JPH10102348A - Mesh sheet for building work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject sheet having excellent flexibility and appearance, causing neither thread slippage nor contraction, mixedly weaving thermally fusible yarns comprising plural components different in melting temperature as warp and weft and thermally fusing the low-melting components to stick to each other at crossing parts. SOLUTION: (A) A yarn body 1 comprising a high-melting component or a nonmelting component and (B) a thermally fusible yarn body 2 comprising at least two components different in melting temperature are used as warp and weft, respectively to weave a mesh substrate. The blending ratio of the yarn body 1 to the thermally fusible yarn body 2 is 50/50 to 90/10 by weight and the components lower in melting temperature are thermally fused at crossing parts of the thermally fusible yarn body 2 of the warp and weft to carry out mesh stopping texture. Preferably, the yarn body 1 and the thermally fusible yarn body 2 are subjected to disaster preventing treatment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mesh sheet for construction work, and more particularly, to a mesh sheet stretched around an outer periphery of a construction work site to prevent danger, which is flexible and excellent in appearance. The present invention relates to a mesh sheet for architectural work having flameproofing properties in which misalignment and shrinkage are prevented.

[0002]

2. Description of the Related Art Conventionally, a mesh sheet for building construction having a flameproof property using a woven or knitted fabric made of a fiber subjected to a flameproof soaking process has been widely used.
There has been a problem that misalignment occurs at the intersection of the courses due to tension at the time of expansion or flapping at the time of use, the opening part shifts, and the sheet is deformed. For this reason, a woven fabric such as a woven fabric employing Russell knitting or a woven fabric employing 3 to 7 weft gauze weaves is used as a woven structure that is difficult to misalign. However, since these woven and knitted fabrics are not actively filled, the peripheral edges of the sheet are treated with reinforcing ropes, edge tapes, sewing threads with edge tapes, etc. Shrinkage occurred during and during washing, and as a result, it was difficult to maintain the initial dimensions of the sheet for a long period of time.

[0003] As a mesh sheet for architectural work which has been actively filled, a material obtained by coating a polyvinyl chloride resin on a polyester multifilament woven fabric is widely used. Coating over the entire surface has the drawback that wrinkles are likely to occur during spreading, and also causes the problem that toxic chlorine gas is generated during combustion, and that the plasticizer bleeds easily and becomes dirty and adheres to odors. There was also.

[0004] In order to solve such problems, a composite fiber yarn in which a low melting point component occupies a part of the fiber surface is used as a warp yarn in a core layer of a high melting point component, and a warp yarn intersection is formed. A mesh sheet subjected to misalignment prevention processing by heat welding (for example, Japanese Utility Model Laid-Open No. 1-78190,
No. 317025) has been proposed, but if all the intersections are heat-sealed and subjected to sealing, the mesh base material lacks flexibility, and furthermore, the tensile strength that is obliquely received at the time of expansion is applied. There was also a problem that appearance was inferior, for example, wrinkles tended to occur because of inability to absorb.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a mesh sheet for architectural work which is flexible, has excellent appearance, and has flameproofing properties in which misalignment and shrinkage are prevented. The purpose is to:

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a fiber body comprising a high melting point component or a non-melting component and a heat-fusible yarn containing at least two components having a difference in melting temperature. The mesh base material used, wherein a mixing ratio of the fibrous body and the heat-fusible yarn is 50/50 to 50/50 by weight.
A mesh sheet for building works, wherein the mesh sheet is 90/10, and is subjected to a sealing process by heat-welding components having a low melting temperature at the intersection of the heat-fusible filaments in the process. . In addition, the fibrous body and the heat-fused yarn constituting the mesh base material are provided with flame resistance.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The heat-fusible yarn used in the present invention contains at least two kinds of components having a melting temperature difference, and the component having a low melting temperature is composed of a thermoplastic resin. Specifically, low-density polyethylene,
Examples thereof include linear low-density polyethylene, medium-density polyethylene, high-density polyethylene, polypropylene, polyolefins such as ethylene-ethyl acrylate copolymer and ethylene-vinyl acetate copolymer, and polyvinyl chloride. Components having a high melting temperature include thermoplastic resins such as high-density polyethylene, polypropylene, polyamide, and polyester. In addition, non-melted regenerated fibers, natural fibers, and the like.

The difference between the melting temperatures of the at least two components is preferably at least 10 ° C., more preferably at least 20 ° C., even more preferably at least 30 ° C. If the melting temperature difference is less than 10 ° C., components having a high melting temperature at the time of filling process are not preferable because they cause thermal deterioration. The melting temperature of the component having a low melting temperature is preferably 100 ° C. or higher. When the melting temperature is lower than 100 ° C., it is difficult to wash the sheet with warm water, which is not preferable.

The form of the heat-fusible yarn containing at least two kinds of components having the above-mentioned melting temperature difference is a core-sheath type or parallel type composite yarn consisting of at least two kinds of components having a melting temperature difference. Twisted yarn, drawn yarn, mixed fiber yarn, and the like, which are made of a filament or a filament composed of different components.

The fiber used in the present invention is a synthetic fiber spun from a synthetic resin having a relatively high melting point,
Alternatively, it refers to a yarn made of recycled fiber or natural fiber that does not have heat-fusibility, and is woven and knitted using this fiber body and the heat-fusible yarn body as weft yarns, respectively. It constitutes a mesh base material. Specific preferred examples of the fibrous body include polyester-based, polyethylene-based, polypropylene-based, polyamide-based and polystyrene-based resin monofilaments and multifilament yarns, and in particular, polyester multifilaments have high strength and moderate flexibility. Which is excellent in finished appearance, inexpensive and easy to handle, and is suitably used.

The thickness of the fibrous body and the heat-fusible filament is not particularly limited, but may be 300 to 80.
00 denier is preferred, and more preferably 500-3.
000 denier.

It is preferable that the fibrous body and the heat-fusible filament are provided with a flameproof property. As a method for imparting flame resistance, a flameproof soaking method in which a flame retardant is added to the fibrous body, a flameproofing method by a thermosol processing method or an exhaustion method, and the like are employed. For the heat-fusible yarn, a method of blending a known organic or inorganic flame retardant with at least one component of the core-sheath or parallel type composite yarn is adopted. You.

The above-mentioned fibrous body and the heat-fusible yarn are used for each process to constitute a mesh base material. The mixing ratio is a weight ratio (fibrous body / heat-fusible yarn). 50 /
50 to 90/10, preferably 60/40 to 80 /
The range is 20. If the use amount of the heat-fusible yarn is less than 10% by weight, the sealing effect is not sufficient, and if it exceeds 50% by weight, the ratio of the sealing portion is increased, so that flexibility is lacking.
Wrinkles are likely to occur.

The woven structure of the mesh base material can be selected as appropriate, such as plain weave, satin weave, towel weave, and mosaic weave. . On the other hand, a knitting structure can be appropriately selected such as a flat knitting and a warp knitting, but a Russell knitting is preferable.

The basis weight of the mesh substrate is preferably 100 to 500 g / m ² , more preferably 200 to 500 g / m ² .
400 g / m ² . Further, the void area of the mesh substrate is preferably 5 to 60% with respect to the area of the entire sheet,
More preferably, it is 10 to 50%.

The mesh base material thus obtained is:
Hot plate contact type, hot roll type, infrared radiation type, high frequency welder type, adopt a known method such as hot air tenter type,
The sealing process can be performed by welding a component having a low melting temperature at the intersection of the warp yarns of the heat-fusible yarn. In the heat treatment, the melting temperature is lower than the melting temperature of the high component,
It is performed in a temperature range equal to or higher than the melting temperature of the component having a low melting temperature, but it is important that the component having a low melting temperature is welded without impairing the stretching effect of the component having a high melting temperature. The mesh base material subjected to the filling process is cut into a predetermined size, the peripheral edge portion is subjected to edge processing, and a mesh sheet for building work of the present invention is formed by, for example, placing eyelets.

The above-mentioned mesh sheet for construction work is JIS
Those having a performance that meets the flameproof standard specified in L1091 are preferable.

[0018] The fibrous body and the heat-fusible yarn used in the present invention are provided in a range not departing from the gist of the present invention.
Ordinary additives such as weathering agents, antioxidants, lubricants, antistatic agents, pigments, inorganic fillers, crosslinking agents, foaming agents, nucleating agents and the like may be blended.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the specific structure of the present invention will be described with reference to embodiments, and its effectiveness will be described.

EXAMPLE As a fibrous body of a mesh base material, a polyester multifilament 1500 denier subjected to flameproof soaking treatment was prepared. On the other hand, a polyester multifilament 1000 denier was used as a core layer, and an ethylene-ethyl methacrylate copolymer (MFR = 0.75 g / 10 min, E
A concentration 15 Wt%, trade name: J-LEX EEA, A1
150, manufactured by Nippon Polyolefin Co., Ltd.) 95 parts by weight, maleic anhydride graft-modified linear low density polyethylene (M
FR = 1.2g / 10min, Japan Polyolefin Co., Ltd.
5 parts by weight) and a resin composition comprising 130 parts by weight of magnesium hydroxide (trade name: Kisuma 5J, manufactured by Kyowa Chemical Co., Ltd.) as a flame retardant, and a core-sheath composite type having a total fineness of 2000 denier. A heat-fusible filament was formed. Using the above fibrous body and the heat-fusible yarn, as shown in FIG.
-1 warp weave 26 warp / inch, weft 1
A woven fabric with a driving density of 7 threads / inch was formed. The composite heat-fusible yarn has a tangled yarn 2 for the ground portion as a warp.
The book was punched at intervals of 3 pitches, and the edge portion was punched into a width of 5 cm. In addition, it was driven every four pitches as a weft. The obtained woven fabric is heated and welded in an infrared radiation furnace, subjected to a sealing process, and the periphery of the cut mesh base material is sewn to form a 1.8 mx 5.1 m flame-resistant building. A mesh sheet for construction was manufactured.

COMPARATIVE EXAMPLE For the construction work, a polyester base multi-filament 1500 denier flameproofed and soaked was used for all warp yarns without using the core-sheath composite type heat-fusible yarn. A mesh sheet was manufactured and used as a comparative example.

Evaluation In evaluating the mesh sheets for construction work of the examples and comparative examples, the washing step 1 was carried out by a stirring type sheet washing machine.
A washing test in which two rinsing steps were performed once per washing was performed eight times in total, and the degree of shrinkage of each sheet was measured. The test results are shown in Table 1 collectively, and it was confirmed that the mesh sheet of the example had less shrinkage.

[0023]

[Table 1]

[0024]

As described above, the mesh sheet for construction work of the present invention comprises a fibrous body composed of a high-melting component or a non-melting component and a heat-fusible thread composed of a low-melting component at a specific ratio. Each of the mesh base materials used for the warp yarns is used, and the heat treatment is performed on the mesh base material, so that the intersections between the fibrous bodies and the intersections between the fibrous bodies and the heat-fusible filaments are heated. No welding is performed, and only the intersection of the courses of the heat-fusible yarns is partially heat-sealed. By performing the partial filling at the predetermined intervals, the mesh base material has flexibility as a whole, has less appearance of wrinkles, has excellent appearance, can suppress shrinkage due to washing, and poses a problem in use. Without such misalignment, the mesh sheet is effective as a construction work mesh sheet.

[Brief description of the drawings]

FIG. 1 is a partially enlarged plan view of a mesh sheet of the present embodiment constituted by a 3-1 weft weave structure.

[Explanation of symbols]

 Reference Signs List 1 fibrous body 2 heat-fusible yarn 3 warp 4 weft

Claims (2)

[Claims] 1. A mesh base material comprising a fibrous body comprising a high melting point component or a non-melting component and a heat-fusible yarn containing at least two components having a difference in melting temperature, respectively. A mixture ratio of the fibrous body and the heat-fusible yarn in a weight ratio of 50/50 to 90/10, and components having a low melting temperature at the intersection of the heat-fusible yarns in the course of the process. A mesh sheet for construction work, which is provided with a sealing process by heat welding. 2. The mesh sheet for construction work according to claim 1, wherein the fibrous body and the heat-fusible yarn constituting the mesh base material are provided with flameproofness.