JP2924734B2 - Mesh fabric for construction work - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used to prevent building materials such as bolts and iron pieces from falling out of the working range during construction work and high-place work, as well as for protection of workers and moderate windbreak. The present invention relates to a mesh fabric for construction work to be performed.

[0002]

2. Description of the Related Art Conventionally, a woven structure mainly composed of coarse plain weave or leno woven fabric has been prepared by preventing misalignment, and furthermore, a polyvinyl chloride resin or the like is processed on the surface of the above woven structure. Examples of using flame-retardant fabrics as mesh fabrics for construction work are known, and examples of using warp knitted structures such as double knits and warp insertion Russells as mesh fabrics for construction work. Etc. are known.

[0003]

However, in the conventional woven structure, the leno weave has a significant misalignment as it is, and a coating of vinyl chloride or the like is essential. Therefore, the weight is heavy and the cost is high. There is a drawback that stains due to bleed of the plasticizer of vinyl chloride are conspicuous, and the washing is not easy.

On the other hand, in the case of plain weave, the desired air permeability cannot be obtained with a normal weave density, and conversely, misregistration easily occurs when the texture is coarse enough to have sufficient air permeability. It will be. Therefore, usually, a plain weave having a coarse weave structure and a joint portion coated with vinyl chloride or the like and used as a seal is used, and as a result, it has only the same drawbacks as the leno weave.

[0005] On the other hand, the warp knitting structure has a drawback that the strength utilization rate of the yarn is very low, particularly in the weft direction, because the yarn has a loop-like structure instead of a straight structure. Further, in the case of the weft insertion Russell, there is a drawback that misalignment, bias distortion and unevenness are likely to occur.

[0006] In any case, the conventional techniques have the drawbacks that none of them satisfy the problems of air permeability and misalignment at the same time, and that the utilization rate of yarn strength is low.

In view of the drawbacks of the prior art, the present invention is lightweight, has a strong texture, does not cause misalignment, has a high yarn strength utilization rate, has a stable air permeability, and has excellent flame retardancy. It is an object of the present invention to provide an excellent mesh fabric for construction work which also has a property.

[0008]

The present invention has the following configuration to achieve the above object.

That is, the mesh fabric for construction work of the present invention is a fabric having 3 to 7 polyester fibers composed of polyester fibers obtained by copolymerizing a bifunctional phosphorus compound in polymer molecules. The product of the yarn fineness (D) and the density (book / in) of the woven fabric is 3 to 6 (×
10 ⁴ ) in the horizontal direction in the range of 2 to 4.5 (× 10 ⁴ ).

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be further described.

The mesh fabric for construction work referred to in the present invention is:
As described above, the woven fabric includes a specific polyester fiber, and has a specific 3 to 7 cross-woven structure.
By adjusting to a specific weaving density, it is possible to exhibit a characteristic that has not been achieved by the prior art, but has excellent flame retardancy as well as excellent properties of preventing misalignment, air permeability and light weight. That is what we have determined.

That is, a woven fabric made of a polyester fiber obtained by copolymerizing a bifunctional phosphorus compound in the polymer molecule of the present invention passes the flame resistance of JIS A-8952 (1977) Appendix Table 1. That is, specifically, it has a feature of passing the flame retardancy test of Category 3 of JIS L-1091 A-1 method and Category 2 of D method.

[0013] The polyester fiber is such that at least 85 mol% of the repeating units are polyethylene terephthalate, polybutylene terephthalate, polyethylene 2,
6 is a polyester such as 6-naphthalate, and the repeating unit thereof preferably has a content of 0.1 in terms of phosphorus element.
It is a fiber made of a polymer in which a bifunctional phosphorus compound is copolymerized in the range of 2 to 1% by weight. The above-mentioned polyester may contain a copolymer component as long as the flame retardancy is not impaired.

The intrinsic viscosity of the polymer of the polyester fiber is preferably 0.65 or more, and more preferably a polyester fiber having a fiber density of 1.38 g / cm ³ or more.

As the above-mentioned bifunctional phosphorus compound, a phosphonate represented by the following formula (1), a phosphinate represented by the following formula (2) or a phosphine oxide represented by the following formula (3) is preferably used.

[0016]

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As the phosphorus compound of the formula (2), (2-carboxyethyl) methylphosphinic acid, (2-methoxycarbonylethyl) methylphosphinic acid methyl, (2-
(Carboxyethyl) phenylphosphinic acid, methyl (2-methoxycarbonylethyl) phenylphosphinate,
Methyl (4-methoxycarbonylphenyl) phenylphosphinate, ethylene glycol ester of [2- (β-hydroxyethoxycarbonyl) ethyl] methylphosphinic acid and the like are preferably used.

As the phosphorus compound of the formula (3), (1,2)
-Dicarboxyethyl) dimethylphosphine oxide,
(2,3 dicarboxypropyl) dimethylphosphine oxide, (1,2dimethoxycarbonylethyl) dimethylphosphine oxide, (2,3 dimethoxycarbonylethyl) dimethylphosphine oxide, [1,2di (β
[Hydroxyethoxycarbonyl) ethyl] dimethylphosphine oxide, [2,3 di (β-hydroxyethoxycarbonyl) ethyl] dimethylphosphine oxide and the like are preferably used.

Among these compounds, the compounds represented by the formula (3)
Is preferred because of its good copolymerization reactivity with the polyester and little scattering during the polymerization reaction.

The above-mentioned bifunctional phosphorus compound is preferably contained in the polyester polymer in an amount of preferably 0.2% in terms of phosphorus element.
To 1.5% by weight, particularly preferably 0.4 to 1.3% by weight
What is contained is good. That is, when the content is less than 0.2% by weight, the flame retardancy of the obtained mesh fabric for construction work decreases, which is not preferable. On the other hand, when the amount of phosphorus element is 1.
If it exceeds 5% by weight, the physical properties of the raw yarn, especially the strength is reduced,
Disadvantages such as an increase in shrinkage characteristics and an increase in manufacturing cost appear. Such a copolyester fiber,
The woven fabric may be constituted by itself, but if the content is at least 40% by weight, the above-mentioned effect is exhibited. Therefore, the woven fabric is constituted by being mixed with other fibers such as interwoven, mixed fiber, and mixed spinning. Is also good.

The mesh fabric for construction work composed of such polyester fibers can be preferably subjected to flameproofing. Such flameproofing may be performed at the fiber stage, or may be performed after forming the fabric.

Examples of the flame retardant include organic chlorine compounds such as chlorinated paraffin, thiourea resins, organic sulfur compounds such as phenolsulfonic acid, THPC and APC.
Organic phosphorus compounds such as PO, ammonium phosphates such as ammonium phosphate, metal chlorides such as titanium chloride,
Alkali metal salts such as sodium silicate, bromo compounds and antimony compounds can be used. When such a flame retardant is contained in the polyester fiber, it is preferable that the flame retardant be added in an amount of 0.5 to 15% by weight based on the weight of the fiber. When the flame retardant is contained in the form of a woven fabric, it is preferably added in an amount of preferably 1 to 20% by weight based on the weight of the polyester fiber woven fabric.

The mesh fabric for construction work of the present invention not only contains such polyester fibers but also adjusts the weaving density to balance properties such as tensile strength, misalignment and air permeability. It is characterized by points.

That is, a preferred example of the three to seven lines is as follows.

[Table 1] The product of the yarn fineness (D) and the density (book / in) of the woven fabric in Table 1 is 3 to 6 (× 10 ⁴ ) in the vertical direction and 2 to 4.5 (×) in the horizontal direction. It can be seen that it is in the range of 10 ⁴ ), but by adjusting to this range, properties such as tensile strength, misalignment and air permeability are balanced.
The degree of misalignment is largely determined by the fineness of warp yarns and weft yarns, the number of yarns between inches, and the balance of the crimp ratio in the woven fabric. The yarn fineness (D) and density (lines / in) are large. )
It has been found that the resistance to misalignment increases when the product is within a specific range. By adjusting to this range, the crimp rate can be balanced, and the warp yarn,
It also has the effect of increasing the frictional resistance of the weft thread. When the weaving density is increased, the tensile strength is increased and misalignment is prevented, but the opening portion of the leno is compressed to be small and the air permeability is reduced. However, if the weaving density is too high, a problem arises in the weaving properties, but such a problem is easily solved by adjusting the weaving density to the above range.

The mesh fabric for construction work of the present invention preferably has the properties described in Annex Table 1 of JIS A-8952 (1977) when measured according to the flame resistance test method of JIS A-8952 (1977). Those having the prescribed flame retardancy are preferred.

In any case, the mesh fabric for construction work of the present invention can be used as the protective fabric shown in Appendix 1 of the flameproof test method for building construction sheets specified in JIS A-8952 (1977). Flammable, specifically, Category 3 of JIS L-1091 A-1
And passed the flame retardancy test of Category 2 of Method D. Further, it is preferable to have a flameproofing property of a carbonized area of about 20 cm ² or less. Such a mesh fabric for construction work may be dyed by various methods such as dyeing or pigmentation by post-processing, or a weather resistance improver, a water repellent, and a waterproofing agent may be added as necessary. Or, it can be added to add desired properties.

[0027] The mesh fabric for construction work of the present invention has an excellent feature that the yarn has a nearly straight weave structure, so that the strength properties of the yarn used can be fully utilized.

The mesh fabric for construction work according to the present invention is a fabric having a specific weave structure called a horizontal weave structure composed of alternating repeating structures of a leno and a plain weave portion. That is, the present inventors have found that, when the woven fabric of the above-mentioned special woven structure is used for a special purpose as a mesh fabric for construction work, it surprisingly satisfies the various required characteristics, and arrived at the present invention. It is.

The cross-grained structure of the present invention is provided with air permeability by the entangled portion and an effect of preventing misalignment by the plain weave portion. However, these structures act synergistically to provide air permeability. And the prevention of misalignment is realized in a mesh fabric that is well balanced.

[0030] Such a horizontal structure 1 will be described with reference to the drawings.

FIG. 1 shows a three-sided weave design 1, which is a repetitive design in which a plain weave design is composed of three wefts (2, 3, 4) and a warp 9, and is tangled next. , The most breathable tissue.

FIG. 2 shows a five-line weaving structure 1 (weft: 2, 3,
4, 5 and 6), and FIG.
2, 3, 4, 5, 6, 7, 8).

In such a horizontal weave design, as the number of weaves increases, the number of wefts increases to five and seven, so that the ratio of plain weave portions increases accordingly, resulting in a stronger structure and less misalignment. However, at the same time, the air permeability decreases. That is, if the cross-grained structure has 9 or more gauze, it becomes almost the same as plain weave, and the air permeability generally lowers to less than 100 cm ³ / cm ² · second, which makes it unsuitable as a mesh fabric for construction work. In addition, the leno weave consisting of only leno is easily misaligned unless the intersection joint is fixed with a resin such as polyvinyl chloride or the like, and therefore cannot be put to practical use as a mesh fabric for construction work.

[0034] Therefore, the weave structure suitable as a mesh fabric for construction work is only a very specific range of structures of 3 to 7 weave structures, and only such a particular structure is
It is lightweight and achieves both air permeability and prevention of misalignment without adding resin.

In the mesh fabric for construction work of the present invention, the air permeability when measured by a Frazier-type air permeability measuring instrument based on JIS L-1096 is 100 to 400 cm ³ / cm ² ···.
Seconds are important for windproof effect, ventilation during spraying work, and to withstand wind pressure in strong winds.

The tensile strength of the mesh fabric for architectural works of the present invention measured at a gripping distance of 20 cm and a width of 3 cm by a strip method based on the method of JIS A-8952, paragraph 5.1 is 150 kg or more. Is important from the viewpoint of durability and drop prevention effect.

The mesh fabric for construction work of the present invention preferably has a basis weight in the range of 200 to 450 g / m ² in view of the strength retention of the fabric, ease of handling upon construction and transportation.

The fineness of the yarn used in the architectural mesh fabric of the present invention is preferably 500 D or more, particularly preferably in the range of 1000 to 3000 D. That is, if the fineness of the woven yarn is smaller than 500D, the holes contributing to the air permeability of the entangled portion become smaller, and the air permeability decreases, and at the same time, the tensile strength also decreases. In addition, when the fineness of the woven yarn is increased to 8000 D or more, misalignment tends to occur.

In the present invention, the fineness of the warp and the weft of the woven fabric may be the same or different.

The monofilament strength of the synthetic fiber used in such a woven yarn is preferably 4 g / d or more, more preferably 6 g / d or more.
It is desirable to have a strength equivalent to g / d or more in order to obtain a low-weight and high-strength woven fabric. The fibers constituting such a woven yarn may be either long fibers or short fibers.

The mesh fabric for architectural work of the present invention can be dyed by various methods such as dyeing or pigmentation by post-processing if necessary, or, if necessary, a weather resistance improver and a water repellent. , Adding or applying a waterproofing agent,
Desired properties can be added.

[0042]

The present invention will be further described below with reference to examples.

Example 1 Flame-retardant polyester fiber (intrinsic viscosity 0.94) containing 0.5% by weight of [2- (β-hydroxyethoxycarbonyl) ethyl] methylphosphinic acid as a phosphorus compound in terms of phosphorus element. 9.0 g single fiber strength of -288F
/ D using a blue dyed yarn and a loom with a lenoheld
Weaved this Yokoro organization.

The greige density of this woven fabric is 24
The weaving was set at 190 ° C. for 20 seconds using a heat setter.

The density of the woven fabric after setting was 26 warps / inch and 18.5 wefts / inch, and the woven yarn fineness / density product of this woven fabric was 3.9 × 10 ⁴ in the warp. The width was 2.8 × 10 ⁴ . The basis weight was 330 g / cm ² .

When the air permeability of the woven fabric was measured by a Frazier-type air permeability meter, it was 210 cm ³ / cm ² · second. The intrinsic viscosity was determined by dissolving 0.8 g of the yarn in 10 ml of orthochlorophenol at a temperature of 100 ° C. for 30 minutes and measuring the viscosity of the solution using an Ostwald viscometer.
It was measured at 5 ° C.

Further, the tensile strength of this woven fabric was measured in accordance with JIS A-8952.
When measured by the method described in Section 5.1, the length was 320 kg and the width was 250 kg.

Further, when the flameproofing performance of this woven fabric was evaluated, the flameproofing properties shown in Appendix 1 of JIS A-8952 (1977), that is, Category 3 of the JIS L-1091 A-1 method (carbonized area 4 to 4) 10c
m ² , residual flame time 0 seconds, residual dust time 0 seconds, carbonization distance 2-6c
m) and the flame retardancy test of Method D, Category 2 (flame contact frequency 5 to 6 times).

The woven fabric was cut into a width of 200 cm and a length of 5.2 m, ropes were fixed on all sides, and sewed with a sewing machine to prepare a mesh fabric for construction work.

This mesh fabric for construction work is light in weight, excellent in handling during construction and transportation, excellent in preventing misalignment, has a soft feeling, has little adhesion of dirt, and can be easily washed with water washing. It was something.

Example 2 Polyester fiber having a single fiber strength of 8 g / d (intrinsic viscosity of 0.1 g / d)
94) Using a green dyed yarn of 2000D-192,
On a loom having a renoheld, five woven cloths having a horizontal weave structure were woven to a greige density of 20 lengths / inch and 15 widths / inch.

The woven fabric was then coated with a flame retardant (trade name K-19A, manufactured by Meisei Chemical Industry Co., Ltd.) containing a phosphorus-containing cyclic compound so that the active ingredient was 10% by weight of the fiber. After padding, drying was performed at 130 ° C. for 30 seconds using a drier, and heat treatment was performed at 190 ° C. for 20 seconds using a heat setter to set and fix the flameproofing agent.

The woven density of this woven fabric is 22 warps / inch and the weft density is 15 wicks / inch. The woven yarn fineness / density product of this woven fabric is 4.4 × 10 ⁴ in warp and 3.0 in weft. × 1
0 was ^4. The basis weight was 382 g / m ² .

The air permeability of this fabric is 240 cm ³ / cm ² ·
Seconds, and the tensile strength is 350 kg (vertical), 260 k (horizontal)
g, and the flameproofing performance is classified into Category 3 of the JIS L-1091 A-1 method (carbonized area: 4 to 8 cm ² , residual flame time: 0 second, residual dust time: 0
Sec., Carbonization distance of 2 to 4 cm) and the flame retardancy test of the method D, category 2 (flame contact frequency 5 to 6 times).

The woven fabric was sewn in the same manner as in Example 1 to form a mesh fabric for construction work. The woven fabric was lightweight, flexible, strong and strong with no misalignment.

Example 3 A flame-retardant polyester fiber containing [2- (β-hydroxyethoxycarbonyl) ethyl] methylphosphinic acid as a phosphorus compound in an amount of 0.5% by weight as a phosphorus compound in a warp yarn (having an intrinsic viscosity of 0) .94) 1500 D-144F monofilament gray dyed yarn having a strength of 8 g / d, and a weft yarn containing polyester fiber not copolymerized with the phosphorus compound (having an intrinsic viscosity of 0.9 g / d).
94) Using a gray dyed yarn having a single fiber strength of 1500 g-144F having a fiber strength of 8 g / d, using a loom having a renoheld,
Weaving was made of three horizontal weaves having a warp yarn density of 23 yarns / inch and a weft yarn density of 15 yarns / inch.

The greige fabric was scoured at 80 ° C.
After drying at 70 ° C, it was set at 215 ° C with a heat setter.

The density of the woven fabric after setting was 26 warps / inch and 18 wefts / inch. The woven yarn fineness / density product of this woven fabric was 3.9 × 10 ⁴ warp and 2 wefts / inch. 0.7 × 10 ⁴ . The basis weight was 370 g / cm ² .

When the air permeability of the woven fabric was measured with a Frazier-type air permeability meter, it was 220 cm ³ / cm ² · second. When the tensile strength of this woven fabric was measured by the method of JIS A-8952, paragraph 5.1, the length was 295 kg and the width was 240 kg
Met.

Further, when the flameproof performance of this woven fabric was evaluated, it was found that the flameproofness of Appendix 1 of JIS A-8952 (1977), that is, Category 3 of JIS L-1091 A-1 method (carbonized area 5 to 5) 8cm ² ,
(The residual flame time was 0 seconds, the dust time was 0 seconds, and the carbonization distance was 3 to 6 cm.).

The woven fabric was sewn in the same manner as in Example 1 to prepare a mesh fabric for construction work. ◎ This mesh fabric for construction work is lightweight, rich in handling during construction and transportation, excellent in preventing misalignment, has a soft feel, has little adhesion of dirt, and can be easily washed with water washing. Met.

[0062]

According to the present invention, there is provided a mesh fabric for construction work which is lightweight and simultaneously satisfies both air permeability and prevention of misalignment.

According to the present invention, the effect of preventing misalignment can be achieved extremely strongly, the utilization rate of yarn strength is excellent, and the characteristics of the yarn used can be fully utilized.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a three-sided weave structure that is an example of a weave structure that can be used for the mesh fabric for construction work of the present invention.

FIG. 2 shows an example of a five-sided gable structure that can be used for the mesh fabric for construction work of the present invention.

FIG. 3 shows an example of a seven-sided gable structure that can be used for the mesh fabric for construction work of the present invention.

[Explanation of symbols]

 1: Yokoro texture 2, 3, 4, 5, 6, 7, 8: weft 9: warp

Continuation of the front page (56) References JP-A-1-125471 (JP, A) JP-A-58-28324 (JP, A) JP-A-52-85566 (JP, A) JP-A-2-261117 (JP) , A) JP-A-3-36367 (JP, A) JP-A-53-111068 (JP, U) JIS A8952 "Seat for construction work" (Japanese Industrial Standards Association) Knitting Taito (Sangyo Tosho Co., Ltd.) (58) Surveyed field (Int.Cl. ⁶ , DB name) D03D 19/00 D03D 1/00 D03D 15/12 E04G 21/24

Claims (11)

(57) [Claims] 1. A polyester resin comprising a polyester fiber obtained by copolymerizing a bifunctional phosphorus compound in a polymer molecule.
A woven fabric having a seven-sided weave texture, and the product of the yarn fineness (D) and the density (book / in) of the woven fabric is 3 to 3 in the vertical direction.
6 (× 10 ^4), construction work for the mesh fabric, characterized in that in the transverse direction is in the range of 2~4.5 (× 10 ^4). 2. The mesh fabric for building works according to claim 1, wherein said bifunctional phosphorus compound is copolymerized in a polyester in an amount of 0.2 to 1% by weight. 3. The polyester has an intrinsic viscosity of 0.65.
The mesh fabric for construction work according to claim 1, which is the above. 4. The polyester fiber has a density of 1.3.
8 g / cm ³ or more in construction work for the mesh fabric according to claim 1, wherein. 5. The polyester fiber has a strength of 4 g / g.
The mesh fabric for construction work according to claim 1, which is d or more. 6. The polyester fiber woven yarn having a fineness of 5
The mesh fabric for construction work according to claim 1, which has a size of 00D or more. 7. The fabric according to claim 1, wherein said woven fabric has an air permeability of 100 to 400 cm ^3.
2 / cm ² · sec. 8. The mesh fabric for construction work according to claim 1, wherein the fabric has a tensile strength in the vertical and horizontal directions of 150 kg / 3 cm width or more. 9. The fabric has a basis weight of 200 g / m ^{2 to} 45 g / m ^2.
0 g / m ² in building construction mesh fabric according to claim 1, wherein. 10. The mesh fabric for construction work according to claim 1, wherein said fabric passes the flameproofing properties shown in Appendix 1 of JIS A-8952 (1977). 11. The flame resistance of the woven fabric is determined to have a carbonized area of 20 cm ^2.
The mesh fabric for construction work according to claim 10, which is: