Windowed folding cartons

Details Windowed folding cartons Windowed folding cartons

1991-10-16

1992-11-03

Elkins, Gary E.

Envelopes, wrappers, and paperboard boxes

Paperboard box

Window or transparent portion

206 4531, B65D 542

Patent

active

051600838

ABSTRACT:
A windowed paperboard carton having a window aperture extending across two or three major wall panels, which aperture is closed by a clear plastic sheet. The plastic is adhered to the carton in selected areas but not in zones of articulation where the window goes around the corner of the carton. Special elongated slots are disposed along the lines of articulation of the plastic sheet and paperboard in non-adhesive areas to eliminate deleterious stress concentrations in the composite paperboard-plastic sheet blank.

REFERENCES:
patent: 3178086 (1965-04-01), Palmer
patent: 4664648 (1987-05-01), Dupuy
patent: 4733916 (1988-03-01), Seufert
patent: 4964563 (1990-10-01), Chaygneaud-Dupuy

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