TW201639708A - Release film for leather product - Google Patents

Abstract

The present invention provides a release film for manufacturing leather pattern or texture, which includes: a base material which is a plastic thin film; an adhesive agent; a film layer adhered to one surface of the base material by using the adhesive agent; a texture surface formed on the outer surface of the film layer with release feature, wherein the texture surface of the film layer is provided with release feature, or the texture surface of the film layer is provided with a release agent layer. By using the release film of the present invention, it is able to manufacture the pattern/texture of leather at a relatively low cost. Specifically, the base material is a polyethylene terephthalate (PET) film, and the film layer is a cast polyethylene (CPP) film or polyethylene (PE) film.

Description

Release film for leather products

The present invention relates to leather articles, and more particularly to an article for making a pattern of leather products.

According to the prior art, a prior art technique for making a pattern on a leather surface is to apply PU (Polyurethane) onto a release paper and then transfer it to a substrate of leather. The surface of the release paper is patterned. The coated PU forms a pattern of the release paper, and after the PU is transferred to the base of the leather, the surface of the leather has a pattern.

The current process uses release paper as a material for making grain on leather. If the leather has different textures, it is necessary to make release paper of different textures. However, the release paper has many inconveniences and has not been solved for a long time. First, China's leather release paper is from abroad, controlled by the United States, Italy, the United Kingdom and South Korea, and has no independent technology; Because the technology and price are controlled by foreign countries, the price of release paper is very high. Third, when the leather industry orders the release paper, it needs to purchase a considerable amount. The supplier will sell the release paper, which will cause the cost and pressure of the goods. Fourth, the release paper is coated with PE (polyethylene) material, so that the release paper material can not be recycled and reused, which is not conducive to environmental protection. Fifth, because the release paper is a papermaking technology, the re-production of the new pattern requires a very expensive opening cost, which can be afforded by the general practitioner. Finally, it takes hundreds of millions of dollars to invest in equipment that produces release paper.

All of the above reasons are not conducive to the use, design and development of the leather industry. The new pattern is controlled by the manufacturer of the release paper, which hinders the technical upgrading of the leather industry. Inventors have solved the long-standing lack of leather pattern technology, and have developed the invention.

The main object of the present invention is to provide a release film for leather products, in place of the release paper purchased abroad, so that the leather pattern industry can be upgraded.

Another object of the present invention is to provide a release film for a leather product which can transform a noble release paper into a more competitive release film to reduce cost.

The release film for the first leather product provided by the present invention comprises: a substrate, which is a plastic film; an adhesive; a release film, which is attached to the adhesive a surface of the substrate; and a textured surface formed on the outer surface of the release film layer.

The release film for a second leather product provided by the present invention comprises: a substrate which is a plastic film; an adhesive; a film layer which is adhered to one surface of the substrate a grain surface formed on an outer surface of the release film layer; and a release agent layer disposed on the grain surface.

The release film for the third leather product provided by the present invention comprises: a substrate, which is a plastic film; an adhesive; a film layer attached to the surface of the substrate by the adhesive; a grain surface formed on the outer surface of the release film; And the component of the film layer is added with a release plastic.

The release film for a fourth leather product provided by the present invention comprises: a substrate, which is a plastic material film; an adhesive; a plastic film layer, the adhesive is attached to the substrate One surface; and a grain surface formed on the outer surface of the release film layer; the grain surface has a release property.

Therefore, the present invention creates a release film to replace the release paper; the production equipment of the release film is relatively inexpensive, can produce finer lines, has low cost for developing new patterns, and consumes less material for trial production, and can be domestically The company is easy and capable of producing release films, promoting technology upgrades and recycling.

Preferably, the substrate is polyethylene terephthalate (PET film; the release film layer is a cast polypropylene (CPP) film or a polyethylene (PE) film.

Preferably, the substrate and the release film layer are at least heat resistant to a temperature of 110 degrees Celsius; preferably, the grain surface is formed with a textured surface.

Preferably, the component used in the release agent layer has silica gel or is a release resin.

Preferably, the film layer used in the second or third release film is oriented polymerization A propylene (OPP) film or a thermoplastic polyurethane (TPU) film or a polyvinyl chloride (PVC) film.

10, 10', 10", 10'" ‧ ‧ release film

12‧‧‧Substrate

14‧‧‧Adhesive

16, 20, 25‧ ‧ film

18, 22‧‧‧ grain surface

24, 24'‧‧‧ release layer

30‧‧‧Grade

32‧‧‧ first surface

34‧‧‧second surface

40‧‧‧ Leather

In order to provide a further understanding of the present invention, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. A perspective view of the release film of the embodiment is represented by a small area of release film.

The second figure is a high-magnification enlarged cross-sectional view of the release film of the first figure.

The third drawing is a cross-sectional view of a semi-finished product of the release film of the first preferred embodiment.

The fourth figure shows that a layer of plastic is applied to one surface of the release film.

The fifth figure shows a cross-sectional view of a piece of leather attached to the layer of plastic material.

The sixth figure shows a cross-sectional view of the finished leather that has been transferred to the leather surface.

Figure 7 is an enlarged cross-sectional view showing a release film of a second preferred embodiment of the present invention.

The eighth figure is a cross-sectional view of the semi-finished product of the release film of the seventh figure.

Figure 9 is an enlarged cross-sectional view showing a release film of a third preferred embodiment of the present invention.

Figure 11 is an enlarged cross-sectional view showing a release film of a fourth preferred embodiment of the present invention.

Referring to the first drawing, a release film 10 for a leather product according to a first preferred embodiment of the present invention is a material for making a texture on the surface of the leather.

Referring to the second figure, the release film 10 has a thickness of 0.2 to 0.45 mm, the release film produced by a preferred embodiment of the present invention has a thickness of 0.25 mm and a thin thickness. The release film 10 has a layered structure and has a substrate 12, an adhesive 14, and a release film layer 16. The substrate is a plastic film, and the substrate 12 of the embodiment is a PET (polyethylene terephthalate) film. The substrate (PET film) has a high temperature resistance and can withstand more than 180 ° C. temperature.

The release film layer 16 is made of a plastic material and has a release effect, such as a CPP film (cast polypropylene film, cast polypropylene, also called unstretched polypropylene film), or PE (polyethylene, Polyethylene) film, which has a release effect without the need to apply a release agent, especially a CPP film. The film layer 16 can withstand temperatures above 110 °C.

The release film layer 16 is adhered to a surface of the substrate 12 by the adhesive 14 in the method of the present embodiment (that is, the film layer is adhered to the substrate on the inner surface), forming a The semi-finished product of the release film 10 shown in the second figure. After the substrate 12 and the film layer 16 are bonded together, the release film layer 16 is embossed, and the outer surface of the film layer 16 is formed with a textured surface 18 having a concave-convex shape, as shown in the second figure. The grain surface 18 is formed by applying pressure to the film layer 16 at a high temperature, and can be made into various lines or patterns according to the design of the manufacturer. Thereby, the release film 10 is completed.

When a pattern is to be formed on the surface of the leather, first, a layer of plastic material, such as PU (Polyurethane), is applied to the grain surface 18 of the film layer 16 of the release film 10, as shown in the fourth figure to form a layer. The textured layer 30, the first surface 32 of the textured layer 30, is textured by the textured surface 18 of the film layer 16.

Next, the leather 40 to be patterned is attached to the second surface 34 of the texture layer 30. As shown in FIG. 5, the leather 40 and the texture layer 30 are processed at a high temperature (for example, 140 to 160 ° C) processing temperature. The second surface 34 is joined. after that, The leather 40 is separated from the release film 10, and the film layer 30 is detached from the film layer 16 as the film layer 16 is released from the film layer 16 and on the first surface 32 of the grain layer 30. The pattern or texture becomes the texture of the leather 40, as shown in the sixth figure. The leather used for the release film of the present invention may be natural leather, or may be made of PU, PVC (Polyvinyl chloride) or TPU (Thermoplastic Polyurethane). leather.

Figure 7 is a cross-sectional view of a release film 10' provided by a second preferred embodiment of the present invention, the same components being given the same reference numerals. Referring to the second drawing, the release film 10' also includes a layered structure formed by laminating a substrate 12, an adhesive 14, and a film layer 20. The substrate 12 is also a PET film in this embodiment and is resistant to high temperatures. The film layer 20 is not necessary to have a plasticizing material having a disproportion type, and may be, for example, an OPP (Oriented polypropylene) film or a TPU film, or a PVC film. The release film further comprises: a release agent layer 24, in this embodiment is coated with a layer of silica gel (Silica gel) on the outer surface of the film layer 20, as shown in the eighth figure, forming the release agent Floor. The components of the release agent used in the release agent layer 24 may all be a resin of silica gel or a component containing silica gel. The film layer 20 and the release agent layer 24 may be bonded by an adhesive (not shown). After the release agent layer (silica gel) 24 is applied, the film layer 20 is pressed at a processing temperature of a high temperature to form a textured surface 22 having a grain on the outer surface. The release agent layer 24 is formed on the grain surface 22, thereby providing the grain surface 22 with a release effect.

When a pattern is to be formed on the surface of the leather, as in the steps of the fourth to sixth steps, a layer of plastic material is applied on the grain surface 22 of the film layer 20 of the release film 10' to make the layer of the plastic material a texture layer, and the layer The first surface of the textured layer forms a texture according to the pattern of the textured surface 22. Next, the leather to be patterned is applied to the second surface of the texture layer to make the leather and the second surface of the texture layer at the processing temperature. Combine. Finally, the leather is separated from the release film 10', and the release layer of the release layer 24 on the surface of the film layer 20 is separated from the film layer 20, and the grain layer is first The pattern or texture of the surface becomes the texture of the leather.

The ninth embodiment is a cross-sectional view of a release film 10" provided by a third preferred embodiment of the present invention, and the same components are denoted by the same reference numerals. Referring to the second figure, the release film 10" is also comprised of A layered structure formed by bonding a substrate 12, an adhesive 14 and a film layer 20. The substrate 12 and the film layer 20 can be the same as the second preferred embodiment described above, and are not described herein.

This embodiment also has a release agent layer 24' coated on the grain surface 22 of the film layer 20. The release agent layer 24' is a release resin, that is, a resin-made separation. The type of agent makes the grain surface 22 of the film layer 20 release. Similarly, when the pattern of the leather is made by the release film 10" of the present embodiment, the steps are as shown in the fourth to sixth figures.

Figure 10 is a cross-sectional view of a release film 10'" provided by a fourth preferred embodiment of the present invention, and the same components are denoted by the same reference numerals. Referring to Figure 2, the release film 10'" is also the same. A layered structure composed of a substrate 12, an adhesive 14, and a film layer 25 is included. Wherein: the film layer 25 may be a material of the film layer of any of the foregoing embodiments, such as rigid PVC, and the composition thereof is added with a release plastic material such as silica gel. The outer surface of the film layer is also pressure molded to form a grain surface 26 at a high temperature. The film layer 25 has a release property by containing the silica gel, and the plastic material layer applied to the grain surface 26 is easily separated from the film layer 25.

The technical key to overcome the advantages of the invention is that: First, the use of plastics to easily soften the characteristics, can be cut into the embossing technology. Second, the plastic is not easy to produce a release product, the invention is a breakthrough in the plastic release technology. Third, the processing temperature of leather is more than one hundred degrees Celsius, the substrate and film selected by the invention The layer system makes the release film have a high temperature resistance effect and can withstand the processing temperature when the leather is patterned.

The invention utilizes the innovation of material and structure to produce a release film, which can replace the traditional release paper, and the effects include:

First, the pattern of the release film can make the texture of the leather more fine and detailed.

2. The release film of the present invention can be produced in a small amount, and it is not necessary to order a large amount of the release paper as in the prior art, and the release paper manufacturer can produce it. Therefore, it can reduce the economic burden of the leather processing industry, such as the cost of goods and goods.

Third, the production equipment of the release film of the invention only needs about NT$2 million, which enables the Chinese enterprises to produce the release film, and the technology is more popular and popular compared with the cost of the production equipment of the release paper. Facilitate the use of SMEs and promote technology upgrades.

Fourth, the cost of making new patterns with release films is extremely low, and the development of changing patterns is fast.

5. The material used for the trial production of release paper is extremely wasteful; the waste of the test film for the release film is quite small and cannot be compared.

6. The leather pattern can be made by replacing the release paper with a release film, which can be protected from the control of foreign manufacturers.

7. The film type film of the invention is a plastic material, which can be recycled and used in accordance with environmental protection.

The attachment is a physical sample of the release film of the present invention, which has been tested by the inventors to achieve the above effects. The structure and principle of the release film of the present invention are not complicated, but are innovative items in the field of leather processing technology, and improve the lack of inconvenience and the inconvenience of the conventional release paper, thereby improving the use rate and promoting industrial upgrading. Practical improvement.

The above examples are merely illustrative of the invention and not to be limiting. The invention The release film provided is the first structure of the same kind of articles, and has a progressive effect, and is applied according to law.

10‧‧‧ release film

12‧‧‧Substrate

14‧‧‧Adhesive

16‧‧‧ film layer

18‧‧‧ textured surface

Claims (10)

A release film for leather products, comprising: a substrate, a film made of plastic material, at least heat-resistant to 110 degrees Celsius; an adhesive; a film layer, a plastic material, which is attached to the adhesive a surface of the substrate; and a grain surface formed on the outer surface of the release film layer; the grain surface has a release property. A release film for leather products, comprising: a substrate, which is a plastic material film; an adhesive; a release film layer, which is made of a plastic material, and the adhesive is applied to the substrate One surface; and a grain surface formed on an outer surface of the release film layer. The release film according to claim 2, wherein the substrate is a polyethylene terephthalate film (PET); the release film is cast polypropylene (CPP, cast) Film) or polyethylene (PE, Polyethylene) film. The release film according to claim 2 or 3, wherein the substrate and the release film layer are at least heat-resistant to a temperature of 110 degrees Celsius; the grain surface is formed with a textured surface. A release film for leather products, comprising: a substrate, which is a plastic material film; an adhesive; a film layer, which is a plastic material, and the adhesive is applied to one surface of the substrate; a grain surface formed on an outer surface of the release film layer; and a release agent layer disposed on the grain surface. The release film according to claim 5, wherein the component used in the release agent layer has a silica gel or a release resin. The release film according to claim 5, wherein the release agent layer and the film layer have an adhesive. The release film according to claim 5, wherein the substrate is a polyethylene terephthalate film (PET); the film is oriented polypropylene (OPP, Oriented polypropylene). Film or thermoplastic polyurethane (TPU) film or polyvinyl chloride (PVC) film. A release film for leather products, comprising: a substrate, which is a plastic material film; an adhesive; a film layer, which is made of a plastic material, and the adhesive is applied to one surface of the substrate; A textured surface is formed on the outer surface of the release film layer; and the composition of the film layer is added with a release plastic. The release film according to claim 9, wherein the substrate is a polyethylene terephthalate (PET) film; and the film layer has a silica gel.