CN112778919A - Thermal bonding film for automotive interior and preparation process thereof - Google Patents
Thermal bonding film for automotive interior and preparation process thereof Download PDFInfo
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- CN112778919A CN112778919A CN202011643436.4A CN202011643436A CN112778919A CN 112778919 A CN112778919 A CN 112778919A CN 202011643436 A CN202011643436 A CN 202011643436A CN 112778919 A CN112778919 A CN 112778919A
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- 238000002360 preparation method Methods 0.000 title abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 25
- 239000004952 Polyamide Substances 0.000 claims abstract description 24
- 229920002647 polyamide Polymers 0.000 claims abstract description 24
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000004698 Polyethylene Substances 0.000 claims abstract description 18
- -1 polyethylene Polymers 0.000 claims abstract description 18
- 229920000573 polyethylene Polymers 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000010791 quenching Methods 0.000 claims abstract description 10
- 230000000171 quenching effect Effects 0.000 claims abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 7
- 238000001125 extrusion Methods 0.000 claims abstract description 3
- 238000002844 melting Methods 0.000 claims description 24
- 230000008018 melting Effects 0.000 claims description 24
- 238000010096 film blowing Methods 0.000 claims description 15
- 239000000155 melt Substances 0.000 claims description 13
- 239000002313 adhesive film Substances 0.000 claims description 12
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 239000000853 adhesive Substances 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 230000009965 odorless effect Effects 0.000 abstract description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 95
- 239000012790 adhesive layer Substances 0.000 description 14
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/50—Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2451/00—Presence of graft polymer
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2451/00—Presence of graft polymer
- C09J2451/003—Presence of graft polymer in the primer coating
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2477/00—Presence of polyamide
- C09J2477/006—Presence of polyamide in the substrate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a thermal bonding film for automotive interior, which is a 5-layer co-extrusion structure and comprises an outer bonding layer, a first bonding layer, a polyamide layer, a second bonding layer and an inner bonding layer from top to bottom. The outer bonding layer and the inner bonding layer are self-adhesive after being heated, can be directly used for bonding the automotive interior and the automotive steel plate, do not need automotive adhesive, are odorless, have no formaldehyde, are harmless to human bodies and are environment-friendly. The invention also discloses a preparation process of the thermal bonding film for the automotive interior, wherein a quenching process is added in the preparation process, so that the internal stress of the thermal bonding film is eliminated, the contractibility of the thermal bonding film after being rolled for 24 hours is reduced, and the thermal bonding film is more flat. Meanwhile, a nitrogen filling device is added in the preparation process, so that nitrogen protection is formed, and the problem of oxidation of the polyethylene raw material adopted in the thermal bonding film in the preparation process is solved.
Description
The technical field is as follows:
the invention relates to the technical field of adhesive films, in particular to a thermal adhesive film for automotive interior and a preparation process thereof.
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 invention content is as follows:
the present invention has been made in view of the above problems, and it is an object of the present invention to provide a heat bonding film for automotive interior and a process for preparing the same.
In order to achieve the purpose, the invention adopts the technical scheme that:
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 viscosityIs 3.5 to 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. 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.
A preparation process of a thermal bonding film for automotive interior comprises the following steps:
s1, adding the raw materials of the outer bonding layer into an extruder A of a five-layer film blowing machine set, melting at a set temperature of 225 ℃, and entering a multilayer die head;
adding the raw material of the first bonding layer into an extruder B of a five-layer film blowing unit, melting at a set temperature of 225 ℃, and entering a multilayer die head;
adding the raw materials of the polyamide layer into an extruder C of a five-layer film blowing machine set, melting at a set temperature of 250 ℃, and entering a multilayer die head;
adding the raw material of the second bonding layer into an extruder D of a five-layer film blowing unit, melting at a set temperature of 225 ℃, and entering a multilayer die head;
adding the raw materials of the inner bonding layer into an extruder E of a five-layer film blowing machine set, melting at a set temperature of 225 ℃, and entering a multilayer die head;
s2, distributing and converging the raw material melts of the layers through a flow channel, co-extruding the raw material melts from the same die, and simultaneously performing inflation to obtain a film bubble;
s3, cooling the blown film bubble in an air ring at the temperature of 15 ℃, and then carrying out IBC cooling treatment;
s4, flattening the film bubble by a herringbone frame plate to form a film sheet;
s5, the sheet film is dragged by a traction system to enter a quenching station, and quenching treatment is carried out under the temperature condition of 80-90 ℃;
and S6, slicing the quenched film slices by using a blade, and enabling the film slices to respectively enter two winding machines to be wound into film rolls.
Further, the multilayer die set temperature was 250 ℃.
Further, the unloading section of extruder A, extruder B, extruder D and extruder E is equipped with nitrogen gas filling device to make nitrogen gas constantly input extruder A, extruder B, extruder D and extruder E replace out oxygen, form nitrogen protection, avoid outer tie coat, first tie coat, second tie coat, interior tie coat raw and other materials polyethylene oxidation problem appear.
The invention has the beneficial effects that:
(1) according to the thermal bonding film for the automotive interior, the outer bonding layer and the inner bonding layer are self-adhesive after being heated, can be directly used for bonding the automotive interior and an automotive steel plate, do not need automotive adhesive, are odorless, are formaldehyde-free, are harmless to human bodies and are environment-friendly.
(2) According to the preparation process of the thermal bonding film for the automotive interior, provided by the invention, a quenching process is added for eliminating the internal stress of the thermal bonding film, reducing the contractility of the thermal bonding film for 24 hours after rolling, and simultaneously enabling the thermal bonding film to be smoother.
(3) The preparation process is added with the nitrogen filling device, so that nitrogen protection is formed, and the problem that polyethylene used as the raw materials of the outer bonding layer, the inner bonding layer, the first bonding layer and the second bonding layer is oxidized in the preparation process of the thermal bonding film is solved.
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 invention more readily understood by those skilled in the art, and thus will more clearly and distinctly define the scope of the invention.
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.
The preparation process of the thermal bonding film for automotive interior according to the embodiment is as follows:
s1, adding the polyethylene serving as the raw material of the outer bonding layer 1 into an extruder A of a five-layer film blowing machine set, melting at a set temperature of 225 ℃, and entering a multilayer die head;
adding the polyethylene serving as the raw material of the first bonding layer 2 into an extruder B of a five-layer film blowing unit, melting at a set temperature of 225 ℃, and feeding into a multilayer die head;
adding the raw material copolymerization PA of the polyamide layer 3 into an extruder C of a five-layer film blowing unit, melting at a set temperature of 250 ℃, and entering a multilayer die head;
adding the polyethylene serving as the raw material of the second bonding layer 4 into an extruder D of a five-layer film blowing unit, melting at a set temperature of 225 ℃, and entering a multilayer die head;
adding the raw material polyethylene of the inner bonding layer 5 into an extruder E of a five-layer film blowing machine set, melting at a set temperature of 225 ℃, and entering a multilayer die head;
wherein the set temperature of the multilayer die head is 250 ℃;
s2, distributing and converging the raw material melts of the layers through a flow channel, co-extruding the raw material melts from the same die, and simultaneously performing inflation to obtain a film bubble;
s3, cooling the blown film bubble in an air ring at the temperature of 15 ℃, and then carrying out IBC cooling treatment;
s4, flattening the film bubble by a herringbone frame plate to form a film sheet;
s5, the sheet membrane is dragged by a traction system to enter a quenching station, and quenching treatment is carried out under the temperature condition of 80 ℃;
and S6, slicing the quenched film slices by using a blade, and enabling the film slices to respectively enter two winding machines to be wound into film rolls.
In addition, the unloading section of extruder A, extruder B, extruder D and extruder E is equipped with nitrogen gas filling device heat bonding film preparation in-process so that nitrogen gas constantly inputs extruder A, extruder B, extruder D and extruder E, replace out oxygen, form nitrogen protection, avoid outer tie coat 1, first tie coat 2, second tie coat 4, interior tie coat 5 raw and other materials polyethylene oxidation problem appears.
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.
The process for preparing a thermal bonding film for automotive interior according to the present example is different from that of example 1 in that the quenching temperature in the step S5 is 90 ℃.
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 process for preparing a thermal bonding film for automotive interior according to this example is different from that of example 1 in that the quenching temperature in the step S5 is 85 ℃.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
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; 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.
6. 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.
7. 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.
8. The process for producing a heat bonding film for automotive interiors according to any one of claims 1 to 8, characterized by comprising: the method comprises the following steps:
s1, adding the raw materials of the outer bonding layer (1) into an extruder A of a five-layer film blowing machine set, melting at a set temperature of 225 ℃, and entering a multilayer die head;
adding the raw material of the first bonding layer (2) into an extruder B of a five-layer film blowing machine set, melting at a set temperature of 225 ℃, and entering a multilayer die head;
adding the raw materials of the polyamide layer (3) into an extruder C of a five-layer film blowing machine set, melting at a set temperature of 250 ℃, and entering a multilayer die head;
adding the raw material of the second bonding layer (4) into an extruder D of a five-layer film blowing machine set, melting at a set temperature of 225 ℃, and entering a multilayer die head;
adding the raw materials of the inner bonding layer (5) into an extruder E of a five-layer film blowing machine set, melting at a set temperature of 225 ℃, and entering a multilayer die head;
s2, distributing and converging the raw material melts of the layers through a flow channel, co-extruding the raw material melts from the same die, and simultaneously performing inflation to obtain a film bubble;
s3, cooling the blown film bubble in an air ring at the temperature of 15 ℃, and then carrying out IBC cooling treatment;
s4, flattening the film bubble by a herringbone frame plate to form a film sheet;
s5, the sheet film is dragged by a traction system to enter a quenching station, and quenching treatment is carried out under the temperature condition of 80-90 ℃;
and S6, slicing the quenched film slices by using a blade, and enabling the film slices to respectively enter two winding machines to be wound into film rolls.
9. The process for producing a heat adhesive film for automotive interiors according to claim 8, characterized by: the multilayer die set temperature was 250 ℃.
10. The process for producing a heat adhesive film for automotive interiors according to claim 8, characterized by: and the blanking sections of the extruder A, the extruder B, the extruder D and the extruder E are provided with nitrogen filling devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011643436.4A CN112778919A (en) | 2020-12-31 | 2020-12-31 | Thermal bonding film for automotive interior and preparation process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011643436.4A CN112778919A (en) | 2020-12-31 | 2020-12-31 | Thermal bonding film for automotive interior and preparation process thereof |
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| CN112778919A true CN112778919A (en) | 2021-05-11 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5660922A (en) * | 1991-10-01 | 1997-08-26 | Minnesota Mining And Manufacturing Company | Coextruded pressure-sensitive adhesive tape and method of making |
| CA2257724A1 (en) * | 1996-06-10 | 1997-12-18 | Alliedsignal Inc. | Multilayer polyamide film structures |
| US20030129428A1 (en) * | 1996-06-10 | 2003-07-10 | Mingliang Lawrence Tsai | Multilayer polyamide film structures |
| CN101351329A (en) * | 2005-12-30 | 2009-01-21 | 纳幕尔杜邦公司 | Heat shrinkable multilayer film and tube with improved adhesion after orientation |
| CN102307962A (en) * | 2008-12-19 | 2012-01-04 | 3M创新有限公司 | Method of manufacturing adhesive articles |
| CN104401079A (en) * | 2014-11-04 | 2015-03-11 | 浙江华江科技发展有限公司 | Functional composite hot-melt adhesive film for bonding lightweight GMT series automotive interior trims |
| US20170334175A1 (en) * | 2014-10-31 | 2017-11-23 | Dow Global Technologies Llc | Thermoformable multilayer elastomeric barrier articles for microfluidic delivery systems |
-
2020
- 2020-12-31 CN CN202011643436.4A patent/CN112778919A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5660922A (en) * | 1991-10-01 | 1997-08-26 | Minnesota Mining And Manufacturing Company | Coextruded pressure-sensitive adhesive tape and method of making |
| CA2257724A1 (en) * | 1996-06-10 | 1997-12-18 | Alliedsignal Inc. | Multilayer polyamide film structures |
| US20030129428A1 (en) * | 1996-06-10 | 2003-07-10 | Mingliang Lawrence Tsai | Multilayer polyamide film structures |
| CN101351329A (en) * | 2005-12-30 | 2009-01-21 | 纳幕尔杜邦公司 | Heat shrinkable multilayer film and tube with improved adhesion after orientation |
| CN102307962A (en) * | 2008-12-19 | 2012-01-04 | 3M创新有限公司 | Method of manufacturing adhesive articles |
| US20170334175A1 (en) * | 2014-10-31 | 2017-11-23 | Dow Global Technologies Llc | Thermoformable multilayer elastomeric barrier articles for microfluidic delivery systems |
| CN104401079A (en) * | 2014-11-04 | 2015-03-11 | 浙江华江科技发展有限公司 | Functional composite hot-melt adhesive film for bonding lightweight GMT series automotive interior trims |
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Application publication date: 20210511 |