JPS5860057A - Stitch part of coase mesh sheet - 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 The present invention relates to the structure of a seam in a special coarse sheet.

Coarse sheets are generally used for windbreak nets, insect screens, etc., but their use in a wide range of fields is rapidly being considered in recent years because they inherently have characteristics such as light weight and high breathability. . However, the coarse sheets that have been provided so far are those that are made of natural fibers or synthetic fibers that are processed with resin in the form of threads and then knitted or woven, or synthetic fibers such as vinylidene chloride, polyethylene, etc. Since the monofilament was knitted and woven, the threads slid against each other, which caused the constituent threads of the Kume sheet to become loose or twisted, making it easy to impart toughness, beauty, and flame resistance. etc., the entire sheet deteriorates early and is not suitable.

The present invention first improves the coarse sheet itself, eliminates the above-mentioned drawbacks, and provides the most preferable means for sewing wide and long lengths using such a sheet.

The coarse-grained sheet according to the present invention has a structure different from that of conventional coarse-grained sheets. First, the interlining metal is made of fibrous yarns, and the yarns in the weft and warp directions in the interlining are made of thermoplastic material so that they are integrally joined at the intersections of the two. It is a coarse sheet in which resin is adhered to the entire interlining, and the integral bonding at such intersections is an important characteristic of the sheet according to the present invention.

According to this configuration, there is no slippage or thread deviation of each thread, and since there are no factors that inhibit sewing, the stitching is performed simultaneously and reliably, so the strength of the stitched portion is high. , which can have the extremely remarkable effect of having a long service life.

The present invention will be described in more detail below.

The fibrous yarn according to the present invention is made of natural fibers #i# synthetic fibers or inorganic fibers, especially / IJ ester,
Vinylon etc. are suitable. In addition, the yarn of and is spun yarn,
Filament thread, smooth thread, thread thread.

It is not limited to a tube-like thread or any other material. However, in consideration of strength, weight of the fabric, and other properties, filament yarns of ester or vinylon are particularly preferred.

These threads are arranged in the warp and weft direction, and can be woven in any way, but plain weave is common, and special fabrics such as mojishi weave and leno weave using leno yarn are also used. Furthermore, it may be knitted if necessary. In addition, the knitted interlining should preferably have a mesh area of 225 mm or less, and if the shape is square, it should be 15 m x 15 mm or less, especially 0.
．． An angle of 5 to 1° is suitable. In addition, the warp and warp yarns do not necessarily have to be arranged perpendicularly to each other; for example, the weft yarns may be arranged in a slightly arc shape with respect to the warp yarns. Even if it is not composed of eyes, it is possible to increase the strength of the part by closely arranging it in a part, for example, in the warp thread t%' at the end.

Next, in the sheet according to the present invention, the thermoplastic resin is adhered to the entire interlining to such an extent that the warp and warp threads of the interlining are sufficiently joined together at the intersections of both. It is. By attaching a thermoplastic resin, in addition to the above-mentioned effects, it imparts appropriate firmness to the entire sheet and also makes it tough.Thermoplastic resins include polyvinyl chloride, urethane resin, and ethylene-m. Acid-vinyl copolymers and others are preferable, but those mainly composed of /IJ vinyl chloride are preferred.The thermoplastic resin is attached in an amount of 50% or more, preferably 70% to 200% of the weight of the interlining.

Adhesion is achieved by immersing the interlining in the above resin solution and allowing it to dry.

It can be attached by topping, laminating or other known methods. In addition, it is preferable to add an appropriate chemical to the above-mentioned resin in order to impart flame retardant properties and other properties.

The coarse-grained sheet thus completed is strong, has a moderate amount of firmness, has flame retardant properties, is beautiful, and can be easily sutured at any location without any loose threads or rips. It is most suitable for windbreak nets, etc., which are used by connecting wide or long nets.

Next, aspects of the suture portion according to the present invention will be explained.

In order to achieve effective stitching, the final weave of the interlining in the medium-coarse sheet must be special. That is, in the sheet, the weft threads are generally perpendicular to the warp threads, as shown in FIG. 1 (4), but this is shown in FIG.
), when weft yarns are arranged in a 1 to 5 arc shape with respect to warp yarns, the number of intersections at the seam increases compared to the figure (A), and therefore The strength of the seamed portion after sewing is increased. Furthermore, as shown in the same figure (Q), one of the special M weaves is one in which the warp threads (and/or weft threads) at the edges of the sheet have a greater density than in other locations. (The illustration shows the density of the weft threads being high.) Since the strength is naturally high in this part, when this part is used as a seam part,
It can increase suture strength.

Next, the use of reinforcing pieces, which are most convenient for sewing sheets in particular, will be explained. In the case of coarse-grained sheets, the strength of the seams can be significantly increased by using appropriate reinforcing pieces, especially at the seams, so that they can be used even if the structure created by the seams is wide or long. It has been confirmed that it is possible to have strength that can withstand. It particularly promotes the stability of the υ yarns in coarse sheets and helps them maintain their shape. If there is no reinforcing piece, the Fii and i yarns will jump and float in the coarse sheet, making it difficult to maintain the shape.

Examples of reinforcing pieces include the following.

(b) The reinforcing piece is a film made of thermoplastic resin, and the reinforcing piece (m) is made by applying thermoplastic resin to both or one side of a knitted fabric or nonwoven fabric.In any of the above cases, It is preferable to use a thermoplastic resin that is the same type as the thermoplastic resin attached to the interlining or has properties similar to those of the resin.

This is because it is most convenient to use high frequency or heat fusion as a joining other than suturing, rather than using the sewing method used with twin needles or the like. In this case, it is more preferable that the interlining has a melting point higher than that of the surface-coated thermoplastic resin which exhibits fusion properties by high frequency or heat by at least 10 DEG C., preferably at least 120 DEG C. to 30 DEG C. or more.

Next, to use these reinforcing pieces, 1. At the same time, the ears of the sheet ■ are sewn to the - side of the upper (or lower) side of the reinforcing piece, and the other parts on the same upper (or lower 1j [i)] The adjacent sheet ■ on one side is sewn and both sheets) I
, I are joined. (Refer to Figure 2 (see Figure 2) Also, place the reinforcing pieces one above the other and sew them. (Refer to Figure 2 (c)) are sewn, and the ears of the sheet H are sewn to the - side of the lower (or upper) surface of the piece, and both sheets (1) are joined. (See Figure 2 (B)) C0 In addition, there are embodiments shown in Figure 2 (3) and (G) that use reinforcing pieces.

In any of the above-mentioned methods, the edges of the coarse sheet are fixed to the resin part of the reinforcing piece by sewing so as to be recessed, and the first-seam strength is increased, and an excellent nine-jointed type II can be achieved.

The knitted fabric, non-woven fabric, etc. used as the base fabric of the reinforcing piece is preferably a resin-coated fabric that is impregnated with resin and has no misalignment.For example, it is a polyester fabric, has the following composition, and has the following composition.
! t245b 540 after coating with fat? Favorable results were obtained using a processed fabric of /FF/ which was cut into tapes with the required width, for example, at intervals of 4 crLl.

51 x 42 (attached to 2) Also, after sewing according to the Queen's instructions, it is prohibited to cover the seamed part with another reinforcing piece or base fabric, etc. to prevent thread breakage at the case part. It's not a thing. In order to cut the reinforcing piece to the required width, it is preferable to cut it by hot melting and welding the edges to prevent threads from coming off.In this case, hot meltable synthetic fiber cloth can also be used, but It goes without saying that the present invention is not applicable to conventional sheets which have not been subjected to heat melting treatment and easily break through, but the present invention will be further described in detail below based on embodiments with reference to the drawings.

FIG. 1 is an explanatory view showing a coarse sheet according to the present invention, among which (4), (B) and (Q) show different modes of knitting and weaving in the interlining. The fibrous yarns 1 and 2 are knitted and woven, and are arranged in the weft and weft directions as warp yarns and weft yarns, respectively, and the thermoplastic resin 3 is evenly adhered to these yarns, especially at the intersections 4. In this case, the weft and warp threads are sufficiently brought into contact with each other to form an integral valley thread, as shown in Fig. 1).

Hereinafter, the joining of such coarse sheets will be explained with reference to the drawings.

In FIG. 2 CAL), no reinforcing pieces are used, and all the ends of sheet (CAL) 1 and the adjacent ends of sheet (2) are sewn together (11).

Even in this case, since the coarse sheet according to the present invention has warp and warp threads fixed at their respective intersections, the threads will not slip out from the ears, and the stitching shown in the figure will provide sufficient strength. This has the effect of providing a bond having the following properties.

Next, in the case of Figure 2 (B), (C), and (B),
In both cases, the suturing 11 is performed through reinforcing pieces.

1) In the company of (B), the ears of sheet I are sewn 11 to one side of the upper surface of the reinforcing piece 10, and the ears of the adjacent sheet ■ are sewn to the other side of the same upper surface. According to this example, sewing is performed simultaneously or consecutively with the edges of both sheets aligned, making the work easy. Moreover, its strength is very good. Also, Figure 2 (
The strength of C5 is even greater when there are reinforcing pieces on both sides.

Next, in the example shown in FIG. 11 and then both sheets are sewn together via reinforcing pieces. in this case,
Although there is not much difference in the tensile strength Fi(B) in the horizontal direction at the joint, considerable strength is ensured even when a twisting force is applied to the seam.

However, the most preferred embodiment is the one shown in FIGS.

In this case, the suturing work is relatively easy and a strong product can be obtained. In Figure 2 (l e (n a) (G), if the ends of Sheet I, Sheet ■, or the reinforcing piece are always wrapped around the suture thread, the ends of any of the three will protrude irregularly and slightly. There is no problem.

In addition, it is an effect unique to the present invention that the edges of sheets I and sheet ■ in FIGS. However, in order to make it more effective, the ends may be reduced (part of the sutured part), and the ends may be folded double or more (the entire sutured part) and sutured. Particularly favorable effects can be obtained when the reinforcing pieces in Figure 2), (F), and (G) are interposed with a conventionally known waterproof canvas-like cloth made of a woven fabric impregnated with resin. (A) to ( 0 In either case, although not shown, it does not preclude applying a cover piece to the sewn portion for further reinforcement and protection of the sewn portion.

Since the present invention is based on the above structure, the coarse sheet is sufficiently integrally joined to one interlining material at the intersection of the warp and warp threads of the interlining material, and in particular, the edges of the coarse sheet There is no possibility that each thread will come loose at the end or the selvedge, and when stitched together, the stitching with the adjacent sheet will be completed, and the intended purpose of the present invention can be fully achieved. In particular, when suturing is carried out through reinforcing pieces, the suture strength is further increased, and it can withstand strong twisting forces acting on the sutured portion, making it extremely useful for various wide and vertical structures. can be provided.

Therefore, for use in civil engineering and construction such as curing sheets, for sports facilities such as bulge covers, tennis and light-shielding sheets, etc.
The scope of use has expanded to include tents with eaves, painting, etc., and it is extremely effective.

[Brief explanation of the drawing]

Figures 1 (4), (B) and (Q are knitting and weaving examples of coarse sheets according to the present invention, Figure 1 (1) ri partially enlarged plan view, Figure 2 (
(Q is an explanatory diagram showing the mode of suturing. 1... Red thread, 2... 4 threads, 3... Thermoplastic resin, 10... Reinforcement piece, I, It... ...Coarse sheet. Patent applicant: Hiraoka Orisen Co., Ltd. Agent, Patent attorney: Masa Kai Kai B) Figure 1 (D) Figure 2 (E) Figure 2 (F) Figure 2 (G) 1g sum j/year A month -? 1st place

Claims (3)

[Claims] (1) A relatively coarse knitted fabric made by arranging fibrous threads in the weft and weft directions and knitting them is used as an interlining, and each thread in the weft and warp directions of the interlining is integrally joined at the point of difference between the two sides. A coarse sheet formed by adhering a thermoplastic resin to the entire interlining, wherein the ends of the coarse sheet and the ends of an adjacent coarse sheet of the same type are sewn together with or without reinforcing pieces. 1. A seam in a coarse sheet, characterized in that it is formed in a structure of wide and vertically connected coarse sheets. (2) The stitched portion in the coarse sheet according to claim 1, wherein the reinforcing piece is a reinforcing piece made of film-like resin. (3) The stitched portion in the coarse sheet according to claim 1, wherein the reinforcing piece is a reinforcing piece in which a thermoplastic resin is adhered to both or one side of a base fabric made of a knitted fabric or a nonwoven fabric.