High stability release paper

Abstract

The utility model provides a kind of high-stability release paper, including support base paper, intermediate film layer, adhesive silicone oil layer and self-adhesive label, wherein: intermediate film layer is fixedly attached to the surface of support base paper, and adhesive silicone oil layer is fixedly attached to the surface of intermediate film layer, and the self-adhesive label is fixedly attached and installed on the surface of adhesive silicone oil layer;The utility model is provided with support base paper and intermediate film layer, and the surface is smooth, and the overall strength is high.

Description

Technical Field

[0001] This utility model relates to the field of release paper technology, and in particular to a highly stable release paper. Background Technology

[0002] Release paper is a specially treated packaging material with a silicone release agent coated on its surface, forming a non-adhesive surface with controllable peel force. It is mainly used as a carrier substrate for adhesive materials such as self-adhesive labels and tapes: protecting the adhesive during storage and transportation, and allowing for easy peeling without leaving residue upon use. Its core characteristics include stable release performance, excellent flatness, and temperature and moisture resistance, making it widely used in label printing, electronic die-cutting, medical dressings, and other fields. Depending on the substrate, it can be divided into glassine release paper, kraft release paper, etc., and is a key functional material in the modern packaging industry. However, existing release papers still suffer from poor tensile strength, uneven surface, and low overall strength.

[0003] Therefore, it is essential to invent a release paper with high stability. Utility Model Content

[0004] To address the aforementioned technical problems, this invention provides a highly stable release paper, solving the issues of poor tensile strength, uneven surface, and low overall strength inherent in existing release papers. The highly stable release paper includes a supporting backing paper, an intermediate coating layer, an adhesive silicone layer, and a self-adhesive label. The intermediate coating layer is adhered and fixed to the surface of the supporting backing paper, and the adhesive silicone layer is adhered and fixed to the surface of the intermediate coating layer. The self-adhesive label is adhered and fixed to the surface of the adhesive silicone layer.

[0005] The supporting backing paper includes a thin base layer, a tear-resistant fiber layer, and a thin top layer, with the thin top layer bonded to the surface of the thin base layer and the tear-resistant fiber layer bonded between the thin base layer and the thin top layer.

[0006] The intermediate coating layer includes a coating and an adaptive adhesive layer, with the adaptive adhesive layer bonded to the bottom surface of the coating.

[0007] The anti-tear-break fiber layer inside the supporting base paper is made of polyester monofilament fiber and is woven into a mesh. This anti-tear-break fiber layer is sandwiched between the thin base layer and the thin surface layer, causing the thin base layer and the thin surface layer to bulge slightly outward.

[0008] The adaptive adhesive layer inside the intermediate coating layer is a thin adhesive layer, and the adaptive adhesive layer will melt slightly after being heated, filling the unraised position of the supporting backing paper, so that the coating and the adhesive silicone oil layer remain flat.

[0009] Compared with the prior art, the present invention has the following beneficial effects: The supporting paper of this invention is provided with excellent tensile strength and tear resistance through the anti-tear layer woven from polyester monofilament fibers; the specially designed micro-raised structure can provide thermal compensation space for the adaptive adhesive layer of the intermediate coating layer to maintain the surface flatness, and can also disperse stress to prevent local damage. It can ensure mechanical performance while also having process adaptability and functional customizability.

[0010] The intermediate coating layer of this invention provides a basic waterproof and oil-proof barrier through coating, while achieving dynamic flatness adjustment by utilizing the thermal response characteristics of the adaptive adhesive layer: it softens and flows when heated to 60-80℃, accurately filling the microscopic depressions of the supporting paper and ensuring perfect adhesion with the adhesive silicone oil layer; its unique elastic modulus forms a stress buffer zone between the rigid supporting paper and the flexible adhesive silicone oil layer. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the structure of the supporting base paper of this utility model.

[0013] Figure 3 This is a schematic diagram of the structure of the intermediate coating layer of this utility model.

[0014] In the picture: Supporting backing paper 1, thin base layer 11, tear-resistant fiber layer 12, thin surface layer 13, intermediate coating layer 2, coating 21, self-adhesive layer 22, adhesive silicone oil layer 3, self-adhesive label 4. Detailed Implementation

[0015] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0016] As attached Figure 1 To be continued Figure 3 As shown.

[0017] This utility model provides a highly stable release paper, comprising a supporting base paper 1, an intermediate coating layer 2, an adhesive silicone oil layer 3, and a self-adhesive label 4, wherein: the intermediate coating layer 2 is bonded and fixed to the surface of the supporting base paper 1, and the adhesive silicone oil layer 3 is bonded and fixed to the surface of the intermediate coating layer 2, and the self-adhesive label 4 is bonded and fixed to the surface of the adhesive silicone oil layer 3.

[0018] The supporting backing paper 1 includes a thin base layer 11, a tear-resistant fiber layer 12, and a thin surface layer 13, with the thin surface layer 13 bonded to the surface of the thin base layer 11 and the tear-resistant fiber layer 12 bonded between the thin base layer 11 and the thin surface layer 13.

[0019] The intermediate coating layer 2 includes a coating 21 and an adaptive adhesive layer 22, and the adaptive adhesive layer 22 is bonded to the bottom surface of the coating 21.

[0020] The anti-tear-break fiber layer 12 inside the supporting base paper 1 is made of polyester monofilament fiber, and the anti-tear-break fiber layer 12 is woven into a mesh. The anti-tear-break fiber layer 12 is sandwiched between the thin base layer 11 and the thin surface layer 13, so that the thin base layer 11 and the thin surface layer 13 bulge outward slightly.

[0021] The adaptive adhesive layer 22 inside the intermediate coating layer 2 is a thin adhesive layer, and the adaptive adhesive layer 22 will melt slightly after being heated, filling the unraised position of the supporting backing paper 1, so that the coating 21 and the adhesive silicone oil layer 3 remain flat.

[0022] This highly stable release paper achieves its core function through the precise combination of multiple materials: the tear-resistant filament layer 12 of the supporting backing paper 1 provides tensile strength with a polyester monofilament fiber woven mesh, and its micro-raised structure reserves deformation space for subsequent processes; the intermediate coating layer 2 establishes a waterproof barrier through the coating 21, and utilizes the thermal response characteristics of the adaptive adhesive layer 22 to dynamically fill surface defects of the supporting backing paper 1, achieving submicron-level flatness; finally, the adhesive silicone oil layer 3 controls the peel force, ensuring that the self-adhesive label 4 can be perfectly attached and peeled off.

[0023] The innovative design lies in the active collaborative mechanism of each functional layer: the stress dispersion capability of the anti-tear-breakage layer 12 is combined with the micro-flow characteristics of the adaptive adhesive layer 22, so that the material automatically compensates for mechanical stress and thermal deformation during die-cutting, printing and other processing; through the thickness control of the thin base layer 11 and the thin surface layer 13 and the modulus gradient design of the coating 21, the overall flexibility is maintained and the risk of delamination is avoided.

[0024] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A highly stable release paper, characterized in that: It includes a supporting backing paper (1), an intermediate coating layer (2), an adhesive silicone oil layer (3), and a self-adhesive label (4), wherein: the intermediate coating layer (2) is bonded and fixed to the surface of the supporting backing paper (1), and the adhesive silicone oil layer (3) is bonded and fixed to the surface of the intermediate coating layer (2), and the self-adhesive label (4) is bonded and fixed to the surface of the adhesive silicone oil layer (3).

2. The high-stability release paper as described in claim 1, characterized in that: The supporting backing paper (1) includes a thin base layer (11), a tear-resistant fiber layer (12) and a thin surface layer (13), with the thin surface layer (13) bonded to the surface of the thin base layer (11) and the tear-resistant fiber layer (12) bonded between the thin base layer (11) and the thin surface layer (13).

3. The high-stability release paper as described in claim 1, characterized in that: The intermediate coating layer (2) includes a coating (21) and an adaptive adhesive layer (22), and the adaptive adhesive layer (22) is bonded to the bottom surface of the coating (21).

4. The high-stability release paper as described in claim 2, characterized in that: The anti-tear-break fiber layer (12) inside the supporting base paper (1) is made of polyester monofilament fiber, and the anti-tear-break fiber layer (12) is woven into a net. The anti-tear-break fiber layer (12) is sandwiched between the thin base layer (11) and the thin surface layer (13), so that the thin base layer (11) and the thin surface layer (13) bulge outward slightly.

5. The high-stability release paper as described in claim 3, characterized in that: The adaptive adhesive layer (22) inside the intermediate coating layer (2) is a thin adhesive layer, and the adaptive adhesive layer (22) will melt slightly after being heated, filling the unprotruded position of the supporting backing paper (1), so that the coating (21) and the adhesive silicone oil layer (3) remain flat.

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