发明授权
US06685103B2 Straw tube, and apparatus and method for producing the same 失效
秸秆管及其制造方法及其制造方法

Straw tube, and apparatus and method for producing the same
摘要:
An object of the present invention is to provide a straw tube capable of preventing reduction of pressure inside a drinking container when sucked, an apparatus, and a method for producing the straw tube and for using the apparatus. A straw tube has a tube body having a plurality of grooves extending in the longitudinal direction and a convex streak sandwiched by these grooves and projecting outward from the datum level of the outer circumferential wall. An apparatus has a rotating drum having tube loading grooves, a female rod having grooves and capable of reciprocating within the tube loading grooves by a cam mechanism, and a male roller having convex streaks corresponding to the grooves of the female rod so that the grooves of the female rod engage with the convex streaks through the tube and the female rod and the male roller are synchronized.
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