CN215327854U - Thermal bonding film for automotive interior - Google Patents
Thermal bonding film for automotive interior Download PDFInfo
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- CN215327854U CN215327854U CN202023345661.8U CN202023345661U CN215327854U CN 215327854 U CN215327854 U CN 215327854U CN 202023345661 U CN202023345661 U CN 202023345661U CN 215327854 U CN215327854 U CN 215327854U
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- layer
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- automotive interior
- film
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- 239000004952 Polyamide Substances 0.000 claims abstract description 23
- 229920002647 polyamide Polymers 0.000 claims abstract description 23
- 239000004698 Polyethylene Substances 0.000 claims description 10
- 239000002313 adhesive film Substances 0.000 claims description 10
- -1 polyethylene Polymers 0.000 claims description 10
- 229920000573 polyethylene Polymers 0.000 claims description 10
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- 239000000155 melt Substances 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 230000002708 enhancing effect Effects 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 239000003292 glue Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 abstract description 2
- 230000009965 odorless effect Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 67
- 239000012790 adhesive layer Substances 0.000 description 14
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
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- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The utility model discloses a hot bonding film for automotive interior is 5 layers crowded structure altogether, from the top down includes outer tie coat, first tie coat, polyamide layer, second tie coat and interior tie coat in proper order. The outer bonding layer and the inner bonding layer are self-adhesive after being heated and are used for bonding the automotive interior and the automotive steel plate. The polyamide layer is used for enhancing the strength of the thermal bonding film and avoiding the thermal bonding film from being damaged in the using process. The first bonding layer and the second bonding layer are used for enhancing the bonding property of the outer bonding layer, the inner bonding layer and the polyamide layer, and are used for increasing the thickness of the outer bonding layer and the inner bonding layer and enhancing the peeling strength of the thermal bonding film. The utility model discloses a hot bonding membrane for automotive interior can directly be used for bonding automotive interior and automobile steel sheet, need not use the car to glue, and odorless, formaldehyde-free is harmless and environmental protection to the human body.
Description
The technical field is as follows:
the utility model relates to a binding film technical field especially relates to a hot binding film for automotive interior.
Background
In recent years, the automobile industry has been greatly developed, and automobile interiors have also been rapidly developed, and currently, in the technology, automobile glue is mostly used for bonding the automobile interiors and automobile steel plates, but the automobile glue contains formaldehyde which is volatilized for a long time, so that the automobile glue not only emits unpleasant smell in automobiles and has great influence on human health, but also causes air pollution. Because of the rapid development of the automobile industry, how to show the advantages of the automobile in various aspects such as performance, design and the like and gain market competitiveness is a technical problem faced by current automobile manufacturers, the cementation problem of the automobile trim in the automobile production also becomes a measure index of the additional value of the automobile along with the enhancement of health and environmental awareness of people, and the method of selecting the environment-friendly and healthy mode to bond the automobile trim and the automobile steel plate is imperative.
The utility model has the following contents:
the object of the present invention is to provide a thermal adhesive film for automotive interior, which can solve the above problems, in view of the drawbacks of the prior art.
In order to realize the purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a hot bonding film for automotive interior, hot bonding film is 5 layers and crowded structure altogether, includes outer tie coat, first tie coat, polyamide layer, second tie coat and interior tie coat. The outer bonding layer is arranged above the polyamide layer through the first bonding layer, and the inner bonding layer is arranged below the polyamide layer through the second bonding layer. The outer bonding layer and the inner bonding layer are self-adhesive after being heated and are used for bonding the automotive interior and the automotive steel plate. The polyamide layer is used for enhancing the strength of the thermal bonding film and avoiding the thermal bonding film from being damaged in the using process. The first bonding layer and the second bonding layer are used for enhancing the bonding property of the outer bonding layer, the inner bonding layer and the polyamide layer, and are used for increasing the thickness of the outer bonding layer and the inner bonding layer and enhancing the peeling strength of the thermal bonding film.
Further, the polyamide layer raw material is copolymerized PA.
Further, the density range of the copolymerized PA is 1.12-1.14 g/cm3The melting point is 210-230 ℃, and the relative viscosity is 3.5-4.5.
Furthermore, the raw materials of the outer bonding layer, the inner bonding layer, the first bonding layer and the second bonding layer are all maleic anhydride modified polyethylene.
Further, the density range of the maleic anhydride modified polyethylene selected for the first bonding layer and the second bonding layer is 0.91-0.925 g/cm3The melting point is 110-130 ℃, and the melt index is 1-2 g/10 min.
Further, the density range of the maleic anhydride modified polyethylene selected for the outer bonding layer and the inner bonding layer is 0.91-0.925 g/cm3The melting point is 110-130 ℃, and the melt index is 3-4 g/10 min. The outer bonding layer and the inner bonding layer are made of polyethylene with the melt index larger than that of the first bonding layer and that of the second bonding layer so as to ensure that the outer bonding layer and the inner bonding layer have good fluidity after being heated in the use process of the thermal bonding film and further ensure that the outer bonding layer and the inner bonding layer have good contact surfaces with an adherend.
Further, the thicknesses of the outer bonding layer and the inner bonding layer respectively account for 30% of the total film thickness; the thickness of the first bonding layer and the second bonding layer respectively accounts for 15% of the total film thickness, and the thickness of the polyamide layer accounts for 10% of the total film thickness.
Further, the thickness of the thermal bonding film for the automotive interior is 50-80 μm.
The beneficial effects of this utility are:
the utility model provides a thermal bonding membrane for automotive interior, outer tie coat and interior tie coat are from taking viscidity after the heating, can directly be used for bonding automotive interior and automobile steel sheet, need not use the car to glue, and odorless, formaldehyde-free is harmless and the environmental protection to the human body.
Description of the drawings:
fig. 1 is a schematic view showing the structure of a thermal adhesive film for automotive interior according to the present invention.
In the figure: 1 an outer adhesive layer; 2 a first adhesive layer; 3 a polyamide layer; 4 a second adhesive layer; 5 inner adhesive layer.
The specific implementation mode is as follows:
the following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model more readily understood by those skilled in the art, and thus will more clearly and distinctly define the scope of the utility model.
Example 1
Referring to fig. 1, the thermal adhesive film for automotive interiors in this embodiment is a 5-layer co-extrusion structure, and includes an outer adhesive layer 1, a first adhesive layer 2, a polyamide layer 3, a second adhesive layer 4, and an inner adhesive layer 5. The outer bonding layer 1 is arranged above the polyamide layer 3 through the first bonding layer 2, and the inner bonding layer 5 is arranged below the polyamide layer 3 through the second bonding layer 4.
Wherein:
the polyamide layer 3 is made of copolymerized PA with the density of 1.12-1.14 g/cm3The melting point is 210-230 ℃, and the relative viscosity is 3.5-4.5.
The outer bonding layer 1, the inner bonding layer 5, the first bonding layer 2 and the second bonding layer 4 are all made of maleic anhydride modified polyethylene, wherein the density range of the maleic anhydride modified polyethylene selected for the first bonding layer 2 and the second bonding layer 4 is 0.91-0.925 g/cm3The melting point is 110-130 ℃, and the melt index is 1-2 g/10 min. The density range of the maleic anhydride modified polyethylene selected for the outer bonding layer 1 and the inner bonding layer 5 is 0.91-0.925 g/cm3The melting point is 110-130 ℃, and the melt index is 3-4 g/10 min.
The thickness of the thermal bonding film in the embodiment is 50 μm, and the thicknesses of the outer bonding layer 1 and the inner bonding layer 5 respectively account for 30% of the total film thickness and are respectively 15 μm; the first adhesive layer 2 and the second adhesive layer 4 each have a thickness of 15% and 7.5 μm, respectively, and the polyamide layer 3 has a thickness of 10% and 5 μm, respectively, of the total film thickness.
Example 2:
the heat-bonding film for automotive interior of this example is different from example 1 in that: the thickness of the thermal bonding film is 80 μm, and the thicknesses of the outer bonding layer 1 and the inner bonding layer 5 respectively account for 30% of the total film thickness and are 24 μm respectively; the first adhesive layer 2 and the second adhesive layer 4 each have a thickness of 15% and 12 μm, respectively, based on the total film thickness, and the polyamide layer 3 has a thickness of 10% and 8 μm, respectively, based on the total film thickness.
Example 3:
the heat-bonding film for automotive interior of this example is different from example 1 in that: the thickness of the thermal bonding film is 65 μm, and the thicknesses of the outer bonding layer 1 and the inner bonding layer 5 respectively account for 30% of the total film thickness and are respectively 19.5 μm; the first adhesive layer 2 and the second adhesive layer 4 each had a thickness of 15% and 9.75 μm, respectively, and the polyamide layer 3 had a thickness of 10% and 6.5 μm, respectively, of the total film thickness.
The above-described embodiments are merely illustrative of several embodiments of the present invention, which are described in detail and detailed, but not intended to be construed as limiting the scope of the claims. It should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the spirit of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (8)
1. A heat-bonding film for automotive interior, characterized in that: the thermal bonding film is of a 5-layer co-extrusion structure and comprises an outer bonding layer (1), a first bonding layer (2), a polyamide layer (3), a second bonding layer (4) and an inner bonding layer (5), wherein the outer bonding layer (1) is arranged above the polyamide layer (3) through the first bonding layer (2); the inner bonding layer (5) is arranged below the polyamide layer (3) through the second bonding layer (4).
2. The heat adhesive film for automotive interior according to claim 1, characterized in that: the polyamide layer (3) is prepared from copolymerized PA.
3. The heat adhesive film for automotive interior according to claim 2, characterized in that: the density range of the copolymerized PA is 1.12-1.14 g/cm3The melting point is 210-230 ℃, and the relative viscosity is 3.5-4.5.
4. The heat adhesive film for automotive interior according to claim 1, characterized in that: the outer bonding layer (1), the inner bonding layer (5), the first bonding layer (2) and the second bonding layer (4) are all made of maleic anhydride modified polyethylene.
5. The heat adhesive film for automotive interior according to claim 4, characterized in that: the density range of the maleic anhydride modified polyethylene selected for the first bonding layer (2) and the second bonding layer (4) is 0.91-0.925 g/cm3The melting point is 110-130 ℃, and the melt index is 1-2 g/10 min.
6. The heat adhesive film for automotive interior according to claim 4, characterized in that: the density range of the maleic anhydride modified polyethylene selected for the outer bonding layer (1) and the inner bonding layer (5) is 0.91-0.925 g/cm3The melting point is 110-130 ℃, and the melt index is 3-4 g/10 min.
7. The heat adhesive film for automotive interior according to claim 1, characterized in that: the thicknesses of the outer bonding layer (1) and the inner bonding layer (5) respectively account for 30% of the total film thickness; the thicknesses of the first bonding layer (2) and the second bonding layer (4) respectively account for 15% of the total film thickness, and the thickness of the polyamide layer (3) accounts for 10% of the total film thickness.
8. The heat adhesive film for automotive interior according to claim 1, characterized in that: the thickness of the thermal bonding film for the automotive interior is 50-80 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023345661.8U CN215327854U (en) | 2020-12-31 | 2020-12-31 | Thermal bonding film for automotive interior |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023345661.8U CN215327854U (en) | 2020-12-31 | 2020-12-31 | Thermal bonding film for automotive interior |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215327854U true CN215327854U (en) | 2021-12-28 |
Family
ID=79571400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023345661.8U Active CN215327854U (en) | 2020-12-31 | 2020-12-31 | Thermal bonding film for automotive interior |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215327854U (en) |
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2020
- 2020-12-31 CN CN202023345661.8U patent/CN215327854U/en active Active
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