Abstract: A fluid handling and delivery system useful in generating a fluid stream in the flow path of microfluidic device.

Abstract: A package (10) for an elongated article has a sheet material with side (1, 6), upper (2, 5) and lower (3, 4) panels. The side panels are arranged to confront one another at a fin (20) and are at least partially adhered to one another at a longitudinal fin seal (28). The upper and lower panels extend from the fin to define a package body (12) which receives the elongated article. First and second end portions of the sheet material confront one another and are adhered to one another to form first and second end seals (16, 18) which enclose the interior cavity (14) of the package body. A starter line (36) is formed in the fin and extends from a free edge (24) thereof toward non-sealed portions (32) of the panels (1, 6) of the package.

Abstract: An easy open bag and method for making the same. A film is fed into a jaw assembly comprising a first seal jaw comprising a blade gap and a second seal jaw comprising a removable insert. The removable insert comprises a blade pin. When the first and second seal jaws are mated, a notch is formed. The film also comprises a score line in the outer layer. Upon tearing the notch the tear propagates along the score line. Thus, the package can be easily opened by initiating a tear at a tear notch.

Abstract: A packaging receptacle, made from a flexible film, has a first side sealed to a second side, a top edge and an open top, an interior chamber, and a tear initiator. A product is placed in the internal chamber within the packaging receptacle, and the receptacle sealed closed. The flexible film has a linear tear property and an imbalanced internal stress so that the film exhibits a linear tear property in combination with the torn edges curling outwardly and away from the interior chamber within the packaging article. The packaging receptacle is particularly suited for the packaging of medical products to be sterilized while in the package. Also disclosed is a manually-openable packaged product, a process for preparing and transferring a product, and a process of opening a packaged product made from a packaging receptacle.

Abstract: A product, such as a roll of paper toweling, is wrapped in a polymeric film wrapper having a high degree of molecular orientation. The wrapper is provided with a small perforated starter tab, which a user can depress with their fingers or thumb to break the perforations. Upon breaking the perforations, the user can grasp the tab of the wrapper and thereafter open the package by pulling on the wrapper in the same direction as the molecular orientation direction of the wrapper. The high degree of molecular orientation allows the package to be cleanly torn open with very little effort.

Abstract: An easy open bag and method for making the same. A film is fed into a jaw assembly comprising a first seal jaw comprising a blade gap and a second seal jaw comprising a removable insert. The removable insert comprises a blade pin. When the first and second seal jaws are mated, a notch is formed. The film also comprises a score line in the outer layer. Upon tearing the notch the tear propagates along the score line. Thus, the package can be easily opened by initiating a tear at a tear notch.

Abstract: A bag (1) for storing perishable products such as fresh fruit and vegetables is disclosed. The bag is formed from a polymer film that has a film orientation direction and has an Elmendorf Tear Strength (ASTM D1922) in the range of 0.05 to 0.50 N in the film orientation direction. The bag comprises a bottom (8), an open top (10), a side wall comprising two wall sections (12,14) connected together by heat seals (2) extending between the top and the bottom of the bag. The bag is formed so that the film orientation direction of the film in the side wall is transverse to the heat seals. The bag also comprises a skirt (5) extending outwardly from each heat seal and at least one tear initiation notch (3) in at least one skirt.

Abstract: A description is given of a paper valve bag with an inner panel which is located at the paper-bag end which is located opposite the paper-bag end with valve, and, on its surface which is directed toward the sack interior, the inner panel has an opening aid which has a higher modulus of elasticity than the inner panel. The opening aid, which may be a tear-open strip or a tear-open thread, projects beyond the inner panel at at least one surface-area end of the latter. Such paper valve bags are used for fine-grain, pulverulent and/or free-flowing materials, in particular ready-to-use mortar.

Abstract: A packaging bag (10) that is made of a flexible film-shaped first material and includes an opening part (26) which can be cut along a tearing line (24) extending perpendicular to a longitudinal axis of the bag as well as an external packaging (30) made of a substantially dimensionally stable second material. The openings of the tubular external packaging (30) lie on a plane that runs vertical to the axis of the tube while the end of the bag which protrudes from the external packaging (30) can be folded inside out over the edge of the external packaging (30) after cutting the opening part (26).

Abstract: 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 and wherein a free side of each film is formed with a flap and one flap is coated with an adhesive medium protected by a peel strip and wherein a “Y” shaped notch is provided on a side of the barrier envelope adjacent to the free side of each film the barrier envelope to facilitate tearing open of the barrier envelope in a removal procedure and transport of an exposed imaging plate to an optical scanning assembly.

Abstract: A packaging member (1, 80, 100) is provided with easy-opening means (7, 85, 107, 108) for allowing the packaging member to be opened easily, wherein the easy-opening means is either positionally or structurally improved. As one example, the packaging member is a packaging bag (1, 80), in which the easy-opening means serves as a tearing start point when opened with the use of the easy-opening means. The easy-opening portion is formed at a position slightly shifted inward from a perimeter edge of the packaging bag. As another example, the packaging member is a packaging container (100), in which the easy-opening means is structurally improved.

Abstract: 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 includes tear sections extending inwardly from each of the header side edges. The severance line also includes support sections adjacent and inwardly of the tear sections. The support sections have a strength per unit length of severance line which is greater than the tear sections strength per unit length of severance line whereby, when severing the bag away from the header, a greater force is required for severing along the severance line support sections than the force required for severing along the tear sections. In use, the bag front wall lip is grasped and pulled away from the header for separating complementary profiles and opening the bag. The header tear sections are severed until reaching the support sections.

Abstract: 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 element consists of a synthetic resin film and has cut portions formed along the longitudinal direction in the end portions of the bag that are closed by heat-sealing and that are planned to be opened in the future. The end portion constituting the bottom part is closed by heat-sealing, or by being folded together with the outer bag element or stitched with a sewing machine. The outer bag element, which consists of at least one layer, is formed mainly from craft paper. The synthetic resin film that forms the inner bag element is formed from a thermoplastic resin, and has the property of easy tearing in one axial direction.

Abstract: 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 element consists of a synthetic resin film and has cut portions formed along the longitudinal direction in the end portions of the bag that are closed by heat-sealing and that are planned to be opened in the future. The end portion constituting the bottom part is closed by heat-sealing, or by being folded together with the outer bag element or stitched with a sewing machine. The outer bag element, which consists of at least one layer, is formed mainly from craft paper. The synthetic resin film that forms the inner bag element is formed from a thermoplastic resin, and has the property of easy tearing in one axial direction.

Abstract: 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. A plastic package can be made having a tear tape to provide a hermetically sealed package with a tear tape.

Abstract: 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 optimal integrity of the package and product.

Abstract: 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 wall over the first openable joint. The patch has a second openable joint formed as perforations in registry with the perforations of the first openable joint. The patch can be composed of a material that tears in a controlled fashion along the perforations of the second openable joint. A zipper arrangement can be sealed to the inside surface of the patch.

Abstract: 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 polybutylene terephthalate containing 5 to 20% by weight of a polytetramethylene glycol (PTMG) unit having a molecular weight of 600 to 4,000 (modified PBT) and polyethylene terephthalate (PET) in a weight ratio (PET/modified PBT) of 70/30 to 95/5.

Abstract: 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 (E) around the articles which it retains, opening means being provided on the film to facilitate the tearing thereof. The means for opening the film (3) comprise a continuous zone of weakening (A), which zone is oriented transversely to the preferred direction of tearing (D), and forming a band (6) which surrounds the pack, this zone of weakening (A) having a mechanical strength which is sufficiently high to bear the traction stresses exerted on the film to retain the articles, but sufficiently low to permit opening of the film, without a tool, at any point whatsoever of the zone.

Abstract: 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 diametrical direction crease portions, respectively, and has at opposite edges in its longitudinal direction lateral sealed portions, respectively. The crease portion has the first tearable zone, which can be torn at longitudinal different positions. The longitudinal sealed portion is located on the back surface side of the bag and has the second tearable zone, which can be torn at longitudinal different positions. The second tearable zone has a length identical with or longer than that of the first tearable zone. The upper edge of the second tearable zone is located in the same level as or above the upper edge of the first tearable zone and the lower edge of the former is located in the same level as or below the lower edge of the latter.

Abstract: 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 sheet material when the outer surface of the pouch has been contacted with the lubricant. In a preferred embodiment of the present invention the means for facilitating the tearing of the sheet comprises a matte-finish paper label material adhered to the outer surface of the package and crossing a cut. In another preferred embodiment of the present invention the means for facilitating the tearing of the sheet comprises a plurality of perforations through the sealed portion of the package adjacent a cut.

Abstract: 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.

Abstract: 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 between an upper piece and a lower piece of an overlap width portion of the paper base material which is overlapped and laminated on each other with a picking length; a notch portion defined in the upper piece of said overlap width portion in correspondence with both ends of said opening piece laterally; and an oriented polyolefine film having such a characteristic that an orientation magnification of the film in one direction is larger than that in a direction orthogonal to the one direction, which is stacked on an inner surface of the paper container material in such a manner that the one direction having the larger orientation magnification coincides with an opening direction of the paper container.

Abstract: 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 facilitate tearing the laminate sheet material in a predetermined direction. The multiplicity of fibers are disposed between the inner and outer layers of the laminate sheet material, and are generally equally spaced across the entire width of the material. A notch and a friction region are also preferably provided to facilitate tearing the pouch.

Abstract: 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 having a good heat adhesive property and the first mentioned resin film is provided with a linear slit on one side thereof having un-cut portions. These compound films are overlapped with each other with the resin films having the heat adhesive property being disposed inside so as to oppose each other and with the slits formed to the resin films of the compound films forming the front and back surfaces of the pouch being coincident with each other in positions. The compound films are then heat fused. When a pouch is formed by these compound films, the pouch has an orientation capable of being torn in a direction corresponding to an extending direction of said slit.

Abstract: 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 direction thereof, e.g., by the provision of a tab or pull member thereon, are shaped from(a) at least one layer of a polyolefin; and(b) at least one layer of a copolymer selected from among ionic copolymers of:(1) .alpha.-olefins of the formula R--CH.dbd.CH.sub.2 wherein R is hydrogen or an alkyl radical having from 1 to 8 carbon atoms, with(2) .alpha., .beta.-ethylenically unsaturated carboxylic acids having from 3 to 8 carbon atoms, and(3) optionally, an additional monoethylenically unsaturated comonomer; with the proviso that from 10% to 90% of the carboxylic acid functions of such copolymer are ionized by neutralization by means of metallic ions distributed over the copolymer.

Abstract: 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 parallel to a stretched orientation of the film for sealing the bag. The tear strip is heat-welded to an outer surface of a wall of the bag, disposed away from and parallel to the longitudinal weld. The tear strip is made of polyolefin, and has a thickness greater than the thickness of the polyolefin film of the bag.The invention relates to a flexible liquid-tight bag intended for a liquid food product or a food product containing a solid product immersed in a liquid, comprising a tear strip for easy opening of the bag with no spurting of liquid.The tear strip is applied by heat sealing to the outer surface of the bag in the stretching direction of the constituent film of the bag.