Title:
FOAMED MIDDLE TIRE, RUBBER-PASTED BALL, AND MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/022481
Kind Code:
A1
Abstract:
A foamed middle tire, a rubber-pasted ball, and a manufacturing method. The foamed middle tire comprises a liner (1), a liner deformation preventing layer (2), and a foam layer, wherein the liner deformation preventing layer (2) is coated on the outer surface of the liner (1), and the foam layer is provided on the outer surface of the liner deformation preventing layer (2) in a covering mode. According to the foamed middle tire, the foam layer is directly pasted to the liner deformation preventing layer (2), so that on the basis of the characteristic that the foam layer is light in weight, the weight of the liner (1) can be increased for a middle tire having the same weight, and the thickness of the liner (1) made from the same material can be increased, thereby improving the airtightness of the liner (1); the foamed middle tire can be applied to a volleyball having a relatively light weight, and can also satisfy the requirement for the liner (1) having a complex structure; in addition, the ball has better bounce and softness without the constraint of a middle rubber layer; moreover, the original flexibility of yarns or patches and foam can be maintained, and the sense of flapping touch is softer and more comfortable; the foamed rubber middle tire layer is replaced with the foam layer, a vulcanization technology and a polishing process during a manufacturing process can be avoided, and bad and uneven foaming during a vulcanization process can also be avoided.
Inventors:
CHEN HONGWEI (CN)
Application Number:
PCT/CN2019/099461
Publication Date:
February 11, 2021
Filing Date:
August 06, 2019
Export Citation:
Assignee:
CHEN HONGWEI (CN)
International Classes:
A63B41/00; A63B41/02
Foreign References:
CN2628100Y | 2004-07-28 | |||
CN109276860A | 2019-01-29 | |||
CN103285562A | 2013-09-11 | |||
CN205598558U | 2016-09-28 | |||
CN108721847A | 2018-11-02 | |||
US20160243409A1 | 2016-08-25 | |||
US20110015011A1 | 2011-01-20 |
Attorney, Agent or Firm:
CHANGSHA CHUWEI INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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