Polyethylene films

Details Polyethylene films Polyethylene films

2006-02-14

2006-02-14

Nutter, Nathan M. (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S232000, C525S240000

Reexamination Certificate

active

06998440

ABSTRACT:
Novel stretch and blown films are prepared based on copolymers of ethylene and alpha-olefins having (a) a density in the range 0.900 to 0.940 (b) an apparent Mw/Mn of 2–3.4 (c) I21/I2from 16 to 24 (d) activation energy of flow from 28 to 45 kJ/mol (e) a ratio Ea(HMW)/Ea(LMW)>1.1, and (f) a ratio g′(HMW)/g′(LMW) from 0.85 to 0.95. The films exhibit an excellent combination of strength and processability and are particularly suitable for use as either stretch films or blown films for use as heavy duty sacks. The preferred films show a dart impact of >1100 g and MD elongations of >500%.

REFERENCES:
patent: 4587303 (1986-05-01), Turtle
patent: 5525659 (1996-06-01), Falla et al.
patent: 6123827 (2000-09-01), Wong et al.
patent: 6486270 (2002-11-01), Garrison et al.
patent: 6613841 (2003-09-01), Williams
patent: 6642339 (2003-11-01), Chai et al.
patent: 0 168 928 (1986-01-01), None
patent: 0 610 942 (1994-08-01), None
patent: 0 755 971 (1997-01-01), None
patent: 95/04761 (1965-02-01), None
patent: 94/14855 (1994-07-01), None
patent: 95/30714 (1995-11-01), None
patent: 97/44371 (1997-11-01), None
patent: 00/68285 (2000-11-01), None

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3668524