JPH067236A - Plastic half-split chopsticks - Google Patents

Abstract

PURPOSE:To joint a part of the end separably to increase the productive efficiency by simultaneously extruding to mold a pair of bars made of synthetic resin as a raw material and by the mutual joint due to swelling under the half-molton condition right after the extrusion. CONSTITUTION:A pair of bars 1, 1' having a square or circular lateral section made of synthetic resin, a thermoplastic resin like polystyrene for instance, as a raw material are simultaneously and parallelly extruded for their molding. The mutual opposite faces 2, 2' are jointed to each other by the span as long as 1-5cm as a continuous unit 3 as the swelling of the synthetic resin under the half-molton condition right after the extrusion. Coarse faces 4, 4' with stripes are molded in the longitudinal direction at the same time for prevention of slip. The joint 3 is divided on use. In this way, half-slip chopsticks having the same shape and material feeling as wooden ones can be made efficiently and inexpensively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to resin-made disposable chopsticks used particularly for meals.

[0002]

2. Description of the Related Art Heretofore, a disposable chopstick made of a resin of this kind is generally constituted by a pair of separate rod-like bodies (11) (11 ') which are separated beforehand as shown in FIG. It was

[0003]

However, in such a conventional product, the rod-shaped bodies (11) (11 ') separated in advance cause a troublesome handling after manufacturing, and As a product, there is a tendency to lack the feeling of wood material, and at the time of production, there was a problem that the production efficiency was inevitably reduced due to the injection molding of individual rod-shaped bodies, and the product became expensive. .

The present invention has been made in view of the above-mentioned problems of conventional products, and makes it easy to handle the product after manufacturing, has an appearance very similar to that of a wooden material, and is also suitable for manufacturing. It is an object of the present invention to provide a resin-made disposable chopstick that can be manufactured at a low cost with significantly improved production efficiency.

[0005]

According to the present invention, in order to achieve the above object, a pair of rod-shaped members made of a synthetic resin material are formed on a pair of opposing surfaces near one end immediately after the co-extrusion molding of the rod-shaped members in parallel. It is a gist of the resin disposable chopsticks that can be divided into one piece by being integrally connected to each other by the mutual joining due to the bulge under the semi-molten state. It is configured by providing a rough surface.

[0006]

Since the present invention is constructed as described above, the bulging of the synthetic resin material due to the parallel extrusion molding and the pulling speed of the take-up machine in the extruding device can be adjusted so as to be integrally connected. In connection with the above, handling of the product after manufacturing is simplified, and a shape and texture similar to wooden disposable chopsticks can be obtained, and at the time of manufacturing, a pair of rod-shaped bodies can be formed by one extrusion molding. Therefore, the production efficiency can be remarkably improved and the manufacturing cost can be reduced.

[0007]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a side view of the resin disposable chopsticks of the present invention, FIG. 2 is a sectional view taken along the line A--A of FIG. 2 is a view corresponding to FIG. 2 of the other embodiment, and (1) and (1 ′) are a pair of rod-shaped members made of a thermoplastic synthetic resin such as polystyrene resin having a rectangular cross section or a circular cross section. The extrusion is performed in parallel at the same time by using dies arranged side by side while maintaining a minute interval (for example, 2 to 15 mm) at the tip of the. Then, as the swelling of the synthetic resin material under the semi-molten state immediately after the extrusion molding, the surfaces facing each other (2)
Position (2 ') on the holding side near one end and set the desired length (1
Approximately 5 cm) and are integrally connected (3) to be constructed so that the connection (3) can be divided during use. (4) (4 ') is a rod (1) (1') if necessary
Is a strip-shaped rough surface provided along the longitudinal direction of each of the peripheral surfaces, can be formed simultaneously with the extrusion molding, and has a slip preventing function during use.

[0008] In addition, a minute interval between the above-mentioned dies at the time of production, a take-up speed of a take-up machine involved in connection (3), and an addition amount and kind of a small amount of a blowing agent to a synthetic resin material which is added as necessary. Etc. are appropriately selected in consideration of the cross-sectional shape including the thickness formed by the rod-shaped bodies (1) (1 ') or the mutual bonding degree at the facing surfaces (2) (2'), etc. Furthermore, the taper shape can be obtained at the tip by slightly accelerating the take-up speed of the take-up machine toward the tip side of the rod-shaped bodies (1), (1 ').

[0009]

As described above, the resin-made disposable chopsticks according to the present invention are connected integrally with each other as the rods (1) and (1 ') are bulged under a semi-molten state immediately after that by parallel coextrusion molding. Since it is configured in relation to the manufacturing that was worn (3), the product after manufacturing can be handled easily, and the shape and texture can be obtained close to wooden disposable chopsticks. Therefore, the resin-made disposable chopsticks are extremely useful because the production efficiency during the production can be remarkably improved and the production cost can be reduced.

[Brief description of drawings]

FIG. 1 is a side view of a resin disposable chopstick according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along line AA-A in FIG.

FIG. 3 is a view corresponding to FIG. 2 of the same as another embodiment.

FIG. 4 is a side view of a conventional resin-made disposable chopsticks.

[Explanation of symbols]

 1, 1'bar-shaped body 2, 2'opposing surface 3 continuous attachment 4, 4'rough surface

Claims (2)

[Claims] 1. A pair of rod-shaped bodies (1) (1 ') made of a synthetic resin material, which have opposing surfaces (2) (2') near one end immediately after the co-extrusion molding of the rod-shaped bodies in parallel. The resin-made disposable chopsticks, characterized in that the resin-made chopsticks are configured so that they can be divided by being integrally connected (3) by being joined together due to the bulge under the semi-molten state. 2. The resin-made disposable chopsticks according to claim 1, wherein the rod-shaped body (1) (1 ') has a striped rough surface (4) (4') along the longitudinal direction on the peripheral surface thereof.