JP2007146342A - Mesh sheet for curing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a curing mesh sheet taking consideration of safety such as non-emission of harmful substances such as chlorine gas and dioxin in the case of incineration disposal after use. <P>SOLUTION: The curing mesh sheet is composed of a knit fabric or woven fabric of ripple texture produced by using a compound yarn composed of a halogen-free flame-retardant dope-dyed yarn and a low-melting yarn wherein the crossing points of the texture of the knit or woven fabric are fixed by the welding of the low-melting yarn. The ripple yarn constitution fineness of the ripple texture is 1.5-5 times the fabric base yarn constitution fineness and the gap between the ripple yarns is ≥0.5 cm. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a curing mesh sheet for building work made of a knitted fabric for use as a building material, and more particularly, a curing sheet surrounding a building, such as falling of building materials, scattering of paint, etc. It is used as a safety member to protect workers, nearby objects, and pedestrians, and has excellent safety with little impact on air pollution when landfilled or incinerated when no longer needed. It relates to a mesh sheet.

  As a curing mesh sheet for building construction, generally, a mesh fabric made of polyethylene terephthalate fibers coated with a vinyl chloride resin is well known, and many domestic contractors use it.

  In recent years, the mesh sheet has been scientifically clarified that dioxin is generated in incineration disposal after use, and has been taken up as a social problem because it affects air pollution.

  Therefore, from textile manufacturers to resin / drug manufacturers, many proposals are made of resin / drugs such as dechlorinated vinyl and non-halogens that do not generate dioxins in incineration disposal, and mesh sheets for building work made from them. As a result, the effect has been strongly promoted by the industry.

  As substitutes for vinyl chloride resin, polyamide, polyurethane, polyolefin, vinyl acetate, etc., and flame retardants and flame retardants use phosphorus or phosphorus compounds, and the chlorine, bromine and fluorine elements that cause dioxin generation Materials not included are selected and manufactured and sold for all curing mesh sheets.

  However, vinyl chloride resin and chlorine / bromine flame retardants are inexpensive materials, and the cost is a problem compared to a cured mesh sheet manufactured using these materials. It was also the actual situation.

  Conventionally, for example, a mesh knitted fabric using a filament yarn composed of two components having a melting temperature difference, and a mesh sheet in which the intersection of the knitted fabric is fused with a low melting point component has been proposed (for example, , See Patent Document 1). Similarly, synthetic fiber filament yarns and lower melting filament yarns are combined and twisted to fuse the intersections of the yarns. There is no misalignment or bending, and pin pulling tension is excellent and lightweight. A mesh sheet has been proposed (see, for example, Patent Document 2). In addition, there has been proposed a woven fabric made of a blended yarn of polyester fiber and binder fiber, in which the intersection of the polyester fiber and the warp weft is fused with the binder fiber (see, for example, Patent Document 3).

  In addition, polyolefin resin, red next door, and ammonium polyphosphate compound are combined, and each resin component contains a flame retardant that does not generate halogen gas during combustion. There has also been proposed a flameproof mesh sheet obtained by forming a woven structure after coating, and then fusing the woven fabric with warp and horizontal tissue intersections by heating (for example, see Patent Document 4).

  Furthermore, the flame retardant primary yarn not containing a halogen element and the low melting point yarn are first compounded, and then the composite yarn is made into a knitted fabric form, and then the structure intersection is resinized in a high temperature set. There has also been proposed a mesh sheet for construction of a structure formed by fusing and sealing (see, for example, Patent Document 5).

  However, the proposed mesh sheet described above is based on the design of a woven fabric with low-definition yarn due to low cost requirements, and also in terms of physical properties, such as toughness and durability, from the point of view of cross-point adhesion technology. The current situation is not done.

Furthermore, it is necessary to promote the advancement of the curing sheet in view of the fact that environmental anxiety due to severe natural phenomena in which intense weather and frequent severe storms occur continuously in recent years.
Japanese Patent Laid-Open No. 5-141099 JP-A-5-287666 JP-A-8-176934 JP 11-36602 A (Registration No. 3340946) Japanese Patent Laid-Open No. 2003-253541

The present invention is intended to solve the above-mentioned problems of the prior art,
(A) Do not let out hazardous substances such as chlorine gas and dioxin when you incinerate after use.
(B) It has the performance that can be passed and applied to the class II mesh sheet prescribed in JIS L 1096A method and B method, and has higher strength than vinyl chloride resin sheet. Can be improved,
(C) In terms of practical use, it will be exposed to strong ultraviolet rays when exposed to sunlight, so safety is taken into consideration by enhancing performance to prevent problems such as being difficult to withstand long-term use and being easily broken.
(D) Furthermore, by ensuring the low-cost product provision and weight reduction, the mesh sheet can be easily attached to and detached from the steel pipe construction, resulting in high work efficiency, worker activity and safety. It is to provide a curing mesh sheet in consideration of the surface.

The present invention comprises the following configuration in order to solve the above-described problems. That is,
(1) It is composed of a knitted fabric or a woven fabric having a ripple structure using a composite yarn of a flame retardant primary yarn not containing a halogen element and a low melting yarn, and the structural intersection of the knitted fabric or the woven fabric is fused to the low melting yarn. The ripple mesh constituting fineness of the ripple structure is 1.5 to 5 times the fabric base yarn constituting fineness, and the interval between the ripple yarns is 0.5 cm or more. Curing mesh sheet characterized by being in range.

  (2) Tensile strength of the knitted or woven fabric in Method A (labeled strip method) of JIS L 1096 General Fabric Test Method is 490 to 800 N / 3 cm for both vertical and horizontal, and Method C of the test method ( (Trabezoid method) The tear strength of both vertical and horizontal is maintained at 90 to 400 N, and the performance after 5 hours of super UV irradiation 63 ° C. is the same as the tensile strength according to the JIS evaluation method. / 3 cm, and the tearing strength is 50 to 200 N for both vertical and horizontal, the curing mesh sheet according to (1) above.

  (3) When the low-melting yarn is fused by heat-set processing, a light-resistant agent is dipped before the processing and then exhausted by drying and curing to obtain resin fusion. The curing mesh sheet according to (1) or (2), wherein the curing mesh sheet is provided.

  (4) The curing mesh sheet according to any one of (1) to (3) above, which is a type II curing mesh for low housing construction.

  With the ripple structure, the high strength performance can be significantly improved, and in consideration of the safety that has higher strength than the vinyl chloride resin sheet, it was able to pass the Class II standards defined in the JIS L 1096A method and the B method. In addition, when it is disposed of after use of the curing mesh sheet, it does not emit harmful substances such as chlorine gas and dioxin, and does not pollute the air. If it is provided as a ripple structure mesh from the viewpoint of enhancing versatility, it is possible to achieve an attractive effect with a functional appearance.

  Hereinafter, the present invention will be described in detail.

  The mesh sheet for building construction of the present invention is in the form of a knitted or woven fabric comprising a ripple structure based on a composite yarn using a polyester-based flame retardant original yarn containing no halogen element and a low-melting yarn containing no such element. In addition, the curing sheet has a mesh-like structure in which the intersections of the structures are fused with the resin constituting the low-melting-point yarn.

  Furthermore, in order to improve practical problems, the tensile strength, tear strength, and resistance to light deterioration are suppressed by a composite processing technology that can exhaust the light-proofing agent in the process prior to the fusion set for converting low-melting yarn into resin. Etc. are further improved.

  Furthermore, the curing mesh sheet of the present invention is a basic requirement for pursuing the safety that can pass the important problem of not releasing dioxin and other hazardous substances and the class II flame retardant performance defined in JIS A 8952. On the other hand, it is a type II mesh sheet exhibiting a ripple structure that can be used as a low-cost general-purpose product and can have an attractive appearance with a functional appearance.

  The form is a mesh composed of a knitted or woven structure using a composite yarn of a polyethylene terephthalate flame retardant yarn containing no halogen element and a low melting point polyethylene terephthalate fiber, a low melting point polyamide fiber, or a polylactic acid fiber. By passing through a continuous process that melts the low melting point fiber into a resin by applying continuous heat-set processing and cooling with excellent production efficiency, the sheet-like sheet is passed through a continuous process, toughly bond the structure intersection of the polyester-based flame retardant yarn It is configured as a stop and mesh sheet.

  As described in the above-mentioned Patent Document 5 (Japanese Patent Laid-Open No. 2003-253541), the mesh sheet based on the fineness yarn has strength characteristics in the initial performance (tensile strength, tear strength, drop test). ) Is to secure the same performance as the vinyl chloride mesh sheet used as a competing product, but there is a concern that the structure performance cannot be secured if the raw yarn and conditions vary, or that the performance will deteriorate due to the severe natural environment. If you do.

  As a strength performance reinforcing means for solving the problem, the configuration of the ripple design organization is proposed as the best mode.

  In the present invention, the light environment is exhausted and the strength and tearing are lost. It is used as an effective means for improving the durability of strength.

  The configuration of the present invention will be described in more detail.

  The flame retardant primary yarn of the present invention is obtained by adding 0.2 to 1.0% by weight of a polyethylene terephthalate polymer and a bifunctional phosphorus compound at the time of polymerization, melting, and carrying out a copolymerization reaction at a high temperature of about 290 ° C. Composed of flame retardant polyester polymer fiber.

  At the same time, it can be produced by blending a color pigment for coloring the polyester fiber with the flame retardant polymer and spinning and spinning.

  As the coloring pigment, an organic pigment or an inorganic pigment not containing a halogen element is used, and depending on the hue, the coloring pigment is blended in the range of 1 to 20% by weight to prepare a master chip. After the original chip is introduced into the melted spinning kettle, chip blending is further carried out in a ratio of the original chip and the flame-retardant polyester-based chip in the range of 1:30 to 40% by weight, and after sufficiently melting and reacting. It is an effective means to produce a polyester-based flame-retardant raw yarn by spinning and spinning.

  Since the flame-retardant raw yarn can be colored with a pigment, it is also characterized by abundant color varieties, and it has a great advantage in improving general-purpose aspects because it helps to provide functionality and appearance.

  As the organic pigment, azo, anthraquinone, dioxazone, styrene and the like can be used, and as the inorganic pigment, cobalt blue, ultramarine, chromium oxide, carbon black, titanium black and the like can be used. In addition, any pigment or mixture thereof that can generally be used for coloring hot-melt fibers can be used.

  Next, as the non-halogen low-melting-point yarn that is extremely important for the constitution of the present invention, those made of fibers made of copolymer polyester, copolymer polyamide, polyolefin, flame-retardant polypropylene, and polylactic acid are used. It is preferably used from the viewpoint of the fusion effect at the intersection of the knitted fabrics.

  The low-melting yarn preferably has a melting point temperature in the range of 150 to 200 ° C. and has a melting point difference of 20 ° C. or more lower than that of the flame-retardant raw yarn.

  That is, when the melting point temperature exceeds 200 ° C., the structural failure of the low melting point yarn proceeds so much that the resin performance with an appropriate flexibility cannot be exhibited, and it is difficult to maintain the fusion effect of the mesh. .

  On the other hand, if the melting point temperature is less than 150 ° C., it depends on the material performance, but the melt viscosity does not decrease and the adhesion effect of the mesh may be easily lowered, which is not preferable.

  Furthermore, if the temperature difference between the melting points is less than 20 ° C., the heat-set processing, the higher the tendency to set high temperature, the more the polyester-type flame retardant yarns are thermally deteriorated, and the strong performance of the Class II mesh specified in JIS A 1096 It is difficult to hold, and there is a problem that it is out of the acceptable application.

  Here, as the low melting point fiber, it is preferable to use polylactic acid fiber in consideration of ECO and the global environment. The polylactic acid fiber is called an aliphatic polyester, has a melting point of 150 ° C. or higher, and exhibits an effective feature for fusing and closing a tissue intersection in the present invention.

  As a preferred method for producing polylactic acid fibers, a polylactic acid chip having a melting point of about 170 ° C. and a refractive index of about 1.45 is usually a highly distributed undrawn yarn under conditions of a spinning temperature of 220 ° C. and a processing speed of about 3300 m / min. Manufacturing. Moreover, after manufacturing an undrawn yarn, it is possible to easily draw a drawn yarn by giving a draw ratio. Furthermore, the polymer can be colored with a pigment as in the case of the polyethylene terephthalate polymer.

  The curing mesh sheet of the present invention is composed of a knitted or woven fabric having a ripple structure. For example, as shown in FIG. 1, the ripple structure includes a base yarn (vertical) B, a base yarn (horizontal) B ′, a ripple yarn (vertical) A, and a ripple yarn (horizontal) B ′.

  The base yarn of the polyester-based flame retardant primary yarn used for the cured mesh sheet having excellent functionality of the present invention preferably has a total fineness of 400 to 2500 dtex.

  At this time, the fineness of the ripple yarn is 1.5 to 5 times the fineness of the fabric base yarn, and the interval between the ripple yarns may be an array of 0.5 cm or more if a woven sheet is taken as an example.

  The standard for displaying the current performance and standard is to measure the tensile strength at a width of 3 cm. In order to clearly show the performance, the distance between the ripple yarns is preferably 3 cm or less. However, a larger ripple distance may be used depending on the purpose and demand. Furthermore, it is easy to design a difference in the ripple interval, and it can be expected that the demand for design will increase.

  In order to characterize the ripple design, it is particularly effective on the reinforcing surface when the base yarn of the fabric is composed of fineness.

  That is, in the functional mesh sheet obtained in the present invention, if the total fineness of the base yarn of the fabric is less than 400 dtex, it is difficult to clear the provisions of the JIS L 1096A method and the B method, and is a high level of the temporary industry association. It becomes easy to happen that the specifications of the type II mesh having a fabric strength of 590 N / 3 cm or more and the performance exceeding the vinyl chloride product are not achieved.

  In response to this problem, increasing the fabric density of the fabric results in a high-density mesh shape, making it difficult to ensure the porosity of the mesh, and increasing the wind pressure resistance after construction, making it difficult to obtain ventilation. , It may be difficult to be suitable as a type II curing mesh sheet.

  On the other hand, when the total fineness exceeds 2500 dtex, the low melting point yarn must be thickened as the direction to obtain the meshing effect, so that it has a net-like or wire-net-like structure rather than a mesh form. Therefore, there are concerns that the features cannot be used, such as being out of demand or easy to handle.

  Therefore, the range of the total fineness of the base yarn of the fabric that is more preferable as a mesh sheet for ensuring safety and for class II building work is preferably 450 to 2000 dtex.

  The fineness of the ripple yarn, which is important in the present invention, is preferably in the range of 1.5 to 5 times based on the base yarn. However, if consideration is given to misalignment of the boundary between the ripple yarn and the base yarn, productivity, and the like. Two to four times is a more preferable range.

  Moreover, when the spacing between the ripple yarns is a woven sheet, it is more preferable that the spacing is a lattice arrangement within the range of 1 to 3 cm, even if it looks good. It should be noted that even a design that gives more ripple spacing and differences can be freely configured according to the user's request.

  Fig. 1 shows an example of a woven fabric with the above content. Ripple yarns are arbitrarily arranged at regular intervals while forming a mesh structure using the same base yarns. is there. The structure intersections are bonded to each other with a low fusion fiber.

  The other low-melting-point yarn for the flame-retardant original yarn is preferably proportionally thicker, while the flame-retardant original yarn is thicker in order to ensure performance without reducing the meshing effect. The proportion is preferably 20 to 50% by weight. The same applies to the case of constituting a ripple yarn.

  When the ratio to the flame-retardant yarn is less than 20% by weight, the adhesion area is reduced when the low-melting-point yarn is made into a resin, and the result is that the sealing effect is weakened and impaired.

  On the other hand, if the ratio exceeds 50% by weight, the resin surface expands greatly, the voids of the mesh are overfilled, and the sheet becomes coarse, so it is difficult to obtain the texture characteristic of the present sheet as indicated above. In addition, the foldability and the like are poor and the handling property is poor, which is not preferred by the installer. Therefore, the composite ratio is more preferably in the range of 20 to 40% by weight.

  In order to form a composite of such a flame-retardant yarn and a low-melting yarn, first, a simple alignment form can be considered.

  This method is different in the fineness difference, nature and performance, so that during knitting and weaving, for example, in the warping process of the woven fabric, the unevenness of the beam surface due to the difference in fineness, the workability of passing through two at the same time, Even though the processability is completely unsatisfactory due to looseness of the warp, poor opening, and thread breakage when supplying the weft, the low melting point yarn is separated from the flame-retardant primary yarn in the fusion-stopping set, even if the raw machine is barely made. , Decrease effect of adhesion of mesh, move between gaps of mesh structure, fill mesh mesh and deteriorate quality, or spread resin film and deteriorate air permeability and impair mesh characteristics However, it is difficult to obtain a good quality and quality with good uniformity, which is not preferable.

  Further, as a composite of both yarns, a mixed fiber-entanglement method using air pressure can be employed. Although this method can reduce the cost by increasing the speed, this method is not preferable because the difference in form of convergence between entanglement and non-entanglement is not necessarily the preferred direction for the quality of the mesh structure. .

  However, in the present invention, it is preferable to combine two yarns of the flame-retardant original yarn and the low-melting yarn by twisting as a composite of the flame-retardant original yarn and the low-melting yarn.

  According to this twisting method, the tension at the time of twisting can be easily managed, and the twisted structure of the two yarns in the twisted structure can be made extremely uniform. Further, in the subsequent steps, the warping beam is leveled and the tension is uniformized during weaving and weaving, so that thread breakage and troubles are less likely to occur and the process passing and workability are improved. Further, in the fusion set, the leveling of the mesh structure and the effect thereof are extremely excellent, and greatly contribute to the improvement of the quality and quality of the resulting knitted fabric mesh sheet.

  There are various types of twisting yarn methods, but a method that is good for them is selected without questioning equipment and manufacturers, and the twisting conditions may be set in the range of 40 to 150 t / m in consideration of economy.

  For each manufacturing process equipment, normal equipment is sufficient for twisting, warping and weaving.

  However, the weaving method will be described as an example. To achieve a better balance in the vertical and horizontal directions in the form of the mesh sheet, and to pursue the smoothness of the mesh density and to ensure strength performance, wefts during weaving It is also important to control the driving tension at a high level and to consider and adjust the mesh and ripple so that the balance of the mesh and ripples is not lost during heat setting. By taking measures at the time of weaving and weaving, it becomes possible to better minimize the difference between the vertical and horizontal characteristic values.

  These composite yarns are used to form a knitted fabric. Such knitting may be either flat knitting, circular knitting, or warp knitting, and it is properly used depending on the total fineness of the supplied composite yarn. Since it cannot be said that a form that is easy to stretch as a building sheet for construction is used, in general, there are many cases in which knitting is performed by a Russell knitting machine with less occurrence of tearing and run defects.

  Rapiers and sulzer looms are mainly used as the woven fabric, and the texture is a plain woven fabric, imitation cloth, cocoon, and meshed woven fabrics thereof.

  In addition, it is the most efficient when the ripple dedicated yarn has a base yarn alignment configuration.

  If it is in the range of 2 to 4, the same warp / beaming of the warp can be performed, and the drawing can be drawn at the time of threading, which is an economically preferable direction from the viewpoint of productivity and cost.

  However, there is a slight disadvantage in terms of workability and cost when it is desired to twist the ripple yarn without arranging it, or when a special yarn having a higher fineness is used.

  The mesh knitted fabric obtained as described above is guided to a heat-set processing machine for closing. It is put into a heat set processing machine adjusted to a temperature range higher than the melting point temperature of the low-melting yarn, the low-melting yarn is melted, and the intersecting point of the knitted fabric is fused in this molten state.

  From the viewpoint of manufacturing, the fusion set processing machine is also a general facility, but a flexible facility that can be set at a processing speed of 10 to 50 m / min and a temperature of 160 to 200 ° C. is effective.

  Fusing / connecting structure technology to observe the performance of low-melting yarns and to fully demonstrate the effect of resin adhesion without impairing the deterioration of the flame-retardant original yarns in response to demands for good mesh texture, texture, and strength performance The point is to determine and set the set temperature.

  That is, it is more preferable that the set temperature is within a range of 170 to 200 ° C. in which the polyester-based flame retardant original yarn does not deteriorate and the fusion performance of the low-melting yarn is sufficiently exhibited.

  Cooling of the mesh sheet after continuous heat-set processing does not require special cooling conditions and may be naturally cooled.

  Further, in the present invention, when the heat setting process is performed, the light resistance agent is dipped and attached by an accessory device, and drying-curing / fusion is continuously processed to exhaust the light resistance agent. Therefore, it is possible to improve performance with higher light resistance.

  Since the curing mesh sheet is installed outdoors, sunlight, that is, ultraviolet rays, will affect the performance deterioration of polyester fibers and other synthetic fibers. The performance that can withstand long-term aging can be suppressed.

  As this light-resistant agent, for example, Cibafast-P of Ciba Specialty Chemicals Co., Ltd. is used, and can be exhausted into a polyester fiber or other synthetic fiber by the above method. Furthermore, for example, “Anti-Fade”: Meisei Chemical Industry Co., Ltd., triazole type, “Sun Life”: Nikka Chemical Co., Ltd., etc. can be used, and even those from other manufacturers can be used effectively.

  That is, the effect of the knitted fabric sheet structure in the performance after super UV irradiation 63 ° C. × 5 hours, respectively, according to JIS L 1096 general fabric test method A method: labeled strip method and C method: trabezoid method, respectively The tensile strength is improved and maintained at a level of 250 N / 3 cm for both vertical and horizontal, or higher, and the tear strength is improved to 50 N level for horizontal and horizontal, or higher.

  In addition, vinyl chloride products exhibit inferior properties such as inferior tear strength, rigidity in winter, ease of tearing in winter, difficult handling, and the like, but they exhibit excellent performance in long-term use. The tensile strength evaluation results after 10 hours of more severe UV irradiation to bring it closer to that will also be described in the examples.

  As described above, in order to analyze the above-mentioned problem in detail and to solve the problem, by using and accumulating the technology of the present invention, the Group II standard established by the temporary industry association has been achieved.

  That is, the initial performance of the knitted or woven fabric is that the tensile strength in the method A (labeled strip method) of JIS L 1096 general woven fabric test method is 490 to 800 N / 3 cm for both vertical and horizontal, preferably the initial tensile strength characteristics Both vertical and horizontal are 590 N / 3 cm or more, and the tear strength in the test method C (Travezoid method) is 90 to 400 N for both vertical and horizontal, and super UV irradiation is 63 ° C. for 5 hours. As for the later performance, the tensile strength according to the JIS evaluation method is 250 to 500 N / 3 cm for both vertical and horizontal, and the tearing strength is 50 to 200 N for both vertical and horizontal.

  The upper limit performance has been described above in the problem solving means. However, the physical properties are limited because there are limitations on the thickness of the yarn due to the physical properties and potential of the polyester fibers and the required concept for the mesh sheet. Of course, the same is true for tear strength performance.

  The high-quality and high-performance mesh sheet obtained by the present invention can be sewn, fixed, and used as a cured mesh sheet to contribute to improving the safety environment and social benefits at the construction site.

  The curing mesh sheet of the present invention is preferably a type II curing mesh for low-housing construction, that is, a curing mesh for housing up to a three-story house for ordinary households.

  EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples.

In addition, the measuring method of the various characteristics described in this invention is based on JISL1096A and JISA8952 method. In addition, the unique evaluations and standards related to Class II building construction sheets are based on the measurement methods and standards of the Temporary Industrial Association and the Japan Flame Protection Association.
[General characteristic evaluation: as shown in Table 1]
Based on JIS L 1096A, JIS A 8952 method, and Temporary Industrial Association, Japan Flame Retardant Association's measurement standards for building construction sheets.

Each characteristic value has a difference and variation in the length / vertical direction and the width / horizontal direction. Therefore, tensile strength and tearing strength (vertical × horizontal) ^1/2 > are parameterized as management characteristic values. This is because the management method data in the vertical and horizontal directions are not consistent, so it is more important to express them in total and the performance display is easy to understand.
[UV evaluation]
Sampled after irradiation for 5 hours under the conditions of 100 mW / cm ² , 63 ° C., 50% RH with a Suga Super UV tester, tensile strength in A method (labeled strip method) of JIS L 1096 general fabric test method, The tear strength in the method C (trapezoid method) of the JIS L 1096 general fabric test method is measured vertically and horizontally (n = 3).

In the present invention, each physical property is captured in a planar manner, and is defined as a characteristic value by a calculation formula of (vertical × horizontal) ^1/2 (the tensile strength is the SS value and the tear strength is the TS value).

  In addition, the retention rate is measured by using the initial performance as a reference / management value, and the value of (UV evaluation value / initial value) × 100% is indicated as the retention rate with the data after 5 hours of UV irradiation.

[Halogen gas measurement]
A sample with an HBr gas generation amount of 0.5 g is collected according to JIS L 1068 method.
This sample is put in a combustion tube, preheated at 350 to 400 ° C. for 5 minutes, and then ignited at 800 ± 30 ° C. for 30 minutes, and the combustion gas is collected in a flask containing 1/10 NaOH solution. HBr contained therein is quantified by ion chromatography.

[Comparative Example 1]
Blue containing 20% by weight of a pigment prepared by blending a polyethylene terephthalate master chip copolymerized with 0.5% by weight of a phosphorous compound as a coloring pigment with a cyan blue and carbon ratio of 2.0: 0.1. A 2.5% by weight chip blend of chips containing system-based colored chips in a ratio of 40: 1 to the master chip is melted at 290 ° C. Next, a spinning-spinning process was obtained to produce a polyester fiber, that is, a polyester flame retardant primary yarn 470 dtex-48 filament (fil).

  On the other hand, as the polylactic acid fiber, a highly oriented undrawn yarn 118 dtex-24fil was produced from a polylactic acid chip having a melting point temperature of 170 ° C. and a refractive index of 1.45 at a spinning temperature of 220 ° C. and a processing speed of 3300 m / min. Thereafter, both yarns are put on a ring twisting machine, and a twisting process is performed at a twist number of 100 t / m.

  A warp beam for weaving with a total length of 1416 and a 195 cm width was prepared after warping in order to make a mesh sheet fabric using the composite yarn after twisting.

  This warp beam was set on a through-the-loom, and the same composite yarn as the warp was driven into the weft yarn, and a mesh production machine with a weaving density of 18 yarns / in was obtained for both weft and weft.

  Next, this mesh production machine is led to a clip tenter heated to 185 ° C., and the polylactic acid fiber melts and the intersection of the polyester yarn can be fused and set at a processing speed that can contribute to a heat setting effect of approximately 25 seconds. A mesh sheet was produced.

  The mesh sheet obtained by the production method, as shown in Table 1, although the initial tensile strength does not reach the temporary industry association standard value (but not a guaranteed value) slightly (590 N / 3 cm), Ensure JIS standard or higher. The tear strength shows excellent performance that is not inferior to that of vinyl chloride, which is currently the most versatile product.

  However, in the case of the comparative example 1, since it remains a concern that the tensile performance does not satisfy the temporary industry association standard, the importance of the ripple design of the present invention has been reached.

  Practically, since the weight of the dough is light and the construction is easy, the workability is extremely easy, the tearing strength is high, the toughness and the stickiness are obtained, and an excellent safety is obtained.

  Furthermore, when it is incinerated, it does not generate dioxin, which is a harmful gas, and is not polluted with the air. Therefore, it is a product that is friendly to the global environment and has a greater dehalogenation feature than vinyl chloride products.

[Example 1]
The process from the production of the raw yarn to the twisting process is the same as in Comparative Example 1. The mesh fabric has the same mesh / ripple spacing of 1.45 cm, and the ripple yarn has three warp yarns on the base.

  First, in order to obtain a ripple woven fabric having a mesh size of 1.45 cm, a warp beam having 1670 composite yarns in which the total number of warp yarns was increased from 1416 to 264 was prepared.

  The three lip yarns were threaded so that they could be arranged at 1.45 cm intervals as separate rib frames for the purpose of aligning three lip yarns. The above warp beam is applied to a through-the-loom, and only the weft yarn that becomes the ripple yarn of the ripple structure is the same combination as the base yarn, and three of them are twisted at 50 t / m, Weaving mesh sheet forming machine to form a ripple structure.

  Next, this mesh sheet generator was guided to a pin tenter whose temperature was raised to 190 ° C., and the polylactic acid fiber was melted to produce a mesh sheet in which the warp / width intersection of the polyester original yarn was fused and set.

  As shown in Table 1, the mesh sheet obtained in this configuration was a performance / product that could sufficiently clear the initial tensile strength from the standard value (590 N / 3 cm) of the temporary industry association.

  Furthermore, when it is incinerated, it does not generate harmful gases and is not polluted with air, so it is a product that is friendly to the global environment and has a significant dehalogenation feature compared to vinyl chloride products.

[Example 2]
After obtaining a curing mesh sheet production machine in the same manner as in Example 1, it was decided to try a measure to improve light resistance for the purpose of further improving important performance and improving retention rate.

  The feature of the present invention by this measure is that Cibafast-P of Ciba Specialty Chemicals Co., Ltd. is selected as a light-resistant agent in order to improve light resistance, and 5 wt% is dipped and dried. / Cibafast-P is exhausted into the polyester fiber by curing. At this time, the set temperature was raised to 190 ° C., and fusion / resinization was simultaneously performed continuously. Another advantage is that the initial tensile strength and retention rate are improved, and the cost burden is light.

The mesh sheet thus obtained can achieve higher performance than that of Example 1, and the reliability as a safety member is further deepened.
Furthermore, in the tensile strength evaluation results after super UV irradiation 63 ° C. × 10 hours, the strength retention without the addition of the light-proofing agent reaches 20% or less, but reaches 40% or more due to the light-proofing agent effect. Comes out as a big feature.

  There was no problem in terms of environment due to the addition of a light-resistant chemical, the weight of the fabric was light, and the construction was easy because it was easy to work, and it was tough and sticky, so the safety was excellent.

  Similarly, when it is incinerated, it does not generate dioxin, which is a harmful gas, and is not polluted with the air, making it a product that is friendly to the global environment and possesses significant dehalogenation characteristics compared to vinyl chloride products.

[Comparative Example 2]
A vinyl chloride mesh sheet was manufactured by obtaining the following processing steps.

  After melting the polyester chip, a polyester multi-fiber 250 dtex-24fil was manufactured in a spinning-spinning process. A warp beam for weaving 195 cm wide was prepared with 1840 total warp yarns of the polyester yarn. This warp beam was applied to a through-the-loom, and the same polyester yarn was used as a weft to weave a mesh sheet producing machine having a weave density warp / width and the same 24 / in plain structure.

  Next, the polyester fiber fabric is dipped and squeezed into a solution in which a flame retardant using 10% by weight of antimony trioxide and 12% decapromodiphenyl oxide based on vinyl chloride resin is added, and then cured at a high temperature of 200 ° C. -A cured mesh sheet was produced by coating vinyl chloride resin in a continuous cooling facility.

  As shown in Table 1, the initial tensile strength of the mesh sheet obtained above did not reach the standard value (590 N / 3 cm) of the temporary industry association. In addition, the tear strength was not equivalent to that of the embodiment of the present invention although the standard value was cleared.

  However, the performance after UV irradiation for 5 hours was characterized in that both properties were excellent in retention.

  In terms of practical use, it is a general-purpose product, and it seems that handling will not be difficult from the past and actual use, but because the product weight difference is large by about 50%, transportation and transportation to high places Naturally, the quantity is limited, which is a big disadvantage compared to the present invention.

  Furthermore, the product is in that a halogen element is generated as a major difference from the characteristics of the present invention. As a disposal method when it can no longer withstand use, there is no problem when it is landfilled, but when incinerated, it was confirmed that halogen gas (HBr) 28 mg / g was generated in actual measurement.

  The raw yarn / fabric configuration and mesh sheet evaluation results are summarized in Table 1 for both Examples and Comparative Examples.

It is an organization chart showing an example of a ripple organization at the time of taking the textile fabric concerning the present invention as an example.

Explanation of symbols

A: Ripple yarn (vertical)
A ': Ripple yarn (horizontal)
B: Base thread (vertical)
B ': Base thread (horizontal)
C: Ripple interval (vertical)
C ': Ripple interval (horizontal)
D: Tissue intersection = adhesion point

Claims (4)

It is composed of a knitted or woven fabric with a ripple structure using a composite yarn of a flame retardant primary yarn not containing a halogen element and a low melting point yarn, and the intersection of the knitted fabric or woven fabric is noticed by fusing the low melting point yarn. In the cured mesh sheet, the ripple yarn constituting fineness of the ripple structure is 1.5 to 5 times the fabric base yarn constituting fineness, and the distance between the ripple yarns is in the range of 0.5 cm or more. Curing mesh sheet characterized by that. The tensile strength of the knitted fabric or woven fabric in JIS L 1096 general woven fabric test method A (labeled strip method) is 490 to 800 N / 3 cm for both vertical and horizontal, and the test method C (travezoid method) The tear strength at 90 and 400 N for both vertical and horizontal is maintained, and the performance after 63 ° C. × 5 hours of super UV irradiation is as follows. The tensile strength according to the JIS evaluation method is 250 to 500 N / 3 cm for both vertical and horizontal. The tearing mesh sheet according to claim 1, wherein the tear strength is 50 to 200 N for both vertical and horizontal. When the heat-set process is performed, the low-melting-point yarn is bonded by dipping the light-proofing agent before the process, and then exhausted by drying and curing to obtain resin fusion. The curing mesh sheet according to claim 1 or 2, characterized by the above. The curing mesh sheet according to any one of claims 1 to 3, wherein the curing mesh sheet is a type II curing mesh for low housing construction.

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