JPS6110708Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a grip tape that is used by being wrapped around the grip of a tennis or badminton racket, a golf club, or the like.

Grips for rackets, golf clubs, etc. have traditionally been wrapped with natural leather tape to prevent slipping, but while natural leather tape absorbs sweat during use and improves the grip, it also causes color transfer to the hands and mold. It has drawbacks such as the occurrence of sweat and extreme shrinkage when drying, and it also has the disadvantage that if it absorbs too much sweat, it becomes slimy and becomes slippery.

The purpose of the present invention is to provide a grip tape that can eliminate the drawbacks of the conventional natural leather tape mentioned above and has the same suitability for wrapping as natural leather. The illustrated embodiment will be described in detail as follows.

In general, natural leather tape is suitable as a grip tape because when it is pulled strongly and wrapped around a grip, the stretching force causes the tape to curve in the width direction into an arc shape with a convex surface. This is because the rotation joints can form tightly aligned grip surfaces.

However, in the case of a woven tape with little warp elongation and weft elongation, when it is pulled strongly, a stronger force is applied to the outer edge in the weft direction, causing the tape to curve into an arc with a concave surface and achieve appropriate warp elongation. Unless a strong force is applied in the warp direction, an arcuate curvature of the convex surface cannot be obtained.In addition, in the case of extremely large warp elongation such as knit, or material such as tricot where the warp elongation is larger than the weft elongation, when a strong force is applied in the warp direction, the weft A tape made of a single layer such as a knitted fabric is unlikely to be suitable as a grip tape because it shrinks rapidly in the direction and wrinkles occur, making it unable to function as a grip tape. In this case, it is desirable to adjust the elongation balance between warp and warp between 1:1 and 1:2 based on experiments, and the balance of warp and warp elongation of natural leather tape naturally falls within this range (approximately 1:1.5). from,
It is thought that the double or multilayer structure of natural leather is a major reason why natural leather tape sufficiently exhibits the desired effects as a grip tape.

In other words, in the case of a tape with a layered structure, if the surface layer has a greater elongation than the base layer, and the overall elongation balance is within the above range, the most desirable arcuate curvature with a convex surface can be obtained. This can be experimentally proven.

However, the balance of elongation over the course of natural leather is as described above, but at the same time, when measuring the elongation rate of the parts with the whole leather as 100 for the elongation of the surface silver layer and the base layer, the elongation of the whole measurement is 11%, and the elongation of the silver layer is 11%. layer
16%, base layer (8% rope layer, 8% inner layer), which shows desirable performance as a grip tape.

Therefore, in this invention, we have punched a synthetic fiber web such as polyester or nylon to achieve a balance of warp and warp elongation of 1:1 to 1:2.
A nonwoven fabric with a three-dimensional structure adjusted to a range of A synthetic resin foam layer 2 such as polyurethane, polyvinyl chloride, etc. is laminated and the surface is polished to give a suede-like structure, which is then slit in the longitudinal direction to form a grip tape 3 as shown in FIG. 4 in Figure 2 indicates the taper of the sliced portions of both side edges of the tape 3.
The above-mentioned resin-impregnated nonwoven fabrics are made using a normal method (blower method, sliver method, etc.) and are needle-punched at 600 to 900 per ^cm2 to increase the density.
The ratio of resin and fiber should be around 0.14 to 0.2.
The foamed layer 2 was obtained by impregnating the resin with a ratio of about 40:60 to 60:40 (warp elongation of about 30% to 80%, warp elongation ratio of about 1:1 to 1:2). Coating is obtained by attaching a foamed film by dry or wet gelling, and the elongation of this layer is 10% or more greater than the longitudinal elongation of the base layer 1.

When this grip tape 3 is coated with adhesive on the base layer surface and wrapped tightly around the grip with the part A in Fig. 1 first, the tape will naturally form an arc shape with the surface convex. The tape is curved, and the tapered portions overlap each other, resulting in consistent winding (when the tape is curved in an arc shape with a concave surface, the winding joint edge portion thereof rolls up).

Example A web made of a mixture of 35% polyester and 65% nylon was punched to a density of 0.18, impregnated with NBR resin with a solid content of 20%, and the solid content was 48% fiber.
The impregnated nonwoven fabric obtained by dry gelling and drying, adjusted to 52% PU resin, was sliced into 1m/m thick slices, coated with urethane resin with a solid content of 10%, and then processed by wet gelling. A foam layer with a thickness of 300 to 400 microns is formed, and the surface is made suede-like by buffing, with a total thickness of 1.25 to 1.35 m/m.
of structures were created, and the growth rate was 59%.
The latitude was 72% (JIS method). Slice this structure into 2cm wide pieces, make a 1.2m tape with one end tapered, taper both sides of the back side at 2m/m to create a grip tape, and wrap it around the grip using a bond. After applying it several times, a finish that looked exactly like natural leather was obtained, and when it was actually used, there was no sliminess or discoloration that natural leather has, and even after a considerable period of use, there was no shrinkage, mold, or mildew. It was found that the purpose was satisfactorily achieved without generating any strange odor.

Since the present invention is constructed as described above, it is possible to take full advantage of the advantages of conventional grip tape made of natural leather, and since the foam layer touches the hand, it exhibits a sufficient anti-slip effect even if it gets wet with temporary cold sweat. Because it is a synthetic product, there is no risk of mold, shrinkage, or fading, completely eliminating the drawbacks of natural leather grip tapes.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of the present invention, and FIG. 2 is an enlarged sectional view taken along line II in FIG. 1...Base layer, 2...Foam layer, 3...Tape.

Claims (1)

[Scope of utility model registration request] Polyester, nylon, a mixed fiber of these fibers, or a web of fibers mainly composed of these fibers is made into a nonwoven fabric whose balance of elongation between warp and warp is adjusted in the range of 1:1 to 1:2 by punching, and then polyurethane, Using a base layer impregnated with NBR, SBR, or a mixture of these resins, a synthetic resin foam layer of polyurethane or polyvinyl chloride with a higher elongation rate than the base layer is layered on the surface, and the surface is polished. 200~400
A tape for grips on rackets, etc., which is made of micron-thick suede.