CN111037947A - Method for processing visual natural fiber interior trim part of automobile - Google Patents
Method for processing visual natural fiber interior trim part of automobile Download PDFInfo
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- CN111037947A CN111037947A CN201911093321.XA CN201911093321A CN111037947A CN 111037947 A CN111037947 A CN 111037947A CN 201911093321 A CN201911093321 A CN 201911093321A CN 111037947 A CN111037947 A CN 111037947A
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- China
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- polymer material
- interior trim
- trim part
- natural fiber
- pressing plate
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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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
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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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
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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
- B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a processing method of a visual natural fiber interior trim part of an automobile, which comprises the steps of 1, preparing an interior trim part substrate with a visual natural fiber surface layer and 2, wherein the interior trim part substrate is molded into the interior trim part, and the inner surface of a mold molding cavity is a smooth surface without appearance textures during the molding; the preparation method of the interior trim part substrate comprises the following steps: covering a second high polymer material which is the same as or compatible with the first high polymer material on the surface of the first high polymer material containing natural fibers, pressurizing and heating through a heating press, and arranging spacing blocks for maintaining the spacing between an upper heating pressing plate and a lower heating pressing plate of the heating press and positioned at the periphery of the first high polymer material and the second high polymer material during pressurizing and heating. The interior trim part prepared by the method directly takes the natural fiber texture as the appearance, does not need coverings such as skins and fabrics, has less materials and light weight, and accords with the concept of environmental protection.
Description
Technical Field
The invention relates to a processing method of an automotive interior trim part, in particular to a processing method of an automotive visual natural fiber interior trim part.
Background
The dead weight of the automobile has great influence on the energy consumption of the automobile, and various schemes for reducing the weight of the whole automobile are searched. The production of the automotive interior trim part by compression molding of the composite material containing the natural fiber is a better lightweight process, but the product molded by the composite material containing the natural fiber has poor surface quality, the surface of the product is not protected and is easily corroded by illumination, scraping and chemical reagents, so that the surface appearance cannot be durably existed and is not suitable for being directly used as an appearance part; if the surface of the composite material product containing natural fibers is coated with fabrics, leather and the like, the cost of parts is greatly increased, and the weight reduction effect is influenced.
Chinese patent publication No. CN104276105 discloses an interior trim part of a vehicle and a processing process thereof, the interior trim part is made of a first material containing natural fibers, a mold with a pattern is coated with a second material which is the same as or compatible with the first material, the second material and the first material are hot-pressed by the mold, and finally, a texture containing the pattern is directly formed on the surface of the first material. The processing technology of the interior trim part of the vehicle adopts natural fiber to directly manufacture the leather pattern appearance part, and the used mould is a hot-pressing mould with leather patterns, so that the processed part product has simple and reliable structure, low cost, less material consumption, light weight and beautiful appearance. The process can play a role in reducing weight, but patterns are required to be arranged on the die so as to form corresponding textures on the surface of a finished product to improve the aesthetic degree.
Disclosure of Invention
The invention aims to provide a processing method of a visual natural fiber interior trim part of an automobile, which meets the requirement of light weight, directly takes the texture of natural fibers as the appearance of the interior trim part, improves the surface quality and overcomes the defects in the prior art.
The technical scheme of the invention is as follows: a processing method of an automobile visual natural fiber interior trim part comprises the steps of 1, preparing an interior trim part substrate with a visual natural fiber surface layer and 2, wherein the automobile visual natural fiber interior trim part is manufactured by the interior trim part substrate through compression molding, and the inner surface of a mold forming cavity is a smooth surface without appearance textures during compression molding; the method for preparing the interior trim part substrate with the visual natural fiber surface layer comprises the following steps: in a contact heating press, covering a second high polymer material which is the same as or compatible with a first high polymer material on the surface of the first high polymer material containing natural fibers, pressurizing and heating the first high polymer material and the second high polymer material through the heating press, and arranging a limiting block for maintaining the distance between an upper heating pressing plate and a lower heating pressing plate between the upper heating pressing plate and the lower heating pressing plate of the heating press and positioned at the periphery of the first high polymer material and the second high polymer material during pressurizing and heating.
According to the processing method, the second high polymer material and the first high polymer material are mutually permeated, the spacing between the upper heating pressing plate and the lower heating pressing plate is limited by the limiting block, and when the upper heating pressing plate is pressed downwards, certain concave deformation is generated to enable the texture of the natural fiber to be presented on the surface of the second high polymer material but not to be directly exposed on the surface of the material, so that the surface quality of the substrate is improved, and the method can be directly used for preparing the interior trim part with the fiber texture appearance in a mould pressing mould without the texture.
Further, in order to ensure that the natural fiber texture mixed with the first polymer material can be presented on the surface of the second polymer material without being directly exposed, so that the basic surface texture is clear, the surface density of the first polymer material containing the natural fiber is 1400g/m2～2000g/m2And the height of the limiting block is 4-8 mm.
Further, the method for preparing the interior trim part substrate with the visual natural fiber surface layer comprises the following steps:
101, placing the first polymer material containing the natural fibers on the lower heating pressing plate, and placing the limiting block on the lower heating pressing plate around the periphery of the first polymer material containing the natural fibers;
102, paving the second high polymer material on the surface of the first high polymer material;
and 103, heating by the lower heating pressing plate and the upper heating pressing plate, pressing the upper heating pressing plate to the lower heating pressing plate and contacting the limiting block, and enabling the second high polymer material to mutually permeate with the surface of the first high polymer material in a molten state.
Further, the method comprises a step 104 of lifting the upper heating pressing plate after the step 103, then pressing the upper heating pressing plate to the lower heating pressing plate again and contacting the limiting block, wherein the temperature of the lower heating pressing plate and the upper heating pressing plate is 180-200 ℃ when the lower heating pressing plate and the upper heating pressing plate are heated, the upper heating pressing plate is kept for 15-25 s after contacting the limiting block in the step 103, the upper heating pressing plate is kept for 5-10 s when the upper heating pressing plate is lifted, and the upper heating pressing plate is kept for 15-25 s when the upper heating pressing plate is pressed to the lower heating pressing plate again and contacting the limiting block.
Further, the natural fiber is hemp fiber or bamboo fiber or a mixture of hemp fiber and bamboo fiber.
Further, the first polymer material and the second polymer material are plastic fiber materials or polypropylene materials.
Further, when the visual natural fiber interior trim part of the automobile is manufactured by compression molding of the interior trim part substrate, one surface of the interior trim part substrate, which presents the natural fiber texture, faces to a cavity surface of a female die of a molding die.
The visual natural fiber interior trim part comprises a first polymer material layer containing natural fibers and a texture layer, wherein the texture layer is formed on the surface of the first polymer material layer, is formed by mutually permeating the first polymer material layer and the second polymer material layer and presents the texture of the natural fibers.
The technical scheme provided by the invention has the advantages that:
the natural fiber texture is directly used as the appearance, and the used mould pressing mould is a smooth mould without the texture, so that the processed part product has a simple and reliable structure, the manufacturing cost of the mould pressing mould is low, the cost of the whole interior trim part product is low, the used materials are few, the weight is particularly light, the natural fiber texture is directly used as the appearance, and covers such as a skin, a fabric and the like are not needed, so that the green environmental protection concept is met.
Drawings
Fig. 1 is a schematic illustration of a substrate pressing of an interior trim component with a visible natural fiber skin.
Fig. 2 is a schematic view of the die pressing of a visual natural fiber interior trim part of an automobile.
Fig. 3 is a surface photograph of a first polymer material containing natural fibers.
Fig. 4 is a photograph of a surface of an interior trim substrate with a visible natural fiber skin.
Detailed Description
The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention thereto.
Referring to fig. 1, a method for processing a visual natural fiber interior trim part for an automobile includes a step 1 of preparing an interior trim part substrate having a visual natural fiber surface layer and a step 2 of manufacturing the visual natural fiber interior trim part for the automobile by compression molding the interior trim part substrate, as shown in fig. 2, the visual natural fiber interior trim part for the automobile includes a first polymer material 1 layer (fig. 3) containing natural fibers and a texture layer 3 which is formed on the surface of the first polymer material 1 layer and is penetrated by the first polymer material 1 layer and the second polymer material 2 layer and presents natural fiber textures.
The method of making the trim substrate with a visible natural fiber skin is such that: in a contact heating press, the surface of a first polymer material 1 containing natural fibers is coated with a second polymer material 2 which is the same as or compatible with the first polymer material 1, and then heated and pressed. The first polymer material 1 containing natural fibers is generally a plastic fiber material, a polypropylene material or a film material, and the second polymer material 2 is the same as or compatible with the first polymer material 1, so that the two materials can mutually permeate after being heated and melted. The natural fiber in the first polymer material 1 can be one fiber or any combination of a plurality of fibers extracted from natural organic matters such as hemp fiber, bamboo fiber and the like, the impurity content of the natural fiber is less than 3%, and the adding proportion is 50-60% by mass fraction. The first polymer material 1 containing natural fibers meets certain rigidity requirements according to light weight requirements and part requirements, and the surface density of the first polymer material is 1400g/m2～2000g/m2。
The method comprises the following specific steps: 101, placing a first polymer material 1 containing natural fibers on a lower heating pressing plate 4, placing a limiting block 5 on the lower heating pressing plate 4 around the first polymer material 1 containing the natural fibers, wherein the height of the limiting block 5 is determined by the surface density of the first polymer material 1 containing the natural fibers and is 4-8 mm; the limiting block 5 enables the upper heating pressing plate 6 and the lower heating pressing plate 4 to keep a proper distance to promote the first polymer material 1 and the second polymer material 2 to permeate and fuse without directly and completely exposing the natural fibers on the surface of the materials;
102, paving a second high polymer material 2 on the surface of the first high polymer material 1;
103, heating the lower heating pressing plate 4 and the upper heating pressing plate 6 to reach the temperature of 180-200 ℃, and the upper heating pressing plate 6 is pressed to the lower heating pressing plate 4 and contacts with the limiting block 5 to keep 15 s-25 s, the upper heating pressing plate 6 is parallel to the lower heating pressing plate 4, but after the limit block 5, the heights of the peripheries of the upper heating pressing plate 6 and the lower heating pressing plate 4 are limited by the limit block 5, but the middle part is affected by the pressure of the press, the heating pressing plate 4 is elastically deformed downwards, the actual gap is smaller than the periphery, so that the material can be permeated in the heating process, the upper heating pressing plate 6 is lifted up to be kept for 5-10 s after the keeping time is over, the water vapor generated by heating the first high polymer material 1 is released, the influence of the water vapor on the appearance is avoided, while the first polymer material 1 is expanded to increase its thickness properly under the continuous heating of the lower heating plate 4. Then, the upper heating platen 6 is pressed to the lower heating platen 4 again and keeps 15-25 s when contacting the limiting block 5, the second polymer material 2 and the surface of the first polymer material 1 mutually permeate in a molten state to complete the manufacture of the interior trim part substrate with the visual natural fiber surface layer, and the surface morphology is shown in fig. 4. The method enables the second high polymer material 2 and the first high polymer material 1 to generate a mutual permeation effect, the spacing between the upper heating pressing plate 6 and the lower heating pressing plate 4 is limited by the limiting block 5, and when the upper heating pressing plate 6 is pressed downwards, certain concave deformation is generated to enable the texture of natural fibers to be presented on the surface of the material but not to be directly exposed on the surface of the material, so that the surface quality of the substrate is improved, and the method can be directly used for preparing the interior trim parts with fiber texture appearances in a mould pressing mould without the texture of patterns.
Subsequently, when the interior trim substrate is molded into the visual natural fiber interior trim of the automobile, the interior trim substrate is heated and placed into a mold pressing die, one surface of the interior trim substrate, which presents natural fiber textures, faces to a cavity surface of a female die 7 of the mold pressing die, and the inner surface of a mold forming cavity is a smooth surface without appearance textures. The visual natural fiber interior trim part of the automobile can be manufactured by pressing the interior trim part by adopting a conventional die pressing process.
Claims (8)
1. A processing method of an automobile visual natural fiber interior trim part is characterized by comprising the steps of 1, preparing an interior trim part substrate with a visual natural fiber surface layer and 2, wherein the automobile visual natural fiber interior trim part is manufactured by the interior trim part substrate through compression molding, and the inner surface of a mold forming cavity is a smooth surface without appearance textures during compression molding; the method for preparing the interior trim part substrate with the visual natural fiber surface layer comprises the following steps: in a contact heating press, covering a second high polymer material which is the same as or compatible with a first high polymer material on the surface of the first high polymer material containing natural fibers, pressurizing and heating the first high polymer material and the second high polymer material through the heating press, and arranging a limiting block for maintaining the distance between an upper heating pressing plate and a lower heating pressing plate between the upper heating pressing plate and the lower heating pressing plate of the heating press and positioned at the periphery of the first high polymer material and the second high polymer material during pressurizing and heating.
2. The method for processing the visual natural fiber interior trim part of the automobile according to claim 1, wherein the first polymer material containing the natural fiber has an areal density of 1400g/m2～2000g/m2And the height of the limiting block is 4-8 mm.
3. The method for manufacturing a visual natural fiber interior trim part of an automobile according to claim 1, wherein the method for manufacturing the interior trim part substrate with the visual natural fiber surface layer comprises the following steps:
101, placing the first polymer material containing the natural fibers on the lower heating pressing plate, and placing the limiting block on the lower heating pressing plate around the periphery of the first polymer material containing the natural fibers;
102, paving the second high polymer material on the surface of the first high polymer material;
and 103, heating by the lower heating pressing plate and the upper heating pressing plate, pressing the upper heating pressing plate to the lower heating pressing plate and contacting the limiting block, and enabling the second high polymer material to mutually permeate with the surface of the first high polymer material in a molten state.
4. The method for manufacturing visual natural fiber interior trim parts of an automobile according to claim 3, wherein the method comprises a step 104 of lifting the upper heating platen after the step 103 and then pressing the upper heating platen again against the lower heating platen and touching the stopper, the temperature of the lower heating platen and the upper heating platen when heated is 180-200 ℃, the temperature of the upper heating platen when touched with the stopper in the step 103 is kept for 15-25 s, the temperature of the upper heating platen when lifted is kept for 5-10 s, and the temperature of the upper heating platen when pressed against the lower heating platen and touching the stopper is kept for 15-25 s.
5. The processing method of the visual natural fiber interior trim part of the automobile according to claim 1, wherein the natural fiber is hemp fiber or bamboo fiber or a mixture of hemp fiber and bamboo fiber.
6. The method for processing the visual natural fiber interior trim part of the automobile according to claim 1, wherein the first polymer material and the second polymer material are plastic fiber materials or polypropylene materials.
7. The processing method of the visual natural fiber interior trim part of the automobile according to claim 1, wherein when the visual natural fiber interior trim part of the automobile is manufactured by compression molding of an interior trim part substrate, one surface of the interior trim part substrate presenting the natural fiber texture is arranged to face a cavity surface of a female die of a molding die.
8. A visual natural fiber interior decoration for an automobile, which is manufactured by the processing method of the visual natural fiber interior decoration for the automobile of any one of claims 1 to 7, and comprises a first polymer material layer containing natural fibers and a texture layer, wherein the texture layer is formed on the surface of the first polymer material layer, and the first polymer material layer and the second polymer material layer mutually penetrate through the texture layer and present the texture of the natural fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911093321.XA CN111037947A (en) | 2019-11-11 | 2019-11-11 | Method for processing visual natural fiber interior trim part of automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911093321.XA CN111037947A (en) | 2019-11-11 | 2019-11-11 | Method for processing visual natural fiber interior trim part of automobile |
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| CN111037947A true CN111037947A (en) | 2020-04-21 |
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| CN201911093321.XA Pending CN111037947A (en) | 2019-11-11 | 2019-11-11 | Method for processing visual natural fiber interior trim part of automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113696601A (en) * | 2020-05-21 | 2021-11-26 | 广东百能家居有限公司 | Hot-charging process for stainless steel plate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501541A (en) * | 2011-10-20 | 2012-06-20 | 潘国立 | Method for manufacturing interior trim panel of automobile door by using polymer-natural fiber composite material |
| CN104276105A (en) * | 2013-07-02 | 2015-01-14 | 上海通用汽车有限公司 | Interior trim part of car and processing technology thereof |
-
2019
- 2019-11-11 CN CN201911093321.XA patent/CN111037947A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501541A (en) * | 2011-10-20 | 2012-06-20 | 潘国立 | Method for manufacturing interior trim panel of automobile door by using polymer-natural fiber composite material |
| CN104276105A (en) * | 2013-07-02 | 2015-01-14 | 上海通用汽车有限公司 | Interior trim part of car and processing technology thereof |
Non-Patent Citations (2)
| Title |
|---|
| 应长春: "《船舶工艺技术》", 31 January 2013, 上海交通大学出版社 * |
| 张广成 等: "《塑料成型加工技术》", 31 January 2016, 西北工业大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113696601A (en) * | 2020-05-21 | 2021-11-26 | 广东百能家居有限公司 | Hot-charging process for stainless steel plate |
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Application publication date: 20200421 |
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