Class 383/201 - Tearing facilitated by specified fiber or molecular orientation

Subclass of Class 383 - Flexible bags
Definition: Subject matter wherein the bag material or an attached tearing
No. of patents: 38
Last issue date: 02/19/2008

Number	Title	Issue Date
7331716	Flexible container, method of forming the flexible container, seal-breaking guide of the flexible container, method of enclosing liquid in the flexible container and the liquid enclosed in the flexible container There are provided a flexible container capable of realizing facilitation of opening and uniformization of the shape of an opening that is obtained by opening, a method of forming the flexible container, a seal-breaking guide of the flexible container, a method of e...	02/19/2008
7291370	Packaging material and containers formed therefrom The flexible, reusable packaging container of the present invention is comprised of a packaging material. The packaging material is comprised of one or more layers of coating disposed on one or more layers of textile substrate. The coating layer may be comprised of ...	11/06/2007
7118792	Films, packaging and methods for making them There is described a flexible oriented film (301) which acts a replacement for tear film, the film (301) having at least one tear susceptible line (307, 309) or pattern thereon (preferably weaker than the surrounding film), the film tearing subs...	10/10/2006
7051876	Pilfer-resistant packaging with criss-cross grain pattern A clamshell package for displaying and housing products or other objects that is substantially pilfer-resistant, yet safe to open. The clamshell packaging includes a substantially tear-resistant housing that encloses a display chamber by criss-cross grain material t...	05/30/2006
7004339	Infant feeding and storage system A breast milk feeding and storage system is provided. The system has a liner having an open end, a holder having an open end, and an adapter system. The liner open end and the adapter system are engageable with the holder open end to allow a user to selectively inse...	02/28/2006
6997858	Side gusseted poly bag with a filling valve and its method of manufacture A side gusseted poly bag with a filling valve and its method of manufacture including a tubular body with opposed side gussets defining front and rear panels, and a filling valve formed by folding the front and rear panels with the interconnecting gusset portion at ...	02/14/2006
6969197	Sterilizable package A sterilizable package is formed of a first sheet connected to a second sheet. The first sheet forms a first side of the package and a portion of the second side of the package. The second sheet is connected to the first sheet to define an interior chamber of the pa...	11/29/2005
6957915	Standup bag and method of manufacturing same A standup bag for granular products or the like and a method of manufacturing the bag. The standup bag is manufactured from an extruded heat sealable material and includes both an integral handle and a perforation to facilitate opening and pouring out the contents o...	10/25/2005
6866149	Barrier envelopes for reusable photo-stimulable phosphor imaging plates A barrier envelope for reusable photo-stimulable phosphor imaging plates, particularly for digital dental imaging comprised of a plastic transparent film and a plastic opaque film sealed to each other about three sides thereof defining a chamber for an imaging plate...	03/15/2005
6718738	Plastic film bag assembly and process of filling A plastic film bag assembly includes a bag having front and back walls joined together and defining an opening leading to a cavity. A header portion extends from the back wall for supporting the bag on a structure. A severance line extends across the header and incl...	04/13/2004
6715919	Paper bag with film inner bag A paper bag with a film inner bag in which the inner bag element is constructed so that its closed end portions can be torn in the lateral direction, thus allowing easy opening by hand across the entire width of the bag or across a part of this width. The inner bag ...	04/06/2004
6416841	Tear tape for plastic packaging A heat resistant and heat sealable tear tape that can be used with a plastic package. The tear tape comprises a layer of an oriented film and a layer of a polymer sealant material. The polymer sealant has a melt temperature of below approximately 220° F....	07/09/2002
6390676	Reclosable package using straight tear film and process for manufacture A reclosable film package for storage of solid or liquid food products using a straight-tear film package having a zipper. The straight-tear films allow for tearing of the film along straight lines without perforating or laser scoring of the film allowing...	05/21/2002
6224262	Bag with perforated opening and reinforcing patch A recloseable bag includes a bag body having a first wall and a second wall connected together substantially around proximate perimeters. The bag includesa first openable joint formed as perforations through the first wall and a patch secured to the first...	05/01/2001
6156441	Easily tearable biaxially oriented polyester film The present invention provides a biaxially oriented polyester film having a linearly tearable property at least in a longitudinal direction, and excellent in the producability at mass production scale, which can be produced from the mixture of polybutylen...	12/05/2000
6105776	Pack of articles packaged using a plastic film and process for the manufacture of the plastic film A pack of articles (2) packaged using a plastic material film (3) having a preferred direction of tearing (D), a plurality of articles (2) being disposed side by side in one or more superposed layers, the film being folded over along a winding direction (...	08/22/2000
6102571	Packaging bag A packaging bag comprises a tubular body obtained by joining opposite ends of a strip film comprising a lamination of oriented and non-oriented films to each other so as to form a longitudinal sealed portion. The tubular body has at opposite sides in its ...	08/15/2000
5984088	Easy open package and method of making same The present invention provides kits of orthopedic casting materials comprising a sheet of curable casting material, a lubricant, and an air and water impermeable package comprising a laminate sheet material and a means for facilitating tearing of the shee...	11/16/1999
5957584	Flexible tamper-evident package with integral fitment A flexible package having an integral fitment and integral protective tamper-evident structure protecting said fitment until removal of said protective structure by a user, is disclosed....	09/28/1999
5897052	Easily laterally opened type paper container The provision of an easily laterally opened type paper container includes: a paper base material which is made of material having thermoplastic resin layers on both sides thereof; an opening piece which is formed of a resin film, and sandwiched and bonded...	04/27/1999
5620095	Orthopedic casting material and hermetic package A kit of curable orthopedic casting/splinting materials in a substantially hermetic heat sealed pouch formed from laminate sheet-material having a heat sealable inner layer bonded to an outer layer. The pouch includes a multiplicity of fibers that facilit...	04/15/1997
5613779	Pouch A pouch adapted to accommodate medicine or the like comprising first and second compound films forming front and back surfaces of a pouch. Each of these compound films is composed of a resin film having a predetermined tear strength and a resin film havin...	03/25/1997
5556674	Ready-tear packaging Heat-shrinkable coextrudate thermoplastic film packaging materials, well suited for the packaging of any one or more of a wide variety of articles, e.g., canned goods, and readily torn in a transverse direction substantially perpendicular to the machine d...	09/17/1996
5366295	Flexible easy-opening pack A flexible liquid impermeable package is in the form of a tubular bag and has a tear-strip for opening the bag. The bag is made of monoaxially or biaxially stretched polyolefin film, and has opposed transverse welds and a longitudinal weld which is parall...	11/22/1994
5169696	Film laminate with easy TD tear A transversely tearable film and pouches made therefrom are disclosed. The transversely tearable laminate comprises a machine direction oriented linear low density polyethylene film adhesively laminated on at least one side to a sealant film, the sealant ...	12/08/1992
5046621	Tamper evident notched sealing envelope An improved flexible envelope for use as a mailing pouch or evidence preservation package. The envelope is constructed of a metalized polyester material which is characterized by an incision in a wall of said envelope which is sealed by a pressure sensiti...	09/10/1991
4903843	Foil sheath for objects, especially packages of goods A sheath for wrapping objects has a sheath body which extends over a circumferential surface (4) of an object (1) and comprises at least portions of a shrink foil pre-stretched in a circumferential direction. The sheath has a significant cohesion of the s...	02/27/1990
4903841	Pouch with superposed tear lines A pouch formed of a laminate sheet for containing therein a content such as retort food. Both lateral sides of front and rear walls of the pouch are heat sealed with each other, and top opening is also heat sealed together to sealingly maintain the conten...	02/27/1990
4834245	Pouch having tearing zone for taking out content packed therein A pouch for containing therein a content including front and rear pouch bodies formed of a laminated film, and heat-sealed portions at confronting side edge portions of the front and rear pouch bodies for providing a fluid tight structure of the pouch. Th...	05/30/1989
4781294	Tear oriented package A tear oriented package is provided and is formed of a pair of wall members sealed together about their peripheral edges when aligned with one another. In this manner a sealed chamber is formed therebetween for holding preselected items therein. At least ...	11/01/1988
4781297	Readily tearable package for sterile articles A package for sterile articles, comprising a paper part and a plastic part connected to the paper part along longitudinal and transverse lines. The plastic part comprises a linearly oriented plastic film material which can be torn in its direction of orie...	11/01/1988
4781296	Method affording an easy opening device for nonwoven thermoplastic fiber envelopes A method of forming one or more score lines or bands of weakness in a web formed of nonwoven thermoplastic fibers requires the application of sufficient energy such as ultrasonic energy to narrow bands of the web to change the fibers to a film. An envelop...	11/01/1988
4762230	Tear oriented package A tear oriented package is provided and is formed of a pair of wall members sealed together about their peripheral edges when aligned with one another. In this manner a sealed chamber is formed therebetween for holding preselected items therein. At least ...	08/09/1988
4600104	Bag for mother's milk A bag for the preservation of mother's milk made of a laminated film or laminated tube obtained from an extrusion molding, wherein said bag comprises sealing portion(s) provided on the side(s) of the bag and extended in the transverse direction to the dir...	07/15/1986
4333570	Merchandising package for containers Disclosed is a multiple container merchandising package comprising a group of similarly shaped containers held together in side-by-side fashion by a plastic overwrap comprising an opaque, uniaxially oriented, laminated, composite sleeve of thermoplastic f...	06/08/1982
4229407	Tear path products, method and apparatus Polymer sheets or films are provided with tear paths that are substantially indistinguishable from the remainder of the polymer sheet or film in outward appearance and in chemical properties. Throughout the tear path, molecular chains of the polymer are o...	10/21/1980
4192420	Flexible and pliable moisture-impervious package A flexible, moisture-impervious package for moistened webs includes a pocket portion and a flap section. The pocket portion includes an interior compartment in which the moistened webs are retained. A weakened region provided in a top wall of the pocket p...	03/11/1980
4098406	Polymer film having linear tear properties Certain blends or mixtures of polyethylene and ionomer resins are blow extruded to make a film having excellent linear tear properties in the direction of extrusion, which property is not found in films of either of the resins alone....	07/04/1978

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Class 383/201 - Tearing facilitated by specified fiber or molecular orientation