JPH1096151A - Resin coating of mesh woven or knitted fabric for engineering work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a resin film enough to guard ultraviolet light by coating of mesh woven or knitted fabric for civil engineering having a prescribed scale of mesh with a resin and retain tensile strength by forming a specific film laminate sheet and subjecting a film part to punching processing. SOLUTION: A thermoplastic resin film (thickness is preferably 0.5-10mm) 2 is attached along the both faces of mesh like woven or knitted fabric 1 using polyester, polypropylene, polyethylene, nylon and aramid fiber and pressure is applied thereto by a heat press machine or calender roll 5 and the thermoplastic resin film is melted and bonded to the mesh-like woven or knitted fabric 1 by heating to form a film laminated sheet 3 and the film part is punched and the mesh woven or knitted fabric for engineering works having scale of mesh from 2mm×2mm to 200mm×200mm in both of weft and warp is coated with a resin. Furthermore, tensile strength of mesh sheet 4 has 1-20tf/m in both of weft and warp.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for coating a mesh woven or knitted fabric used in civil engineering work with a resin.

[0002]

2. Description of the Related Art Conventionally, a meshing woven or knitted fabric used in civil engineering works is subjected to sealing or improving the hardness by immersing the meshed woven or knitted fabric in a resin dissolved in water or a solvent, and then squeezing with a rubber roll. In general, a heat treatment method was used.

[0003] However, in this processing method, the resin used is dissolved in water or a solvent.
A sufficient resin film could not be formed on the surface of the mesh woven or knitted fabric. Therefore, when the mesh-shaped woven or knitted fabric is used outdoors, there is a defect that the yarn strength is deteriorated by ultraviolet rays.

SUMMARY OF THE INVENTION An object of the present invention is to provide a mesh woven or knitted fabric capable of forming a resin film sufficient to guard ultraviolet rays on the surface of the mesh woven or knitted fabric in order to improve the above-mentioned drawbacks. An object of the present invention is to provide a resin coating method.

[0004]

In order to achieve the above object, a thermoplastic resin film having a lower melting point than the yarns constituting the mesh-shaped woven or knitted fabric is laminated from both sides of the mesh-shaped woven or knitted fabric, and then a grid-like structure is formed. It is an object of the present invention to provide a resin coating method characterized in that a resin film portion is punched by a gravure roll having a cutting blade embedded therein.

[0005] The laminating method is to heat a hot press machine or a calender roll surface temperature to a temperature lower than the melting temperature of the film while applying a film on both sides of a mesh-shaped woven or knitted fabric and applying pressure by a hot press machine or a calender roll. Do with.

[0006] When the adhesiveness between the yarn constituting the mesh-shaped woven or knitted fabric and the thermoplastic resin film is insufficient, an ionomer for obtaining a crosslinking effect is attached to the yarn to improve the adhesiveness of the yarn constituting the mesh-shaped woven or knitted fabric. Let it.

[0007] The film-laminated sheet is
Punching is performed by a gravure roll or a press machine in which a cutting blade of 2 mm to 200 mm x 200 mm is embedded.

When a sheet obtained by punching out a film portion of a film laminate sheet in a lattice shape is a mesh sheet,
The tensile strength of the mesh sheet depends on the adhesiveness of the yarn constituting the mesh-like woven or knitted fabric and the thermoplastic resin film to the yarn. If the adhesiveness is insufficient, the yarn will come off, and the predetermined tensile strength cannot be obtained.

The tensile strength of the mesh sheet is 1 t
f / m to 20 tf / m.

Hereinafter, the present invention will be described with reference to the accompanying drawings. FIGS. 1, 2 and 3 are explanatory views showing examples of the material of the present invention.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION A thermoplastic resin film having a lower melting point than a yarn constituting a mesh-shaped woven or knitted fabric made of synthetic fibers and containing carbon black is laminated on both sides of the mesh-shaped woven or knitted fabric, and then a grid-like resin is formed. The film portion is punched by a gravure roll having a cutting blade embedded therein to obtain a mesh sheet shown in FIG.

[0012]

The present invention will now be described in detail with reference to examples.

[0013]

Example 1 As shown in FIG. 1, 2500 mm wide woven knitted fabric 1 having a width of 2 m and a mesh size of 30 mm woven by entangled weaving using 13500 denier aramid fiber, and 2 mm in which carbon black was mixed in the lower layer. Rolling out the linear low density polyethylene resin film 2 of thickness,
Next, a pressure of 30 tf / width was applied between the calender roll 5 and the paper roll 6 heated to 120 ° C. to form a film laminate sheet in which fibers and resin were welded by heat and pressure. Further, a mesh sheet shown in FIG. 3 was obtained by passing a film laminated sheet between a rotating gravure roll 7 having a 24 mm square cutting blade embedded in the roller surface and a receiving roll and punching out the film portion.

[0014]

Example 2 135 impregnated with ionomer as shown in FIG.
2 mm thick linear low density polyethylene resin film 2 with carbon black mixed in the upper and lower layers of a mesh-shaped woven knitted fabric 1 having a width of 2 m and a mesh size of 30 mm woven by entangled weaving using 00 denier aramid fiber. Then, a pressure of 30 tf / width was applied between the calender roll 5 and the paper roll 6 heated to 120 ° C. to form a film laminate sheet in which the fiber and the resin were welded by heat and pressure. Further, a mesh sheet shown in FIG. 3 was obtained by passing a film laminate sheet between a rotating gravure roll 7 having a 24 mm square cutting blade embedded in the roller surface and a receiving roll and punching out the film portion.

[0015]

Example 3 As shown in FIG. 2, 2500 mm wide woven knitted fabric 1 having a width of 2 m and a mesh size of 30 mm woven by entangled weaving using 13500 denier aramid fiber, and 2 mm in which carbon black is mixed in the lower layer. Rolling out the linear low density polyethylene resin film 2 of thickness,
Next, the hot press plate of the press machine 8 is heated to 120 ° C.
A pressure of gf / cm 2 was applied to form a film laminate sheet in which fibers and resin were welded by heat and pressure. Furthermore, a mesh sheet was obtained by passing a film laminate sheet between a rotating gravure roll 7 having a 24 mm square cutting blade embedded in the roller surface and a receiving roll and punching out the film portion.

[0016]

EXAMPLE 4 135 impregnated with ionomer as shown in FIG.
2 mm thick linear low density polyethylene resin film 2 with carbon black mixed in the upper and lower layers of a mesh-shaped woven knitted fabric 1 having a width of 2 m and a mesh size of 30 mm woven by entangled weaving using 00 denier aramid fiber. Then, the hot press plate of the press machine 8 was heated to 120 ° C., and a pressure of 10 kgf / cm 2 was applied to form a film laminate sheet in which fibers and resin were welded by heat and pressure. Further, a mesh sheet was obtained by passing a film laminated sheet between a rotating gravure roll 7 having a 24 mm square cutting blade embedded in the roller surface and a receiving roll and punching out the film portion.

[0017] The tensile strength of the resin-coated material in each processing method was measured and compared. Table 1 shows the results.

[0018]

[Table 1]

[0019]

According to the resin coating of this embodiment, the coating resin concentration is 100% and the resin contains carbon black, so that the yarn surface of the mesh woven or knitted fabric is sufficiently protected from ultraviolet rays. Resin was able to adhere. In addition, the welding between the yarn and the thermoplastic resin could maintain a strength of 75% or more of the tensile strength of the mesh woven or knitted fabric.

According to the embodiment of the present invention, 9.62 t / m when the mesh interval of the mesh woven or knitted fabric is 30 mm.
Was obtained. By changing the yarn fineness and mesh interval of the mesh-shaped woven or knitted fabric, it is possible to maintain a tensile strength of 1 t / m to 20 t / m in both processes.

[0021]

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of Example 1 and Example 2.

FIG. 2 is a sectional view of a third embodiment and a fourth embodiment.

FIG. 3 is a perspective view of a mesh sheet obtained according to Example 1, Example 2, Example 3 or Example 4.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 mesh woven or knitted fabric 2 thermoplastic resin film 3 film laminate sheet 4 mesh sheet 5 calender roll 6 paper roll 7 gravure roll 8 hot press

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI E02D 3/00 D06M 17/00 Z

Claims (5)

[Claims] 1. A thermoplastic resin film is stretched on both sides of a mesh-shaped woven or knitted fabric, and a heat press machine or a calender roll is used to apply pressure and simultaneously heat the thermoplastic resin film and the mesh-shaped woven or knitted yarn to form a film. A resin coating method for a mesh woven or knitted fabric for civil engineering, wherein a mesh portion of 2 mm × 2 mm to 200 mm × 200 mm in both directions is obtained by punching a film portion after forming a laminate sheet. 2. The method according to claim 1, wherein polyester, polypropylene, polyethylene, nylon, and aramid fibers are used as the material of the yarn for the mesh woven or knitted fabric. 3. The tensile strength of the mesh sheet is 1 for both processes.
The resin coating method for a mesh woven or knitted fabric for civil engineering according to claim 1 or 2, wherein the resin coating has a tf / m of 20 tf / m to 20 tf / m. 4. The mesh woven or knitted fabric for civil engineering according to claim 1, 2 or 3, wherein the thickness of the thermoplastic film to be laminated on the mesh woven or knitted fabric is 0.5 mm to 10 mm where the yarn is not easily affected by deterioration by ultraviolet rays. Resin coating method. 5. The resin coating method for a mesh woven or knitted fabric for civil engineering according to claim 1, wherein an ionomer is adhered to the yarn of the mesh woven or knitted fabric to enhance a crosslinking effect between the yarn and the thermoplastic film.