阅读说明：本技术 一种环保衣料基布的制备方法 (Preparation method of environment-friendly clothing base fabric ) 是由 张建林 许付铜 刘文聚 臧德俊 王发烨 于 2020-05-27 设计创作，主要内容包括：本发明涉及一种环保衣料基布的制备方法,包括步骤如下：(1)将纤度为0.01～0.1dtex的聚酯纤维分散到去离子水中,得第一聚酯纤维溶液；将纤度为0.25～0.35dtex的聚酯纤维分散到去离子水中,得第二聚酯纤维溶液；(2)将第一聚酯纤维溶液制备两层聚酯纤维层,将第二聚酯纤维溶液制备一层聚酯纤维底布；然后通过预水刺复合,得三层复合皮革基布；(3)将三层复合皮革基布先经固定普通水刺加固,再高压摆动水刺、压榨脱水、真空吸水后,干燥,即得环保衣料基布。本发明制备的衣料基布消除产品表面水针纹,不起毛,不分层,同时布面光滑整洁,手感柔软细腻,最终制备得到的环保衣料基布密度达0.3～50g/cm<Sup>2</Sup>,克重在120～180g/m<Sup>2</Sup>之间。(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/cm 2 The gram weight is 120-180 g/m 2 In the meantime.)

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.

Technical Field

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

Background

The leather for making clothes has the characteristics of extremely strong cold resistance, wind resistance and heat retention, durability, wear resistance, long service life, plump and soft hand feeling and the like, and is deeply loved by people.

The cloth leather is prepared by coating or soaking polyurethane on a fabric base cloth and then finishing, so that the quality and the performance of the cloth leather are determined by the performance of the base cloth. With the progress of the times, the current cloth leather is developing towards functionality, fashion, environmental protection and the like.

At present, the fabrics used for making the cloth leather mainly comprise four types of machine-made cloth, knitted cloth, non-woven cloth and composite fabric. However, the existing production process has serious pollution in the production process of the cloth and leather, and the pollution harmful to the body exists in the product. The reason is that the surface coating of the prior animal skin and clothing leather is mostly made of solvent polyurethane, namely oily pu. For example, chinese patent document CN104404777A discloses a process for producing suede leather, comprising the following steps: preparing a needle-punched non-woven fabric: the needle-punched non-woven fabric is made of terylene and polypropylene fiber raw materials and is formed by multiple times of needle punching and proper hot rolling treatment; coating a PVC foaming layer on the needled non-woven fabric; coating a surface treating agent on the outer layer of the foaming layer, and forming a PVC surface layer after the surface treating agent is dried and solidified; coating a layer of fur-like artificial leather feeling coating on the surface of the PVC surface layer, and carrying out a low-temperature foaming embossing process on the fur-like artificial leather feeling coating; and coating a layer of wax-feeling oily coating on the surface of the fur-feeling artificial leather-feeling coating. The oily coating in the invention adopts oily pu, so that the risk of generating toxic volatile gas exists.

In addition, the inventor of the present invention also discloses a patent document of a preparation method of a completely environment-friendly leather base fabric in the previous period, and the patent publication number is CN 107953497A. Dispersing polyester fibers into water to prepare a polyester fiber suspension; adding a dispersing agent, and uniformly stirring to obtain a terylene solution; preparing two layers of polyester paper by using an upper paper machine and a lower paper machine through a polyester solution by a paper making method, and compounding the upper polyester paper layer and the lower polyester paper layer with base cloth through a compounding roller to enable the base cloth to be in the middle and enable two surfaces of the base cloth to be polyester paper, so that leather cloth is obtained; carrying out high-pressure spunlace and squeezing dehydration on the leather cloth, then drying in a drying cylinder, rolling, and finally slitting to obtain the leather cloth. However, the process adopts fixed common spunlace for compounding, and the product is reinforced by high-pressure water flow, so that the surface of the product can generate one course of water needle lines, the surface of the product is rough, the coating is not easy to occur, the hand feeling of the product is influenced, and the attractiveness of the product is influenced.

Disclosure of Invention

Aiming at the defects and limitations of the existing spunlace technology, particularly obvious grain of the spunlace, rough hand feeling, difficult coating and influence on the aesthetic property of the product, the invention provides the preparation method of the environment-friendly clothing material base fabric. The invention innovatively uses swing spunlace, uses fixed common spunlace to pre-reinforce, and then reinforces the two sides of the product through six swing spunlaces in front and back, so that the product is more ceramic and solid and reaches the industrial standard of leather cloth. The base cloth is formed by twisting and compounding the superfine polyester fibers and the polyester fiber base cloth, is suitable for being used as a material for producing clothes, and is colorless, tasteless and environment-friendly. The cloth base cloth is of a three-layer structure, wherein the upper layer and the lower layer are polyester fiber layers, and the middle layer is a polyester fiber base cloth layer.

Description of terms:

pressure unit: the pressure units are expressed in kg, namely kilogram force, which is a common unit of force, and the international unit of force is Newton. A force of 1 kilogram refers to the gravitational force (i.e., 9.8N) experienced by a body of 1 kilogram, so that 1 kilogram force is 9.8 newtons.

The technical scheme of the invention is as follows:

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.

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

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

According to the invention, the gram weight of the polyester fiber base cloth in the step (2) is preferably 60-100 g/m²The thickness is 0.4 to 0.7 mm.

According to the present invention, it is preferable that the pressure of the pre-hydroentangling in the step (2) is 35 to 45 kg.

According to the present invention, it is preferable that the pressure for fixing the normal spunlace in the step (3) is 55 to 65 kg.

According to the invention, preferably, 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 is 130-140 kg.

The present invention has been described in detail and is generally practiced in the art.

The invention has the technical characteristics that:

the environment-friendly clothing fabric base fabric is manufactured by using the ultra-fine ultra-short polyester fiber PET and adopting a water-needling composite method under the condition of not carrying out any chemical treatment, is a fabric suitable for being impregnated or coated by water-based PU, and is colorless, tasteless and environment-friendly. Therefore, the processed product is completely environment-friendly and is suitable for being used as a material for producing clothes. And in the preparation process, high-pressure swing spunlace is adopted for compounding, the initial pressure of the step-by-step pressurization is 65-75 kg and the final pressure is 130-140 kg in the high-pressure swing spunlace process, so that the pressure is uniform and proper, delamination when the pressure of water is too small is effectively avoided, the density is low, the tearing strength is low when the pressure is too large, the pressure greatly damages the base fabric structure, and the water needle circularly swings in the spunlace process, so that the surface water needle marks of the prepared base fabric of the environment-friendly clothing are eliminated, and the base fabric is smoother and has better hand feeling.

The invention has the following beneficial effects:

1. the raw material adopted in the invention is ultra-short polyester fiber, and can be dispersed uniformly without adding a dispersant in the using process; meanwhile, the titer of the polyester fiber selected by the first polyester fiber solution is 0.05-0.08 dtex, the fiber length is 1-8 mm, the titer of the polyester fiber used by the second polyester fiber solution is 0.28-0.32 dtex, and the fiber length is 3-7 mm; if the fiber is too short, the fiber number is too small, the fiber is easy to run off, the hair is easy to fall off, the cost is high, and the subsequent forming is difficult; if the fiber is too long and the fineness is too large, the dispersion is difficult, and the evenness of the finished product is poor.

2. The invention adopts a swing type spunlace machine to carry out high-pressure spunlace, the initial pressure of the step-by-step pressurization is 65-75 kg, the final pressure is 130-140 kg by the step-by-step pressurization in the high-pressure spunlace process, the pressure is uniform and appropriate, the water needle circularly swings in the spunlace process, the prepared environment-friendly cloth base cloth eliminates water needle lines on the surface of a product, is not fluffy and layered, and has smooth and tidy cloth surface and soft and fine hand feeling, and the density of the finally prepared environment-friendly cloth base cloth reaches 0.3-50 g/cm²The gram weight is 120-180 g/m²The method is suitable for being used as a material for producing clothes.

3. The method has the advantages of no use of any organic solvent in the process of preparing the environment-friendly clothing material base cloth, no pollution, complete environment protection, simple steps of the preparation method, easy molding due to the fact that the upper and lower two molding machines are replaced by the three-layer composite molding machine, shortening of the whole process, easy drying of the prepared environment-friendly clothing material base cloth, high yield, capability of replacing animal leather, attractive appearance, economy, practicability and wide application.

Drawings

Fig. 1 is a structural diagram of the base fabric of the environment-friendly clothing prepared in example 1.

Fig. 2 is a schematic view of a fiber structure of the environment-friendly clothing fabric base fabric prepared in example 1.

Fig. 3 is a schematic view of the fiber structure of the eco-friendly clothing base fabric prepared in comparative example 2.

Detailed Description

The present invention is further illustrated by, but is not limited to, the following specific examples.