Patents by Inventor Solomon Bekele
Solomon Bekele has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6133352Abstract: An extrudable vinylidene chloride composition is useful in packaging films where controlled CO.sub.2 and O.sub.2 transmission rates benefit the packaging of products such as gassing cheese. The composition, and film made therefrom, comprises 100 parts by weight of at least one vinylidene chloride copolymer; between 4 and 15 parts by weight of a plasticizer; and between 4 and 15 parts by weight of an acrylate/styrene copolymer; wherein the total amount of plasticizer and acrylate/styrene copolymer comprises at least 9 parts by weight.Type: GrantFiled: November 21, 1997Date of Patent: October 17, 2000Assignee: Cryovac, Inc.Inventor: Solomon Bekele
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Patent number: 6045924Abstract: A film includes a layer derived from PVDC-containing composition having properties such as good thermal stability, enhanced extrudability, improved oxygen barrier properties, and reduced stickiness to metal surfaces. The composition includes a three components: a vinylidene chloride-containing polymer, a processing aid polymer, and a material useful for preventing the degradation of PVDC.Type: GrantFiled: February 12, 1997Date of Patent: April 4, 2000Assignee: Cryovac, Inc.Inventor: Solomon Bekele
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Patent number: 5925454Abstract: A combination of lamellar and spherical particulates provides a film with desired slip and antiblock characteristics, in the absence of loose dust on the surface of the film. The film exhibits improved machinability over comparative films having either lamellar or spherical particulates. The invention is also directed to a composition of matter comprising a polymer having the mixture of lamellar and spherical particulates.Type: GrantFiled: July 11, 1995Date of Patent: July 20, 1999Assignee: W.R. Grace & Co.-Conn.Inventor: Solomon Bekele
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Patent number: 5914194Abstract: A vinylidene chloride film with improved processing properties such as good thermal stability, enhanced extrudability and reduced stickiness to metal surfaces is made from a vinylidene chloride polymer or copolymer and up to about 2.0% by weight of a soap of a fatty acid as a processing aid.Type: GrantFiled: December 6, 1996Date of Patent: June 22, 1999Assignee: Cryovac, Inc.Inventor: Solomon Bekele
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Patent number: 5759702Abstract: A film with properties such as good thermal stability, enhanced extrudability, improved oxygen barrier properties, and reduced stickiness to metal surfaces is made by the use of a vinylidene chloride composition with small amounts of a plasticizer, such as epoxidized oil or epoxidized alpha olefin, and with an acrylate or styrene polymer, such as methyl methacrylate/butyl acrylate/styrene polymer, butyl acrylate/butyl methacrylate/methyl methacrylate polymer, or poly (alpha-methylstyrene).Type: GrantFiled: January 14, 1997Date of Patent: June 2, 1998Assignee: W. R. Grace & Co.-Conn.Inventor: Solomon Bekele
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Patent number: 5726229Abstract: An extrudable vinylidene chloride composition is useful in packaging films where controlled CO.sub.2 and O.sub.2 transmission rates benefit the packaging of products such as gassing cheese. The composition, and film made therefrom, comprises 100 parts by weight of at least one vinylidene chloride copolymer; between 4 and 15 parts by weight of a plasticizer; and between 4 and 15 parts by weight of an acrylate/styrene copolymer; wherein the total amount of plasticizer and acrylate/styrene copolymer comprises at least 9 parts by weight.Type: GrantFiled: April 7, 1995Date of Patent: March 10, 1998Assignee: W. R. Grace & Co.-Conn.Inventor: Solomon Bekele
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Patent number: 5679465Abstract: An extrudable vinylidene chloride composition is useful in packaging films where good thermal stability during processing, and oxygen barrier properties in the finished film are desirable. The composition, and film made therefrom, comprises 100 parts by weight of an extrudable vinylidene chloride copolymer; at least 0.1 parts by weight of an acid acceptor such as tetrasodium pyrophosphate; and between 1 and 10 parts by weight of a dienophile such as ethylene/butyl acrylate/maleic anhydride terpolymer. A polymeric lubricating agent can optionally be included in the composition and film. A film comprising a sealant layer; first and second intermediate layers comprising a material selected from polyamide, polyester, and ethylene vinyl alcohol copolymer; a barrier layer comprising vinylidene chloride copolymer; and an abuse layer is also disclosed.Type: GrantFiled: October 3, 1995Date of Patent: October 21, 1997Assignee: W. R. Grace & Co.-Conn.Inventor: Solomon Bekele
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Patent number: 5645788Abstract: An oriented multilayer film comprises a barrier layer of polymerized ethylene vinyl alcohol, and an orientation-compatible polymeric layer having a modulus of at least about 4.times.10.sup.4 psi. The a barrier layer occupies from about 2 to 15 volume percent of the oriented multilayer film, and has a thickness of from about 0.01 to 0.75 mils. The polymerized ethylene vinyl alcohol has an ethylene content of from about 38 to 48 weight percent. The orientation compatible layer has a thickness of from about 0.49 to 4.5 mils. The multilayer film is oriented at a temperature of from about 165.degree. F. to 212.degree. F., has an orientation ratio greater than 9, an oxygen permeability at 0% relative humidity of from about 1 and 6 cm.sup.3 -mil/day-m.sup.2 -atm, and a total thickness of from about 0.5 to 5 mils.Type: GrantFiled: June 6, 1995Date of Patent: July 8, 1997Assignee: W.R. Grace & Co.-Conn.Inventor: Solomon Bekele
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Patent number: 5538770Abstract: An extrudable vinylidene chloride composition is useful in packaging films where controlled CO.sub.2 and O.sub.2 transmission rates benefit the packaging of products such as gassing cheese. The compositon, and film made therefrom, comprises 100 parts by weight of at least one vinylidene chloride copolymer; between 4 and 15 parts by weight of a plasticizer; and between 4 and 15 parts by weight of an acrylate/styrene copolymer; wherein the total amount of plasticizer and acrylate/styrene copolymer comprises at least 9 parts by weight.Type: GrantFiled: November 18, 1994Date of Patent: July 23, 1996Assignee: W. R. Grace & Co. -Conn.Inventor: Solomon Bekele
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Patent number: 5491009Abstract: A multi-layer film useful in vacuum skin packaging and other packaging applications, and having a combination of good implosion resistance, formability and high oxygen barrier characteristics, includes a core layer having an oxygen barrier material such as ethylene vinyl alcohol copolymer (EVOH) and a layer or layers comprising an amorphous nylon with or without a low flexural modulus polymeric material such as low modulus nylon (polyamide or copolyamide). Layers of ethylene vinyl acetate copolymer (EVA) or other olefin homopolymers or copolymers, polymeric adhesive layers, a heat-sealable layer, and a heat resistant layer are also disclosed. A composition of matter comprising a blend of an amorphous nylon and a low modulus polymeric material, especially a low modulus nylon, is also disclosed.Type: GrantFiled: August 3, 1990Date of Patent: February 13, 1996Assignee: W. R. Grace & Co.-Conn.Inventor: Solomon Bekele
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Patent number: 5482770Abstract: An oriented multilayer film comprises a barrier layer of polymerized ethylene vinyl alcohol, and an orientation-compatible polymeric layer having a modulus of at least about 4.times.10.sup.4 psi. The a barrier layer occupies from about 2 to 15 volume percent of the oriented multilayer film, and has a thickness of from about 0.01 to 0.75 mils. The polymerized ethylene vinyl alcohol has an ethylene content of from about 38 to 48 weight percent. The orientation compatible layer has a thickness of from about 0.49 to 4.5 mils. The multilayer film is oriented at a temperature of from about 165.degree. F. to 212.degree. F., has an orientation ratio greater than 9, an oxygen permeability at 0% relative humidity of from about 1 and 6 cm.sup.3 -mil/day-m.sup.2 -atm, and a total thickness of from about 0.5 to 5 mils.Type: GrantFiled: March 22, 1994Date of Patent: January 9, 1996Assignee: W. R. Grace & Co.-Conn.Inventor: Solomon Bekele
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Patent number: 5346735Abstract: A vacuum skin package for packaging fresh red meat and like articles is produced by using a composite, multilayer, oxygen barrier, vacuum skin packaging forming film in which the impermeable film can be manually separated from the non-barrier, oxygen permeable film. After the vacuum skin package is formed to enclose a fresh red meat product in a vacuum the meat will have a purplish color. Then, after storage, the impermeable film can be removed so that the remaining permeable film can admit oxygen to impart the desirable red bloom to the fresh meat. The oxygen permeable film preferably includes a core having enhanced permeation properties. The impermeable film preferably includes an EVOH layer sandwiched between ionomer layers for improved barrier properties.Type: GrantFiled: August 14, 1992Date of Patent: September 13, 1994Assignee: W. R. Grace & Co.-ConnInventors: Robin H. Logan, Solomon Bekele, Henry W. Stockley, III, Gloria G. Toney
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Patent number: 5332616Abstract: A multilayer film suitable for packaging produce comprises a core layer comprising a blend of ethylene butyl acrylate copolymer and very low density polyethylene; and two outer layers comprising a blend of ethylene alpha olefin copolymer having a density of at least about 0.916 grams per cubic centimeter, and ethylene vinyl acetate copolymer.Type: GrantFiled: October 28, 1992Date of Patent: July 26, 1994Assignee: W. R. Grace & Co. - Conn.Inventors: Ray E. Patrick, Solomon Bekele
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Patent number: 5202188Abstract: A film with properties such as good thermal stability, enhanced extrudability, improved oxygen barrier properties, and reduced stickiness to metal surfaces is made by the use of a vinylidene chloride composition with small amounts of a plasticizer (such as epoxidized oil or epoxidized alpha olefin), and acrylate/styrene polymer (such as methyl methacrylate/butyl acrylate/styrene polymer) or poly(alpha-methylstyrene).Type: GrantFiled: August 23, 1991Date of Patent: April 13, 1993Assignee: W. R. Grace & Co.-Conn.Inventor: Solomon Bekele
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Patent number: 5183706Abstract: A forming web suitable for lining the interior of a rigid or simirigid container, such as a box made from corrugated board, includes an outer sealable layer; an interior barrier layer comprising a polymeric material with low oxygen transmission; a polymeric layer which adds bulk to the web; and an inner adherent layer. The web can also include polymeric adhesive layers for bonding the outer sealable layer to the interior layer, and the bulk layer to the interior and inner adherent layers respectively. More than one bulk or barrier can be included in the present invention.Type: GrantFiled: August 3, 1990Date of Patent: February 2, 1993Assignee: W. R. Grace & Co.-Conn.Inventor: Solomon Bekele
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Patent number: 5087462Abstract: Discoloration of meat products due to oxygen starvation in stacked packages is significantly reduced by applying a textured surface to the bottom of the packages. A discrete textured film may be adhered to a tray or supporting member, or the tray or supporting member may itself be textured at its bottom surface.Type: GrantFiled: October 12, 1989Date of Patent: February 11, 1992Assignee: W. R. Grace & Co.-ConnInventors: Solomon Bekele, Allen C. Williams, Jr.
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Patent number: 5075143Abstract: A multi-layer film useful in vacuum skin packaging and other vacuum packaging applications, and having a combination of good implosion resistance, formability and high oxygen barrier characteristics, includes a core layer having an oxygen barrier material, intermediate layers of EVA or other ethylene homopolymer or copolymers, polymeric adhesive layers which bond the intermediate layers to respective surfaces of the core layer, a first outer heat-sealable layer, a second outer heat resistant layer, and two moisture resistant layers disposed between respective outer and intermediate layers.Type: GrantFiled: September 29, 1989Date of Patent: December 24, 1991Assignee: W. R. Grace & Co.-Conn.Inventor: Solomon Bekele
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Patent number: 4956212Abstract: A vacuum skin package for packaging fresh red meat and like articles is produced by using a composite, multilayer, oxygen barrier, vacuum skin package forming film in which the barrier layer can be manually separated from the non-barrier, oxygen permeable layer. After the vacuum skin package is formed to enclose a fresh red meat product in a vacuum the meat will have a purplish color. Then, after storage, the barrier layer can be removed so that the remaining permeable film can admit oxygen to impart the desirable red bloom to the fresh meat. Of importance is the "tear through" feature of the permeable inner layer which has a greater bond strength to the tray than internal strength or layer-to-layer bond strength so that a tab may be torn loose at a score line and then the barrier layer may be readily delaminated and peeled from the permeable layer.Type: GrantFiled: November 17, 1988Date of Patent: September 11, 1990Assignee: W. R. Grace & Co. -Conn.Inventor: Solomon Bekele
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Patent number: 4927691Abstract: A multilayer film useful in vacuum skin packaging and other vacuum packaging applications, having improved implosion resistance and resistance to bridging, includes core and intermediate layers of EVA, layers of polymer between the EVA layers, and abuse and sealant layers. A barrier version includes a core layer of oxygen barrier polymeric material.Type: GrantFiled: October 16, 1987Date of Patent: May 22, 1990Assignee: W. R. Grace & Co.-Conn.Inventor: Solomon Bekele
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Patent number: 4909726Abstract: A multilayer film useful in chub packaging includes a heat sealable layer, an abuse layer of very low density polyethylene, a polyamide or copolyamide layer, an oxygen barrier layer, a layer comprising nylon 6 or nucleated nylon 6, and a self-weldable layer.An alternate construction can be made without the abuse layer of very low density polyethylene, and includes an additional self-weldable layer. The film is made of a double-wound lay-flat tubular film. The film exhibits excellent impact resistant properties.Type: GrantFiled: September 6, 1988Date of Patent: March 20, 1990Assignee: Grumman Aerospace CorporationInventor: Solomon Bekele