发明名称 Process and apparatus for the covering of playing balls
摘要 A process and apparatus for the covering of playing balls, in particular tennis balls, utilize two essentially dumbbell-shaped cover parts and apply the parts interlockingly at an angle of 90 DEG , successively to the adhesive coated ball core by rolling over the laid out, dumbbell-shaped cover parts. The cover parts are stacked to form a magazine and are provided with a layer of an adhesive so that only their peripheral surfaces are coated. The adhesive coated ball cores are rolled successively, initially by means of a contact pressure device in the longitudinal direction over a first cover part magazine and subsequently by means of a second contact pressure device and second cover part magazine extending transversely to the longitudinal direction of the first cover part magazine. The edge of the second cover part engages the bight of the cover part already in position at a decorative seam gap.
申请公布号 US4543143(A) 申请公布日期 1985.09.24
申请号 US19840666121 申请日期 1984.10.29
申请人 SIEBERTZ, DIETMAR 发明人 SIEBERTZ, DIETMAR;SIEBERTZ, STEPHAN
分类号 B29C63/00;B29D22/04;(IPC1-7):B29H7/02 主分类号 B29C63/00
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