JP2003126303A - Method of reinforcing sewn segment of sewn ball - Google Patents

Abstract

PROBLEM TO BE SOLVED: To develop and provide a method of reinforcing leather covers of a sewn ball which improves the durability of the sewn ball by reinforcing the segments of the sewing threads of the sewn ball by simple means, thereby imparting the strength equivalent to that of the leather covers to these segments. SOLUTION: The sewn ball formed by swing together a plurality of leather cover pieces (1a and 1b) are superposed with two sheets of the leather cover pieces 1a and 1b, are respectively provided with tapes on both surfaces near the end faces Y of these superposed leather cover pieces 1a and 1b and are sewn on the portions near the superposed end faces by sewing threads 3 (3a), by which the sewn segment are reinforced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of reinforcing a sewn portion of a sewing ball.

[0002]

2. Description of the Related Art Conventionally, a ball for a ball game includes a pasted ball having a reinforcing layer provided with a skin, a rubber ball provided with a rubber layer on the reinforcing layer, and a skin piece divided into a plurality of pieces as shown in FIG. , There are sewn balls that are sewn in a spherical shape by sewing a large number of them.

When this sewing ball is used for competition, a strong force is applied to the thread and the outer skin of the sewn portion, and if the thread is weaker than the outer skin, the thread breaks and if the thread has strength,
The epidermis is torn.

Surfaces of these skin pieces are overlapped with each other, and their edges are sewn by hand or by a sewing machine. The hand-sewn seams or the seams of the sewing machine are folded back to form the skin of the ball. Therefore, it is required that the sewn part is close to the end of the skin piece, that is, the seam allowance is narrow, but if the seam allowance is too narrow, the strength is weak, and if the seam allowance is wide, There is a drawback in that the part is projected and transmitted to the surface of the skin piece, and the touch becomes poor.

[0005]

Therefore, the present invention is
Developed a method of reinforcing the skin of a sewing ball that tries to improve the durability of the sewing ball by reinforcing the sewing thread portion of the sewing ball with a simple means to give strength equivalent to that of the skin. It is provided.

[0006]

According to the present invention, in a sewing ball, in order to keep the strength of the skin piece and that of the sewing thread uniform, the strength of the sewing thread is improved by reinforcing the sewing thread side with a seam stitch or a bias tape. The strength of the sewn ball is maintained at the same level as that of the outer skin to increase the strength of the entire sewn ball.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIG. 1. In a sewing ball formed by stitching a plurality of skin pieces, two skin pieces (1a) (1b) are used.
And tapes (2) are respectively provided on both surfaces near the end faces (X) of the superposed skin pieces, and the vicinity of the overlapped end faces is sewn with a sewing thread (3). It is configured by a method of reinforcing a sewn portion of a sewing ball.

A second embodiment of the present invention will be described with reference to FIG. 2. In a sewing ball formed by stitching a plurality of skin pieces, two skin pieces (1a) (1b) are used.
Are superposed on each other, and the vicinity (X) of the superposed skin pieces is bonded or heated or / and pressure-bonded at a high frequency.
A method of reinforcing a sewn portion of a sewing ball, which is characterized in that sewing is performed with a sewing thread (3).

Further, a third embodiment of the present invention will be described with reference to FIG. 3. In a sewing ball formed by stitching a plurality of skin pieces, two skin pieces (1a) (1) are used.
b) are superposed, the adhesive film (4) is sandwiched between the end surfaces (X) of the superposed skin pieces, and the vicinity of the superposed end surfaces is heated or / and pressure-bonded, and the heated or / and pressure-bonded portion Is integrally sewn with the sewing thread (3).

A fourth embodiment of the present invention will now be described with reference to FIG. 4. In a sewing ball formed by stitching a plurality of skin pieces, two skin pieces (1a) (1) are used.
b) are superposed, and an adhesive film tape (4 ') is provided on the end faces (Y) of both superposed skin pieces, and the adhesive film tape (4') is adhered, or the thermal adhesive film tape (4) is attached. ″) Are provided, the heat-adhesive film tape (4 ″) is heat-bonded, and the vicinity of the overlapped end faces is sewn with a sewing thread (3), which is a method for reinforcing a sewn portion of a sewing ball. To be done.

A fifth embodiment of the present invention will be described with reference to FIG. 5. In a sewing ball formed by stitching a plurality of skin pieces, two skin pieces (1a) (1b) are used.
Are overlapped with each other, and the overlapped end faces (X) are sewn with a sewing thread (3), and the stitched end faces (X) are stitched with a sewing thread (3a). The method of reinforcing a sewn portion of a sewing ball is used.

Further, a sixth embodiment of the present invention will be described with reference to FIG. 6. In a sewing ball formed by stitching a plurality of skin pieces, two skin pieces (1a) (1) are used.
b) are overlapped with each other, and the vicinity (X) and the end surfaces (Y) of the overlapped end surfaces are covered with a bias tape (5), and the sewing tape (5) is integrally sewn with a sewing thread (3). And a method of reinforcing a sewn portion of a sewing ball.

The tape (2) used in the present invention
The material of the bias tape (5) is composed of natural / synthetic cloth, synthetic resin / rubber / adhesive film / heat-adhesive film (urethane-based / thermoplastic resin). Can be hand sewn or machine sewn.

[0014]

According to the present invention, in a sewing ball formed by stitching a plurality of skin pieces, two skin pieces are superposed, and tapes are provided on both surfaces near the end faces of the superposed skin pieces. By sewn the vicinity of these overlapped end faces with the sewing thread, the sewing thread is integrally sewn from both the skin pieces and the respective tapes, so that the strength is increased.

In a sewing ball formed by stitching a plurality of skin pieces, two skin pieces are superposed and the end surfaces of the superposed skin pieces are adhered, or
Since heating and / or pressure bonding is performed at a high frequency, both skin pieces are welded, the molecules on the surface of both skin pieces are tightened, and this portion is sewn with a sewing thread, which has the effect of increasing the strength.

Further, in a sewing ball formed by stitching a plurality of skin pieces, two skin pieces are overlapped,
An adhesive film is sandwiched and adhered near the end faces of the superposed skin pieces, or a heat-adhesive film is sandwiched, and the vicinity of the superposed end faces is heated or / and pressure-bonded, and the heated or / and pressure-bonded portion Is integrally sewn with a sewing thread, which has the effect of increasing the strength of the overlapping surfaces of the two skin pieces.

Then, in a sewing ball formed by stitching a plurality of skin pieces, two skin pieces are superposed,
Adhesive tapes or heat-adhesive film tapes are provided on the end surfaces of both of these superposed skin pieces, and the adhesive tapes are adhered or the heat-adhesive film tapes are heat-adhered, and the vicinity of these superposed end surfaces is sewn with a sewing thread. By wearing it, it has the effect of forming a structure that enhances the strength of the end faces of both skin pieces.

Further, in a sewing ball formed by stitching a plurality of skin pieces, two skin pieces are superposed, and tapes are provided on both surfaces of the superposed skin pieces, and the vicinity of the superposed end surfaces is provided. By stitching with a sewing thread and stitching this sewn portion, it is possible to strengthen the vicinity of the end surface of the skin piece.

Further, in a sewing ball formed by stitching a plurality of skin pieces, two skin pieces are overlapped,
Moreover, by covering the overlapped end faces and the end faces with bias tape and sewing the sewing tape integrally from above the bias tape, both skin pieces and the bias tape can be sewn integrally, so that they can be firmly fixed. .

By using a material selected from natural and synthetic cloth, synthetic resin, rubber, adhesive tape, and heat-adhesive film for the tape and bias tape,
Even if the synthetic leather is thin and cannot be used as a ball at the present time, it can be used, and has an extremely beneficial effect.

[Brief description of drawings]

FIG. 1 is a partially cutaway enlarged sectional view showing an embodiment of the present invention.

FIG. 2 is a partially cutaway enlarged cross-sectional view showing another embodiment of the present invention.

FIG. 3 is a partially cutaway enlarged sectional view showing another embodiment of the present invention.

FIG. 4 is a partially cutaway enlarged sectional view showing another embodiment of the present invention.

FIG. 5 is a partially cutaway front view showing another embodiment of the present invention.

FIG. 6 is a partially cutaway front view showing another embodiment of the present invention.

FIG. 7 is a partially cutaway sectional view showing a usage state of the present invention.

[Explanation of symbols]

1a Skin piece 1b Skin piece 2 tapes 3 sewing threads 3a sewing thread 4 adhesive film 4'adhesive film tape 4 "thermal adhesive film tape 5 bias tape Near the X end face Y end face

Claims (7)

[Claims] 1. A sewing ball formed by stitching a plurality of skin pieces together, wherein two skin pieces are superposed, and
A method for reinforcing a sewn portion of a sewing ball, characterized in that tapes are provided on both sides of the superposed skin pieces in the vicinity of the end faces, and the superposed end faces are sewn with a sewing thread. 2. In a sewing ball formed by stitching a plurality of skin pieces, two skin pieces are superposed, and the vicinity of the end faces of the superposed skin pieces are heated and crimped, and the heated and crimped portion is used as a sewing thread. A method for reinforcing a sewn portion of a sewing ball, which comprises sewn together. 3. In a sewing ball formed by stitching a plurality of skin pieces together, two skin pieces are superposed, an adhesive film is sandwiched between the end surfaces of the superposed skin pieces, and the vicinity of the superposed end surface is A method for reinforcing a sewn portion in a sewing ball, which comprises heating or / and crimping, and integrally sewing the heated or / and crimped portion with a sewing thread. 4. In a sewing ball formed by stitching a plurality of skin pieces, two skin pieces are superposed, an adhesive film tape is provided on the end faces of both superposed skin pieces, and the adhesive film tape is adhered. At the same time, a method for reinforcing a sewn portion of a sewing ball is characterized in that the overlapped end surfaces and the vicinity thereof are sewn together with a sewing thread. 5. A sewing ball formed by stitching a plurality of skin pieces together, wherein two skin pieces are superposed, and
Tapes are provided on both sides of these superposed skin pieces, and the vicinity of these superposed end faces is sewn with a sewing thread,
Also, a method for reinforcing a sewn portion of a sewing ball, characterized in that the sewn portion is stitched. 6. A sewing ball formed by stitching a plurality of skin pieces together, wherein two skin pieces are overlapped with each other, and
A method for reinforcing a sewn portion in a sewing ball, characterized in that the vicinity of both end surfaces and the end surface which are overlapped with each other are covered with a bias tape, and the sewing tape is integrally sewn with a sewing thread. 7. The material of the tape and bias tape is
7. A method for reinforcing a sewn portion in a sewing ball according to claim 1 or 6, wherein the cloth is selected from natural / synthetic cloth, synthetic resin / rubber / adhesive film / heat-adhesive film. .