Manufacturing container or tube from paper; or other manufacturi – Assembling or disassembling of distinct members – Comprising bringing two members together
Patent
1984-05-23
1986-04-15
Bray, W. D.
Manufacturing container or tube from paper; or other manufacturi
Assembling or disassembling of distinct members
Comprising bringing two members together
156197, 493 42, 493966, B31D 100
Patent
active
045825076
ABSTRACT:
An apparatus having rotary shearing and forming dies which expand a web of formable material by imparting to the web a surface configuration having rows of generally sinusoidal convolutions extending longitudinally along the web, each row lying 180.degree. out of phase from abutting rows. The meshing rotary dies include flat portions defining a neutral zone wherein no web deformation occurs, with the result that each convolution in a row is joined to the next longitudinally succeeding convolution by a flat web section lying in the original plane of the formable sheet material. The expanded web is laminated to a flat web of paper-like material and the resulting composite web is converted to expanded cigarette wrappers.
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Bray W. D.
Philip Morris Incorporated
Secrest Thomas L.
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