CN106379012A - Anti-slip material used for automobile interior foot pad and preparation method thereof - Google Patents
Anti-slip material used for automobile interior foot pad and preparation method thereof Download PDFInfo
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- CN106379012A CN106379012A CN201610777609.9A CN201610777609A CN106379012A CN 106379012 A CN106379012 A CN 106379012A CN 201610777609 A CN201610777609 A CN 201610777609A CN 106379012 A CN106379012 A CN 106379012A
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- parts
- foot pad
- automotive trim
- pvc
- slip material
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- 239000000463 material Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 34
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 10
- 239000007822 coupling agent Substances 0.000 claims abstract description 7
- 239000004088 foaming agent Substances 0.000 claims abstract description 7
- 239000003381 stabilizer Substances 0.000 claims abstract description 7
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 5
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 5
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000008117 stearic acid Substances 0.000 claims abstract description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 16
- 150000001875 compounds Chemical class 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 6
- 239000012467 final product Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 5
- 240000006122 Chenopodium album Species 0.000 claims description 3
- 235000009344 Chenopodium album Nutrition 0.000 claims description 3
- 241000790917 Dioxys <bee> Species 0.000 claims description 3
- 229910003978 SiClx Inorganic materials 0.000 claims description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 3
- 241000489523 Veratrum Species 0.000 claims description 3
- 238000013019 agitation Methods 0.000 claims description 3
- 235000010216 calcium carbonate Nutrition 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 238000012986 modification Methods 0.000 claims description 3
- 229940088417 precipitated calcium carbonate Drugs 0.000 claims description 3
- 229910000077 silane Inorganic materials 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 2
- 229930189630 Protoveratrine Natural products 0.000 abstract 1
- HYTGGNIMZXFORS-MGYKWWNKSA-N Protoveratrine A Chemical compound O1[C@@]([C@H](CC[C@]23C)OC(=O)[C@@](C)(O)CC)(O)[C@H]3[C@@H](OC(C)=O)[C@@H](OC(C)=O)[C@@H]3[C@@]12C[C@H]1[C@H](CN2[C@@H](CC[C@H](C)C2)[C@@]2(C)O)[C@@H]2[C@@H](O)[C@H](OC(=O)[C@H](C)CC)[C@@]31O HYTGGNIMZXFORS-MGYKWWNKSA-N 0.000 abstract 1
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract 1
- 238000005187 foaming Methods 0.000 description 13
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000007373 indentation Methods 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- DCXXMTOCNZCJGO-UHFFFAOYSA-N tristearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC DCXXMTOCNZCJGO-UHFFFAOYSA-N 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N 1,4a-dimethyl-7-propan-2-yl-2,3,4,4b,5,6,10,10a-octahydrophenanthrene-1-carboxylic acid Chemical compound C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002649 leather substitute Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Classifications
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- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/245—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam layer
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- B60N3/00—Arrangements or adaptations of other passenger fittings, not otherwise provided for
- B60N3/04—Arrangements or adaptations of other passenger fittings, not otherwise provided for of floor mats or carpets
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- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
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- B32B2605/00—Vehicles
- B32B2605/08—Cars
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Materials Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
The invention provides an anti-slip material used for an automobile interior foot pad and a preparation method thereof. The anti-slip material comprises the following components in parts by weight: 40 parts of PVC, 0.5 parts of a coupling agent, 5 parts of stearic acid, 5 parts of modified silica powder, 3 parts of a composite stabilizing agent, 6 parts of light calcium carbonate, 0.5 parts of PE wax, 1 part of an AC foaming agent, and 0.5 parts of didesacetyl protoveratrine. An anti-slip layer is produced by an automobile interior foot pad material, the automobile interior foot pad material employs a PVC material with good heat insulation and water resistance performances, the modified silica is employed, so that the anti-slip material has the advantages of saved production cost, high production efficiency, and environmental protection.
Description
Technical field
The present invention relates to technical field of automotive trim, more particularly, to a kind of automotive trim foot pad anti-slip material and its preparation
Method.
Background technology
Automotive trim foot pad be integrate water suction, dust suction, decontamination, sound insulation, the one of the big major function of protected host blanket five
Plant environmentally friendly vehicle interior trim parts.Automotive trim foot pad belongs to upholstery product, the cleaning outside car in protection car, plays attractive in appearance relaxing
The suitable effect interspersed.
When existing automotive trim foot pad is layered on in-car, easily because the inertia of sole causes automotive trim foot pad to produce sliding
And the phenomenon stacking, thus automotive trim foot pad is led to hinder the sky that clutch pedal, brake pedal and accelerator pedal move downward
Between, easily cause traffic accident.Therefore, it is necessary to provide a kind of automotive trim foot pad, to solve the above problems.
In addition, existing foot pad material, it is primarily present following defect:
The water absorbing capacity of artificial leather foot pad is poor, and what rainy day was messy get on the bus it is easy to shoes;And and cosmetic issue phase
The inside of leather shoe-pad is dirtier, and the leather foot pad of the overwhelming majority is all shaped with foamed plastic on the market, does not defend very much for ratio
Raw.Also has a kind of foot pad of PVC material, the raw material being adopted uses environmentally harmful partial material, and meanwhile, processing technology is not
Environmental protection, working (machining) efficiency is low, and production cost is high.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of automotive trim foot pad, to solve existing automotive trim foot pad
When being layered on in-car, easily because the inertia of sole causes automotive trim foot pad to produce the problem of sliding the phenomenon stacking.Meanwhile, originally
Invention additionally provides a kind of automotive trim foot pad anti-slip material and preparation method thereof, the manufacture method of automotive trim foot pad.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
A kind of automotive trim foot pad, including:Nonwoven layer, the foaming layer located at described nonwoven layer lower surface, located at described
The skid resistant course of alveolar layer lower surface and the wearing layer located at described nonwoven layer upper surface;Described nonwoven layer is provided with groove,
Described wearing layer is in described groove;Described skid resistant course lower surface indentation;Described nonwoven layer, described foaming layer and
The area equation of described skid resistant course;The area of described wearing layer is less than the area of described nonwoven layer;Described wearing layer is located at vapour
The lower section of the clutch pedal of car, brake pedal and accelerator pedal;Described wearing layer upper surface is apart from described nonwoven layer upper surface
Distance be 2 cm ~ 5cm.
Described wearing layer is rubber layer.
Automotive trim foot pad anti-slip material, calculates in parts by weight, by 40 parts of PVC, 0.5 part of coupling agent, 5 parts hard
Resin acid, 5 parts of improved silica powder, 3 parts of compound stabilizers, 6 parts of precipitated calcium carbonates, 0.5 part of PE wax, 1 part of AC foaming agent and
0.5 part of black false hellebore Malin's alkali is made.
The preparation method of automotive trim foot pad anti-slip material, step is as follows:
1)The modification of silica:
In container, spent glycol is diluted to 5% weak solution to the silane coupler weighing 5% silica weight, then by dioxy
SiClx is poured slowly in weak solution, stirring while adding, after mixing, container is placed directly in baking oven and dries at 100 DEG C
To remove solvent, then solid is taken out, grind and obtain improved silica powder;
2)The preparation of PVC pre-feed:
By coupling agent, stearic acid, improved silica powder, compound stabilizer, precipitated calcium carbonate, PE wax, AC foaming agent and lamb's-quarters
Lu Malin alkali adds to container, under magnetic agitation, adds PVC, 30min is so as to fully dispersed for stirring, obtains final product PVC pre-feed;
3)Shaping:
PVC pre-feed is filled with mould, is warming up to 210 DEG C and keeps 5min, natural cooling, take out and obtain final product automotive trim foot pad
Use anti-slip material.
The manufacture method of automotive trim foot pad, comprises the steps:
1. nonwoven layer and foaming layer are prepared according to common process, then by adhesive, both are gluing compound;
2. prepare skid resistant course, then using adhesive, skid resistant course is compounded in the bottom of foaming layer;
3. offer a groove above nonwoven layer, then wearing layer is compounded in the recessed of nonwoven layer using adhesive
In groove;
4. the foot pad after shaping is placed in post processing in baking box, temperature is 55 DEG C, the time is 1h.
Advantage for present invention with effect is:
1), a kind of automotive trim foot pad, including:Nonwoven layer, the foaming layer located at described nonwoven layer lower surface, located at described
The skid resistant course of foaming layer lower surface and the wearing layer located at described nonwoven layer upper surface;Described nonwoven layer is provided with recessed
Groove, described wearing layer is in described groove;Described skid resistant course lower surface indentation;Described nonwoven layer, described foaming layer
And the area equation of described skid resistant course;The area of described wearing layer is less than the area of described nonwoven layer;Described wearing layer position
Lower section in the clutch pedal, brake pedal and accelerator pedal of automobile;Described wearing layer upper surface is in described nonwoven layer
The distance on surface is 2 cm ~ 5cm;By arranging jagged skid resistant course in bottom, step in the clutch of the corresponding automobile in upper surface
The lower section setting groove of plate, brake pedal and accelerator pedal, and wearing layer is set in groove, it is prevented effectively from automotive trim foot pad
When being layered on in-car, because the inertia of sole causes automotive trim foot pad to produce sliding the phenomenon that stacks, simultaneously for clutch pedal, stop
Car pedal and accelerator pedal reserve the space moving downward, and improve the security of driving.
2), skid resistant course made using automotive trim foot pad material, this automotive trim foot pad material, good using PVC material
Thermal insulation and water proofing property, employ improved silica simultaneously so that preparation automotive trim foot pad material there is saving
The advantages of production cost, production efficiency height, environmental protection.
3), the manufacture method of automotive trim foot pad, processing technology is simple, employs the raw material of multiple specially treateds, only logical
Cross the foot pad that simple composite can produce the advantages of high thermal insulation, high water proofing property, environmental protection, low production cost, working (machining) efficiency
High.
Brief description
The invention will be further described below in conjunction with the accompanying drawings:
Fig. 1 is the cross-sectional view of the automotive trim foot pad of the present invention;
Fig. 2 is the schematic top plan view of the automotive trim foot pad of the present invention.
In figure:Nonwoven layer 1, foaming layer 2, skid resistant course 3, wearing layer 11, groove 10, clutch pedal 4, brake pedal 5, plus
Speed pedal 6.
Specific embodiment
Embodiment 1
As shown in Figure 1 to Figure 2, the present invention provides a kind of automotive trim foot pad, including:Nonwoven layer 1, under nonwoven layer 1
The foaming layer 2 on surface, the skid resistant course 3 located at foaming layer 2 lower surface and the wearing layer 11 located at nonwoven layer 1 upper surface.Its
In, the area equation of nonwoven layer 1, foaming layer 2 and skid resistant course 3.Skid resistant course 3 lower surface indentation, increased in automobile
Frictional force between decorations foot pad and automotive floor panel, makes automotive trim foot pad be difficult sliding forward and produces stacking phenomenon.
Further, nonwoven layer 1 is provided with groove 10, and wearing layer 11 is in groove 10.The area of wearing layer 11 is less than
The area of nonwoven layer 1;Wearing layer 11 is located at the lower section of the clutch pedal 4, brake pedal 5 and accelerator pedal 6 of automobile;Wearing layer
The distance apart from nonwoven layer 1 upper surface for 11 upper surfaces is 2 cm ~ 5cm, and in the present embodiment, wearing layer 11 upper surface distance is no
The distance spinning layer of cloth 1 upper surface is 5 cm.Wearing layer 11 is rubber layer.Wearing layer 11 upper surface is apart from nonwoven layer 1 upper surface
Space can reserve, for clutch pedal 4, brake pedal 5 and accelerator pedal 6, the space moving downward, largely reduce conjunction
Pedal 4, brake pedal 5 and the stuck situation of accelerator pedal 6 occur, and effectively improve the security of driving.
From above technical scheme, the automotive trim foot pad of the present invention, by arranging jagged skid resistant course in bottom
3, in the lower section setting groove 10 of the clutch pedal 4, brake pedal 5 and accelerator pedal 6 of the corresponding automobile in upper surface, and in groove 10
Interior setting wearing layer 11, when being prevented effectively from automotive trim foot pad and being layered on in-car, because the inertia of sole causes automotive trim foot pad to produce
Raw sliding the phenomenon stacking, reserve, for clutch pedal 4, brake pedal 5 and accelerator pedal 6, the space moving downward simultaneously, carry
Rise the security of driving.
Embodiment 2
Automotive trim foot pad anti-slip material, calculates in parts by weight, by 40 parts of PVC, 0.5 part of coupling agent, 5 parts of tristearin
Acid, 5 parts of improved silica powder, 3 parts of compound stabilizers, 6 parts of precipitated calcium carbonates, 0.5 part of PE wax, 1 part of AC foaming agent and 0.5
Part black false hellebore Malin's alkali is made.
The preparation method of automotive trim foot pad anti-slip material, step is as follows:
1)The modification of silica:
In container, spent glycol is diluted to 5% weak solution to the silane coupler weighing 5% silica weight, then by dioxy
SiClx is poured slowly in weak solution, stirring while adding, after mixing, container is placed directly in baking oven and dries at 100 DEG C
To remove solvent, then solid is taken out, grind and obtain improved silica powder;
2)The preparation of PVC pre-feed:
By coupling agent, stearic acid, improved silica powder, compound stabilizer, precipitated calcium carbonate, PE wax, AC foaming agent and lamb's-quarters
Lu Malin alkali adds to container, under magnetic agitation, adds PVC, 30min is so as to fully dispersed for stirring, obtains final product PVC pre-feed;
3)Shaping:
PVC pre-feed is filled with mould, is warming up to 210 DEG C and keeps 5min, natural cooling, take out and obtain final product automotive trim foot pad
Use anti-slip material.
Embodiment 3
The manufacture method of automotive trim foot pad, comprises the steps:
1. nonwoven layer and foaming layer are prepared according to common process, then by adhesive, both are gluing compound;
2. prepare skid resistant course, then using adhesive, skid resistant course is compounded in the bottom of foaming layer;
3. offer a groove above nonwoven layer, then wearing layer is compounded in the recessed of nonwoven layer using adhesive
In groove;
4. the foot pad after shaping is placed in post processing in baking box, temperature is 55 DEG C, the time is 1h.
The present invention is not limited to above-described embodiment, and embodiment is exemplary it is intended to be used for explaining the present invention, and can not
It is interpreted as limitation of the present invention.
Claims (2)
1. a kind of automotive trim foot pad anti-slip material it is characterised in that:Calculate in parts by weight, by 40 parts of PVC, 0.5 part
Coupling agent, 5 parts of stearic acid, 5 parts of improved silica powder, 3 parts of compound stabilizers, 6 parts of precipitated calcium carbonates, 0.5 part of PE wax,
1 part of AC foaming agent and 0.5 part of black false hellebore Malin's alkali are made.
2. a kind of method preparing automotive trim foot pad anti-slip material as claimed in claim 1 it is characterised in that:Step is such as
Under:
1)The modification of silica:
In container, spent glycol is diluted to 5% weak solution to the silane coupler weighing 5% silica weight, then by dioxy
SiClx is poured slowly in weak solution, stirring while adding, after mixing, container is placed directly in baking oven and dries at 100 DEG C
To remove solvent, then solid is taken out, grind and obtain improved silica powder;
2)The preparation of PVC pre-feed:
By coupling agent, stearic acid, improved silica powder, compound stabilizer, precipitated calcium carbonate, PE wax, AC foaming agent and lamb's-quarters
Lu Malin alkali adds to container, under magnetic agitation, adds PVC, 30min is so as to fully dispersed for stirring, obtains final product PVC pre-feed;
3)Shaping:
PVC pre-feed is filled with mould, is warming up to 210 DEG C and keeps 5min, natural cooling, take out and obtain final product automotive trim foot pad
Use anti-slip material.
Priority Applications (1)
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CN201610777609.9A CN106379012A (en) | 2016-08-31 | 2016-08-31 | Anti-slip material used for automobile interior foot pad and preparation method thereof |
Applications Claiming Priority (1)
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CN201610777609.9A CN106379012A (en) | 2016-08-31 | 2016-08-31 | Anti-slip material used for automobile interior foot pad and preparation method thereof |
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CN106379012A true CN106379012A (en) | 2017-02-08 |
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ID=57938485
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CN201610777609.9A Pending CN106379012A (en) | 2016-08-31 | 2016-08-31 | Anti-slip material used for automobile interior foot pad and preparation method thereof |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN108047592A (en) * | 2017-12-04 | 2018-05-18 | 安徽精致汽车饰件有限公司 | A kind of automobile flame-proof Slippery proof foot pad |
CN109233475A (en) * | 2018-08-10 | 2019-01-18 | 重庆迈通充磁机电设备有限责任公司 | A kind of automobile brake pedal anti-slip material and its preparation process |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN108047592A (en) * | 2017-12-04 | 2018-05-18 | 安徽精致汽车饰件有限公司 | A kind of automobile flame-proof Slippery proof foot pad |
CN109233475A (en) * | 2018-08-10 | 2019-01-18 | 重庆迈通充磁机电设备有限责任公司 | A kind of automobile brake pedal anti-slip material and its preparation process |
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