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A method of making a machine-attached inflatable ball

A production method and technology of inflatable balls, which are applied to inflatable hollow balls, balls, sports accessories, etc., can solve the problems of holes in the glue layer, sags in the ball skin, and inability to break through the skinning efficiency, so as to improve the yield rate, Avoid the effect of air bubbles

Active Publication Date: 2022-04-19
XIAMEN PULSA SPORTING GOODS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the current inflatable balls are glued to the inner bladder manually. Considering that it is not easy to develop skilled workers, labor costs are rising year by year, and the skinning efficiency cannot be broken through.
Therefore, it is a trend in production to use machine skinning and hot pressing to set the shape. In the process of existing inflatable ball production, the ball skin cannot be completely covered with glue when the ball skin is bonded, and it is easy to leave air bubbles, resulting in a glue layer. There are holes in the interior, the ball skin is sunken and other problems

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0030] like figure 1 As shown, this embodiment provides a method for making a machine-attached inflatable ball, which includes the following steps:

[0031] (1) A layer of yarn 12 is wound on the surface of the inflatable inner container 11, and then covered with a rubber skin 13. After vulcanization, the ball tire 1 is obtained, and then a layer of hot melt adhesive layer 3 is applied on the surface of the ball tire 1, and dried at room temperature ;.

[0032] (2) Cut the ball skin 2, and thin the peripheral edge of the ball skin 2 to obtain the thinned portion 21, then brush a layer of hot melt adhesive layer 3 on the back side of the ball skin, dry at room temperature, the outer surface of the ball tire 1 and The total thickness of the hot melt adhesive layer 3 on the back of the ball skin 2 is 0.7 mm, and the width of the thinned portion 21 is 2 mm. The material of the ball skin 2 is PU, and the thickness of the main body of the ball skin 2 is 4mm.

[0033] The hot melt...

Embodiment 2

[0038] like figure 2 As shown, the steps of this embodiment are consistent with the steps of Embodiment 1, the difference is that the outer surface of the inflatable inner bag 11 is wrapped with a layer of cloth 14 to form a ball tire 1, and the outer surface of the ball tire 1 and the ball skin 2 The total thickness of the hot melt adhesive layer 3 between the backs is 0.3 mm, and the edge of the ball cover 1 is not thinned. The material of the ball cover 1 is PVC.

[0039] The hot melt adhesive layer 3 includes the following components in parts by weight: 20 parts of polyurethane elastomer, 10 parts of tackifying resin, 4 parts of filler and 0.2 part of antioxidant.

[0040] When the skin-mounted mold is closed, keep it at 0.4Mpa, and the temperature line inside the skin-mounted mold is raised to 40°C and kept for 3 minutes. When hot-pressing the setting mold, first inflate the air pressure in the ball tire 1 to 0.4Mpa, then raise the temperature in the heat-setting mold ...

Embodiment 3

[0042] like image 3 As shown, the steps of this embodiment are consistent with the steps of Embodiment 1, the difference is that a layer of yarn 12 is wound on the outer surface of the inflatable inner bag 11 to form a ball tire 1, and the outer surface of the ball tire 1 and the ball skin 2 The total thickness of the hot melt adhesive layer 3 between the backs is 0.3 mm, and the width of the thinned portion 21 is 6 mm. The material of the ball cover 2 is TPE.

[0043] The hot melt adhesive layer 3 includes the following components in parts by weight: 30 parts of polyurethane elastomer, 15 parts of tackifying resin, 10 parts of filler and 0.5 part of antioxidant. When the skin-mounted mold is closed, keep it at 1.0Mpa, and the temperature line inside the skin-mounted mold is raised to 60°C and kept for 1min. When hot-pressing and setting, first inflate the air pressure in the ball tire 1 to 1.0Mpa, then raise the temperature inside the heat-setting mold to 95°C, keep it for...

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Abstract

The invention relates to the field of making balls, and discloses a method for making a machine-attached inflatable ball, comprising the following steps: (1) preparing a ball tire, and coating a layer of hot melt adhesive on the outer surface of the ball tire; (2) ) Place the ball skin flatly in the skin laminating mold of the skin laminating machine, and the adjacent ball skins are offset. Under the action of vacuum adsorption, the front of the ball skin is close to the inner wall of the mold; The air nozzle of the ball tire is aligned with the air nozzle in the skinning mold, put it into the skinning mold, the skinning mold is closed, and the temperature in the skinning mold is raised to melt the hot melt adhesive, and the ball skin and the ball tire are bonded together , and then lower the temperature to obtain the initial ball body; put the ball initial body into a heat-setting mold, and the temperature in the heat-setting mold rises to melt the hot melt adhesive, and the ball skin and the ball tire are completely bonded, and then the finished ball is obtained by cooling and cooling. Hot-melt adhesive is used, and in the steps of skin-fitting and hot-pressing shaping, the hot-melt adhesive can completely fill the gap in the ball and avoid the problem of ball skin depression.

Description

technical field [0001] The invention relates to the field of making balls, in particular to a method for making machine-attached inflatable balls. Background technique [0002] Traditional inflatable balls are made of inner tank, inner tank, ball skin, inflation nozzle and so on. The inner bladder is the ball bladder, which is the heart of the ball. It is the innermost layer of the ball and is made of black rubber; the inner bladder is located outside the yarn layer, which is the adhesive layer of the skin and is made of black rubber; the ball skin is divided into synthetic leather. (microstrength fiber, PU, ​​PVC, etc.) and genuine leather; the spout is used to inflate the ball. However, most of the current inflatable balls are glued to the inner bladder manually. Considering that it is not easy to develop skilled workers, labor costs are rising year by year, and the efficiency of skin application cannot be broken through. Therefore, it is a trend in production to use mac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A63B45/00A63B41/10A63B41/08A63B41/02
CPCA63B45/00A63B41/10A63B41/08A63B41/02
Inventor 赖永腾
Owner XIAMEN PULSA SPORTING GOODS CO LTD
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