CN103753891A - Automobile interior trim part and forming process for same - Google Patents
Automobile interior trim part and forming process for same Download PDFInfo
- Publication number
- CN103753891A CN103753891A CN201310755098.7A CN201310755098A CN103753891A CN 103753891 A CN103753891 A CN 103753891A CN 201310755098 A CN201310755098 A CN 201310755098A CN 103753891 A CN103753891 A CN 103753891A
- Authority
- CN
- China
- Prior art keywords
- pressurize
- automotive upholstery
- layer
- knitted fabric
- foamed cotton
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Laminated Bodies (AREA)
Abstract
The invention provides an automobile interior trim part and a forming process for the same. The automobile interior trim part sequentially consists of a composite knitted fabric layer, a fiberglass mat, a PU (polyurethane) foam sheet, the fiberglass mat and a PET (polyethylene terephthalate) material layer from top to bottom. The automobile interior trim part and the forming process for the same have the advantages and positive effects that the cost is lowered, the production efficiency is improved, and the occurrence rate of quality problems is lowered; sound insulation and noise reduction effects can be achieved, and the NVH (noise vibration and harshness) performance of a product assembly can be improved; energy is saved, and the consumption is reduced.
Description
Technical field
The invention belongs to auto parts machinery technical field, relate in particular to a kind of automotive upholstery and moulding process thereof.
Background technology
Along with the development of automobile industry, car load NVH performance day is more concerned, also more and more higher to the NVH performance requirement of auto parts and components.Roof of the vehicle is important sound-absorbing member, plays Main Function in car load; Roof of the vehicle moulding process now mainly contains two kinds of moulding process, and one is dry process for forming, is called again the cold mold forming mode of heat material, and this molding mode is mainly the heating of PU composite plate, and sheet material temperature is 180 ℃ of left and right, with the compression molding in mould of product fabric;
The 2nd, wet therapy forming process, wet therapy forming process is divided into again Wet One-step moulding process and wet method two-step method moulding process, wet therapy forming process, claims again cold burden hot-die molding mode, and wet method two-step method is mainly first moulding base material, as depicted in figs. 1 and 2, wherein to require be 120 ℃-140 ℃ to mold temperature, after glue spraying on base material again, again in hot-die, carry out fabric bonding, realize half-finished making, wherein mold temperature requirement is 100 ℃-110 ℃; Wet One-step is one-step shaping, as shown in Figure 3, raw material and fabric are superimposed together simultaneously, pressurize moulding in hot-die, wherein requiring temperature is 150 ℃, a pressurize molding semi product for guaranteeing product appearance quality, can increase by three layers of glued membrane of one deck during technological forming in fabric and glass mat.
Because the NVH performance of ceiling moulding wet therapy forming process and the performance such as high temperature resistant are all better than dry process for forming, wet therapy forming process is later stage main flow direction; Wet method two-step method moulding process demand mould two covers, require mould must have good uniformity, and are had relatively high expectations in composite die die cavity gap, are prone to because die cavity gap changes and occur the problem of coming unglued; The difficulty that repairs a die, is difficult to guarantee the matching of two molds easily cause product appearance bad; Wet One-step mould is a set of mould of use compared with two-step method moulding process advantage, for guaranteeing the presentation quality of product, increase by three layers of adhesive film material, mold temperature is had relatively high expectations, mold temperature is lower than PE fusing point (mold temperature demand >=150 ℃), and require fabric to have good heat conductivility, easily cause product precoat and three layers of adhesive film to occur the problem of coming unglued, affect the quality of product; Three layers of glued membrane and knit fabric are Split type structure, easily in stack operation and mold process, because the design of product profile and other reasons cause three layers of glued membrane out-of-flatness, occur stack, lack the problem that material etc. affects product appearance quality.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of automotive upholstery and moulding process thereof, this technique requires lower to mold temperature and fabric performance, and avoid holding and being forbidden to cause the bad problem of product to occur because of control point, be particularly useful for automotive upholstery ceiling and sunshading board moulding process.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of automotive upholstery, is composited by compound knitted fabric layer, glass mat, PET material layer.
Preferably, described compound knitted fabric layer is comprised of looped fabric, PU foamed cotton layer and PA film.
Preferably, described compound knitted fabric layer is composited by glue or flame technique by looped fabric, PU foamed cotton layer and PA film.
Preferably, by compound knitted fabric layer, glass mat, PU cystosepiment, glass mat, PET material layer, formed successively from top to bottom.
Existing Wet One-step moulding process mostly is and prevents strike-through and occur that surface is bad, between the existing compound knitted fabric of the superiors' material and its subsurface material glass mat, increase by three layers of glued membrane, it is PE+PA+PE layer, and the present invention cancels the nonwoven that knit fabric bottom plays the effect of resistance glue, change three layers of film structure, three layers of glued membrane are changed to individual layer PA film, by compound knitted fabric directly and PA film carry out compoundly, molding structure is more existing changes.
PU in PU foamed cotton layer and PU cystosepiment refers to polyurethane; But the density of PU foamed cotton layer and PU cystosepiment is different, the density of foam is 22kg/m
3, and the density of cystosepiment is 26-30kg/m
3, both calculation big powers power and elongation at break are also different, and density is larger, product ultimate strength is larger, PET in the less PET material layer of elongation at break refers to PETG, is commonly called as polyester resin, and it is the condensation polymer of terephthalic acid (TPA) and ethylene glycol; PA film refers to polyamide, is commonly called as nylon, and the PA film in the present invention is to be composited by nylon 6 and nylon 66; PE+PA+PE layer refers to polyethylene+nylon+polyethylene layer.
The present invention also provides a kind of technique of producing automotive upholstery as above, comprises following procedure of processing:
(1), described PU cystosepiment is carried out to top and bottom gluing through roller glue machine, then carry out PU cystosepiment and spray water, wherein the mass ratio of glue and water is 2:1～1:1;
(2), the PU cystosepiment of PET material layer, glass mat, double spread, glass mat and compound knitted fabric layer are superposeed from the bottom to top successively, after having superposeed, deliver in die cavity;
(3), cold burden hot-die is compressing, wherein the temperature of mould is 120oC～140oC, carries out pressurize, dwell pressure is 10MPa-15MPa, in pressure maintaining period, interval exhaust, after moulding pressurize, 4～6s carries out pressure release, after pressure release completes, again carry out pressurize, pressurize is spaced apart after 12～18s, again carries out exhaust pressure relief, after completing, pressure release again after pressurize 15～25s, completes the half-finished making of automotive upholstery;
(4), automotive upholstery semi-finished product are cut, bound edge, check.
Preferably, the production technology of described compound knitted fabric layer is by foamed cotton layer in the middle of burning, and looped fabric and PA film is bonded to respectively to the two sides of centre foamed cotton layer.
Preferably, the uniform gluing water respectively in the top and bottom of middle foamed cotton layer, at lower 120oC～140oC, the two sides of foamed cotton layer in the middle of looped fabric and PA film are bonded to respectively, namely bonds at the temperature that glue bonds being applicable to.。
Preferably, in step (3), cold burden hot-die is compressing, wherein the temperature of mould is 120oC～140oC, carries out pressurize, and dwell pressure is 100T～120T, in pressure maintaining period, interval exhaust, after moulding pressurize, 5s carries out pressure release, after pressure release completes, again carry out pressurize, pressurize is spaced apart after 15s, again carries out exhaust pressure relief, after completing, pressure release again after pressurize 20s, completes the half-finished making of automotive upholstery;
Existing wet therapy forming process needs mold temperature higher, the impact of limited three layers of glued membrane fusing point, and mold temperature must be higher than 150oC, and the present invention only needs mold temperature to meet glue reaction temperature.Existing moulding process is for guaranteeing that three layers of glued membrane melt completely, and evacuation time and pressurize are longer interval time.
Advantage and good effect that the invention has are:
1), cost, the technique effect that the present invention reaches is better than prior art, and saves the cost of two-layer PE on fabric bottom nonwoven and three layers of glued membrane;
2), production efficiency improves, compound knitted fabric Ceng You producer directly carries out that flame is compound or glue is compound, without repeating stack;
3), because PA film has good tensile property, in process, can not cause occurring fold problem, quality problems incidence reduces;
4), the introduction of PA film, can play the effect of sound insulation and noise reduction, improve the NVH performance of product assembly;
5), energy-saving and cost-reducing, existing one step processing technique is higher to mold temperature demand, must guarantee that raw material temperature surpasses the fusing point of PE in three layers of glued membrane, general mold temperature is greater than 150oC, this scheme only need meet the reaction temperature of roller glue glue.
Accompanying drawing explanation
Fig. 1 is existing wet method two-step method moulding matrix structure schematic diagram;
Fig. 2 is existing wet method two-step method fabric composite molding structural representation;
Fig. 3 is the material structure schematic diagram of existing Wet One-step moulding;
Fig. 4 is the structural representation of the material of wet moulding in the present invention;
Fig. 5 is the structural representation of compound knitted fabric in the present invention;
In figure: 1, PET material layer; 2, glass mat; 3, PU cystosepiment; 4, moulding base material; 5, adhesive; 6, existing compound knitted fabric layer; 7, PE+PA+PE layer; 8, looped fabric; 9, PU foamed cotton layer; 10, PA film; 11, compound knitted fabric layer.
The specific embodiment
Embodiment mono-
An automotive upholstery, is comprised of compound knitted fabric layer, glass mat, PU cystosepiment, glass mat, PET material layer from top to bottom successively.
Produce a technique for automotive upholstery as above, comprise following procedure of processing:
(1), described PU cystosepiment is carried out to top and bottom gluing through roller glue machine, then carry out PU cystosepiment and spray water, wherein the ratio of glue and water is 2:1;
(2), the PU cystosepiment of PET material layer, glass mat, double spread, glass mat and compound knitted fabric layer are superposeed from the bottom to top successively, after having superposeed, deliver in die cavity;
(3), cold burden hot-die is compressing, wherein the temperature of mould is 140oC, carries out pressurize, dwell pressure is 10MPa-15MPa, in pressure maintaining period, interval exhaust, after moulding pressurize, 6s carries out pressure release, after pressure release completes, again carry out pressurize, pressurize is spaced apart after 18s, again carries out exhaust pressure relief, after completing, pressure release again after pressurize 25s, completes the half-finished making of automotive upholstery;
(4), automotive upholstery semi-finished product are cut, bound edge, check.
Wherein, the production technology of described compound knitted fabric layer is by foamed cotton layer in the middle of burning, and looped fabric and PA film is bonded to respectively to the two sides of centre foamed cotton layer.
Embodiment bis-
An automotive upholstery, is comprised of compound knitted fabric layer, glass mat, PU cystosepiment, glass mat, PET material layer from top to bottom successively.
Produce a technique for automotive upholstery as above, comprise following procedure of processing:
(1), described PU cystosepiment is carried out to top and bottom gluing through roller glue machine, then carry out PU cystosepiment and spray water, wherein the ratio of glue and water is 1.5:1;
(2), the PU cystosepiment of PET material layer, glass mat, double spread, glass mat and compound knitted fabric layer are superposeed from the bottom to top successively, after having superposeed, deliver in die cavity;
(3), cold burden hot-die is compressing, wherein the temperature of mould is 130oC, carries out pressurize, dwell pressure is 10MPa-15MPa, in pressure maintaining period, interval exhaust, after moulding pressurize, 5s carries out pressure release, after pressure release completes, again carry out pressurize, pressurize is spaced apart after 15s, again carries out exhaust pressure relief, after completing, pressure release again after pressurize 20s, completes the half-finished making of automotive upholstery;
(4), automotive upholstery semi-finished product are cut, bound edge, check.
Wherein, the production technology of described compound knitted fabric layer is at the top and bottom of middle foamed cotton layer difference uniform gluing water, the two sides of foamed cotton layer in the middle of looped fabric and PA film being bonded to respectively under preference temperature, the different temperatures of glue is different, generally at 80 ℃ of left and right temperature, completes compound.
Embodiment tri-
An automotive upholstery, is comprised of compound knitted fabric layer, glass mat, PU cystosepiment, glass mat, PET material layer from top to bottom successively.
Produce a technique for automotive upholstery as above, comprise following procedure of processing:
(1), described PU cystosepiment is carried out to top and bottom gluing through roller glue machine, then carry out PU cystosepiment and spray water, wherein the ratio of glue and water is 1:1;
(2), the PU cystosepiment of PET material layer, glass mat, double spread, glass mat and compound knitted fabric layer are superposeed from the bottom to top successively, after having superposeed, deliver in die cavity;
(3), cold burden hot-die is compressing, wherein the temperature of mould is 120oC, carries out pressurize, dwell pressure is 10MPa-15MPa, in pressure maintaining period, interval exhaust, after moulding pressurize, 4s carries out pressure release, after pressure release completes, again carry out pressurize, pressurize is spaced apart after 12s, again carries out exhaust pressure relief, after completing, pressure release again after pressurize 20s, completes the half-finished making of automotive upholstery;
(4), automotive upholstery semi-finished product are cut, bound edge, check.
The production technology of described compound knitted fabric layer is by foamed cotton layer in the middle of burning, and looped fabric and PA film is bonded to respectively to the two sides of centre foamed cotton layer.
Above the embodiment of the invention is had been described in detail, but described content is only the preferred embodiments of the invention, can not be considered to for limiting practical range of the present invention.All equalization variations of doing according to the invention scope and improvement etc., within all should still belonging to this patent covering scope.
Claims (8)
1. an automotive upholstery, is characterized in that: by compound knitted fabric layer, glass mat, PET material layer, be composited.
2. automotive upholstery as claimed in claim 1, is characterized in that: described compound knitted fabric layer is comprised of looped fabric, PU foamed cotton layer and PA film.
3. automotive upholstery as claimed in claim 2, is characterized in that: described compound knitted fabric layer is composited by glue or flame technique by looped fabric, PU foamed cotton layer and PA film.
4. the automotive upholstery as described in claim 1,2 or 3 any one, is characterized in that: compound knitted fabric layer, glass mat, PU cystosepiment, glass mat, PET material layer, consist of successively from top to bottom.
5. a technique for the automotive upholstery of production as described in claim 1～4 any one, is characterized in that: comprise following procedure of processing:
(1), described PU cystosepiment is carried out to top and bottom gluing through roller glue machine, then carry out PU cystosepiment and spray water, wherein the mass ratio of glue and water is 2:1～1:1;
(2), the PU cystosepiment of PET material layer, glass mat, double spread, glass mat and compound knitted fabric layer are superposeed from the bottom to top successively, after having superposeed, deliver in die cavity;
(3), cold burden hot-die is compressing, wherein the temperature of mould is 120oC～140oC, carries out pressurize, dwell pressure is 10MPa-15MPa, in pressure maintaining period, interval exhaust, after moulding pressurize, 4～6s carries out pressure release, after pressure release completes, again carry out pressurize, pressurize is spaced apart after 12～18s, again carries out exhaust pressure relief, after completing, pressure release again after pressurize 15～25s, completes the half-finished making of automotive upholstery;
(4), automotive upholstery semi-finished product are cut, bound edge, check.
6. the technique of production automotive upholstery as claimed in claim 5, is characterized in that: the production technology of described compound knitted fabric layer is by foamed cotton layer in the middle of burning, and looped fabric and PA film is bonded to respectively to the two sides of centre foamed cotton layer.
7. the technique of production automotive upholstery as claimed in claim 5, is characterized in that: the uniform gluing water respectively in the top and bottom of middle foamed cotton layer, at lower 120oC～140oC, is bonded to looped fabric and PA film respectively the two sides of centre foamed cotton layer.
8. the technique of the production automotive upholstery as described in claim 4～7 any one, it is characterized in that: in step (3), cold burden hot-die is compressing, wherein the temperature of mould is 120oC～140oC, carry out pressurize, dwell pressure is 10MPa-15MPa, in pressure maintaining period, interval exhaust, after moulding pressurize, 5s carries out pressure release, after pressure release completes, again carry out pressurize, pressurize is spaced apart after 15s, again carries out exhaust pressure relief, after completing, pressure release again after pressurize 20s, completes the half-finished making of automotive upholstery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310755098.7A CN103753891B (en) | 2013-12-30 | 2013-12-30 | Automobile interior trim part and forming process for same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310755098.7A CN103753891B (en) | 2013-12-30 | 2013-12-30 | Automobile interior trim part and forming process for same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103753891A true CN103753891A (en) | 2014-04-30 |
| CN103753891B CN103753891B (en) | 2015-05-27 |
Family
ID=50521284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310755098.7A Active CN103753891B (en) | 2013-12-30 | 2013-12-30 | Automobile interior trim part and forming process for same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103753891B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104002533A (en) * | 2014-05-30 | 2014-08-27 | 天津博信汽车零部件有限公司 | Car interior fabric as well as preparation process and BOPP (bi-axially oriented polypropylene) adhesive film coating device |
| CN104210562A (en) * | 2014-08-22 | 2014-12-17 | 无锡吉兴汽车声学部件科技有限公司 | Production process of automobile bamboo plywood floor |
| CN104309546A (en) * | 2014-10-08 | 2015-01-28 | 安徽省地坤汽车天窗科技有限公司 | Novel car sunroof ceiling cotton |
| CN105398184A (en) * | 2015-10-26 | 2016-03-16 | 烟台正海合泰科技股份有限公司 | Production method of flexible PU skylight sun shield |
| CN105479914A (en) * | 2015-12-28 | 2016-04-13 | 武汉泰宇汽车零部件有限公司 | Preparation method of fabric type engine hood cover |
| CN106113650A (en) * | 2016-08-27 | 2016-11-16 | 费孝锋 | A kind of automobile inner decoration facing |
| CN106182946A (en) * | 2016-08-27 | 2016-12-07 | 费孝锋 | A kind of fabric of automobile decoration |
| CN106346937A (en) * | 2016-08-24 | 2017-01-25 | 烟台正海合泰科技股份有限公司 | Production method of wet-process automotive interior ceiling |
| CN108501408A (en) * | 2018-04-10 | 2018-09-07 | 安庆永大体育文化有限公司 | The processing method of TPU musculus cutaneus on a kind of surfboard moulded board |
| WO2021042917A1 (en) * | 2019-09-06 | 2021-03-11 | Wuxi Gissing Auto Acoustic Parts Tech. Co., Ltd. | Vehicle interior part and heated mould compression forming process thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202805842U (en) * | 2012-06-29 | 2013-03-20 | 长城汽车股份有限公司 | Automobile internal decorative head cover |
| CN103434253A (en) * | 2013-08-22 | 2013-12-11 | 烟台正海汽车内饰件有限公司 | Production method of low-gram-weight high-intensity automobile inner trim ceiling |
-
2013
- 2013-12-30 CN CN201310755098.7A patent/CN103753891B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202805842U (en) * | 2012-06-29 | 2013-03-20 | 长城汽车股份有限公司 | Automobile internal decorative head cover |
| CN103434253A (en) * | 2013-08-22 | 2013-12-11 | 烟台正海汽车内饰件有限公司 | Production method of low-gram-weight high-intensity automobile inner trim ceiling |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104002533A (en) * | 2014-05-30 | 2014-08-27 | 天津博信汽车零部件有限公司 | Car interior fabric as well as preparation process and BOPP (bi-axially oriented polypropylene) adhesive film coating device |
| CN104210562A (en) * | 2014-08-22 | 2014-12-17 | 无锡吉兴汽车声学部件科技有限公司 | Production process of automobile bamboo plywood floor |
| CN104210562B (en) * | 2014-08-22 | 2016-07-06 | 无锡吉兴汽车声学部件科技有限公司 | The production technology on automobile bamboo slab rubber floor |
| CN104309546A (en) * | 2014-10-08 | 2015-01-28 | 安徽省地坤汽车天窗科技有限公司 | Novel car sunroof ceiling cotton |
| CN105398184A (en) * | 2015-10-26 | 2016-03-16 | 烟台正海合泰科技股份有限公司 | Production method of flexible PU skylight sun shield |
| CN105479914A (en) * | 2015-12-28 | 2016-04-13 | 武汉泰宇汽车零部件有限公司 | Preparation method of fabric type engine hood cover |
| CN105479914B (en) * | 2015-12-28 | 2018-06-26 | 武汉泰宇汽车零部件有限公司 | A kind of textile type engine bonnet preparation method |
| CN106346937A (en) * | 2016-08-24 | 2017-01-25 | 烟台正海合泰科技股份有限公司 | Production method of wet-process automotive interior ceiling |
| CN106113650A (en) * | 2016-08-27 | 2016-11-16 | 费孝锋 | A kind of automobile inner decoration facing |
| CN106182946A (en) * | 2016-08-27 | 2016-12-07 | 费孝锋 | A kind of fabric of automobile decoration |
| CN108501408A (en) * | 2018-04-10 | 2018-09-07 | 安庆永大体育文化有限公司 | The processing method of TPU musculus cutaneus on a kind of surfboard moulded board |
| WO2021042917A1 (en) * | 2019-09-06 | 2021-03-11 | Wuxi Gissing Auto Acoustic Parts Tech. Co., Ltd. | Vehicle interior part and heated mould compression forming process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103753891B (en) | 2015-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103753891B (en) | Automobile interior trim part and forming process for same | |
| JP5947868B2 (en) | Lightweight multilayer composite substrate and method for producing the same | |
| CN101961996B (en) | Method for producing automotive rear shelf | |
| US20230234344A1 (en) | Vehicle interior part and heated mould compression forming process thereof | |
| CN105034531A (en) | Production technology of car carpets | |
| CN111204294A (en) | Integrally formed automobile EPP ceiling and preparation method thereof | |
| CN109501406B (en) | Automobile ceiling polyurethane composite board, preparation method thereof and automobile | |
| CN102145552A (en) | Thermoplastic bamboo fiber composite board and manufacturing method thereof | |
| KR102108905B1 (en) | Composite materials for interior parts of vehicle, and manufacturing method for the same | |
| CN111572107A (en) | Automobile roof material and preparation method thereof | |
| CN101337526A (en) | Wet process technique of PU flexible foam top-liner | |
| CN102001318B (en) | Method for manufacturing automobile headliner by using natural fiber material as main material | |
| CN105835483A (en) | Manufacture method of high-intensity and lightweight paper honeycomb composite board for vehicles | |
| CN102019701A (en) | Production technique of automobile trunk | |
| CN105235118A (en) | Production method used for processing automobile interior ceilings via cold mold method | |
| JP4734478B2 (en) | Paper base composite material | |
| CN210881220U (en) | Reinforcing frame for automobile roof skylight | |
| CN102794853A (en) | Method for manufacturing thermoplastic reconstituted-cotton sound-insulation pad by high-temperature steam | |
| CN104476851B (en) | A kind of BGP panel interior decoration part and preparation method thereof | |
| CN205239381U (en) | High performance vehicle decorative plate | |
| CN202608901U (en) | Car roof panel available for medium-sized or large-sized passenger car | |
| CN106114388A (en) | Lightweight high-mechanic vehicular coat and hat rack plate and the technique manufacturing vehicular coat and hat rack thereof | |
| CN104085138B (en) | Composite board and its preparation method and application | |
| CN218804455U (en) | Bio-based completely degradable composite board | |
| KR101417440B1 (en) | Garnish for interial parts of automobile and manufacturing method of the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211109 Address after: 071000 No. 2266 Chaoyang South Street, Hebei, Baoding Patentee after: GREAT WALL MOTOR Co.,Ltd. Address before: 300462 No. 99, South Street, West District, Binhai New Area Development Zone, Tianjin Patentee before: TIANJIN BOXIN AUTOMOBILE PARTS Co.,Ltd. |