Patent ID: 6425848
Filing Date: 2002-07-30
Classification: B29C,B65B

Abstract:
Apparatus for cutting or sealing plastics material, comprising:a low thermal inertia die having a base portion for engagement by a bolster, a blade-like portion, and a central ridge disposed on a working face of the blade-like portion and which in use opposes plastics material to be cut or sealed, the blade-like portion spacing the working face from the base portion; a strip-shaped electrical resistance heating element embedded in the low thermal inertia die and configured to heat the low thermal inertia die, the strip-shaped electrical resistance heating element having first and second elongate edges; and a sensor configured to sense temperatures at the working face of the low thermal inertia die; wherein the blade-like portion of the low thermal inertia die includes a groove adjacent and extending an entire length of the working face, the strip-shaped electrical resistance heating element being embedded in the groove adjacent the working face with the first elongate edge closer thereto than the second elongate edge.