Stock material or miscellaneous articles – Composite – Of addition polymer from unsaturated monomers
Patent
1997-03-17
2000-01-11
Thibodeau, Paul
Stock material or miscellaneous articles
Composite
Of addition polymer from unsaturated monomers
428515, B32B 2732
Patent
active
060133783
ABSTRACT:
A polymeric multilayer film is disclosed that has improved gloss, dart drop and total energy dart drop while having structural qualities that are not significantly compromised. The film is composed of first film layer of a low polydispersity polyethylene copolymer and a second film layer of a high molecular weight high density polyethylene (HMW HDPE) polymer. The first film layer polymer has a polydispersity of from about 1 to about 4. In a preferred embodiment, this low polydispersity polymer is formed in the presence of a metallocene catalyst. The HMW HDPE polymer has a melt index of less than 0.1 and a density of at least about 0.940 g/cm.sup.3. Any of the layers of the film may be constructed of polymer blends with additional layers being contemplated.
REFERENCES:
patent: 3645992 (1972-02-01), Elston
patent: 3748962 (1973-07-01), Hilkert et al.
patent: 3986611 (1976-10-01), Dreher
patent: 4011382 (1977-03-01), Levine et al.
patent: 4050221 (1977-09-01), Lancaster, III et al.
patent: 4076698 (1978-02-01), Anderson et al.
patent: 4163831 (1979-08-01), Gessell
patent: 4205021 (1980-05-01), Morita et al.
patent: 4302565 (1981-11-01), Goeke et al.
patent: 4302566 (1981-11-01), Karol et al.
patent: 4359561 (1982-11-01), Fraser et al.
patent: 4399173 (1983-08-01), Anthony et al.
patent: 4399180 (1983-08-01), Briggs et al.
patent: 4418114 (1983-11-01), Briggs et al.
patent: 4461873 (1984-07-01), Bailey et al.
patent: 4511609 (1985-04-01), Craver et al.
patent: 4522987 (1985-06-01), Hogan et al.
patent: 4565720 (1986-01-01), Yaeo et al.
patent: 4574104 (1986-03-01), Aishima et al.
patent: 4588650 (1986-05-01), Mientus et al.
patent: 4808561 (1989-02-01), Welborn, Jr.
patent: 4833017 (1989-05-01), Benoit
patent: 4837075 (1989-06-01), Dudley
patent: 4871523 (1989-10-01), Datta et al.
patent: 4871705 (1989-10-01), Hoel
patent: 4925821 (1990-05-01), Chang
patent: 4925825 (1990-05-01), Tachi et al.
patent: 4937301 (1990-06-01), Chang
patent: 5001205 (1991-03-01), Hoel
patent: 5006500 (1991-04-01), Chang
patent: 5017655 (1991-05-01), Kase et al.
patent: 5019315 (1991-05-01), Wilson
patent: 5026798 (1991-06-01), Canich
patent: 5032652 (1991-07-01), Chang
patent: 5049423 (1991-09-01), German, Jr.
patent: 5079205 (1992-01-01), Canich
patent: 5084534 (1992-01-01), Welborn, Jr. et al.
patent: 5085927 (1992-02-01), Dohrer
patent: 5124418 (1992-06-01), Welborn, Jr.
patent: 5173343 (1992-12-01), Arvedson et al.
patent: 5183867 (1993-02-01), Welborn, Jr.
patent: 5206075 (1993-04-01), Hodgson, Jr.
patent: 5248547 (1993-09-01), Wilson
patent: 5272016 (1993-12-01), Ralph
patent: 5273809 (1993-12-01), Simmons
patent: 5278272 (1994-01-01), Lai et al.
patent: 5279872 (1994-01-01), Ralph
patent: 5283128 (1994-02-01), Wilhoit
patent: 5296580 (1994-03-01), Matsunaga et al.
patent: 5334428 (1994-08-01), Dobreski et al.
patent: 5358792 (1994-10-01), Mehta et al.
patent: 5374459 (1994-12-01), Mumpower et al.
patent: 5376439 (1994-12-01), Hodgson et al.
patent: 5380810 (1995-01-01), Lai et al.
patent: 5382631 (1995-01-01), Stehling et al.
patent: 5395471 (1995-03-01), Obijeski et al.
patent: 5397613 (1995-03-01), Georgelos
patent: 5397640 (1995-03-01), Georgelos et al.
patent: 5399426 (1995-03-01), Koch et al.
patent: 5407732 (1995-04-01), Dokurno
patent: 5419795 (1995-05-01), Wood et al.
patent: 5419934 (1995-05-01), Wilson
patent: 5420220 (1995-05-01), Cheruvu et al.
patent: 5431284 (1995-07-01), Wilson
patent: 5451450 (1995-09-01), Erderly et al.
patent: 5451468 (1995-09-01), Seiler et al.
patent: 5460861 (1995-10-01), Vicik et al.
patent: 5462807 (1995-10-01), Halle et al.
patent: 5482770 (1996-01-01), Bekele
patent: 5482771 (1996-01-01), Shah
patent: 5491019 (1996-02-01), Kuo
patent: 5523136 (1996-06-01), Fischer et al.
patent: 5530065 (1996-06-01), Farley et al.
patent: 5543223 (1996-08-01), Shah
patent: 5558930 (1996-09-01), DiPoto
patent: 5576038 (1996-11-01), Moore et al.
patent: 5595050 (1997-01-01), Koch et al.
patent: 5617707 (1997-04-01), Simmons
Leaversuch, R., "LDPE, mPE vie in Flexible Film Market", Modern Plastics, Sep. 1994, pp. 23 & 25.
Product Literature, To Give Your Customers' Used Stretch Film A New Lease On Life, Turn The Page, Mobil, 4 pgs.
Chowdhury, et al., "Polymers by Blueprint: Metallocene catalysts, the biggest thing to hit plastics since LLDPE, transform workhorse resins into engineering plastics," Chemical Engineering (Apr. 1993), pp. 34-39.
Schut, "Competition for Metallocenes Could Turn Ugly," Plastics World (Jan. 1995), pp. 33-36.
Product Literature, Dow Chemical Company, "Dow Resins for Stretch Film Applications--An Overview", p. 1.5, Oct. 1994.
Product Literature, Dow Chemical Company, "Dow Skin Resins for Cast Stretch Film Applications", pp. 3.1-3.4, Oct., 1994.
Product Literature, Dow Chemical Company, "ENGAGE Polyolefin Elastomer for Industrial Collation Packaging", KC 8852, May, 1994.
"Advantages of Metallocene Ethylene Polymer Resin Blends in Blown and Cast Films", Research Disclosure, Aug. 1995, pp. 565-573.
"Advantages of Metallocene Ethylene Polymer Resin Blends in Cast Film", Research Disclosure, Aug. 1995, pp. 556-557.
"Advantages of Metallocene Ethylene Polymer Resin in Blown and Cast Stretch Films", Research Disclosure, Aug. 1995, pp. 539-545.
Pendleton Ned R.
White Thomas A.
Tarazano D. Lawrence
Tenneco Packaging
Thibodeau Paul
LandOfFree
HMW HDPE film with improved impact strength does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with HMW HDPE film with improved impact strength, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and HMW HDPE film with improved impact strength will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1460607