UV curing release paper with good flexibility

Abstract

The utility model discloses UV (ultraviolet) curing release paper with good flexibility, which relates to the technical field of release paper and comprises a base material layer, a release layer and a UV curing layer, the release layer is coated on the bottom surface of the base material layer, the UV curing layer is coated on the bottom surface of the release layer, the base material layer comprises fiber backing paper, a bottom coating and a back coating, and the back coating is coated on the bottom surface of the release layer. The bottom surface of the fiber backing paper is coated with the bottom coating, the bottom coating is fixedly connected with the top surface of the release layer, the aramid fibers are arranged in the fiber backing paper, so that the high-strength and high-flexibility release paper has extremely high strength and flexibility, the overall flexibility of the release paper can be remarkably improved, the release paper is not prone to breakage during stretching and bending, and the service life of the high-strength and high-flexibility release paper is prolonged. By arranging the priming coat between the fiber backing paper and the release layer, the adhesive force between the base material layer and the release layer is enhanced, and the overall performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of release paper technology, and in particular to a UV-curable release paper with good flexibility. Background Technology

[0002] In modern industrial production, release paper, as an important functional material, is widely used in many fields such as tapes, labels, and composite materials. Release paper can provide effective isolation between the adhered object and the carrier, ensuring that the adhered object can be easily peeled off from the carrier when needed, without affecting its adhesion and performance. With the continuous advancement of technology, UV-curable release paper has gradually become one of the mainstream products in the market. Compared with traditional solvent-based release paper, UV-curable release paper has significant advantages such as fast curing speed, high production efficiency, and good environmental performance.

[0003] Currently, existing UV-curable release paper still has certain limitations in terms of flexibility. In some application scenarios with high flexibility requirements, such as the packaging industry where release paper needs to be folded and bent multiple times, and when tapes and labels are applied to the surface of complex-shaped objects, ordinary UV-curable release paper is prone to cracking and embrittlement, which makes the release paper unusable and affects product quality and production efficiency. Utility Model Content

[0004] The purpose of this invention is to address the problems of cracking and embrittlement that exist in existing technologies in some application scenarios that require high flexibility, such as the packaging industry where release paper needs to be folded and bent multiple times, and the application of tape and labels on the surface of complex-shaped objects. Therefore, a UV-curable release paper with good flexibility is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a flexible UV-curable release paper, comprising a substrate layer, a release layer and a UV curing layer, wherein the release layer is coated on the bottom surface of the substrate layer, the UV curing layer is coated on the bottom surface of the release layer, the substrate layer comprises a fiber backing paper, a base coating layer and a back coating layer, the base coating layer is coated on the bottom surface of the fiber backing paper, and the base coating layer is fixedly connected to the top surface of the release layer.

[0006] Preferably, the back coating is fixedly connected to the top surface of the fiber backing paper to improve the surface properties of the fiber backing paper.

[0007] Preferably, the back coating includes an anti-fouling coating, a waterproof coating, and an antistatic coating. The antistatic coating is applied to the top surface of the fiber backing paper. The antistatic coating effectively prevents the accumulation of static electricity on the surface of this invention, avoiding dust adsorption or material adhesion.

[0008] Preferably, the waterproof coating is fixedly connected to the top surface of the antistatic coating, and the antifouling coating is fixedly connected to the top surface of the waterproof coating. The waterproof coating improves the waterproof performance of this invention and prevents it from deforming or degrading due to moisture. The antifouling coating makes the surface of this invention less prone to stains or ink, keeping it clean.

[0009] Preferably, the thickness of the release layer is 1-3 μm.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] 1. In this utility model, the aramid fibers in the fiber base paper give it extremely high strength and flexibility, which can significantly improve the overall flexibility of the release paper and make it less prone to breakage when stretched or bent. By setting a base coating between the fiber base paper and the release layer, the adhesion between the substrate layer and the release layer is enhanced, thereby improving the overall performance.

[0012] 2. In this utility model, the surface performance of the fiber backing paper is improved by setting the back coating, the anti-fouling coating makes the surface of this utility model less prone to stains or ink, keeping it clean, and the waterproof coating improves the waterproof performance of this utility model, preventing it from being deformed or its performance from deteriorating due to moisture. Attached Figure Description

[0013] Figure 1 This utility model presents a structural schematic diagram of a UV-curable release paper with good flexibility;

[0014] Figure 2 This utility model provides a structural schematic diagram of a UV-curable release paper substrate layer with good flexibility;

[0015] Figure 3 This invention presents a structural schematic diagram of a flexible UV-curable release paper backing coating.

[0016] Legend: 1. Substrate layer; 11. Fiber backing paper; 12. Primer coating; 13. Back coating; 131. Anti-fouling coating; 132. Waterproof coating; 133. Antistatic coating; 2. Release layer; 3. UV curing layer. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0019] Example 1: As Figure 1 - Figure 3 As shown, this utility model provides a flexible UV-curable release paper, including a substrate layer 1, a release layer 2, and a UV-curable layer 3. The release layer 2 is coated on the bottom surface of the substrate layer 1, and the UV-curable layer 3 is coated on the bottom surface of the release layer 2. The thickness of the release layer 2 is 1-3 μm. The substrate layer 1 includes a fiber base paper 11, a base coating 12, and a back coating 13. The fiber base paper 11 is a paper made of aramid fiber and wood pulp. The base coating 12 is coated on the bottom surface of the fiber base paper 11 and is fixedly connected to the top surface of the release layer 2. The base coating 12 is made of acrylic resin.

[0020] The specific settings and functions of this embodiment will be described in detail below. By setting aramid fibers in the fiber base paper 11, this utility model has extremely high strength and flexibility, which can significantly improve the overall flexibility of the release paper, making it less prone to breakage when stretched or bent. By setting the bottom coating layer 12 between the fiber base paper 11 and the release layer 2, the adhesion between the substrate layer 1 and the release layer 2 is enhanced, improving the overall performance. By setting the back coating layer 13, a cross-linking reaction occurs under ultraviolet light irradiation, forming a solid surface.

[0021] Example 2: Figure 1 - Figure 3 As shown, the back coating 13 is fixedly connected to the top surface of the fiber backing paper 11. The back coating 13 includes an anti-fouling coating 131, a waterproof coating 132, and an antistatic coating 133. The antistatic coating 133 is applied to the top surface of the fiber backing paper 11, the waterproof coating 132 is fixedly connected to the top surface of the antistatic coating 133, and the anti-fouling coating 131 is fixedly connected to the top surface of the waterproof coating 132.

[0022] The overall effect of this embodiment is that the back coating 13 improves the surface performance of the fiber backing paper 11, the anti-fouling coating 131 makes the surface of the present invention less prone to stains or ink, keeping it clean, the waterproof coating 132 improves the waterproof performance of the present invention, preventing it from being deformed or degraded by moisture, and the antistatic coating 133 effectively prevents the accumulation of static electricity on the surface of the present invention, avoiding dust adsorption or material adhesion.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A UV-curable release paper having flexibility, characterized by: It comprises a base material layer (1), a release layer (2) and a UV curing layer (3), the release layer (2) is coated on the bottom surface of the base material layer (1), the UV curing layer (3) is coated on the bottom surface of the release layer (2), the base material layer (1) comprises a fiber base paper (11), a primer layer (12) and a back coating layer (13), the primer layer (12) is coated on the bottom surface of the fiber base paper (11), and the primer layer (12) is fixedly connected with the top surface of the release layer (2).

2. The UV curable release paper according to claim 1, wherein: The back coating layer (13) is fixedly connected with the top surface of the fiber base paper (11).

3. The UV curable release paper according to claim 2, wherein: The back coating layer (13) comprises an antifouling coating layer (131), a waterproof coating layer (132) and an antistatic coating layer (133), and the antistatic coating layer (133) is coated on the top surface of the fiber base paper (11).

4. The UV curable release paper according to claim 3, wherein: The waterproof coating layer (132) is fixedly connected with the top surface of the antistatic coating layer (133), and the antifouling coating layer (131) is fixedly connected with the top surface of the waterproof coating layer (132).

5. The UV curable release paper according to claim 1, wherein: The thickness of the release layer (2) is 1-3 microns.

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