Method and apparatus for producing synthetic resin tube
AssigneeSekisui Kagaku Kogyo Kabushiki Kaisha
InventorsMikio Kobayashi, Isamu Nakano
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Abstract
Method and apparatus for producing a synthetic resin tube by deforming a strip of synthetic resin and joining both lateral surfaces of the deformed strip together while transporting the strip in its longitudinal direction.
Claims7
A method for producing a synthetic resin tube comprising the steps of transporting a strip of synthetic resin in its longitudinal direction, deforming the strip into a tubular shape having an axis extending in the longitudinal direction of the strip and at the same time bringing both lateral surfaces of the strip into pressing contact with each other to join said surfaces while passing the strip through a restricted space during transport, characterized in that the diameter of the restricted sapce is adjustable in accordance with the variation of the transverse dimension of the strip in its longitudinal direction by utilizing the internal stress of the strip passing therethrough.
Dependencies are inferred from the claim text.