阅读说明：本技术 一种双色与iml工艺结合的汽车内饰零件及其制造方法 (Automobile interior part combining double colors and IML (in-mold labeling) process and manufacturing method thereof ) 是由 谭旭 于 2020-12-09 设计创作，主要内容包括：本发明提供一种双色与IML工艺结合的汽车内饰零件及其制造方法,不但可以产生各种内纹图案,还可以形成立体通透感,形成多元化定位图案的体现；特别是通过对造型及IML膜片花纹的设计,然后采用双色与IML工艺结合的特殊工艺,从而使零件花纹在视觉上产生偏光后的立体感；从而更加丰富了对内饰零件的装饰效果,而这种效果也是水转印、INS、IML、双色注塑等工艺不能实现的。(The invention provides an automotive interior part combining double colors and an IML process and a manufacturing method thereof, which can not only generate various inner pattern patterns, but also form three-dimensional transparent feeling and embody diversified positioning patterns; particularly, through the design of modeling and IML membrane patterns, and then the special process of combining double colors and the IML process is adopted, the part patterns visually generate the stereoscopic impression after polarization; therefore, the decoration effect of the decoration parts is enriched, and the effect cannot be realized by the processes of water transfer printing, INS, IML, double-color injection molding and the like.)

1. A manufacturing method of an automotive interior part combining double colors and an IML process is characterized in that: the method comprises the following specific steps:

step one, forming a designed 3D color model in a cavity of a high-pressure forming die, wherein the high-pressure forming die is used for sucking an IML membrane;

step two, heating the high-pressure forming die in the step one, and then putting the IML membrane into the die so that the IML membrane forms a 3D one-color modeling effect required by design;

step three, forming a punching die by the designed 3D color model and the boundary thereof;

step four, putting the IML film with the 3D color modeling effect formed in the step two into a punching die in the step three to punch off the redundant part;

step five, forming the designed 3D color model in a cavity of a first injection mold, wherein the first injection mold is used for injection molding of a polycarbonate transparent interior part;

sixthly, placing the IML membrane punched in the fourth step into a cavity of a first injection mold, and injecting transparent polycarbonate into the cavity of the first injection mold, so that the IML membrane is attached to one side of the transparent polycarbonate interior part when the transparent polycarbonate interior part is molded;

seventhly, forming the designed 3D one-color and two-color modeling in a cavity of a second injection mold, wherein the second injection mold is used for injection molding of a second interior part;

and step eight, placing the polycarbonate transparent interior part which is attached with the IML membrane after injection molding in the step six into a cavity of a second injection mold, and injecting a second raw material into the cavity of the second injection mold, so that when the second interior part is molded, the polycarbonate transparent interior part and the second interior part are attached together, and the IML membrane is attached between the polycarbonate transparent interior part and the second interior part to form the automotive interior part which combines double colors and the IML process.

2. The manufacturing method of the automotive interior part combining the two-color and the IML process according to claim 1, characterized in that: and step two, further comprising cutting the IML film which is formed with the 3D color modeling effect.

3. The manufacturing method of the automotive interior part combining the two-color and the IML process according to claim 1, characterized in that: and in the fourth step, performing dust removal, grease removal and impurity removal treatment on the punched IML membrane.

4. The manufacturing method of the automotive interior part combining the two-color and the IML process according to claim 1, characterized in that: and sixthly, the transparent polycarbonate raw material is dried in an oven for 3 to 5 hours at the temperature of between 100 and 120 ℃ in advance.

5. The manufacturing method of the automotive interior part combining the two-color and the IML process according to claim 1, characterized in that: and step eight, the second raw material is dried in an oven for 3 to 5 hours at the temperature of between 100 and 120 ℃ in advance.

6. The manufacturing method of the automotive interior part combining the two-color and the IML process according to claim 1, characterized in that: and step eight, the second raw material is a mixture of a terpolymer of acrylonitrile, butadiene and styrene and polycarbonate.

7. An automotive interior part which is manufactured by the method for manufacturing an automotive interior part which combines the two-color and IML processes according to any one of claims 1 to 6.

8. The bi-color and IML process combined automotive interior part of claim 7, wherein: the IML film is attached between the polycarbonate transparent interior part and the second interior part and is not in direct contact with the outside.

Technical Field

The invention relates to an automotive interior part and a decoration process thereof, in particular to an automotive interior part combining double colors and an IML process and a manufacturing method thereof.

Background

IML (in moving Label) Chinese name: the technology of in-mold insert injection molding is very remarkable in that: the surface is a layer of hardened transparent film, the middle is a printing pattern layer, and the back is a plastic layer. But the pure IML process has a poor interior decoration effect.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides an automotive interior part combining double colors and an IML process and a manufacturing method thereof, which can not only generate various inner pattern patterns, but also form a three-dimensional transparent feeling and embody diversified positioning patterns. Particularly, through the design of the modeling and the IML film pattern, and then the special process of combining the bicolor process and the IML process is adopted, the part pattern generates the stereoscopic impression after polarization in vision. Therefore, the decoration effect of the decoration parts is enriched, and the effect cannot be realized by the processes of water transfer printing, INS, IML, double-color injection molding and the like.

The technical scheme of the invention is as follows: a manufacturing method of an automotive interior part combining double colors and an IML process comprises the following specific steps:

step one, forming a designed 3D color model in a cavity of a high-pressure forming die, wherein the high-pressure forming die is used for sucking an IML membrane;

step two, heating the high-pressure forming die in the step one, and then putting the IML membrane into the die so that the IML membrane forms a 3D one-color modeling effect required by design;

step three, forming a punching die by the designed 3D color model and the boundary thereof;

step four, putting the IML film with the 3D color modeling effect formed in the step two into a punching die in the step three to punch off the redundant part;

step five, forming the designed 3D color model in a cavity of a first injection mold, wherein the first injection mold is used for injection molding of a polycarbonate transparent interior part;

sixthly, placing the IML membrane punched in the fourth step into a cavity of a first injection mold, and injecting transparent polycarbonate into the cavity of the first injection mold, so that the IML membrane is attached to one side of the transparent polycarbonate interior part when the transparent polycarbonate interior part is molded;

seventhly, forming the designed 3D one-color and two-color modeling in a cavity of a second injection mold, wherein the second injection mold is used for injection molding of a second interior part;

and step eight, placing the polycarbonate transparent interior part which is attached with the IML membrane after injection molding in the step six into a cavity of a second injection mold, and injecting a second raw material into the cavity of the second injection mold, so that when the second interior part is molded, the polycarbonate transparent interior part and the second interior part are attached together, and the IML membrane is attached between the polycarbonate transparent interior part and the second interior part to form the automotive interior part which combines double colors and the IML process.

Further, in the second step, the method further comprises the step of cutting the IML film which is formed with the 3D color modeling effect.

And further, in the fourth step, dust removal, grease removal and impurity removal treatment are carried out on the punched IML membrane.

Further, the transparent polycarbonate raw material in the sixth step needs to be baked in an oven at 100-120 ℃ for 3-5 hours in advance. Removing water from the raw material.

And further, in the step eight, the second raw material needs to be dried in an oven at 100-120 ℃ for 3-5 hours in advance. Removing water from the raw material.

Further, in the eighth step, the second raw material is a mixture of a terpolymer of three monomers of acrylonitrile, butadiene and styrene and polycarbonate.

The invention also provides the automobile interior part which is manufactured by the manufacturing method of the automobile interior part combining the double-color technology and the IML technology and combines the double-color technology and the IML technology.

Further, the IML film is attached between the polycarbonate transparent interior part and the second interior part and is not in direct contact with the outside. So as to ensure the wear resistance and the scratch resistance required by the patterns of the interior trim parts.

The invention has the beneficial effects that: the automobile interior part combining the bicolor technology and the IML technology and the manufacturing method thereof are provided, not only various inner pattern patterns can be generated, but also the three-dimensional transparent feeling can be formed, and the embodiment of diversified positioning patterns can be formed. Particularly, through the design of the modeling and the IML film pattern, and then the special process of combining the bicolor process and the IML process is adopted, the part pattern generates the stereoscopic impression after polarization in vision. Therefore, the decoration effect of the decoration parts is enriched, and the effect can not be realized by processes such as water transfer printing, INS (pre-forming and high-pressure forming of a film with the appearance without the positioning effect, punching of redundant films, and injection molding of the punched films in an injection mold), IML (pre-forming and high-pressure forming of the film with the appearance without the positioning effect, punching of redundant films, and injection molding of the punched films in the injection mold), double-color injection molding and the like.

Detailed Description

A manufacturing method of an automotive interior part combining double colors and an IML process comprises the following specific steps:

step one, forming a designed 3D color molding (a designed part drawing file corresponding to first color injection molding) in a cavity of a high-pressure forming mold, wherein the high-pressure forming mold is used for plastic sucking of an IML membrane;

step two, heating the high-pressure forming die in the step one, and then putting the IML membrane into the die so that the IML membrane forms a 3D one-color modeling effect required by design; and cutting the IML film formed with the 3D one-color modeling effect.

Step three, forming a punching die by the designed 3D color model and the boundary thereof;

step four, putting the IML film with the 3D color modeling effect formed in the step two into a punching die in the step three to punch off the redundant part; and carrying out dust removal, grease removal and impurity removal treatment on the punched IML membrane.

Step five, forming the designed 3D color model in a cavity of a first injection mold, wherein the first injection mold is used for injection molding of a polycarbonate transparent interior part;

sixthly, placing the IML membrane punched in the fourth step into a cavity of a first injection mold, and injecting transparent polycarbonate into the cavity of the first injection mold, so that the IML membrane is attached to one side of the transparent polycarbonate interior part when the transparent polycarbonate interior part is molded;

forming the designed 3D one-color and two-color modeling (the designed part drawing file corresponding to the second-color injection molding) in a cavity of a second injection mold, wherein the second injection mold is used for injection molding of a second interior part;

and step eight, placing the polycarbonate transparent interior part which is attached with the IML membrane after injection molding in the step six into a cavity of a second injection mold, and injecting a second raw material into the cavity of the second injection mold, so that when the second interior part is molded, the polycarbonate transparent interior part and the second interior part are attached together, and the IML membrane is attached between the polycarbonate transparent interior part and the second interior part to form the automotive interior part which combines double colors and the IML process. The IML film is attached between the polycarbonate transparent interior part and the second interior part and is not in direct contact with the outside. So as to ensure the wear resistance and the scratch resistance required by the patterns of the interior trim parts.

The polycarbonate transparent raw material needs to be baked in an oven for 4 hours at 110 ℃ in advance. Removing water from the raw material. The second raw material needs to be baked in an oven for 4 hours at 110 ℃ in advance. Removing water from the raw material. The second raw material is generally a mixture of a terpolymer of three monomers of acrylonitrile, butadiene and styrene and polycarbonate.

The automobile interior part which is manufactured by adopting the manufacturing method of the automobile interior part combining the double colors and the IML process and combines the double colors and the IML process not only can generate various inner pattern patterns, but also can form three-dimensional transparent feeling and embody diversified positioning patterns. Particularly, through the design of the modeling and the IML film pattern, and then the special process of combining the bicolor process and the IML process is adopted, the part pattern generates the stereoscopic impression after polarization in vision. Therefore, the decoration effect of the decoration parts is enriched, and the effect cannot be realized by the processes of water transfer printing, INS, IML, double-color injection molding and the like.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.