Embossed barrier isolating membrane and tire-free self-adhesive waterproof coiled material
By designing an embossed barrier isolation film, the problem of self-adhesive waterproof coils without tires is solved, and the problem of self-adhesive decay and uneven appearance after long-term storage is achieved, and good initial viscosity and surface flatness are achieved.
Patent Information
- Application Number
- CN202422288936.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-09-19
AI Technical Summary
The tireless self-adhesive waterproof coil has self-adhesiveness and its appearance is uneven after long-term storage. The existing non-barrier PE isolation film has poor viscosity, and the barrier PE film has severe wrinkles.
A barrier film with embossed and barrier layers is designed. The embossed shape is rectangular, with long sides parallel to the long sides of the film body and pressed between the short side direction. The barrier layer is located between the PE film layer and the release agent layer to prevent small molecules from precipitating out of the self-adhesive layer and maintain initial viscosity and flatness.
The tireless self-adhesive waterproof coil has been realized to maintain good initial viscosity and surface flatness after long-term storage, and solve the problems of self-adhesive attenuation and wrinkles.
Smart Images
Figure CN223252526U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of waterproof coiled materials, and more specifically relates to an embossed barrier isolation film and a tireless self-adhesive waterproof coiled material. Background Art
[0002] As a building material, the appearance and initial adhesion characteristics of tireless self-adhesive waterproof membrane are of great reference value to construction workers and buyers. It is relatively difficult to make tireless self-adhesive waterproof membrane have both a smooth appearance and good long-term initial adhesion. For tireless self-adhesive waterproof membrane, when a non-barrier PE isolation film is used as the lower surface isolation material, the surface of the membrane is flat and wrinkle-free. However, after long-term storage, the initial adhesion of the self-adhesive layer on the lower surface of the membrane decays rapidly, seriously affecting the adhesion effect and waterproof performance of the membrane; when a PE film or polyester PET film with a barrier layer is used as the lower surface isolation material, it can effectively ensure that the membrane maintains good initial adhesion and bonding properties during long-term storage. However, the rigidity of the PE film or polyester PET film with a barrier layer can easily lead to poor surface flatness of the membrane and severe wrinkles after rolling, which in turn seriously affects the waterproof effect of the lap joint.
[0003] Therefore, it is urgent to develop a lower surface isolation membrane that can make the tireless self-adhesive waterproof membrane have a smooth appearance and good long-term initial adhesion. Utility Model Content
[0004] This utility model addresses the shortcomings of existing technologies by providing an embossed barrier film. This utility model designs and develops a film with an embossed and barrier layer. Using this film, the tireless self-adhesive waterproof membrane not only maintains a smooth appearance but also maintains good initial tack and adhesive properties even after long-term storage.
[0005] In order to achieve the above-mentioned purpose, the present invention provides, on the one hand, an embossed barrier isolation film, wherein the embossing on the film body of the embossed barrier isolation film is in the shape of a rectangle, the side that curls when the film body is rolled up is the short side of the film body, the long side of the embossing is parallel to the long side of the film body, and the embossing is pressed at intervals along the short side direction of the film body.
[0006] Preferably, the length of the long side of the embossing is equal to the length of the long side of the film body.
[0007] Preferably, the distance between two adjacent embossments in the short side direction of the film body is the same or different.
[0008] Preferably, a plurality of embossments are formed at intervals along the long side direction of the film body.
[0009] Preferably, the distance between two adjacent embossments in the long side direction of the film body is the same or different; the distance between two adjacent embossments in the short side direction of the film body is the same or different.
[0010] Preferably, the film body comprises a release agent layer, a barrier layer and a film layer stacked in sequence from top to bottom.
[0011] Preferably, the release agent layer is made of one of silicone, fluorinated silicone, silicone copolymer and fluorine-containing polymer.
[0012] Preferably, the barrier layer is made of one of polyethylene terephthalate, polyimide, polyamide, polyethylene naphthalate and vinylidene chloride-acrylonitrile copolymer.
[0013] Preferably, the material of the film layer is one of low-density polyethylene film, medium-density polyethylene film and high-density polyethylene film.
[0014] On the other hand, the present invention provides a tireless self-adhesive waterproof membrane, wherein the isolation film on the lower surface of the tireless self-adhesive waterproof membrane is the embossed barrier isolation film.
[0015] The beneficial effects of the technical solution of the utility model are as follows:
[0016] This utility model designs and develops a barrier film with an embossed and barrier layer. Using this barrier film not only ensures a smooth appearance for tireless self-adhesive waterproof membranes, but also maintains excellent initial tack and adhesion properties even after long-term storage. This utility model effectively addresses the poor adhesion retention of conventional non-barrier PE barrier films, as well as the wrinkling problem of conventional barrier PE films causing tireless self-adhesive waterproof membranes to appear wrinkled.
[0017] This new barrier film serves as the lower surface barrier for a non-stick waterproof membrane. It features an embossed design with rectangular patterns, the long sides of which are parallel to the long sides of the barrier film. When the membrane is rewound, the embossed patterns on the lower surface stretch out, preventing the barrier film from exerting pressure on the adhesive layer and the surface material due to rewinding tension (the stretching embossing cushions the tension generated by winding), effectively preventing wrinkles and unevenness on the membrane's upper surface.
[0018] The isolation film of the utility model adopts a PE film with a barrier layer. The barrier layer is located between the PE film layer and the release agent layer. The barrier layer can effectively prevent the precipitation of small molecular oil in the self-adhesive layer of the tireless self-adhesive waterproof membrane, thereby ensuring the long-term stability of the self-adhesive layer of the tireless self-adhesive waterproof membrane. After long-term storage, the self-adhesive layer of the tireless self-adhesive waterproof membrane still has good initial adhesion and bonding effect.
[0019] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.
[0021] Figure 1 A side view of an embossed barrier isolation film disclosed in Example 1 of the present invention is shown.
[0022] Figure 2 A top view of an embossed barrier isolation film disclosed in Example 1 of the present invention is shown.
[0023] Figure 3 A side view of an embossed barrier isolation film disclosed in Example 2 of the present invention is shown.
[0024] Figure 4 A top view of an embossed barrier isolation film disclosed in Example 2 of the present invention is shown.
[0025] The following are the descriptions of the reference numerals:
[0026] 1 Embossed; 2 Long side of embossed; 3 Short side of embossed; 4 Short side of film; 5 Long side of film. DETAILED DESCRIPTION
[0027] The following describes preferred embodiments of the present invention in greater detail. Although preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.
[0028] On the one hand, the utility model provides an embossed barrier isolation film, wherein the embossing on the film body of the embossed barrier isolation film is in the shape of a rectangle, the side that curls when the film body is rolled up is the short side of the film body, the long side of the embossing is parallel to the long side of the film body, and the embossing is pressed at intervals along the short side direction of the film body.
[0029] In the present invention, the depth of the embossing is designed according to production needs.
[0030] In one example, the length of the long side of the embossing is equal to the length of the long side of the film body.
[0031] In one example, the distances between two adjacent embossments in the short side direction of the film body are the same or different.
[0032] In one example, a plurality of embossments are formed at intervals along the long side direction of the film body.
[0033] In this utility model, the production process of the tireless self-adhesive waterproof membrane is as follows: a separator (i.e., the embossed barrier separator of this utility model) is covered on a cooled steel rod / steel belt, and then a self-adhesive adhesive with a temperature above 150°C is applied on the separator, and then the upper surface of the tireless self-adhesive waterproof membrane is coated. Figure 4 The purpose of the design (multiple embossments are pressed at intervals along the long side of the membrane body) is to prevent the embossing of the isolation membrane from being completely flattened under high temperature environment and large production tension, and effectively ensure that the isolation membrane still retains part of the embossed shape before the tireless self-adhesive waterproof membrane is rolled, thereby ensuring that the surface of the tireless self-adhesive waterproof membrane is flat and wrinkle-free after rolling.
[0034] In one example, the distance between two adjacent embossments in the long side direction of the film body is the same or different; the distance between two adjacent embossments in the short side direction of the film body is the same or different.
[0035] In one example, the film body includes a release agent layer, a barrier layer, and a film layer stacked sequentially from top to bottom.
[0036] In one example, the release agent layer is made of one of silicone, fluorinated silicone, silicone copolymer and fluorine-containing polymer.
[0037] In one example, the barrier layer is made of one of polyethylene terephthalate, polyimide, polyamide, polyethylene naphthalate and vinylidene chloride-acrylonitrile copolymer.
[0038] In one example, the material of the film layer is one of low-density polyethylene film, medium-density polyethylene film and high-density polyethylene film.
[0039] On the other hand, the present invention provides a tireless self-adhesive waterproof membrane, wherein the isolation film on the lower surface of the tireless self-adhesive waterproof membrane is the embossed barrier isolation film.
[0040] Example 1
[0041] This embodiment provides an embossed barrier isolation film, such as Figure 1 、 2 As shown, the embossing 1 on the film body of the embossed barrier isolation film is in the shape of a rectangle, the side that curls when the film body is rolled up is the short side 4 of the film body, the long side 2 of the embossing is parallel to the long side 5 of the film body, and the embossing 1 is pressed at intervals along the short side 4 of the film body.
[0042] Furthermore, the length of the long side 2 of the embossing is equal to the length of the long side 5 of the film. The distance between two adjacent embossings 1 in the direction of the short side 4 of the film is the same. The short sides 3 of the embossings are the same length.
[0043] The film body comprises a release agent layer, a barrier layer and a film layer which are sequentially stacked from top to bottom.
[0044] The material of the release agent layer is dimethyl silicone oil;
[0045] The barrier layer is made of polyamide;
[0046] The material of the film layer is high-density polyethylene film.
[0047] Example 2
[0048] This embodiment provides an embossed barrier isolation film, such as Figure 3 、 4 As shown, the difference between this embodiment and embodiment 1 is only that:
[0049] The embossing 1 on the film body of the embossed barrier isolation film is in the shape of a rectangle, the side that curls when the film body is rolled up is the short side 4 of the film body, the long side 2 of the embossing is parallel to the long side 5 of the film body, and the embossing 1 is pressed at intervals along the short side 4 of the film body.
[0050] Furthermore, a plurality of embossments 1 are formed at intervals along the long sides 5 of the film. The distance between adjacent embossments 1 along the long sides 5 of the film is the same, and the distance between adjacent embossments 1 along the short sides 4 of the film is the same. The short sides 3 of each embossment are the same length. The long sides 2 of each embossment are the same length.
[0051] Comparative Example 1
[0052] This comparative example provides a non-embossed non-barrier PE isolation film, wherein the film body comprises a release agent layer and a film layer stacked from top to bottom.
[0053] The material of the release agent layer is dimethyl silicone oil;
[0054] The material of the film layer is high-density polyethylene film.
[0055] Comparative Example 2
[0056] This comparative example provides a non-embossed barrier PE isolation film, wherein the film body includes a release agent layer and a film layer stacked from top to bottom.
[0057] The material of the release agent layer is dimethyl silicone oil;
[0058] The barrier layer is made of polyamide;
[0059] The material of the film layer is high-density polyethylene film.
[0060] Test Case
[0061] This test example uses the isolation films of the above-mentioned embodiments and comparative examples as the lower surface isolation films to prepare tireless self-adhesive waterproof membranes, and compares the appearance, initial adhesion after 0 storage period, and initial adhesion after 6 months of storage of the four tireless self-adhesive waterproof membranes. The storage environment is: humidity (50±5)%, temperature (23±2)°C.
[0062] Among them, the adhesive of each tireless self-adhesive waterproof membrane is self-adhesive modified asphalt adhesive, and the upper surface reinforcement material used is also the same.
[0063] The test was carried out using a probe-type initial adhesion tester, and the test results are shown in Table 1.
[0064] Table 1
[0065]
[0066] As can be seen from Table 1, the isolation film of the present invention effectively solves the problem of poor adhesion retention of ordinary non-barrier PE isolation films, and solves the problem of wrinkles on the appearance of tireless self-adhesive waterproof membrane caused by ordinary barrier PE films, so that the tireless self-adhesive waterproof membrane has a smooth appearance and good initial adhesion retention.
[0067] While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.
Claims
1. An embossed barrier film, characterized in that: The embossing on the film body of the embossed barrier isolation film is in the shape of a rectangle, the side that curls when the film body is rolled up is the short side of the film body, the long side of the embossing is parallel to the long side of the film body, and the embossing is pressed at intervals along the short side direction of the film body.
2. The embossed barrier release film according to claim 1, wherein: The length of the long side of the embossing is equal to the length of the long side of the film.
3. The embossed barrier release film according to claim 2, wherein: The distance between two adjacent embossments in the short side direction of the film body is the same or different.
4. The embossed barrier release film according to claim 1, wherein: A plurality of the embossments are formed at intervals along the longitudinal direction of the film.
5. The embossed barrier release film according to claim 4, wherein: The distance between two adjacent embossments in the long side direction of the film body is the same or different; the distance between two adjacent embossments in the short side direction of the film body is the same or different.
6. The embossed barrier release film according to claim 1, wherein: The film body comprises a release agent layer, a barrier layer and a film layer which are sequentially stacked from top to bottom.
7. The embossed barrier release film according to claim 6, wherein: The release agent layer is made of one of silicone, fluorinated silicone, silicone copolymer and fluorine-containing polymer.
8. The embossed barrier release film according to claim 6, wherein: The material of the barrier layer is one of polyethylene terephthalate, polyimide, polyamide, polyethylene naphthalate and vinylidene chloride-acrylonitrile copolymer.
9. The embossed barrier release film according to claim 6, wherein: The material of the film layer is one of low-density polyethylene film, medium-density polyethylene film and high-density polyethylene film.
10. A tireless self-adhesive waterproof membrane, characterized in that: The lower surface isolation film of the tireless self-adhesive waterproof membrane is the embossed barrier isolation film according to any one of claims 1 to 9.