High-viscosity foam gum structure capable of being repeatedly pasted

Abstract

The utility model discloses a high viscosity repeatable pasting foam back glue structure, relates to the foam back glue field, including foam back glue body, the middle part of foam back glue body bottom end is fixedly connected with glue bonding layer, the outer wall of glue bonding layer close to the bottom end is fixedly sleeved with EVA buffer foam layer base material, and the EVA buffer foam layer base material is fixedly connected with the foam back glue body bottom end. The bottom end of the EVA buffer foam layer base material is fixedly connected with a polyurethane waterproof layer, the bottom end of the polyurethane waterproof layer is connected with waterborne polyurethane glue in an adhesive mode, the foam gum body and the EVA buffer foam layer base material are further limited and fixed, and meanwhile under the mutual cooperation of the waterborne polyurethane glue and the polyurethane waterproof layer, the foam gum body and the EVA buffer foam layer base material can be fixed. The water-based polyurethane adhesive and the polyurethane waterproof layer are repeatedly pasted for use, the tensile belts are arranged in the foam gum body, the glue bonding layer, the EVA buffer foam layer base material, the water-based polyurethane adhesive and the polyurethane waterproof layer, and the tensile belts are longitudinally distributed, so that a good tensile function is achieved when the foam gum is used.

Description

Technical Field

[0001] The utility model relates to the field of foam adhesive, in particular to a highly viscous and repeatedly stickable foam adhesive structure. Background Art

[0002] Foam double-sided tape is made by coating both sides of a foam base with a strong acrylic adhesive, then covering one side with a release paper or film. If both sides are covered with release paper or film, it's called a sandwich double-sided tape. Sandwich double-sided tape is primarily designed to facilitate double-sided tape punching. Foam double-sided tape offers strong adhesion, excellent retention, excellent water resistance, high temperature resistance, and strong UV protection. Foam base materials include EVA foam, PE foam, PU foam, acrylic foam, and high-foam. Adhesive systems include oil adhesive, hot melt adhesive, rubber adhesive, and acrylic adhesive.

[0003] The shortcomings of the existing technology: The existing adhesive backing structure can usually only be used for a single pasting. After pasting, it is difficult to remove and reuse it, resulting in a high cost of using the foam adhesive backing and a waste of resources. Therefore, it is necessary to provide a high-viscosity and reusable foam adhesive backing structure to solve the above problems. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a highly viscous and reusable foam adhesive structure to solve the problems existing in the above-mentioned background technology.

[0005] The utility model provides the following technical solution: a high-viscosity and reusable foam adhesive structure, comprising a foam adhesive body, a glue bonding layer fixedly connected to the middle of the bottom end of the foam adhesive body, an EVA buffer foam layer substrate fixedly sleeved on the outer wall of the glue bonding layer near the bottom end, the bottom end of the EVA buffer foam layer substrate fixedly connected to a polyurethane waterproof layer, and the bottom end of the polyurethane waterproof layer adhesively connected to a water-based polyurethane glue.

[0006] Preferably, a protective film layer is bonded to the top of the foam adhesive body, and chimeric rubber blocks are bonded to both sides of the foam adhesive body and the EVA buffer foam layer substrate.

[0007] Preferably, the top of the water-based polyurethane glue is frosted, and the bottom of the polyurethane waterproof layer is adapted to the frosting of the top of the water-based polyurethane glue.

[0008] Preferably, the material of the water-based polyurethane adhesive is OT single-component water-based polyurethane adhesive, which has excellent wet tack, excellent bonding strength and excellent resistance to cold and hot shocks.

[0009] Preferably, the foam adhesive body, the glue bonding layer, the EVA buffer foam layer substrate, the water-based polyurethane adhesive and the polyurethane waterproof layer are all provided with pull-resistant tapes, and the pull-resistant tapes are distributed longitudinally.

[0010] Preferably, the thickness ratio of the foam adhesive body and the EVA buffer foam layer substrate is two to one, and the thickness of the water-based polyurethane adhesive and the polyurethane waterproof layer are the same.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The utility model is provided with a glue bonding layer and a water-based polyurethane glue. When using the device, it is beneficial to fix the foam adhesive body and the EVA buffer foam layer substrate together under the action of the glue bonding layer, ensuring that the foam adhesive body and the EVA buffer foam layer substrate can maintain their high viscosity when reused. Under the action of the mosaic glue block, the foam adhesive body and the EVA buffer foam layer substrate are further limited and fixed. At the same time, with the mutual cooperation of the water-based polyurethane glue and the polyurethane waterproof layer, the water-based polyurethane glue and the polyurethane waterproof layer are repeatedly pasted and used. The foam adhesive body, the glue bonding layer, the EVA buffer foam layer substrate, the water-based polyurethane glue and the polyurethane waterproof layer are internally provided with a pull-resistant tape, and the pull-resistant tape is distributed longitudinally, which is convenient for the use of the foam adhesive and has a good tensile resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 It is an exploded schematic diagram of the overall structure of the utility model.

[0015] Figure 3 It is a cross-sectional view of the overall structure of the utility model.

[0016] The accompanying drawings are marked as follows: 1. Protective film layer; 2. Foam adhesive body; 3. Chimeric rubber block; 4. Glue bonding layer; 5. EVA buffer foam layer base material; 6. Water-based polyurethane glue; 7. Polyurethane waterproof layer. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0018] The utility model provides a highly viscous and reusable foam adhesive structure, such as Figure 1-3As shown, it includes a foam backing adhesive body 2, a glue bonding layer 4 is fixedly connected to the middle of the bottom end of the foam backing adhesive body 2, an EVA buffer foam layer substrate 5 is fixedly sleeved on the outer wall near the bottom end of the glue bonding layer 4, the bottom end of the EVA buffer foam layer substrate 5 is fixedly connected to a polyurethane waterproof layer 7, and the bottom end of the polyurethane waterproof layer 7 is glued and connected with a water-based polyurethane glue 6.

[0019] Furthermore, a protective film layer 1 is glued to the top of the foam adhesive body 2, and a chimeric rubber block 3 is glued to both sides of the foam adhesive body 2 and the EVA buffer foam layer substrate 5, so that the foam adhesive body 2 and the EVA buffer foam layer substrate 5 can be limited and fixed under the action of the chimeric rubber block 3.

[0020] Furthermore, the top of the water-based polyurethane glue 6 is frosted, and the bottom of the polyurethane waterproof layer 7 is adapted to the frosted top of the water-based polyurethane glue 6, so that the water-based polyurethane glue 6 and the polyurethane waterproof layer 7 can be repeatedly pasted and used when the water-based polyurethane glue 6 and the polyurethane waterproof layer 7 are matched with each other.

[0021] Furthermore, the material of the water-based polyurethane glue 6 is OT818 single-component water-based polyurethane glue, which has excellent wet adhesion, excellent bonding strength and excellent resistance to cold and hot shocks. It is convenient to ensure that the overall foam backing can be repeatedly pasted and used under direct contact with the water-based polyurethane glue 6, and the high viscosity of the overall foam backing is guaranteed under the small gaps and high hydrophobicity of the material of the water-based polyurethane glue 6.

[0022] Furthermore, the foam adhesive body 2, the glue bonding layer 4, the EVA buffer foam layer substrate 5, the water-based polyurethane adhesive 6 and the polyurethane waterproof layer 7 are all provided with pull-resistant tapes, which are distributed longitudinally to facilitate the use of the foam adhesive with good tensile resistance.

[0023] Furthermore, the thickness ratio of the foam adhesive body 2 and the EVA buffer foam layer substrate 5 is two to one, and the thickness of the water-based polyurethane adhesive 6 and the polyurethane waterproof layer 7 are the same, so as to ensure the reusability and high viscosity of the foam adhesive.

[0024] The working principle of the present utility model: by providing a glue bonding layer 4 and a water-based polyurethane glue 6, when using the device, it is beneficial to fix the foam adhesive body 2 and the EVA buffer foam layer substrate 5 together under the action of the glue bonding layer 4, ensuring that the foam adhesive body 2 and the EVA buffer foam layer substrate 5 can maintain their high viscosity when reused, and under the action of the mosaic glue block 3, the foam adhesive body 2 and the EVA buffer foam layer substrate 5 are further limited and fixed, and at the same time, with the mutual cooperation of the water-based polyurethane glue 6 and the polyurethane waterproof layer 7, the water-based polyurethane glue 6 and the polyurethane waterproof layer 7 are repeatedly pasted and used, and the interior of the foam adhesive body 2, the glue bonding layer 4, the EVA buffer foam layer substrate 5, the water-based polyurethane glue 6 and the polyurethane waterproof layer 7 are all provided with pull-resistant tapes, which are distributed longitudinally, so as to facilitate the use of the foam adhesive with good tensile resistance.

[0025] Several points should be explained: First, it should be noted that in the description of this application, unless otherwise specified or limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change;

[0026] The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed in the present invention should be included in the protection scope recorded in the claims.

Claims

1. A highly viscous and reusable foam adhesive structure, comprising a foam adhesive body (2), characterized in that: The middle part of the bottom end of the foam adhesive body (2) is fixedly connected to a glue bonding layer (4); the outer wall of the glue bonding layer (4) close to the bottom end is fixedly sleeved with an EVA buffer foam layer substrate (5); the bottom end of the EVA buffer foam layer substrate (5) is fixedly connected to a polyurethane waterproof layer (7); and the bottom end of the polyurethane waterproof layer (7) is adhesively connected to a water-based polyurethane glue (6).

2. The highly viscous and reusable foam adhesive structure according to claim 1, characterized in that: The top of the foam adhesive body (2) is bonded with a protective film layer (1), and both sides of the foam adhesive body (2) and the EVA buffer foam layer substrate (5) are bonded with a chimeric adhesive block (3).

3. The high-viscosity re-adhesive foam adhesive structure according to claim 1, characterized in that: The top of the water-based polyurethane glue (6) is frosted, and the bottom of the polyurethane waterproof layer (7) is adapted to the frosted top of the water-based polyurethane glue (6).

4. The high-viscosity re-adhesive foam adhesive structure according to claim 1, characterized in that: The material of the water-based polyurethane glue (6) is OT818 single-component water-based polyurethane glue, which has excellent wet adhesion, excellent bonding strength and excellent resistance to cold and hot shocks.

5. The high-viscosity re-adhesive foam adhesive structure according to claim 1, characterized in that: The foam adhesive body (2), the glue bonding layer (4), the EVA buffer foam layer substrate (5), the water-based polyurethane adhesive (6) and the polyurethane waterproof layer (7) are all provided with pull-resistant strips inside, and the pull-resistant strips are distributed in the longitudinal direction.

6. The high-viscosity re-adhesive foam adhesive structure according to claim 1, characterized in that: The thickness ratio of the foam adhesive body (2) and the EVA buffer foam layer substrate (5) is two to one, and the thickness of the water-based polyurethane adhesive (6) and the polyurethane waterproof layer (7) are the same.

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