JP5988016B2 - Non-combustible sheet used for advertising panels using glass woven fabric - Google Patents

Description

The present invention relates to a non-combustible sheet used for a panel using a glass woven fabric obtained by weaving glass fiber yarn as warp and weft.

  Glass woven fabrics made by weaving glass fiber yarns as warps and wefts have been proposed for use in various applications because of excellent properties such as non-combustibility. And the present applicant also uses warp yarn instead of the conventional synthetic resin film such as polyester resin as the base material of the image sheet for forming the advertising panel etc. disposed in the station premises, hotels, department stores, etc. An image sheet (an example of a non-combustible sheet) using a glass woven fabric woven in a general plain weave having a right angle with the weft has been proposed (see Patent Documents 1 and 2 below).

JP 2007-203724 A JP 2010-042587 A

  However, in the above proposed sheet, the non-flammability, which was the main purpose by adopting the non-combustible glass woven fabric, could be sufficiently obtained, but the tear strength was a conventional sheet using a synthetic resin film as a base material. There was still room for improvement in this respect.

The present invention has been made in view of the above-mentioned actual situation, and its main problem is to use a glass woven fabric having a high tear strength even in a single-layer structure by a reasonable improvement, and to be a non-combustible material used for a panel. It is in providing a sex sheet.

〔Constitution〕
A first characteristic configuration of the present invention is a non-combustible sheet used for an advertising panel using a glass woven fabric obtained by weaving glass fiber yarns as warps and wefts, wherein the crossing angle between the warps and the wefts is set. A glass woven fabric set at an angle other than a right angle is coated with a resin material, and the warp and the weft are along a direction that is not orthogonal to the outer frame of the advertising panel.

  The second characteristic configuration of the present invention resides in that weaving is performed by setting an intersecting angle between the warp and the weft to 30 to 60 degrees.

[Action / Effect]
As a result of the research, the present inventor found that when weaving with the crossing angle between the warp and the weft set to an angle other than a right angle, weaving with the crossing angle between the warp and the weft set to a right angle is performed. It was found that the tear strength was greatly increased.

  This is because, for example, when an external force is applied in a state of tearing along the warp direction, the weft is tilted from the direction orthogonal to the tear direction. Increase in cross-sectional area, increase in weft strength due to increase in cross-sectional area, etc., so that wefts slide on the warp along the tear direction before breaking, tear from weft to warp side along the weft inclination Although an action such as part of the force being guided can be considered, the presence of the yarn in a posture along a direction not orthogonal to the tearing direction has become an important factor for increasing the tearing strength.

  Therefore, if the glass fiber yarn is woven by setting the crossing angle between the warp yarn and the weft yarn to an angle other than a right angle, it is along any direction of the surface direction including the warp direction and the weft direction. Even if an external force is applied to the torn state, either the warp or the weft exists in a posture along a direction that is not orthogonal to the tearing direction, so that it has a high tear strength in all directions even though it is a single layer structure. can do.

Sectional drawing which shows an example of a layer structure of a nonflammable sheet | seat typically Surface view showing part of a glass woven fabric A perspective view schematically showing a part of a glass woven fabric

  FIG. 1 shows a layer structure of a printing sheet 1 (an example of an image sheet, an example of a non-combustible sheet) used for an advertising panel or the like. The sheet 1 includes a translucent or milky white substrate 2, The outer resin layer 3 disposed in a laminated state on the front side and the back side of the base material 2 is configured to have appropriate light transmittance and light diffusibility through which illumination light from the back side is appropriately transmitted.

  The base material 2 is made of a urethane-based resin by impregnating the glass woven fabric 4 with an appropriate amount of urethane-based resin (an example of a resin material) so as to bind the glass-woven fabric 4 without fraying. The inner resin layer 5 is coated.

  The outer resin layer 3 coats the front side and the back side of the base material 2 by applying a certain amount of acrylic resin (an example of a resin material) containing titanium oxide and silica to the front side and the back side of the base material 2. It consists of

  In addition, the thickness dimension T2 of the base material 2 is set to about 150 to 250 μm, and the thickness dimension T5 of the resin layer 5 is set to about 20 to 40 μm.

  As shown in FIGS. 2 and 3, the glass woven fabric 4 has an angle other than a right angle with respect to the intersecting angle α between the warp 4a and the weft 4b (that is, the intersecting angle between the warp direction Da and the weft direction Db). Weaving is set to. The intersection angle α is preferably in the range of 30 degrees to 60 degrees, and 45 degrees is adopted in this example.

  In other words, the glass woven fabric 4 has an intersecting angle α between the warp yarn 4a and the weft yarn 4b set to an angle other than a right angle so that any direction in the surface direction (direction along the surface) becomes the tearing direction. The warp yarn 4a and the weft yarn 4b are configured to exist in a posture along a direction that is not orthogonal to the tearing direction, and this is high in all directions in the plane direction even though it has a single-layer structure. Demonstrate tear strength.

  The glass woven fabric is made of, for example, glass fiber yarns of 60 to 80 TEX (TEX = 1000 × weight of yarn (g) / length of yarn (m)) composed of a large number of single fibers. And a predetermined weave density (specifically, the warp 4a is 45 to 55 yarns / 25 mm and the weft yarn 4b is 45 to 55 yarns / 25 mm).

  Further, the glass woven fabric 4 is a weaving method in which the weft yarns 4b are driven along the weft direction Db having the intersecting angle α with respect to a plurality of warp yarns 4a arranged in parallel in a posture along the warp yarn direction Da (in short terms, simply speaking). , Modified plain weave).

  Since the printing sheet 1 configured as described above has high tear strength in addition to non-flammability, it can be particularly suitably used for outdoor advertising panels and the like on which external forces such as wind pressure act.

[Another embodiment]
In the above-described embodiment, as an example of the incombustible sheet according to the present invention, the printing sheet 1 for forming a printed image is shown as an example. However, a printing sheet for printing a photographic image (the layer sheet) For example), an image sheet on which a printed image or a photographic image is applied, a smoke-proof sheet, or the like. In short, any sheet may be used as long as it is non-flammable.

  In the above-described embodiment, the case where the two resin layers 3 and 5 are formed on the front side and the back side of the glass woven fabric 4 to form the non-combustible sheet is shown as an example. The above resin layer may be formed.

  In the above-described embodiment, the case where the resin layers 3 and 5 are formed on both the front side and the back side of the glass woven fabric 4 to configure the incombustible sheet has been shown as an example. For example, only one of the front side and the back side is shown. A resin layer may be formed.

  The specific configuration such as the thickness dimension of the incombustible sheet and the type of the constituent resin material, and the specific configuration such as the woven density and the yarn type of the glass woven fabric 4 are not limited to those described in the above-described embodiment, but various The configuration can be changed.

Non retardant sheet Ru engaged to the present invention can be suitably used as a material for various articles both nonflammable and tear strength is required.

4 Glass woven fabric 4a Warp 4b Weft α Crossing angle

Claims (2)

A glass woven fabric made by weaving glass fiber yarn as warp and weft, a non-combustible sheet used for advertising panels,
A glass woven fabric that is woven by setting an intersection angle between the warp and the weft to an angle other than a right angle is coated with a resin material,
A nonflammable sheet along a direction in which the warp and the weft are not orthogonal to the outer frame of the advertising panel.   The non-combustible sheet according to claim 1, wherein the glass woven fabric is woven by setting an intersecting angle between the warp and the weft to 30 degrees to 60 degrees.

Images