JPH0446922Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a tent area that is clear, has excellent translucency, and has a highly effective sign.

(Prior Art) Tent fabric coated with polyvinyl chloride resin has been well known. these are,
Dipping or topping polyvinyl chloride resin on a base cloth made by knitting or weaving using spun yarn or filament yarn such as vinylon, polyamide, polyester, etc.
Manufactured by coating, laminating, etc. In addition, for products that require marking power, it has been proposed to print on the resin surface or to make the structure of the woven or knitted material coarse-grained to give it translucency, but the clarity of the dyed object is limited. scarce, and
Since the light resistance was poor and the fibers used contained a matting agent such as titanium oxide, the transparency of the base fabric was poor and the marking effect was poor.
Furthermore, in order to obtain a clear color tone, it is possible to use fluorescent dyes, but at present, no disperse dyes or cationic dyes with excellent light fastness have been found.

(Problems to be solved by the invention) The present invention was made to solve the drawbacks of the conventional synthetic fiber tent fabric as described above.
This provides a tent area with excellent translucency, clear visibility, and highly effective signage.

(Means for Solving the Problems) The present inventors have arrived at the present invention as a result of intensive research to solve these problems. That is, the present invention provides a polyester spun-dyed yarn containing a perylene-based fluorescent dye for polyalkylene terephthalate or a polyester mainly composed of polyalkylene terephthalate, and the strength of the polyester spun-dyed yarn is 5 g/denier or more, Total fineness 150~
A woven or knitted fabric with a void ratio of 5 to 50% using polyester multifilament of 1500 denier in at least one of the warp and weft, and a polyester fiber tent fabric in which at least one side of the woven or knitted fabric is coated with resin. This is a summary.

The polyester used in this invention is required to have substantially high transparency, and as a measure of transparency, the parallel light transmittance measured according to JIS K-7105 is 70% or more, and the haze value is 70% or more. It is preferably 5 or less. The perylene-based fluorescent dye used in the present invention is disclosed in Japanese Unexamined Patent Application Publication Nos. 57-125260 and 58-125260;
Compounds such as those disclosed in Publication No. 40359 and Publication No. 60-203650 may be mentioned, and two or more of these may be used in combination, or other pigments may be used in combination.

Pigments used in combination with perylene-based fluorescent dyes include heat-resistant organic pigments such as anthraquinone-based, phthalocyanine-based, and polyazo-based pigments, as well as ultramarine blue, cobalt blue, cadmium yellow, cadmium red,
This includes inorganic pigments such as chrome green.

The method for producing the spun-dyed polyester yarn in the present invention is to mix a predetermined amount of these pigment powders or master chips into highly transparent polyester chips, and melt-spun and stretch the yarn by a conventional method. The perylene fluorescent dye contained in the polyester spun-dyed yarn is preferably contained in an amount of 0.001% by weight or more, particularly preferably 0.005% by weight or more. If this content is less than 0.001% by weight, the fluorescent properties of the dyed yarn will be insufficient and the identification effect in the dark field will be poor, and even if other pigments are used in combination, a tent fabric with a high marking effect will not be obtained.

In addition, it is also possible to further improve the labeling effect by appropriately using an organic pigment or an inorganic pigment in combination depending on the purpose. The content of this pigment in the spun-dyed yarn is preferably 0.01% by weight or more.

Next, from the viewpoint of the strength required for tent fabric, the tensile strength of the polyester spun-dyed yarn was 5 g/
d or more is required. If it is less than 5 g/d, a sufficiently strong woven or knitted fabric with a high void ratio cannot be obtained.

In order to obtain a highly transparent woven or knitted fabric, it is necessary that the vacancy rate of the fabric be 5 to 50%. Here, the vacancy ratio refers to the area ratio of the space that passes through the woven or knitted fabric when parallel light rays are applied to the woven or knitted fabric, and specifically, it is determined by the following formula.

Vacancy rate = space area / (space + fiber) area x 100 (
%) In the case of a tent site, if the vacancy rate is less than 5%, the translucency will be insufficient and the effectiveness of the sign will be poor. On the other hand, if it exceeds 50%, although it is excellent in terms of translucency, it is not preferable because it tends to cause misalignment in the woven or knitted fabric and is inferior in terms of dimensional stability and strength.

The fineness of polyester dyed yarn is 150~150 from the viewpoint of physical properties of woven or knitted fabrics required for tent fabrics and translucency.
1500 denier multifilament is used. If it is less than 150 denier, it is necessary to increase the number of warps and wefts constituting the woven or knitted fabric in view of the physical properties of the tent fabric, resulting in poor translucency and cost. On the other hand, if it exceeds 1500 denier, it is possible to reduce the number of warp and weft yarns, but the fineness is large, so the weight is high, and the thickness at the intersection or node of the warp and weft is large, so resin coating is required. Particularly in the case of film lamination, spot adhesion is likely to occur, resulting in poor durability. The tent fabric of the present invention is made of spun-dyed polyester yarn containing the above-mentioned perylene fluorescent dye and having a strength of 5 g/d or more.
Although it may be a 100% woven or knitted fabric, it may be used only for either the warp or the weft from the viewpoint of pattern effect. However, when used in combination with other fiber materials, it is desirable that the other materials also have fineness and strength within the same range as the spun-dyed polyester yarn.

Next, one or both sides of the woven or knitted fabric having voids are coated with a resin. In order to obtain a tent fabric with a high marking effect and rich functionality, a highly transparent resin is required, and the polymer materials that form the resin coating layer include polyvinyl chloride resin, polyurethane resin, polyester resin, and ethylene-vinyl acetate. Copolymers, polyacrylic acid ester resins, and the like are preferred. These polymeric materials contain the required pigments, fillers,
It may also contain additives such as plasticizers and stabilizers.
Further, as a specific resin coating method, any known method may be used, such as applying it to the fabric surface by coating, spraying, etc. and solidifying it, or coating the fabric surface with a film made of the above polymer. A method of adhering or fusing can be used. The average thickness of the resin coating layer needs to be 10 microns or more. If it is less than 10 microns, the desired water pressure resistance cannot be obtained, resulting in poor waterproof performance.

Next, the tent site of the present invention will be explained using drawings. FIG. 1 shows a cross section of one embodiment of the polyester fiber tent fabric of the present invention, in which 1 is a woven or knitted fabric made of polyester spun-dyed yarn containing perylene dye, and 2 is a highly transparent resin Shows the film. FIG. 2 is an enlarged explanatory diagram of the warp and weft of the polyester fiber tent fabric of the present invention. The warp yarns 3 and the weft yarns 4 are made of spun-dyed polyester yarn containing a perylene fluorescent dye, forming a coarse plain weave fabric. The warp threads 3 and the weft threads 4 each have a distance of about 0.1 to about 15 between parallel and adjacent threads.
mm, the space is a transparent resin layer 2, and the resin layer covers at least one side of the surface of the base fabric.

As detailed above, the tent fabric of the present invention is generally used outdoors for long periods of time and is required to have light resistance. By limiting the strength and fineness of the tent fabric, the material properties of the tent fabric are satisfied, and the properties of the tent fabric are satisfied by limiting the strength and fineness, and the fabric is made of fluorescent dye and a structure with excellent translucency in terms of labeling effect and fashionability. It can only be achieved by doing so.

(Example) The present invention will be explained below with reference to examples.

Intrinsic viscosity is the value measured at 20°C by dissolving an equal weight mixture of phenol and tetrachloroethane, and parallel light transmittance and haze value were measured at plate thicknesses of 3 mm and 4 mm according to JIS K 7105 method. It is a value.

Example 1 Intrinsic viscosity 1.02, parallel light transmittance 99%, haze value 1%
polyethylene terephthalate chips
Fluorescence Orange 240 0.015% by weight and pigment Cadmium Yellow 0.04% by weight were dry blended and supplied to an extruder type melt spinning machine, melt spinning was performed at a spinning temperature of 300°C and a spinning speed of 1200 m/min, and the undrawn yarn was wound. Then, it was stretched at a stretching ratio of 4.0 times to obtain a spun-dyed polyester yarn of 250 denier/48 filaments. The obtained polyester multifilament 250 denier/48 filaments were used for the warp and weft to create a plain woven tent fabric with a warp density of 30/inch and a weft density of 32/inch. The void ratio of the fabric was 20%. Next, the plain woven fabric was relaxed and heat set at 170° C. for 1 minute using a pin tenter, and then a urethane adhesive was applied using a gravure coating machine using a dry lamination method. Next, a 60 micron thick transparent polyvinyl chloride film was laminated to the base fabric. The obtained tent material emitted orange fluorescent light, was clear, had a high marking effect, and was also excellent in terms of light resistance and waterproofness.

The polyester fiber tent fabric obtained in the above example can be used not only for the conventionally used eaves tent but also for advertising purposes. That is, create a box shape, put a light bulb inside it, use the tent fabric of the present invention instead of a transparent acrylic board or transparent vinyl chloride board, and design letters and figures on the surface using a woven or knitted fabric. You can get something that is durable and feels like a fabric. Furthermore, unlike conventional resin plates, this plate is light in weight, so it is economically advantageous.

(Effects of the invention) The tent fabric of the invention is clear and has excellent translucency, so it has excellent signage effects, and is also highly durable as a tent material, making it widely usable. .

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a polyester fiber tent fabric, and FIG. 2 is an enlarged explanatory diagram of the warp and weft of the polyester fiber tent fabric. 1... Woven and knitted fabric, 2... Resin film, 3... Warp, 4... Weft.

Claims (1)

[Claims for Utility Model Registration] (1) A polyester spun-dyed yarn containing perylene-based fluorescent dye for polyalkylene terephthalate or polyester mainly composed of polyalkylene terephthalate,
and a woven or knitted fabric with a void ratio of 5 to 50%, using polyester multifilament of which the strength of the polyester spun-dyed yarn is 5 g/denier or more and a total fineness of 150 to 1500 denier is used in at least one of the warp and weft. A polyester fiber tent fabric made of a woven or knitted fabric coated with resin on at least one side. (2) The polyester fiber tent fabric according to claim 1, wherein the resin is made of a highly transparent thermoplastic resin and the thickness of the resin is 10 microns or more.