Patent ID: 8469075

Claim:
A coating film peeling apparatus for resin material comprising: a peeling cylinder having a feed side on one end and a release side on another end; a peeling roll having multiple projections on its outer periphery and disposed to form a space for a peeling process along an inner wall of the peeling cylinder; a resistance lid disposed to block a discharge port on the release side of the peeling cylinder; and a pressure adjustment part that is capable of increasing and decreasing the push force of the resistance lid and thereby adjusts an outflow rate and internal pressure of the peeling cylinder; wherein the peeling cylinder is constituted by a polygonal-shaped angular columnar body having coating film pass-through holes punched in the angular columnar body, wherein these holes are comprised of: rows K of holes where perforated holes punched at a specified pitch are arranged in straight lines in the lengthwise direction of the peeling cylinder; and rows L of holes and projection rings where perforated holes are punched at a wider pitch than are the holes on rows K, and where circular projection rings are provided between the holes on rows L wherein each ring is made up of a head hole and a convex embossment formed around the head hole, and both of these holes and projection rings are arranged in straight lines in the lengthwise direction of the stripping cylinder, wherein rows K of holes and rows L of holes and projection rings are each provided alternately in multiple rows on a side facing the stripping roll.