Package making – Apparatus for contraction of cover by stretching or shrinking
Patent
1988-02-03
1990-08-21
Sipos, John
Package making
Apparatus for contraction of cover by stretching or shrinking
53588, B65B 1102
Patent
active
049495330
ABSTRACT:
A machine for band wrapping articles characterized in that it comprises a rotatable support for a supply of wrapping material which preferably is a hydrophobic film of resiliently stretchable plastics material, an adjustable support for the article to be wrapped, the adjustable support comprising two or more support members movable relative to each other, means enabling the wrapping material to be wrapped round both the support members and the article and the means enabling the material during its travel from the supply to the article (i) to be maintained under tension and (ii) to be reciprocated at right angles to the direction of travel of the material during the wrapping operation the support members being adapted to be removed from between the wrapping material and the article. Preferred members are smooth flat plates or blades the surface of which has been treated with an anti-friction agent, for example, polytetrafluoroethylene.
REFERENCES:
patent: 3863425 (1975-02-01), Edwards
patent: 4109445 (1978-08-01), Shulman
patent: 4248031 (1981-02-01), Del Pozo
patent: 4283903 (1981-08-01), Mayhall
patent: 4429514 (1984-02-01), Lancaster
patent: 4620408 (1986-11-01), Parnes
patent: 4658570 (1987-04-01), Thomas
patent: 4712354 (1987-12-01), Lancaster
Elmwood Packing Machinery Limited
Sipos John
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