TW202248486A - Structure and manufacturing process of environmentally friendly solvent-free heavyweight fabrics which has advantages of good firmness, cost reduction, yield improvement, smooth cloth surface, and environmentally friendly with no solvents - Google Patents

Abstract

The present invention relates to the structure and manufacturing process of an environmentally friendly solvent-free heavyweight fabric. During manufacturing, a high-denier polyester raw silk base material made of plain weave in the form of a weft-heavy flat weave pattern forms a plurality of three-dimensional protrusions arranged in a network on the polyester raw silk base material, and then the polyester raw silk base material is wound on a hollow bobbin with multiple openings so as to form a warp beam dyeing part on the polyester raw silk base material by controlling the density of the rolled cloth and the value of the dyeing pressure difference, and the polyester raw silk base material is then calendered twice using a three-axis hot press. Finally, a first coating module and a second coating module are used to introduce a TPU heat-molded imitation laminate layer and the polyester raw silk base material respectively, and to apply a moisture-hardening polyurethane hot-melt adhesive. By one-time full lamination, the polyester raw silk base material and the imitation laminate layer are compositely formed, and the composite coating has advantages of good firmness, cost reduction, yield improvement, smooth cloth surface, and environmentally friendly with no solvents.

Description

The structure and manufacturing process of environmentally friendly solvent-free heavyweight fabric

The present invention provides an environment-friendly solvent-free heavy fabric structure and its manufacturing process, especially a composite coating with good firmness, high warp and weft weave strength, three-dimensional and full cloth surface, uniform and saturated dyeing, smooth surface, and environmentally friendly solvent-free manufacturing process. And the structure and manufacturing process of the environment-friendly solvent-free heavy fabric that can reduce the manufacturing cost.

Press, in recent years, the bags are no longer mainly made of leather, but instead use fabric design, so that the bags meet the market needs such as fashion, practicality, beauty and personalization, and the bags will be affected by various external factors during use. Effects, such as surface wear affects its performance, wrinkle and bending affect durability, fabric surface pilling, insufficient strength leads to snagging breakage, and poor appearance durability.

To solve the above problems, the traditional manufacturing process includes tissue design, weaving, dyeing, calendering, gluing, and stitching testing. As shown in the first figure, it is a flow chart of traditional fabric processing. In the part of structure design and weaving, the traditional method is to use Air Textured Yarn (ATY) or sizing to improve cohesion, but the length of blown twist The physical properties of silk 91 decrease, which directly affects the tensile force and tear strength, and even has problems such as many loops, non-wear resistance, and dullness. The sizing process is complicated and costly, and it will also affect the dyeability and overall processing performance. If high denier polyester yarn (Polyester Fully Oriented Yarn, FOY) is used, although the high denier yarn has high strength and the polyester yarn has a metallic luster, there is no cohesion between the polyester yarns, and relative The physical characteristics of slippage, and in the weaving process, monofilaments are prone to problems such as fiber separation, slippage, yarn collapse, abrasion and hairiness weaving difficulties.

In addition, the heavy polyester cloth is a high-denier fabric with low tissue density and poor fiber permeability. If the traditional high-temperature and high-pressure overflow method is used for dyeing, the fabric is run in the dyeing machine 92 in the shape of a rope, which is easy to cause damage to the cloth surface. Poor flatness defects such as hooking, cracked yarn, water damage, chicken claw marks, irregular squares, and wrinkles will cause a decrease in yield and increase loss in process shrinkage. If warp beam dyeing is used to keep it in a flat state during the dyeing process, although the advantages of smooth cloth surface and smooth hand feeling can be obtained, the actual production process is heavy due to heavy There is a difference in the winding density of the high-density fabric roll on the warp beam. If the density is small, the fabric is easy to slip, and the outer layer is prone to color difference and color flower. The uneven penetration of the dye solution will cause a large color difference between the inner and outer layers, and it is easy to produce color flowers on the inner and outer layers. Even though the calendering is carried out by the traditional two-roll heat press machine 93, because only one pressing is performed, there are still problems such as insufficient compression, easy fluffing, large gaps between yarns, and uneven surface.

In addition, the extensive use of solvent-based adhesives in the coating of bag materials has caused serious environmental pollution. With the increasing awareness of environmental protection and the increasingly stringent environmental protection regulations, the processing chemicals used in fabric coating are not suitable for meeting the needs of low-carbon economy. Increasingly demanding. Because the surface of the fabric is uneven and very rough, most solvent-based adhesives and porous fabrics need to be coated 2 to 4 times, so heavy and high-density fabrics also need to be coated multiple times. The current process equipment is 94 The film-casting and coating process is the main method, and the film-casting method needs to use solvent-based PU glue on the front and back sides of the bag as a primer, and the next step should be done after the adhesive is dried and the solvent evaporates. Glue processing, let the back primer improve the adhesion between the coating and the base fabric, so that the coating forms a continuous film on the surface of the fabric to improve water resistance, but the front coating of the bag material is not good for obtaining good mechanical strength and wear resistance, etc. properties, it will be compounded with the film coating through the extruder. During the compounding process, factors such as cohesion, appearance and thickness of the compound film need to be controlled, so it has a great impact on the dimensional stability, hand feeling, cost and mechanical properties of the bag material. Affected, the manufacturing process is very cumbersome.

Therefore, how to solve the above-mentioned conventional problems and deficiencies is the direction that the inventor of the present invention and related manufacturers engaged in this industry want to research and improve urgently.

Therefore, in view of the above shortcomings, the inventor of the present invention collected relevant information, evaluated and considered in many ways, and based on years of experience accumulated in this industry, through continuous trials and modifications, he designed this composite coating. Excellent, high warp and weft weave strength, full three-dimensional cloth surface, uniform and saturated dyeing, smooth surface, environmentally friendly solvent-free manufacturing process, and an invention patenter for the structure and manufacturing process of environmentally friendly solvent-free heavyweight fabrics that can reduce manufacturing costs.

The main purpose of the present invention is to weave high-denier polyester raw yarn with weft-heavy flat weave, and carry out warp beam dyeing by controlling the cloth density and dyeing pressure difference, and then use solvent-free single-component adhesive to carry out double coating head Transfer and re-coating can improve the efficiency of looms, reduce yarn costs, increase the dyeing yield of heavy fabrics, reduce fabric process losses, meet environmental protection requirements, improve operating efficiency, and develop high-value bag fabrics.

To achieve the above purpose, the main structure of the present invention includes: a polyester raw silk base material, multiple three-dimensional protrusions, a warp beam dyeing part, an imitation coating layer, and a moisture-curing polyurethane hot-melt adhesive. The polyester raw silk substrate is formed by Weft Rib Weave, and its total denier number is above 600D. The three-dimensional protrusions are arranged in a network on the surface of the polyester raw silk substrate. The axial dyeing part is formed on the polyester raw silk substrate by controlling the cloth density and the dyeing pressure difference. The imitation coating layer is formed by heat-forming of solvent-free reactive polyurethane (Thermoplastic polyurethanes, TPU), and the moisture The hardening polyurethane hot melt adhesive (Polyurethane Reactive, PUR) adopts a full-scale transfer coating lamination method to make the polyester raw silk base material and the imitation coating layer compositely formed.

During production, the polyester raw silk is made into a polyester raw silk substrate with a weft-heavy flat weave pattern and a total denier number of more than 600D in a plain weave to provide the advantages of high strength, smooth surface, and luster. Using the three-dimensional protrusions to produce a three-dimensional, full and rough natural style, and then improving the warp beam dyeing technology, by winding the polyester raw silk base material on the hollow reel, the density of the cloth is gradually increased from the inside to the outside. At the same time, cooperate with the control of the dyeing pressure difference to form the warp beam dyeing part on the polyester raw silk base material, and then cooperate with the three-axis hot press to carry out the calendering of the dyed polyester raw silk base material twice to increase the weight. lb fabric dyeing yield and fabric smoothness, and reduce fabric process loss, and finally use the first coating module and the second coating module (double coating head coating system) to introduce an imitation coating layer heated and formed by TPU And the polyester raw silk substrate, and coated with moisture-curing polyurethane hot melt adhesive (PUR), so that the polyester raw silk substrate and the imitation coating layer can be compounded by one-time full lamination, However, it has the advantages of good composite coating firmness, cost reduction, yield improvement, smooth cloth surface, and environmentally friendly and solvent-free manufacturing process.

With the above-mentioned technology, we can solve the difficulties in weaving due to insufficient base material strength in conventional bag packaging materials, poor dyeability due to poor fiber permeability, solvent-based adhesives are often used in the process, multiple coatings are required, and the process is complicated and costly. Break through the problems to achieve the practical progress of the above advantages.

1: Polyester raw silk substrate

11: three-dimensional protrusion

2: Warp axis dyeing department

3: imitation coating layer

4: Moisture hardening polyurethane hot melt adhesive

5: Hollow Scroll

51: opening

6: dye tank

7: Three-axis heat press machine

8: Double coating head transfer coating system

81: The first coating module

811: Cutter shaft

812: Feed shaft

813: transfer axis

82: The second coating module

821: Cutter shaft

822: Feed shaft

823: transfer axis

83: The first adjustment gap

84: Second adjustment gap

91: Filament

92: dyeing machine

93: Two-roll heat press

94: Process equipment

The first figure is the flow chart of traditional fabric processing.

The second figure is a three-dimensional perspective view of a preferred embodiment of the present invention.

The third figure is a block flow diagram of a preferred embodiment of the present invention.

Figure 4 is a schematic diagram of warp beam dyeing in a preferred embodiment of the present invention.

Figure 5 is a schematic diagram of triaxial calendering in a preferred embodiment of the present invention.

Figure 6 is a schematic diagram of the overall lamination of the preferred embodiment of the present invention.

In order to achieve the above-mentioned purpose and effect, the technical means and structure adopted by the present invention are hereby illustrated in detail with respect to the preferred embodiments of the present invention. Its features and functions are as follows, so that it can be fully understood.

Please refer to the second figure to the sixth figure, which are stereoscopic perspective views of the preferred embodiment of the present invention to a full bonding schematic diagram. It can be clearly seen from the figures that the present invention includes:

A polyester raw silk base material 1 is molded with a weft-rib weave (Weft Rib Weave), and its total denier number is more than 600D, and a plurality of three-dimensional net-like arrangements are formed on the surface of the polyester raw silk base material 1. protrusion 11;

A warp beam dyeing part 2 is formed on the polyester raw silk substrate 1 by controlling the cloth density and the dyeing pressure difference;

An imitation coating layer 3 is heat-molded by solvent-free reactive polyurethane (Thermoplastic polyurethanes, TPU); and

A moisture-curing polyurethane hot-melt adhesive 4 (Polyurethane Reactive, PUR) is formed by compounding the polyester raw silk base material 1 and the imitation coating layer 3 by using a full-scale transfer coating lamination method.

And the manufacturing process of a kind of environment-friendly solvent-free heavy fabric of the present invention, wherein mainly comprises:

(a) Fabric design: the polyester raw silk base material 1 is made into a weft rib weave (Weft Rib Weave) pattern with a plain weave, and its total denier number is more than 600D;

(b) Weaving: forming a plurality of three-dimensional protrusions 11 arranged in a network on the surface of the polyester raw silk substrate 1;

(c) Substrate winding: the polyester precursor substrate 1 is wound on the hollow reel 5, which has a plurality of openings 51, and the polyester precursor substrate 1 from the inside to the outside The winding density is getting higher;

(d) Beam dyeing: place the polyester precursor base material 1 and the hollow reel 5 in the dyeing tank 6, and control the dyeing pressure difference to form a beam dyeing process on the polyester precursor base material 1. part 2;

(e) calendering: using a three-axis hot press 7 to carry out calendering twice on the dyed polyester raw silk substrate 1;

(f) Gluing on the first coating head film layer: Utilize a first coating module 81 to import an imitation coating layer 3, and apply moisture-curing polyurethane hot melt adhesive 4 (Polyurethane Reactive) on the imitation coating layer 3 , PUR), the imitation coating layer 3 is heat-molded by solvent-free reactive polyurethane (Thermoplastic polyurethanes, TPU);

(g) Glue on the substrate of the second coating head: Utilize a second coating module 82 to introduce the calendered polyester precursor substrate 1, and apply moisture-curing polyurethane hot melt adhesive 4 (Polyurethane Reactive , PUR); and

(h) Coating composite: the imitation coating layer 3 and the polyester raw silk base material 1 after coating the moisture-hardening type polyurethane hot melt adhesive 4 are carried out in a one-time comprehensive lamination, so that the polyester raw silk base material 1 and the imitation coating layer 3 are compositely formed.

Wherein, the warp direction density of the polyester precursor base material 1 is 40 to 46 strands per inch, and the weft density is 22 to 28 strands per inch, and the cloth density of the polyester strand base material 1 is average The hardness is Shore hardness 55A to 66A, the dyeing pressure difference of the polyester raw silk base material 1 is 3 kg to 5 kg per square centimeter, and the tension of the polyester raw silk base material 1 is controlled at a width shrinkage rate of 25 mm (mm) to 40 millimeters (mm), and wherein the first coating module 81 has a knife shaft portion 811, a material feed shaft 812, and a blade between the knife shaft portion 811 and the material feed shaft 812. Transfer shaft 813, and a first adjustment gap 83 is formed between the cutter shaft portion 811 and the transfer shaft 813, a second adjustment gap 84 is formed between the transfer shaft 813 and the feeding shaft 812, and the same second coating mold The set 81 also has a corresponding cutter shaft portion 821 , feeding shaft 822 , and transfer shaft 823 .

Through the above description, the structure of this technology can be understood, and according to the corresponding cooperation of this structure, the composite coating can be achieved with good firmness, high warp and weft weave strength, three-dimensional and full cloth surface, uniform and saturated dyeing, smooth and smooth surface, The process is environmentally friendly, solvent-free, and can reduce manufacturing costs. The detailed explanation will be explained below.

It can be clearly seen from the second and third figures that, first of all, in terms of fabric design and weaving, the fabric in this embodiment is developed as a bag material as an example, and fiber selection and tissue design are important in the development of bag materials. One of the key points, so the selection of raw materials is made of high-denier polyester fiber (Polyester Fully Oriented Yarn, FOY) as the main material, and with the high-quality fabric appearance structure design, the polyester fiber substrate 1 is produced, with The basic tear resistance and tensile strength of the fabric are greatly improved, so that the fabric is firm and wear-resistant, and at the same time has a lustrous metallic feel. Therefore, in the present invention, it is necessary to select a suitable fabric structure and grasp the importance of the relationship between the particularity of the raw material. Therefore, in order to create a full and rough natural style, the warp and weft of the cloth body is designed to protrude from the cloth surface. The three-dimensional protruding part 11 is the so-called protruding pin point. However, although the ordinary plain weave with one up and one down can form a protruding pin point, it is not protruding enough and full. Therefore, this The invention uses plain weave variation to design the weft-heavy flat weave structure to produce a three-dimensional protrusion 11 that meets the requirements, and has the best structural stability and maximum fabric strength.

Among them, the denier number of the polyester raw yarn is better than 600D. Specifically, because the design of the warp and weft denier numbers is very close to the protrusion of the pin point, so the present invention is based on warp direction 250D plying to 500D, and double The roots are combined and formulated into 1000D, which makes the fabric texture present a three-dimensional rough feeling, and whether the design of the warp and weft density is appropriate or not is the main factor determining the appearance of the fabric. Excessive warp and weft density will make the fabric feel hard, poor in elasticity, and high in cost If the warp and weft density is too small, it will affect the fullness of the fabric and easily cause displacement. Therefore, the present invention is carried out with a warp density of 40 threads/inch to 46 threads/inch and a weft density of 22 threads/inch to 28 threads/inch.

As shown in the third and fourth pictures, the warp beam dyeing technology for heavy-weight cloth is aimed at overcoming the shortcomings of the traditional high-pressure overflow dyeing machine, which may easily cause the cloth surface to be scratched, water damage, chicken claw marks, and irregular squares. , the present invention is carried out by the high-temperature and high-pressure cloth warp beam dyeing method with higher technical level, and develops heavy fabrics with high level dyeing property, good saturation and good flatness. However, in the actual warp beam dyeing of heavy cloth, if the parameters of the cloth density, dyeing pressure difference or dyeing load are not well designed, it is easy to cause the fabric to shift during the dyeing process, the color difference between the inner and outer layers of the warp beam, or the surface of the fabric to be damaged. Problems such as water ripples occur. Therefore, the design of the present invention for the cloth rolling density is to make the winding density of the polyester raw silk substrate 1 gradually increase from the inside to the outside, and the average hardness of the warp beam is 55A~65A. Uneven tension will cause uneven penetration of the dyeing solution, resulting in color difference and other defects. Therefore, the difference in the density of the inner, middle and outer layers of the polyester raw silk substrate 1 on the hollow reel 5 is used to make the polyester raw silk substrate The material 1 is flat on the hollow reel 5 and is not easy to slip. At the same time, the opening 51 on the hollow reel 5 is used to make the liquid flow in the dyeing tank 6 fully penetrate the outer layer, so that the polyester raw silk substrate 1 is evenly colored. Generally, when warp beam dyeing, the dye solution is forced to penetrate the fabric by high pressure, which will easily cause shifting and left-right color difference due to excessive pressure difference, or the dye solution cannot penetrate the polyester raw silk substrate 1 fabric surface due to too small pressure difference. Severe discoloration occurs. Therefore, the present invention formulates the most suitable dyeing pressure difference value of 3kg/cm ² ~5kg/cm ² according to the heavy fabric density and the optimum cloth volume, and the desired warp beam dyeing part 2 of the present invention is produced by the above operation.

As shown in Figure 3 and Figure 5, in terms of the surface treatment of heavyweight polyester fabrics, heavyweight polyester fabrics have a high denier number, there are certain gaps between interweaving points, and the surface of the fabric has concave and convex interweaving points. The surface hairiness of the pound fabric is smooth, the gaps between the yarns are reduced, and the structure is tight, so as to ensure the flatness of the cloth surface during the coating composite processing. The fabric must be calendered to achieve the ideal density, thickness and feel to ensure the composite The surface is flat and meets the requirements of bonding strength. Specifically, the present invention uses a three-axis heat press 7 to perform calendering treatment. Compared with a traditional two-roll heat press, the three-axis calender can be calendered twice at one time, so that The polyester raw silk base material 1 is compressed, so that the hairiness of the surface monofilaments becomes flattened, the gaps between the yarns become smaller, and the surface is smooth and compact. As for the setting of calendering parameters, the control of tension and temperature in the calendering process has a great influence on the forming properties of heavy fabrics. If the tension is too small, creasing will occur, and if the tension is too high, the width will be reduced. Therefore, the present invention controls the tension at Width shrinkage rate 25mm~40mm.

As shown in Figure 3 and Figure 6, as for environmental protection and coating compounding issues, the imitation coating layer 3 of the present invention is a solvent-free one-component reactive polyurethane component, and isocyanate and polyol are used as main raw materials. It synthesizes a prepolymer under certain conditions, so that the reactive polyurethane material has the characteristics of tough structure, good flexibility, and high bonding strength after forming a film. In order to reduce the melt viscosity and melting temperature, improve the viscosity stability during melting, and reduce cost, simplify the production process, and improve mechanical properties such as film-forming initial adhesion, hydrolysis resistance, and flexibility, and use moisture-curing polyurethane hot-melt adhesive 4 (Polyurethane Reactive, PUR) as the adhesive to meet environmental protection requirements , Breaking through the film composite bonding strength of heavy fabrics.

Specifically, the present invention utilizes a double-coating head transfer coating system 8 for coating. Since the traditional knife coating is to fill up the gap (extrusion) between the uneven fabric surface and the rigid metal knife, the sizing material will be filled with the fabric yarn The top and bottom of the thread fill the gaps in the fabric with thicker glue. Too much glue will penetrate into the fabric and cause less bonding, which will affect the bonding strength of the material when it is compounded. The double-coating head transfer coating system 8 of the present invention is a multi-axis system, and the first coating module 81 has a cutter shaft portion 811, a transfer shaft 813, and a feeding shaft 812 from left to right, for conveying the imitation coating layer 3, and Apply moisture-curing polyurethane hot-melt adhesive 4 on the imitation coating layer 3. The second coating module 82 has a knife shaft part 821, a transfer shaft 823, and a feeding shaft 822 from right to left for conveying polyester raw silk base material 1, and apply moisture-curing polyurethane hot melt adhesive 4 on the polyester raw silk base material 1, and a first adjustable width is formed between the knife shaft part 811 (or 821) and the transfer shaft 813 (or 823). An adjustment gap 83, an adjustable second adjustment gap 84 is also formed between the transfer shaft 813 (or 823) and the feed shaft 812 (or 822), so as to control the penetration amount of the moisture-curing polyurethane hot melt adhesive 4 Therefore, the present invention can form the sizing material of the same thickness on the transfer shafts 813, 823, and then transfer to the polyester raw silk base material 1 and the imitation coating layer 3. At this time, the shearing force is smaller than that of the scraper, so that the polyester raw silk The coating effect of each point on the silk substrate 1 (that is, the peaks and valleys of the yarn) is consistent. When the protruding part of the yarn has more glue, the amount involved in bonding is sufficient, and a significant improvement in mechanical properties will be obtained. The control of the penetration of air-curing polyurethane hot melt adhesive 4 can overcome the defects that are prone to appear in many coatings, and the fabric feels softer after transfer coating and compounding. In addition, the dual-head transfer coating system 8 can be adapted to open coating structures and full coating without mechanical changes. Covering coating structure, the depth of the coating liquid penetrating into the polyester raw silk substrate 1 or the imitation coating layer 3 can be adjusted by increasing or decreasing the first gap 83, and the second gap between the transfer shafts 813, 823 and the substrate. Adjust the size of the gap 84 and the speed difference to adjust, and carry out semi-permeable processing or full-coating grain processing.

However, the above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all simple modifications and equivalent structural changes made by using the description and drawings of the present invention should be treated in the same way. Included in the scope of the patent of the present invention, it is jointly stated.

To sum up, the structure and manufacturing process of the environmentally friendly solvent-free heavyweight fabric of the present invention can indeed achieve its effect and purpose when used, so the present invention is an invention with excellent practicability, and it is in line with the application for an invention patent The essential requirement is to file an application in accordance with the law. I hope that the review committee will approve the invention as soon as possible to protect the hard work of the inventor. If the review committee has any doubts, please feel free to send a letter to instruct the inventor. I will do my best to cooperate, and I really appreciate it.

1: Polyester raw silk substrate

11: three-dimensional protrusion

2: Warp axis dyeing department

3: imitation coating layer

4: Moisture hardening polyurethane hot melt adhesive

Claims (10)

An environment-friendly solvent-free heavy fabric structure, which mainly includes: A polyester raw silk base material, which is formed by Weft Rib Weave (Weft Rib Weave), and its total denier number is more than 600D, and forms a plurality of three-dimensional protrusions arranged in a network on the surface of the polyester raw silk base material department; A warp beam dyeing section is formed on the polyester raw silk substrate by controlling the cloth density and the dyeing pressure difference; An imitation coating layer, which is thermoformed by solvent-free reactive polyurethane (Thermoplastic polyurethanes, TPU); and A moisture-curing polyurethane hot-melt adhesive (Polyurethane Reactive, PUR), which uses a full-scale transfer coating lamination method to make the polyester raw silk base material and the imitation coating layer compositely formed. The structure of the environmentally friendly solvent-free heavyweight fabric as described in item 1 of the patent application, wherein the warp density of the polyester raw silk substrate is 40 to 46 threads per inch, and the weft density is 22 threads per inch to 28. The structure of the environment-friendly solvent-free heavyweight fabric as described in item 1 of the scope of the patent application, wherein the average hardness of the cloth density of the polyester raw silk base material is Shore hardness 55A to 66A. The structure of the environment-friendly solvent-free heavyweight fabric described in item 1 of the patent application, wherein the dyeing pressure difference of the polyester raw silk base material is 3 kg to 5 kg per square centimeter. The structure of the environment-friendly solvent-free heavyweight fabric as described in item 1 of the scope of the patent application, wherein the tension of the polyester raw silk substrate is controlled at a width shrinkage rate of 25 millimeters (mm) to 40 millimeters (mm). A process for the production of environmentally friendly solvent-free heavyweight fabrics, which mainly includes: (a) The polyester raw silk substrate is made into a weft rib weave (Weft Rib Weave) pattern with a plain weave, and its total denier number is more than 600D; (b) forming a plurality of three-dimensional protrusions arranged in a network on the surface of the polyester raw silk substrate; (c) winding the polyester precursor base material on a hollow reel, the hollow reel has a plurality of openings, and the winding density of the polyester precursor base material is gradually higher from the inside to the outside; (d) placing the polyester raw silk substrate and the hollow reel in a dyeing tank, and controlling the dyeing pressure difference to form a warp beam dyeing portion on the polyester raw silk substrate; (e) Carrying out calendering twice to the dyed polyester raw silk base material by a three-axis hot press; (f) Utilize a first coating module to introduce an imitation coating layer, and apply moisture on the imitation coating layer Hardened polyurethane hot melt adhesive (Polyurethane Reactive, PUR), the imitation coating layer is formed by heating of solvent-free reactive polyurethane (Thermoplastic polyurethanes, TPU); (g) using a second coating module to introduce the calendered polyester precursor substrate, and apply moisture-curing polyurethane hot-melt adhesive (Polyurethane Reactive, PUR) thereon; and (h) Carry out one-time comprehensive lamination of the imitation coating layer and the polyester raw silk base material after the moisture-curing polyurethane hot melt adhesive is applied, so that the polyester precursor base material and the imitation coating layer are compounded forming. The manufacturing process of the environmentally friendly solvent-free heavyweight fabric as described in item 6 of the patent application, wherein the warp density of the polyester raw silk substrate is 40 to 46 threads per inch, and the weft density is 22 threads per inch to 28. The manufacturing process of the environment-friendly solvent-free heavyweight fabric as described in item 6 of the scope of the patent application, wherein the dyeing pressure difference of the polyester raw silk base material is 3 kg to 5 kg per square centimeter. The manufacturing process of the environmentally friendly solvent-free heavyweight fabric as described in item 6 of the patent application, wherein the tension of the polyester raw silk base material is controlled at a width shrinkage rate of 25 millimeters (mm) to 40 millimeters (mm). The manufacturing process of the environmentally friendly solvent-free heavy fabric as described in item 6 of the scope of the patent application, wherein the first coating module and the second coating module have a cutter shaft, a feeding shaft, and a The transfer shaft between the cutter shaft part and the feeding shaft, and a first adjustment gap is formed between the cutter shaft part and the transfer shaft, and a second adjustment gap is formed between the transfer shaft and the feeding shaft.

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