20130251840 | Pre-Stretcher Assembly and Thermoforming Device - The present invention relates to a pre-stretcher assembly and a thermoforming device. The invention makes use of conical screw thread in combination with a stop so as to obtain a coupling system which can be coupled more quickly, results in a constant coupling and is less susceptible to wear. This makes the invention particularly advantageous for assemblable mould parts having a product-forming function, such as a pre-tensioner. | 09-26-2013 |