Padded envelope

Details Padded envelope Padded envelope

B - Operations, Transporting

65

D

B65D 27/00 (2006.01) B31B 39/00 (2006.01) B32B 7/04 (2006.01) B32B 27/10 (2006.01) B32B 27/32 (2006.01) B32B 27/36 (2006.01) B65D 65/40 (2006.01) B65D 81/03 (2006.01)

Patent

CA 2488172

The envelope comprises layers of plain un-coated kraft paper and of bubble- wrap polyethylene. A stack of the layers is joined at the marginal edges of the envelope by squeezing the stack between a pair of points-dies, which are formed with points that puncture the kraft paper but do not puncture the polyethylene. The points push crowns of un- punctured polyethylene through the punctured holes in the paper. Then, the marginal edges are squeezed flat between flat-dies, the flat-dies being heated enough to cause fuse-bonding. The margins of the finished envelope are held together not only by fuse- bonding, but by the presence of the crowns, which, penetrating right through the holes in the paper, serve as mechanical rivets.

L'invention concerne une enveloppe comprenant des couches de papier kraft non revêtu uni et du polyéthylène en film à bulles d'air. Un empilement des couches est joint au niveau des bords de marges de l'enveloppe par écrasement de l'empilement entre une paire de filières à points constituées de points qui perforent le papier kraft mais non le polyéthylène. Les points poussent des couronnes de polyéthylène non perforé à travers les trous perforés du papier. Puis, les bords des marges sont écrasés à plat entre les filières plates suffisamment chauffées pour provoquer une liaison par fusion. Les marges de l'enveloppe finie sont maintenues ensemble non seulement par le biais de la liaison par fusion mais également par la présence de couronnes qui, lorsqu'elles pénètrent exactement à travers les trous du papier, servent de rivets mécaniques.

Affiliated with

Also associated with

Rating

Padded envelope does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Padded envelope, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Padded envelope will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-2004598