Water-resistant hot melt adhesive film

Abstract

The utility model discloses a kind of water-washing resistant hot melt adhesive films, including winding hot melt adhesive film on the surface of winding roller, the hot melt adhesive film is composed of hydrophobic layer, reinforcing layer, hot melt adhesive layer and release layer, the upper surface of the hot melt adhesive layer is bonded with the reinforcing layer, the upper surface of the reinforcing layer is bonded with the hydrophobic layer, the lower surface of the hot melt adhesive layer is bonded with the release layer, the two sides of the hot melt adhesive film are adjacent to be provided with several identical tooth-shaped grooves along winding direction, and the side of the hot melt adhesive film corresponds the several tooth-shaped grooves is marked with scale. The utility model has excellent water-washing resistance, easy separation and adhesion, and the required length can be easily obtained through the design of scale, avoiding the problem caused by eye judgment error, while after a roll of hot melt adhesive film is used up, new hot melt adhesive film can be replaced for continuous use, without replacing winding roller, with lower use cost.

Description

Technical Field

[0001] This utility model relates to the field of hot melt adhesive film technology, specifically to a water-resistant hot melt adhesive film. Background Technology

[0002] Hot melt adhesive film is a type of film product widely used for bonding various fabrics, paper, polymer materials and metals, and can be easily used for continuous or intermittent operations.

[0003] Currently, when hot melt adhesive films are used for bonding various textile fabrics such as footwear, clothing, and bags, long-term washing can easily cause the fabrics to lose adhesion and detach in certain areas, greatly affecting product quality. In addition, the difficulty in separating hot melt adhesive films during use seriously affects efficiency and the human eye's judgment error regarding the required length. If it is too short, it will affect product quality; if it is too long, it will waste materials. Utility Model Content

[0004] The purpose of this invention is to solve the problems of water washing of existing hot melt adhesive films and the difficulty in determining the required length of use, and to provide a water-resistant hot melt adhesive film.

[0005] The technical solution of this utility model is as follows: A water-resistant hot melt adhesive film includes a hot melt adhesive film wound on the surface of a take-up roller. The hot melt adhesive film is composed of a hydrophobic layer, a reinforcing layer, a hot melt adhesive layer, and a release layer. The reinforcing layer is bonded to the upper surface of the hot melt adhesive layer, the hydrophobic layer is bonded to the upper surface of the reinforcing layer, and the release layer is bonded to the lower surface of the hot melt adhesive film. Several identical toothed grooves are provided adjacent to each other on both sides of the hot melt adhesive film along the winding direction, and a scale is marked on one side of the hot melt adhesive film corresponding to the several toothed grooves.

[0006] Furthermore, the hydrophobic layer is made of TPU hydrophobic membrane.

[0007] Furthermore, the reinforcing layer is a polyurethane layer.

[0008] Furthermore, the hot melt adhesive layer is a vinyl acetate copolymer layer.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) The hot melt adhesive film of this utility model is composed of a hydrophobic layer, a reinforcing layer, a hot melt adhesive layer and a release layer; wherein, the hydrophobic layer adopts a TPU hydrophobic film, which has special hydrophobic properties and can significantly improve the water resistance of the hot melt adhesive film. In a humid environment, the TPU hydrophobic film can effectively prevent water penetration, thereby ensuring the bonding strength and stability of the hot melt adhesive film. In addition, the TPU hydrophobic film also has good chemical resistance and can resist the corrosion of most chemical substances, such as acids, alkalis, alcohols, ketones, etc., further enhancing the performance of the hot melt adhesive film in various environments; the reinforcing layer is a polyurethane layer, which can enhance the adhesion and shear strength of the hot melt adhesive and improve the performance of the hot melt adhesive, such as increasing the elasticity of the hot melt adhesive and reducing the brittleness of the hot melt adhesive; the hot melt adhesive layer is a vinyl acetate copolymer layer, which has good adhesive properties and can firmly bond the two materials.

[0010] (2) The present invention has several identical toothed grooves on both sides of the hot melt adhesive film along the winding direction, and a scale is marked on one side of the hot melt adhesive film corresponding to several toothed grooves. The design of the toothed grooves, combined with the material composition of the hot melt adhesive film, makes the hot melt adhesive film very easy to separate, which facilitates the tearing and use of the hot melt cornea. At the same time, the scale design makes it very easy to obtain the required length, avoiding the problem caused by human eye judgment error. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 A schematic diagram of the structure of a water-washable hot melt adhesive film provided by this utility model; Figure 2 This is a schematic diagram of the structure of the hot melt adhesive film described in this utility model; Figure 3 This is a schematic diagram of the structure of the winding roller described in this utility model. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0014] To illustrate the technical solution described in this utility model, specific embodiments are described below.

[0015] Example Please see Figure 1 This embodiment provides a water-resistant hot melt adhesive film, including a hot melt adhesive film 2 wound on the surface of a take-up roller 1, combined with... Figure 2 As shown, the hot melt adhesive film 2 is composed of a hydrophobic layer 21, a reinforcing layer 22, a hot melt adhesive layer 23, and a release layer 24. The reinforcing layer 22 is bonded to the upper surface of the hot melt adhesive layer 23, the hydrophobic layer 21 is bonded to the upper surface of the reinforcing layer 22, and the release layer 24 is bonded to the lower surface of the hot melt adhesive layer 23. Several identical toothed grooves 25 are provided adjacent to each other on both sides of the hot melt adhesive film 2 along the winding direction, and a scale 26 is marked on one side of the hot melt adhesive film 2 corresponding to several toothed grooves.

[0016] The hydrophobic layer 21 is made of TPU hydrophobic film. TPU hydrophobic film has special hydrophobic properties, which can significantly improve the water resistance of hot melt adhesive film. In humid environments, TPU hydrophobic film can effectively prevent moisture penetration, thereby ensuring the bonding strength and stability of hot melt adhesive film. In addition, TPU hydrophobic film also has good chemical resistance and can resist the corrosion of most chemical substances, such as acids, alkalis, alcohols, ketones, etc., further enhancing the performance of hot melt adhesive film in various environments.

[0017] The reinforcing layer 22 is a polyurethane layer. Polyurethane can enhance the adhesion and shear strength of hot melt adhesive, and improve the performance of hot melt adhesive, such as increasing its elasticity and reducing its brittleness. Combined with the toothed groove design, the hot melt adhesive film is very easy to separate, facilitating the tearing and use of the hot melt cornea. At the same time, the scale design makes it very easy to obtain the required length, avoiding problems caused by human eye judgment errors. The hot melt adhesive layer 23 is a vinyl acetate copolymer layer, which has good adhesive properties and can firmly bond the two materials.

[0018] The take-up roller 1 has a first limiting ring 13 and a second limiting ring 14 protruding from both ends, which can effectively limit and fix the wound hot melt adhesive film. Figure 3 As shown, the take-up roller 1 is composed of an outer cylinder 11 and an inner cylinder 12. The outer cylinder 11 has an installation cavity that matches the inner cylinder 12. One end of the outer cylinder 11 has an insertion interface that communicates with the installation cavity. The other end of the outer cylinder 11 has a first limiting ring 13 protruding. The inner cylinder 12 is inserted into the installation cavity through the insertion interface and fixed and detachable. The outer end of the inner cylinder 12 has a second limiting ring 14 protruding. This design of the separable inner and outer cylinders allows the roller to be used again after a roll of hot melt adhesive film is used up, without the need to replace the take-up roller, thus reducing the cost of use.

[0019] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A water-resistant hot melt adhesive film, comprising a hot melt adhesive film wound on the surface of a take-up roller, characterized in that: The hot melt adhesive film is composed of a hydrophobic layer, a reinforcing layer, a hot melt adhesive layer, and a release layer. The reinforcing layer is bonded to the upper surface of the hot melt adhesive layer, the hydrophobic layer is bonded to the upper surface of the reinforcing layer, and the release layer is bonded to the lower surface of the hot melt adhesive layer. Several identical toothed grooves are provided adjacent to each other on both sides of the hot melt adhesive film along the winding direction, and a scale is marked on one side of the hot melt adhesive film corresponding to the several toothed grooves.

2. The water-resistant hot melt adhesive film according to claim 1, characterized in that: The hydrophobic layer is made of TPU hydrophobic membrane.

3. The water-resistant hot melt adhesive film according to claim 1, characterized in that: The reinforcing layer is a polyurethane layer.

4. The water-resistant hot melt adhesive film according to claim 1, characterized in that: The hot melt adhesive layer is a vinyl acetate copolymer layer.

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