JPH11123755A - Method for processing end part of skin integrated resin molded article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep appearance excellent by processing an end part of a skin integrated resin molded article so that sections of a base, a cushion foam material and others may not seen from outside by a simple end part processing wherein the end part is pressed and heated. SOLUTION: The end part side (r) of a skin integrated resin molded article R made to protrude laterally from a backing face 1a of a backing jig 11 is pressed from the skin material 3 side by a heating plate 10 made to heat to a temperature of a melting point of a thermoplastic resin base 1 or above and thereby the base 1 is softened by heating and bent to the direction perpendicular practically to the backing face 1a of the backing jig 11. Thereby the end part side (r) of the skin integrated resin molded article R is formed to be faced with a skin material 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base material molded from a thermoplastic synthetic resin into a predetermined three-dimensional shape, and a base material lined with a cushion foam material as a roof lining or rear tray for interior parts of a vehicle. And a skin material integrally laminated and adhered to the surface side of the body with an adhesive.

[0002]

2. Description of the Related Art As an example of a roof lining for automobiles as an integral skin resin molded product, as shown in FIG. 4, a polypropylene-based thermoplastic resin mixed with reinforced glass fiber is used as a lining substrate 1 and a polyurethane slab cushion foam is used. A tricot made of polyester lined with a material 2 is used as a skin material 3, and an olefin-based hot melt 4 is used as an adhesive 4 to preheat and then cold-pressed to apply a skin simultaneous adhesion molding process. .

[0003] The roof lining is formed so that an end portion thereof is bent obliquely toward the roof side of the vehicle body. Also,
This end portion is subjected to a terminal treatment for cutting off and removing a terminal such as an excess skin material.

If the end portion is simply cut as shown in FIG. 5, the thickness of the lining base material 1 and the cushion foam material 2 etc. is changed to a black coating of the window glass W in a mounted state on the vehicle interior ceiling. Since it is located below F and may be seen from the outside, it is not preferable in appearance. In addition, when the end surface is in contact with another adjacent member, abnormal noise or the like is generated due to vibration during traveling, and the skin material 3 is liable to peel off from the end due to friction or the like. is there.

On the other hand, as shown in FIG. 6, if the terminal of the skin material 3 is wound around the back side from the end of the lining base material 1 and adhered and fixed, the thickness of the lining base material 1, the cushion foam material 2 and the like is increased. Are not visible from the outside, and the skin material 3 can be prevented from peeling off from the end. However, since this terminal treatment cannot be performed at the same time as the preheating cold press bonding of the lining base material 1 and the skin material 3, the bonding treatment must be separately performed using an adhesive.
The bonding process is not only time-consuming, but also may impair the working environment.
This is not preferable because it is likely to occur at the entangled portion of the slab.

[0006]

SUMMARY OF THE INVENTION According to the present invention, the wall thickness of a lining base material, a cushion foam material, or the like can be seen from the outside by a simple end treatment such as pressing and heating the end of a skin-integrated resin molded product. It is an object of the present invention to provide a method for treating an end of a skin-integrated resin molded product, which can be treated so as not to have an end and can be kept in a good appearance.

[0007] In addition, the present invention can reliably prevent the skin material from peeling off from the end portion, and suppress generation of abnormal noise and the like even when the end surface may come into contact with another adjacent member. It is an object of the present invention to provide a method of treating an end portion of a skin-integrated resin molded product.

[0008]

According to a first aspect of the present invention, there is provided a method for treating an end portion of a skin-integrated resin molded product, wherein the end portion of the skin-integrated molded product is laterally protruded from a receiving surface by a predetermined width. A jig for assembling and mounting the skin-integrated resin molded product on the receiving surface on the base material side, and heating the skin to a temperature equal to or higher than the melting point of the base material and protruding laterally from the receiving surface of the receiving jig A hot plate that presses the end side of the integrated resin molded product, and the end side of the skin integrated resin molded product that protrudes from the receiving surface of the receiving jig to a temperature higher than the melting point of the base material from the skin material side. Pressing with a heated hot plate, and heating and softening the base material, bending it in a direction substantially perpendicular to the receiving surface of the receiving jig, and forming the end of the skin-integrated resin molded product with the skin material Have been.

According to a second aspect of the present invention, there is provided a method for treating an end of a skin-integrated resin molded product, wherein the end of the skin-integrated resin molded product protruding laterally from a receiving surface of a receiving jig is formed from a skin material side. It is pressed with a hot plate heated to a temperature equal to or higher than the melting point of the material, and the base material is heated and softened to bend and press contact with the side of the receiving jig in a direction substantially perpendicular to the receiving surface of the receiving jig, and an adhesive is used. In addition, the skin material side is impregnated with the softened resin component of the base material, and the thin-walled end portion of the resin molded product integrally formed with the skin is exposed and formed with the skin material.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 to 3, the illustrated embodiment is similar to the embodiment shown in FIG. This shows a case where processing is performed. In the respective drawings, the same components as those shown in FIG. 4 are denoted by the same reference numerals.

The roof lining for automobiles is made of a polyester tricot lined with a thermoplastic resin such as polypropylene mixed with reinforced glass fiber as a lining substrate 1 and a cushion foam material 2 such as a polyurethane slab. 3, and is manufactured by applying a skin-integral simultaneous adhesive molding that is preheated and then cold pressed as an adhesive 4 such as an olefin-based hot melt.
In this case, the end portion r of the roof lining R is also bent obliquely toward the roof of the vehicle body.

In the end treatment, as shown in FIG. 1, the end side r of the roof lining R has a predetermined width L from the receiving surface 10a.
A receiving jig 10 that protrudes only to the side and assembles and mounts the roof lining R on the side of the lining substrate 1, and receives and cures at a temperature equal to or higher than the melting point of the thermoplastic resin forming the lining substrate 1. A hot plate 11 that presses the end R of the roof lining R that protrudes laterally from the receiving surface 10a of the tool 10 is used.

As shown in FIG. 2, the end portion r of the roof lining R protruding from the receiving surface 10a of the receiving jig 10 is heated from the side of the skin material 3 as shown in FIG.
To soften the lining substrate 1 by heating, and bend it in a direction substantially perpendicular to the receiving surface 10a of the receiving jig 10. In addition, receiving surface 1 of jig 10 for receiving lining substrate 1
0a, bending and pressing the jig side surface 10b in a direction substantially perpendicular to the surface of the jig, and impregnating the adhesive material 4 and the softened resin component of the lining base material 1 into the skin material 3 side to press-mold the end side r thin. Do.

Receiving jig 10 used for this terminal processing
Since the roof lining R, whose terminal side r is bent obliquely toward the roof side of the vehicle body, is mounted on the receiving surface 10a on the lining substrate 1 side, the outer periphery of the receiving surface 10a is inclined downward. Are formed as inclined surfaces. Also,
Jig 10 which receives lining substrate 1 by pressing by hot plate 11
The outer peripheral edge of the receiving jig 10 is formed as a wedge-shaped overhanging flange portion because the outer peripheral edge of the receiving jig 10 is bent and pressed from the receiving surface 10a to the jig side surface 10b in a substantially perpendicular direction.

When the synthetic resin forming the lining substrate 1 is a polypropylene-based thermoplastic resin,
Since the melting point is about 160 ° C., the heat may be applied to about 160 to 200 ° C. which is higher than the melting point. This hot plate 1
Numeral 1 is made of a metal material such as iron having good thermal conductivity, and is formed so that heat transfer temperature can be efficiently transferred to the terminal side of the roof lining R. Further, the hot plate 11 is provided so as to be able to cope with the end processing around the outer periphery of the roof lining R. According to the temperature setting of the hot plate 11, even if an olefin-based hot melt is used as the adhesive 4, the softening point is about 90 to 110 ° C., so that the softening point can be heated and softened together with the lining substrate 1.

The hot plate 11 is provided on the receiving surface 1 of the receiving jig 10.
0a, end side r of roof lining R protruding sideways
And a side surface 11b that heats and softens the lining substrate 1 and bends the receiving surface 10a of the receiving jig 10 in a direction substantially perpendicular to the end surface 11a of the roof lining R. Jig side surface 10b of the tool 10
It is equipped to move up and down in parallel with. Further, since the hot plate 11 impregnates the skin material 3 with the adhesive 4 and the softened resin component of the lining base material 1 and press-molds the end portion r thin, the side surface 11 b and the receiving jig 10 are formed. The interval is set so that the relative interval G to the jig side surface 10b is smaller than the thickness t of the end portion r.

By using the receiving jig 10 and the hot plate 11,
As shown in FIG. 1, the end side r is protruded laterally by a predetermined width L, and the roof lining R is assembled and mounted on the receiving surface 10 a of the receiving jig 10 on the lining base material 1 side. The roof lining R may be preliminarily subjected to a terminal processing for cutting off a terminal such as an excess skin material. With respect to the roof lining R, the hot plate 11 is in the range of 160 to 20 as described above.
Heating is performed by heating the heater at about 0 ° C. or the like to lower the end portion R of the roof lining R which protrudes from the receiving surface 10 a of the receiving jig 10 to the side.

With the pressure drop by the hot plate 11,
As shown in FIG. 2, the end side r of the roof lining R protruding laterally from the receiving surface 10a of the receiving jig 10 is pressed from the skin material 3 side, and the lining base material 1 is heated and softened. It is bent in a direction substantially perpendicular to the receiving surface 10a of the tool 10. Further, since the terminal side r is bent in a direction substantially perpendicular to the receiving surface 10a of the receiving jig 10 and pressed against the jig side surface 10b within the gap G, the cushion foam material 2 is compressed and the adhesive 4 In addition, the softened resin component of the lining base material 1 impregnates the cushion foam material 2 to the skin material 3 side. Thereby, the end portion r of the roof lining R is pressed and formed to be thin, so that the end surface can be formed to be surfaced with the skin material 3.

The roof lining R thus constructed
In the state of attachment on the vehicle interior ceiling, even if the end face r may be located below the black film F of the window glass W as shown in FIG. Since it is formed and further bent at right angles to the end portions bent obliquely toward the roof side of the vehicle body, the thickness of the lining base material 1, the cushion foam material 2, etc. You can keep it in good shape because it is less visible.

The receiving surface 1 of the jig 10 receives the end r.
By bending and pressing the jig side surface 10b in a direction substantially perpendicular to 0a, the adhesive 4 and the softened resin component of the lining base material 1 are impregnated into the skin material 3 side, and the end side r is pressed into a thin wall. Therefore, the skin material 3 can be tightly adhered to the lining base material 1, so that the skin material 3 can be reliably prevented from peeling from the end. In addition, since the end surface is thin and surface-formed with the skin material 3, even if it comes into contact with the window glass W, generation of abnormal noise and the like can be suppressed.

Although the above-described embodiment has been described based on the roof lining for an automobile, it can also be applied to terminal processing such as a rear tray, a door lining, and a body side lining as interior parts of the vehicle. In addition, the present invention can be widely applied not only to automobile parts, but also to those in which the end exposed to the outside of the skin-integrated resin molded product needs to be beautifully finished.

[0022]

As described above, according to the method for treating the end portion of the skin-integrated resin molded product according to the first aspect of the present invention, the end of the skin-integrated resin molded product protruding laterally from the receiving surface of the receiving jig. Part is pressed with a hot plate heated to a temperature equal to or higher than the melting point of the base material from the skin material side, and the base material is softened by heating and bent in a direction substantially perpendicular to the receiving surface of the receiving jig. By applying a simple pressing process to form the end of the molded product with the surface material, the end surface can be formed with the surface material and the thickness of the base material, cushion foam material, etc. is not visible from the outside It is possible to keep the appearance good because it can be formed.

According to the method for treating the end of a skin-integrated resin molded product according to the second aspect of the present invention, the end of the skin-integrated resin molded product protruding laterally from the receiving surface of the receiving jig is placed on the skin material side. Pressed with a hot plate heated from above, and the base material is softened by heating and bent and pressed against the side of the jig in a direction substantially perpendicular to the receiving surface of the receiving jig, and the adhesive and the softened resin of the base material By impregnating the skin material side with the component, by forming the end portion of the skin-integrated resin molded product that is pressed and molded into a thin wall with the skin material,
The skin material can be tightly bonded to the base material, and the skin material can be reliably prevented from peeling off from the end. Further, since the end surface is thin and surface-formed with a skin material, even if the end surface comes into contact with another adjacent member, the end processing can be performed so as to suppress generation of abnormal noise and the like. .

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a method of treating an end portion of a skin-integrated resin molded product according to the present invention before pressing treatment with a hot plate.

FIG. 2 is an explanatory view showing a method of processing an end portion of a skin-integrated resin molded product according to the present invention during a pressing process using a hot plate.

FIG. 3 is an explanatory view showing a skin-integrated resin molded product subjected to an end treatment by the method according to the present invention in an attached state together with another adjacent member.

FIG. 4 is an explanatory view showing an end side of a roof lining as a skin-integrated resin molded product according to a general example.

FIG. 5 is an explanatory view showing an end structure of a roof lining according to a conventional example.

FIG. 6 is an explanatory view showing another end structure of the roof lining according to the conventional example.

[Explanation of symbols]

 R Skin-integrated resin molded product r End side of skin-integrated resin molded product 1 Base material 2 Cushion foam material 3 Skin material 4 Adhesive 10 Receiving jig 10a Receiving jig receiving surface 10b Receiving jig side surface 11 Heat Board

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI B32B 31/20 B32B 31/20 // B29L 9:00 31:58

Claims (2)

[Claims] 1. A base material molded into a predetermined three-dimensional shape from a thermoplastic synthetic resin, and a skin material lined with a cushion foam material and integrally laminated and adhered to the surface side of the base material with an adhesive. A method for treating an end of a skin-integrated resin molded product, wherein the end of the skin-integrated molded product is protruded laterally from a receiving surface by a predetermined width, and the skin-integrated resin molded product is placed on the receiving surface on the base material side. A receiving jig to be mounted and mounted, and a hot plate that is heated to a temperature equal to or higher than the melting point of the base material and presses the end side of the skin-integrated resin molded product protruding laterally from the receiving surface of the receiving jig. The end of the skin-integrated resin molded product that protrudes laterally from the receiving surface of the receiving jig is pressed from the skin material side with a hot plate heated to a temperature equal to or higher than the melting point of the base material, and the base material is pressed. Heated and softened, bent in a direction substantially perpendicular to the receiving surface of the receiving jig, and the end of the resin molded product with the skin was covered. End processing method of the integral skin molded article, characterized in that in order to form the figuring in. 2. An end portion of a skin-integrated resin molded product that protrudes laterally from a receiving surface of a receiving jig is pressed from a skin material side by a hot plate heated to a temperature equal to or higher than a melting point of a base material, and The base material is heated and softened, bent and pressed against the side of the jig in a direction substantially perpendicular to the receiving surface of the receiving jig, and the adhesive and the softened resin component of the base material are impregnated into the skin material side to form the skin integrally. 2. The method according to claim 1, wherein an end portion of the resin molded product which is pressed to a thin wall is formed with a surface material.