TW201209243A - Method for manufacturing synthetic leather - Google Patents

Abstract

A method for manufacturing synthetic leather comprises steps of preparing a thin film, a grain transfer layer and a base layer. The thin film and the grain transfer layer are thermally pressed at multi-time and multi-stage utilizing multiple hot press forming machines. The base layer is pasted to the thin film prior to one of the hot press forming machines. The grain transfer layer is torn off after performing hot pressing, thereby producing synthetic leather in which a surface has grains. Alternatively, a thin film and a grain transfer layer can also be prepared. The thin film and the grain transfer layer are thermally pressed at multi-time and multi-stage after overlapping. The grain transfer layer then is torn off to produce the thin film in which the surface has grains. Alternatively, a thin film and a base layer can also be prepared. The base layer is pasted to the thin film prior to the hot press forming machines. Synthetic leather is produced after performing hot pressing.

Description

201209243 VI. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to a synthetic skin, and more particularly to a method of producing a synthetic skin. [Prior Art] A general synthetic skin incorporates a film on the surface of a substrate in order to produce desired physical properties and hand. And the difference in the material or process of the synthetic skin film will have different shortcomings: In the synthetic skin with thermoplastic film, the abrasion resistance and weather resistance are insufficient, although the film made of PVC and TPU is good. The wear resistance, but the film made of PVC will be difficult to recycle due to pVC, plus the burning may produce Dioxin, the environmental protection industry began to appear to disable the sound of PVC. In the case of a TPU film (for example, the CN 1125111C patent), there are defects such as high price and poor yellowing resistance. In the case of a synthetic skin having a film of a thermosetting material (such as a dry PU or a wet pu), the PU film is insufficiently resistant to hydrolysis, and the product is used for a short period of time, due to the solvent used in the manufacturing process, water and air. Pollution is generated and the price is still high. The film is made of other thermosetting materials (such as rubber) and has the main disadvantages: in the case of non-continuous embossing products, it is formed by hot pressing of a fixed mold, and the high heat and high pressure generated by hot pressing will cause the material. It is difficult to separate from the mold. 'Generally, small-area products must use a release agent, but it is almost impossible to separate the texture of large-area cookware. It can only limit the products used to make certain characteristics, such as raincoats. 201209243 SUMMARY OF THE INVENTION Therefore, the object of the present invention is to provide a method for producing a synthetic skin which is capable of continuous heat-forming and at the same time producing embossed. Another object of the present invention is to provide a method of producing a synthetic skin having a film having a textured surface by a simple step. Still another object of the present invention is to provide a method for producing a high-capacity continuously heat-wrinkable synthetic skin. μ Thus, the method for producing a synthetic skin of the present invention comprises the steps of: (α) preparing a continuous thin m, a continuation of a grain transfer layer and a continuous base layer of a film to contain an uncompleted crosslinking reaction. The thermoplastic composite material is made of 'the texture of the grain transfer layer has a continuous grain; (B) the film is laminated with the grain transfer, and passes through a plurality of hot press molding machines in a stepwise manner and is hot pressed in a multi-stage and multi-stage manner , the film is subjected to a crosslinking reaction and embossing; (C) the substrate is bonded to the film before the hot press molding machine, and the film can be consolidated by hot pressing of the hot press molding machine; D) tearing off the grain transfer layer to produce a synthetic skin having a textured surface. The method for producing a synthetic skin of the present invention comprises the steps of: (A) preparing a continuous thin crucible and a continuous texture transfer layer, the film being made of a thermoplastic composite material containing an uncompleted crosslinking reaction, The surface of the drink transfer layer has a continuous grain; (B) the film is laminated with the grain transfer, and is passed through a plurality of hot press molding machines in a stepwise manner, and is hot pressed in a multi-time and multi-stage manner to complete the crosslinking of the film. Reacting and forming embossing; (c) tearing away from the textured transfer layer' to produce a film having a textured surface. The method for producing a synthetic skin of the present invention comprises the following steps: (A) made 201209243 a continuous film and a continuous base layer made of a thermoplastic composite material containing an uncompleted crosslinking reaction; (B) The film is passed through a plurality of hot press molding machines in a stepwise manner and is hot pressed in a multi-time, multi-stage manner to complete the crosslinking reaction; (C) the substrate is bonded to the film before one of the thermal molding machines 'The hot press molding machine can be consolidated with the film by hot pressing, that is, a synthetic skin is obtained. The effect of the invention is that the film has good physical properties due to the completion of the crosslinking reaction, and the manufacturing process does not pollute the environment, and the finished product does not leave harmful substances, and the continuous hot pressing can be mass-produced and the manufacturing cost can be reduced. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments of the drawings. Before the present invention is described in detail, it is to be noted that in the following description, similar elements are denoted by the same reference numerals. As shown in FIG. 1, FIG. 2 and FIG. 3, a first preferred embodiment of the method for producing a synthetic skin of the present invention comprises the following steps: Step 1: preparing a continuous film 2 〇, a continuous pattern transfer Layer 30 and a continuous base layer 10. The X soil layer 10 may be a fabric, a foamed material or a foamed material bonded to a fabric. The film 20 is made of a thermoplastic composite material containing an uncompleted crosslinking reaction, such as a thermoplastic polyurethane elastomer (ΤΡϋ), a polyolefin-based elastomer.

Body (〇) Nitrile Butadiene Rubber (NBR 201209243), Methacrylate Butadiene

Rubber, referred to as MBR), styrene-butadiene rubber (Styrene Butadiene

Rubber ‘SBR for short), ethylene-vinyl acetate copolymer (EVA), and the like. The texture transfer layer 30 of the present embodiment is coated with a rubber material 32 on the substrate 31 of the textile fabric. The rubber material 32 is pre-heated and cross-linked and embossed. Step 2: Transfer the film 20 to the texture After the film 30 is superposed, the laminated film 20 and the grain transfer layer 30 are heated and pressurized by a pair of hot pressing wheels 100, and the pressing temperature of the hot pressing wheel 1〇〇 The film 2 is not yet touched by the crosslinking reaction, and the film 2 is bonded to the groove transfer layer 30 to cause no bubble generation between the film 20 and the grain transfer layer 3〇. Step 2. The laminated film 2〇 and the grain transfer layer 3〇 are passed through a plurality of hot press molding machines in a stepwise manner, and continuous hot pressing is performed in a multi-time and multi-stage manner to complete the film 20 In the cross-linking reaction, the surface of the film 2 is formed and textured by the texture transfer layer 30. Step 4: The base layer 10 is bonded to the film 20 before one of the hot press molding machines 2, and is heat-pressed by the hot press molding machine 2 to be consolidated with the film. Each of the hot press forming machines 200 has a hot pressing roller 21 〇 and a conveying belt wound around the outer side of the hot pressing roller 21 , and the hot pressing roller 21 〇 cooperates with the conveying belt 22G to perform the film 2 〇 Continuously hot pressing, the base layer 1 , the film 2G and the grain transfer layer 3 () are fed each time and through the hot press roller (4) and the length of each section between the conveyor belt 22G, less than each heat Roller wheel 201209243

The bonding length of 210 and the corresponding conveyor belt 220, for example, the bonding length of the hot pressing roller 210 and the conveyor belt 220 is 60 cm, and the base layer 1 , the film 20 and the grain transfer layer 3 are horizontal. The length of each feed is 20cm, and it is assumed that the completion of the cross-linking reaction of the film is completed in 3 minutes, and the number of hot presses per 2 times of each hot press is 3 times, 3 times each time. In seconds, the cross-linking reaction is completed by a total of 6 times by two hot press molding machines, and thus, the setting of the hot press molding machine 2, and the base layer 10' The film 20 and the grain transfer layer 3 are stepwise fed and time-divisionally hot pressed, so that the base layer 1G, the film 2 () and the grain transfer layer 30 can be multi-time and multi-stage continuous hot pressing. And can achieve embossed seamless 'to avoid discontinuous embossing. V is further as shown in FIG. 2, tearing off the grain transfer layer and the

The texture transfer layer 30 can be re-wound and recycled for further use, so that a composite Z skin can be obtained. The synthetic skin 4G has the base layer 1 () and a film having a grain on the surface 20 °. The manufacturing method of the present invention cooperates with the manufacturing process. The device can produce the following effects: 1. The texture transfer layer 3 () of the above embodiment of the present invention utilizes a woven fabric as a substrate 3 and applies a polyester material 32 on the substrate 31 (liquid or solid white After the heating and cross-linking and embossing of the (four) material 32, the texture is calendered on the texture transfer layer 3〇, and the texture transfer layer 3 can be used multiple times, and can be continued, 丨_ pressed into _ line break. «City 2, the use of these thermoforming machines 2〇〇 can not only carry out multi-time, multi-stage 201209243 continuous hot pressing, in order to achieve the purpose of continuous embossing, and can increase production capacity. 3. In combination with the selection of the base layer of different materials, it is possible to select a suitable fit with the film 20 before the hot press molding machine 200 in the proper position (as shown by the solid line or the imaginary line in FIG. 3), that is, the base layer of different materials. 10 Different from the position and time of the consolidation of the film 20, it is possible to produce a synthetic skin with different characteristics, and the composition can be produced without any contamination. The manufacturing process does not pollute the environment, and the finished product does not leave harmful substances. 5. The film 20 has good physical properties such as abrasion resistance, weather resistance, hydrolysis resistance, etc. due to completion of crosslinking reaction, and has a long service life. Eight large output, low equipment costs, and competitive prices. 17. The thin film 20 has a thin thickness, a small amount of unit, and a low cost, and the film 20 has a thinness of the cross-linking reaction. The thickness is extremely thin, and the user can meet the quality requirements, and the touch is light and soft. 8. Due to the completion of the cross-linking reaction, more recycled materials can be added to provide environmental (four) and low-cost products. The value of the transfer layer is that the grain transfer layer can also be a textured metal sheet or a metal plate (not shown) with a grain pattern and using a release paper with a grain, a textile, The embossed metal sheet or metal plate can also be made into a synthetic skin having a continuous texture in combination with the above steps. And because the base I 10 can be a fabric, a foamed material or a -foamed material. ^^上上' Therefore, the synthetic skin obtained by the above embodiment of the present invention can be a combination of the base layer 1 of the fabric and the film 2〇, which can be the base layer of the 201209243 foamed material and the combination of the film. . After the base layer i 发泡 of the foamed material is combined with the film, the base layer 10 can also be adhesively bonded to a fabric. As shown in FIG. 4, the hot press molding machine 200 applied to the method for manufacturing a synthetic skin according to the above embodiment of the present invention has a platform structure, and each has an upper hot plate 210', one corresponding to the upper portion. The hot platen 220'', the base layer 1'', the film 20 and the grain transfer layer 3〇 are fed each time and pass between the upper and lower heat platens 210, 220, Each length is smaller than the length of the upper and lower hot platens 210, 220' corresponding to the horizontal direction. Further, a synthetic leather 4 can be obtained by using these hot press molding machines 200' in conjunction with the above steps. As shown in FIG. 5, in a second embodiment of the method for manufacturing a synthetic skin of the present invention, a continuous film, a continuous grain transfer layer and a continuous base layer may be prepared in advance, and the base layer may be a foamed material or A foaming material is bonded to a fabric, or may be natural leather or synthetic leather (for example, synthetic leather made of TPU, R TPU, PU, p VC, etc., and the base layer is temporarily not used, and then used as shown in the figure The hot press wheel 100 shown in FIG. 3 cooperates with the heat and pressure of the laminated film and the grain transfer layer, and then uses the hot press forming machine 200, 200' as shown in FIG. 3 or FIG. Performing multi-time, multi-stage continuous hot pressing to complete the cross-linking reaction of the film. The base layer is then adhered to the thin layer, and then the film is transferred away from the grain transfer I to obtain a film having a grain on the surface. The synthetic skin having the same structure and the same effect as the first embodiment can be obtained. Since the base layer can be a fabric, a foamed material or a foamed material bonded to the fabric, the present invention is the first to be used. The synthetic skin obtained by the embodiment may be the base layer of the fabric and the thin The adhesion of the film guiding film may be the bonding of the base layer of the foaming material to the film of 201209243 or the bonding of the film to the base layer of the foaming material. The third embodiment of the method for producing a skin is used for producing a synthetic skin having a flat surface, and is also prepared as a continuous film and a "continuous base layer" which is a thermoplastic composite material containing an uncompleted crosslinking reaction. The film is formed in a stepwise manner by a plurality of hot press molding machines as shown in FIG. 3 or FIG. 4, and is subjected to hot pressing in a multi-stage manner to complete the crosslinking reaction. The base layer is bonded to the film before the hot press forming machine 200, 200, and the film is consolidated by hot pressing of the hot press forming machine to obtain a synthetic skin. It is worth mentioning that When the film of the embodiment is a transparent material, since the film is completely sturdy and wear-resistant due to the crosslinking reaction, the grain on the surface of the substrate can be displayed through the film, so that the material and the texture of the substrate can be different. System A more diverse synthetic skin is made. The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the scope of the patent application and the description of the invention are generally made. The simple equivalent changes and modifications are still within the scope of the present invention. [Simplified Schematic] FIG. 1 is a flow chart illustrating a first preferred embodiment of the method for manufacturing a synthetic skin of the present invention; 2 is a schematic view showing the molding of a preferred embodiment of the present invention; and FIG. 3 is a schematic drawing of a molding operation of the above preferred embodiment of the present invention, illustrating the use of a plurality of hot press molding machines and performing heat in a multi-time, multi-stage manner; 10 201209243 FIG. 4 is a schematic view showing another molding operation of the above preferred embodiment of the present invention, illustrating the use of a plurality of hot press molding machines and performing hot pressing in a multi-time, multi-stage manner. FIG. 5 is a second preferred embodiment of the present invention. Flowchart; and Figure 6 is a flow chart of a third preferred embodiment of the present invention.

11 201209243 [Description of main component symbols]

10... •...base layer 200····...hot press molding machine 20...•...film 210 ..... hot pressing roller 30... •...i road transfer layer 220 .... conveyor belt 220 31...... ...substrate 200,...Hot press molding machine 32...•...矽胶材 210,...上上压压板40...•...synthetic skin 220,...lower hot platen 100...•...hot pressing Wheel 12

Claims (1)

201209243 VII. Patent application scope: 1. A method for manufacturing synthetic skin, comprising the following steps: (A) preparing a continuous film, a continuous grain transfer layer and a continuous base layer of the film to contain unfinished The reaction layer is made of a thermoplastic composite material, and the surface of the grain transfer layer has a continuous grain; (B) the film is laminated and transferred to the grain, and passes through a plurality of hot press molding machines in a stepwise manner, and is multi-timed and multi-staged The method is hot pressed to complete the cross-linking reaction and form embossing; (C) the base layer is bonded to the film before one of the hot press forming machines, and the film is produced by hot pressing of the hot press forming machine. Consolidation; and (D) tearing off the grain transfer layer to produce a synthetic skin having a textured surface. 2. The method for producing a synthetic skin according to the above application, wherein the hot press forming machine to which the step (B) is applied has a hot pressing roller and a coil wound around the hot pressing roller. Conveyor belt, in the step (c), the hot pressing roller cooperates with the conveyor belt to continuously heat-press the base layer, the film and the grain transfer layer, and the base layer, the film and the grain transfer layer are fed each time. And the length of each section between the hot pressing roller and the conveyor belt is smaller than the bonding length of each hot pressing roller and the corresponding conveyor belt. The manufacturing method of the synthetic skin according to the first aspect of the invention, wherein the hot press forming machine to which the step (B) is applied has an upper portion, and the wild plate corresponds to the upper thermal calendar. The lower hot pressing plate, the film and the transfer layer are fed each time and the length of each section between the upper and lower hot pressing plates is 13 201209243 degrees less than the length corresponding to the horizontal direction of the upper and lower hot pressing plates. 4. The method for producing a synthetic skin according to claim 2, wherein the hot press molding machine used in the step (B) further has a pair disposed before the first hot press molding machine. The hot pressing wheel can heat-bond the film to the texture transfer layer, and the pressing temperature of the hot pressing wheel has not touched the crosslinking reaction. 5. According to the scope of the patent application The method for producing a synthetic skin, wherein the texture transfer layer prepared in the step (A) is selected from the group consisting of a coating on a substrate - an embossed stone enamel material, a patterned textile, and a residual Any of the patterned metal sheets, prepared in the step (A) The layer is selected from the group consisting of a fabric, a foamed material, and a foamed material bonded to the fabric. 6. A method for producing a synthetic skin comprising the following steps: (A) preparing a continuous film and a continuous texture transfer layer The film is made of a thermoplastic composite material containing an uncompleted crosslinking reaction, and the surface of the grain transfer layer has a continuous grain; (B) the film is laminated with the grain transfer and passes through a plurality of hot presses in a stepwise manner and Performing rail pressure in a multi-time, multi-stage manner to complete the cross-linking reaction and forming embossing; and (8) tearing off the grain transfer layer to obtain a thin surface having a texture. 7. Synthesis according to the scope of the patent application The manufacturing method of the skin, Xingzhong 'the step (A) also manufactures the ancient Gan ^. There is a base layer, and the synthetic skin manufacturing method further comprises a step between the step _ (B) and the step (C) ( B), the step (B') is that the spleen is bonded to the film by the spleen, and 14 201209243 can be obtained - a synthetic skin having a grain on the surface. 8. According to the synthetic skin of the scope of claim 7 The method for producing the base layer prepared in the step (A) is selected from the group consisting of a fabric, a foamed, a Q foamed material bonded to a fabric, a natural leather, a synthetic leather, a seed, and a method for producing a skin, comprising The following steps are as follows: (A) preparing a continuous film and a continuous base layer, the film is formed into a layer of the thermoplastic composite material containing the uncompleted crosslinking reaction, and the film is passed through a plurality of hot pressing steps in a stepwise manner. Forming machine, hot pressing in a multi-stage manner in the evening, to complete the crosslinking reaction of the film and human (C) the base layer is combined with the film before one of the hot press forming machines, and hot pressed by the hot press forming machine It can be combined with the thin, ί into the u ° * Bp - synthetic leather. Take 1〇' manufacture of synthetic leather according to item 9 of the patent application scope The base layer prepared in the step (A) is selected from the group consisting of a woven fabric, a foamed material, and a " ‘ packaging material bonded to the woven fabric, and the film is a transparent material.