Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1995-05-31
1997-01-21
Thurlow, Jeffery R.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
15624421, 264514, 264564, 264566, 26417128, 26417314, 426127, B29C 5528
Patent
active
055956238
ABSTRACT:
A method for making a film which is useful in the packaging of newly formed blocks of cheese and demonstrates flexibility, extensibility, and improved sealing strength comprises extruding an ethylene vinyl acetate/very low density polyethylene sealing layer. In addition to barrier properties, flexibility and extensibility are, preferably, also provided by coextruding a core layer of ethylene vinyl alcohol copolymer containing at least 32% by weight of ethylene with the sealing layer. A preferred method for making a film comprises coextruding a core layer of ethylene vinyl alcohol copolymer, two intermediate layers each comprising a polyamide, at least one of which having an ionomer blended therewith, outer layers of very low density polyethylene, ethylene vinyl acetate, and anti-blocking agent, and adhesive polymeric materials to adhere the outer blend layers to the respective intermediate polyamide layers, immediately expanding the extrudate to a dimension appropriate for achieving the desired thickness of the final film, and cooling the film.
REFERENCES:
patent: 4284674 (1981-08-01), Sheptak
patent: 4398635 (1983-08-01), Hirt
patent: 4407873 (1983-10-01), Christensen et al.
patent: 4457960 (1984-07-01), Newsome
patent: 4495249 (1985-01-01), Ohya et al.
patent: 4532189 (1985-07-01), Mueller
patent: 4671987 (1987-06-01), Knott, II
patent: 4683170 (1987-07-01), Tse et al.
patent: 4735855 (1988-04-01), Wofford et al.
patent: 4746562 (1988-05-01), Fant
patent: 4753700 (1988-06-01), Fant
patent: 4755402 (1988-07-01), Oberle
patent: 4755419 (1988-07-01), Shah
patent: 4801486 (1989-01-01), Quacquarella
patent: 4855183 (1989-08-01), Oberle
patent: 4863784 (1989-09-01), Lustig et al.
patent: 4909881 (1990-03-01), Garland
patent: 4956212 (1990-09-01), Bekele
patent: 4976898 (1990-12-01), Lustig et al.
patent: 5053259 (1991-10-01), Vicik
patent: 5094799 (1992-03-01), Takashige et al.
patent: 5234731 (1993-08-01), Ferguson
Lulham Cedric M.
Toney Gloria G.
Gregory Leigh P.
Quatt Mark B.
Thurlow Jeffery R.
W. R. Grace & Co.,-Conn.
Wasatonic John J.
LandOfFree
Method for making a barrier film with improved extensibility for does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for making a barrier film with improved extensibility for, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making a barrier film with improved extensibility for will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2321747