CN111575908A - A kind of preparation method of environment-friendly clothing base cloth - Google Patents

Abstract

The invention relates to a preparation method of environment-friendly clothing material base cloth, which comprises the following steps: (1) dispersing polyester fibers with the titer of 0.01-0.1 dtex into deionized water to obtain a first polyester fiber solution; dispersing polyester fibers with the titer of 0.25-0.35 dtex into deionized water to obtain a second polyester fiber solution; (2) preparing two polyester fiber layers from the first polyester fiber solution, and preparing a polyester fiber base fabric from the second polyester fiber solution; then, pre-spunlace compounding is carried out to obtain three layers of composite leather base cloth; (3) the three-layer composite leather base cloth is firstly fixed and reinforced by common spunlace, and then is subjected to high-pressure swinging spunlace, squeezing dehydration,And (5) after vacuum water absorption, drying to obtain the environment-friendly clothing fabric base cloth. The cloth base fabric prepared by the method disclosed by the invention eliminates water needle lines on the surface of a product, is not fluffy and layered, is smooth and tidy in cloth surface and soft and exquisite in hand feeling, and the density of the finally prepared environment-friendly cloth base fabric reaches 0.3-50 g/cm²The gram weight is 120-180 g/m²In the meantime.

Description

A kind of preparation method of environment-friendly clothing base cloth

technical field

The invention relates to a preparation method of an environment-friendly clothing base fabric, and belongs to the technical field of composite spunlace non-woven fabrics.

Background technique

Clothing Leather is a very popular clothing fabric. It is noble, elegant, simple, calm and lively. Longer, plump and softer, and other characteristics, it is deeply loved by people.

Clothing leather is made by coating or impregnating polyurethane on the fabric base fabric, and then finishing, so the performance of its base fabric determines the quality and performance of the fabric leather. With the progress of the times, the current clothing leather is developing in the direction of functionality, fashion and environmental protection.

At present, the fabrics used to make clothing and leather mainly include four categories: machine-made fabrics, knitted fabrics, non-woven fabrics and composite fabrics. However, the existing production process and the production process of clothing and leather are seriously polluted, and the products are also polluted by harmful health. The reason is that the surface coating of the current animal skin and clothing leather is mostly made of solvent-based polyurethane, that is, oily PU. For example, Chinese patent document CN104404777A discloses a production process of suede, including the following steps: preparing acupuncture non-woven fabrics: acupuncture non-woven fabrics belong to a kind of non-woven fabrics, and are made of polyester and polypropylene raw materials. Acupuncture is made by appropriate hot rolling treatment; a layer of PVC foaming layer is coated on the acupuncture non-woven fabric; a surface treatment agent is coated on the outer layer of the foaming layer, and a PVC surface layer; coat a layer of suede-like artificial leather-like coating on the surface of the PVC surface layer, and the suede-like artificial leather-like coating is subjected to a low-temperature foaming embossing process; coat a suede-like artificial leather-like coating on the surface. Layers of waxy oily coating. The oily coating in this invention adopts oily PU, which has the risk of producing toxic volatile gas.

In addition, the inventor of the present invention also disclosed a patent document of a preparation method of a completely environmentally friendly leather base cloth in the early stage, and the patent publication number is CN107953497A. Disperse the polyester fibers into water to obtain a polyester fiber suspension; add a dispersant, stir evenly, and obtain a polyester solution; pass the polyester solution through the papermaking method, and use two upper and lower paper machines to prepare two layers of polyester paper. The upper and lower layers of polyester paper are compounded with the base cloth, so that the base cloth is in the middle, and the two sides of the base cloth are polyester paper to obtain a leather cloth; Cut and get it. However, this process uses fixed ordinary spunlace for compounding, and the product is reinforced by high-pressure water flow, and the surface will produce a series of water needle lines, making the surface rough and difficult to coat, affecting the feel of the product and affecting the appearance of the product.

SUMMARY OF THE INVENTION

Aiming at the deficiencies and limitations of the existing spunlace technology, in particular, the spunlace lines are obvious, the hand feel is rough, the coating is not easy, and the aesthetics of the product are affected, the present invention provides a preparation method of an environment-friendly clothing base fabric. The invention innovatively uses oscillating spunlace, uses fixed ordinary spunlace for pre-reinforcement, and then passes six swing spunlace back and forth to reinforce both sides of the product, making the product more porcelain and solid, reaching the industry standard of leather cloth. The base fabric of the invention, which is formed by entangling and compounding the superfine polyester fiber and the polyester fiber base fabric, is suitable for use as a material for producing clothes, and is colorless, odorless, and environmentally friendly. The clothing base fabric of the present invention has a three-layer structure, the upper layer and the lower layer are polyester fiber layers, and the middle is a polyester fiber base cloth layer.

Terminology Description:

Pressure unit: The pressure unit described in the present invention is expressed in kg, which is kilogram force, which is a common unit of force, and the international unit of force is Newton. 1 kilogram force refers to the gravitational force on a 1 kilogram object (ie 9.8N), so 1 kilogram force = 9.8 Newtons.

The technical scheme of the present invention is as follows:

A kind of preparation method of environmental protection clothing base cloth, comprises the steps as follows:

(1) Disperse polyester fibers with a fineness of 0.01 to 0.1 dtex into deionized water, and stir evenly to obtain a first polyester fiber solution; disperse polyester fibers with a fineness of 0.25 to 0.35 dtex in deionized water, and stir evenly , to obtain the second polyester fiber solution;

(2) Passing the first polyester fiber solution through a three-layer composite former to prepare two layers of polyester fiber; preparing a layer of polyester fiber base cloth from the second polyester fiber solution; then pre-spunlace the upper and lower layers The polyester fiber layer is compounded with the polyester fiber base fabric, so that the polyester fiber base fabric is in the middle, and both sides of the polyester fiber base fabric are polyester fiber layers, so as to obtain a three-layer composite leather base fabric;

(3) The three-layer composite leather base fabric is first reinforced by fixing ordinary spunlace, and then through high-pressure swing spunlace, pressing and dehydrating, and vacuum water absorption, fully interwoven to form a high-strength base fabric, and then drying to obtain an environmentally friendly clothing base fabric .

According to the present invention, preferably, the polyester fiber used in the first polyester fiber solution described in step (1) has a fineness of 0.05-0.08 dtex and a fiber length of 1-8 mm; the second polyester fiber solution The fineness of the polyester fiber used is 0.28-0.32 dtex, and the fiber length is 3-7 mm.

According to the present invention, preferably, the mass ratio of polyester fiber and deionized water in the first polyester fiber solution prepared in step (1) is 1: (50-55), and the polyester fiber and deionized water in the second polyester fiber solution are prepared. The mass ratio of deionized water is 1:(42～48).

According to the present invention, preferably, the polyester fiber base fabric described in step (2) has a gram weight of 60-100 g/m ² and a thickness of 0.4-0.7 mm.

According to the present invention, preferably, the pressure of the pre-spunlace in step (2) is 35-45 kg.

According to the present invention, preferably, the pressure for fixing the common spunlace in step (3) is 55-65 kg.

According to the present invention, preferably, in step (3), the high-pressure swing spunlace is gradually pressurized, and the initial pressure of the gradual pressurization is 65-75kg, and the end pressure is 130-140kg.

The present invention has been described in detail, and all are carried out according to the conventional practice in the art.

Technical characteristics of the present invention:

The environment-friendly clothing base fabric of the present invention utilizes ultra-fine and ultra-short polyester fiber PET to manufacture the base fabric by the method of hydroentanglement compounding without any chemical treatment, and the base fabric is suitable for impregnation or coating with water-based PU. Fabric, colorless, odorless and environmentally friendly. Therefore, it is completely environmentally friendly after processing, and is suitable as a material for the production of clothes. And in the preparation process, high-pressure swing spunlace is used for compounding. During the process of high-pressure swing spunlace, the pressure is gradually increased. The initial pressure of the step-by-step pressure increase is 65-75kg, and the end pressure is 130-140kg, so that the pressure is uniform and suitable. The water pressure is too small to delaminate and the density is low, the tearing strength is low when the pressure is too high, and the pressure is too large to destroy the structure of the base fabric, and the water needle swings in a circle during the spunlace process, so that the environmentally friendly clothing base prepared by the present invention can be avoided. The cloth eliminates the water needle pattern on the surface, making it smoother and feels better.

The beneficial effects of the present invention are as follows:

1. The raw material used in the present invention is ultra-fine and ultra-short polyester fiber, which can be dispersed evenly without adding a dispersant during use; meanwhile, the fineness of the polyester fiber selected by the first polyester fiber solution of the present invention is 0.05 ～0.08dtex, the fiber length is 1～8mm, the fineness of the polyester fiber used for the second polyester fiber solution is 0.28～0.32dtex, and the fiber length is 3～7mm; Hair loss, high cost and difficult to form in the follow-up; too long fiber, too large fineness, it is not easy to disperse, and the finished product has poor uniformity.

2. The present invention adopts a swing type spunlace machine for high-pressure spunlace, and in the process of high-pressure spunlace, by gradually pressurizing, the initial pressure of the gradual pressurization is 65-75kg, and the end pressure is 130-140kg, so that the pressure is uniform. It is suitable, and the water needle swings in a circle during the spunlace process, the prepared environmentally friendly clothing base fabric eliminates the water needle pattern on the surface of the product, has no lint, and does not delaminate, and at the same time, the cloth surface is smooth and tidy, and the hand feels soft and delicate. The final prepared environmentally friendly clothing material The density of the base fabric is 0.3～50g/cm ² , and the gram weight is between 120～180g/m ² , which is suitable for the production of clothes.

3. The present invention does not use any organic solvent in the process of preparing the environmentally friendly clothing base fabric, does not produce pollution, and is completely environmentally friendly. At the same time, the preparation method has simple steps, and the upper and lower two formers are replaced by a three-layer composite former, which is easier to form. The overall process is shortened, and at the same time, the produced environmentally friendly clothing base fabric is easy to dry, has high productivity, can replace animal leather, is beautiful, economical, and has a wide range of uses.

Description of drawings

Fig. 1 is the structure diagram of the environment-friendly clothing base cloth prepared in Example 1.

2 is a schematic diagram of the fiber structure of the environmentally friendly clothing base fabric prepared in Example 1.

3 is a schematic diagram of the fiber structure of the environmentally friendly clothing base fabric prepared in Comparative Example 2.

Detailed ways

The present invention will be further described below through specific embodiments, but not limited thereto.

The raw materials used in the examples are all conventional raw materials, and the equipment used are all conventional equipment, commercially available products.

Example 1

A kind of preparation method of environmental protection clothing leather base cloth, comprises the steps as follows:

(1) Disperse polyester fibers with a fineness of 0.05 dtex and a fiber length of 5 mm into deionized water, and stir evenly to obtain a first polyester fiber solution; disperse polyester fibers with a fineness of 0.3 dtex and a fiber length of 6 mm into deionized water In deionized water, stir evenly to obtain the second polyester fiber solution;

(2) Passing the first polyester fiber solution through a three-layer composite former to prepare two layers of polyester fibers; preparing a layer of polyester fiber base cloth from the second polyester fiber solution; The polyester fiber layer is compounded with the polyester fiber base fabric, so that the polyester fiber base fabric is in the middle, and both sides of the polyester fiber base fabric are polyester fiber layers, so as to obtain a three-layer composite leather base fabric;

(3) The three-layer composite leather base fabric is first reinforced by 55kg fixed ordinary spunlace, and then the oscillating spunlace is used for high-pressure swing spunlace reinforcement to eliminate the water needle pattern. The high-pressure swing spunlace is gradually pressurized and gradually pressurized. The initial pressure is 65kg, and the end pressure is 130kg. After pressing and dehydration, vacuum water absorption, it enters the hot air drying for initial drying, sends the drying cylinder to dry, rolls up, and finally cuts to obtain the environmental protection clothing base cloth.

The structure of the environmentally friendly clothing base fabric prepared in this example is shown in Figure 1, which is divided into three layers, the polyester fiber base fabric is in the middle, and both sides of the polyester fiber base fabric are polyester fiber layers, and the fiber structure is shown in Figure 2.

Example 2

A kind of preparation method of environmental protection clothing leather base cloth, comprises the steps as follows:

(1) Disperse polyester fibers with a fineness of 0.06 dtex and a fiber length of 6 mm into deionized water, and stir evenly to obtain a first polyester fiber solution; disperse polyester fibers with a fineness of 0.28 dtex and a fiber length of 7 mm into deionized water. In deionized water, stir evenly to obtain the second polyester fiber solution;

(2) Pass the first polyester fiber solution through a three-layer composite former to prepare two layers of polyester fibers; prepare a layer of polyester fiber base cloth from the second polyester fiber solution; The polyester fiber layer is compounded with the polyester fiber base fabric, so that the polyester fiber base fabric is in the middle, and both sides of the polyester fiber base fabric are polyester fiber layers, so as to obtain a three-layer composite leather base fabric;

(3) The three-layer composite leather base fabric is first reinforced by 60kg fixed ordinary spunlace, and then the oscillating spunlace is used for high-pressure swing spunlace reinforcement to eliminate the water needle pattern. The high-pressure swing spunlace is gradually pressurized and gradually pressurized The initial pressure is 70kg, and the end pressure is 135kg. After pressing and dehydration, vacuum water absorption, it enters the hot air drying for initial drying, sends the drying cylinder to dry, rolls up, and finally cuts to obtain the environmental protection clothing base cloth.

Example 3

A kind of preparation method of environmental protection clothing leather base cloth, comprises the steps as follows:

(1) Disperse polyester fibers with a fineness of 0.07 dtex and a fiber length of 7 mm into deionized water, and stir evenly to obtain a first polyester fiber solution; disperse polyester fibers with a fineness of 0.32 dtex and a fiber length of 5 mm into deionized water In deionized water, stir evenly to obtain the second polyester fiber solution;

(2) Pass the first polyester fiber solution through a three-layer composite former to prepare two layers of polyester fiber; prepare a layer of polyester fiber base cloth from the second polyester fiber solution; The polyester fiber layer is compounded with the polyester fiber base fabric, so that the polyester fiber base fabric is in the middle, and both sides of the polyester fiber base fabric are polyester fiber layers, so as to obtain a three-layer composite leather base fabric;

(3) The three-layer composite leather base fabric is first reinforced by 65kg fixed ordinary spunlace, and then the oscillating spunlace is used for high-pressure swing spunlace reinforcement to eliminate the water needle pattern. The high-pressure swing spunlace is gradually pressurized and gradually pressurized. The initial pressure is 75kg, and the end pressure is 140kg. After pressing and dehydration, vacuum water absorption, it enters the hot air drying for initial drying, sends the drying cylinder to dry, rolls up, and finally cuts to obtain the environmental protection clothing base cloth.

Comparative Example 1

As described in Example 1, the difference is:

The length of polyester fiber in step (1) is 0.5mm.

Comparative Example 2

As described in Example 1, the difference is:

The length of polyester fiber in step (1) is 12mm.

The fiber structure diagram of the environmentally friendly clothing base cloth prepared in this comparative example is shown in FIG. 3 .

Comparative Example 3

As described in Example 1, the difference is:

In the step (3), the initial pressure of the high-pressure swing spunlace step-by-step pressurization is 20kg, and the end pressure is 100kg.

Comparative Example 4

As described in Example 1, the difference is:

In the step (3), the initial pressure of the high-pressure swing spunlace step-by-step pressurization is 100kg, and the end pressure is 200kg.

Comparative Example 5

As described in Example 1, the difference is:

In step (3), a fixed common spunlace with a pressure of 100kg is used.

Compared with Comparative Example 2, Example 1 uses polyester fibers with a length of 5 mm and a fineness of 0.05 dtex, so that the fiber structure of the environmentally friendly clothing base fabric prepared in Example 1 is finer, with better uniformity, easier to form, no lint, and no lint. Layered, at the same time, the cloth surface is smooth and neat, and the hand feels soft and delicate.

Test Example 1

The performance indicators of the environmentally friendly clothing base fabrics prepared in Examples 1-3 and Comparative Examples 1-5 were tested, and the results are shown in Table 1.

Table 1

Item Number Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Gram weight (g/㎡) 120 150 180 90 95 100 105 120 Transverse breaking strength N 575 595 655 270 345 315 355 210 Longitudinal breaking strength N 565 595 685 290 340 315 375 205 Transverse tear strength N 29 31 32 19 18 16 19 twenty one Longitudinal tear strength N twenty four 26 28 17 15 14 18 14 evenness excellent good good Difference Difference good good Difference Difficulty forming easy easy easier Disaster difficult easier easier Disaster delamination No delamination No delamination No delamination delamination delamination delamination delamination delamination

By comparing the performance indicators of Examples 1-3 and Comparative Examples 1-2 in Table 1, it can be seen that too long or too short polyester fibers will lead to a small gram weight of the finished product, low breaking strength and tear strength, and poor uniformity. It is difficult to form and easy to delaminate. By comparing the performance indicators of Examples 1-3 and Comparative Examples 3-4, it can be seen that the high-pressure swing spunlace pressure is too low, resulting in a small gram weight of the finished product, and low breaking strength and tear strength. However, it is very easy to delaminate; and the high pressure of the high-pressure swing spunlace will lead to a small gram weight of the finished product, and a low breaking strength and tear strength. Although the uniformity is good and the molding is easier, it is very easy to delaminate. By comparing the performance indicators of Examples 1-3 and Comparative Example 5, it can be seen that the environmental protection clothing base fabric prepared by using fixed ordinary spunlace is only qualified in terms of gram weight, and other breaking strength, tear strength and uniformity are unqualified, and the uniformity is not qualified. Poor degree, difficult to form, and delamination.

Claims (9)

1. A preparation method of environment-friendly clothing material base cloth comprises the following steps:

(1) dispersing polyester fibers with the fineness of 0.01-0.1 dtex into deionized water, and uniformly stirring to obtain a first polyester fiber solution; dispersing polyester fibers with the fineness of 0.25-0.35 dtex into deionized water, and uniformly stirring to obtain a second polyester fiber solution;

(2) passing the first polyester fiber solution through a three-layer composite former to prepare two polyester fiber layers; preparing a layer of polyester fiber base fabric from the second polyester fiber solution; then compounding the upper and lower polyester fiber layers with the polyester fiber base fabric by pre-spunlace to ensure that the polyester fiber base fabric is in the middle and the two sides of the polyester fiber base fabric are polyester fiber layers to obtain three-layer composite leather base fabric;

(3) and (3) fixing the three-layer composite leather base cloth by common spunlace for reinforcement, fully interweaving the three-layer composite leather base cloth after high-pressure swing spunlace, squeezing for dehydration and vacuum water absorption to form high-strength base cloth, and drying to obtain the environment-friendly cloth base cloth.

2. The method for preparing environment-friendly clothing base cloth according to claim 1, wherein the fineness of the polyester fiber used in the first polyester fiber solution in the step (1) is 0.05 to 0.08dtex, and the fiber length is 1 to 8 mm.

3. The method for preparing environment-friendly clothing base fabric according to claim 1, wherein the fineness of the polyester fiber for the second polyester fiber solution in the step (1) is 0.28 to 0.32dtex, and the fiber length is 3 to 7 mm.

4. The method for preparing the environment-friendly clothing base cloth according to claim 1, wherein the mass ratio of the polyester fibers to the deionized water in the first polyester fiber solution prepared in the step (1) is 1: (50-55).

5. The method for preparing the environment-friendly clothing base fabric as claimed in claim 1, wherein the mass ratio of the polyester fiber to the deionized water in the second polyester fiber solution prepared in the step (1) is 1: (42-48).

6. The method for preparing the environment-friendly clothing base fabric as claimed in claim 1, wherein the gram weight of the polyester fiber base fabric in the step (2) is 60-100 g/m²The thickness is 0.4 to 0.7 mm.

7. The method for preparing the environment-friendly base fabric for clothing according to claim 1, wherein the pressure of the pre-hydroentangling in the step (2) is 35 to 45 kg.

8. The method for preparing the environment-friendly cloth base fabric as claimed in claim 1, wherein the pressure for fixing the common spunlace in the step (3) is 55-65 kg.

9. The method for preparing the environment-friendly cloth base fabric as claimed in claim 1, wherein the high-pressure swing spunlace in the step (3) is gradually pressurized, the initial pressure of the gradual pressurization is 65-75 kg, and the ending pressure of the gradual pressurization is 130-140 kg.

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