Low-pressure mark waterproof adhesive tape suitable for light, thin and high-elasticity fabric

Abstract

The utility model discloses a low pressure mark waterproof adhesive tape suitable for light and thin high elastic fabric, including fabric layer, the both sides of fabric layer are provided with first barrier membrane layer and second barrier membrane layer respectively, the first barrier membrane layer is provided with first surface treatment layer on the side away from fabric layer, the second barrier membrane layer is provided with second surface treatment layer on the side away from fabric layer, the second surface treatment layer is provided with hot melt adhesive layer on the side away from second barrier membrane layer, the utility model discloses, through the gradient hardness design of surface treatment layer, barrier membrane, flexible fabric, the hardness difference of adhesive tape and base material fabric falls, and the pressure mark residual rate reduces, waterproof and elastic double -reinforced double -sided E the barrier membrane of PTFE forms double waterproof barrier, the spandex component of middle fabric layer coordinates each layer deformation, and the overall tensile resilience of adhesive tape improves, avoids the cracking or wrinkling of adhesive tape when pulling.

Description

Technical Field

[0001] This utility model relates to the technical field of waterproof adhesive strips for fabrics, specifically a low-indentation waterproof adhesive strip suitable for lightweight, high-elastic fabrics. Background Technology

[0002] A current publication (CN201471811U) discloses a waterproof adhesive strip specifically for raincoats or diving suits, primarily used for waterproofing the seams of raincoats or diving suits. The waterproof adhesive strip is composed of three tightly bonded layers: a PVC surface layer, a PU intermediate layer, and a PU bottom layer. The PVC surface layer is corona-treated, the PU intermediate layer is made of polyether polyol-type PU, and the PU bottom layer is made of polyester polyol-type PU. This waterproof adhesive for raincoats or diving suits can withstand high working temperatures without melting the raincoat or diving suit fabric. It also features fast melting speed, good fluidity, good adhesion, and high production efficiency.

[0003] Traditional single-layer barrier film strips are prone to leaving permanent indentations after application because the rigid film layer is in direct contact with the fabric. To address this, we propose a low-indentation waterproof strip that is suitable for lightweight, highly elastic fabrics. Utility Model Content

[0004] The purpose of this invention is to provide a low-indentation waterproof adhesive strip that is compatible with lightweight, high-elastic fabrics, in order to solve the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-indentation waterproof adhesive strip adapted to lightweight, high-elastic fabrics, comprising a fabric layer, a first barrier film layer and a second barrier film layer respectively disposed on both sides of the fabric layer, a first surface treatment layer disposed on the side of the first barrier film layer away from the fabric layer, a second surface treatment layer disposed on the side of the second barrier film layer away from the fabric layer, and a hot melt adhesive layer disposed on the side of the second surface treatment layer away from the second barrier film layer.

[0006] Preferably, the fabric layer is made of nylon 66 or spandex blended fabric.

[0007] Preferably, both the first barrier film layer and the second barrier film layer are made of E-PTFE barrier film.

[0008] Preferably, both the first surface treatment layer and the second surface treatment layer are resin layers.

[0009] Preferably, the hot melt adhesive layer is made of PU hot melt adhesive.

[0010] Compared with the prior art, the beneficial effects of this utility model are: By designing a gradient hardness through a surface treatment layer, a barrier film, and a flexible fabric, the hardness difference between the adhesive strip and the substrate fabric is reduced, thus lowering the indentation residue rate.

[0011] The dual reinforcement of waterproofing and elasticity is achieved by the double-sided E-PTFE barrier membrane, which forms a double waterproof barrier. The spandex component of the middle fabric layer coordinates the deformation of each layer, and the overall tensile resilience of the adhesive strip is improved, preventing the adhesive strip from cracking or wrinkling when pulled. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] In the figure: 1. Fabric layer; 2. First barrier film layer; 3. First surface treatment layer; 4. Second barrier film layer; 5. Second surface treatment layer; 6. Hot melt adhesive layer. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0015] Please see Figure 1In this embodiment of the present invention, a low-indentation waterproof adhesive strip adapted to lightweight, high-elastic fabrics includes a fabric layer 1, wherein the fabric layer 1 is made of nylon 66 or spandex blended fabric, and a first barrier film layer 2 and a second barrier film layer 4 are respectively provided on both sides of the fabric layer 1, wherein both the first barrier film layer 2 and the second barrier film layer 4 are made of E-PTFE. The barrier film, with a first barrier film layer 2 and a second barrier film layer 4, has a thickness of 0.02~0.04mm. This slightly thinner design reduces overall rigidity and creates a symmetrical structure with the first layer, ensuring even stress distribution on the fabric after bonding and reducing the risk of unilateral indentation. Water-based resin is used to reduce shrinkage and prevent localized hard spots caused by material shrinkage after bonding. A first surface treatment layer 3 is provided on the side of the first barrier film layer 2 away from the fabric layer 1, and a second surface treatment layer 5 is provided on the side of the second barrier film layer 4 away from the fabric layer 1. Both the first and second surface treatment layers 3 and 5 are resin layers with a thickness of 0.01~0.02mm. This thin coating design does not affect overall elasticity and reduces the overall thickness, thus lessening the constraint on fabric elasticity. A hot melt adhesive layer 6 is provided on the side of the second surface treatment layer 5 away from the second barrier film layer 4. The hot melt adhesive layer 6 uses PU hot melt adhesive, specifically a low softening point PU. The adhesive can be bonded at a temperature of 120-140℃, reducing the damage to the fibers of thin fabrics caused by high temperatures; the thickness is controlled within 0.05mm to reduce the rigidity of the adhesive layer after curing.

[0016] The working principle of this utility model is as follows: through the gradient hardness design of the surface treatment layer, barrier film, and flexible fabric, the hardness difference between the adhesive strip and the substrate fabric is reduced, and the indentation residue rate is reduced; the double-sided E-PTFE barrier film with dual reinforcement of waterproofness and elasticity forms a double waterproof barrier; the spandex component of the middle fabric layer coordinates the deformation of each layer, and the overall tensile resilience of the adhesive strip is improved, avoiding cracking or wrinkling of the adhesive strip when pulled.

[0017] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A low-indentation waterproof adhesive strip suitable for lightweight, high-elastic fabrics, comprising a fabric layer (1), characterized in that: The fabric layer (1) is provided with a first barrier film layer (2) and a second barrier film layer (4) on both sides respectively. The first barrier film layer (2) is provided with a first surface treatment layer (3) on the side away from the fabric layer (1). The second barrier film layer (4) is provided with a second surface treatment layer (5) on the side away from the fabric layer (1). The second surface treatment layer (5) is provided with a hot melt adhesive layer (6) on the side away from the second barrier film layer (4).

2. The low-indentation waterproof adhesive strip adapted to lightweight, high-elastic fabrics according to claim 1, characterized in that: The fabric layer (1) is made of nylon 66 or spandex blended fabric.

3. The low-indentation waterproof adhesive strip adapted to lightweight, high-elastic fabrics according to claim 1, characterized in that: Both the first barrier film layer (2) and the second barrier film layer (4) are made of E-PTFE barrier film.

4. The low-indentation waterproof adhesive strip adapted to lightweight, high-elastic fabrics according to claim 1, characterized in that: Both the first surface treatment layer (3) and the second surface treatment layer (5) are resin layers.

5. The low-indentation waterproof adhesive strip adapted to lightweight, high-elastic fabrics according to claim 1, characterized in that: The hot melt adhesive layer (6) is made of PU hot melt adhesive.

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