Dual-ovenable, heat-sealable packaging film

Details Dual-ovenable, heat-sealable packaging film Dual-ovenable, heat-sealable packaging film

2005-12-27

2005-12-27

Miggins, Michael C. (Department: 1772)

Stock material or miscellaneous articles

Composite

Of polyamide

C428S474400, C428S474700, C428S036700, C428S220000, C428S036600, C426S113000, C426S114000, C426S115000, C426S412000, C426S415000

Reexamination Certificate

active

06979494

ABSTRACT:
A dual ovenable film having a first layer comprising one or more polyamides and a second layer comprising one or more polyamides. The first layer forms the first outer surface of the film. The second layer has a melting point of at least about 210° C. The film is capable of forming a water-containing package by providing two 4 inch by 6 inch sheets of the film each having four perimeter sides, placing the sheets in superimposed, coextensive arrangement having the first layers of the films in contact with each other, and heat sealing three perimeter sides of the sheets together using a ⅛-inch wide sealing bar at a temperature of 290° F., a dwell time of 0.5 seconds, and a sealing pressure of 40 psig to form an open pouch having heat seals along three of the four perimeter sides. The open pouch can be filled with 100 milliliters of distilled water at a temperature of 73° F. and the fourth perimeter side of the sheet can be heat sealed together under the same conditions as used to seal the three perimeter sides to form a closed package having a heat seal along the fourth perimeter side and containing the water. The seal strength of the resulting heat seals is at least 1 pound/inch after the closed, water-containing package has been exposed to three hours in a conventional oven at 400° F. (air temperature). The film may be used to form heat sealed pouches at “polyolefin-type” of heat seal conditions, yet the integrity of the heat seals may be maintained even when the heat seal is exposed to conventional oven conditions.

REFERENCES:
patent: 3369911 (1968-02-01), Von Witzleben
patent: 3762986 (1973-10-01), Bhuta et al.
patent: 3995084 (1976-11-01), Berger et al.
patent: 4355721 (1982-10-01), Knott, II et al.
patent: 4400429 (1983-08-01), Barlow et al.
patent: 4421823 (1983-12-01), Theisen et al.
patent: 4448792 (1984-05-01), Schirmer
patent: 4495249 (1985-01-01), Ohya et al.
patent: 4537304 (1985-08-01), Kaim et al.
patent: 4542075 (1985-09-01), Schirmer
patent: 4568922 (1986-02-01), Schwippert et al.
patent: 4605460 (1986-08-01), Schirmer
patent: 4606922 (1986-08-01), Schiemer
patent: 4647483 (1987-03-01), Tse et al.
patent: 4665135 (1987-05-01), Tse et al.
patent: 4766018 (1988-08-01), Hinrichsen et al.
patent: 4803122 (1989-02-01), Schirmer
patent: 4855103 (1989-08-01), Ekbom
patent: 4855183 (1989-08-01), Oberle
patent: 4877684 (1989-10-01), Shepard et al.
patent: 4892765 (1990-01-01), Hisazumi et al.
patent: 4925685 (1990-05-01), Sahi
patent: 4935272 (1990-06-01), Leboeuf
patent: 4937112 (1990-06-01), Schirmer
patent: 4970113 (1990-11-01), Yamada
patent: 5016735 (1991-05-01), Hodge
patent: 5037683 (1991-08-01), Schirmer
patent: 5061532 (1991-10-01), Yamada
patent: 5089073 (1992-02-01), Schirmer
patent: 5185189 (1993-02-01), Stenger et al.
patent: 5206309 (1993-04-01), Altman
patent: 5281360 (1994-01-01), Hong et al.
patent: 5314987 (1994-05-01), Kim et al.
patent: 5374459 (1994-12-01), Mumpower et al.
patent: 5460878 (1995-10-01), Hostetter
patent: 5462756 (1995-10-01), Raines et al.
patent: 5480690 (1996-01-01), Stenger et al.
patent: 5534277 (1996-07-01), Ramesh et al.
patent: 5547765 (1996-08-01), Degrassi et al.
patent: 5709915 (1998-01-01), Tomic et al.
patent: 5866214 (1999-02-01), Ramesh
patent: 5866649 (1999-02-01), Hong et al.
patent: 5926989 (1999-07-01), Oliver, Sr.
patent: 6110600 (2000-08-01), Ramesh
patent: 6221410 (2001-04-01), Ramesh et al.
patent: 6239210 (2001-05-01), Kim et al.
patent: 6288161 (2001-09-01), Kim et al.
patent: 6346285 (2002-02-01), Ramesh
patent: 6416832 (2002-07-01), Uehara et al.
patent: 6436547 (2002-08-01), Toft et al.
patent: 6627324 (2003-09-01), Eggers et al.
patent: 2002/0001684 (2002-01-01), Kim et al.
patent: 2003/0134966 (2003-07-01), Kim et al.
patent: 199 35 324 (2001-02-01), None
patent: 0 229 527 (1987-07-01), None
patent: 0 366 382 (1988-10-01), None
patent: 0 315 419 (1989-05-01), None
patent: 0 338 488 (1989-10-01), None
patent: 0 231 663 (1990-10-01), None
patent: 0 795 482 (1997-09-01), None
patent: 0 960 903 (1999-12-01), None
patent: 1 172 202 (2002-01-01), None
patent: 92/15641 (1992-09-01), None
patent: 93/01108 (1993-01-01), None
patent: 97/04959 (1997-02-01), None
patent: 97/12758 (1997-04-01), None
patent: 97/28047 (1997-08-01), None
patent: 98/06574 (1998-02-01), None
patent: 99/33653 (1999-07-01), None
patent: 01/89830 (2001-11-01), None
patent: 02/072347 (2002-09-01), None

Affiliated with

Also associated with

Rating

Dual-ovenable, heat-sealable packaging film does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dual-ovenable, heat-sealable packaging film, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual-ovenable, heat-sealable packaging film will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3507801