JP3194263U - Pollution prevention sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet for a pollution control film having high workability while maintaining the flexibility of the pollution prevention film and having excellent wear resistance. The present pollution prevention film sheet is a pollution prevention film sheet 1 formed by weaving curtain fibers vertically and horizontally, and weaves high-strength fibers 4 in curtain fibers 3 vertically and horizontally at a fixed distance D. Thus, a high-strength fiber portion that surrounds the curtain fiber 3 in a rectangular shape is formed. As the high-strength fiber, an ultra high molecular weight polyethylene fiber is preferably used. [Selection] Figure 1

Description

  The present invention relates to a sheet for a pollution control film used for preventing water pollution of the surrounding environment in a sea area, a river, a lake or the like.

  For example, in order to prevent water pollution in the surrounding environment of a civil engineering construction site, a pollution prevention film has been conventionally installed. Anti-pollution membranes have a float-preventing membrane sheet that hangs down in the form of a skirt in the water. And used together with a weight for applying tension to the antifouling film sheet.

  And the sheet | seat for pollution prevention films | membranes mainly uses the woven / knitted fabric which consists of synthetic fibers, such as polyester, as a main material. When the installation site is a marine area, various damage factors such as tide fullness, waves, contact with reefs and various organisms act on the pollution control film sheet.

  If even a part of the sheet for antifouling film breaks, it will leak the pollutant around it, so it must be constructed so that it can withstand the damaged elements and prevent the leaking of pollutant, and has high wear resistance. Sex is required.

  In order to impart high wear resistance to the anti-fouling film sheet, the following conventional techniques have been implemented or studied.

  First, there is one in which a sheet for a pollution control film is constituted by curtain fibers made of polyester fibers and acrylic fibers, and a lattice-like protective material is arranged on both outer surfaces thereof.

  However, when this is done, reefs are easily caught in the lattice mesh, and the float may be submerged. When the float is submerged, leakage of pollutants occurs near the surface of the water, and it does not function as a pollution control film. In addition, since the protective material can hardly be deformed, the entire pollution prevention film sandwiching the curtain fiber between the front and rear protection materials is insufficient in flexibility, and when working to wind up or fold the pollution prevention film, work Efficiency tends to be poor.

  Secondly, there is a type in which a film made of curtain fibers is coated with a rubber layer instead of a lattice-like protective material.

However, if it does in this way, manufacturing cost will become 2 times or several times. Furthermore, if the rubber layer is thin, it may be damaged due to wear when it is used repeatedly. If the rubber layer is thick, not only will the weight of the pollution control film become unusually large, but also the flexibility will be poor, and when working to roll up or fold the pollution prevention film, work efficiency tends to be poor. There is a point.
Japanese Patent Laid-Open No. 10-324808 JP 2003-253658 A

  In view of the above, an object of the present invention is to provide a sheet for a pollution control film that maintains the flexibility of the pollution prevention film, has high workability, and is excellent in wear resistance.

  The sheet for antifouling film according to the first device is a sheet for antifouling film formed by weaving curtain fibers vertically and horizontally, and by weaving high strength fibers into the curtain fibers vertically and horizontally at a certain distance, A high-strength fiber portion surrounding the curtain fiber in a rectangular shape is formed.

  With this configuration, the anti-fouling film sheet is formed in a pattern in which the high-strength fiber portion surrounds the curtain fiber in a rectangular shape.

  Therefore, the flexibility of the pollution control film sheet of the present invention is almost the same as the flexibility of the pollution prevention film sheet composed only of curtain fibers. Moreover, it is equivalent to the sheet | seat for pollution prevention films comprised only with the fiber for curtains also in weight. Therefore, good workability is ensured in the work of folding or winding up the antifouling film.

  In addition, since the high-strength fiber part surrounds the rectangular curtain fiber, not only the strength of the anti-pollution film sheet is improved and the wear resistance is improved, but also the thickness of the anti-pollution film sheet is reinforced. The effect is played. Furthermore, even when there is a reef, there is little risk of the antifouling film sheet being caught on the reef.

  In addition to the first device, the sheet for antifouling film according to the second device has a fixed distance of 5 millimeters to 10 millimeters.

  With this configuration, since the anti-fouling film sheet is composed of small rectangular units with sides of 5 to 10 millimeters, the repair range does not extend unnecessarily, and repair work can be performed without waste.

  According to this invention, sufficient abrasion resistance can be provided to the sheet | seat for antifouling films by the high-strength fiber part which makes a rectangle.

  Further, since the sheet for anti-pollution film can be configured with high flexibility and light weight, good workability can be ensured in the work of folding or winding up the anti-pollution film, and the cost increase can be minimized.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a plan view of a pollution prevention film sheet according to an embodiment of the present invention.

  As shown in FIG. 1, ear threads 2 are arranged on both sides of the anti-pollution film sheet 1.

  In the region sandwiched between the ear threads 2, the curtain fibers 3 are basically woven vertically and horizontally. As the curtain fiber 3, polyester fiber or any combination thereof can be used.

  The high-strength fibers 4 are woven vertically and horizontally so as to surround a rectangular region (one side having a constant distance D) made of the curtain fibers 3, and a high-strength fiber portion surrounding the curtain fibers 3 in a rectangle is formed.

  As the high-strength fiber 4, an ultra high molecular weight polyethylene fiber or an aramid fiber is preferably used. In particular, ultrahigh molecular weight polyethylene fibers to which the trademark “Dyneema” or the trademark “Spectra” is assigned are suitable. This ultra high molecular weight polyethylene fiber has excellent wear resistance enough to be used in a bulletproof vest, has little deterioration, and is available at a relatively low cost.

  This ultra-high molecular weight polyethylene fiber is a synthetic resin that is usually made of polyethylene having a molecular weight of 2 to 300,000 and increased to 100 to 7 million, and is classified as a thermoplastic resin.

  This ultra high molecular weight polyethylene fiber has the following characteristics. That is, in a wide temperature range, it has a very high impact resistance that exceeds that of polycarbonate, has excellent wear resistance, and has a self-lubricating property. Specific gravity is as light as 0.92-0.94, water absorption is low, and dimensional stability is excellent.

  The constant distance D is preferably 5 to 10 millimeters. This is because sufficient wear resistance can be imparted to the anti-fouling film sheet with such a distribution, and the repair unit can be made into a small size that is practically easy to handle.

  In addition, the weaving method etc. should just follow a conventional method.

The top view of the sheet | seat for pollution prevention film in one embodiment of this invention

1 Sheet for antifouling film 2 Ear thread 3 Fiber for curtain 4 High-strength fiber D Fixed distance

Claims (3)

It is a sheet for a pollution control film formed by weaving curtain fibers vertically and horizontally,
A sheet for antifouling films, wherein a high-strength fiber portion surrounding the curtain fiber in a rectangular shape is formed by weaving high-strength fibers into the curtain fiber vertically and horizontally at a certain distance. The sheet for antifouling films according to claim 1, wherein the fixed distance is 5 to 10 millimeters. The anti-fouling film sheet according to claim 1 or 2, wherein the high-strength fibers are ultrahigh molecular weight polyethylene fibers or aramid fibers.

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