JPH06106664A - Interior base material - Google Patents

Abstract

PURPOSE:To enable low temp. molding not deteriorating environment and not generating the thermal deterioration of the material of corrugated cardboard by applying corrugated cardboard impregnated with a diallyl phthalate resin. CONSTITUTION:Corrugated cardboard consists of a core 2 and the liners 3 bonded to both surfaces of the core 2 and is impregnated with 30wt.% of a liquid diallyl phthalate containing 0.5wt.% of benzoyl peroxide. The corrugated cardboard 1 is molded into a ceiling base material 4 of a car under molding conditions such that temp. is 150 deg.C and pressure is 2-3kg/cm<2> and a molding time is 30-90sec and the prepolymer is polymerized and cured by molding. A skin material 5 composed of synthetic leather or a nonwoven fabric is bonded to the surface of the ceiling base material by an adhesive or a hot-melt sheet to produce a ceiling material 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base material mainly used for interior materials such as automobile ceiling materials, door trims and rear parcels.

[0002]

2. Description of the Related Art Conventionally, as this type of interior base material, a cardboard impregnated with a phenol resin has been used.

[0003]

However, in the above-mentioned conventional interior base material, the problem of deterioration of the environment due to the odor of the impregnated phenol resin, and the curing temperature of the phenol resin being high (about 200 ° C.), A high temperature hot press is required for forming, and such a high temperature press has problems such as thermal deterioration of the material of the cardboard and waste of energy.

[0004]

As a means for solving the above conventional problems, the present invention provides an interior base material (4) comprising a cardboard (1) impregnated with a diallyl phthalate resin.

In the present invention, the diallyl phthalate resin is impregnated into the cardboard as a liquid or powdery monomer or prepolymer. At this time, a radical initiator such as benzoyl peroxide, lauryl peroxide, cumene hydroperoxide, azobisisobutyronitrile, or azobisvaleronitrile is used as a curing agent for the monomer or prepolymer with respect to the monomer or prepolymer. Usually, about 0.01 to 5% by weight is added. Further, amine, aniline, ascorbic acid, etc. may be added as a promoter together with the above radical initiator.

In the present invention, the above-mentioned diallyl phthalate resin is impregnated into the entire cardboard, only the liner of the cardboard, or only the core of the cardboard. Further, the liner and the core may be impregnated with the diallyl phthalate resin to form the cardboard, or the cardboard may be formed and then impregnated with the diallyl phthalate resin. The diallyl phthalate resin is usually 10 to 50% by weight, preferably 20 to 40% by weight of the cardboard.
It is impregnated with about wt%.

[0007]

Since the diallyl phthalate resin is almost odorless and the curing temperature is about 150 ° C., the molding temperature can be set to a low temperature at which the material of the cardboard does not deteriorate due to heat.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the embodiments shown in FIGS. 1 to 3. The cardboard (1) is a core as shown in FIG.
It comprises (2) and a liner (3) adhered to both sides of the core (2), and is impregnated with 30% by weight of a liquid diallyl phthalate resin prepolymer in which 0.5% by weight of benzoyl peroxide is dissolved.

The cardboard (1) is heated by a press molding machine (7) as shown in FIG. 2 at a temperature of 150 ° C. and a pressure of 2 to 3 kg /.
It is molded on an automobile ceiling base material (4) under molding conditions of cm ² and molding time of 30 to 90 seconds, and the prepolymer is polymerized and cured by the above molding. A surface material (5) made of synthetic leather, non-woven fabric or the like is adhered to the surface of the ceiling base material (4) with an adhesive, a hot melt sheet or the like to produce a ceiling material (6).

In addition to the above-mentioned embodiment, in the present invention, as shown in FIG. 4, a cardboard (1A) having a liner (3) stretched only on one side of a core (2) may be used. The cardboard is usually made of paper, but the liner and / or core may be made of non-woven fabric if desired.

Further, since the cardboard has poor elongation, wrinkles or cracks may occur in the deep-drawn part, and when such wrinkles or cracks occur, they appear as irregularities on the surface of the ceiling material (6) and the appearance deteriorates. To do. In order to prevent this, as shown in FIG. 5, a material (8) whose thickness can be changed may be attached to at least the surface side of the cardboard (1). As the material, a non-woven fabric, a fiber material such as felt, a polyurethane foam sheet, a polyethylene foam sheet, a plastic foam sheet such as a polypropylene foam sheet, or the like is used.

[0012]

Therefore, according to the present invention, there is provided an interior base material which can be formed at a low temperature without deteriorating the environment and heat deterioration of the material of the cardboard.

[Brief description of drawings]

 1 to 3 show an embodiment of the present invention.

FIG. 1 Partial cross-sectional view of cardboard

[Figure 2] Molding state diagram

[Fig. 3] Perspective view of ceiling material

FIG. 4 is a partial sectional view of a cardboard box of another embodiment.

FIG. 5 is a partial sectional view of a cardboard box of still another embodiment.

[Explanation of symbols]

 1 Cardboard 4 Interior base material (ceiling base material)

Claims (1)

[Claims] 1. An interior base material comprising cardboard impregnated with a diallyl phthalate resin.