US Patent No: 4,293,608

Number of patents in Portfolio can not be more than 2000

Olefin packaging laminate

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Abstract

A heat sealable packaging material comprising (A) a stretched base layer formed of a propylene polymer and (B) a stretched surface layer formed of a blend of a propylene-ethylene copolymer and a C.sub.4 -C.sub.10 .alpha.-olefin-propylene copolymer in a weight proportion of 20:80 to 94:6 by weight on at least one surface of said base layer.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
TOYO BOSEKI KABUSHIKI KAISHAOSAKA, JP810

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Isaka, Tsutomu Osaka, JP 32 675
Kumada, Saburoh Kawanishi, JP 1 32

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Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
HOECHST AKTIENGESELLSCHAFT (8)
4,502,263 Sealable polyolefinic multilayer film 42 1983
4,595,625 Sealable multilayer film for packaging purposes 19 1984
4,720,420 Sealable, transparent polyolefinic multilayer film 44 1985
4,652,489 Sealable, opaque polyolefinic multilayer film and process therefor 60 1985
4,786,533 Transparent polypropylene film for candy twist wrapping 46 1986
4,734,318 Multilayer packaging film having superior scratch resistance 7 1986
5,302,427 Printable, biaxially oriented polyolefin multilayer film 16 1991
5,436,041 Transparent polyolefin multilayer film having a low sealing temperature on one side, process for its production and its use 13 1993
 
APPLIED EXTRUSION TECHNOLOGIES, INC. (5)
5,425,996 Biaxially oriented polypropylene metallized white film 15 1994
5,489,473 Biaxially and monoaxially oriented polypropylene cold seal release film 20 1994
5,482,780 Polypropylene film with cold seal release and cold seal receptive surfaces 55 1994
5,798,174 Biaxially and monoaxially oriented polypropylene cold seal release film 12 1996
5,792,549 Biaxially oriented polypropylene cold seal release films 39 1996
 
MOBIL OIL CORPORATION (3)
4,961,992 Laminated packaging film 29 1989
5,057,177 Laminated packaging film 20 1990
6,329,048 Multi-layer barrier film 1 1994
 
WOLFF WALSRODE AG (3)
4,400,428 Sealable multilayer films 28 1982
4,692,386 Sealable multilayer polyolefin films 28 1986
4,666,772 Opaque, heat sealable multilayer polyolefin films 38 1986
 
CHISSO CORPORATION (2)
5,068,155 Opaque, laminated and stretched products, and method for making them 4 1990
5,180,626 Opaque and pearlescent, laminated and stretched products, and method for making them 4 1990
 
BAXTER INTERNATIONAL INC. (1)
6,528,173 Coextruded multilayer films for sterilizable fluid containers 1 1998
 
BBA NONWOVENS SIMPSONVILLE, INC. (1)
6,849,324 Undirectionally cold stretched nonwoven webs of multipolymer fibers for stretch fabrics and disposable absorbent articles containing them 7 2001
 
BP CHEMICALS LIMITED (1)
4,680,330 Stretchable cling film composition based on polyethylene 19 1985
 
HOECHST TRESPAPHAN GMBH (1)
5,246,659 Method of producing polyproplene films 7 1991
 
JAPAN POLYCHEM CORPORATION (1)
6,624,253 Propylene type resin composition, film made thereof, and laminated resin film 6 2001
 
KIMBERLY-CLARK WORLDWIDE, INC. (1)
7,326,751 Method of thermally processing elastomeric compositions and elastomeric compositions with improved processability 1 2003
 
SUMITOMO CHEMICAL COMPANY, LIMITED (1)
4,584,239 Stretched multilayer polypropylene film 1 1985
 
TAGHLEEF INDUSTRIES INC. (1)
5,443,915 Biaxially oriented polypropylene metallized white film for cold seal applications 35 1994
 
THE DOW CHEMICAL COMPANY (1)
RE37248 Coextruded plastic film label for in-mold labeling 6 1994
 
THE PROCTER & GAMBLE COMPANY (1)
5,520,875 Process for producing a surfactant treated, formed, polymeric web 25 1995
 
ZESTRON GMBH & CO. KG (1)
5,626,813 Process for the production of a transparent polyolefin multilayer film 1 1995