Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1995-08-29
1998-06-16
Le, H. Thi
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
33732, 428217, 4284246, 428518, 473604, 473608, B32B 702, B32B 2708
Patent
active
057667071
ABSTRACT:
A plastic ball is disclosed, in particular a PVC air ball having a ball skin consisting of a skin base substance, in which a predetermined amount of stiffening material the hardness of which is greater than that of the skin base substance is added to the skin base substance.
REFERENCES:
patent: 4169594 (1979-10-01), Crane
patent: 4238537 (1980-12-01), Kerr
patent: 4239568 (1980-12-01), Takazawa
patent: 4258917 (1981-03-01), Murphy
patent: 5096756 (1992-03-01), Walters
patent: 5413331 (1995-05-01), Stillinger
patent: 5580049 (1996-12-01), Brantley
Budzyn Ludomir A.
Casella Anthony J.
Gebruder Obermaier oHG
Hespos Gerald E.
Le H. Thi
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