JP2000127863A - Motor vehicle molding and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To product a motor vehicle molding without using a solvent for adhesion by interposing an adhesive resin layer of a molding body consisting of a polar group-containing thermoplastic resin composition on the molding body and the overall or partial circumference of the molding body and a metal piece. SOLUTION: A molding body 1 for weather strips provided on the inside and outside of a rising and falling glass window 12 comprises a longitudinal vertical support part 2 and a decorative part 3 exposed to the surface, which are integrally molded. A metal piece 5 is buried in the longitudinal inner part of the vertical support part 2 and the decorative part 3. An adhesive resin layer 6 consisting of a polar group-containing thermoplastic resin composition satisfactorily adhesive to metal is fused and fitted to the molding body 1 and the overall or partial circumference of the metal piece 5. As the constituting material of the molding body 1, a resin such as olefinic resin, polypropylene as styrene resin, olefinic thermoplastic elastomer resin composition can be used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding body which is embedded in various molding bodies such as a wind molding, a weather strip outer molding, an inner molding and a roof molding, which are mounted on a vehicle such as an automobile. The present invention relates to a molding for automobiles in which metal pieces are integrally and firmly bonded, and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, various types of moldings in which a metal piece is buried inside such a type are integrally formed by a metal piece coated with an adhesive and a molding body such as vinyl chloride for bonding the molding body and the internal metal piece. It was common to adhere to

[0003]

Conventionally, in various moldings, when an adhesive is applied to the outer periphery of a metal piece, the application is not uniform and a drying process for volatilizing a solvent contained in the adhesive is required. A line is required, and the productivity is greatly affected by the time required for the drying process.The problem that the solvent evaporates during the drying process and gives off a bad smell has a serious adverse effect on the working environment in the factory. At present, it is desired not to use an adhesive solvent due to environmental problems given inside. The present invention solves the above problem, and does not use a metal piece embedded in a molding body and an adhesive containing a solvent for bonding, and when a material of an adhesive resin layer is in a molten state, a metal piece is formed. It is intended to use a polar group-containing thermoplastic resin composition that adheres well. Further, an olefin resin or a styrene resin, such as vinyl chloride, which has no environmental problems such as dioxin and has a low specific gravity and can contribute to a reduction in the weight of automobiles, is laminated around the polar group-containing thermoplastic resin composition. Accordingly, it is an object of the present invention to provide an automobile molding formed integrally with a metal piece.

[0004]

In order to achieve the above-mentioned object, in a molding for an automobile according to the present invention, a molding body is integrally formed with a vertical vertical supporting portion and a decorative portion exposed on the surface. A metal piece serving as a core is buried inside the molding body. An adhesive resin layer made of a thermoplastic resin composition containing a polar group is interposed and applied to the entire outer periphery or a part of the outer periphery of the molding body and the metal piece to form the entire molding body firmly. Further, the molding body is molded with a synthetic resin such as an olefin resin or a styrene resin, and a metal piece is embedded in the molding body. On this metal piece, an adhesive resin layer made of a thermoplastic resin composition containing a polar group is interposed and applied to the entire outer periphery or a part of the outer periphery, and the whole is integrally molded to achieve the intended purpose. is there. Furthermore, as a method of manufacturing various molding bodies, when a metal piece enters the inside of a die, the adhesive resin layer of the polar group-containing thermoplastic resin composition injected into the first extruder is used to form the molding body and the metal. The piece is applied to the entire outer periphery or a part of the outer periphery in a molten state and is integrally molded. After that, it is manufactured by cutting into predetermined dimensions through a cooling water tank and a take-off machine. When the molding body is molded with a synthetic resin such as an olefin-based resin or a styrene-based resin, when the metal piece enters the inside of the die, the polar group-containing thermoplastic resin composition injected into the first extruder is used. The adhesive resin layer of the object is applied in a molten state to the entire outer periphery of the metal piece or a part of the outer periphery. Thereafter, an olefin resin or a styrene resin injected into the second extruder is applied in a molten state to the entire outer periphery or a part of the outer periphery of the adhesive resin layer, and is integrally molded. After that, it is manufactured by cutting to a predetermined size through a cooling water tank and a take-off machine. Further, the metal piece is melt-adhered to the entire outer periphery or a part of the outer periphery in the first mold die by the adhesive resin layer from the first extruder, and then the second extruder in the second die. The olefin-based resin or the styrene-based resin is melt-coated on the entire outer periphery of the adhesive resin layer or on a part of the outer periphery to be integrally molded. After that, there is a method of manufacturing by cutting to a predetermined size with a cooling water tank, a take-off machine and a cutting machine.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a door panel for guiding and supporting an elevating glass window (12) in a door (11) of a vehicle (13) such as an automobile. FIG. 5 shows a molding body (1) mounted on the upper end of (10), and shows a molding body (25) mounted between a body panel (32) on the outer periphery of a window glass (13). is there.

Next, FIGS. 2 and 3 show a weatherstrip molding body (1) provided inside and outside the elevating glass window (12). The molding body shown in FIG. The vertical support portion (2) and the decorative portion exposed on the surface are integrally formed. A metal piece (5) is embedded in the vertical support part (2) and the decoration part (3) in the longitudinal direction. An adhesive resin layer (6) made of a polar group-containing thermoplastic resin composition which adheres well to metal is melt-coated on the entire outer periphery or a part of the outer periphery of the molding body (1) and the metal piece (5). It is. The molding body (1) shown in FIG. 3 is made of an olefin-based resin or a styrene-based resin, and is integrally composed of a vertical vertical support portion (2) and an outer decorative portion (3). It has been molded. A metal piece (5) is embedded in the vertical support portion (2) and the decoration portion (3) in the longitudinal direction. On the metal piece (5), an adhesive resin layer (6) made of a polar group-containing thermoplastic resin composition that adheres well to metal is melt-coated on the entire outer periphery or a part of the outer periphery.

The constituent materials of the molding body (1) and the molding body (25) are olefin resin or styrene resin such as polypropylene resin, olefin thermoplastic elastomer resin composition, styrene thermoplastic elastomer resin composition and the like. Resin is used. The constituent material of the metal piece (5) is stainless steel,
Steel, aluminum, etc. are used.

Further, the polar group-containing thermoplastic resin composition used for the adhesive resin layer (6) includes an ethylene-methacrylic acid copolymer or a metal salt thereof, or a composition thereof, and maleic anhydride or carboxylic acid. And a synthetic resin composed of a modified olefin resin composition or a modified styrene resin composition obtained by acid modification, epoxy modification, or the like.

The vertical support portion (2) has a soft olefin-based thermoplastic elastomer composition or a soft styrene-based heat-sensitive material above and below a portion pressed against the elevating glass window (12) shown in FIGS. 2, 3 and 4. Draining pressure contact pieces (8) and (8) made of a plastic elastomer resin composition are formed, and the drainage pressure contact pieces (8) and (8) are provided with pressure contact thin films (9) and (9) in contact with the elevating glass window (12). The material for the pressure-contact thin films (9) and (9) is made of a flocked material such as nylon, a urethane coat, or a mixed synthetic resin such as polyethylene having a different melt viscosity. Use something excellent.

Next, FIG. 4 shows a molding body (1) of a weatherstrip mounted on the outside of the elevating glass window (12), and a vertical support (2) made of an olefin resin or a styrene resin. And a decorative part (3) are formed in the longitudinal direction, and a metal piece (5)
Is embedded with an adhesive resin layer (6) interposed therebetween. The decorative portion (3) is provided only on the back side of the metal piece (5).
And a longitudinal opening (7) on the surface side.
The metal piece is exposed to the opening (7) without covering the adhesive resin layer (6), thereby enhancing the decorative value.

As another embodiment shown in FIG. 5, there is shown a molding body (25) mounted between a window glass (31) of an automobile and a vehicle body panel (32). Alternatively, the vertical supporting portion (26) and the decorative portion (27) in the longitudinal direction are integrally formed with a styrene resin. A metal piece (28) is embedded in the molding body (25) in the longitudinal direction inside. The metal piece (28) is melt-coated with an adhesive resin layer (29) of a polar group-containing thermoplastic resin composition on the entire outer periphery except the opening (30) serving to enhance the decorative value of the surface. It has been molded. Reference numeral (33) indicates an adhesive.

The embodiment shown in FIG. 6 shows a method for manufacturing the molding body (1). When the metal piece (5) enters the inside of the die (17), the polar group-containing thermoplastic resin composition constituting the adhesive resin layer (6) injected into the first extruder (15) is melted, Distribution pipe (14)
After being melt-coated on the outer periphery of the metal piece (5) inside the die (17) through the mold die (17), various synthetic resins of olefin resin or styrene resin injected into the second extruder (16) are used. It is melted, passes through the flow pipe (14), is thermally fused to the outer periphery of the adhesive resin layer (6), and is integrally laminated. Thereafter, the formed molding body (1) moves forward, passes through a cooling water tank (18), passes through a take-off machine (19), and is cut to a predetermined size by a fixed-size cutting machine (20) to form a molding.

The embodiment shown in FIG. 7 shows another example of molding the molding body (1). When the metal piece (5) enters the first die (21), the flow pipe (1) in which the polar group-containing thermoplastic resin composition constituting the adhesive resin layer injected into the first extruder (15) is melted.
4), after being melt-adhered to the outer periphery of the metal piece (5) inside the first die (21), the first die (2) is formed.
After passing through 1), the second mold die (22) enters and enters the second mold die (22).
Various synthetic resins such as olefin resin and styrene resin injected into the mold die (22) are melted and flowed through the flow pipe (14).
And heat-fused to the outer periphery of the bonding finger layer (6) inside the second die (22) to be integrally laminated. Thereafter, the formed molding body (1) moves forward, passes through the cooling water tank (18), passes through a take-off machine (19), and is cut into a predetermined size by a fixed-size cutting machine (20) to form a molding. .

Next, in the embodiment shown in FIG. 8, the roll forming (23) is installed between the first die (21) and the second die (22) in the manufacturing method described in FIG. Then, a method of pressing and forming the bent portion (24) of the metal piece (5) is shown. In addition, this metal piece (5)
Another example of forming the bent portion (24) in the first embodiment is as follows.
It is a matter of course that the roll forming (23) is installed before entering the die (21), and the bent portion (24) is formed on the metal piece (5).

FIG. 9 shows a manufacturing process for commercializing the molding body (1) in the manufacturing method according to FIG.
(A) shows a state in which an adhesive resin layer (6) is melt-adhered to the outer periphery of a metal piece (5), (b) shows a bent portion (24) formed by roll forming (23), and (c) shows a bent portion. The synthetic resin of the molding body (1) is melt-adhered to the outer periphery.

The polar group-containing thermoplastic resin composition of the adhesive resin layer (6) used in the first extruder (15) is heated at 150 to 240 ° C. to form the second extruder (1).
6) The olefin-based resin or the styrene-based resin is 160 to
It is heated at 240 ° C. and simultaneously molded integrally with one or two mold dies using two extrusion molding machines. As the olefin-based synthetic resin and the styrene-based synthetic resin, or a composition thereof, a resin such as an olefin-based thermoplastic elastomer resin composition, a styrene-based thermoplastic elastomer resin composition, or polypropylene is used. Examples of the polar group-containing thermoplastic resin composition include an ethylene-methacrylic acid copolymer or a metal salt thereof, or a composition thereof, and a modified olefin resin composition obtained by acid modification of maleic anhydride, carboxylic acid, or the like, or epoxy modification. Alternatively, a synthetic resin comprising a modified styrene resin composition is used. As the metal piece, stainless steel, steel plate, aluminum or the like is used.

[0017]

As described above, according to the present invention, the synthetic resin and the metal piece on the outer periphery are more firmly and tightly integrated than the conventional one in which the metal piece is embedded in the inside of the molding. Therefore, there is an effect that it can sufficiently cope with a blow or the like. Further, according to the present invention, the solvent contained in the adhesive is volatilized, as in the case of a conventional molding in which a single piece of metal coated with an ordinary adhesive is integrally molded with vinyl chloride as in conventional moldings. It has the effect of solving the problem of large waste in the drying process and productivity, and the problem that the solvent evaporates during the drying process, which causes bad odor, adversely affects the working environment in the factory, and also deteriorates the atmospheric environment. is there. And, for bonding metal embedded inside the molding body, without using an adhesive containing a solvent, when the adhesive resin layer made of a polar group-containing thermoplastic resin composition is in a molten state on the outer periphery of the metal piece. Since it adhered, the inside metal piece was adhered tightly, and the adhesive resin layer and the olefin resin or styrene resin of the molding body were fused and bonded to each other because they had heat-fusibility, and the whole was strong. There is an effect that can be integrated. Furthermore, according to the polar group-containing thermoplastic resin composition, dioxin and the like are not generated unlike the prior art, and the specific gravity is light, so that there is an effect that it is possible to sufficiently cope with the weight reduction of automobiles and the like. In addition, since an opening is provided in a part of the decoration part of the molding body and only a part of the surface of the metal piece inside is exposed to the outside, it is stronger than the one with the decorative band attached, and is safe, strong and decorative. Has a significant effect. In addition, as a method of manufacturing the molding body, when a metal piece passes inside one mold die, the adhesive resin layer made of the polar group-containing thermoplastic resin composition is surely fluidized and the metal piece is formed. Since it is securely and tightly adhered to the entire outer periphery or to a part of the outer periphery, the effect that the bonding with the heat-fusible olefin resin or styrene resin from the second extruder is ensured, This has the effect of being firmly fused without the occurrence of cracks. Also, two molding dies are used in the method of manufacturing the molding body, an adhesive resin layer is applied to the metal piece on the first die, and heat is applied to the outer periphery of the adhesive resin layer on the second die. The effect of firmly and firmly bonding with the olefin resin or styrene resin with adhesiveness, and the use of two mold dies, the simple shape of the mold, ease of manufacture, and failures can be prevented as much as possible. The effect is achieved.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a state in which various moldings of the present invention are mounted on a vehicle.

FIG. 2 is a vertical sectional side view of the weather strip of FIG. 1A-A of the present invention.

FIG. 3 is a vertical sectional side view of the weather strip of the present invention.

FIG. 4 is a vertical sectional side view of a weather strip mounted on the outside of the elevating glass window of the present invention.

FIG. 5 is a longitudinal sectional side view taken along the line 1B-B of the present invention.

FIG. 6 also shows the use of two extrusion molding machines of the present invention,
1 shows the manufacturing process of molding with one die
It is the longitudinal section side view in which the part was deleted.

FIG. 7 is a longitudinal sectional side view showing a manufacturing process of a molding using two extrusion molding machines and two mold dies according to the present invention, with one part being omitted.

8 is a longitudinal sectional side view of a part of the two mold dies shown in FIG. 7 of the present invention in which roll forming is interposed and one part is omitted.

FIG. 9 is a vertical sectional side view showing the order of the shapes of the bent portion of the molding body and the metal piece of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Molding main body 2 Vertical support part 3 Decorative part 5 Metal piece 6 Adhesive resin layer 7 Opening 8 Drain pressure contact piece 10 Door panel 11 Door 12 Elevating glass window 15 1st extrusion molding machine 16 2nd extrusion molding machine 17 Die 18 Cooling water tank 20 Fixed-size cutting machine 21 First mold die 22 Second mold die 23 Roll forming 25 Molding body 26 Vertical support part 27 Decoration part 28 Metal piece 29 Adhesive resin layer 30 Opening 31 Wind glass 32 Body panel

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification FI FI Theme Court ゛ (Reference) // B29L 31:30 (72) Inventor Katsuhisa 1-18-18 Kubogaoka, Moriya-cho, Kitasoma-gun, Ibaraki Pref. Ground 12 System Technical Co., Ltd. F-term (reference)

Claims (5)

[Claims] 2. Description of the Related Art In various moldings mounted on various parts of a vehicle such as an automobile, a molding body is formed of a vertical supporting portion in a longitudinal direction and a decorative portion exposed on the surface, and the molding body has a metal piece inside. And an adhesive resin layer of the molding main body made of a thermoplastic resin composition containing a polar group is melt-coated on the entire outer periphery or a part of the outer periphery of the molding main body and the metal piece. Molding. 2. In various moldings to be mounted on various parts of a vehicle such as an automobile, the molding main body forms a vertical supporting portion in the longitudinal direction and a decorative portion exposed on the surface, and the molding main body has a longitudinal internal portion. Various metal pieces are embedded in the metal piece, and an adhesive resin layer made of a polar-containing thermoplastic resin composition is melt-coated on the entire metal piece or a part of the outer circumference, and the entire outer circumference or one part of the adhesive resin layer is applied. An automotive molding characterized in that an olefin-based resin or a styrene-based resin is melt-adhered to the surface. 3. A method of manufacturing various moldings, wherein a metal piece penetrates through an adhesive resin layer made of a polar group-containing thermoplastic resin composition injected into a first extruder while a metal piece enters the inside of a die. 2. The method according to claim 1, wherein the metal piece is melt-adhered to the entire outer circumference or a part of the outer circumference and the molding body and integrally formed, then advanced, solidified in a cooling water tank, and cut to a predetermined size by a take-off machine. Manufacturing method of automotive molding. 4. A method of manufacturing various moldings, wherein a metal piece penetrates through an adhesive resin layer made of a polar group-containing thermoplastic resin composition injected into a first extruder while a metal piece enters the inside of a mold die. After being melt-adhered to the entire outer periphery or a part of the outer periphery of the metal piece, an olefin-based resin or a styrene-based resin injected into a second extruder is melt-adhered to the entire outer periphery or a part of the outer periphery of the adhesive resin layer. 3. The method for manufacturing a molding for an automobile according to claim 2, wherein the molding is integrally performed, and then advanced to be solidified in a cooling water tank, cut through a take-off machine and cut to a predetermined size by a fixed-size cutting machine. 5. A method for manufacturing various moldings, comprising: bonding an adhesive layer made of a polar group-containing thermoplastic resin composition injected into a first extruder while a metal piece passes through a first mold die; After being melt-adhered to the entire outer periphery or a part of the outer periphery, the olefin-based resin or the styrene-based resin injected into the second extruder while passing through the second mold die or the entire outer periphery of the adhesive layer or 3. An automobile as claimed in claim 2, wherein the outer peripheral portion is melt-adhered to a part of the outer periphery to be integrally formed, then advanced, solidified in a cooling water tank, and cut to a predetermined size by a take-off machine and a fixed length cutting machine. Molding manufacturing method.