Title:
【発明の名称】押出し製品とその製造方法
Document Type and Number:
Japanese Patent JP2599760
Kind Code:
B2
Abstract:
An extruded article is provided comprising a base element (42, 80, 90, 100), and at least one rib element (41, 81, 91, 101) attached to the base element along its entire length. The rib element is narrower at its attachment end than at its free end, and is undulated. The article is formed by extruding an extrudable plastic mass having a conformable state and a nonconformable state. The extrusion rate of the free end of the rib element (41, 51, 91, 101) is sufficiently faster than that of the base element (42, 80, 90, 100). The free end of the rib element will therefore undulate as the structure is extruded. The free end of the rib element is permitted to undulate without distortion of the base element while the plastic mass is in the conformable state. The plastic mass is then converted to the nonconformable state while maintaining the undulation in the free end of the rib element.
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Inventors:
Dennis Glen Welligan
Ronald Otsuto Zemke
Walter William Pourikowski, Junior
Ronald Otsuto Zemke
Walter William Pourikowski, Junior
Application Number:
JP13661788A
Publication Date:
April 16, 1997
Filing Date:
June 02, 1988
Export Citation:
Assignee:
Minnesota Mining and Manyufu Acting Your Company
International Classes:
B29C48/08; B29C48/12; B29C48/30; D01D5/253; B29L28/00; (IPC1-7): B29C47/00
Attorney, Agent or Firm:
Akira Asamura (3 outside)