Envelopes – wrappers – and paperboard boxes – Paperboard box – Box material includes a coating or a nonpaperboard...
Patent
1974-07-30
1976-10-12
Lusignan, Michael R.
Envelopes, wrappers, and paperboard boxes
Paperboard box
Box material includes a coating or a nonpaperboard...
229 48T, B65D 542, B65D 100, B65D 300, B65D 500
Patent
active
039852849
ABSTRACT:
A multi-layered packing material in the form of a web for use in constructing blanks to be erected into finished packaging containers comprises a relatively stiff base layer made of paper, cardboard or foamed plastic coated preferably on both sides with a layer of thermoplastic material, e.g. polyethylene. The laminated packing material may also include aluminum foil to establish a gas-proof barrier. At least one of the edges of the laminated packing material is provided with a narrow edge zone of a heat-activatable bonding agent of the same thickness as the web such as a mixture of solid hydrocarbons which is mechanically stable but elastic at normal temperature and has a relatively low melting temperature range. The edge zone consisting of the heat-activatable bonding agent is utilized in establishing a butt type joint between it and an adjacent panel or other planar part of the container when erected.
REFERENCES:
patent: 3305383 (1967-02-01), Gordy
patent: 3341349 (1967-09-01), Feeney et al.
patent: 3463656 (1969-08-01), Feeney et al.
AB Ziristor
Lusignan Michael R.
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