CN104842890A - Spare tire cover plate for vehicle and manufacturing method thereof - Google Patents
Spare tire cover plate for vehicle and manufacturing method thereof Download PDFInfo
- Publication number
- CN104842890A CN104842890A CN201510246085.6A CN201510246085A CN104842890A CN 104842890 A CN104842890 A CN 104842890A CN 201510246085 A CN201510246085 A CN 201510246085A CN 104842890 A CN104842890 A CN 104842890A
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- China
- Prior art keywords
- cover plate
- cavity
- vehicle
- skin covering
- spare tyre
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/01—Liners for load platforms or load compartments
- B60R13/011—Liners for load platforms or load compartments for internal load compartments, e.g. car trunks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a spare tire cover plate for a vehicle and a manufacturing method thereof. The spare tire cover plate for the vehicle comprises a coat layer with a cavity therein and a foam layer filled in the cavity, wherein the coat layer is formed by ethylene-vinyl acetate copolymer modified toughening polylactic acid, and the foam layer is formed through foaming polyvinyl alcohol solution. The spare tire cover plate for the vehicle is excellent in heat stability, low in dead weight and excellent in intensity and impact resistance. Because the spare tire cover plate for the vehicle uses degradable environment-friendly material, the spare tire cover plate for the vehicle conforms to a higher environmental protection standard.
Description
Technical field
The present invention relates to vehicle spare tyre cover plate and manufacture method thereof, belong to vehicle interior part manufacturing technology field.
Background technology
Cover plate of spare tire of automobile is installed in boot, for separating tyre-well and baggage container, can cover spare tyre and driver's tool, carries article in baggage container simultaneously.
The injection molding plates of existing spare tire cover plate many employings polypropylene (Polypropylene, PP) material or bending block etc., but its resistance to heat is poor, can cause spare tire cover plate generation deformation under high temperature, affects product size.For improving resistance to effect of heat, also have spare tire cover plate to adopt PP wood flour board material, but the intensity of PP wood flour board and Dent resistance poor, easily cause rupturing, the generation of Fragmentation Phenomena, be difficult to meet the demand of carrying compared with heavy articles; And containing more volatile organic compound (volatile organiccompounds, VOC) in PP wood flour board, do not meet environmental demands.In addition, also have Some vehicles to adopt hardboard as spare tire cover plate, but its density is comparatively large, and the deadweight of spare tire cover plate is increased.
Summary of the invention
The invention provides a kind of vehicle spare tyre cover plate and manufacture method thereof, have excellent heat stability and higher intensity and impact resistance concurrently, conduct oneself with dignity less simultaneously, and meet environmental demands.
The invention provides a kind of vehicle spare tyre cover plate, comprise the inner skin covering of the surface forming cavity, and the foaming layer be filled in described skin covering of the surface cavity, wherein said skin covering of the surface is adopt ethylene-vinyl acetate copolymer modified plasticizing polylactic acid to be formed, and described foaming layer is foamed by polyvinyl alcohol water solution and formed.
Further, in described plasticizing polylactic acid, the mass ratio of ethylene-vinyl acetate copolymer and poly(lactic acid) is 0.5-1.
Further, described skin layer thickness is 0.8-1.5mm, and described depth of foam is 2-4mm.
Further, the mass concentration of described polyvinyl alcohol water solution is 40-60%.
The present invention also provides a kind of method manufacturing above-mentioned vehicle spare tyre cover plate, comprising:
Ethylene-vinyl acetate copolymer and polylactic acid blend are extruded, forms the inner skin covering of the surface with cavity;
In cavity polyvinyl alcohol water solution being injected described skin covering of the surface and pressurize, obtain described vehicle spare tyre cover plate.
Further, described method is carried out at the temperature of 150-230 DEG C.
Further, injected by polyvinyl alcohol water solution in the cavity of described skin covering of the surface, injection pressure is 0.7-1.1MPa, and pressurize 8-15s.
Further, described skin covering of the surface is formed by the method for gas assisted molding.
Vehicle spare tyre cover plate excellent heat stability provided by the invention, can keep good dimensional stability under the state that vehicle interior temperature is higher, and deadweight is lower, simultaneously the good mechanical properties of its intensity and Dent resistance.In addition, owing to employing degradable environment-friendly material, vehicle spare tyre cover plate of the present invention is made to meet higher environmental protection standard.
Accompanying drawing explanation
Fig. 1 is the section drawing of vehicle spare tyre cover plate provided by the invention.
Fig. 2 is the diagram of circuit manufacturing vehicle spare tyre cover plate method provided by the invention.
Description of reference numerals
1-skin covering of the surface
2-foaming layer
Detailed description of the invention
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the section drawing of vehicle spare tyre cover plate provided by the invention.As shown in Figure 1, described vehicle spare tyre cover plate comprises the inner skin covering of the surface 1 forming cavity, and the foaming layer 2 be filled in described skin covering of the surface 1 cavity, wherein said skin covering of the surface 1 is adopt ethylene-vinyl acetate copolymer modified plasticizing polylactic acid to be formed, and described foaming layer 2 is foamed by polyvinyl alcohol water solution and formed.
Wherein, poly(lactic acid) is a kind of bio-based High molecular material, abundant raw material source and renewable, and its goods degradable is a kind of environment-friendly type macromolecule material.Initiative of the present invention poly(lactic acid) is used on spare tire cover plate, compared with traditional PP or PP wood flour board spare tire cover plate, not only resistance to effect of heat and mechanical property (intensity and Dent resistance etc.) improve, simultaneously also a kind of environmentally friendly machine, to human body without any toxicity.In addition, spare tire cover plate provided by the invention also adopts the method for inner filling-foam layer, can be good at transferring heat, makes spare tire cover plate at high temperature also can keep its shape well, reduces product weight simultaneously, be more conducive to the manufacturing of light-type vehicle.
For meeting the strength demand of vehicle spare tyre cover plate better, the higher ethylene-vinyl acetate copolymer modified plasticizing polylactic acid of working strength of the present invention is as skin covering of the surface 1.Wherein, the mass ratio of ethylene-vinyl acetate copolymer and poly(lactic acid) is 0.5-1.
For obtaining better foaming effect, the mass concentration of polyvinyl alcohol water solution can be 40-60%, is beneficial to and in foaming process, generates size uniform and abscess in closure state.
Vehicle spare tyre cover plate provided by the invention, thickness can adjust according to actual needs, and the thickness of usual skin covering of the surface 1 can be 0.8-1.5mm, and the thickness of foaming layer 2 can be 2-4mm, can meet the load-bearing demand of general vehicle.
As shown in Figure 2, manufacture above-mentioned vehicle spare tyre cover plate and can adopt following method:
101, ethylene-vinyl acetate copolymer and polylactic acid blend are extruded, forms the inner skin covering of the surface 1 with cavity;
102, in cavity polyvinyl alcohol water solution being injected skin covering of the surface and pressurize, obtain vehicle spare tyre cover plate.
Above-mentioned manufacture method can be carried out usually at the temperature of 150-230 DEG C, is conducive to the extrusion molding of plasticizing polylactic acid, and is conducive to the foaming of polyvinyl alcohol water solution at this temperature.
In step 101, skin covering of the surface 1 is formed by the method for gas assisted molding.
In step 102, the injection pressure adopted time in cavity polyvinyl alcohol water solution being injected skin covering of the surface can be 0.7-1.1MPa, and pressurize 8-15s, is more conducive to polyvinyl alcohol water solution uniform filling in the cavity of skin covering of the surface 1, and is formed evenly and the bubble closed.
Illustrate the manufacture method of vehicle spare tyre cover plate provided by the invention by the following examples.
Under the processing temperature of 150-230 DEG C, by poly(lactic acid) with EVA is blended adds single screw extrusion machine, wherein the mass ratio of EVA and poly(lactic acid) is 0.5-1, and screw speed is 80-200rpm, be injected in mold cavity in the mode of gas assisted molding, shaped inner has the skin covering of the surface 1 of cavity structure.
The aqueous system of polyvinyl alcohol is injected in the cavity of skin covering of the surface 1, the mass concentration of this aqueous system can be 40-60% usually, under the pressure condition of 0.7-1.1MPa, be injected in the cavity of skin covering of the surface 1, and pressurize 8-15s, polyvinyl alcohol water solution foams under the action of heat and pressure, and cavity filling, after having foamed, the vehicle spare tyre cover plate cooling 15-30s usually will obtained, the demoulding, obtains finished product.
The vehicle spare tyre cover plate that the present embodiment method manufactures, performance is as shown in table 1:
Table 1
From the data in table 1, above-mentioned vehicle spare tyre cover plate has excellent mechanical property and resistance to effect of heat, can meet the load-bearing of general vehicle and resistance to heat demand, and density is much smaller than the spare tire cover plate of PP material, and deadweight is comparatively light, is more suitable for light-type vehicle.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (8)
1. a vehicle spare tyre cover plate, it is characterized in that, comprise the inner skin covering of the surface forming cavity, and be filled in the foaming layer in described cavity, wherein said skin covering of the surface adopts ethylene-vinyl acetate copolymer modified plasticizing polylactic acid to be formed, and described foaming layer is foamed by polyvinyl alcohol water solution and formed.
2. vehicle spare tyre cover plate according to claim 1, is characterized in that, in described plasticizing polylactic acid, the mass ratio of ethylene-vinyl acetate copolymer and poly(lactic acid) is 0.5-1.
3. vehicle spare tyre cover plate according to claim 1, is characterized in that, described skin layer thickness is 0.8-1.5mm, and described depth of foam is 2-4mm.
4. vehicle spare tyre cover plate according to claim 1, is characterized in that, the mass concentration of described polyvinyl alcohol water solution is 40-60%.
5. a method for the vehicle spare tyre cover plate described in any one of manufacturing claims 1-4, is characterized in that, comprising:
Ethylene-vinyl acetate copolymer and polylactic acid blend are extruded, forms the inner skin covering of the surface with cavity;
In cavity polyvinyl alcohol water solution being injected described skin covering of the surface and pressurize, obtain described vehicle spare tyre cover plate.
6. method according to claim 5, is characterized in that, the inner skin covering of the surface with cavity of described formation carries out at the temperature of 150-230 DEG C.
7. method according to claim 5, is characterized in that, is injected by polyvinyl alcohol water solution in the cavity of described skin covering of the surface, and injection pressure is 0.7-1.1MPa, and pressurize 8-15s.
8. the method according to any one of claim 5-7, is characterized in that, described skin covering of the surface is formed by the method for gas assisted molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510246085.6A CN104842890A (en) | 2015-05-14 | 2015-05-14 | Spare tire cover plate for vehicle and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510246085.6A CN104842890A (en) | 2015-05-14 | 2015-05-14 | Spare tire cover plate for vehicle and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN104842890A true CN104842890A (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510246085.6A Pending CN104842890A (en) | 2015-05-14 | 2015-05-14 | Spare tire cover plate for vehicle and manufacturing method thereof |
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| Country | Link |
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| CN (1) | CN104842890A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106004704A (en) * | 2016-08-08 | 2016-10-12 | 北京长安汽车工程技术研究有限责任公司 | Automobile trunk pad |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2745799Y (en) * | 2004-06-22 | 2005-12-14 | 上海华特汽车配件有限公司 | Composite floor pad for vehicle |
| CN201224359Y (en) * | 2008-05-14 | 2009-04-22 | 江阴延利汽车饰件有限公司 | Decorative board inside cover of sedan boot |
| US20120068493A1 (en) * | 2010-09-22 | 2012-03-22 | Bruce Waterman | Truck bed liner |
| CN103625384A (en) * | 2013-11-29 | 2014-03-12 | 长城汽车股份有限公司 | Vehicle spare tire cover plate and method for manufacturing vehicle spare tire cover plate |
| CN104002879A (en) * | 2014-05-27 | 2014-08-27 | 长城汽车股份有限公司 | Automobile spare tire cover plate and processing process and processing device thereof |
| CN203996013U (en) * | 2014-07-23 | 2014-12-10 | 温州市环球汽车衬垫有限公司 | Cover plates of automobile luggage compartment |
| CN104364300A (en) * | 2012-09-21 | 2015-02-18 | 乐金华奥斯株式会社 | Bioresin-added interior sheet for vehicles and method for manufacturing same |
-
2015
- 2015-05-14 CN CN201510246085.6A patent/CN104842890A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2745799Y (en) * | 2004-06-22 | 2005-12-14 | 上海华特汽车配件有限公司 | Composite floor pad for vehicle |
| CN201224359Y (en) * | 2008-05-14 | 2009-04-22 | 江阴延利汽车饰件有限公司 | Decorative board inside cover of sedan boot |
| US20120068493A1 (en) * | 2010-09-22 | 2012-03-22 | Bruce Waterman | Truck bed liner |
| CN104364300A (en) * | 2012-09-21 | 2015-02-18 | 乐金华奥斯株式会社 | Bioresin-added interior sheet for vehicles and method for manufacturing same |
| CN103625384A (en) * | 2013-11-29 | 2014-03-12 | 长城汽车股份有限公司 | Vehicle spare tire cover plate and method for manufacturing vehicle spare tire cover plate |
| CN104002879A (en) * | 2014-05-27 | 2014-08-27 | 长城汽车股份有限公司 | Automobile spare tire cover plate and processing process and processing device thereof |
| CN203996013U (en) * | 2014-07-23 | 2014-12-10 | 温州市环球汽车衬垫有限公司 | Cover plates of automobile luggage compartment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106004704A (en) * | 2016-08-08 | 2016-10-12 | 北京长安汽车工程技术研究有限责任公司 | Automobile trunk pad |
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Application publication date: 20150819 |
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