JPS62149938A - Canvas cloth - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to canvas used for ships and the like.

(Prior Art) A very important aspect of making sails is to produce a sail that absorbs maximum stress with minimum distortion. This is accomplished by cutting the fabric into panels such that the yarns of the fabric run parallel to the stress direction of the sail. Near the corners of the sail, stress lines generally extend radially outward from the corners. It is therefore an object of the invention to construct a sail fabric with yarns that are approximately equal to the stress distribution at the corners of the sail and extend radially outwards.

SUMMARY OF THE INVENTION As stated above, the present invention is directed to a sail fabric that incorporates warp yarns that extend radially outward from a central tip. The canvas is made of warp threads adhesively bonded to the sides of a stable plastic sheet, or warp threads bonded between two stable plastic sheets, or warp threads bonded between two stable plastic sheets. It consists of warp threads that are connected between the stabilized plastic and the fabric, or warp threads that are joined together with the weft threads and are joined at the intersection with the weft threads.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 4, a typical triangular shaped sail is shown. The three corners 12, 14, i6 of the sail are
It consists of a truncated triangle constructed according to the invention with warp threads extending radially. At the tip 16 of the sail, the panels 22 are 3
Four panels 24 are provided at the windward corner 14, and four panels 26 are provided at the crew corner 12. The panels 18 are sewn together parallel to each other along their adjacent edges. The sail body 28 consists of panels 30 of conventional fabric, the warp threads 32 of which are parallel. Assembled in this manner, the radially extending warp threads 20 of the panels forming the sail corners carry the tensile loads from the sail body to the sail corners. This allows for control and reduction of sail distortion, tension, and sail warping. As mentioned above, there are three triangular panels at the tip of the sail,
There are four triangular shaped panels in each lower corner of the sail. However, there may be more or fewer panels at the top and bottom of the sail.

According to the present invention, the warp threads 20 of the above-mentioned crowned triangular panel
are arranged so that the warp threads 20 extend radially, that is, each warp thread 20 branches toward the base of the panel. The tip and lower triangular panels of the sail each carry warp threads 20 arranged radially, as shown in FIG.
In addition, it is constructed by fixing the warp yarns 20 to the substrate P. The substrate P may be made of a plastic sheet. The warp threads 20 are adhesively fixed to this plastic sheet. Optionally, the radial alignment of the warp threads 20 may be inserted between two plastic sheets, as shown in FIG. 1A, or between the plastic sheet 1- and the fabric F, as shown in FIG. 1B. It may be inserted into. FIG. 2 is a diagram showing that the radially extending warp threads 22 are integrated in a general woven fabric F consisting of warp threads 20 and stuffing threads, or weft threads 34. FIG. 3 shows a fabric in which radially extending warp threads 20 cooperate with weft threads 36 and are adhesively fixed at their intersections.

The warp threads consist of an array of radially extending lengths of thread, each arranged radially with respect to each other, and either bonded to the substrate or using warp guides 38 with different sensibilities as shown in FIG. This allows it to be integrated into the fabric. Such a composite structure is cut and finished to the appropriate length and shape (Fig. 5) according to the arrangement of the sail structure.

The threads may be natural or synthetic, and the sheet material is preferably a stable plastic material such as Dacron.

[Brief explanation of drawings]

FIG. 1 is a partial plan view of assembled manufacturing members in which the warp threads are bonded to a film-like substrate and are attached to the substrate in a radial arrangement;
FIG. 1A is a partial cross-sectional view of the warp threads arranged between two films, FIG. 1B is a partial cross-sectional view of the warp threads arranged between the film and the fabric, and FIG. Figure 3 is a plan view of the assembled panel showing that the warp threads are arranged radially on the weft substrate and are adhesively fixed at the intersections with the weft threads. Figure 4 is a plan view showing how the fabric is used to form the corners of the sail in order to provide effective use of the warp threads given the stress concentration at the corners of the sail; FIG. 5 is a diagram showing the structure of a continuous panel, and FIG. 6 is a diagram showing the structure of warp threads arranged in a radial arrangement. 12.14.16...corner, 1.8,22,2
4.30...Panel, 28...Body,
32... Warp.

Claims (8)

[Claims] (1) adhesively bonded to a stable plastic sheet;
A canvas characterized by having a plurality of radially extending warp threads. (2) A canvas characterized by having a plurality of radially extending warp threads adhesively bonded between two stable plastic sheets. (3) A canvas characterized by having a plurality of radially extending warp yarns bonded between a stable plastic sheet and a fabric. (4) A canvas characterized by having a plurality of radially extending warp threads that are adhesively bonded to the weft threads. (5) A canvas having triangular panels characterized in that it consists of a structure assembled to form an array of threads that diverge from each other from the tip to the base. (6) A canvas having truncated triangular panels, characterized in that it consists of a stable sheet of material adhered to one side of the layer by an array of yarns each branching from the tip to the base. (7) A canvas having a panel in the shape of a truncated triangle, characterized in that it is made of a stable fabric in which the alignment of warp threads that diverge from each other from the tip to the base is integrated. (8) A canvas having a panel in the shape of a truncated triangle, characterized in that the warp threads branch from each other from the tip to the base and are fixed at the intersections of the warp threads and the weft threads.