Cardboard blank for gas-tight and liquid-tight folding boxes

Details Cardboard blank for gas-tight and liquid-tight folding boxes Cardboard blank for gas-tight and liquid-tight folding boxes

1978-01-25

1979-10-16

Moorhead, Davis T.

Receptacles

Receptacle having flexible, removable inner liner

Means for venting air trapped between the liner and its...

220450, 220453, 229 35MF, B65D 556

Patent

active

041710649

ABSTRACT:
In a cardboard blank for a gas-tight and liquid-tight folding box, especially one printed externally, carrying on the cardboard surface which is to be the inside of the box a full-surface layer of heat-sealable plastic, the improvement which comprises an additional plastic layer positioned between the full-surface plastic layer and the cardboard, the additional layer being provided only over portions of the surface including the seam areas, the thickness of the full-surface plastic layer together with the local additional plastic layer being sufficient for tight, hot-sealed seams. The additional layer can be hot melt printed onto the cardboard, before application of the full-surface layer, at the same time the cardboard is printed and/or die cut. By providing the additional layer only in critical areas such as seams or fold lines, a thinner full-surface layer can be provided with an overall economy of plastic.

REFERENCES:
patent: 2682987 (1954-07-01), Spiess, Jr.
patent: 3236436 (1966-02-01), Cheely

Affiliated with

Also associated with

Rating

Cardboard blank for gas-tight and liquid-tight folding boxes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cardboard blank for gas-tight and liquid-tight folding boxes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cardboard blank for gas-tight and liquid-tight folding boxes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-802728