Title: Method of laminating a plastic sheet onto a surface of a hollow body

Abstract: A method of laminating a plastic sheet onto a surface of a hollow body is disclosed. The method of laminating a plastic sheet onto a surface of a hollow body includes the steps of loading the hollow body into the female die, securing the plastic sheet in a clamping means, heating the clamped sheet to its softening temperature, moving the clamped heated sheet into registry with a male die and the female die, sealing one die of the male die and the female die to one member of the clamping means and the clamped heated plastic sheet to define therewith a sealed chamber, moving the male die toward the clamped heated sheet to form the clamped heated sheet about the male die, moving the male die and the clamped formed heated sheet against the surface of the hollow body in the female die, and applying fluid pressure to the clamped formed heated hollow body to transfer the clamped formed heated sheet to the surface of the hollow body.

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Other info:

Inventors: Cruckshank, Ira G. (Kensington, CT, US)
Snodgrass, Thomas J. (Lake Forest, IL, US)

Application Number: 337254
Filing Date: 1973-03-01
Publication_date: 1976-01-20
Assignee: United States Steel Corporation (Pittsburgh, PA)
Primary Class(es): 156/250 156/285, 156/286, 156/287, 156/293, 156/382, 264/512, 264/544, 264/549, 264/550, 264/553, 425/387.1, 425/388
Other Classes:
US Patent Ref:

2973558	Mar, 1961	Stratton	264/92.
3220902	Nov, 1965	Edwards	156/382.
3342914	Sep, 1967	Edwards	264/94.
3379798	Apr, 1968	McNash	264/94.
3463059	Aug, 1969	Jonk	156/287.
3568254	Mar, 1971	Stolki	425/388.

Other Refs:
Primary Examiner: Weston, Caleb
Assistant Examiner:
Attorney: Urey; David S.