JPS606183A - Laver screen made of synthetic resin and its manufacture - Google Patents

Abstract

PURPOSE:To manufacture a laver screen made of a synthetic resin and having improved flexural regidity, by weaving plastic tubes in the form of MATSUBA weaving (a pattern of the bamboo screen weaving), and partially welding the plastic tubes at which the tubes are bound with the weaving yarn and contacted with each other. CONSTITUTION:For example, a screen is manufactured by weaving the tubes 1 made of a synthetic resin (preferably polypropylene resin or polystyrene resin) in the form of MATSUBA weaving. The tip 4 of an ultrasonic process in tool is pressed to a part of the screen at which the tubes 1 are bound with the weaving yarn 2 and brougnt into contact with each other, and the tubes 1 are welded together to obtain the objective laver screen having the welded part 3. USE:Suitable for the automatic laver drying apparatus, the spontaneous drying of a hand-made laver sheet, etc.

Description

[Detailed Description of the Invention] This invention relates to a synthetic resin seaweed tube and its manufacturing method, and more specifically to a seaweed tube with improved bending rigidity of a cage made of pine needle weave material and its manufacturing method. It is. The nori tubes used to dry raw seaweed have taken over the shape of nori tubes made of woven bamboo or reeds, and in recent years, the use of synthetic resin Nutro-shaped or rod-shaped extruded materials woven with thread has become common. It has become. In recent years, seaweed dryers have become popular, and when a large number of seaweed tubes are used by turning them over, it is often required to improve the bending rigidity of the seaweed tubes. In other words, there is a process of feeding the nori tube into the nori straining frame without using a straining frame, and after straining the nori, the nori is placed in the straining frame!
The bending rigidity of the nori tube has been improved especially in the process of attaching a screen or placing it on a mounting table for drying in the sun, or when the nori generates contractile force and tries to bend the nori tube during drying. being asked for something.

Conventionally, in order to meet this demand, the cross section of the material was made into a nonagonal or pentagonal shape with parallel parts, and the material was woven with pine needles to provide resistance to the bending of the nori tube in the part surrounded by the yarn for knitting. It is being done.

The object of the present invention is to further improve the bending rigidity of the seaweed tube woven into the pine needle weave described above.

The synthetic resin materials used in the present invention include straw-shaped bodies, solid rod-shaped bodies, and foamed bodies made by extruding thermoplastic synthetic resins such as polyolefin resins and polystyrene resins such as polypropylene resins and polyethylene resins. ,
For example, one having a thickness of about 1.5 to 2.5 mm can be used. The material may have an irregular cross-sectional shape such as a circle, an ellipse, or a polygon. Among these, straw-shaped bodies and solid rod-shaped bodies made of polypropylene resin or polystyrene resin are preferable from the viewpoint of rigidity, and polygons or circular arcs whose external cross-sections have parallel sides are preferable because they can increase the area of the fused part. A shape connected with a straight line is a good size. The materials used for this material contain various additives such as talc and other inorganic fillers and fibrous fillers to improve rigidity and heat resistance, as well as pigments, processing aids, stabilizers, etc. as necessary. can do.

Nori'R, which uses materials made of polyolefin resins and polystyrene resins, is generally subjected to surface treatment to improve its poor adhesion to seaweed, and the present invention also uses seaweed treatment. It is possible to manufacture seaweed cages by applying Surface treatment methods include chemical treatment using chemicals such as oxidation treatment with ozone or potassium dichromate/sulfuric acid mixture, primer treatment by coating with chlorinated polyethylene and/or chlorinated polypropylene, etc.; flame treatment, electric discharge treatment, Physical and mechanical treatments such as UV treatment, ionizing radiation treatment, powder dusting and/or fiber blending, abrasion treatment, etc. can be used. When knitting and weaving materials into a pine needle weave, it is possible to knit and weave a single type of material or a mixture of two or more materials that differ in surface adhesion to seaweed due to their cross-sectional shape, surface treatment, etc. .

The threads used for knitting and weaving can be natural fibers such as cotton, or synthetic fibers such as polyester or vinylon, and can be fixed by applying adhesive at the tip in the same way as conventional seaweed cages.

A resonant horn (including cone) is used as an ultrasonic processing tool when the ultrasonic processing tool comes into contact with the part of the screen where the materials are in close contact with each other to form a fused part of the material. A general coupler that propagates the vibration of a vibrator can be used. If the pressing surface of the ultrasonic processing tool is pressed against the tip of the screen, the thread may sink into the material or melt and break, so the pressing surface of the tool should be pressed at a position that is out of alignment with the tip of the screen. is preferred. The shape of the tip tool (repression surface) of the ultrasonic machining tool may be a flat surface, a cylindrical surface, a U-shaped groove, a V-shaped shape, or the like. The process of fusing materials by ultra-high wave processing is carried out at any stage: before weaving the bar and applying adhesive to the tip, before volatilizing the adhesive solvent, and after volatilizing the adhesive solvent. can also be selected.

・An example of how to use an ultrasonic machining tool is to press the pressing surface against a cage, and then move it apart intermittently in the lateral direction to press the next pressing part. A method of arranging and using multiple items in parallel can be shown. In addition, machining speed can be increased by arranging the tools in tandem.

The seaweed cage obtained by the present invention is constructed as described above. When a force is applied to the seaweed cage in the direction in which the materials are adjacent to each other, the bending is resisted by the torsional stress of the material. It can have greater bending rigidity than seaweed cages made of woven and woven seaweed. The seaweed cage obtained according to the present invention can be suitably used in automatic seaweed dryers, handmade natural drying of seaweed, cooking utensils, tableware, etc.

[Brief explanation of the drawing]

In the figure, 1 is a raw material, 2 is a knitting yarn, 3 is a fused part, and 4 is a tip of an ultrasonic processing tool. that's all

Claims (2)

[Claims] (1) A seaweed tube made of synthetic resin, which is made by knitting a material made of synthetic resin in a pine needle weave, and is characterized in that the part where the material is closely attached to the weave by the weaving thread is a fused part. (2) A synthetic resin material is knitted into a pine needle weave to obtain a screen, and an ultrasonic processing tool is applied to the parts where the materials are in close contact with each other due to the weaving threads of the limb tubes to cut the parts where the materials are fused. A method for manufacturing a synthetic resin seaweed tube, characterized by forming a seaweed tube.