Device for laying and preforming a section of web and moulding u

Details Device for laying and preforming a section of web and moulding u Device for laying and preforming a section of web and moulding u

1983-06-07

1986-05-27

Hoag, Willard E.

Plastic article or earthenware shaping or treating: apparatus

Preform severing means

Serially arranged with preform reshaping means

425306, 4253241, 425383, 425503, 425522, 425537, A01J 2102

Patent

active

045913277

ABSTRACT:
The invention relates to a device for laying and preforming a section of web in a forming mould which is provided at a container thermoforming station. The shaping member is mounted to move between, on the one hand, a lower position corresponding either to the position of closing (obturation) of the bottom opening in the forming chamber when the moulding unit occupies its thermoforming position, or to the median zone of the forming chamber when said unit occupies the stripping position and, on the other hand, an upper position corresponding to the median zone of said forming chamber when the moulding unit occupies the thermoforming position. An annular slot for passage is defined between the lateral face of the shaping member and certain corresponding parts of the lateral face of the forming chamber in the median zone thereof. The transfer piston is adapted to penetrate in the forming chamber.

REFERENCES:
patent: 3709643 (1973-01-01), Nasica
patent: 3904345 (1973-09-01), Lechevallier
patent: 4038854 (1977-08-01), Jones
patent: 4059377 (1977-11-01), Corbic
patent: 4130386 (1978-12-01), Hautemont
patent: 4134717 (1979-01-01), Philippon et al.
patent: 4370118 (1983-01-01), Dronet
patent: 4452580 (1984-06-01), Dronet

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