Method and apparatus for making packing tape

Details Method and apparatus for making packing tape Method and apparatus for making packing tape

B - Operations, Transporting

29

C

B29C 47/08 (2006.01)

Patent

CA 2638589

A method of making a packing tape of polyethylene terephthalate (PET) in which pre-dried PET waste material is extruded with a single-screw extruder. During extrusion a negative pressure is applied to the extruder interior of the single-screw extruder so that low-molecular-weight impurities are removed from the PET waste material. The molten plastic is output in a strip--shape from a spinneret that is downstream of the single-screw extruder.

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