JPS602131A - Algae preventing yarn and molded article - 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 This invention relates to synthetic fiber yarns for nets, ropes, and various molded products that do not have these disadvantages. , fine metal powder such as tin is fixed in an embedded manner so that it does not easily fall off, but a portion of it is exposed from the surface of the garment, can generate metal ions in water, and is never exposed to water during normal work. The metal powder relates to metal powder-fixed fibers and molded products related to groove construction that do not fall off from adhered objects.

Fishing nets made of synthetic fibers, such as fixed nets and aquaculture nets, often have algae growing on them, but in the case of fixed nets, the mesh size of the net becomes thicker as the algae grows, compared to the initial size. The mesh size may become smaller from the original number 1 to the number 1. When this happens, the resistance of the ocean current increases, causing problems such as deformation of the net. In the case of aquaculture nets,
When the mesh becomes fine due to the growth of algae, the circulation of seawater becomes poor, resulting in a lack of dissolved oxygen, which impairs the growth of aquaculture fishing gear, and in some cases, causes the occurrence of dead fish, dead shellfish, and disease. Ta.

To do this, the algae attached to the nets were removed using a jet stream of water, or the aquaculture nets were brought to land and dried in the sun to remove algae, and the nets were soaked with an anti-algae agent Cζ and reused.

Algaecides are highly toxic chemicals that are mostly based on metal compounds or organic substances, and the more toxic they are, the more effective they are at preventing algae.
If it is too strong, it may hinder the growth of farmed fish and shellfish, or even cause death. In addition, during treatment with the algae-proofing agent, Iζ adhered to the skin of workers, and the algae-proofing agent came into contact with the skin of workers, causing damage to humans as well, which caused problems.

Therefore, as a measure against algae, a culture net made of zinc-coated wire mesh was used; this had good results with less algae growth, but it corroded in a relatively short period of time. The disadvantages were that it was heavy and expensive. By the way, zinc mesh and butterbur metal mesh.

The anti-algae effect is thought to be due to the action of metal ions, so when metal wires, such as copper wire, are twisted into inexpensive and light synthetic fibers such as polyethylene or polypropylene, the mixed yarn is used for algae prevention. , since the effect was recognized, the shortcomings of the method were further revealed as a result of the Cζ test. In other words, metal wire has less elongation than synthetic fibers, so when wave force or external force is applied, synthetic fibers have elongation and absorb the external force, but metal wire has no elongation, so When ζ force is applied, only the metal wire will break, but the synthetic fiber will not. At this time, the broken metal wire is twisted toward the outside of fζ due to the twist caused by the twist fζ and comes out. Since fish habitually swim along the net 1ζ, they come into contact with the protruding end 1ζ of the metal wire, resulting in a large number of fine scratches, which reduces the commercial value. Lately, algae had been removed by relying on toxic algae control treatment, which was time-consuming and dangerous, and cleaning with jet water. The present invention was obtained as a result of various researches to obtain something that does not have the above-mentioned drawbacks.
Heated metal powder is welded to the surface of a single filament or a connected filament (hereinafter referred to as filament), which destroys most of the physical properties of the filament, and uses the effect of metal ions to remove algae. This prevents the growth of algae. When exposed to the action of metal ions, algae grow and grow rapidly, and even if they do adhere, they are very easy to remove. This is because the algae are weakened by the action of metal ions. Or, even when the effect of metal ions is low, the occurrence of algae is several times lower than with regular products.As with conventional products, toxic algae preventive agents are dried on land and dried in the sun. Compared to 1, which requires processing, it is very labor-saving.
Once installed, if it is not moved for a long period of time, algae can be removed simply by washing with a stream of water, etc., and although it can be removed to its original appearance, it is very troublesome.

It was observed that almost no algae were generated in the net using the yarn of the present invention due to the action of metal ions.

The shape of the metal powder used in the present invention is flat, irregular,
Various shapes such as spherical shapes can be used, but those having a small surface area and being as lumpy or spherical as possible are preferable.

Next, an example of the method for manufacturing the anti-algae yarn of the present invention will be explained with reference to drawings, and the structure of the anti-algae yarn of the present invention will be explained. In FIG. (3)
is a chute, (4) is a burner, (5) is a flame, (6) is a cooling valve roller, (7) is an untreated yarn, and is wound with a core (8).
Then, it advances in the direction of the arrow at a speed of 10M to 200M per minute, undergoes the following processing, and is wound up into a winding tube (9) fζ.

Now, the metal powder (2) is stored in the hopper (1) and fed in a constant quantity from the chute (3).

These metal powders are exposed to the flame (5) injected from the burner (4).
) causes rapid heating.

At this time, the metal powder (2) has a high specific gravity of 8.92 for copper, 7.14 for zinc, and 7.28 for tin, but the specific gravity of the polypropylene yarn is 0.911, and that of high-density polyethylene is 0.9.
Compared to 6 and metal powder (2) 1ζ, the density is 8 to 9 times lower,
Heat conduction is poor, and even if the metal powder (2) is heated by the flame (5), the heated metal powder (2) falls onto the slightly softened surface of the raw thread (7), causing the raw material to fall. Thread surface <7'f
is locally melted only at the part where it comes into contact with the heated metal powder (25), and the metal powder slightly immerses into the fiber.When the raw yarn moves further and reaches the next cooling valve μ-ra (6), , the roller pushes the metal powder (2) onto the surface (7) of the yarn;
At the same time, it serves to smooth the surface.

Figure 2 is an enlarged view of the raw yarn (7), and the surface tζ metal powder (2
) are infiltrated in spots. More about the state of infiltration fζ
To explain, the infiltrated metal powder (2) at the A-A cross section in FIG. 2 (FIG. 8) 1ζ is slightly exposed from the surface (7) of the yarn. Initially, when the raw yarn (7) fell fζ, the heat held by the heated metal powder (2) and the roll (
When pushed into the raw thread (7) by the force of 6), the melted raw thread part (7) near the infiltrated metal powder (2) acts as an adhesive, and this part The molecular orientation of the thread (7) is disturbed. In addition, since the metal powder (2) has an almost circular shape, it melts the surface of the yarn due to heat, and when it immerses itself, a raised area is created around it, but in this state, the cooling press roller (6)
In order to press the metal powder with The inside of the yarn body (7) is wrapped in fζ.Therefore, even if external force such as slight twisting or rubbing is applied, it will not fall off from the yarn body.In addition, when the molten resin cools, it will shrink. Therefore, the metal powder (2) is wrapped with even stronger force and is prevented from falling out.

In addition, since the raw yarn (7) is a filament spun by a normal method and oriented through a drawing process, a part of the surface (71) is infiltrated with heated metal powder (25) on the surface (i). Therefore, the particle size of fζ metal powder (2) is adjusted to prevent the physical property fζ of the raw thread from being significantly peeled off.
The diameter of 7) is limited to 1 to 100 mm, but from the viewpoint of anti-algae effect, a larger one is preferable. For example, the diameter of 400 denier high-density polyethylene yarn is 1.0.25 m.
/m, the particle size of the metal powder (2) is preferably from 80 microns to 50 microns and 2 microns. If too small a metal powder is used, it will quickly dissolve and disappear in seawater, and the ionic effect will also be lost. Even when infiltrated with metal powder having a diameter of 4, the strength of the yarn decreases by only about 15% compared to the original yarn.

Next, regarding the means for fixing the metal powder (tζ), first there is a method of heating the metal powder (2), but this method is different from the flame method shown in the figure (ζIn addition to high-frequency induction heating, the metal powder (2) is heated directly). 2) can be adopted.In this case, since the flame (5) does not directly hit the raw yarn (7), the raw yarn has the advantage that it is not subject to change due to heat.Also, the vinylidene chloride fiber In the case of fibers such as fibers and nylon fibers that can be made adhesive on the surface with a solvent or adhesive, metal powder can be fixed onto the raw yarn using Method 1, which adheres flat metal powder. can.

Resins that can be used in the present invention include thermoplastic resins such as high-density polyethylene, polypropylene, polyamide, and vinyl chloride-y'7. Any type of raw yarn can be used as long as it is spun and drawn. As the metal powder, metal powders of copper, zinc, tin, etc. and alloys thereof can be used.

The above 1 is an anti-algae yarn made by infiltrating or adhering metal powder to the surface of synthetic fibers, especially monofilaments, but the present invention is not limited to this.
In addition to being usable for continuous yarn, twisted yarn, ropes and nets fζ obtained from them, it can also be applied to thermoplastic synthetic resin molded products, such as floats, aquaculture cages, and boxes. Those whose surfaces are coated with synthetic resin can also be applied. Figure 4 shows the surface of the lobe infiltrated with 1ζ metal powder (2), and Figure 5 shows an example of a drip-proof float, with the lower half of the synthetic resin float body 0υ (n + ζ metal powder (
21 is infiltrated.

As mentioned above, the present invention prevents algae from adhering to fishing nets and fishing nets, and is extremely useful from an operational and economic standpoint.Even in its production, it does not require any costly equipment, so it is cost-effective. Although it is not very expensive, the benefits to fishermen are enormous.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing the manufacturing process of the anti-algae yarn of the present invention, FIG. 2 is an explanatory diagram showing the external appearance of the anti-algae yarn of the present invention, FIG. 3 is an enlarged sectional view of FIG. 2, and FIG. Algae prevention 2 Heated metal powder 2# Infiltrated metal powder 3 Chute 4 Burner 5 Flame 6 Cooling stretching roller 7 Raw yarn 7 Yarn surface 7'' Melted part of yarn 8 Core winding 9 Winder 1O protective rope 11 Float body 12 Float lower half

Claims (1)

[Claims] (1) Metal powder of metals such as copper, zinc, tin or various alloys of these metals is attached to the surface of thermoplastic synthetic resin fibers or molded products under heating, and the metal powder is The absorbed heat fζ locally melts the bonded part and melts the metal powder, and the molten resin around the metal powder cools and sticks to the adherend with the upper part of the metal powder exposed and does not fall off.・Anti-algae yarn (2) A patent claim in which the thermoplastic synthetic resin fiber is a monofilament, a connecting yarn, a twisted yarn, a net, a rope, etc. The anti-algae yarn (3) according to item 1, in which the thermoplastic synthetic resin molded product is fabric, film, bag,
The anti-algae molded product according to claim 1, which is a basket, a box, etc.