Waterproof structure by water-based polyurethane film bonding.

Abstract

This invention provides a waterproof structure formed by aqueous polyurethane film lamination that offers excellent waterproofing effect and structural stability, can be incorporated into related products according to different application requirements, and has good application flexibility. [Solution] The waterproof structure formed by aqueous polyurethane film lamination comprises a base material 10 and an aqueous polyurethane film layer 20. The aqueous polyurethane film layer is a continuous thin film formed from an aqueous polyurethane material and is provided by lamination to at least one surface of the base material, forming a waterproof structure and preventing the penetration of moisture. The base material may be a woven fabric base material, or a strip-shaped woven material, such as a fastener tape. The aqueous polyurethane film layer may be a transparent thin film or a thin film containing a colored masterbatch, and is laminated to the surface of the base material in a continuous, bubble-free thin film state, so that the waterproof structure adheres stably to the base material.

Description

Technical Field

[0001] The present invention relates to a waterproof structure, and particularly to a waterproof structure that forms a film-forming layer using aqueous polyurethane and bonds it to the surface of a substrate. The waterproof structure is applicable to substrates such as fabrics or strip-shaped woven materials, and can be applied to related products that require waterproofing.

Background Art

[0002] Many conventionally known waterproof structures prevent the intrusion of moisture by forming a waterproof layer on the surface of a substrate. The waterproof layer is usually formed using a polyurethane material and is provided on the surface of the substrate by methods such as coating or bonding to achieve the purpose of waterproofing.

[0003] In conventional waterproof structures, the polyurethane material is solvent-based or water-based. With the differences in manufacturing conditions and application requirements, related technologies have gradually developed towards replacing solvent-based polyurethane with water-based polyurethane. However, conventional technologies focus on adjusting material properties or manufacturing conditions, and there is still room for improvement in the film-forming state and bonding structure in which the waterproof layer is formed on the surface of the substrate.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The main object of the present invention is to provide a waterproof structure by aqueous polyurethane film-forming bonding that forms a stable waterproof structure by providing an aqueous polyurethane film-forming layer on the surface of a substrate and bonding the film-forming layer to at least one surface of the substrate in a continuous thin film state.

Means for Solving the Problems

[0005] To achieve the above object, the waterproof structure disclosed by the present invention includes a substrate and an aqueous polyurethane film-forming layer. The aqueous polyurethane film-forming layer is a continuous thin film formed from an aqueous polyurethane material, is provided by bonding to the surface of the substrate, and can prevent the intrusion of moisture and impart a waterproof effect.

[0006] Compared to conventional waterproof structures, the waterproof structure of this invention, which uses aqueous polyurethane film deposition lamination, improves the waterproofing effect by forming a continuous and stable film-like structure on the substrate surface through the lamination design of the aqueous polyurethane film layer. This not only improves the smoothness of the appearance but also contributes to improved reliability in use.

[0007] Furthermore, the waterproof structure of this invention can be applied to different types of base materials, such as woven fabrics or strip-shaped woven materials, depending on actual needs, possessing good application flexibility and meeting the usage requirements of various products that require waterproofing.

[0008] In one embodiment of the present invention, the base material is a woven fabric base material.

[0009] In one embodiment of the present invention, the woven base material is a strip-shaped woven material.

[0010] In one embodiment of the present invention, the strip-shaped woven material is a fastener tape.

[0011] In one embodiment of the present invention, the aqueous polyurethane film layer is provided by laminating it to one surface of the fastener tape.

[0012] In one embodiment of the present invention, the aqueous polyurethane film layer is a transparent thin film.

[0013] In one embodiment of the present invention, the aqueous polyurethane film layer is a thin film containing a colored masterbatch.

[0014] In one embodiment of the present invention, the aqueous polyurethane film layer is a continuous, bubble-free thin film structure. [Effects of the Invention]

[0015] Based on the above, the structural advantages of the waterproof structure formed by aqueous polyurethane film lamination according to the present invention will be briefly explained below.

[0016] 1. The waterproof structure of this invention, which uses aqueous polyurethane film deposition and lamination, effectively prevents moisture penetration by laminating an aqueous polyurethane film layer to the substrate surface in a continuous thin film state, thereby ensuring that the waterproof layer adheres stably to the substrate. The structural design, which involves laminating the deposited thin films, forms a smooth and continuous film-like structure on the substrate surface, contributing to improved overall waterproofing effect and structural stability.

[0017] 2. This invention uses an aqueous polyurethane material to form a film layer, thereby maintaining waterproofing functionality while ensuring consistency in film quality and appearance, and improving the reliability of the product during use. Furthermore, this waterproof structure is applicable to different types of substrates, such as woven fabrics or strip-shaped woven materials, and has good application flexibility, making it applicable to various related products that require waterproofing. [Brief explanation of the drawing]

[0018] [Figure 1] This is a schematic cross-sectional view of the waterproof structure of the present invention, which is formed by aqueous polyurethane film lamination. [Figure 2] This is a three-dimensional schematic diagram of the waterproof structure of the present invention, which is formed by aqueous polyurethane film lamination. [Figure 3] This is a schematic diagram showing the waterproof structure of the present invention applied to a fastener tape. [Modes for carrying out the invention]

[0019] As shown in Figures 1 and 2, the waterproof structure of the present invention, which is formed by aqueous polyurethane film lamination, includes a base material 10 and an aqueous polyurethane film layer 20. The aqueous polyurethane film layer 20 is a continuous thin film formed from an aqueous polyurethane material and is provided by lamination to at least one surface of the base material 10 to form a waterproof structure.

[0020] In the embodiments shown in Figures 1 and 2, the base material 10 is a woven fabric base material and can be formed in the form of a sheet or a strip depending on the actual application requirements. The aqueous polyurethane film layer 20 is laminated to the surface of the base material 10 in a continuous thin film state, so that the waterproof layer adheres stably to the base material 10 and forms a continuous thin film structure on the surface of the base material 10.

[0021] However, the present invention is not limited to the foregoing one-sided bonding embodiment. In other embodiments, the aqueous polyurethane film-forming layer 20 may be bonded and provided on both side surfaces of the substrate 10, which also belongs to the protection scope of the present invention.

[0022] In one embodiment of the present invention, the substrate 10 is a woven substrate, which is formed by weaving fiber materials, has a certain flexibility and structural strength, and is suitable for the subsequent bonding and installation of the waterproof layer. More specifically, the woven substrate may be a strip-shaped woven material, showing a long-shaped structure, and is suitable for products (such as fastener tapes) that require a continuous waterproof effect.

[0023] In another specific embodiment, the strip-shaped woven material is specifically a fastener tape 11, and the aqueous polyurethane film-forming layer 20 is bonded and provided on at least one surface of the fastener tape 11, giving a waterproof effect without affecting the original opening and closing function of the fastener. In other embodiments, the aqueous polyurethane film-forming layer 20 may be bonded and provided on both side surfaces of the fastener tape 11 to form a double-sided waterproof structure, which also belongs to the protection scope of the present invention.

[0024] In the embodiments shown in FIGS. 1 and 2, the aqueous polyurethane film-forming layer 20 is a transparent thin film.

[0025] Referring to FIGS. 1 and 2, in another embodiment, the aqueous polyurethane film-forming layer 20 may be a thin film containing a color masterbatch, which can meet different appearance or application requirements. Also, the aqueous polyurethane film-forming layer 20 is continuous and bonded to the surface of the substrate 10 in a thin film state without bubbles, forming a uniform and dense film-like structure after bonding, reducing the possibility of voids or bubbles generated during the film-forming process. The continuous and bubble-free thin film state of the film-forming layer 20 avoids the formation of moisture intrusion paths by bubbles, improving the overall waterproof effect.

[0026] Furthermore, the aforementioned bubble-free continuous thin film structure maintains a good bonding state between the aqueous polyurethane film layer 20 and the substrate 10, reducing the occurrence of peeling or structural deterioration due to bending, tension, or long-term use during the process of use, thereby improving the structural stability and reliability of the waterproof structure.

[0027] Furthermore, the bonding structure between the aqueous polyurethane film layer 20 and the substrate 10 describes the structural state after completion and does not limit the formation method or manufacturing process. With the aforementioned structural configuration, the waterproof layer exists stably on the surface of the substrate 10 in a film-formed state, providing a waterproof effect.

[0028] Referring further to Figure 3, one specific embodiment of the base material 10 is a fastener tape 11. In this embodiment, the aqueous polyurethane film layer 20 is provided by laminating it to one surface of the fastener tape 11, and while maintaining the original structure and function of the fastener tape 11, it has a waterproof effect and is applicable to fastener structures that require waterproofing.

[0029] In actual use, when the waterproof structure of this invention is applied to the relevant product, the aqueous polyurethane film layer 20 forms a waterproof barrier, preventing moisture from penetrating through the substrate 10, thereby achieving the objective of waterproofing. Since the waterproof structure of this invention is composed of bonded film layers 20, it can be positioned appropriately according to different product requirements and has good application flexibility.

[0030] As described above, the waterproof structure of the present invention, which is formed by bonding an aqueous polyurethane film layer 20 to at least one surface of the substrate 10 in a continuous thin film state, forms a waterproof barrier and effectively prevents the penetration of moisture.

[0031] The bonding configuration of the aqueous polyurethane film layer 20 and the base material 10 results in a waterproof layer exhibiting a continuous and smooth film-like structure, contributing to improved stability and reliability of the waterproof structure. When the base material 10 is a fastener tape 11, the aqueous polyurethane film layer 20 can be bonded to one surface of the fastener tape 11 to provide the necessary waterproof effect for the fastener structure without affecting the original function of the fastener tape 11.

[0032] Furthermore, the waterproof structure of this invention can be applied to different types of substrates 10 according to actual needs, possesses good structural flexibility and applicability, and can be applied to various related products that require waterproofing.

[0033] As is clear from the above structure and configuration, this invention, through the film formation and lamination design of the aqueous polyurethane film layer 20, stably provides a waterproof layer on the surface of the substrate 10 in a continuous and smooth thin film state, avoiding the formation of water penetration paths due to discontinuities or structural defects in the film layer, thereby effectively improving the waterproof effect and enabling the waterproof structure to maintain structural stability even under long-term use conditions.

[0034] Furthermore, since the waterproof structure of this invention forms a film layer 20 using an aqueous polyurethane material, it is possible to maintain good film quality and consistency in appearance while ensuring waterproofing functionality. When the base material 10 is a fastener tape 11, it provides a waterproofing effect without affecting its original opening and closing function, improving the reliability of the overall structure and its application flexibility, and can be applied to various related products that require waterproofing.

[0035] The above description is merely one specific embodiment of the present invention and does not limit the scope of the rights of the present invention. All equivalent changes or modifications made to the structure based on the technical content disclosed in the specification and drawings of the present invention are included within the scope of protection of the present invention. [Explanation of symbols]

[0036] 10 Base material 11 Fastener tape 20. Aqueous polyurethane film-forming layer

Claims

1. The system comprises a substrate and an aqueous polyurethane film layer. The aqueous polyurethane film-forming layer is a continuous thin film formed from an aqueous polyurethane material, and is laminated to at least one surface of the substrate to provide a waterproofing effect, characterized in that it is a waterproof structure formed by aqueous polyurethane film lamination.

2. The waterproof structure according to claim 1, wherein the base material is a woven fabric base material.

3. The waterproof structure according to claim 2, wherein the woven base material is a strip-shaped woven material.

4. The waterproof structure according to claim 3, wherein the strip-shaped woven material is a fastener tape.

5. The waterproof structure according to claim 4, wherein the aqueous polyurethane film layer is bonded to one surface of the fastener tape.

6. The waterproof structure according to claim 1, wherein the aqueous polyurethane film layer is a transparent thin film.

7. The waterproof structure according to claim 1, wherein the aqueous polyurethane film layer is a thin film containing a coloring agent.

8. The waterproof structure according to claim 1, wherein the aqueous polyurethane film layer has a continuous thin film structure without air bubbles.

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