JPS5934350B2 - Seaweed "a" - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seaweed cage, and more specifically, a synthetic resin with good affinity for seaweed and a synthetic resin with poor affinity are used to form a seaweed cage on the surface of a seaweed cage or seaweed body. The present invention relates to a seaweed cage formed by integrally molding the above two or more synthetic resins by co-extrusion inside a die or outside a die.

A seaweed cage is formed from a plate-shaped chopstick or by weaving a stick-shaped rod, and synthetic resin is replacing natural materials such as reed, reed, and bamboo as the material for these rod-shaped rods. It is becoming.

However, unlike natural materials, synthetic resin materials have various problems when used as is, and have not been put to practical use.

For example, resins that have a strong affinity with seaweed (hereinafter referred to as affinity resins) such as nylon, polyester, and polyacrylonitrile.

) is weak and difficult to put to practical use, and it is difficult to put it into practical use, and it is difficult to use it in practical applications. Spraying the solution onto the surface of the material (Japanese Patent Application Laid-open No. 1987-
124270) or brush painting (Special Publication No. 51-14
No. 596) has an affinity for adapting to seaweed of various properties, but it is easily soiled by dried seaweed, and as the number of times it is used increases, its adhesion to seaweed becomes stronger, making it difficult to remove dried seaweed. It has the disadvantage that it causes tears and chips when peeled off, and it is difficult to remove stains such as Guzu nori, and this stain adversely affects the product when the next time the sheet nori is manufactured.

In addition, dipping, spraying, brushing, etc. have the problem that the affinity becomes uneven due to changes in the resin concentration in the hydrophilic resin solution, fluctuations in the amount of coating, etc., and that the quality of the product varies.

On the other hand, resins such as polystyrene and polypropylene that have weak or no affinity with seaweed (hereinafter referred to as non-affinity resins).

) is strong and practical, but it has extremely poor affinity with seaweed, so improvements such as applying various compatibility treatments to the surface of seaweed cages made from this resin are required.

However, even with such improvements, there were advantages and disadvantages, and the results were not satisfactory.

In other words, it is difficult to set appropriate treatment conditions for oxidation treatments such as corona discharge treatment and mixed acid contact.If the treatment is too strong, it will be difficult to peel off the dried seaweed, and if the treatment is too weak, the dried seaweed will shrink and it will be difficult to obtain a product with a regular shape. In particular, when a material made of polyolefin or the like is subjected to corona discharge treatment, the problem arises that the affinity with seaweed deteriorates over time during use of the seaweed cage.

Alternatively, a method (
Japanese Patent Publication No. 44-29391) has problems with durability because the affinity-imparting agent peels off or wears away when the seaweed cage is washed or the dried seaweed is peeled off.

Furthermore, considering the properties of seaweed, the
As described in No. 14596, it is necessary to use a seaweed cage that has a well-balanced adhesiveness and removability adjusted according to the properties of the seaweed, and in reality, there are several types of seaweed with different adhesiveness. We use different seaweed cages.

For this reason, when producing seaweed cages, it is required to produce a wide variety of products in small quantities.

Therefore, the present inventors have developed a material that has a good balance between adhesion and removability with seaweed, has several types of compatibility with one type of seaweed cage material, is adaptable to any type of seaweed, and is durable. The present invention was completed after studying a method for efficiently producing a seaweed cage with a high quality of quality.

The present invention is a synthetic resin seaweed cage, in which two or more types of synthetic resins having different compatibility with seaweed are mixed on the surface of the chopstick rest or hugo body constituting the seaweed cage by integral molding inside a die or co-extruding outside the die. This is a seaweed cage formed by arranging them.

Examples of synthetic resins used for manufacturing the seaweed cage of the present invention include:
Compatible resins include polyamide, ionomer, polyester, polycarbonate, chlorinated polyolefin, polyacrylonitrile, ethylene/vinyl acetate copolymer, and polyvinyl alcohol.

Examples include acid-modified polyolefin and ethylene/vinyl alcohol copolymer.

In addition, non-compatible resins include polyolefin, polystyrene, polyvinyl chloride, and the like.

These synthetic resins contain inorganic fillers (calcium carbonate, magnesium carbonate, diatomaceous earth, dolomite, silica, pumice powder,
Kaolinite, clay.

mica, montmorillonite, CaSiO3, etc.), weather resistance agents, antistatic agents, heat resistant agents, reinforcing agents, surfactants,
A lubricant or the like can be added as appropriate, and the amount and method of addition may be determined according to a conventional method.

In the present invention, two or more of the above-mentioned synthetic resins having different affinities are integrally molded by co-extrusion to form a cylindrical body or cylindrical body, and the resins are arranged so as to coexist on the surface of the body.

The seaweed bodies that form the seaweed cage are solid or hollow rod-shaped bodies, and their outer cross-sectional shapes are circular or oval.

It is a polygon (triangle, quadrilateral, pentagon, etc.).

Further, it is preferable that the chopstick rest is a plate-shaped body with an uneven surface and holes for draining water.

The arrangement of two or more synthetic resins having different affinities with seaweed may be in the form of vertical stripes, two dots, short lines, etc., but is not limited to these.

Figures 2a''-'e and 3a and 3b are examples thereof.

As is clear from the drawings, the rib body is usually formed by using the non-affinity resin portion 4 as a matrix and having the affinity resin arranged in an appropriate shape on the surface thereof.

FIG. 4 shows a seaweed cage formed of sheet-like chopsticks, and FIG. 5 is a partially detailed view thereof.

It is desirable that the area ratio of the affinity resin portion to the entire surface of the chopstick rest or higo body is 5 to 70.

If this ratio is less than 5%, the adhesion to seaweed is insufficient,
When the number exceeds 70, the seaweed basin becomes easily soiled as in the case of full-coverage.

Moreover, when arranging in vertical stripes, the number of stripes should be 3 to 8.

In addition, the seaweed cage of the present invention can also be formed using a material whose surface has been subjected to activation treatment such as oxidation treatment.

The seaweed cage of the present invention has a good balance between adhesion and removability with seaweed, and the surface has different compatibility with seaweed (1).
Since it is composed of more than one type of synthetic resin, it can be widely applied to various types of seaweed with different properties, and has excellent workability.

Moreover, since the surface of the chopstick rest or the higo body is made up of a mixture of resins with different affinities to form the chopstick rest or the higo body, it does not peel off during nori processing work and has excellent durability.

In addition, the safety (environment) during the production of seaweed cages is extremely high.
Another feature of the present invention is that it can be manufactured extremely easily.

Next, examples of the present invention will be shown.

Examples 1 to 5 As the affinity resin, an ionomer resin (manufactured by Mitsui Polychemical Co., Ltd., trade name: Himilan 1652) or an ethylene-vinyl acetate copolymer (manufactured by Toyo Soda Kogyo Co., Ltd., trade name: Ultrasen UE630) was used. ) and polypropylene with a melt index MI of 3.5 g/10 min (manufactured by Idemitsu Petrochemical Co., Ltd., trade name: Idemitsu Polypro Y-400G) containing talc 20% by weight as an incompatible resin are shown in Table 1. A hollow body (outer diameter 2-1 mm) with a hexagonal cross section was formed by coextrusion using adhesion within a die at the ratio shown.

The ionomer resin was arranged in a vertical stripe pattern along the length at each vertex of the hexagonal cross section.

This seaweed body was cut to a specified length, and a seaweed cage of 29 CrrL x 27cm was made, which was used by seaweed fishing families in Chiba from the first picking of autumn buds until the end of the fishing season. Quality, difficulty in peeling, staining of the seaweed cage due to guzu seaweed, etc. were evaluated.

The results are shown in Table 1.

The number of times the seaweed cage was used was 150 times until the end of the fishing season, and 1000 seaweed cages were used each time.

Example 6 After coextrusion using the same raw materials as in Example 1, the entire surface of a hexagonal cross-section was subjected to corona discharge treatment.

Next, seaweed cages similar to those in Example 1 were made and evaluated in the same manner.

The results are shown in Table 1. Comparative Example 1 Polypropylene (Idemitsu Petrochemical Co., Ltd.
Co., Ltd., product name: Idemitsu Polypro ¥-400G) is molded into a hollow body (outer diameter 2.1 mm) with a hexagonal cross section, and after cutting this frame to a specified length, it is 29 cr IL x 27 cr horizontal.
An rL seaweed cage was made and evaluated in the same manner as in Example 1.

The results are shown in Table 1. Comparative Example 2 Using polypropylene (manufactured by Idemitsu Petrochemical Co., Ltd., trade name: Idemitsu Polypro Y-400G) containing 20% of talc used in Example 1 and having an MI of 3.5 g/10 minutes, a hexagonal cross-section was used. Molding a hollow body (outer diameter 2.1 mm),
This polypropylene is converted into chlorinated polypropylene (Sanyo Kokusaku Pulp)
After passing through a solution (viscosity: 100 cps, 25° C.) containing a mixture of Nis-Perclone 773H (trade name, manufactured by Co., Ltd.) and ethyl acetate, the sample was air-dried to form a chlorinated polypropylene thin film on the surface of the polypropylene body.

Hereinafter, seaweed cages were made and evaluated in the same manner as in Example 1.

The results are shown in Table 1.

Comparative Example 3 The bamboo bodies obtained in Comparative Examples 1 and 2 were alternately knitted and woven to make a seaweed cage in the same manner as in Example 1, and evaluated.

The results are shown in Table 1.

[Brief explanation of drawings]

Figure 1 is a schematic explanatory diagram of a seaweed cage, Figure 2 a''-e is a cross-sectional view of the higo body, Figure 3 a and b are partial sketches of the outer surface of the higo body, and Figure 4 is a chopstick rest. A schematic explanatory drawing, Fig. 5 is a partial detailed view of Fig. 4. 1... Thread body, 2... Knitting yarn, 3...
...Fundamentals, 4...Non-affinity resin part, 5...
...Affinity resin part, 6...Water removal 1,1

Claims (1)

[Scope of Claims] 1. In a synthetic resin material cage, two or more types of synthetic resins having different compatibility with seaweed are extruded inside or outside the die on the surface of the chopsticks or hugo bodies constituting the nori cage. A seaweed cage made of a single piece of mixed material by integral molding. 2. The seaweed cage according to claim 1, wherein the surface of the seaweed cage has been subjected to activation treatment such as oxidation treatment. 3. The seaweed cage according to claim 1, wherein the two or more types of synthetic resins having different affinities for seaweed are arranged in a vertical stripe pattern. 4. The seaweed cage according to claim 1, wherein the two or more types of synthetic resins having different affinities for seaweed are arranged in the form of dots or short lines. 5. The seaweed cage according to any one of claims 1 to 4, wherein the number of affinity resin portions on the surface of the chopsticks or lizard bodies is 5 to 70.