Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Making hole or aperture in article
Reexamination Certificate
2006-11-30
2009-11-24
Del Sole, Joseph S. (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Making hole or aperture in article
C264S080000, C264S156000
Reexamination Certificate
active
07622064
ABSTRACT:
The present invention provides an apparatus and methods for flame-perforating polymeric films with an oxygen-enriched flame. One embodiment of the apparatus includes a frame, a support surface attached to the frame, where the support surface includes a plurality of lowered portions, an oxygen-enrichment system for increasing the amount of oxygen in the combustible mixture, a burner attached to the frame opposite the support surface, where the burner supports a stable flame, and a film contacting the support surface, where the flame of the burner is directed towards the film to cause the film to be perforated. One embodiment of the method of flame perforating a polymeric film includes igniting an oxygen-enriched combustible mixture to form a stable flame, wherein the flame generated by the oxygen-enriched combustible mixture provides more uniform perforations.
REFERENCES:
patent: 3012918 (1961-12-01), Schaar
patent: 3145242 (1964-08-01), Bryan
patent: 3153683 (1964-10-01), Bryan et al.
patent: 3153684 (1964-10-01), Bryan et al.
patent: 3255034 (1966-06-01), Covington et al.
patent: 3347697 (1967-10-01), Gmitro
patent: 3361607 (1968-01-01), Bruno
patent: 3375126 (1968-03-01), Nagel
patent: 3394211 (1968-07-01), MacDuff
patent: 3431135 (1969-03-01), Lough et al.
patent: 3783062 (1974-01-01), Martin
patent: 4272473 (1981-06-01), Riemersma et al.
patent: 4458608 (1984-07-01), DeBrucq
patent: 4622237 (1986-11-01), Lori
patent: 5753754 (1998-05-01), Strobel et al.
patent: 5891967 (1999-04-01), Strobel et al.
patent: 6635334 (2003-10-01), Jackson et al.
patent: 6780519 (2004-08-01), Strobel et al.
patent: 7037100 (2006-05-01), Strobel et al.
patent: 525 154 (1982-10-01), None
patent: 0 000 387 (1979-01-01), None
patent: 783664 (1957-09-01), None
patent: 851053 (1960-10-01), None
patent: 854473 (1960-11-01), None
patent: 1 010 649 (1965-11-01), None
patent: 1012963 (1965-12-01), None
patent: 1031040 (1966-05-01), None
patent: 1073605 (1967-06-01), None
patent: 1 085 949 (1967-10-01), None
patent: 1085949 (1967-10-01), None
patent: 04-007337 (1992-01-01), None
patent: 04-059344 (1992-02-01), None
patent: WO 99/16608 (1999-04-01), None
Strobel et al.,Flame Surface Modification of Polypropylene Film, Journal of Adhesion Science Technology, vol. 10, No. 6, pp. 515-539 (1996).
Getschel Joel A.
Strobel Mark A.
Ulsh Michael J.
3M Innovative Properties Company
Del Sole Joseph S.
Rios Lorraine
Wood Kenneth B.
LandOfFree
Methods and apparatus for oxygen enriched flame-perforation... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods and apparatus for oxygen enriched flame-perforation..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for oxygen enriched flame-perforation... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4111521