JP2001310006A - Track-and-field net - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a track-and-field net which suppresses the generation of mold and malodors. SOLUTION: This track-and-field net consists of polylactic acid fibers having antimicrobial properties of >=0 in sterilization activity value and antimicrobially finished synthetic fibers.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a land net used as an agricultural net, a sports net, a snow net, a slope protection net, a seawall suction prevention net, and the like.

[0002]

2. Description of the Related Art Conventionally, land nets made of general-purpose synthetic fibers such as polyethylene fibers, polypropylene fibers, polyester fibers, polyamide fibers or natural fibers such as hemp and cotton have been used. And, depending on the characteristics required for various uses, the fibers are properly used by taking advantage of the characteristics of each fiber. For example, in fields where weight reduction is required, polyethylene fibers or polypropylene fibers having a low specific gravity are used, and in fields where abrasion resistance is required, polyamide fibers are mainly used. These land-based nets are used for a specific period in most cases, and are stored in warehouses or the like during periods when they are not used. In most cases, the atmosphere during the storage period includes moisture and the like, and molds and fungi easily propagate. As described above, the conventional land-based net using general-purpose fibers has problems in that it does not have antibacterial properties, so that molds and the like are generated, and fungi are propagated to generate an odor.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and has as its object to provide an antibacterial land net that suppresses the occurrence of mold and fungi. .

[0004]

According to the present invention, there is provided a land net comprising a synthetic fiber having an antibacterial activity having a bactericidal activity value of 0 or more, and a synthetic fiber comprising the synthetic fiber. The gist is the above-mentioned land net which is a polylactic acid fiber.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. The land net of the present invention is made of synthetic fibers having antibacterial activity having a bactericidal activity value of 0 or more. The bactericidal activity value is a value evaluated based on the quantitative test of JIS L1092, and a negative bactericidal activity value means that the inoculated fungus proliferates. The synthetic fiber used for the land net of the present invention needs to have a bactericidal activity value of 0 or more.

In the present invention, if the synthetic fiber itself does not have an antibacterial activity having a bactericidal activity value of 0 or more, it is only necessary that the synthetic fiber be subjected to antibacterial processing and be laid. Specifically, polyethylene fibers, polypropylene fibers, polyester fibers, polyamide fibers, polyvinyl alcohol fibers, polyvinyl chloride fibers, polyvinylidene chloride fibers, polyvinylidene chloride fibers, polyacrylonitrile fibers, which do not have antibacterial properties, Aramid-based fibers and the like, organic compounds of carboxylic acid as antibacterial agents,
A compound to which an organic nitrogen-sulfur compound, a quaternary ammonium salt, or the like is added may be used. In this case, examples of the binder for providing the antibacterial agent include a polyurethane resin, an acrylic resin, a polyester resin, a polyamide resin, and a melamine resin.The binder is selected in consideration of the adhesiveness to the synthetic fibers. Good bye.

[0007] In the case of a synthetic fiber having a bactericidal activity value of 0 or more and having no antibacterial activity as described above, it is manufactured by incorporating the above-mentioned antibacterial agent at the time of its production, to thereby improve the antibacterial activity. You may have.

As the synthetic fiber used in the land net of the present invention, it is preferable that the synthetic fiber itself is made of a polymer having a bactericidal activity value of 0 or more and having antibacterial activity. Examples of such synthetic fibers having antibacterial properties include polylactic acid fibers. The polylactic acid fiber is a fiber made of a polymer obtained by polymerizing lactic acid or a dimer lactide thereof, and is made of either a homopolymer or a copolymer of an optical isomer D-form or L-form. Is also good. Since the polylactic acid itself has antibacterial properties, it does not need to be subjected to antibacterial processing.Because it undergoes hydrolysis and is biodegraded by microorganisms such as pacteria into substances existing in nature, it becomes unnecessary and is discarded. In this case, the fiber is decomposed by burying it in the soil or composting, so that it is an environmentally advantageous fiber.

The land net of the present invention can be obtained by using the above-mentioned synthetic fibers to form a net using a net-making machine, a Russell knitting machine or the like. Specifically, a method of making a net by a net making machine such as a knotless netting machine or a frog or netting machine, or a method of knitting a net by using the above synthetic fiber as a chain knitting yarn and an insertion yarn with a Russell knitting machine. No. The shape of the mesh of the land net of the present invention is not particularly limited, and may be square, hexagonal,
Diamonds and the like are typical examples.

[0010]

Next, the present invention will be described more specifically with reference to examples. The evaluation of the bactericidal activity value in Examples was carried out according to JI
This was performed based on the quantitative test of SL1092.

Example 1 A net having a square mesh having a side of 25 mm on a 9-gauge Russell knitting machine using 1670 dtex / 96f of polylactic acid fiber composed of D-polylactic acid for both the chain knitting yarn and the insertion yarn. And kneaded at 120 ° C. for 1 minute to obtain a land net of the present invention.

Example 2 Polyester fiber 1100 dtex subjected to antibacterial treatment (solid component adhesion: 3%) in which both the chain knitting yarn and the inserted yarn are tipped into an aqueous solution of the following formulation 1 and dried (100 ° C. × 30 seconds).
Was used to knit a net having a square mesh of 25 mm on a side with a 9-gauge Russell knitting machine, and heat-set at 120 ° C. for 1 minute to obtain a land net of the present invention. [Prescription 1]-Polyoxyethylene trimethylammonium chloride 20 g / liter-Sumitex resin M-3 3 g / liter (trimethylol melamine resin manufactured by Sumitomo Chemical Co., Ltd.)-Sumitex accelerator ACX 0.3 g / liter (Sumitomo Chemical Co., Ltd.) Organic amine salt catalyst)

Comparative Example 1 A rope was prepared in the same manner as in Example 2 except that the polyester fiber was not subjected to antibacterial treatment, and a rope of Comparative Example 1 was obtained. Table 1 also shows the evaluation results of the bactericidal activity values of the synthetic fibers used in the obtained ropes of Examples 1 and 2 and Comparative Example 1.

[0014]

[Table 1]

[0015] As shown in Table 1, Examples 1 and 2 are fibers having antibacterial properties. Even if the obtained rope is left in a warehouse maintained at 25 ° C and a humidity of 60% for one month, it has an offensive odor. Although no slimming occurred, in the rope of Comparative Example 1, slimming occurred in a portion in contact with the soil, resulting in an odor.

[0016]

According to the present invention, it is possible to provide a rope or a class which suppresses the generation of mold and odor. If a fiber made of polylactic acid is used, microorganisms such as pateria etc. undergo hydrolysis after hydrolysis. Since it is biodegraded into substances existing in soil, it becomes unnecessary and is buried in the soil when discarded, or is decomposed by composting, which is also environmentally advantageous.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) E01F 7/02 E01F 7/02 4L035 E02D 17/20 103 E02D 17/20 103A 4L048 // D01F 6/62 305 D01F 6/62 305Z F-term (reference) 2B024 AA02 DA06 DB04 2D001 PA01 PD11 2D044 DB01 4L002 AA07 AB02 AC00 CB02 EA00 FA06 4L033 AA07 AB06 AC10 BA16 BA86 4L035 EE11 EE20 FF01 FF02 4L048 A0020A42 DA00

Claims (2)

[Claims] 1. A land net comprising a synthetic fiber having an antibacterial activity having a bactericidal activity value of 0 or more. 2. The synthetic fiber is a polylactic acid fiber.
Land net described.