JP2503890Y2 - Automotive door trim - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile door trim attached to a side surface of an automobile door inner panel.

[0002]

2. Description of the Related Art As an example of a conventional door trim 20, as shown in FIG. 2, a core 22 made of wood-based hardboard, hard polyurethane, etc., in which a portion corresponding to an armrest 21 is projected, is used. PVC resin on the surface beforehand,
It had a structure in which a skin material 23 such as an ABS resin or a fabric was attached. In the case of a door trim using a particularly hard polyurethane core material as the core material 22, the construction method is (1). An integral foam molding method in which the skin material 23 is set in a urethane foam molding die and a hard polyurethane raw material is injected and foamed. (2). There is a post-skin pasting method in which the hard polyurethane core material 22 is first foam-molded and then the skin is pasted.

[0003]

[Problems to be Solved by the Invention] In the former method, there is an advantage in that the process is shortened by integrally foaming the skin,
Urethane voids generated when pouring hard polyurethane,
There was a problem that a waste loss including the skin occurred due to defects such as lack of meat. Further, in the latter method, it is possible to deal with problems that may occur during molding of the hard polyurethane core material, such as repair before the skin is attached and disposal.

However, in the case of the latter construction method, hard
It is necessary to apply a mold release agent to the foaming mold when molding the retin core material, inject polyurethane by open casting or closed casting, foam and harden it, and then remove the core material, and further attach the skin. At times, it was a contradictory process that the core material and the epidermis would not adhere unless the release agent on the surface of the core material was removed and then the adhesion treatment was performed. And as a method of removing the release agent, 1-
There are a washing method with a solvent such as 1-1 trichloroethane and a power washing method using an aqueous washing method. However, both methods require large-scale equipment, and especially in the former case, they are becoming unusable in the future due to environmental problems. Also release
There is a case where the core material undergoes dimensional change due to moisture absorption by going through the agent cleaning step, which leads to the occurrence of defects.

The present invention is intended to improve the drawbacks of the latter construction method described above, and by partially modifying the structure of the door-trim, a skin-sticking at the time of molding the door-trim composed of a hard polyurethane core material and a skin material. An object of the present invention is to provide a door trim that does not require a release agent removing step at the time of attachment.

[0006]

Thus SUMMARY OF THE INVENTION The present invention features in order to achieve the above object, the own was laminated skin material to the rigid polyurethane core a composite of long fiber glass mat
In the trim, thermoplastic polyurethane automotive door a thin sheet embedded between the rigid polyurethane core surface and the skin material - - dynamic vehicle door in trim. The thin polyurethane sheet is an automobile door trim having a thickness of 40 μm or less.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of a door trim 1 according to a specific embodiment of the present invention. In FIG. 1, reference numeral 4 is a hard urethane core material composed of a hard polyurethane 2 and a long fiber glass mat 3 and the core material 4 is An armrest portion 7 and a shoulder portion 8 are formed so as to partially project from a part. Then, a thermoplastic polyurethane thin sheet 6 having a thickness of 40 μm or less is laminated on the entire surface of the core material 4, and the surface of the urethane thin sheet 6 is made of ABS resin, PVC resin, fabric or the like. The sheet-like skin material 5 made of is laminated and adhered via an adhesive. If the thickness of the polyurethane thin sheet is 40 μm or more, there is a problem that the sheet is too thick, which contradicts weight reduction and increases cost.

The automobile door trim 1 of the present invention is not restricted in its construction method, but the most preferable construction method will be briefly described below. A mold release agent is applied to the mold, and a thermoplastic polyurethane thin sheet is attached to the lower mold corresponding to the front side of the door rim, a long fiber glass mat is placed on the sheet, and then a rigid polyurethane foam raw material is applied. It is injected from above the long fiber glass mat by an open casting method or a closed casting method to foam and harden the rigid polyurethane raw material to mold a rigid polyurethane core material with a urethane sheet. After that, the hard polyurethane core material is released from the molding die, and the outer skin is attached by vacuum forming or the like in the outer skin attaching step to obtain a desired door trim of an automobile interior material. Incidentally, the above-mentioned method at the time of molding the core material described the case where the mold releasing agent was applied to the upper mold, but it is also possible to mold the core material by covering the upper mold with a thin urethane sheet instead of the mold releasing agent. Needless to say.

[0009]

[Effects of the Invention] As described above, the automobile door trim of the present invention has a structure in which a thin sheet of thermoplastic polyurethane is embedded between the hard polyurethane core material composited with long fiber glass mat and the outer skin to form the core material. Sometimes it is not necessary to apply a mold release agent to the lower mold, and therefore it is not necessary to remove the mold release agent even in the step of attaching the skin, which can reduce the number of steps and stabilize the adhesive force between the core material and the skin. I can. Further, in the present invention, since the core material is molded in advance, defects such as voids and underfills that occur during molding can be repaired and discarded before the skin is attached, and waste of the core and the skin can be eliminated. There is an effect such as being able to.

[Brief description of drawings]

FIG. 1 is a sectional view of an automobile door-trim according to the present invention.

FIG. 2 is a cross-sectional view of a conventional automobile door-trim.

[Explanation of symbols]

 1 Door-Trim 2 Rigid Polyurethane 3 Long Fiber Glass Mat 4 Core Material 5 Skin 6 Thermoplastic Polyurethane Thin Sheet

Claims (1)

(57) [Scope of utility model registration request] 1. A motor vehicle door by laminating a skin material to the rigid polyurethane core a composite of long fiber glass mat - the trim, thermoplastic polyurethane thin between <br/> of the rigid polyurethane core surface and the skin material A car door trim featuring a buried seat.