CN210560212U - Hot melt adhesive film structure for bonding ethylene propylene diene monomer rubber sealing strips - Google Patents
Hot melt adhesive film structure for bonding ethylene propylene diene monomer rubber sealing strips Download PDFInfo
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- CN210560212U CN210560212U CN201921536369.9U CN201921536369U CN210560212U CN 210560212 U CN210560212 U CN 210560212U CN 201921536369 U CN201921536369 U CN 201921536369U CN 210560212 U CN210560212 U CN 210560212U
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- melt adhesive
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- diene monomer
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Abstract
The utility model relates to a hot melt adhesive membrane structure for bonding EPDM rubber sealing strip, this structure is by leaving type membrane, ya keli glue film, yakeli bubble cotton, low energy surface pressure sensitive adhesive layer, and hot melt adhesive membrane constitutes, and the cotton one side of yakeli bubble is for leaving type membrane through the yakeli glue film connection, and the another side is the hot melt adhesive membrane through low energy pressure sensitive adhesive layer connection. The adhesive is not cleaned by solvent and treated by primer, so that the adhesive stripping force requirement of the automobile industry standard can be met, and the production efficiency of large-scale mass production is well improved.
Description
Technical Field
The utility model relates to a hot melt adhesive membrane structure for bonding EPDM rubber sealing strip belongs to the hot melt adhesive membrane field of bonding, especially belongs to a hot melt adhesive membrane field that bonds EPDM rubber.
Background
At present, the vast majority of automobile sealing strip materials adopt EPDM as a main raw material. Ethylene Propylene Diene Monomer (EPDM) rubber strip is formed by a microwave vulcanization process at one time, has smooth and attractive surface, excellent elasticity, compression deformation resistance, weather aging resistance, ozone resistance, chemical action resistance, wider use temperature range (-50 ℃ to +150 ℃) and the like, and is widely applied to the manufacturing industry of automobile door and window curtain walls and the like.
Because the molecular structure of the ethylene propylene diene monomer rubber lacks active groups, the cohesive energy is low, in addition, the sizing material is easy to frost, the self-adhesion and the mutual adhesion are very poor, the common hot melt adhesive film is difficult to meet the requirement of the bonding of Ethylene Propylene Diene Monomer (EPDM) adhesive tapes, the strength can not meet the requirement of the automobile industry (the stripping force of 180 degrees in normal test is more than 45N after 24 hours of low-temperature storage at minus 40 ℃, the stripping force of test is more than 30N after 96 hours of high-temperature air circulation test at 100 ℃, and the test method refers to GB/T2790).
At present, the surface of the EPDM rubber is usually cleaned by a solvent, ground, primed by a primer, and then bonded by a common hot melt adhesive film bonding process. The process uses solvent glue, is not favorable for the body of workers and is not environment-friendly; and the process flow is long, the process is complex and the yield is low.
In recent years, the research on the structure of the ethylene propylene diene monomer hot melt adhesive film is less, and the invention patent CN201310674780.3 provides a hot melt adhesive film for bonding ethylene propylene diene monomer, the invention discloses that the ethylene propylene diene monomer hot melt adhesive film (EPDM) is used for bonding automobile window flannelette decorative sealing strips, and the bonding effect on door sealing strips, decorative strips, insertion strips and other sealing strips is common.
Disclosure of Invention
An object of the utility model is to provide an easily bond, and bonding strength is big, convenient to use, without solvent washing, without the primer is handled, direct compound bonding when EPDM vulcanizes back high temperature can satisfy the novel hot melt adhesive membrane structure of the bonding strength requirement of automobile-used EPDM rubber sealing strip.
The utility model provides a hot melt adhesive membrane structure for bonding EPDM rubber sealing strip, this structure by from type membrane, ya keli glue film, yakeli bubble cotton, low energy surface pressure sensitive adhesive layer, hot melt adhesive membrane constitutes, and the cotton one side of yakeli bubble is from type membrane through yakeli glue film connection, and the another side is the hot melt adhesive membrane through low energy pressure sensitive adhesive layer connection. The hot melt adhesive film needs to be subjected to special plasma treatment before bonding.
The thickness of the acrylic foam is 0.25mm-3 mm.
The thickness of the hot melt adhesive film is 30-200 μm.
The thickness of the acrylic adhesive layer is 30-100 mu m.
The thickness of the low-energy surface pressure-sensitive adhesive layer is 10-100 mu m.
The release film is a PET release film, and the thickness of the release film is 20-50 mu m.
The cross section of the bonded ethylene propylene diene monomer rubber sealing strip is in various shapes such as a circle, a square or a flat shape.
The structure is characterized in that the structure is formed by directly and compositely bonding the acrylic foam substrate and the ethylene propylene diene monomer rubber at high temperature after vulcanization, the bonding is not cleaned by a solvent and treated by a primer, the bonding stripping force requirement of the automobile industry standard can be met, and the production efficiency of large-scale mass production is well improved.
Drawings
Fig. 1 is the structure diagram of the utility model, wherein, 1 is from type membrane 2 ya keli glue films, 3 ya keli bubble cotton, 4 low energy surface pressure sensitive adhesive layers, 5 hot melt adhesive membrane.
Detailed Description
Example 1
An acrylic adhesive layer 2 with the thickness of 40 mu m is coated on one surface of acrylic foam 3 with the thickness of 1mm, a 25 mu mPE release film 1 is attached to the acrylic adhesive layer, a 50 mu m low-energy surface pressure-sensitive adhesive layer 4 is coated on the other surface of the acrylic foam, and a 50 mu m hot melt adhesive film 5 after plasma treatment is attached. When the ethylene propylene diene monomer sealing strip is used, the ethylene propylene diene monomer sealing strip and the hot melt adhesive film are bonded at the temperature of 80-120 ℃, and the hot melt adhesive film and the ethylene propylene diene monomer are firmly bonded by normal temperature test and are in a structural bonding and dead bonding state.
Example 2
One surface of acrylic foam 3 with the thickness of 1mm is coated with an acrylic adhesive layer 2 with the thickness of 40 mu m, the acrylic adhesive layer is attached with a 25 mu mPE release film 1, the other surface of the acrylic foam is coated with a low-energy surface pressure-sensitive adhesive layer 4 with the thickness of 20 mu m, and a hot melt adhesive film 5 with the thickness of 40 mu m after plasma treatment is attached. When the ethylene propylene diene monomer sealing strip is used, the ethylene propylene diene monomer sealing strip and the hot melt adhesive film are bonded at the temperature of 80-120 ℃, and the hot melt adhesive film and the ethylene propylene diene monomer are firmly bonded by normal temperature test and are in a structural bonding and dead bonding state.
Claims (8)
1. The utility model provides a hot melt adhesive membrane structure for bonding EPDM rubber sealing strip which characterized in that, this structure is by from type membrane, ya keli glue film, yakeli bubble cotton, low energy surface pressure sensitive adhesive layer, and hot melt adhesive membrane constitutes, and the cotton one side of yakeli bubble is for the type membrane of leaving through yakeli glue film connection, and the another side is the hot melt adhesive membrane of connecting through low energy pressure sensitive adhesive layer.
2. The hot melt adhesive film structure for bonding the ethylene propylene diene monomer sealing strip according to claim 1, wherein; the hot melt adhesive film layer is a plasma special treatment layer.
3. The hot melt adhesive film structure for bonding the ethylene propylene diene monomer sealing strip according to claim 1, which is characterized in that: the thickness of the acrylic foam is 0.25mm-3 mm.
4. The hot melt adhesive film structure for bonding the ethylene propylene diene monomer sealing strip according to claim 1, which is characterized in that: the thickness of the hot melt adhesive film is 30-200 μm.
5. The hot melt adhesive film structure for bonding the ethylene propylene diene monomer sealing strip according to claim 1, which is characterized in that: the thickness of the acrylic adhesive layer is 30-100 mu m.
6. The hot melt adhesive film structure for bonding the ethylene propylene diene monomer sealing strip according to claim 1, which is characterized in that: the thickness of the low-energy surface pressure-sensitive adhesive layer is 10-100 mu m.
7. The hot melt adhesive film structure for bonding the ethylene propylene diene monomer sealing strip according to claim 1, which is characterized in that: the release film is a PET release film, and the thickness of the release film is 20-50 mu m.
8. The hot melt adhesive film structure for bonding the ethylene propylene diene monomer sealing strip according to claim 1, which is characterized in that: the cross section of the bonded ethylene propylene diene monomer rubber sealing strip is in various shapes such as a circle, a square or a flat shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921536369.9U CN210560212U (en) | 2019-09-16 | 2019-09-16 | Hot melt adhesive film structure for bonding ethylene propylene diene monomer rubber sealing strips |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921536369.9U CN210560212U (en) | 2019-09-16 | 2019-09-16 | Hot melt adhesive film structure for bonding ethylene propylene diene monomer rubber sealing strips |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210560212U true CN210560212U (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921536369.9U Active CN210560212U (en) | 2019-09-16 | 2019-09-16 | Hot melt adhesive film structure for bonding ethylene propylene diene monomer rubber sealing strips |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210560212U (en) |
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2019
- 2019-09-16 CN CN201921536369.9U patent/CN210560212U/en active Active
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