Patents Represented by Attorney William D. Lee, Jr.

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  • Printing plate mounter
    Patent number: 4743324
    Abstract: An apparatus for mounting a flexible printing plate on a printing cylinder comprises a table comprising a planar surface and two separable sections, whereby the sections when separated can accommodate therebetween an upper surface of the printing cylinder. The printing plate is aligned on the table in order to accurately mount the printing plate on the cylinder. The table is then separated and the cylinder moved into contact with the plate which is then adhered thereto as the cylinder is rotated.
    Type: Grant
    Filed: August 20, 1986
    Date of Patent: May 10, 1988
    Assignee: W. R. Grace & Co., Cryovac Div.
    Inventors: Donald R. Boyce, Thomas O'Neal Harrelson, Tony R. Phillips
  • Thermoformable laminate
    Patent number: 4735855
    Abstract: A thermoformable polymeric laminate with good optical properties, extended shelf life, and memory characteristics comprises a core layer comprising an oxygen barrier material; a polyamide layer disposed on each surface respectively of the core layer, the polyamide having controlled crystallinity; a sealant layer; an outer layer comprising a moisture barrier material; and an intermediate layer disposed between the polyamide layer and each of the sealant layer and outer layer respectively, and comprising an anhydride grafted polyolefin.
    Type: Grant
    Filed: August 4, 1986
    Date of Patent: April 5, 1988
    Assignee: W. R. Grace & Co., Cryovac Div.
    Inventors: George D. Wofford, Jack L. Shriver, Jr.
  • Packaging material for long-term storage of shelf stable food products and method of making same
    Patent number: 4729926
    Abstract: A thermoplastic laminate suitable for long-term storage of shelf stable food products includes a first substrate comprising a layer of ethylene vinyl alcohol copolymer and a layer of a polyamide; and a second substrate bonded to the first substrate and comprising a vinylidene chloride copolymer. Polyamide may be included in a separate and distinct third substrate disposed between the first and second substrates.
    Type: Grant
    Filed: December 4, 1986
    Date of Patent: March 8, 1988
    Assignee: W. R. Grace & Co., Cryovac Div.
    Inventors: Randal M. Koteles, John G. Bradfute
  • Apparatus and method for inserting pouches into boxes
    Patent number: 4729209
    Abstract: An apparatus and method for inserting pouches into boxes or lining boxes with pouches is disclosed. Rather than manually line boxes, the apparatus takes a pouch from a horizontal stack of pouches, opens the pouch over an open box, partially inflates the pouch, and, inserts the pouch into the box. A vertically reciprocating mandrel is included with tucker fingers to fold the bag's mouth over the outside perimeter of the box thus presenting a line box ready to receive a product.
    Type: Grant
    Filed: October 16, 1986
    Date of Patent: March 8, 1988
    Assignee: W. R. Grace & Co., Cryovac Div.
    Inventors: Joseph E. Owensby, Fred A. Dobbins
  • Easy open shrinkable laminate
    Patent number: 4729476
    Abstract: An easily opened package suitable for food products such as ring sausage and the like includes a first web with a sealant layer of ethylene vinyl acetate copolymer and an ionomer, and a second web including a sealant layer of an ionomer. A resulting package exhibits good self-welding characteristics and seal strength, and an easily peelable seal.
    Type: Grant
    Filed: September 25, 1986
    Date of Patent: March 8, 1988
    Assignee: W.R. Grace & Co., Cryovac Div.
    Inventors: Cedric M. Lulham, George D. Wofford, John G. Bradfute, Steven G. Friedrich
  • Oxygen barrier oriented film
    Patent number: 4726984
    Abstract: A coextruded multiple layer oriented film is provided which comprises a core layer of ethylene vinyl alcohol copolymer, two intermediate adhesive layers, and two outer layers of a blend of ethylene propylene copolymer and polypropylene. A preferred embodiment of the multi-layer film exhibits excellent optical properties, and shrink properties while providing high oxygen barrier especially useful in food packaging applications.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: February 23, 1988
    Assignee: W. R. Grace & Co.
    Inventor: Gautam P. Shah
  • Chemically stabilized film
    Patent number: 4726997
    Abstract: In a multilayer flexible film suitable for medical solution packaging, film-derived extractables are controlled by the use of a small amount of a high molecular weight stabilizer in the outer layer of the film. Solution pH can be controlled by the addition of a carbonate of an alkali metal to at least one intermediate adhesive layer and/or the core layer of the film.
    Type: Grant
    Filed: August 26, 1986
    Date of Patent: February 23, 1988
    Assignee: W. R. Grace & Co., Cryovac Div.
    Inventors: Walter B. Mueller, Henry G. Schirmer
  • Oxygen barrier oriented film
    Patent number: 4724185
    Abstract: A coextruded multiple layer oriented film comprises a core layer of a blend of ethylene vinyl alcohol copolymer and polyamide, two intermediate adhesive layers, and two outer layers of a blend of linear low density polyethylene, linear medium density polyethylene, and ethylene vinyl acetate copolymer. A preferred embodiment of the multilayer film exhibits excellent optics and shrink properties while providing high oxygen barrier especially useful in food packaging applications.
    Type: Grant
    Filed: September 17, 1985
    Date of Patent: February 9, 1988
    Assignee: W. R. Grace & Co., Cryovac Div.
    Inventor: Gautam P. Shah
  • Non-smear food package and process for making same
    Patent number: 4722167
    Abstract: Smearing of fat by fat-containing trayed food products on the interior surface of a thermoplastic overwrap is substantially reduced or eliminated by applying loading forces during a sealing step to the longitudinal edges of the tray containing food product. A tray with a convex bottom is preferred to enhance the quality of the seal. A convex heating plate can be used in conjunction with conventional trays.
    Type: Grant
    Filed: November 10, 1986
    Date of Patent: February 2, 1988
    Assignee: W.R. Grace & Co., Cryovac Div.
    Inventor: Robert E. Jahn
  • Cross seal cooling for vertical form fill seal apparatus
    Patent number: 4719741
    Abstract: A method and apparatus for improving transverse seal strength in a vertical form-fill-seal machine includes directing a cooling medium on a just formed transverse seal from an area beneath and on either side of the film, in an arcuate pattern to effect cooling during at least a portion of the downward movement of the seal toward a cutting means.
    Type: Grant
    Filed: December 8, 1986
    Date of Patent: January 19, 1988
    Assignee: W. R. Grace & Co., Cryovac Div.
    Inventor: James R. Mabry
  • Vertical form-fill seal process and machine with product catching device
    Patent number: 4709532
    Abstract: A vertical form, fill, and seal process and apparatus for individually packaging easily bruised articles of produce such as apples, pears, tomatoes, etc. by catching each article as it is dropped through a tube of thermoplastic, heat sealable film and simultaneously sealing and severing the tube below the caught article without the article forceably contacting the hot seal or striking the heat sealing means.
    Type: Grant
    Filed: December 3, 1986
    Date of Patent: December 1, 1987
    Assignee: W. R. Grace & Co., Cryovac Div.
    Inventor: Monroe F. Taylor
  • Apparatus and method for packaging articles
    Patent number: 4704843
    Abstract: Conventional horizontal form-fill-seal equipment for packaging articles such as cheese can be improved by the use of shrink barrier films. In conjunction with the use of such films, the improvement includes means for supporting the film prior to longitudinally sealing to form a tube, and means for heating sealing elements of transverse impulse type sealing dies for a limited duration, to effect sealing of the tube formed from the film.
    Type: Grant
    Filed: September 26, 1986
    Date of Patent: November 10, 1987
    Assignee: W. R. Grace & Co., Cryovac Div.
    Inventors: Dave L. Owen, David K. Domnitz
  • Method for making a puncture resistant bag
    Patent number: 4704101
    Abstract: A seamless, puncture resistant bag is made by advancing a lay-flat seamless tube of thermoplastic film; forming an alternating series of fused-unfused segments along said lay-flat tube by internally fusing said lay-flat tube at regular intervals, the unfused segment length being approximately equal to the fused segment length; treating the external surface of the lay-flat tube to render said surface self adherent; periodically folding back the lay-flat tube towards its treated surface at the juncture between the leading fused-unfused segments of the lay-flat tube; pressing the folded portion of the lay-flat tube; and severing the folded portion from the tube.
    Type: Grant
    Filed: September 17, 1986
    Date of Patent: November 3, 1987
    Assignee: W.R. Grace & Co., Cryovac Div.
    Inventor: Henry G. Schirmer
  • Vinylidene chloride composition and film made therefrom
    Patent number: 4698111
    Abstract: This invention relates to films made from vinylidene chloride polymers or copolymers. Specifically, this invention relates to a method and composition for lowering the oxygen permeability and enhancing the thermal stability of mono-layer and multi-layer packaging films having a plasticized layer of vinylidene chloride copolymer film.
    Type: Grant
    Filed: December 19, 1986
    Date of Patent: October 6, 1987
    Assignee: W. R. Grace & Co., Cryovac Div.
    Inventor: Marvin R. Havens
  • Taped bag chain with cassette
    Patent number: 4693372
    Abstract: A bag chain for feeding packaging bags to a bag loader includes bags 2a,2b,2c imbricated and carried by a pair of parallel carrier tapes 3 and 4 which are wound up on spools 8 and 9 of a cassette 5. Loading the bag chain is a bag indexing drive unit involves simply placing the cassette 5 into position with the spools 8 and 9 engaged with parallel drive dogs 11 and 12, after which operation of a drive motor 15, driving the dogs 11 and 12 through a differential unit 14-22 indexes the bags 2a,2b,2c . . . and winds up the tapes 3 and 4. Upon complete consumption of the bag chain, the cassette can be removed and replaced by a fresh cassette with the tapes outside the cassette and carrying the imbricated bags.
    Type: Grant
    Filed: December 9, 1985
    Date of Patent: September 15, 1987
    Assignee: W. R. Grace & Co., Cryovac Div.
    Inventor: Ronan R. O'Neill
  • Silent film for ostomy pouches
    Patent number: 4687711
    Abstract: This invention relates to films which have a high degree of silence and pliability and comprise at least one layer formed from a polymeric blend which includes about 40% to 60% by weight of any ethylene and vinyl-acetate copolymer and about 60% to 40% by weight of an elastomeric polyolefin. The elastomeric polyolefin preferably comprises a blend or "alloy" of an ethylene and vinyl-acetate copolymer and an elastomeric ethylene and propylene copolymer. Such films are particularly useful for manufacturing drainage containers or bags for medical applications.
    Type: Grant
    Filed: February 6, 1986
    Date of Patent: August 18, 1987
    Assignee: W. R. Grace & Co., Cryovac Div.
    Inventors: Paolo Vietto, Francesco Martini
  • Vinylidene chloride composition and film made therefrom
    Patent number: 4686148
    Abstract: This invention relates to films made from vinylidene chloride polymers or copolymers. Specifically, this invention relates to a method and composition for lowering the oxygen permeability and enhancing the thermal stability of mono-layer and multi-layer packaging films having a plasticized layer of vinylidene chloride copolymer film.
    Type: Grant
    Filed: July 15, 1985
    Date of Patent: August 11, 1987
    Assignee: W. R. Grace & Co., Cryovac Div.
    Inventor: Marvin R. Havens
  • Container for carrying, transporting, shipping, or installing circuit boards
    Patent number: D291558
    Type: Grant
    Filed: September 27, 1984
    Date of Patent: August 25, 1987
    Assignee: W. R. Grace & Co., Cryovac Div.
    Inventor: Frederick S. Fonville
  • Wall mounted holder for vacuum cleaner accessories
    Patent number: D294756
    Type: Grant
    Filed: June 20, 1985
    Date of Patent: March 15, 1988
    Assignee: W. R. Grace & Co., Cryovac Div.
    Inventor: Frederick S. Fonville
  • Container for vacuum cleaner accessories
    Patent number: D295334
    Type: Grant
    Filed: June 20, 1985
    Date of Patent: April 19, 1988
    Assignee: W. R. Grace & Co., Cryovac Div.
    Inventor: Frederick S. Fonville