JPH0145389B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an improvement in the manufacturing method of baseball gloves, gloves, etc., and particularly relates to improvements in the manufacturing method of baseball gloves, gloves, etc., particularly in the ball-catching leather portion of the ball-catching surface. This prevents the ball from falling off, and also prevents the ball from being worn out due to impact.

<Prior art> In conventional baseball catching tools such as baseball bats, gloves, first bats, etc., the ball catching surface leather is used to catch the ball at the palm of the hand, its periphery, or the waist. When catching a ball, there was a risk that the ball would slip when it came into contact with the surface of the catching surface leather, causing it to fumble or fall.
A method of forming a large number of depressions or protrusions on the entire surface of the palm of the ball-catching surface leather, or on the entire surface of the palm and part of the fingers, etc., using heat embossing, etc., to prevent the ball from slipping when caught. something was proposed.

Similarly, a ball catching tool for baseball according to the conventional manufacturing method has a plurality of through holes arranged in a radial, petal-like, or impeller-like manner mainly in the ball-catching part of the outer leather part of the ball-catching surface leather. Insert each convex part of the rubber-like thin plate interposed between the outer leather part and the inner leather part of the ball-catching surface leather, and glue the circumferential side of each of the convex parts and the cut surface of each through hole in the outer leather part. A baseball catching device manufactured by combining the two was proposed.

Furthermore, instead of the above-mentioned baseball catching tool, a plurality of arbitrary shapes arranged in a radial, petal-like, impeller-like, etc. mainly on the ball catching part of the ball catching surface leather of the baseball catching tool can be used. A liquid polyurethane compound with excellent slip resistance, flexibility, and abrasion resistance, or a liquid rubber-like elastic material having the same effect as the liquid polyurethane compound is injected and filled into each of these holes. Since a part of the liquid rubber-like elastic material etc. permeates and fills the cut surface and inner surface of each through hole in the leather (both of which have a rough surface without a silver surface), no adhesive is used. A baseball device characterized in that when a liquid rubber-like elastic material is reaction-molded, the cut surfaces and inner surfaces of each through hole of each rubber-like elastic body part and the outer leather part are integrally molded in close contact with each other. A method of manufacturing a ball catching tool was proposed.

<Means for Solving the Problem> However, the ball catching tool manufactured by the manufacturing method of the first conventional product described above has a ball catching surface that has a ball catching surface that has a ball catching surface that has a leather surface that has a surface area on the entire surface of the palm, or from the entire surface of the palm to each finger. The anti-slip protrusions or recesses that are formed over a portion of the handle may restore their original shape during use or gradually disappear due to wear, etc., and not only do they lose their anti-slip effect, but also The ball-catching part of the outer leather part of the spherical leather is heated and stamped, so when it is heated to high temperatures, it loses (hardens) the unique flexibility that natural leather has, and at the same time shrinks and deforms, deteriorates, and cracks. This not only makes it difficult to wrap the ball in a ball-catching manner with the desired flexibility as a ball-catching tool, but also shortens its useful life.

In addition, in the ball catching device according to the above-mentioned conventional manufacturing method, since the outer leather part of the ball catching surface leather is flexible and thin, each punched through hole is easily deformed. A gap is created between each of the rubber-like protrusions, and the adhesion area between the cut surface of each of the through holes and the circumferential surface of each rubber-like protrusion is extremely small, and it is impossible to apply pressure to the adhesion surface. Therefore, not only is the adhesion extremely incomplete, but contamination with the adhesive is unavoidable, and the flexibility of each convex portion of the leather and the rubber thin plate is different. In other words, since the degree of bending between the two is different, these joints are likely to separate, and sand, etc., can enter the parts where these joints have peeled off, damaging the outer leather of the ball-catching surface and significantly shortening its service life. There were some defects that caused the problem.

Furthermore, the ball catching tool according to the above-mentioned conventional last resort manufacturing method for a baseball ball catching tool has a ball catching tool that has already been installed in a relatively small through hole provided in the ball catching surface leather or a relatively large through hole provided in the ball catching surface leather. The volume of a molded product injected with a liquid polyurethane compound, etc., injected into the cut surface and gap of a through hole into which a molded filling member is fitted, as the solvent in the liquid polyurethane compound evaporates after filling. Shrinkage occurs and reduces the degree of close bonding between the ball-catching surface leather and the molded material, such as the cut surface such as through-holes, which causes the bonded parts to separate while catching a baseball. There were some defects.

<Means for Solving the Problems> In order to overcome the defects of the ball catching tool according to the above-mentioned conventional manufacturing method, the manufacturing method of the baseball catching tool of the present invention improves the base of the ball catching surface leather of the ball catching tool. A gripping attachment, such as a ball, made of small protrusions of polyurethane molding with a high coefficient of friction and high anti-slip properties can be attached in a simple manner to the side of the ball-catching surface on the surface side or a part or most of the side and the finger side. The objective is to combine these functions to maintain the performance of preventing balls from falling and preventing balls from falling off for a long time.

<Example> The method for manufacturing a baseball catching tool of the present invention begins with the first step.
As shown in the figure, a coating 2 of synthetic resin such as polyurethane resin is coated on the outer surface of base 1 such as woven fabric, non-woven fabric, polyurethane foam, floor leather, etc.
A ball-catching leather part is formed by cutting the ball-catching leather part into a ball-catching leather shape, and as shown in FIGS. 1 and 2, the outer surface of the coating 2 of the ball-catching leather part is coated with MEK. After treating the surface with a solvent such as the above, or applying a thin layer of adhesive such as a polyurethane adhesive, this is dried, and the coating 2 of the ball-catching surface leather part subjected to such surface treatment is coated with an arbitrary thickness. , and a relatively small through hole 3 of an arbitrary shape is formed in a part or most of the side A corresponding to the ball catching part, the side A corresponding to the ball catching part, and the side B corresponding to the finger part of the ball catching surface leather part. Non-adhesive sheet C consisting of a large number of regular or irregular perforations such as radial or horizontal stripes
A liquid polyurethane compound B having a large coefficient of friction and high anti-slip properties is injected and filled into each of the through holes 3, 3 of the sheet C from the upper surface side of the sheet C, and the liquid polyurethane compound B that is injected and filled is The polyurethane blend B' is cured and molded. After that, when the sheet C is removed, the ball-catching surface leather part is separated from the ball-catching part side A or the ball-catching part side A on the coating 2, as shown in FIGS. 3 to 4. A ball-catching surface leather A having ball-gripping attachments B, B with a large number of small protrusions made of polyurethane resin or the like having a high coefficient of friction and high anti-slip properties is molded on a part or a large part of the side of the finger. Can be done. Next, the ball-catching surface leather A, its lining leather, and a core material are clamped therebetween, and the upper leather D, upper E, etc. are knitted together with a leather string F, and other conventional means are added, as shown in FIGS. 5 and 5. It is possible to manufacture baseball catching equipment such as this.

<Effects of the Invention> The ball-catching surface leather A, which is the main part of the baseball supplementary ball tool according to the manufacturing method of the present invention, mainly has the ball-catching part side A or the ball-catching part side I on the outer surface of the coating 2. and gripping attachments B, B which have a small protrusion-like shape made of polyurethane resin or the like and are capable of gripping the ball on parts or most of the finger sides A and B;
Since a large number of the balls are formed, there is no risk of the ball slipping and falling, and there is also no risk of the coating 2 being directly abraded by the impact of the ball or being abraded by sand or the like adhering to the ball. Further, after surface-treating the outer surface of the coating 2 of the ball-catching surface leather A (especially after applying a polyurethane adhesive or the like to the outer surface of the polyurethane resin coating 2), the liquid polyurethane compound B' is closely applied. If this is done, the tight bond between the ball-catching surface leather A coating 2 and each of the gripping attachments B, B is further strengthened, so that the action of each of the gripping attachments B, B can be maintained for a longer period of time.

<Another embodiment> In addition to the basic embodiment described above, as shown in FIGS. 1, 2, and 4, each through hole 2 provided at a predetermined portion is Using a sheet C in which the width of the side opening edge is larger than that of the opening edge on the upper surface side, a liquid polyurethane compound B' is injected and filled into each of the through holes 2, 2 of the sheet C, and then molded. A ball catching tool for baseball equipped with a supplementary ball surface leather A in close contact with gripping attachments B and B has an enlarged contact surface with the coating 2 of the ball catching surface leather part of each gripping attachment B, so that each gripping attachment Since the tight bond between the gripping attachments B and the coating 2 of the ball-catching surface leather parts can be further strengthened, there is no fear of each gripping attachment B falling off, and its service life can be maintained for a longer period of time.

The liquid polyurethane compound B' is the best polyurethane resin, which is prepared by melting and mixing appropriate amounts of a curing agent, catalyst, and dye into a liquid urethane prepolymer, or by dissolving and mixing them in as small a amount of these common solvents as possible. The gripping attachments B, B, such as balls, can be constructed from molded products.

[Brief explanation of drawings]

The drawing is a schematic diagram showing a method of manufacturing a baseball catching tool according to the present invention. FIG. 1 is a cross-sectional view of the main part of the ball-catching surface leather part. 2 to 2 are cross-sectional views showing the process sequence of filling and tightly adhering a liquid polyurethane compound onto the coating of the ball-catching surface leather component of FIG. 1. 3 to 3 show the ball-catching surface leather, which is also one of the main parts of the present invention, and are examples of surface views thereof, and are cross-sectional views thereof. FIG. 4 is an illustration of a partially enlarged sectional view thereof. FIG. 5 is a front view showing the complementary ball surface side of the baseball catching tool according to the manufacturing method of the present invention. <Drawing codes> A...Spherical leather, B...Gripping attachment, B'...Liquid polyurethane compound, C...Non-adhesive sheet, D...Upper leather, E
... Web part, F ... Leather strap, 1 ... Base, 2
...Coating, 3...Through hole, A...Side corresponding to the ball catching part,
B...The side corresponding to the finger part.

Claims (1)

[Claims] 1. Base fabric. Non-woven fabric. A ball-catching surface leather component is formed by cutting a ball-catching surface leather component made by attaching a coating of a synthetic resin such as polyurethane resin to the outer surface of a base such as polyurethane foam or floor leather, and forming a ball-catching surface leather component. After treating the upper surface with a solvent such as MEK or applying a thin layer of polyurethane adhesive, this is dried, and the coated ball-catching surface leather coated with such surface treatment is coated with an arbitrary thickness. A relatively small through hole of an arbitrary shape is formed in a regular or irregular pattern such as a radial or horizontal stripe pattern on the side corresponding to the ball catching part or a part or most of the side corresponding to the ball catching part and the side corresponding to the finger part. A non-adhesive sheet with perforations is cut out, and a liquid polyurethane compound with a high coefficient of friction and high anti-slip properties is injected and filled into each of the through holes of the sheet from the top side of the sheet. A method of manufacturing a ball catching tool for baseball, characterized in that a ball gripping attachment is formed on the ball catching side of the ball catching surface leather. 2. The liquid polyurethane compound is formed by mixing a liquid urethane prepolymer with an appropriate amount of a curing agent, a catalyst, a pigment, etc., by melting or by dissolving them in a small amount of a common solvent as possible. A method for manufacturing a baseball catching tool according to scope 1.