Synthetic replacement for pulpboard in waxbond innerseals

Details Synthetic replacement for pulpboard in waxbond innerseals Synthetic replacement for pulpboard in waxbond innerseals

1996-05-03

1999-02-16

Castellano, Stephen

Bottles and jars

Closures

Cap type

215348, 215349, B65D 5304, B65D 5306

Patent

active

058711120

ABSTRACT:
An innerseal is provided for sealing against the lip of a container opening under a cap. The innerseal includes a resiliently-compressible porous synthetic backing layer which fits within the cap, a foil layer, and a wax layer which initially holds the foil and backing layers together. Preferably, a heat-activatable adhesive layer is disposed against the foil layer. The cap is tightened so that the foil layer is pressed against the lip of the container opening. Then, heat is applied to melt the wax and to activate the adhesive layer. This molten wax is absorbed into the synthetic backing layer so that the backing layer and foil layer are separatable by a twisting of the cap. The synthetic backing layer provides improved strength and liquid resistance characteristics over pulpboard type seals, and is cuttable with less dust.

REFERENCES:
patent: 4684554 (1987-08-01), Ou-Yang
patent: 5176271 (1993-01-01), Painchaud et al.
patent: 5381914 (1995-01-01), Koyama et al.

Affiliated with

Also associated with

Rating

Synthetic replacement for pulpboard in waxbond innerseals does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Synthetic replacement for pulpboard in waxbond innerseals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Synthetic replacement for pulpboard in waxbond innerseals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2055981