CN110696321A - High-brightness black decoration strip and integrated extrusion production process thereof - Google Patents
High-brightness black decoration strip and integrated extrusion production process thereof Download PDFInfo
- Publication number
- CN110696321A CN110696321A CN201910899026.7A CN201910899026A CN110696321A CN 110696321 A CN110696321 A CN 110696321A CN 201910899026 A CN201910899026 A CN 201910899026A CN 110696321 A CN110696321 A CN 110696321A
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- China
- Prior art keywords
- black
- highlight
- brightness
- framework
- clamping
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Classifications
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- 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
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
- B29C48/155—Partial coating thereof
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/79—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling of preformed parts or layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
- B29K2705/08—Transition metals
- B29K2705/12—Iron
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3002—Superstructures characterized by combining metal and plastics, i.e. hybrid parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3005—Body finishings
- B29L2031/302—Trim strips
Abstract
The invention firstly provides a highlight black decorative strip which comprises a highlight black framework, wherein the highlight black framework comprises a highlight strip section and a clamping section, and the clamping section is positioned at the left end and the right end of the highlight strip section. The upper end and the lower end of the high-brightness black framework are provided with clamping hook feet in a bending mode towards the same side face, and sealing rubber materials wrap the inside of the high-brightness black framework and the outer surfaces of the clamping hook feet. The invention also relates to an integrated extrusion production process of the high-brightness black and bright decorative strip, which comprises the following process steps: rolling, gluing, drying, composite extrusion, cooling and post-treatment. In the drying step after the glue coating, the temperature of the drying device is kept between 160 ℃ and 200 ℃, the time is controlled between 5s and 10s, and the problem that the surface of the high-brightness black steel is fogged and whitened during drying can be effectively avoided.
Description
Technical Field
The invention relates to the field of automobile accessories and the field of automobile accessory processing, in particular to a high-brightness black decorating strip and an integrated extrusion production process of the high-brightness black decorating strip.
Background
The automobile decoration strip is a decoration accessory widely applied to various automobiles, and can be used for decorating the positions of windows, door frames, automobile bumpers, chassis edges and the like of the automobiles. Generally, the automobile decoration strip can be directly clamped into an automobile sheet metal at a decoration part to be fixed. The automobile decoration strip has the functions of decoration, water resistance, noise prevention and the like, and not only improves the appearance attractiveness of an automobile, but also improves the comfort level of passengers.
In the current automobile development, the appearance requirement of an automobile owner on the automobile is gradually improved, the automobile owner further requires the bright decorative strip to embody a metal luster, and therefore the requirements of the automobile owner on the glossiness, the color and the color uniformity of materials for the bright decorative strip of the automobile are improved. Among them, steel materials having a highly bright black surface have been paid attention to in the field of automobile trim strips as a new material. The surface of the high-brightness black steel is uniform in color and luster, and high in surface glossiness, the surface of the high-brightness black steel shows the characteristics of smoothness and brightness under the condition of light irradiation, and the appearance attractiveness of a vehicle can be effectively improved.
In order to enable the automobile bright decorative strip to have the functions of water resistance and noise prevention, a layer of sealing glue material is covered outside the automobile bright decorative strip. In the existing production process of the bright decorative strip of the automobile, the sealing rubber material and the framework of the bright decorative strip are often extruded and molded by an extruder in an integrated composite extrusion process. In the process, in order to ensure that the sealing rubber material and the framework have good connection sealing performance, a layer of glue is coated on the outer surface of the framework before extrusion, and the glue is dried once after being coated, so that the adhesion performance of the glue is improved. In the extrusion process, the glue can tightly stick the framework and the sealing glue material, so that the automobile decorative strip has better waterproof performance and noise-proof performance.
In the traditional process, because the framework is usually made of stainless steel and the surface of the framework is usually white or bright silver, the color of the bright decoration part exposed outside the framework is not changed greatly in the drying process, and the framework only needs to be dried roughly. However, after the high-brightness black steel is adopted, the high-brightness black is mainly produced by brushing high-brightness black paint or pasting a high-brightness black film in a composite mode, the high-brightness black is made of materials such as printing ink, polycarbonate and carbon black, and the materials are easy to decompose after being exposed at high temperature for a long time, so that the surface of the high-brightness black steel can be fogged and whitened after being dried at high temperature or after being dried for a long time according to the self-property of the high-brightness black steel, the appearance characteristics of the high-brightness black steel are lost, and the high-brightness black steel is difficult to apply to the field of automobile decorative strips. Although the method of avoiding the loss of the appearance characteristic of the highlight black steel by not covering the sealing rubber material and then omitting the drying step is adopted, the method loses the function of the automobile decorative strip; there is also a solution to recoating the bright decorative part of the automobile trim strip directly after finishing the processing to cover the whitish part, but this obviously increases the processing procedure, and may make the surface color of the automobile trim strip uneven, which affects the aesthetic degree.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the traditional common stainless steel bright decoration strip is difficult to meet the aesthetic requirements of diversity of people. Meanwhile, in the processing technology of the high-brightness black and bright decorative strip, if the temperature and the time are improperly controlled in the drying step after coating, the surface of the high-brightness black steel material is whitened, and the appearance attractiveness of the high-brightness black steel material is influenced.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the invention firstly provides a high-brightness black decorative strip which at least comprises a high-brightness black framework, wherein the high-brightness black framework is made of high-brightness black steel materials; the high-brightness black framework comprises a bright decoration strip section and clamping sections fixedly arranged on the left side and the right side of the bright decoration strip section, and clamping devices are fixedly arranged on the clamping sections; the high-brightness black framework comprises an outer side surface and an inner side surface, and clamping hook legs are bent towards the inner side surface at the edges of the upper end and the lower end of the high-brightness black framework; and sealing rubber materials are fixedly arranged on the inner side surface and the outer surface of the clamping hook foot.
Preferably, the clamping device comprises a connecting plate and a buckle fixedly connected with the connecting plate, and the connecting plate is fixedly connected with the surface of one side of the inner side face corresponding to the clamping section.
Preferably, the surface of the bright decoration strip section corresponding to one side of the inner side surface is fixedly provided with an adhesive piece.
Preferably, the part of the sealing rubber material at the end part of the clamping hook foot extends and is bent to form an attaching lip edge.
The invention also provides an integral extrusion production process for producing the highlight black and bright decorative strip, which is characterized in that a mechanical device used in the processing process at least comprises the following steps: the device comprises a rolling device, a gluing device, a drying device, an extruder and a cooling device; the extruder comprises an extrusion die; the production process comprises the following steps:
s1: rolling, namely conveying the high-brightness black steel to a rolling device, and rolling to form the clamping hook foot;
s2: gluing, namely conveying the high-brightness black framework processed in the step S1 to a coating device, and coating glue on the surfaces of the product corresponding to the clamping hook legs and the inner side surfaces;
s3: drying, namely conveying the high-brightness black framework processed in the step S2 to a drying device, and baking for 5-10S at the temperature of 160-200 ℃;
s4: extruding, namely adding the raw material of the sealing sizing material into the extruder, heating and melting the raw material of the sealing sizing material by the extruder, inputting the raw material of the sealing sizing material into the extrusion port die, simultaneously conveying the high brightness black framework processed in the step S3 into the extrusion port die of the extruder, and integrally compounding and extruding the high brightness black framework and the raw material of the sealing sizing material in a molten state by the extrusion port die to prepare a blank;
s5: and (6) cooling, namely conveying the blank prepared in the step S4 into the cooling device for cooling.
Preferably, the mechanical device used further comprises a sawing device, and after step S5, a sawing step is further included, wherein the sawing step is as follows: and (4) placing the cooled blank into a sawing device, sawing the blank into proper lengths, and punching notches at two ends of the blank.
Preferably, the glue is resin glue.
Preferably, the raw material of the sealing rubber compound is PVC.
Preferably, the cooling device used in step S5 is a water-cooled tank.
Preferably, after step S5, an adhesive is further attached to the blank, and the adhesive is a 3M double-sided tape.
The invention has the advantages that:
1. compared with the traditional stainless steel, the high-brightness black steel has better color and appearance, can effectively improve the appearance of the automobile bright decorative strip, and meets the decoration requirement of an automobile owner;
2. in the drying step, the temperature is controlled to be 160-200 ℃, and the time is controlled to be 5-10 s, so that the problem that the material is decomposed to cause fogging and whitening when the outer surface of the highlight black steel is dried can be avoided, meanwhile, the glue is not dried thoroughly, and the problem that the sealing glue is not tightly connected with the highlight black framework is avoided.
Drawings
FIG. 1 is a schematic view of a preferred embodiment of a highlight black strip;
FIG. 2 is a cross-sectional view of the portion of FIG. 1A;
FIG. 3 is a cross-sectional view of the portion of FIG. 1B;
FIG. 4 is a schematic view of an embodiment of a connection plate;
FIG. 5 is a schematic view of a rolled highlight black skeleton;
FIG. 6 is a schematic view of an extruded blank;
description of reference numerals: 1-highlight black framework, 10-highlight decorative strip section, 101-outer side surface, 103-inner side surface, 11-clamping hook foot, 12-sealing glue stock, 13-bonding piece, 14-attaching lip, 20-clamping section, 21-connecting plate, 22-buckle and 3-sheet metal.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, integrally connected, or detachably connected; may be communication within two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art will understand the specific meaning of the above terms in the present invention in specific situations.
The invention firstly provides a high-brightness black decorative strip, a preferable embodiment of which is shown in fig. 1 to 4, and the high-brightness black decorative strip at least comprises a high-brightness black framework 1, wherein the high-brightness black framework 1 is made of high-brightness black steel materials through rolling treatment and comprises a bright decorative strip section 10 and clamping sections 20 fixedly arranged at the left end and the right end of the bright decorative strip section 10. The highlight black matrix 1 includes an outer side 101 and an inner side 102. The section of the bright decorative strip section 10 is shown in fig. 3, the outer edges of the upper end part and the lower end part of the bright decorative strip section are folded towards one side of the inner side surface 102 to be provided with clamping hook legs 11, and the clamping hook legs 11 can be clamped into the metal plate 3 to play a role in fixing and positioning the bright black decorative strip; a clamping device is arranged on the end face of one side of the clamping section 20 corresponding to the inner side face 102. In order to improve the waterproof performance and the noise-proof performance of the high-brightness black and bright decorative strip, sealing rubber materials 12 are fixedly arranged on the inner side surface 102 of the high-brightness black framework 1 and the surface of the clamping hook foot 11. During installation, the sealing rubber 12 can be in close contact with the automobile sheet metal in a manner shown in fig. 3, so that a sealing effect is achieved, and further, the waterproof and noise-proof functions are achieved. Wherein, the high bright black skeleton 1 of lateral surface 101 position is exposed outside, plays the decoration effect, and its surface gloss is high, and black surface aesthetic property is better.
Preferably, a connecting plate 21 is fixedly bonded to the surface of the portion of the inner side surface 102 located at the clamping section 20, and a buckle 22 is fixedly arranged on the connecting plate 21. During installation, the buckle 22 can provide a positioning effect and can assist in fixing the highlight black decorative strip.
Preferably, the part of the inner side surface 102 corresponding to the bright decoration strip section 10 is fixedly provided with a bonding piece 13, and after the bonding piece 13 is bonded to the metal plate 3, the connection tightness between the bright black decoration strip and the metal plate 3 can be further improved, and the sealing performance is improved.
Preferably, the sealing rubber material 12 arranged on the clamping hook foot 11 extends outwards and is bent towards one side of the inner side surface 102 to form an attaching lip 14, the attaching lip 14 can attach to the sheet metal 3 from the outer side, and the sealing performance of the sealing rubber material 12 is further improved.
The invention also provides an integral extrusion production process of the highlight black decorative strip, and used equipment and steps are shown in figure 5, and used devices at least comprise a rolling device, a gluing device, a drying device, an extruder and a cooling device, wherein the extruder comprises an extrusion die. The processing technology at least comprises the following steps:
firstly, processing the purchased high-brightness black steel into proper thickness, and after rough appearance processing, enabling the width of the steel to meet the design;
step S1: the highlight black steel material is placed into a rolling device, the highlight black steel material is rolled by the rolling device to form the highlight black framework 1 with the clamping hook 11, and the processing result is shown in fig. 5.
Step S2: and (5) putting the highlight black framework 1 manufactured in the step (S1) into a gluing device, and gluing the inner side surface 102 of the highlight black framework 1 and the surface of the clamping hook foot 11.
Step S3: and controlling the temperature in the drying device to be 160-200 ℃, and putting the highlight black framework 1 coated with the glue in the step S2 into the drying device, wherein the drying time is controlled to be 5-10S.
Step S4: taking out the dried highlight black framework 1, and putting the highlight black framework into an extruder; meanwhile, the raw material of the sealing rubber material 12 is supplied to the extruder, and the extruder melts the raw material of the sealing rubber material 12 and then conveys the melted raw material into the extrusion opening die. The extrusion die integrally extrudes and forms the highlight black framework 1 and the sealing rubber material 12 to manufacture a blank of the highlight black decorative strip, and the blank is shown in figure 6. In the extrusion process, the sealing rubber material 12 can be tightly adhered to the high-brightness black framework 1 by glue, so that the sealing rubber material 12 is prevented from falling off. Wherein, the extrusion die is matched with the shape of the blank.
Step S5: and (5) putting the blank manufactured in the step (S4) into a cooling device, and taking out the blank after the sealing rubber compound 12 is cooled.
In the above processing flow, the temperature and the drying time of the drying device in step S3 are strictly controlled, and the drying time is controlled from 5S to 10S at the temperature of 160 ℃ to 200 ℃, so that the problems of decomposition, whitening and loss of glossiness of the high brightness black coating on the surface of the high brightness black steel can be effectively avoided at the temperature and time, the processing problem of the high brightness black bright decorative strip is solved, the steps are simple, no additional processing step is added on the basis of the original processing technology, and the processing cost can be effectively controlled.
If the long high-brightness black steel is used for continuous processing of the production line, the step S5 is followed by a sawing step, the blank is sawn to be a proper length according to actual needs in the sawing step, then notches for placing the connecting plates 21 are punched at two ends, and the connecting plates 21 are inserted into the high-brightness black decorative strips from the punched notches and are bonded.
Preferably, in order to adapt to the drying temperature and time in the invention, the glue is resin glue, and the resin glue can be dried quickly in the environment of 160-200 ℃ without affecting the bonding performance.
Preferably, the sealing rubber material is PVC, and the cooling device selects a water cooling tank. The PVC material can obtain quick complete moulding cooling under the environment of ordinary water-cooling tank, can improve machining efficiency, and water-cooling tank simple structure convenient to use is favorable to saving manufacturing cost simultaneously.
In conclusion, the above description is only for the preferred embodiment of the present invention and should not be construed as limiting the present invention, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The highlight black decorative strip is characterized by at least comprising a highlight black framework (1), wherein the highlight black framework (1) is made of highlight black steel; the high-brightness black framework (1) comprises a bright decoration strip section (10) and clamping sections (20) fixedly arranged on the left side and the right side of the bright decoration strip section (10), and clamping devices are fixedly arranged on the clamping sections (20); the high-brightness black framework (1) comprises an outer side surface (101) and an inner side surface (102), and the edges of the upper end and the lower end of the high-brightness black framework (1) are bent towards the inner side surface and provided with clamping hook feet (11); and sealing rubber materials (12) are fixedly arranged on the inner side surface (102) and the outer surface of the clamping hook foot (11).
2. The highlight black trim strip according to claim 1, characterized in that said clamping means comprises a connecting plate (21) and a clamp (22) fixedly connected to said connecting plate (21), said connecting plate (21) being fixedly connected to a surface of said clamping section (20) on a side corresponding to said inner side surface (102).
3. The highlight black trim strip according to claim 1, characterized in that the portion of the sealing compound (12) at the end of the clamping hook foot (11) extends and is bent to form an abutment lip (14).
4. The highlight black decorative strip according to claim 1, characterized in that an adhesive (13) is fixedly arranged on the surface of the highlight strip section (10) corresponding to one side of the inner side surface (102).
5. An integral extrusion production process for producing the highlight black decorative strip as claimed in any one of claims 1 to 3, characterized in that mechanical devices used in the processing process at least comprise: the device comprises a rolling device, a gluing device, a drying device, an extruder and a cooling device; the extruder comprises an extrusion die;
the production process at least comprises the following steps:
s1: rolling, namely conveying the high-brightness black steel to a rolling device, and rolling to form the clamping hook foot (11);
s2: gluing, namely conveying the high-brightness black framework (1) processed in the step S1 to a coating device, and painting glue on the surfaces of the product corresponding to the clamping hook foot (11) and the inner side surface (102);
s3: drying, namely conveying the high-brightness black framework (1) processed in the step S2 to a drying device, and baking for 5-10S at the temperature of 160-200 ℃;
s4: extruding, namely adding the raw material of the sealing rubber material (12) into the extruder, heating and melting the raw material of the sealing rubber material (12) by the extruder, inputting the raw material into the extrusion port die, simultaneously conveying the highlight black framework (1) processed in the step S3 into the extrusion port die of the extruder, and integrally compounding and extruding the highlight black framework (1) and the raw material of the sealing rubber material (12) in a molten state by the extrusion port die to prepare a blank;
s5: and (6) cooling, namely conveying the blank prepared in the step S4 into the cooling device for cooling.
6. The integral extrusion production process of the high-brightness black and bright decorative strip as claimed in claim 5, wherein the mechanical device further comprises a sawing device, and after step S5, the sawing device further comprises a sawing step, and the sawing step comprises: and (4) placing the cooled blank into a sawing device, sawing the blank into proper lengths, and punching notches at two ends of the blank.
7. The integral extrusion production process of the high-brightness black-and-bright decorative strip as claimed in claim 5, wherein the glue is resin glue.
8. The integrated extrusion production process of the high-brightness black and bright decorative strip as claimed in claim 5, wherein the raw material of the sealing rubber (12) is PVC.
9. The integral extrusion process of high brightness black and bright decoration strip as claimed in claim 5, wherein the cooling device used in step S5 is a water cooling tank.
10. The integral extrusion production process of the high-brightness black and bright decorative strip according to claim 5, wherein an adhesive piece (13) is adhered to the blank after step S5, and the adhesive piece (13) is a 3M double-sided adhesive tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910899026.7A CN110696321A (en) | 2019-09-23 | 2019-09-23 | High-brightness black decoration strip and integrated extrusion production process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910899026.7A CN110696321A (en) | 2019-09-23 | 2019-09-23 | High-brightness black decoration strip and integrated extrusion production process thereof |
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| Publication Number | Publication Date |
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| CN110696321A true CN110696321A (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910899026.7A Pending CN110696321A (en) | 2019-09-23 | 2019-09-23 | High-brightness black decoration strip and integrated extrusion production process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114536710A (en) * | 2022-01-10 | 2022-05-27 | 广州东海敏孚汽车部件有限公司 | Processing technology of sliding rail decorative strip |
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| CN204701431U (en) * | 2015-06-01 | 2015-10-14 | 江阴海达橡塑股份有限公司 | Outer water cut of automobile sealing band |
| CN106457977A (en) * | 2014-12-18 | 2017-02-22 | 法国圣戈班玻璃厂 | Polymer disc having an extruded-on seal profile |
| CN107856516A (en) * | 2017-09-15 | 2018-03-30 | 宁波敏实汽车零部件技术研发有限公司 | One kind welds bright face sealing strip and its manufacture method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7744988B2 (en) * | 2001-07-24 | 2010-06-29 | Cooper-Standard Automotive Inc. | Composites containing crosslinkable thermoplastic and TPV show layer |
| CN204095477U (en) * | 2014-09-04 | 2015-01-14 | 北京汽车股份有限公司 | A kind of outer water cuts structure and vehicle |
| CN106457977A (en) * | 2014-12-18 | 2017-02-22 | 法国圣戈班玻璃厂 | Polymer disc having an extruded-on seal profile |
| CN204701431U (en) * | 2015-06-01 | 2015-10-14 | 江阴海达橡塑股份有限公司 | Outer water cut of automobile sealing band |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114536710A (en) * | 2022-01-10 | 2022-05-27 | 广州东海敏孚汽车部件有限公司 | Processing technology of sliding rail decorative strip |
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