JPH10183475A - Ribbed cloth for paraglider - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a ribbed cloth for a paraglider having high reliability by arranging perforated parts using synthetic fiber filament yarns as warps and wefts, weaving a ground textile design and then carrying out the resin finishing so as not to clog the perforated parts. SOLUTION: This ribbed cloth for a paraglider is produced by weaving a woven fabric of 30-50g/m<2> METSUKF (mass per unit area) having a ground textile design and a plurality of perforated parts 2 according to an imitation gauze, etc., carrying out the scouring, heat-setting and dyeing processing, subsequently immersing the resultant woven fabric in a polyurethane-based resin solution and then drying and solidifying the resin solution while blowing an air stream thereon so as not to clog the perforated parts 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paraglider rib cloth which flies in the air by utilizing aerodynamic resistance with wings composed of canopies and ribs.

[0002]

2. Description of the Related Art In recent years, gliding sports such as paragliders have become popular. A paraglider is composed of two upper and lower cloths that form a canopy, and a rib that connects them. The rib cloth used for the rib is
A canopy cloth is used as a substitute, a canopy cloth having a hard texture, or a special cloth having a reduced elongation in the bias direction is used.

A paraglider can fly in the air by receiving a lift caused by a difference in air flow velocity between the upper and lower surfaces of the wing. The canopy cloth constituting the upper and lower surfaces of the wing has low air permeability and low air resistance on the cloth surface.
The front edge of the canopy is provided with an air intake that is open to take in air, and the rear edge is closed so that air accumulates on the wings. The rib is a skeleton that maintains the shape of the wing, and the rib is provided with an air passage hole called a side vent hole. This air passage hole has the function of restoring the deformed wing to its original state by moving the air inside the wing left and right when controlling the paraglider to turn, ascend, descend, etc.

FIG. 3 is a schematic longitudinal sectional view of a paraglider. Side vents that provide air ventilation to the ribs 5 that connect the canopy between the upper surface 3 and the lower surface 4 forming the canopy
A hole 6 is provided to take in air from the air intake 7 and send air to the crushed wing portion through the side vent hole 6 to recover the crushed wing.

A harness 9 is suspended from the canopy via a suspension line 8. A driver can ride on the harness 9 and operate the suspension line 8 to operate a paraglider.

The rib cloth is provided with a number of holes as shown in FIG. Drilling is a very time-consuming task, varying in size depending on the location. Generally, a hole is cut out in a circular or oval shape with a sharp blade. When the rib cloth is cut with the blade as described above, a flaw is easily left on the cut end portion, and there is a problem that the rib cloth is easily torn due to the flaw. The ribs are an important part of the paraglider skeleton. The more ribs of the paraglider, the better the shape retention of the wing. However, if the number of ribs is increased too much, the weight of the entire wing is increased, so that there is a limit. A paraglider having 30 to 60 ribs is generally used. The current rib cloth has a lot of considerably large holes because it is a cloth processed with resin that reduces air permeability. Further, at present, the physical properties of the woven fabric are not fully utilized because a large number of holes are formed by cutting out a part of the rib cloth.

[0007]

However, the above-mentioned rib cloth as described above has a problem that it is apt to be torn and is inferior in flight safety and a problem that it takes time and effort to make many holes and the cost becomes high.

SUMMARY OF THE INVENTION An object of the present invention is to provide a paraglider rib cloth which is excellent in paraglider flight safety and has simplified sewing work.

[0009]

Means for Solving the Problems As a result of intensive studies, the present inventors have found that the above problem can be solved by preparing a porous fabric having a high air permeability and processing it with a resin. The present invention has been reached. That is, the gist of the present invention is a rib cloth for a paraglider, wherein a woven fabric made of synthetic fiber filament yarn and having a perforated portion formed by a woven structure is processed with a resin.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
FIG. 1 is a rib cloth showing an example of the present invention, which is obtained by processing a woven fabric in which a perforated portion 2 is partially formed by a weave structure with a resin. The ground structure 1 has a partially rectangular perforated portion 2. The size of the perforated portion 2 is not particularly limited, but the hole diameter is preferably about 1 mm to 5 mm. If the hole diameter is less than 1 mm, there is a problem that clogging is easily caused by sand or dust, and if it is more than 5 mm, there is a problem that the seam strength is reduced when a paraglider is sewn.

The weaving structure for forming the perforated portion 2 in the rib cloth includes a mosaic weave, a garment weave, and a combination weave of the mosaic weave and the garami weave. FIG. 2 is an example of a mosaic weave that can be used as a woven structure for forming the perforated portion 2 in the present invention, and the desired perforated portion 2 is obtained by repeating the structure of FIG. 2 a predetermined number of times. Can be obtained.

The size of the perforated portion and the frequency of the perforated portion can be arbitrarily selected, and can be determined according to the intended paraglider. If the size of the hole is partially insufficient, the necessary hole can be provided by a conventional method and supplemented.

[0013] The rib cloth obtained by the conventional cross-cutting method has a problem that the warp and the weft of the woven fabric are cut so that the physical properties of the woven fabric are deteriorated. Since the perforated portion is formed without cutting the weft, the physical properties of the woven fabric do not deteriorate.

Examples of the synthetic fiber filament yarn suitable for the present invention include amide fibers and ester fibers. Lightweight, high strength, low elongation fibers are suitable for paragliders.

The resin processing of the present invention gives the cloth an effect of reducing rigidity and elongation in the bias direction.
Further, there is an effect of increasing the durability of the cloth.

Examples of the resin used for the resin processing include a polyurethane resin, an acrylic resin, and a silicone resin. The ribs are the skeleton of the canopy and need to be able to temporarily crush the wings when operating a paraglider and then quickly restore them. As the resin having the function, a polyurethane resin is particularly preferable. Polyurethane-based resins are superior in resilience to other resins.

As a method for processing the resin, a dipping method, a coating method, or the like is used, but is not particularly limited.

It is important that the rib cloth be lightweight, high-strength and excellent in shape recovery properties. Suitable are those having a basis weight of 30 to 50 g / m ² , a tear strength of 2 kg or more, a tensile strength at a width of 5 cm of 35 kg or more, and a breaking elongation of 30% or less.

[0019]

Next, the present invention will be described specifically with reference to examples.

EXAMPLE 1 A nylon 6 filament yarn having a denier of 3 deniers and a denier of 30 deniers was used for the warp and the weft, and the density of the warp having a perforated portion was 127 / inch and the density of the weft was 13 in the arrangement shown in FIG.
Eight / inch fabrics were woven. The perforated part 2 of the fabric is shown in FIG.
Based on a 30 × 22 full-textured mosaic pattern, the yarn was formed with 4.5 complete weft directions and 6 complete warp directions (135 warp yarns, 132 weft strikes). A reed density of 58 birds / whale-sized reed is used.
The repetition of book, five, five, empty wings, and empty wings was repeated. The ground structure was a plain weave, the number of warps between adjacent perforated portions was 120, and the number of wefts between adjacent perforated portions in the warp direction was 96. As a result, a fabric having a size of one perforated portion of 27 mm × 25 mm, an area ratio of the perforated portion to the plain weave fabric portion of about 1: 3, and a basis weight of 37 g / m ² was obtained. The woven fabric was subjected to ordinary scouring, heat setting, and dyeing, and then impregnated with Hydran APX-101H (urethane resin manufactured by Dainippon Ink and Chemicals, Inc.). The resin liquid is dried and solidified while blowing air to prevent clogging of the effective portion due to the urethane resin, and the cross weight is 44 g / m ^2.
Of the present invention was obtained.

Using the cloth thus obtained, a rib portion of a paraglider was formed, and when it was flown, the wing had good morphological stability and good glide.

Comparative Example 1 A warp density of 127 using a nylon 6 filament yarn having a single yarn fineness of 3 denier and a total fiber density of 30 denier as a warp and a weft.
A ripstop fabric having a weft density of 138 yarns / inch and a weft density of 138 yarns / inch was woven. The woven fabric had three ripstops for both the warp and the weft, and the inner dimensions of the lattice were 5 mm in both the warp and weft directions. The basis weight of the obtained woven fabric was 37 g / m ² . The woven fabric was subjected to ordinary scouring, heat setting, and dyeing, and then coated with Chrisbon MP-865PS (urethane resin manufactured by Dainippon Ink Co., Ltd.) by a floating method. The cloth basis weight after the resin processing was 44 g / m ² .

Using the obtained cloth, the wings were evaluated for form stability and glide based on a paraglider obtained by processing a rib portion of a paraglider by a conventional method. As a result, no difference was found between the morphological stability and the gliding property of the blade of the paraglider using the rib cloth of the present invention and the rib cloth of the conventional drilling method. However, the sewing processability of the paraglider has been considerably simplified.

[0024]

According to the present invention, it is possible to provide a highly reliable paraglider since the physical properties of the rib cloth can be utilized as it is because there is no need to drill holes during sewing of the paraglider because the rib cloth has a hole. It is now possible. Further, the work of drilling holes in the rib cloth becomes unnecessary, and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a perforated portion of a rib cloth of the present invention.

FIG. 2 is an example of a structure for obtaining a perforated portion of a rib cloth of the present invention.

FIG. 3 is a schematic longitudinal sectional view of a conventional paraglider according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ground cloth part of rib cloth 2 Perforated part of rib cloth 3 Upper surface 4 Lower surface 5 Rib 6 Side vent hole 7 Air intake 8 Suspension line 9 Harness

──────────────────────────────────────────────────の Continued on front page (51) Int.Cl. ⁶ Identification code FI B29K 105: 08

Claims (1)

[Claims] 1. A rib cloth for paragliders, wherein a woven fabric made of synthetic fiber filament yarn and having a perforated portion with a woven structure is resin-processed.