JPS5814735A - Manufacture of interior finish material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an interior material used as a rug or wall material, and more specifically, to a method for manufacturing an interior material without a base fabric, in which a sheet member is layered on a member made of corrugated fibers such as nonwoven fabric. It is.

For example, in a loop-shaped carpet, the surface of which is a corrugated member made of various fabrics, threads, etc., is bent into a continuous corrugated sheet, and the corrugated member is attached to the base fabric through an intermediate layer. It is made up of.

The corrugated member can be fixed to the base fabric by crimping the corrugated parts of the base fabric and the corrugated member using high frequency, by melting and welding the overlapping surfaces of the two by heating, or by bonding the corrugated surfaces with adhesive. It is being

However, all of the conventional methods require a separate base fabric, which increases material costs and requires complicated equipment such as high-frequency equipment, welding equipment, and adhesive coating equipment for bonding. There is also the problem that the cost is high.

Furthermore, since a single high-frequency connection applies pressure to the base fabric or the corrugated member, the finished shape of the product deteriorates and the product value decreases.

When welding by heating, since the melting temperatures of the base fabric and the corrugated member are different, thermal management is extremely difficult, and a connection with excellent strength cannot be obtained.

In other words, when the bent part of the corrugated member is heated by pressing it with a heating piece from the inside of this bent part, the parts where the temperature increases the most are at the corner positions on both sides, and when the joint surfaces are brought into a molten state suitable for welding, Since the corner position is fused, the temperature cannot be raised and good welding cannot be achieved.

Furthermore, the bonding method using adhesive has problems such as weak strength and a long time required for drying unless the adhesive penetrates into both the bonding surfaces sufficiently.

This invention was made to solve the drawbacks and intercondylar points of the conventional connection methods as described above, and aims to reduce manufacturing costs and equipment costs, and also eliminates the use of base fabric. It is an object of the present invention to provide a manufacturing method which provides a strong connection between a corrugated member and a sheet member.

The structure of the present invention is such that a sheet member that has just been molded in a molten state is stacked on one side of a corrugated member, and the corrugated member is melted by the heat possessed by the sheet member, so that the sheet member and the corrugated member are welded and integrated. This is what I did.

Hereinafter, the present invention will be explained based on embodiments shown in the accompanying drawings.

As shown in the figure, the corrugated member 1 is formed by continuously corrugating a sheet made of a thermofusible material such as a band-shaped nonwoven fabric made of synthetic resin fibers such as polyethylene, felt, various fabrics, and threads. has been done.

This corrugated member 1 is supplied to the outside of a group of 3 plates attached to the outer periphery of the endless chain 2 at regular intervals, and is pushed between each plate 3 at a fixed length by mechanical or air pressure. is formed into a continuous waveform,
Moreover, it is conveyed in the direction of arrow 4 in FIG. 1 with the waveform maintained.

During the conveyance of the corrugated member 1, a sheet member 5 is supplied onto the corrugated member 1, and this sheet member 5
It sequentially overlaps the upper curved part of.

The material of the sheet member 5 may be polyethylene, tar,
In addition to pitch, a mixture of these materials is used, and the molten material is extruded from the nozzle 6 to form a sheet, which is then immediately stacked on the corrugated member 1, and the contact portion of the corrugated member 1 is heated by the heat held by the sheet member 5. The corrugated member 1 and the sheet member 5 are welded □ by melting.

In this way, since the heat retained immediately after the sheet member 5 is melted is used to melt and bond the corrugated member 1, the material combination of the sheet member 5 and the corrugated member 1 is such that the sheet member is more suitable than the corrugated member. Select and use so that the melting temperature is high.

For example, when the sheet member 5 is made of a material that melts at 200°C, the corrugated member 1 is made of a material that melts at about 160 to 180°C.

When the molten sheet material material is extruded from the nozzle 6, the temperature decreases as it becomes a sheet, and the temperature reaches 180°C.
The position of the nozzle 6 is determined so that it comes into contact with the corrugated member 1 at many positions where the temperature drops to about .degree.

The sheet member 5 extruded from the nozzle 6 is continuously supplied onto the corrugated member 1 being conveyed, and when it comes into contact with the bent portion of the corrugated member 1, it melts the corrugated member 1 with its retained heat.

As described above, since the corrugated member 1 has a lower melting point than the sheet member 5, it is melted by the heat possessed by the sheet member 5 during hardening, and no separate heating device is required for melting.

The contact portion of the corrugated member 1 with the sheet member 5 is melted and integrated with the sheet member 5, and as the sheet member 5 hardens, this melted portion also solidifies, and the sheet member 5 and the corrugated member 1 are firmly connected. Ru.

The shape of the sheet member 5 may be maintained by a forming belt 7 during conveyance, and a single-sided loop interior material in which the sheet member 5 and the waveform member 1 whose waveform is maintained are integrated as shown in FIG. 2 is completed. .

As described above, according to the present invention, the sheet member immediately after molding is superimposed on one side of the corrugated member, and the contact portion of the corrugated member is melted by the heat possessed by the sheet member, so that the corrugated member and the sheet member are welded and integrated. As a result, it is now possible to weld corrugated members and sheet members without using any heating equipment or adhesives for welding, resulting in a significant reduction in welding costs and equipment costs. Moreover, since the use of base fabric can be omitted in the construction of the interior material, material costs can also be reduced.

In addition, since the corrugated member is melted by the heat retained in the sheet member, the connection portion between the sheet member and the corrugated member is melted and integrated, and a connection with excellent strength is obtained, and the shape of the connection portion does not change. You can get a product with a beautiful finish.

Furthermore, since the sheet member can be formed and connected to the corrugated member at the same time, manufacturing efficiency can be greatly improved.

[Brief explanation of the drawing]

FIG. 1 is a front view of an apparatus used in the manufacturing method according to the present invention, and FIG. 2 is an enlarged longitudinal cross-sectional view of an interior material. 1 is a corrugated member, 5 is a sheet member Patent applicant Yoshihiko Tadami Attorney Kama 1) Text 2 Figure 1 Figure 2

Claims (1)

[Claims] A sheet member immediately after forming is placed on one side of the corrugated member formed using a heat-melting fiber material so as to contact each bent portion on the negative side, and the heat held by the sheet member is used to cause the corrugated member to A method for producing an interior material, characterized by welding a corrugated member and a sheet member by melting their contact portions.