Container, method and apparatus for manufacturing the same

Details Container, method and apparatus for manufacturing the same Container, method and apparatus for manufacturing the same

1986-08-14

1990-05-22

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Including application of internal fluid pressure to hollow...

264533, 264295, 264292, 264296, 264323, 264521, 4253871, 425393, B29C 1703, B29C 1707

Patent

active

049275917

ABSTRACT:
A hollow body (e.g. a container) as well as a method and an apparatus for its manufacture in which an axially directed wall of the body primarily is made of oriented and/or crystallized plastics material. A tubular preform (10d) is fixed in a circumferential region (13d) in the vicinity of the mouth edge (14d) of the preform between mechanical forming devices (30,40), after which the devices, during continued clamping of the circumferential region, are displaced in the axial direction of the preform relative to a mandrel (50). Thus, the mandrel is displaced into the preform during simultaneous expansion thereof and the material is oriented and/or crystallized. In a preferred embodiment there is made a certain compensation of the stretching forces, which arise in the material when inserting the mandrel, by applying a force to the bottom of the preform by a bottom support (75).

REFERENCES:
patent: 3681486 (1972-08-01), Mehnert
patent: 3757718 (1973-09-01), Johnson
patent: 4512735 (1985-04-01), Nilsson et al.
patent: 4563325 (1986-01-01), Coffman
patent: 4565664 (1986-01-01), Ikehata et al.

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