WO2021208303A1 - Low-shrinkage woven fabric, low-shrinkage flooring material, and preparation method therefor - Google Patents

Abstract

Disclosed is low-shrinkage woven fabric (1), comprising a base fabric layer, wherein warp and weft yarns of the base fabric layer are obtained by means of a multi-step heat setting treatment. Textile fibers (2) are tufted on the low-shrinkage woven fabric (1), and the back surface is coated with a back adhesive layer (3) to obtain a low-shrinkage flooring material. In the low-shrinkage woven fabric (1), warp and weft yarns are subjected to the multi-step heat setting treatment, such that shrinkage of the woven fabric (1) caused by weather reasons such as sun exposure and high temperatures is reduced. Compared with similar products, the low-shrinkage woven fabric has an extremely low shrinkage rate; problems, such as swelling, curling deformation and unevenness, in a high-temperature environment are solved by using the low-shrinkage flooring material prepared from the low-shrinkage woven fabric; and the service life of the flooring material is prolonged, and the value of same is improved.

Description

Low-shrinkage woven fabric, low-shrinkage paving material and preparation method thereof Technical field

The invention relates to the technical field of woven fabrics and flooring materials, and more specifically to a low-shrinkage woven fabric, low-shrinkage flooring materials and a preparation method thereof.

Background technique

Artificial turf, carpet, etc. are floor materials that have developed rapidly in recent decades. It is a floor paving product artificially made with plastic chemical fiber as the main raw material. It has a natural and comfortable touch, and with its long service cycle, Uniformity and low maintenance management requirements are widely accepted by people. However, as people's requirements for the stability and flatness of paving materials increase, more and more quality problems are exposed in various venues. The reason is mainly caused by the shrinkage behavior of the woven fabric used in such floor covering materials.

The main raw materials of woven fabrics are polypropylene, polyester, nylon, polystyrene and other plastics, and they are made through processes such as drawing, warping and weaving. At present, due to the high shrinkage rate of the yarn, the woven fabric is easy to shrink, and the prepared floor material is easy to shrink under the exposure and high temperature environment, the size becomes shorter, the product is swollen and uneven, etc., which seriously reduces the floor material The value of use.

Therefore, how to provide a woven fabric with low shrinkage and good deformation resistance and a preparation method thereof is an urgent problem to be solved by those skilled in the art.

Summary of the invention

In view of this, the present invention provides a low-shrinkage woven fabric, which has extremely low thermal shrinkage, and effectively solves the problems of expansion, bulging, poor dimensional stability, and shrinkage of floor materials in high-temperature environments. .

In order to achieve the above objectives, the present invention adopts the following technical solutions:

A low-shrinkage woven fabric includes a base fabric layer, and the warp and weft yarns of the base fabric layer are obtained through multi-step heat setting treatment.

The base fabric layer uses polypropylene resin as the main raw material, and the mass percentage of the polypropylene resin in the base fabric layer is not less than 90%.

Polypropylene is a general-purpose plastic with excellent comprehensive performance and large market supply. In addition to polypropylene resin, the base fabric layer raw materials can be added with anti-aging agents to improve the stability of the woven fabric to light and heat, and some processing aids can also be added to improve the processing performance of the woven fabric. Fillers can also be added to a certain extent. To reduce its shrinkage, you can also add different pigments to obtain different colors.

The present invention requires that the mass percentage of the polypropylene resin in the base cloth layer is not less than 90%, and if it is less than 90%, the strength of the woven fabric will be impaired.

Preferably, in the above-mentioned low-shrinkage woven fabric, the multi-step heat setting treatment of the warp and weft yarns of the base fabric layer includes at least one oven heat setting treatment, and the oven heat setting treatment temperature is 100- At 130°C, the treatment time is 5-24h, more preferably 8-20h.

The beneficial effect of the above technical solution is that the multi-step heat setting treatment improves the crystallinity of the warp and weft yarns, reduces the shrinkage rate, and is the key to obtaining a low-shrinkage woven fabric. If the heat setting temperature is lower than 100°C or higher than 130°C, it is not conducive to the improvement of the crystallinity of the warp and weft yarns, resulting in a relatively high shrinkage rate of the yarn after the treatment. If the treatment time is less than 5h, the yarn If the thread is not heated enough, the crystallinity is not improved enough and the shrinkage rate is relatively large, which has no obvious effect on the reduction of the shrinkage rate of the woven fabric, and will make the production efficiency and low cost high.

Preferably, in the above-mentioned low-shrinkage woven fabric, the raw material of the base fabric layer further includes a low-shrinkage polymer resin other than polypropylene, wherein the low-shrinkage polymer resin is selected from polyethylene terephthalate One or more of (PET), nylon (PA), polyphenylene sulfide (PPS), polystyrene (PS), and polylactic acid (PLA). The introduction of these low shrinkage polymer resins can further reduce the shrinkage of the base fabric layer.

Further, the mass percentage of the low shrinkage polymer resin is 1-8%, preferably 2-5%. If the mass percentage of the low shrinkage polymer resin is less than 1%, its effect is small, and if it is higher than 8%, it will affect the strength of the base fabric layer.

Preferably, in the above-mentioned low-shrinkage woven fabric, it further includes a composite layer, the composite layer is located outside the base cloth layer, and the composite layer includes, but is not limited to, mixed cotton, mesh cloth, and non-woven fabric .

Further, the composite layer may form an integral woven fabric with the base fabric layer by needle punching, adhesive gluing, and the like.

The beneficial effect of the above technical solution is that the composite layer of mixed cotton, non-woven fabric, etc. can be simply needled on the base cloth layer to form a whole, and the grid cloth can be used in the production process of paving materials, such as tufting. Use the base fabric together. The introduction of the composite layer can improve the stability of the glue layer in the floor material.

Preferably, the aforementioned low-shrinkage woven fabric further contains glass fiber cloth, and the glass fiber cloth is located between the base cloth layer and the composite layer.

The beneficial effect of the above technical solution is that glass fiber is an inorganic non-metallic material with excellent performance, good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength, and is usually used as a reinforcing material in composite materials. Glass fiber cloth is a non-twisted roving plain weave fabric. It is an important base material for hand-laid glass fiber reinforced plastic. The strength of glass fiber cloth is mainly in the warp and weft direction of the fabric. It is suitable for occasions that require high strength in the warp or weft direction. The shrinkage rate is very low, which can greatly reduce the shrinkage rate of the fabric by more than 30%.

Preferably, in the above-mentioned low-shrinkage woven fabric, the warp and weft yarn crystallinity of the base fabric layer is not less than 60%, and the yarn shrinkage rate is not more than 8‰.

The beneficial effect of the above technical solution is that the crystallinity is measured by differential calorimetry (DSC) at a heating rate of 10°C/min, and the shrinkage is measured under the condition of 132°C/20min. The crystallinity of the yarn is less than 60%, the shrinkage rate is higher than 8‰, and the obtained woven fabric has a relatively high shrinkage rate.

The invention also discloses a method for preparing a low-shrinkage woven fabric. When the low-shrinkage woven fabric is the base fabric layer, the preparation method includes the following steps:

(1) Inject polypropylene resin, color masterbatch and other additives into the extruder according to a certain ratio. The extruded fiber is cooled by water and then subjected to hot roller heat setting treatment by a hot metal roller. Toward yarn group and weft direction yarn group;

(2) Put the warp yarn group and the weft yarn group into the oven for oven heat setting treatment, after the oven heat setting treatment is over, take out the yarn group for use;

(3) Warp the warp yarn group after the oven heat setting treatment to obtain a warp beam, and weave the warp yarn group together with the weft yarn group after the oven heat setting treatment on the loom according to a certain roll length and width, namely Get the base fabric layer of low shrinkage woven fabric.

Preferably, in the above-mentioned method for preparing a low-shrinkage woven fabric, the temperature of the hot roller heat setting treatment in step (1) is 110-160°C, the roller speed is 200-350r/min, and the number of rollers For 5 to 10.

The beneficial effect of the above technical solution is that when the hot metal roller is heated, the yarn is close to the surface of the roller, and due to the high efficiency of solid-solid heat conduction, the heat of the roller can be quickly transferred to the yarn. The heat energy can evaporate the excess water in the yarn, so that the yarn is quickly heated and shaped, and the shrinkage and deformation in the subsequent use process are reduced.

Preferably, in the above-mentioned method for preparing a low-shrinkage woven fabric, the method further includes the following steps: continuing the low-shrinkage woven fabric obtained in step (3) to contact heat setting, hot air tentering setting or infrared radiation setting, and further Reduce shrinkage.

The invention also discloses a low-shrinkage floor covering material, comprising a low-shrinkage woven fabric, textile fibers and a backing layer, the textile fiber is tufted on the upper surface of the low-shrinkage woven cloth, and the backing layer is coated Cover the back of the low shrinkage woven fabric.

The invention also discloses a preparation method of a low-shrinkage floor covering material, which comprises the following steps:

(1) Use a tufting machine to tuft the textile fibers onto a low-shrinkage woven fabric to form a semi-finished product according to the specified row and needle pitch; (2) Apply adhesive on the back of the semi-finished product and cure it in an oven to obtain Low shrinkage flooring material.

It can be seen from the above technical solutions that, compared with the prior art, the present invention has the following beneficial effects: The present invention mainly adds a multi-step heat setting treatment to the production process of the woven fabric base fabric layer to make the prepared woven fabric and The paving material has a low thermal shrinkage rate under exposure and high temperature environment, so as to improve the thermal stability of the product, and improve the swelling, curling, deformation, and unevenness of the paving material in the high temperature environment, so that the paving material has Good anti-deformation ability improves its service life and value.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only It is an embodiment of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without creative work.

Figure 1 is a cross-sectional view of the low-shrinkage floor covering material of the present invention.

In the picture:

1 is woven fabric, 2 is textile fiber, and 3 is adhesive layer.

Detailed ways

The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

In the following examples and comparative examples, the textile fibers used are all artificial grass yarns, the back glue layer (adhesive) is all styrene butadiene rubber, and the prepared paving materials are all artificial turf.

Example 1

(1) Preparation of low-shrinkage woven fabric (only base fabric layer):

(A) Inject polypropylene (polypropylene, F401) and color masterbatch into the extruder at a mass ratio of 98:2 for extrusion and drawing;

(B) The yarn cooled by water is shaped by a hot metal roller, the temperature of the roller is 130℃, the speed of the roller is 240r/min, the number of rollers is 6, and the yarn is heat-set by the hot roller Rewinding to obtain warp and weft yarn lumps respectively;

(C) Put the warp and weft yarns into a hot oven for heat setting treatment. The temperature of the hot oven is set to 120℃, and the treatment time is 12 hours. After the heat setting is finished, take it out for use;

(D) Warp the warp yarn group treated in (C) to obtain a warp beam, and weave it together with the weft yarn group treated in (C) into a base with a roll length of 800m and a width of 4.16m. Cloth layer.

Use this base cloth layer alone as a woven cloth.

(2) Preparation of low-shrinkage paving materials:

(A) Tuft the artificial turf silk on the woven fabric layer obtained in (1) above by using a tufting machine according to the specified row and needle pitch to obtain a semi-finished lawn;

(B) Coating an adhesive on the back of the semi-finished lawn and curing it in an oven to form a back glue layer to produce an artificial lawn with a low shrinkage rate.

Example 2

(1) Preparation of low shrinkage woven fabric:

(A) Inject polypropylene (F401, Yangzi Petrochemical), polystyrene (GPPS 525, Guangzhou Petrochemical) and color masterbatch into the extruder at a mass ratio of 92:5:3 for extrusion and drawing;

(B) The yarn cooled by water is shaped by a hot metal roller, the temperature of the roller is 120℃, the speed of the roller is 220r/min, the number of rollers is 6, and the yarn is heat-set by the hot roller Rewinding to obtain warp and weft yarn lumps respectively;

(C) Put the warp and weft yarns into a hot oven for heat setting treatment. The temperature of the hot oven is set to 115°C and the treatment time is 20 hours. After the heat setting is completed, take it out for use;

(D) Warp the warp yarn group treated in (C) to obtain a warp beam, and weave it together with the weft yarn group treated in (C) into a base with a roll length of 800m and a width of 4.16m. Cloth layer.

(E) The polyester non-woven fabric is needle-punched with the base fabric layer obtained in (D) to form an integral woven fabric.

(2) Preparation of low-shrinkage paving materials:

(A) Tuft the artificial turf silk on the woven fabric obtained in (1) above with a tufting machine according to the specified row and needle pitch to obtain a semi-finished lawn;

(B) Coating an adhesive on the back of the semi-finished lawn and curing it in an oven to form a back glue layer to produce an artificial lawn with a low shrinkage rate.

Example 3

(1) Preparation of low shrinkage woven fabric:

(A) Inject polypropylene (F401, Yangzi Petrochemical), color masterbatch and calcium carbonate into the extruder at a mass ratio of 94:1:5 for extrusion and drawing;

(B) The yarn cooled by water is shaped by a hot metal roller, the temperature of the roller is 140℃, the speed of the roller is 300r/min, the number of rollers is 8, and the yarn is heat-set by the hot roller Rewinding to obtain warp and weft yarn lumps respectively;

(C) Put the warp and weft yarns into a hot oven for heat setting treatment. The temperature of the hot oven is set to 125°C, and the setting time is 8 hours. After the heat setting is completed, take out the oven for standby;

(D) Warp the warp yarn group treated in (C) to obtain a warp beam, and weave it together with the weft yarn group treated in (C) into a base with a roll length of 800m and a width of 4.16m. Cloth layer

(E) The base fabric layer obtained in (D) is subjected to hot-air stenter setting treatment, the machine speed is 15m/min, the hot-air box temperature is 140°C, and the residence time is 3min;

(F) The base cloth layer obtained by E and the grid cloth are used as a woven cloth.

(2) Preparation of low-shrinkage paving materials:

(A) Tuft the artificial turf silk on the woven fabric obtained in (1) above with a tufting machine according to the specified row and needle pitches to form a semi-finished lawn;

(B) Coating an adhesive on the back of the semi-finished lawn and curing it in an oven to form a back glue layer to produce an artificial lawn with a low shrinkage rate.

Example 4

(1) Preparation of low shrinkage woven fabric:

The base cloth layer is the same as in Example 1. The polyester non-woven fabric, glass fiber cloth, and glass fiber cloth are in the middle, and the base cloth layer is needle-punched to form an integral woven fabric.

(2) Preparation of low-shrinkage paving materials:

(A) Tuft the artificial turf silk on the woven fabric obtained in (1) above with a tufting machine according to the specified row and needle pitch to obtain a semi-finished lawn;

(B) Coating an adhesive on the back of the semi-finished lawn and curing it in an oven to form a back glue layer to produce an artificial lawn with a low shrinkage rate.

Comparative example 1

(1) Preparation of woven fabric:

(A) Inject polypropylene (F401, Yangzi Petrochemical) and color masterbatch into the extruder at a mass ratio of 98:2 for extrusion and drawing;

(B) The yarn cooled by water is shaped by a hot metal roller, the temperature of the roller is 130℃, the speed of the roller is 240r/min, the number of rollers is 6, and the yarn is heat-set by the hot roller Rewinding to obtain warp and weft yarn lumps respectively;

(C) Warp the warp yarn mass obtained in (B) to obtain a warp beam, and weave the weft yarn mass obtained in (B) into a base fabric layer with a roll length of 800m and a width of 4.16m.

(2) Preparation of floor materials:

(A) Tuft the artificial turf silk on the woven fabric obtained in (1) above using a tufting machine according to the specified row and needle pitch to obtain a semi-finished lawn;

(B) Coating an adhesive on the back of the semi-finished lawn and curing it in an oven to form a back glue layer to produce an artificial lawn with a low shrinkage rate.

Comparative example 2

(1) Preparation of woven fabric:

The base fabric layer is the same as Comparative Example 1. The polyester non-woven fabric, glass fiber cloth, and glass fiber cloth are in the middle, and the base fabric layer is needle punched to form an integral woven fabric.

(2) Preparation of floor materials:

(A) Tuft the artificial turf silk on the woven cloth obtained in (1) with a tufting machine according to the specified row and needle pitch to obtain a semi-finished lawn;

(B) Coating an adhesive on the back of the semi-finished lawn and curing it in an oven to form a back glue layer to produce an artificial lawn with a low shrinkage rate.

Comparative example 3

(1) Preparation of woven fabric:

(A) Inject polypropylene (F401, Yangzi Petrochemical), polystyrene (GPPS 525, Guangzhou Petrochemical) and color masterbatch into the extruder at a mass ratio of 92:5:3 for extrusion and drawing;

(B) The yarn cooled by water is shaped by a hot metal roller, the temperature of the roller is 135℃, the speed of the roller is 210r/min, the number of rollers is 8, and the yarn is heat-set by the hot roller Rewind to obtain warp and weft yarn lumps respectively;

(C) The weft yarn mass obtained in (B) is shaped by a hot oven, the temperature of the hot oven is set to 105 ℃, and the shaping time is 20 hours. After the heat shaping is completed, take out the oven for standby;

(D) Warp the warp yarn mass obtained in (B) to obtain a warp beam, and weave the weft yarn mass obtained in (C) into a base fabric layer with a roll length of 800m and a width of 4.16m;

(F) The base cloth layer obtained by E and the grid cloth are used as a woven cloth.

(2) Preparation of floor materials:

(A) Tuft the artificial turf silk on the woven fabric obtained in (1) with a tufting machine according to the specified row and needle pitch to obtain a semi-finished lawn;

(B) Coating an adhesive on the back of the semi-finished lawn and curing it in an oven to form a back glue layer to produce an artificial lawn with a low shrinkage rate.

Performance Testing

Project 1: Yarn crystallinity test

Differential calorimetric scanning measurement method: take the heat-set yarn mass and cut it into pieces and place it in a crucible that has been peeled with tweezers, weigh it with a balance, and record the mass as Q(g); place the crucible in the DSC thermal analyzer In the sample cell, set the starting and ending temperature range: 25～200℃; heating rate: 10℃/min; pass N ₂ protection, N ₂ flow rate 50mL/min; use a thermal analyzer to automatically measure the heat of fusion, and record it as M(J). Calculate the degree of crystallinity from the following formula (detection of warp and weft yarns separately):

Wherein, ΔH _f represents the enthalpy of fusion (J/g) of the _{sample, ΔH f} ^* represents the enthalpy of fusion (J/g) when the crystallinity of the sample base polymer reaches 100%, and θ represents the degree of crystallinity. _{The ΔH f} ^* of PP at 100% crystallinity is 207.1 J/g.

Table 1 The crystallinity of yarns in each example

sample	Warp yarn crystallinity θ(%)	Weft yarn crystallinity θ(%)
Example 1	64	62
Example 2	68	69
Example 3	70	68
Example 4	62	64
Comparative example 1	42	42

Comparative example 3

50

66

Project 2: Yarn shrinkage detection

Refer to GB/T 6505-2017 "Test Method for Thermal Shrinkage of Chemical Fiber Filament". The specific method is: take the 100cm-long yarn mass after heat setting, put it in a hot oven, set the oven to 132°C, and test for 20 minutes. After the test, take out the yarn, cool it naturally to room temperature, measure the length of the yarn, and record it. It is L (cm), the test methods of warp and weft yarns are the same, and the yarn shrinkage rate η (‰) is calculated by the following formula:

Table 2 Yarn shrinkage rate of each example

sample	Warp yarn shrinkage η(‰)	Weft yarn shrinkage η(‰)
Example 1	6.3	6.5
Example 2	4.2	4.1
Example 3	3.5	4.0
Example 4	6.4	7.0
Comparative example 1	14.8	13.5
Comparative example 3	10.5	5.4

Project 3: Detection of shrinkage rate of woven fabrics and artificial turf

Take the warp shrinkage detection of woven fabric as an example. The specific method is: cut the woven fabric into a rectangular sample of 300 cm in warp direction and 20 cm in weft direction. Mark a measurement point, and use the same method to mark 3 corresponding measurement points on the other end. Put the woven fabric in a hot oven in a winding mode and time to test. The oven is set to 110°C and the test time is 1h. After the test, take out the woven cloth and spread it flat on the test bench. After it is naturally cooled to room temperature, measure its length according to the corresponding measuring point and record it as L (cm). The weft shrinkage of the woven cloth and the shrinkage detection method of artificial turf are similar to those Consistent, the shrinkage rate η(‰) is calculated as follows:

Table 3 Shrinkage rate of woven fabrics in each example

sample	Warp shrinkage rate of woven fabric η(‰)	Weft shrinkage rate of woven fabric η(‰)
Example 1	2.2	1.9
Example 2	2.1	2.2
Example 3	1.9	1.7
Example 4	1.3	1.3
Comparative example 1	14.7	14.2
Comparative example 2	10.1	9.2
Comparative example 3	9.8	1.6

Table 4 Shrinkage rate of floor covering materials in each example

sample	Warp shrinkage η(‰)	Weft shrinkage η(‰)
Example 1	2.3	1.8
Example 2	2.1	2.1
Example 3	1.7	1.8
Example 4	1.2	1.3
Comparative example 1	14.9	14.1
Comparative example 2	10.3	9.5
Comparative example 3	10.1	1.6

From the above performance test results, it can be concluded that the low shrinkage woven fabric of the present invention and the artificial turf made of the woven fabric have the following characteristics:

1. The low-shrinkage woven fabric of the present invention adds multi-step heat setting treatment in the production process of the base fabric layer, so that the floor material made of the woven fabric has lower thermal shrinkage under exposure and high temperature environments. The product has good thermal stability and resistance to deformation. It overcomes the problems of swelling, curling, deformation, and unevenness of the floor material in a high-temperature environment, and improves the service life and value of the floor material.

2. The shrinkage rate of the base fabric layer is negatively related to the crystallinity of the yarn. The main purpose of the heat setting process is to increase the crystallinity of the yarn, thereby improving the thermal stability of the yarn. It should meet the process requirements that the temperature is as high as possible and the time is as long as possible.

3. The higher the strength of the polymer substrate and the greater the crystallinity, the better the dimensional stability and the lower the thermal shrinkage rate. The introduction of low-shrinkage rate polymers into the PP substrate can improve the thermal stability of the base fabric layer and reduce Small shrinkage.

4. The introduction of glass fiber cloth into the woven fabric layer can greatly reduce the shrinkage of the floor material.

5. After testing, the paving material made of the low-shrinkage woven fabric of the present invention has a shrinkage rate of not more than 4‰, which is suitable for golf, hockey and other venues with high dimensional stability requirements, and greatly expands the application of artificial turf. Field, enhance the use value of paving materials.

The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this document, but should conform to the widest scope consistent with the principles and novel features disclosed in this document.

Claims (10)

1. A low-shrinkage woven fabric, which is characterized by comprising a base cloth layer, the warp and weft yarns of the base cloth layer are obtained by multi-step heat setting treatment;

   The base cloth layer uses polypropylene resin as the main raw material, and the mass percentage of the polypropylene resin in the base cloth layer is not less than 90%.
2. The low-shrinkage woven fabric according to claim 1, wherein the multi-step heat setting treatment of the warp and weft yarns of the base fabric layer includes at least one oven heat setting treatment, wherein the oven treatment temperature It is 100-130℃, and the treatment time is 5-24h.
3. The low-shrinkage woven fabric according to claim 1, wherein the raw material of the base fabric layer further comprises a low-shrinkage polymer resin, wherein the low-shrinkage polymer resin is selected from polyethylene terephthalate One or more of ester, nylon, polyphenylene sulfide, polystyrene, and polylactic acid.
4. The low-shrinkage woven fabric according to any one of claims 1 to 3, further comprising a composite layer, the composite layer is located outside the base fabric layer, and the composite layer includes but is not limited to Mixed cotton, mesh and non-woven fabrics.
5. The low-shrinkage woven fabric according to claim 4, further comprising a glass fiber cloth, the glass fiber cloth being located between the base cloth layer and the composite layer.
6. A method for preparing a low-shrinkage woven fabric according to any one of claims 1 to 5, wherein when the low-shrinkage woven fabric is a base fabric layer, the preparation method includes the following steps:

   (1) Inject polypropylene resin, color masterbatch and other additives into the extruder to extrude. The extruded fiber is cooled by water and subjected to hot roll heat setting treatment on a hot metal roller, and then winded to obtain warp yarn clusters. And the weft yarn group;

   (2) Put the warp yarn group and the weft yarn group into the oven for oven heat setting treatment, after the oven heat setting treatment is over, take out the yarn group for use;

   (3) Warp the warp yarn group after the oven heat setting treatment to obtain a warp beam, and weave the warp yarn group together with the weft yarn group after the oven heat setting treatment on the loom according to a certain roll length and width, namely Get low shrinkage machine woven fabric.
7. The method for preparing a low-shrinkage woven fabric according to claim 6, characterized in that, in step (1), the temperature of the heat roller heat setting treatment is 110-160°C, and the roller speed is 200-350r/ min, the number of rollers is 5-10.
8. A method for preparing a low-shrinkage woven fabric according to claim 6, characterized in that it further comprises the following steps: continue the low-shrinkage woven fabric obtained in step (3) to contact heat setting, hot air tentering setting or Infrared radiation stereotypes.
9. A low-shrinkage floor covering material, characterized in that it comprises the low-shrinkage woven fabric, textile fibers and a backing layer according to any one of claims 1-5, and the textile fiber tufts are woven in the low-shrinkage woven fabric. On the upper surface of the cloth, the adhesive layer is coated on the back surface of the low-shrinkage woven cloth.
10. A method for preparing a low-shrinkage paving material according to claim 9, characterized in that it comprises the following steps:

    (1) Use a tufting machine to tuft the textile fibers onto the low-shrinkage woven fabric to form semi-finished products according to the specified row and needle pitch;

    (2) Coating an adhesive on the back of the semi-finished product and curing it in an oven to obtain a low-shrinkage paving material.

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