JP2693399B2 - Molding manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a molding used for vehicles, ships, buildings and the like.

[0002]

2. Description of the Related Art Conventionally, for example, as shown in FIG. 8, a bumper molding 41 has a molding main body 42 and a leg portion 43 serving as a clip integrally formed of an ionomer resin. The decorative surface 45 of the main body 42 is provided with a decorative film 45 in the mounting recess on the surface.
5 is covered with a coating resin layer 46 made of a transparent ionomer resin.

[0003]

However, since the above-mentioned conventional bumper molding 41 is entirely formed of an ionomer resin, it has too much rigidity and cannot follow a small corner portion when mounted. In addition, there is a problem that it is expensive because it is made entirely of an ionomer resin. In addition, a transparent ionomer resin (coating resin layer 4
The decorative surface 44 covered with 6) had a problem that it could not be used for a long time because the ionomer resin itself had no weather resistance.

Therefore, the object of the present invention is to make the main body of the molding a flexible synthetic resin that can be bent, the legs are made of ionomer resin, and the legs are tough and have appropriate elasticity, and the material cost is low. It can be done and the decorative surface is
It is to provide a method for manufacturing a molding that is beautiful and has long-term weather resistance .

[0005]

According to a first aspect of the present invention, there is provided a soft synthetic resin molding body having a decorative surface on its surface, and an ionomer resin leg portion serving as a clip. A method for obtaining a molding formed by joining the above, wherein the main body is joined to one surface of the metal foil sheet layer in the non-decorative surface portion, the other surface of the metal foil sheet layer is joined to the leg portion, and the decorative surface is We provided on the surface of the body
A transparent adhesive layer is provided on the colored layer, and it is transparent on the adhesive layer.
It is characterized in that it is formed by adhering the above-mentioned fluororesin .

According to a second aspect of the present invention for achieving the above object, a decorative laminated film having a back surface of a sheet of the same material as that of the molding body is placed in an extrusion molding die to form the laminated film. A soft synthetic resin to be the main body is extruded on the sheet side to form a main body having a decorative surface on the surface, and the legs of the ionomer resin are heated to the predetermined non-decorative surface portion of the main body through the metal foil sheet layer. It is characterized in that they are joined by melting.

A third aspect of the present invention for achieving the above object.
In the step of forming a main body having a decorative surface on the surface according to the invention of claim 2, extruding a laminated film for a decorative surface in which a colored layer and a fluororesin layer are superposed and joined to a sheet of the same material as the molding main body. It is characterized in that it is placed in a molding die, and a soft synthetic resin to be a main body is extruded on the sheet side of the laminated film to form a main body having a decorative surface of the fluororesin layer on its surface.

[0008]

In the invention of claim 1, the main body is adhered to one side of the metal foil sheet layer with an adhesive, and the legs are joined to the other side of the metal foil sheet layer. The ionomer resin has a carboxylic acid group in its molecular structure and can be bonded to the metal particles of the metal foil sheet layer by heat melting of the resin. The metal foil sheet layer serves for adhesion of the ionomer resin. In the resulting molding, the body is soft and can be bent if desired. The legs are strong and resilient, which is desirable as a clip.

Further, in the invention of claim 1 , since the colored layer on the decorative surface is covered with the fluororesin layer, the weatherability of the colored layer is good.

In the second aspect of the present invention, since the soft synthetic resin is supplied to the sheet side of the same material as the molding body in the laminated film for the decorative surface, the main body having the decorative surface is well formed by extrusion molding. . The legs of the ionomer resin are joined to the main body via the metal foil sheet layer. One side of the metal foil sheet layer is joined to the main body, and the other side of the metal sheet layer is joined to the legs of the ionomer resin. The metal foil sheet layer has good adhesion to the ionomer resin.

In the third aspect of the invention, the laminated film is formed by extrusion molding the main body of soft synthetic resin on the sheet side of the same material as the molding main body. The decorative surface of the main body has a weather resistance because the colored layer is covered with a fluororesin layer.

[0012]

Next, a first embodiment of the present invention will be described with reference to FIGS. FIG. 4 shows a bumper molding 1 attached to a bumper of an automobile. The bumper molding 1 mainly has a molding main body (also simply referred to as a main body) 2 and a proper number of leg portions 5 that perform a clip action. As shown in FIG. 1, the main body 2 is made of PVC.
Made of soft synthetic resin such as (polyvinyl chloride),
The outer surface side is processed to form the decorative surface 3.
As shown in FIG. 3, the decorative surface 3 is provided with a colored layer 11 formed by painting on the upper surface of the main body 2, a transparent adhesive layer 12 is applied to the colored layer 11, and the transparent fluororesin layer is applied to the adhesive layer 12. Thirteen
Are stacked and glued. The color of the colored layer 11 is the same as or different from the surrounding exterior color. The fluororesin layer 13 on the surface has good weather resistance, and the colored layer 11 below
Protect.

The leg portion 5 is made of an ionomer resin and is divided into two halves having a spring action at the tip end side, and the base portion 6 is slightly embedded in the back surface 4 of the main body 2 and joined. Reference numeral 7 denotes a joint. As shown in FIG. 2, the main body 2
The joint portion 7 between the leg portion 5 and the base portion 6 is provided via the metal foil sheet layer 8. The metal foil sheet layer 8 is formed of a metal foil sheet, and the metal foil sheet layer 8 of this example has a thickness of 100 μm, for example.
m aluminum foil is used. The main body 2 is adhered to the surface of the metal foil sheet layer 8 via the adhesive layer 10, and the leg 5
Is adhered to the other surface of the metal foil sheet layer 8 by heating and melting the base portion 6. Since the leg portion 5 is made of an ionomer resin, it is chemically adhered to the surface of the metal foil sheet layer 8 by heating and melting the base portion 6. The main body 2 and the leg 5 are firmly joined by the joint 7.

The bumper molding thus formed is mounted on the mounting portion of the automobile bumper through the legs 5-5.

Next, a second embodiment of the present invention will be described with reference to FIGS.
It will be described based on. The second embodiment is a case where a wind molding 21 for an automobile is manufactured, and FIG. 5 shows a main body 22 and legs 2 of the manufactured wind molding 21.
5 shows a cross section including the joint 27 of FIG. Body 22 is P
It is made of soft synthetic resin such as VC, and sealing members 23, 23 for sealing are attached to predetermined portions. Body 2
The outer surface side of 2 is processed to form the decorative surface 31. As shown in FIG. 7, the decorative surface 31 is provided with a colored layer 32 by painting on the upper surface of the main body 22, a transparent adhesive layer 33 is provided on the colored layer 32, and a transparent fluororesin is provided on the adhesive layer 33. Layer 34 is overlaid and adhered. The color of the coloring layer 32 is the same as the surrounding exterior color or a predetermined different color.

In the molding of the wind molding 21 of this example, the colored layer 32,
A laminated film F, in which an adhesive layer 33 and a fluororesin layer 34 are sequentially laminated and bonded, is prepared in advance, and the laminated film F is placed in an extrusion molding die.
Is extruded to bond the main body 22 and the laminated film F (M in FIG. 7 indicates a fused portion between the sheet 22A and the main body 22), and the decorative surface 31 of the fluororesin layer 34 is formed on the surface of the main body 22.
Can be formed.

The leg portion 25 is formed of an ionomer resin, a spring action is applied to the tip end side thereof, and the base portion 26 is slightly embedded in the back surface 24 of the main body 22 and joined thereto. FIG.
As shown in, the joint portion 27 of the main body 22, the leg portion 25, and the base portion 26 is provided via the metal foil sheet layer 28. That is, the main body 22 is adhered to one side of the metal foil sheet layer 28 via the adhesive layer 30, and the leg portions 25 are connected to the metal foil sheet layer 2
It adheres to the other surface of 8 by heating and melting. The leg portion 25 is an ionomer resin, and is chemically bonded to the metal foil sheet layer 28 by heating and melting the base portion 26 and firmly adheres thereto.

The window molding 21 thus formed is provided with leg portions 25 to 25 at the mounting portion of the window of the automobile.
It is installed through.

Although the above-mentioned embodiments have been described with respect to the bumper molding 1 and the wind molding 21, the present invention is not limited to the method of manufacturing a molding for an automobile, but can be applied to a method of manufacturing a molding for a vehicle, a ship, a building, or the like. Widely applied.

[0020]

According to the invention of claim 1, the main body is bonded to one surface of the metal foil sheet layer, and the leg portion is bonded to the other surface of the metal foil sheet layer. Therefore, the bondability between the main body and the leg portion is strong. Is. According to the invention of claim 1, since the ionomer resin is used only in the leg portion, the amount of the ionomer resin is smaller than that in the conventional molding in which the main body and the leg portion are made of the ionomer resin, and thus the cost can be reduced. Since the main body of the molding obtained by the invention of claim 1 is made of a soft resin and the legs are made of an ionomer resin, the main body can be attached even to a tight portion having a curved shape, and the legs have a tough and elastic clip. It is convenient to make it work. According to the invention of claim 1 , the decorative surface is formed by polymerizing and bonding the transparent fluororesin layer on the colored layer provided on the surface of the main body through the transparent adhesive layer. Protected for a long period of time through a fluororesin layer that is beautiful and weather resistant through the resin layer. Further, according to the invention of claim 2 , a main body of a soft synthetic resin having a decorative surface bonded to the surface is formed by extrusion molding, and a leg portion is bonded to the main body via a metal foil sheet layer to thereby perform a predetermined process. You can get the molding of This molding also has the same effect as the first aspect. According to the invention of claim 3 , the main body of the soft synthetic resin having the decorative surface joined thereto is extruded. The decorative surface is protected by a transparent fluororesin layer covering the colored layer for a long period of time. Furthermore, this molding has the same effect as the second aspect .

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a bumper molding according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a virtual line II portion of FIG.

FIG. 3 is an enlarged view of a virtual line III portion of FIG.

FIG. 4 is an overall view of a bumper molding.

FIG. 5 is a sectional view of a wind molding according to another embodiment of the present invention.

FIG. 6 is an enlarged view of a virtual line VI portion of FIG.

7 is an enlarged view of an imaginary line VII portion in FIG.

FIG. 8 is a cross-sectional view of a conventional bumper molding.

[Explanation of symbols]

 1… Bumper molding 2,22… Main body 3,31… Decorative surface 5,25… Leg part 7,27… Joint part 8,28… Metal foil sheet layer 10,12,30,33… Adhesive layer 11,32 … Coloring layer 13,34… Fluororesin layer 21… Wind molding

Claims (3)

(57) [Claims] 1. A method for obtaining a molding by joining a molding main body of a soft synthetic resin having a decorative surface on its surface and a leg portion of an ionomer resin to be a clip, wherein the main body is a non-decorative surface portion. In this case, one side of the metal foil sheet layer is bonded, the other side of the metal foil sheet layer is bonded to the leg portion, and the decorative surface is transparent on the colored layer provided on the surface of the main body.
A transparent adhesive layer is provided, and a transparent fluororesin is provided on the adhesive layer.
A method for manufacturing a molding, which comprises bonding and forming 2. A laminated film for a decorative surface having a back surface of a sheet of the same material as the molding body is placed in an extrusion molding die, and a soft synthetic resin to be the main body is extruded on the sheet side of the laminated film. A method for producing a molding, which comprises molding a main body having a decorative surface on its surface, and joining legs of an ionomer resin to a predetermined non-decorative surface portion of the main body through a metal foil sheet layer by heating and melting. 3. A laminated film for a decorative surface, in which a colored layer and a fluororesin layer are superposed and joined to a sheet of the same material as the molding body, is placed in an extrusion molding die, and a flexible film serving as a body is formed on the sheet side of the laminated film. The method for manufacturing a molding according to claim 2, wherein a synthetic resin is extruded to form a main body having a decorative surface of the fluororesin layer on its surface.