Abstract: An air bag cover having a surface sheet including a thermoplastic elastomer decorative layer on the surface side. The breaking elongation and break strength of the thermoplastic elastomer decorative layer is adjusted utilizing a filler powder. Thereby, the breaking rapidity at a tear line groove formation position is improved.

Abstract: An interior finish member having a door suitable for an air bag comprises a main body and a cover portion. The main body surrounds the periphery of the cover portion, and the main body and the cover portion form a continuous surface. The cover portion covers a folded air bag of an air bag device. The cover portion comprises: a door portion which covers the folded air bag; a breakable portion defined by a recessed periphery of the door portion whose thickness is thinner than adjacent portions of the interior finish member so that it may be broken easily in deployment of the air bag; and a hinge portion for connecting the door portion with the main body and for providing a pivot around which the door portion rotates when the door portion opens under a force of an expanding air bag. The main body is made of thermoplastic resin, and the cover portion is made of thermoplastic elastomer. Because they are capable of thermally fusing with each other, the main body and the cover portion can be integrally formed.

Abstract: An air bag door construction in which the air bag develops smoothly and securely, the skin can be easily produced. The skin is formed by a mold including an endless and annular wall provided on a molding surface to be inclined relative to the molding surface. A groove portion of the skin formed by the wall is cut at a bottom portion to separate the skin into a general portion and a door portion which are made flush with each other. When the surfaces of the general portion and the door portion are flush the gap between the general portion and the door portion can be narrowed, and gap on the surface is narrowed. When the skin is disposed in the mold for foam forming, the skin can position the general portion and the door portion in the desired position easily, and will not scatter a skin chip in the development of the air bag.

Abstract: The present invention intends to provide an air bag door construction in which the air bag develops smoothly and securely, the skin can be easily produced with small man-hour, and which is excellent in the surface appearance.

Abstract: A method for forming tear lines in the rear side of an automobile interior article having a cover portion being developed from which an airbag inflates. When either an automobile interior article body having an integrally molded surface portion or an automobile interior article surface portion is to be molded, the mold is opened after tear line forming projections are moved forward and backward with the mold closed. Thus, the tear lines can be formed at the molding time without any visible extrusion marks of the tear line forming projections on the front surface side (the design face).

Abstract: An instrument panel is provided with an upper panel of a synthetic resin disposed on the front side, and a core panel of a synthetic resin retentive of shape and connected to the rear side of the upper panel. The core panel has a casing portion which has an opening portion opened in an air bag-protruding direction and which receives a folded air bag of a passenger seat air bag unit and an inflator for supplying an inflating gas to the air bag. The upper panel has door portions which cover the casing portion and which are pressed and opened by the air bag when the air bag is inflated.

Abstract: An instrument panel is formed so that a facing layer constituted by three layers consisting of a skin layer, a foam layer and a barrier layer is disposed on the front surface side of a base and a rupture presumptive portion is disposed in a region for covering a folded air bag so that the rupture presumptive portion is opened so as to enable the air bag to protrude when the air bag is unfolded and inflated. The rupture presumptive portion is formed so that cutdown portions are formed so as to extend from the back surface side of the base to the barrier layer along the rupture presumptive portion. A large number of holes are provided at least in the skin layer so as to cover only the rupture presumptive portion and its vicinity.

Abstract: An automobile interior member which is represented by an instrument panel and to which an air bag device is to be assembled, is constituted by a main body portion and an air bag cover portion, the main body portion and the air bag cover portion being formed in a manner so that the main body portion is primarily molded (injection-molded) out of first thermoplastic resin material, and the air bag cover portion is secondarily molded (injection-molded) so as to be lapped with the main body portion on the back surface side. The second thermoplastic resin is oriented in a direction along a tear line (edges of rotational lid portions) of the lid portions (door portions) in the air bag cover portion so that the air bag cover portion is secondarily molded.

Abstract: An air bag cover having a surface sheet including a TPE layer (decorative layer) on the surface side is provided. A surface sheet with the breaking elongation adjusted by containing a filler in a TPE material for forming the TPE layer, is used. Thereby, the breaking rapidity at a tear line groove formation portion is improved.

Abstract: A car interior part, to which an air bag device can be assembled, includes an interior part main body portion and a cover portion for an air bag. In the periphery of the back surface of the cover portion, there is formed an angular shaped mounting wall which can be connected to the air bag device. The mold releasing direction of the interior part main body portion is set as a direction that crosses the developing direction of an air bag. At least one of front and rear mounting walls formed in the mounting wall is or are formed in the same direction as the mold releasing direction of the interior part main body portion. In the portion of the rear mounting wall that is situated upwardly of the mounting portion of the rear mounting wall, there is formed an integral hinge portion. The mounting portion of the rear mounting wall is fixed to the air bag device while it is folded at the integral hinge portion thereof.

Abstract: A car interior part, to which an air bag device can be assembled, comprises an interior part main body portion and a cover portion for an air bag. In the periphery of the back surface of the cover portion, there is formed an angular-shaped mounting wall which can be connected to the air bag device. The mold releasing direction of the interior part main body portion is set as a direction which crosses the developing direction of an air bag. At least one of front and rear mounting walls formed in the mounting wall is or are formed in the same direction as the mold releasing direction of the interior par main body portion and, in the portion of the rear mounting wall that is situated upwardly of the mounting portion of the rear mounting wall, there is formed an integral hinge portion, whereby the mounting portion of the rear mounting wall is fixed to the air bag device while it is folded at the integral hinge portion thereof.

Abstract: An interior finish member having a door suitable for an air bag comprises a main body and a cover portion. The main body surrounds the periphery of the cover portion, and the main body and the cover portion form a continuous surface. The cover portion covers a folded air bag of an air bag device. The cover portion comprises: a door portion which covers the folded air bag; a breakable portion defined by a recessed periphery of the door portion whose thickness is thinner than adjacent portions of the interior finish member so that it may be broken easily in deployment of the air bag; and a hinge portion for connecting the door portion with the main body and for providing a pivot around which the door portion rotates when the door portion opens under a force of an expanding air bag. The main body is made of thermoplastic resin, and the cover portion is made of thermoplastic elastomer. Because they are capable of thermally fusing with each other, the main body and the cover portion can be integrally formed.

Abstract: An air bag cover and manufacturing method thereof wherein the air bag cover comprises a core member which can be formed by injection molding, and a decorative sheet disposed on the surface of the core member. The decorative sheet includes at least two layers, an outer layer and a barrier layer disposed on a back side of the outer layer to protect the outer layer when the core member is injection molded. The core member is made of thermoplastic elastomer which can be thermally fused to the barrier layer. A breakable portion is provided in the barrier layer and core member.

Abstract: The air bag cover has a skin layer on the surface side of the cover and a core on the back surface side of the cover. The cover is disposed so as to cover an air bag. The air bag cover has a breakable portion which is broken when the air bag expands. The breakable portion is formed by providing a continuous or intermittent concave portion on the back surface side of the air bag cover. A fragile layer lower in tensile strength than the skin layer is fused to the back surface side of the skin layer.

Abstract: An interior finish member having a door suitable for an air bag comprises a main body and a cover portion. The main body surrounds the periphery of the cover portion, and the main body and the cover portion form a continuous surface. The cover portion covers a folded air bag of an air bag device. The cover portion comprises: a door portion which covers the folded air bag; a breakable portion defined by a recessed periphery of the door portion whose thickness is thinner than adjacent portions of the interior finish member so that it may be broken easily in deployment of the air bag; and a hinge portion for connecting the door portion with the main body and for providing a pivot around which the door portion rotates when the door portion opens under a force of an expanding air bag. The main body is made of thermoplastic resin, and the cover portion is made of thermoplastic elastomer. Because they are capable of thermally fusing with each other, the main body and the cover portion can be integrally formed.

Abstract: An air bag cover is made of thermoplastic resin and covers an air bag. A plurality of holes are provided with the air bag cover continuously and a breakable portion is provided which severs upon the inflation of the air bag. The surface side of the breakable portion is processed by a heating process, so that protrusions which partially plug the holes are formed on the inner circumferential surface of the holes on the surface side.

Abstract: A car interior finish member where a body portion and a cover portion are integrally molded in a shape retaining thermoplastic resin. The cover portion has a hinge portion and a breakable seam which form an air bag developing port when an air bag is operated. A design sheet is molded integrally with the cover portion and has at least an outer skin layer and a barrier layer. The barrier layer is formed of a material thermally fusible with the thermoplastic resin of the body and cover portions. The hinge portion and breakable seam are formed variously by molding of the cover portion and by appropriate notching up to and through the barrier layer of the design sheet.

Abstract: An air bag cover and manufacturing method thereof wherein the air bag cover comprises a core member which can be formed by injection molding, and a decorative sheet disposed on the surface of the core member. The decorative sheet includes at least two layers, an outer layer and a barrier layer disposed on a back side of the outer layer to protect the outer layer when the core member is injection molded. The core member is made of thermoplastic elastomer which can be thermally fused to the barrier layer. A breakable portion is provided in the barrier layer and core member.