A dry coating decoration aid

Abstract

The utility model relates to the technical field of shoes and clothes auxiliary material, specifically relates to a dry process coating decoration auxiliary material, including hot melt adhesive joint layer, cloth base intermediate pad layer and PU decoration coating, cloth base intermediate pad layer dry process is compounded on PU decoration coating, hot melt adhesive joint layer hot press is compounded on the surface of cloth base intermediate pad layer far from PU decoration coating. The utility model adopts cloth base intermediate pad layer between hot melt adhesive joint layer and PU decoration coating, and the weaving gap of cloth base intermediate pad layer itself can provide penetration channel and enhance the compounding firmness when dry process is compounded, can also provide stable effect when hot press is applied, the pattern of PU decoration coating is almost unchanged after hot press forming, perfect and beautiful, and the solvent in PU decoration coating is effectively volatilized during dry process compounding, and there is no residue, so that the quality defect of yin and yang color of decoration auxiliary material during later storage or application is avoided.

Description

Technical Field

[0001] This utility model relates to the field of footwear and apparel accessories technology, specifically to a dry-coated decorative accessory. Background Technology

[0002] In the footwear and apparel manufacturing industry, decorative accessories are often fixed to the surface of footwear and apparel materials using a hot-pressing process to enhance aesthetics. These accessories are laser-engraved into various shapes of patterns or text, commonly known as lettering films. Current methods for these decorative accessories involve coating a PU colored decorative layer onto release paper, drying it into a film, and then bonding it with a TPU hot-melt film adhesive layer. However, this method has drawbacks: when the surface of the footwear or apparel material is relatively rough, unevenness, localized collapse, and deformation of the surface pattern can easily occur after hot pressing. Another approach is to replace the TPU hot-melt film with a high-low temperature film layer. The high-temperature TPU film layer is laminated to the decorative coating. However, because the high-temperature TPU film layer is denser and the drying temperature should not be too high, solvent residue within the coating may not evaporate easily during lamination, potentially causing color variations in the accessory. Utility Model Content

[0003] The purpose of this invention is to provide a dry coating decorative auxiliary material that can prevent local collapse and deformation of decorative patterns and avoid uneven coloring.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A dry-coated decorative auxiliary material includes a hot melt adhesive layer, a fabric-based intermediate layer, and a PU decorative coating. The fabric-based intermediate layer is dry-coated onto the PU decorative coating, and the hot melt adhesive layer is hot-pressed onto the surface of the fabric-based intermediate layer away from the PU decorative coating.

[0005] Preferably, the hot melt adhesive layer is a low-melting-point TPU hot melt adhesive film.

[0006] Preferably, the intermediate padding layer of the fabric base is a woven fabric.

[0007] Preferably, the PU decorative coating includes a PU adhesive coating and a PU topcoat, wherein the PU adhesive coating is dry-laminated with a fabric-based intermediate layer, and the PU topcoat is located on the side of the PU adhesive coating away from the fabric-based intermediate layer.

[0008] Preferably, the PU decorative coating further includes a PU intermediate coating, which is located between the PU topcoat and the PU adhesive coating.

[0009] Preferably, the decorative accessory further includes an adhesive positioning film, which is adhered to the PU surface coating.

[0010] Compared with the prior art, the present invention has the following beneficial effects: This utility model of decorative auxiliary material uses a cloth-based intermediate pad between the hot melt adhesive layer and the PU decorative coating. The weave gaps of the cloth-based intermediate pad can provide penetration channels during dry lamination to enhance the lamination strength. It can also provide a stabilizing effect during hot pressing. After hot pressing, the pattern of the PU decorative coating remains almost unchanged, intact and beautiful. At the same time, it is conducive to the effective evaporation of solvent inside the PU decorative coating during dry lamination, so as to avoid the appearance of uneven color quality defects in the decorative auxiliary material after later storage or application. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the dry coating decorative auxiliary material of this utility model.

[0012] The markings in the diagram are: 10, hot melt adhesive layer; 20, cloth-based intermediate padding layer; 31, PU adhesive coating layer; 32, PU intermediate coating layer; 33, PU top coating layer; 40, self-adhesive positioning film. Detailed Implementation

[0013] To make the above-mentioned features and advantages of this utility model more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings for detailed explanation.

[0014] like Figure 1 As shown, this embodiment provides a dry-coated decorative auxiliary material, including a self-adhesive positioning film 40, a hot melt adhesive layer 10, a cloth base intermediate layer 20, and a PU decorative coating. The cloth base intermediate layer 20 is dry-coated onto the PU decorative coating, and the hot melt adhesive layer 10 is hot-pressed onto the surface of the cloth base intermediate layer 20 away from the PU decorative coating.

[0015] In this embodiment, the hot melt adhesive layer 10 is a low-melting-point TPU hot melt adhesive film. The melting point range of the low-melting-point TPU hot melt adhesive film is 70℃-100℃. In application, the decorative accessory can be bonded to the product carrier through a hot pressing process. The product carrier can be clothing fabric.

[0016] In this embodiment, the intermediate padding layer 20 of the fabric base is a woven fabric. The woven fabric is required to be flat and thin, and can be made of 20D / 24F polyester filaments woven in a plain weave with warp and weft yarns, with a warp density of 25-35 threads / cm and a weft density of 20-25 threads / cm. Because the woven fabric contains gaps, the solvent inside the PU decorative coating can effectively evaporate and leave no residue during manufacturing, ensuring the color stability of the PU decorative coating and avoiding uneven coloring.

[0017] In this embodiment, the PU decorative coating includes a PU adhesive coating 31, a PU intermediate coating 32, and a PU topcoat 33. The PU adhesive coating 31 is dry-laminated with the fabric intermediate pad 20. The PU topcoat 33 is located on the side of the PU adhesive coating 31 away from the fabric intermediate pad 20. The PU intermediate coating 32 is located between the PU topcoat 33 and the PU adhesive coating 31. The self-adhesive positioning film 40 is adhered to the PU topcoat 33. The PU decorative coating and the fabric intermediate pad 20 are well bonded together by the PU adhesive coating 31. The gaps inside the fabric intermediate pad 20 also provide a penetration channel for the PU adhesive coating 31 and the hot melt adhesive layer 10 during lamination, which helps to enhance the lamination strength. The PU intermediate coating 32 can be selected in color as needed, and can play a good transition role and weather resistance role. The PU topcoat 33 can be selected in color as needed, mainly playing a decorative and weather-resistant role. It can be combined with the PU intermediate coating 32 to form two layers of color, making the surface more three-dimensional.

[0018] The decorative auxiliary material in this embodiment adopts a release paper dry coating process, specifically: first, a polyurethane topcoat is applied to a plain-weave release paper, pre-baked to semi-dry, then a polyurethane intermediate coating is applied to the surface of the polyurethane topcoat, baked to semi-dry, then a polyurethane adhesive coating is applied, and then baked to semi-dry; next, a fabric base intermediate pad 20 is bonded to the surface of the polyurethane adhesive coating and dried; a hot-pressing composite process is used to bond a hot melt adhesive layer 10 to the surface of the fabric base intermediate pad 20; the release paper is peeled off, and then a self-adhesive positioning film 40 is laminated onto the PU topcoat 33 to obtain the finished product. The thickness of the PU adhesive layer 31 is 10μm-30μm, the thickness of the PU intermediate coating 32 is 20μm-30μm, the thickness of the PU topcoat 33 is 20μm-40μm, and the thickness of the hot melt adhesive layer 10 is 80μm-150μm. When using it, the shape and size are laser-engraved according to the required shape and size, and then hot-pressed onto the required part. Then the self-adhesive positioning film 40 is separated. The base film of the self-adhesive positioning film 40 is made of PET material.

[0019] The foregoing has shown and described the basic principles, main features, and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications may be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. A dry-coating decorative auxiliary material, characterized in that: It includes a hot melt adhesive layer, a cloth base interlayer, and a PU decorative coating. The cloth base interlayer is dry-laminated onto the PU decorative coating, and the hot melt adhesive layer is hot-pressed onto the surface of the cloth base interlayer away from the PU decorative coating.

2. The dry coating decorative auxiliary material according to claim 1, characterized in that: The hot melt adhesive layer is a low-melting-point TPU hot melt adhesive film.

3. The dry coating decorative auxiliary material according to claim 1, characterized in that: The intermediate padding layer of the fabric base is a woven fabric.

4. The dry coating decorative auxiliary material according to claim 1, characterized in that: The PU decorative coating includes a PU adhesive coating and a PU topcoat. The PU adhesive coating is dry-laminated with a fabric-based intermediate layer, and the PU topcoat is located on the side of the PU adhesive coating away from the fabric-based intermediate layer.

5. The dry coating decorative auxiliary material according to claim 4, characterized in that: The PU decorative coating also includes a PU intermediate coating, which is located between the PU topcoat and the PU adhesive coating.

6. The dry coating decorative auxiliary material according to claim 4, characterized in that: The decorative accessories also include an adhesive positioning film, which is adhered to the PU surface coating.

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