Extruded article and method of making same

Details Extruded article and method of making same Extruded article and method of making same

D - Textiles, Paper

01

D

18/791

D01D 5/253 (2006.01) B29C 47/00 (2006.01) B29C 47/12 (2006.01)

Patent

CA 1296855

41458 CAN 7A EXTRUDED ARTICLE AND METHOD OF MAKING SAME Abstract An extruded article is provided comprising a base element, and at least one rib element 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 nonconform- able state. The extrusion rate of the free end of the rib element is sufficiently faster than that of the base element. 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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