Invention Grant
US07879274B2 Method of making a two-piece end plug for insertion into an end of a paper roll 有权
制造用于插入纸卷端部的两件式端塞的方法

Method of making a two-piece end plug for insertion into an end of a paper roll
Abstract:
An end plug (1) for insertion into an end of a paper roll includes an inner (2) and an outer piece (3), the pieces being rotatably attached to each other and prevented from axial movement in relation to each other by at least one protrusion (6) of one of the pieces running in an annular groove (7) in the other of the pieces. A method of manufacturing such an end plug is also disclosed.
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