JPH1162414A - Manufacture of molded fiberboard and fittings - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate work at the time of bonding a molded fiberboard as a face material to core material, and prevent warping of the molded fiberboard used as the face material of fittings by forming ribbed grooves for preventing warping, at the peripheral edge part of the molded fiberboard. SOLUTION: A molded fiberboard 1A that is base material of a face material of fittings of flush structure such as a flush door or a sliding door is manufactured by forming material mainly composed of a mixture with a phenol resin added and mixed in wood fiber, into mat shape, hot pressing this mat by a molding machine and then curing it. Peripheral edge stile parts 2A, a center rail part 2B, a center stile part 2C and panel board parts 3 surrounded by the respective stile parts 2A-2C through decorative edge parts 4 of deep drawn embossed pattern are formed at the molded fiberboard 1A. In addition to the decorative edge parts 4, fine embossed patterns 5 of grained tone on the whole are formed on the surface, and ribbed grooves 6 of V-shape cross section are further formed at the outer periphery of the peripheral edge stile parts 2A. The molded fiberboard 1A is therefore prevented from being deformed after hot press molding by the ribbed grooves 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fiber molded plate used for, for example, a face material of a flash door and a method of manufacturing a fitting using the fiber molded plate.

[0002]

Background Art Conventionally, doors, sliding doors, and other fittings have been made of a thick plate obtained by cutting natural wood, but in recent years, in order to save wood resources, a flash having a thin plate bonded to both surfaces of a core has been used. A structural fitting is provided. Previously, in the fittings of the flash structure, the core material and the thin plate material were also used by cutting natural wood, but recently, wood scraps, thinned wood, old wood, etc. were chipped and defibrated. Using a fiber molded board manufactured by binding wood fibers with a synthetic resin such as phenolic resin and heat-pressing and curing into a predetermined shape as a face material, further saves wood resources and saves labor of craftsmen. Attempts have been made. The fiber molded plate has good moldability, and can easily apply an arbitrary uneven pattern such as a fine embossed pattern, a deep drawn embossed pattern and the like in one shot, so that the productivity is good, for example, as shown in FIG. Frame part (2), end plate part (3), decorative edge part (4)
It is useful for flash door surface materials (1) etc.
There is no need to attach the previous decorative edge (4) by post-processing,
The labor of processing by craftsmen can be saved.

[0003]

The above-mentioned fiber molded board is left to cure at room temperature after hot press molding, and the curing of the synthetic resin contained in the curing proceeds. However, immediately after the hot press molding, the fiber molded board is in a high temperature state. The thickness of the fiber molded plate after molding is relatively thin, about 2 to 4 mm, so that the center is centered on the dotted lines C ₁ -C ₁ and C ₂ -C ₂ , which are flat portions. Deformation such as warpage is likely to occur. When the fiber molded plate is deformed, the workability in bonding to the core material is deteriorated, and the fiber molded plate and the core material are displaced from each other, or cracks or cracks are generated when the deformation is corrected. This causes the product quality to deteriorate.

[0004]

According to the present invention, as a means for solving the above-mentioned conventional problems, there is provided a fiber molded plate (1A) in which a rib groove (6) for preventing warpage is formed in a peripheral portion, In addition, when a decorative sheet (8) is attached to the surface of the fiber molded plate (1A) to form a decorative fiber plate, and when the decorative fiber plate is bonded to both surfaces or one surface of the core material (7) to manufacture a fitting, Using the decorative fiberboard as a core material
Before and / or after bonding to (7), the fiber molded plate (1A)
The present invention provides a method of manufacturing a fitting which cuts off an ear from the inside to the outside.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to one embodiment shown in FIGS. 1 to 8. A fiber molded plate (1A) which is a base material of a face material of a fitting having a flash structure such as a flash door or a sliding door.
Is a press-forming machine comprising an upper mold (9) and a lower mold (10) as shown in FIG. It is manufactured by hot-pressing according to (11) and then curing. As shown in FIGS. 2 and 3, the fiber molded board (1A) has a peripheral frame (2A), a central horizontal frame (2B), and a central frame. A vertical frame portion (2C), and a mirror plate portion (3) surrounded by a decorative edge (4) having a deep drawing embossed pattern are formed on each of the frame portions (2A, 2B, 2C), and In addition to the decorative edge (4), which is the deep drawing embossed pattern described above, the wood grain fine embossed pattern as a whole
(5), and a rib groove (6) having a U-shaped cross section is formed on the outer periphery of the peripheral frame portion (2A). The fiber molded plate (1
In (A), deformation after hot press forming is prevented both in the vertical direction and in the horizontal direction by the rib effect of the rib groove (6).

Prior to the manufacture of a fitting, the fiber molded plate (1A) is provided with a rib groove along a dotted line a--a as shown in FIGS.
(6) is cut from the inside, and both ears in the longitudinal direction are cut off as shown in FIG. The fiber molded plate (1A) from which the both ears in the longitudinal direction were cut off was then subjected to a vacuum crimping device (1
Set in 2), the decorative sheet (8) is vacuum-pressed on the surface using an adhesive.

The decorative sheet (8) is non-breathable, for example, polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-propylene terpolymer, ethylene-vinyl acetate copolymer, polyvinyl chloride, polyvinylidene chloride, Polystyrene, polyvinyl acetate, fluorine resin, thermoplastic acrylic resin, thermoplastic polyester, thermoplastic polyamide, thermoplastic urethane resin, acrylonitrile-butadiene copolymer, styrene-butadiene copolymer, acrylonitrile-butadiene-styrene copolymer, etc. , And the surface of the sheet is provided with a pattern, coloring, embossed pattern and the like.

As shown in FIG. 5, the vacuum pressure bonding apparatus (12) includes a hollow lower plate (13) connected to a vacuum path (14), and a hollow lower plate (13).
The air-permeable porous layer (15) arranged on the upper side and the air bag on the lower side
(17) is attached to the upper plate (16), the fiber molded plate (1A) is set on the air-permeable porous layer (15), from above the decorative sheet (8) via an adhesive Stacking, vacuum suction through the hollow lower plate (13) and the air-permeable porous layer (15) by the vacuum path (14), and the air bag (17) of the upper plate (16) from above the decorative sheet (8). Press. When the decorative sheet (8) is vacuum-pressed to the fiber molded board (1A) in this manner, the decorative sheet (8) is decorated with a decorative embossed portion (4) on the surface of the fiber molded board (1A) and a fine embossed pattern.
(5) Adhere closely following the shape of etc.

The face material (1), which is a decorative fiberboard manufactured as described above, is adhered to both sides or one side of the core material (7) shown in FIG. 6 with an adhesive. This state is shown in FIG. After bonding the face material (1) to both sides of the core material (7) as shown in FIG. 7, the fiber molded plate (1A) of the face material (1) is dashed as shown by the dotted line in FIG. Cut along the inside of the rib groove (6) along b, and cut off both ears in the short direction. Thus, a fitting (9) as shown in FIG. 8 is manufactured.

In addition to the above-mentioned specific examples, the cutting of the ears of the fiber molded plate (1A) may be performed before or after the decorative sheet is bonded in both the longitudinal direction and the lateral direction, or the face material (1) may be attached to the core material (7). ) May be performed after bonding. Instead of bonding the decorative sheet, decorative coating may be applied directly to the fiber molded plate (1A). In this case, a transparent sheet may be adhered thereon for surface protection.

[0011]

According to the present invention, since the rib grooves are formed in the peripheral portion of the fiber molded plate to prevent warping in the vertical and horizontal directions, the work of bonding the fiber molded plate to the core material as a face material can be easily performed. As a result, the occurrence of displacement between the face material and the core material, and the occurrence of cracks and cracks are reliably prevented.

[Brief description of the drawings]

 1 to 8 show an embodiment of the present invention.

FIG. 1 is an explanatory view of a hot press process.

FIG. 2 is a perspective view of a fiber molded plate.

FIG. 3 is an enlarged sectional view taken along line AA in FIG. 2;

FIG. 4 is a perspective view showing a state in which both ears are cut off in a longitudinal direction.

FIG. 5 is an explanatory view of a decorative sheet bonding step.

FIG. 6 is a perspective view of a core material.

FIG. 7 is a cross-sectional view showing a state in which the face material is bonded to the front and back surfaces of the core material.

FIG. 8 is an explanatory view of a fitting.

FIG. 9 is an explanatory view of a conventional face material.

[Explanation of symbols]

 1 Face material (decorative fiber board) 1A Fiber molded board 2A Perimeter frame (frame) 2B Center horizontal frame (frame) 2C Center vertical frame (frame) 3 End plate 4 Decorative edge 5 Embossed pattern 6 Rib Groove 7 Core 8 Decorative sheet 9 Fitting 11 Press molding machine 12 Vacuum crimping machine

Claims (4)

[Claims] 1. A fiber molded plate having a rib groove formed in a peripheral portion thereof for preventing warpage. 2. The fiber molded plate according to claim 1, wherein the fiber molded plate has an embossed pattern. 3. A decorative fiberboard obtained by attaching a decorative sheet to the surface of the fiber-formed board according to claim 1 or 2 and bonding the decorative fiberboard to both sides or one side of the core material. A method for manufacturing a fitting, characterized in that an outer ear portion is cut off from the inside of a rib groove of a fiber molded plate before and / or after the decorative fiber plate is bonded to a core material. 4. The decorative sheet is a plastic sheet having a pattern and / or coloring and / or embossed pattern on its surface, and the decorative sheet is adhered to the fiber molded plate by vacuum pressing. Item 3. The method for manufacturing a fitting according to Item 3.