Abstract: In a method of and an apparatus for manufacturing a tubular thermoplastic resin film having a rough inner surface, the temperature of a mandrel located near a discharge port of a resin passage is set lower than the temperature of a die ring over a limited range in the circumferential direction of the discharge port. A cooling device is provided in the mandrel for cooling the portion of the mandrel located near the discharge port of the resin passage to a temperature lower than the temperature of the portion of the die ring located near the discharge port. The cooling device cools limited areas on the surface of the mandrel. These limited areas are spaced around the circumferential of the discharge port of the resin passage.

Abstract: A die for the attachment of a label to a flexible article, characterized by being provided with a label suction surface and the label suction surface having a regularly or irregularly jogging part formed in substantially the entire surface thereof and having suction holes disposed as enclosed with the protrusions of the jogging part. This die is capable of heating a label provided on one surface thereof with an adhesive surface formed by the application of a thermosensitive adhesive agent and attaching the heated label uniformly and tightly to the surface of the flexible article.