JPH0911324A - Fabrication hollow molded article manufacturing method and apparatus - Google Patents

Abstract

(57) [Abstract] [Purpose] A method for manufacturing a hollow-clad hollow-molded product, which can manufacture a hollow-clad hollow-molded product with high molding accuracy, without causing the decorative cloth loaded in the cavity of the mold to be displaced. Provide a device. [Structure] A mold 10 is used in which a fastening piece 15 in which elastic hook-shaped hairs 17 are densely planted is attached to a cavity 11 for forming a cloth-lined surface on the surface of a molded product. Mold 10 on the brushed side of the decorative cloth
Then, the decorative cloth 5 is loaded and held in the cavity 11 and blow molded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a panel-shaped hollow molded article for construction such as interior walls, partitions and doors of buildings,
The present invention relates to a manufacturing method for blow molding a hollow molded article for automobiles such as a headrest and an armrest, and other cloth-clad hollow molded article having a hollow structure made of plastic, and a manufacturing apparatus therefor.

[0002]

2. Description of the Related Art Conventionally, hollow molded articles of this type, especially,
The interior walls, partitions, doors, etc. of buildings are made of plastic panel-shaped hollow moldings. To give the panel a design effect, a decorative cloth was put on the surface of the panel. Things are also used.

As a method of blow molding a hollow plastic hollow body and a method of integrally molding a woven cloth on the surface of the hollow body at the time of blow molding, for example, Japanese Patent Laid-Open Publication No. Hei 3
The one described in Japanese Patent Publication No.-69335 is known.

[0004]

SUMMARY OF THE INVENTION Incidentally, Japanese Patent Application Laid-Open No.
In the method described in Japanese Patent No. 69335, a decorative cloth is preliminarily loaded in a cavity of a mold and blow molding is performed. However, in this method, the decorative cloth loaded in the cavity is apt to be displaced, which is a cause. It was pointed out that the incidence of defective molding is high.

Therefore, the present invention is intended to solve the above-mentioned problems in the method of preliminarily filling a cavity of a mold with a decorative cloth and performing blow molding. Moreover, it can be easily loaded, the decorative cloth loaded in the cavity of the mold does not shift its position, and the decorative cloth has no fastening marks on the surface of the molded product. An object of the present invention is to provide a method for producing a cloth-clad hollow molded product capable of manufacturing a hollow molded product, and an apparatus therefor.

[0006]

A method for producing a cloth-clad hollow molded article according to the present invention for achieving the above object is a method of blow molding a molded article having a hollow structure made of thermoplastic resin. Using a mold with a fastening piece in which elastic hook-shaped hairs are densely planted, is attached to the cavity that forms the cloth-clad surface on the surface, and the brushed side of the decorative cloth is pressed against the cavity that forms the cloth-clad surface of the mold. By fixing the cloth to the locking piece of the cavity, loading and holding the decorative cloth in the cavity and performing blow molding, the decorative cloth is attached to the cloth-covered surface of the molded product.

Further, the apparatus for producing a fabric-clad hollow molded product according to the present invention is a mold for blow molding a molded product having a hollow structure made of a thermoplastic, and a cavity for molding a fabric-clad surface on the surface of the molded product. , A fixing piece in which elastic hook-shaped hairs for fixing the decorative cloth are densely attached is attached.

[0008]

According to the manufacturing method and the apparatus therefor of the present invention, when the raised portion side of the decorative cloth is pressed against the cavity forming the cloth-clad surface of the mold, the fastening piece attached to the cavity is densely planted. Since the raised part side of the decorative cloth is fixed to the elastic hook-shaped hair body, the decorative cloth can be loaded into the cavity of the mold with high accuracy and easily. Since the decorative cloth loaded in the cavity of the mold is securely fixed to the elastic hook-shaped hair bodies in which the cavities are densely packed, not only before the blow molding but also due to the expansion movement of the parison during the blow molding It is possible to obtain a fabric-clad molded article with high accuracy.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an overall perspective view showing a panel constituting an inner wall or partition of a building as an example of a cloth-lined hollow molded article according to the present invention, and FIG. 2 is an enlarged sectional view taken along line AA in FIG. 3 is a partial cross-sectional view of a mold according to the present invention, and FIG. 4 is a partial cross-sectional view showing a state of a cloth-clad hollow molded article according to the present invention after blow molding.

In FIGS. 1 and 2, reference numeral 1 denotes a panel, which is made by blow molding a thermoplastic. The panel 1 has a hollow double wall structure,
Formed on the surface is a cloth-clad surface 2 that is lower than the peripheral portion toward the hollow portion, and at the boundary between the peripheral portion and the cloth-clad surface 2 is formed a groove portion 3 that is recessed toward the hollow portion. The edging portion 4 projects from the tension surface 2. This border 4
A decorative cloth 5 is attached to the upholstered surface 2 surrounded by, and the surface of the panel 1 forms a design surface. 6 a hollow part, 7 a base part of the decorative cloth 5, 8 a raised part thereof, 8 a
Is preferably a pile-like portion in the peripheral portion and is particularly in the form of pile. Reference numeral 9 denotes a peripheral concave portion of the upholstered surface 2.

The panel 1 according to the present invention is shown in FIGS.
It is manufactured by blow molding of thermoplastics, as shown in FIG. In this figure, one mold 10 which constitutes a pair of split molds includes a cavity 11 for forming a cloth-clad surface lower on the hollow portion side than the peripheral portion on the surface forming the design surface of the panel, and a peripheral edge. At the boundary between the portion and the upholstered surface, a cavity 12 for forming a groove recessed toward the hollow portion side and a cavity 13 for forming an edge portion projecting from the upholstered surface at the peripheral portion are provided. 14 is a parison.

A fastening piece 15 is attached to the cavity 11 for molding the cloth-covered surface of the die 10 constructed as described above. The fastening piece 15 is obtained by densely implanting elastic hook-shaped hairs 17 on a substrate 16. The substrate body 16 is a cloth, a metal, a plastic plate, or the like, and the elastic hook-shaped bristle body 17 is a fine hair-shaped member made of plastic, metal, or the like that retains appropriate elasticity, and has a hook-shaped tip. is there.

In the example shown in FIG. 3, a plurality of fastening pieces 15 are attached to the cavity 11 at appropriate intervals.
5 may extend over the entire surface of the cavity 11.

Further, as shown in FIG.
When attaching a plurality of fastening pieces 15 at appropriate intervals, if the hook-shaped bristle bodies 17 of the fastening pieces 15 are made different in direction from each other, the fastening holding state of the decorative cloth 5 is ensured.

In blow molding a fabric-clad hollow molded article,
To load the decorative cloth 5 into the cavity 11 of the mold 10,
The raised portion 8 side of the decorative cloth 5 is pressed against the cavity 11 of the mold 10, and the raised side 8 of the decorative cloth 5 is hooked hair body 1 of the fastening piece 15.
Hook 7 and fix.

Next, after the decorative cloth 5 is loaded into the cavity 11 of the mold 10, the pair of split molds 10 opened.
By arranging the parison 14 between them, clamping the mold, and introducing a pressure fluid into the parison 14, the parison 14 is molded into a panel having a shape along the cavity of the mold 10, and
The base portion 7 of the decorative cloth 5 loaded in one of the molds 10 is pressed against the parison 14 on the cloth tension surface, and the decorative cloth 5 is integrally attached to the molded product. Hook-shaped hair body 1 of the fastening piece 15
Since 7 has a hook-like bent end and has elasticity, hook-shaped hairs 17 are formed on the surface of the molded product to be blow-molded.
It is possible to obtain a molded product with high accuracy without the appearance of the mark.

[0017]

EFFECTS OF THE INVENTION According to the method and the apparatus for manufacturing a cloth-clad hollow molded product according to the present invention, the decorative cloth can be loaded into the cavity of the mold with high accuracy and easily.
The effect that the decorative cloth loaded in the cavity of the mold will not be displaced and that the decorative cloth has no fastening marks on the surface of the molded product, and a fabric-clad hollow molded product with high molding accuracy can be manufactured. Is obtained.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing an example of a cloth-clad hollow molded product according to the present invention.

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

FIG. 3 is a cross-sectional view of a part of a mold used for blow molding a fabric-clad hollow molded product according to the present invention.

FIG. 4 is a partial cross-sectional view showing a blow molding aspect of a cloth-clad hollow molded product according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 panel 2 cloth-lined surface 3 groove part 4 edging part 5 decorative cloth 6 hollow part 7 base part of decorative cloth 8 raised part 8a bristle part 9 peripheral recessed part 10 mold 11 cavity for forming cloth-lined surface 12 cavity for forming groove part 13 Cavity for molding edging portion 14 Paris 15 Fixing piece 16 Substrate body 17 Hook hair body

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location B29L 31:58

Claims (2)

[Claims] 1. A method of blow molding a molded product having a hollow structure made of a thermoplastic, wherein a fastening piece having an elastic hook-shaped bristle densely implanted is attached to a cavity for molding a cloth-lined surface on the surface of the molded product. Using the mold, press the raised side of the decorative cloth against the cavity that forms the cloth tension surface of the mold to fix the cloth to the locking piece of the cavity, load and hold the decorative cloth in the cavity, and blow mold A method for producing a cloth-clad hollow molded product, comprising the step of applying a decorative cloth to the cloth-clad surface of the molded product. 2. In a mold for blow molding a molded product of a hollow structure made of thermoplastics, an elastic hook-shaped hair body for fixing a decorative cloth is densely planted in a cavity for molding a cloth-covered surface on the surface of the molded product. An apparatus for manufacturing a fabric-clad hollow molded article, characterized in that the attached fastening piece is attached.