification device; the closed reinforcement and humidification device includes a machine housing, the machine housing having an inlet for the paper strip to be processed to enter and an outlet for the processed paper strip to exit, the machine housing is equipped with an adjustable speed and rotatable paper feeding roller, a liquid storage tank, an atomizing nozzle for spraying the liquid in the liquid storage tank, and a heating device for regulating the temperature inside the machine housing; the adjustable speed paper feeding roller guides the paper strip in an overfeed manner, with an overfeed rate of 0.1-10%; the liquid storage tank contains reinforcement liquid; the atomizing nozzle is fixedly installed in the machine housing, with one nozzle at the top and one at the bottom of the machine housing, spraying the reinforcement liquid onto the paper strip through the atomizing nozzle, with a spray rate of 40-80cc / min; the heating device regulates the temperature inside the machine housing.

Description

Technical Field

[0001] This invention relates to the field of textile yarn processing technology for environmentally friendly materials, and in particular to a spinning method for high-strength, multifunctional paper yarn. Background Technology

[0002] Paper yarn is a filament yarn made by cutting paper into thin strips and then twisting them. Its main material is lignocellulose, and it is characterized by its light weight, fluffy texture, low shrinkage, low pilling rate, good moisture absorption, and breathability. Under the "dual carbon" (carbon dioxide, carbon sequestration, and carbon emissions) background, it has attracted attention from the fashion textile industry as an environmentally friendly and high-value-added material. However, paper yarn exhibits unstable twisting, poor strength, and low elongation during its preparation. To prevent yarn breakage during preparation and subsequent weaving, existing technologies often add paper strengthening agents to the pulp raw materials during paper production. However, this makes the resulting paper yarn feel rough and stiff, and reduces its flexibility. Alternatively, there are methods to combine paper yarn with other yarns or covered yarns to enhance yarn strength, but this comes at the cost of sacrificing some of the properties of the 100% paper yarn content. Summary of the Invention

[0003] This invention addresses the shortcomings of existing technologies by providing a spinning method for high-strength, multifunctional paper yarn, which effectively solves the problems existing in the prior art.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: A spinning method for high-strength paper yarn, comprising the following steps: Step 1; paper strip reinforcement and humidification; passing a slender paper strip with a width of 1-10mm through a closed reinforcement and humidification device; the closed reinforcement and humidification device includes a housing, the housing having an inlet for the paper strip to be processed to enter and an outlet for the processed paper strip to exit, the housing being equipped with an adjustable-speed and rotatable paper feeding roller, a liquid storage tank, an atomizing nozzle for spraying the liquid in the liquid storage tank, and a heating device for regulating the temperature inside the housing; the adjustable-speed paper feeding roller causes the paper strip to be overfed... The process involves several steps: 1) Introducing the reinforcing liquid using a method with an overfeed rate of 0.1-10%; 2) Filling the storage tank with reinforcing liquid; 3) Fixedly mounted atomizing nozzles on the machine housing, one on the top and one on the bottom, spraying the reinforcing liquid onto the paper strips at a spray rate of 40-80 cc / min; 4) Heating equipment regulating the temperature inside the machine housing; 5) An adjustable-speed winding roller is located adjacent to the outlet of the sealed reinforcing and humidifying device, rotating to pull and collect the output paper strips; 6) Spinning: The paper yarn processed in step 1 is directly processed by a doubling machine, which is located at the rear end of the winding roller's operating sequence, resulting in a paper yarn with a fineness of 8-80 tex.

[0005] In step 1 above, the slender paper strip is made by cutting paper.

[0006] In step 1 above, 12-96 thin paper strips are connected in parallel; the number of paper strips in step 1 corresponds to the number of yarn heads in step 2; the paper strips are in a taut state in the sealed reinforcing humidification device.

[0007] In step 1 above, the temperature inside the heating chamber of the heating equipment is 20-60℃, the humidity inside the chamber is 80-120%RH, and the paper strip is humidified inside the chamber for 24-72 hours.

[0008] In step 2 above, the rotation speed of the yarn dotting machine is 200-500 rpm.

[0009] The reinforcing liquid comprises 80-90 parts by weight of epoxy resin, 5-10 parts by weight of anhydrous ethanol, and 5-10 parts by weight of curing agent. The reinforcing liquid is prepared by mixing and stirring the epoxy resin, anhydrous ethanol, and curing agent.

[0010] The epoxy resin is an epoxy resin containing 45-60 parts by weight of epoxy groups per 100 parts by weight of resin; the curing agent is any one of primary amine, polythiol, polyphenol, and low molecular weight polyamide.

[0011] The reinforcing liquid contains a functional finishing liquid, which includes any one or more of the following: softening agent, flame retardant agent, water repellent agent, wrinkle-resistant agent, and antibacterial agent.

[0012] The advantages of this invention compared to existing technologies are as follows:

[0013] The paper required for this invention is ordinary paper produced using conventional technology; even paper reprocessed from recycled waste paper can be used. The required materials are widely available and inexpensive. The atomization-enhanced humidification-yarn-dotting combined method employed in this invention allows for flexible and effective use of finishing solutions, featuring high efficiency, short process, simple operation, and clean production, enabling continuous production. This invention allows for the selection of appropriate finishing solutions based on the different performance requirements of textile materials. By impregnating with a multifunctional finishing solution, multifunctional properties are imparted to the paper yarn, improving its performance in everyday wear. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1This is a flowchart of a spinning method for high-strength, multifunctional paper yarn according to an embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the structure of the sealed enhanced humidification device described in this invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the following embodiments are provided to further illustrate this invention in detail.

[0018] Example 1

[0019] A method for spinning high-strength paper yarn includes the following steps:

[0020] Step 1; Paper strip enhanced humidification; Pass a 1mm wide thin paper strip through a sealed enhanced humidification device;

[0021] The sealed enhanced humidification device includes a chassis with an inlet for the paper strips to be processed and an outlet for the processed paper strips. The chassis is equipped with an adjustable-speed, rotatable paper feed roller, a liquid storage tank, atomizing nozzles for spraying the liquid from the storage tank, and a heating device for regulating the temperature inside the chassis. The adjustable-speed paper feed roller guides the paper strips in an overfeed manner with an overfeed rate of 0.1%. The liquid storage tank contains enhanced liquid. The atomizing nozzles are fixedly mounted on the chassis, with one nozzle at the top and one at the bottom, spraying the enhanced liquid onto the paper strips at a spray rate of 40 cc / min. The heating device regulates the temperature inside the chassis.

[0022] In step 1 above, the temperature inside the heating chamber of the heating equipment is 20°C, and the humidity inside the chamber is controlled at 80% RH for 24-72 hours. An adjustable-speed winding roller is provided adjacent to the outlet of the sealed enhanced humidification device; the winding roller rotates to pull and collect the output paper strips.

[0023] Step 2; Spinning; The paper yarn processed in Step 1 is directly processed by a doubling machine, which is located at the rear end of the winding roller operation sequence. The resulting paper yarn has a fineness of 8 tex. As a preferred embodiment, in Step 2 above, the rotation speed of the doubling machine is 200 rpm.

[0024] In a preferred embodiment, the slender paper strip in step 1 above is made by cutting paper.

[0025] In a preferred embodiment, in step 1 above, 12 thin paper strips are connected in parallel; the number of paper strips in step 1 corresponds to the number of yarn ends in step 2; the paper strips are in a taut state in the sealed enhanced humidification device.

[0026] In a preferred embodiment, the reinforcing liquid comprises 80 parts by weight of epoxy resin, 5 parts by weight of anhydrous ethanol, and 5 parts by weight of curing agent. The reinforcing liquid is prepared by mixing and stirring the epoxy resin, anhydrous ethanol, and curing agent.

[0027] In a preferred embodiment, the epoxy resin is an epoxy resin containing 45 parts by mass of epoxy groups per 100 parts by mass of resin; the curing agent is a primary amine.

[0028] In a preferred embodiment, a functional finishing liquid is added to the reinforcing liquid, which includes a softening agent and a flame retardant.

[0029] Preferably, in this embodiment, the softening finishing liquid comprises 3 parts by weight of dimethylsiloxane mixed cyclic compound, 3 parts by weight of NB-(aminoethyl)-γ-aminolactone dimethoxysilane mixed into a silicone crude oil complex, 2 parts by weight of fatty alcohol polyoxyethylene ether, and 95 parts by weight of deionized water. The above materials are mixed and stirred evenly.

[0030] Example 2

[0031] A method for spinning high-strength paper yarn includes the following steps:

[0032] Step 1; Paper strip enhanced humidification; Pass a 5mm wide thin paper strip through a sealed enhanced humidification device;

[0033] The sealed enhanced humidification device includes a chassis with an inlet for the paper strips to be processed and an outlet for the processed paper strips. The chassis is equipped with an adjustable-speed, rotatable paper feed roller, a liquid storage tank, atomizing nozzles for spraying the liquid from the storage tank, and a heating device for regulating the temperature inside the chassis. The adjustable-speed paper feed roller guides the paper strips in an overfeed manner with an overfeed rate of 1%. The liquid storage tank contains enhanced liquid. The atomizing nozzles are fixedly mounted on the chassis, with one nozzle at the top and one at the bottom, spraying the enhanced liquid onto the paper strips at a spray rate of 60 cc / min. The heating device regulates the temperature inside the chassis.

[0034] In step 1 above, the temperature inside the heating chamber of the heating equipment is 30°C, and the humidity inside the chamber is controlled at 90% RH for 48 hours. An adjustable-speed winding roller is provided adjacent to the outlet of the sealed enhanced humidification device; the winding roller rotates to pull and collect the output paper strips.

[0035] Step 2; Spinning; The paper yarn processed in Step 1 is directly processed by a doubling machine, which is located at the rear end of the winding roller operation sequence. The resulting paper yarn has a fineness of 35 tex. As a preferred embodiment, in Step 2 above, the rotation speed of the doubling machine is 300 rpm.

[0036] In a preferred embodiment, the slender paper strip in step 1 above is made by cutting paper.

[0037] In a preferred embodiment, in step 1 above, 32 thin paper strips are connected in parallel; the number of paper strips in step 1 corresponds to the number of yarn ends in step 2; the paper strips are in a taut state in the sealed enhanced humidification device.

[0038] In a preferred embodiment, the reinforcing liquid comprises 86 parts by weight of epoxy resin, 6 parts by weight of anhydrous ethanol, and 6 parts by weight of curing agent. The reinforcing liquid is prepared by mixing and stirring the epoxy resin, anhydrous ethanol, and curing agent.

[0039] In a preferred embodiment, the epoxy resin is an epoxy resin containing 50 parts by mass of epoxy groups per 100 parts by mass of resin; the curing agent is a polythiol.

[0040] In a preferred embodiment, a functional finishing liquid is added to the reinforcing liquid, which includes a water-repellent finishing agent and an anti-wrinkle finishing agent.

[0041] Preferably, in this embodiment, the softening finishing liquid comprises 3 parts by weight of dimethylsiloxane mixed cyclic compound, 4 parts by weight of NB-(aminoethyl)-γ-aminolactone dimethoxysilane mixed into a silicone crude oil complex, 3 parts by weight of fatty alcohol polyoxyethylene ether, and 96 parts by weight of deionized water. The above materials are mixed and stirred evenly.

[0042] Example 3

[0043] A method for spinning high-strength paper yarn includes the following steps:

[0044] Step 1; Paper strip enhanced humidification; Pass a 10mm wide thin paper strip through a sealed enhanced humidification device;

[0045] The sealed enhanced humidification device includes a chassis with an inlet for the paper strips to be processed and an outlet for the processed paper strips to be output. The chassis is equipped with an adjustable-speed, rotatable paper feed roller, a liquid storage tank, atomizing nozzles for spraying the liquid in the storage tank, and a heating device for regulating the temperature inside the chassis. The adjustable-speed paper feed roller guides the paper strips in an overfeed manner with an overfeed rate of 10%. The liquid storage tank contains enhanced liquid. The atomizing nozzles are fixedly mounted on the chassis, with one nozzle at the top and one at the bottom, spraying the enhanced liquid onto the paper strips at a spray rate of 80cc / min. The heating device regulates the temperature inside the chassis.

[0046] In step 1 above, the temperature inside the heating chamber of the heating equipment is 60°C, and the humidity inside the chamber is controlled at 120%RH for 72 hours. An adjustable-speed winding roller is provided adjacent to the outlet of the sealed enhanced humidification device; the winding roller rotates to pull and collect the output paper strips.

[0047] Step 2; Spinning; The paper yarn processed in Step 1 is directly processed by a doubling machine, which is located at the rear end of the winding roller operation sequence. The resulting paper yarn has a fineness of 80 tex. As a preferred embodiment, in Step 2 above, the rotation speed of the doubling machine is 500 rpm.

[0048] In a preferred embodiment, the slender paper strip in step 1 above is made by cutting paper.

[0049] In a preferred embodiment, in step 1 above, 32 thin paper strips are connected in parallel; the number of paper strips in step 1 corresponds to the number of yarn ends in step 2; the paper strips are in a taut state in the sealed enhanced humidification device.

[0050] In a preferred embodiment, the reinforcing liquid comprises 90 parts by weight of epoxy resin, 10 parts by weight of anhydrous ethanol, and 10 parts by weight of curing agent. The reinforcing liquid is prepared by mixing and stirring the epoxy resin, anhydrous ethanol, and curing agent.

[0051] In a preferred embodiment, the epoxy resin is an epoxy resin containing 60 parts by mass of epoxy groups per 100 parts by mass of resin; the curing agent is a polyphenol.

[0052] In a preferred embodiment, a functional finishing liquid is added to the reinforcing liquid, which includes a water-repellent finishing agent and an anti-wrinkle finishing agent.

[0053] Preferably, in this embodiment, the softening finishing liquid comprises 3 parts by weight of dimethylsiloxane mixed cyclic compound, 4 parts by weight of NB-(aminoethyl)-γ-aminolactone dimethoxysilane mixed into a silicone crude oil complex, 3 parts by weight of fatty alcohol polyoxyethylene ether, and 96 parts by weight of deionized water. The above materials are mixed and stirred evenly.

[0054] Example 4

[0055] A method for spinning high-strength paper yarn includes the following steps:

[0056] Step 1; Paper strip enhanced humidification; Pass a 6mm wide thin paper strip through a sealed enhanced humidification device;

[0057] The sealed enhanced humidification device includes a chassis with an inlet for the paper strips to be processed and an outlet for the processed paper strips to be output. The chassis is equipped with an adjustable-speed, rotatable paper feed roller, a liquid storage tank, atomizing nozzles for spraying the liquid in the storage tank, and a heating device for regulating the temperature inside the chassis. The adjustable-speed paper feed roller guides the paper strips in an overfeed manner with an overfeed rate of 8%. The liquid storage tank contains enhanced liquid. The atomizing nozzles are fixedly mounted on the chassis, with one nozzle at the top and one at the bottom, spraying the enhanced liquid onto the paper strips at a spray rate of 70 cc / min. The heating device regulates the temperature inside the chassis.

[0058] In step 1 above, the temperature inside the heating chamber of the heating equipment is 55°C, and the humidity inside the chamber is controlled at 110%RH for 66 hours. An adjustable-speed winding roller is provided adjacent to the outlet of the sealed enhanced humidification device; the winding roller rotates to pull and collect the output paper strips.

[0059] Step 2; Spinning; The paper yarn processed in Step 1 is directly processed by a doubling machine, which is located at the rear end of the winding roller operation sequence. The resulting paper yarn has a fineness of 80 tex. As a preferred embodiment, in Step 2 above, the rotation speed of the doubling machine is 400 rpm.

[0060] In a preferred embodiment, the slender paper strip in step 1 above is made by cutting paper.

[0061] In a preferred embodiment, in step 1 above, 32 thin paper strips are connected in parallel; the number of paper strips in step 1 corresponds to the number of yarn ends in step 2; the paper strips are in a taut state in the sealed enhanced humidification device.

[0062] In a preferred embodiment, the reinforcing liquid comprises 88 parts by weight of epoxy resin, 8 parts by weight of anhydrous ethanol, and 8 parts by weight of curing agent. The reinforcing liquid is prepared by mixing and stirring the epoxy resin, anhydrous ethanol, and curing agent.

[0063] In a preferred embodiment, the epoxy resin is an epoxy resin containing 55 parts by mass of epoxy groups per 100 parts by mass of resin; the curing agent is a low molecular weight polyamide.

[0064] In a preferred embodiment, a functional finishing liquid is added to the reinforcing liquid, which includes a water-repellent finishing agent and an anti-wrinkle finishing agent.

[0065] Preferably, in this embodiment, the softening finishing liquid comprises 3 parts by weight of dimethylsiloxane mixed cyclic compound, 4 parts by weight of NB-(aminoethyl)-γ-aminolactone dimethoxysilane mixed into a silicone crude oil complex, 3 parts by weight of fatty alcohol polyoxyethylene ether, and 96 parts by weight of deionized water. The above materials are mixed and stirred evenly.

[0066] The yarns in the above embodiments were tested, and the results are as follows:

[0067] The yarn's evenness, strength, and elongation were evaluated according to GB / T 3292.1-2008 "Test Method for Yarn Unevenness" and GB / T 3916-2013 "Test Standard for Yarn Breaking Strength and Elongation at Break". In the softness performance analysis, 0 points indicates that the yarn is very stiff and difficult to bend; 10 points indicates that it is very soft.

[0068] Table 1 Performance indicators of yarn in the embodiments

[0069] Example 1 412.3 11.22 7 Example 2 588.9 10.56 8 Example 3 332.2 5.95 8 Example 4 467.4 11.07 6

[0070] The paper yarn produced by this invention can be dyed with type X reactive dyes under alkaline conditions and can be used in textiles such as socks, underwear, bedding, sportswear and casual wear, towels, paper shoes and paper hats, as well as disposable packaging bags. The product has good breathability and water absorption, which can reduce costs and protect the environment.

[0071] Those skilled in the art will recognize that the embodiments described herein are intended to help the reader understand the implementation methods of the present invention, and should be understood that the scope of protection of the present invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on the technical teachings disclosed in this invention without departing from the spirit of the invention, and these modifications and combinations are still within the scope of protection of the present invention.

Claims

1. A high-strength paper yarn spinning method, characterized by, Includes the following steps: Step 1; Paper strip-enhanced humidification: Thin paper strips with a width of 1-10mm are passed through a sealed enhanced humidification device; The sealed enhanced humidification device includes a chassis with an inlet for the paper strips to be processed and an outlet for the processed paper strips. The chassis is equipped with an adjustable-speed, rotatable paper feed roller, a liquid storage tank, atomizing nozzles for spraying the liquid from the storage tank, and a heating device for regulating the temperature inside the chassis. The adjustable-speed paper feed roller guides the paper strips in an overfeed manner with an overfeed rate of 0.1-10%. The liquid storage tank contains enhanced liquid. The atomizing nozzles are fixedly mounted on the chassis, with one nozzle at the top and one at the bottom, spraying the enhanced liquid onto the paper strips at a spray rate of 40-80 cc / min. The heating device regulates the temperature inside the chassis. An adjustable winding roller is provided adjacent to the outlet of the sealed enhanced humidification device. The winding roller rotates to pull and collect the output paper strips. Step 2; Spinning; The paper yarn processed in Step 1 is directly processed by a doubling machine, which is located at the end of the winding roller operation sequence. The resulting paper yarn has a fineness of 8-80 tex.

2. A method of spinning a high-strength paper yarn according to claim 1, characterized in that: In step 1 above, the slender paper strips are cut from paper.

3. A method of spinning high strength paper yarn as claimed in claim 1, wherein: In step 1 above, 12-96 thin paper strips are connected in parallel; the number of paper strips in step 1 corresponds to the number of yarn heads in step 2; the paper strips are in a taut state in the sealed enhanced humidification device.

4. A method of spinning high strength paper yarn as claimed in claim 1, wherein: In step 1 above, the temperature inside the heating chamber of the heating equipment is 20-60℃, the humidity inside the chamber is 80-120%RH, and the paper strip is humidified inside the chamber for 24-72 hours.

5. A high-strength paper yarn spinning method according to claim 1, characterized in that: In step 2 above, the rotation speed of the yarn dotting machine is 200-500 rpm.

6. The spinning method for high-strength paper yarn according to claim 1, characterized in that: The reinforcing liquid comprises 80-90 parts by weight of epoxy resin, 5-10 parts by weight of anhydrous ethanol, and 5-10 parts by weight of curing agent. The reinforcing liquid is prepared by mixing and stirring the epoxy resin, anhydrous ethanol, and curing agent.

7. A method of spinning a high-strength paper yarn according to claim 6, characterized in that: The epoxy resin is an epoxy resin containing 45-60 parts by weight of epoxy groups per 100 parts by weight of resin; the curing agent is any one of primary amine, polythiol, polyphenol, and low molecular weight polyamide.

8. A spinning method for high-strength paper yarn according to claim 6 or 7, characterized in that: A functional finishing liquid is added to the reinforcing liquid, which includes any one or more of the following: softening agent, flame retardant agent, water repellent agent, wrinkle-resistant agent, and antibacterial agent.

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