Polyurethane foam base material adhesive tape

Abstract

The utility model discloses a polyurethane foam base material adhesive tape, which relates to the technical field of polyurethane foam base material adhesive tapes, and comprises an adhesive tape body and release paper, the release paper is adhered to the surface of the adhesive tape body, a tearing tape is arranged on the release paper, the tearing tape consists of a plurality of separation holes which are uniformly distributed along the width direction of the release paper, and the separation holes are uniformly distributed along the width direction of the release paper. The separation hole is formed in one side, back on to the adhesive tape body, of the release paper, does not penetrate through the release paper, the separation hole is in a circular truncated cone shape, and the inner diameter of one end, far away from the adhesive tape body, of the separation hole is large. According to the polyurethane foam base material adhesive tape, the tearing tape composed of the multiple separation holes is arranged, the release paper can be broken along the multiple separation holes, the situation of irregular breakage is avoided, meanwhile, the separation holes do not penetrate through the release paper, and the polyurethane foam base material adhesive tape is used, so that the face, close to the release paper, of the adhesive tape body does not make direct contact with the outside, and the service life of the adhesive tape is prolonged. The use performance of the polyurethane foam base material adhesive tape is not influenced.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane foam substrate tape technology, and in particular to a polyurethane foam substrate tape. Background Technology

[0002] Rigid polyurethane foam is a high-molecular polymer made primarily from isocyanate and polyether, mixed using specialized equipment with the aid of foaming agents, catalysts, flame retardants, and other additives, and then foamed on-site through high-pressure spraying. Polyurethane foam comes in two types: flexible and rigid. Flexible foam has an open-cell structure, while rigid foam has a closed-cell structure; flexible foam is further divided into skinned and non-skinned types.

[0003] Polyurethane foam can be used as a substrate to make tapes. In existing technologies, when polyurethane foam substrate tapes are used in sections, the release paper is prone to irregular breakage, exposing a small amount of substrate and causing the release paper to separate from the substrate, affecting subsequent use.

[0004] Therefore, it is necessary to propose a polyurethane foam substrate adhesive tape to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a polyurethane foam substrate tape to solve the problem in the prior art that when polyurethane foam substrate tape is used in sections, the release paper is prone to irregular breakage, resulting in a small amount of substrate being exposed, causing the release paper to separate from the substrate and affecting subsequent use.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a polyurethane foam substrate tape, comprising a tape body and a release paper, wherein the release paper is adhered to the surface of the tape body, and the release paper is provided with a tear strip, the tear strip being composed of a plurality of separation holes evenly distributed along the width direction of the release paper, the separation holes being opened on the side of the release paper opposite to the tape body, and the separation holes not penetrating the release paper.

[0007] Preferably, the separation hole is frustum-shaped, and the end of the separation hole furthest from the tape body has a larger inner diameter.

[0008] Preferably, multiple tear strips are provided, and the multiple tear strips are evenly distributed.

[0009] Preferably, the tape body comprises, in sequence, a polyurethane foam surface layer, a buffer layer, a polyurethane foam liner, and a wear-resistant layer in the direction away from the release paper.

[0010] Preferably, the buffer layer includes a buffer strip and a sealing strip, both of which are distributed along the length of the tape body. Two sealing strips are provided, and the buffer strip is located between the two sealing strips.

[0011] Preferably, the side of the buffer strip closest to the polyurethane foam surface layer is wavy.

[0012] Preferably, the polyurethane foam padding is provided with through holes, and the through holes are provided in multiple ways, with the multiple through holes being evenly distributed.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model sets a tear strip composed of multiple separation holes, so that the release paper will break along the multiple separation holes without irregular breakage. At the same time, the separation holes do not penetrate the release paper, ensuring the use of polyurethane foam substrate tape. This prevents the side of the tape body close to the release paper from directly contacting the outside world and does not affect the performance of polyurethane foam substrate tape.

[0015] 2. The separation hole is truncated cone-shaped, with a larger inner diameter at the end of the separation hole furthest from the tape body. When the polyurethane foam substrate tape is bent, the separation hole can adapt to deformation, reducing the chance of the release paper separating from the tape body.

[0016] 3. The tape body includes a polyurethane foam surface layer, a buffer layer, a polyurethane foam padding, and a wear-resistant layer. Compared with the existing single layer of foam, it effectively improves the cushioning and shock absorption effect while ensuring the strength of the tape body.

[0017] 4. Two sealing strips are installed to protect the buffer strip and prevent voids from appearing on both sides of the tape body, thus ensuring the overall structure is airtight.

[0018] 5. The design incorporates features such as buffer strips and through-holes to effectively reduce impact and improve cushioning performance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the polyurethane foam substrate tape structure of this utility model.

[0020] Figure 2 This is a cross-sectional view of the polyurethane foam substrate tape of this utility model.

[0021] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0022] Figure 4 This is a schematic diagram of the release paper and polyurethane foam surface layer structure of this utility model.

[0023] In the diagram: 1. Adhesive tape body; 2. Release paper; 3. Separation hole; 4. Polyurethane foam surface layer; 5. Buffer layer; 6. Polyurethane foam pad; 7. Abrasion-resistant layer; 8. Through hole; 9. Buffer strip; 10. Sealing strip. Detailed Implementation

[0024] This utility model provides, for example Figures 1-4 The polyurethane foam-based tape shown includes a tape body 1 and a release paper 2, with the release paper 2 adhered to the surface of the tape body 1.

[0025] Considering that the release paper 2 is prone to irregular breakage when the polyurethane foam substrate tape is used in sections, in order to improve the effect of section use, tear strips are provided on the release paper 2. There are multiple tear strips, which are evenly distributed. The distance between two adjacent tear strips can be adjusted according to the specific use. For example, when it is mainly used to bond long objects, the distance between two adjacent tear strips is larger.

[0026] The tear strip consists of multiple separation holes 3 evenly distributed along the width of the release paper 2. In actual use, the polyurethane foam substrate tape can be torn along the tear strip. Because multiple separation holes 3 are pre-set evenly distributed along the width of the release paper 2, the release paper 2 will break along the multiple separation holes 3, and there will be no irregular breakage.

[0027] Considering that external dust and moisture can easily affect the tape body 1 through the separation hole 3, in order to protect the tape body 1, the separation hole 3 is opened on the side of the release paper 2 that is away from the tape body 1, and the separation hole 3 does not penetrate the release paper 2. This ensures the use of polyurethane foam substrate tape, and prevents the side of the tape body 1 close to the release paper 2 from directly contacting the outside world, thus not affecting the performance of polyurethane foam substrate tape.

[0028] The separation hole 3 is frustoconical in shape. The end of the separation hole 3 that is far from the tape body 1 has a large inner diameter. When the polyurethane foam substrate tape is bent, the separation hole 3 can adapt to deformation, reducing the possibility of the release paper 2 separating from the tape body 1.

[0029] The tape body 1, in the direction away from the release paper 2, includes a polyurethane foam surface layer 4, a buffer layer 5, a polyurethane foam padding 6, and an abrasion-resistant layer 7 in sequence. The polyurethane foam surface layer 4, buffer layer 5, polyurethane foam padding 6, and abrasion-resistant layer 7 are all connected to each other by a hot-pressing process. The buffer layer 5 is made of polyurethane foam. The tape body 1 includes a polyurethane foam surface layer 4, a buffer layer 5, a polyurethane foam padding 6, and an abrasion-resistant layer 7. Compared with the existing single layer of foam, it effectively improves the cushioning and shock absorption effect, while ensuring the strength of the tape body 1.

[0030] The wear-resistant layer 7 can be made of, but is not limited to, polyvinyl chloride material, and has a wear-resistant effect to ensure the wear resistance of the polyurethane foam substrate tape.

[0031] In a specific configuration, the buffer layer 5 includes a buffer strip 9 and a sealing strip 10. Both the buffer strip 9 and the sealing strip 10 are distributed along the length of the tape body 1. There are two sealing strips 10, and the buffer strip 9 is located between the two sealing strips 10. The side of the buffer strip 9 that is close to the polyurethane foam surface layer 4 is wavy, which has a good deformation effect, so as to buffer the deformation when the tape body 1 is subjected to external pressure.

[0032] Two sealing strips 10 are installed to protect the buffer strip 9, while ensuring that there are no voids on both sides of the tape body 1, thus guaranteeing the overall sealing performance of the structure.

[0033] When the polyurethane foam substrate tape needs to be bonded to the surface of an object for impact protection, the buffer layer 5 will undergo elastic deformation when compressed, effectively reducing the impact force and improving the buffering performance.

[0034] The polyurethane foam pad 6 has multiple through holes 8, which are evenly distributed. These through holes 8 ensure the deformation resistance of the polyurethane foam pad 6. Under compression, the polyurethane foam pad 6 undergoes secondary cushioning treatment, further improving its cushioning performance.

Claims

1. A polyurethane foam based adhesive tape comprising a tape body (1) and a release paper (2), characterized in that: The release paper (2) is adhered to the surface of the adhesive tape body (1), a tear strip is arranged on the release paper (2), the tear strip is composed of a plurality of separation holes (3) uniformly distributed along the width direction of the release paper (2), the separation hole (3) is arranged on the side of the release paper (2) away from the adhesive tape body (1), and the separation hole (3) does not penetrate the release paper (2).

2. The polyurethane foam-based adhesive tape according to claim 1, characterized in that: The separation hole (3) is in the shape of a circular truncated cone, and the inner diameter of the end of the separation hole (3) away from the adhesive tape body (1) is large.

3. The polyurethane foam-based adhesive tape according to claim 1, characterized in that: A plurality of tear strips are arranged, and the plurality of tear strips are uniformly distributed.

4. The polyurethane foam-based adhesive tape according to claim 3, characterized in that: The adhesive tape body (1) sequentially comprises a polyurethane foam surface layer (4), a buffer layer (5), a polyurethane foam pad (6) and a wear-resistant layer (7) away from the release paper (2).

5. The polyurethane foam-based adhesive tape according to claim 4, characterized in that: The buffer layer (5) comprises a buffer strip (9) and a sealing strip (10), the buffer strip (9) and the sealing strip (10) are arranged along the length direction of the adhesive tape body (1), the sealing strip (10) is arranged in two, and the buffer strip (9) is located between the two sealing strips (10).

6. The polyurethane foam-based adhesive tape according to claim 5, characterized in that: The side of the buffer strip (9) close to the polyurethane foam surface layer (4) is in a wave shape.

7. The polyurethane foam-based adhesive tape according to claim 5, characterized in that: The polyurethane foam pad (6) is provided with a through hole (8), and the through hole (8) is arranged in a plurality of, and the plurality of through holes (8) are arranged at equal distances.

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