Patent application number | Description | Published |
20090000253 | Flexible Storage Bag - The flexible storage bag includes overlaying first and second sidewalls defining an internal volume that can be accessed from an open top edge. To evacuate air from the internal volume after the open top edge has been closed, the bag includes a one-way valve element attached to the first sidewall and communicating with the internal volume. To prevent the one-way valve element from becoming clogged by the opposing second sidewall, the bag also includes a textured portion that maintains at least a partial clearance between the first and second sidewalls proximate the valve element. To prevent contamination of the valve element, the textured portion can also be configured to facilitate removal of liquids and juices from air exhausting from the storage bag. | 01-01-2009 |
20090290817 | Flexible Storage Bag - The flexible bag includes overlaying first and second sidewalls that provide an internal volume that can be accessed via an opening. To evacuate air from the internal volume after the open top edge has been closed, the bag includes a one-way valve element attached to the first sidewall. The bag is configured to prevent objects from clogging the valve element during evacuation. In one embodiment, the bag may include a plurality of ridges formed along the inner surface of at least one sidewall that can maintain separation of the sidewalls and contents from the valve element. In another aspect, the valve element is beneficially located at a top corner of the bag where the valve element is spaced apart from those locations in the bag where contents are likely to collect. | 11-26-2009 |
20100014789 | VACUUM STORAGE BAG - A vacuum storage bag providing an interior volume for storing food items in an evacuated condition has air flexible sidewalls made of a gas permeable material. The gas permeable sidewalls can be made of multiple layers including a heat sealing innermost layer and a relatively stronger, outwardly disposed gas permeable layer. The heat sealing layer can be low density polyethylene to facilitate forming of the bag with heat seals and the stronger gas permeable layer can be high density polyethylene to provide the bag with sufficient strength and toughness. In various embodiments, the storage bag can include interlocking closure strips for releasably closing an opening, a one-way vacuum valve for evacuating the interior volume, and a textured portion along one sidewall to facilitate evacuation. | 01-21-2010 |
20100177989 | BAG - The bag may include a first sidewall, a second sidewall, a first fastening strip and a second fastening strip. The fastening strips may include a base portion having a pair of spaced-apart webs extending from the base portion. The webs may include hook portions extending from the webs. The fastening strips may have wide base portions. The fastening strips may have thick base portions. The fastening strips may provide a greater surface area for the user to apply a force during the occlusion process and may reduce the occlusion effort. The fastening strips may have a lower occlusion force. The fastening strips may provide improved alignment of the fastening strips. The fastening strips may have an improved perception of seal security with a high opening force and/or a high peel force. | 07-15-2010 |
20100218461 | VACUUM STORAGE SYSTEM - A vacuum storage system can have a storage container such as a semi-rigid bowl or a flexible thermoplastic bag and an evacuation device for evacuating the container. To draw air from the storage container, the container can be equipped with a one-way valve element attached to a exterior sidewall of the container. The valve element can interface with a nozzle of the evacuation device. The valve element is adaptable between a normal condition in which the valve element is closed, and an altered position in which the valve element is opened. To alter the valve element, the evacuation device includes a contact feature that can contact and displace the valve element. | 09-02-2010 |
20100299881 | Multistep Occluding Zipper with Sealing Features - A closure device for a thermoplastic bag which includes two opposing, longitudinally extending interlockable male and female fastening strips having respective male and female closure elements or profiles with outside wings that are deformed when the closure device is fully occluded. | 12-02-2010 |
20110117307 | Discontinuously Laminated Film - Polymer films may be discontinuously laminated by processes such as adhesive bonding, ultrasonic bonding, embossing, ring rolling, and strainable network formation. The films may be prestretched under cold process conditions before lamination. The laminates have superior properties such as tear strength. The laminates may be incorporated into bags, such as trash bags. | 05-19-2011 |
20120033900 | Non-Continuously Laminated Multi-Layered Bags - Multi-layer bags may be formed to include first and second sidewalls joined along a first side edge, an opposite second side edge, and a closed bottom edge. The first and second layers may be non-continuously laminated together to include bonded regions in which the layers are bonded and unbonded regions in which the layers are not bonded. Such a bag may be described as a “bag-in-a-bag” type configuration in which the inner bag is non-continuously bonded to the outer bag. The inventors have surprisingly found that such configurations of non-continuous bonding provides increased and unexpected strength properties to the multi-layer films and bags. | 02-09-2012 |
20120039549 | Multilayer Draw Tape - The bag includes a draw tape that may be used to cinch closed the opening of the bag. The draw tape is multilayer with a polypropylene core and propylene-ethylene copolymer or other suitable polymers in the outer layers. | 02-16-2012 |
20120039550 | Incrementally-Stretched Adhesively-Laminated Films and Methods for Making The Same - Incrementally-stretched adhesively-laminated films include two or more film layers adhesively bonded together. At least one of the two or more film layers is incrementally stretched. The incrementally-stretched adhesively-laminated films can have maintained or increased strength parameters despite a reduction in gauge. The incrementally-stretched adhesively-laminated films can be formed into bags for use as trash can liners or food storage. Methods of forming incrementally-stretched adhesively-laminated films include cold stretching one or more of the first and second film layers and adhesively bonding the film layers together. | 02-16-2012 |
20120063706 | Multi-Layered Bags With Discrete Non-Continuous Lamination - Multi-layer bags may be formed to include first and second sidewalls joined along a first side edge, an opposite second side edge, and a closed bottom edge. The first and second layers may be non-continuously laminated together in discrete sections to include bonded regions in which the layers are bonded and unbonded regions in which the layers are not bonded. Such a bag may be described as a “bag-in-a-bag” type configuration in which the inner bag is non-continuously bonded to the outer bag. The inventors have surprisingly found that such configurations of non-continuous bonding provides increased and unexpected strength properties to the multi-layer films and bags. | 03-15-2012 |
20120064271 | Multi-Layered Lightly-Laminated Films and Methods of Making The Same - Apparatus and methods for creating multi-layered lightly-laminated provide films with increased or maintained strength. An increased level of strength is achieved by bonding adjacent layers of the multi-layer film together in a manner that the bond strength of the laminated layers is less than a strength of a weakest tear resistance of the individual first and second film layers. The inventors have surprisingly found that such a configuration of light bonding provides increased and unexpected strength properties to the multi-layer film as compared to a monolayer film of equal thickness or a multi-layer film in which the plurality of layers are tightly bonded together. | 03-15-2012 |
20120134606 | Non-Continuously Laminated Multi-Layered Bags With Ribbed Patterns And Methods of Forming The Same - Methods for creating multi-layered bags with increased or maintained strength involve forming a ribbed pattern in one or more film layers of a multi-layered bag. The method also includes non-continuously laminating the film layers of the multi-layered bag together. In one or more implementation, a transverse direction ring rolling process forms the ribbed pattern and bonds the film layers together. In one or more additional implementations, the ribbed pattern and lamination are formed separately. Still further implementations include forming network patterns one or more film layers of a multi-layered bag. Multi-layered bags formed in accordance with one or more implementations of the present invention include one or more of increased strength or reduced basis weight. | 05-31-2012 |
20120163738 | Multi-Layered Bags With Shortened Inner Layer - Multi-layered bags include an outer layer or bag and an inner layer or bag that is shorter than the outer layer or bag. The shortened inner layer or bag can stretch or expand to the outer layer or bag when loaded with objects or otherwise strained. Such multi-layered bags can allow for a reduction in thermoplastic material without compromising the strength of the multi-layered bag. In various implementations, the inner layer or bag may be non-continuously laminated, continuously laminated, or joined only along one or more edges to the outer layer or bag. Implementations including non-continuous bonds securing the inner layer or bag to the outer layer or bag can provide additional strength to the bag. Methods of forming multi-layered bags with a shortened inner layer including inserting an inner layer within an outer layer and then joining the layers to form a bag. | 06-28-2012 |
20120251018 | BAG - The bag may include a first sidewall, a second sidewall, a first fastening strip and a second fastening strip. The fastening strips may include a base portion having a pair of spaced-apart webs extending from the base portion. The webs may include hook portions extending from the webs. The fastening strips may have wide base portions. The fastening strips may have thick base portions. The fastening strips may provide a greater surface area for the user to apply a force during the occlusion process and may reduce the occlusion effort. The fastening strips may have a lower occlusion force. The fastening strips may provide improved alignment of the fastening strips. The fastening strips may have an improved perception of seal security with a high opening force and/or a high peel force. | 10-04-2012 |
20120269465 | Thermoplastic Films With Visually-Distinct Stretched Regions and Methods For Making The Same - Thermoplastic films include intermittent stretched regions that are visually distinct from un-stretched regions. The stretched regions can be white, opaque, and non porous. The thermoplastic films with visually-distinct stretched regions can be formed into bags for use as trash can liners or food storage. Additionally, methods of stretching thermoplastic films to create non-porous, white, and opaque stretched regions include incrementally stretching a film of a thermoplastic material and a voiding agent. | 10-25-2012 |
20120269466 | Multi-Layered Films With Visually-Distinct Regions and Methods of Making The Same - Multi-layered thermoplastic films include intermittent stretched regions that are visually distinct from un-stretched regions. The stretched regions can be white, opaque, and non porous. The multi-layered thermoplastic films with visually-distinct stretched regions can be formed into bags for use as trash can liners or food storage. Additionally, methods of stretching thermoplastic films to create visually distinct stretched regions include incrementally stretching a plurality of film layers, at least one of which includes a thermoplastic material and a voiding agent. | 10-25-2012 |
20130028542 | Incrementally Stretched Films with Enhanced Properties and Methods for Making the Same - Methods of enhancing one or more physical properties of a thermoplastic film include incrementally stretching thermoplastic films in the machine direction and/or transverse direction. In one or more implementations, methods of incrementally stretching thermoplastic films include reducing the gauge of the films without reducing the films' machine-direction tear resistance. The methods can involve cold stretching the films and imparting rib patterns into the film. The linear ribs can have alternating thick and thin gauges. Incrementally stretched thermoplastic films can have a machine-direction tear resistance that is approximately equal to or greater than the machine-direction tear resistance of the film prior to stretching. | 01-31-2013 |
20130029066 | Incrementally Stretched Films with Increased Tear Resistance and Methods For Making The Same - Methods of incrementally stretching thermoplastic films in the machine direction include elongating the films in the machine direction without reducing the films' machine-direction tear resistance. In one or more implementations, methods of incrementally stretching thermoplastic films include reducing the gauge of the films without reducing the films' machine-direction tear resistance. The methods can involve cold stretching the films and imparting transverse-direction extending linear rib pattern into the film. The linear ribs can have alternating thick and thin gauges. Incrementally stretched thermoplastic films can have a machine-direction tear resistance that is approximately equal to or greater than the machine-direction tear resistance of the film prior to stretching. | 01-31-2013 |
20130051710 | Stretched Films with Maintained Tear Resistance and Methods for Making the Same - Methods of stretching thermoplastic films in the machine direction include elongating the films in the machine direction without significantly reducing the films' machine-direction tear resistance. In one or more implementations, methods of stretching thermoplastic films include reducing the gauge of the films while substantially maintaining the films' machine-direction tear resistance. The methods can involve uniformly cold stretching the films by stretching the films to a draw of about one hundred and eighty percent, or less, of the films' original length. | 02-28-2013 |
20130115396 | Incrementally-Stretched Thermoplastic Films and Bags with Increased Haze and Methods for Making The Same - Methods of increasing the haze of a thermoplastic film include incrementally stretching thermoplastic films in the machine direction. In one or more implementations, methods of incrementally stretching thermoplastic films include reducing the gauge of the films without reducing the films' haze. The methods can involve cold stretching the films and imparting rib patterns into the film. The linear ribs can have alternating thick and thin gauges. Incrementally stretched thermoplastic films can have a haze that is approximately equal to or greater than the haze of the film prior to stretching. | 05-09-2013 |
20130139472 | METHOD OF USING A VACUUM STORAGE SYSTEM - A vacuum storage system can have a storage container such as a semi-rigid bowl or a flexible thermoplastic bag and an evacuation device for evacuating the container. To draw air from the storage container, the container can be equipped with a one-way valve element attached to an exterior sidewall of the container. The valve element can interface with a nozzle of the evacuation device. The valve element is adaptable between a normal condition in which the valve element is closed, and an altered position in which the valve element is opened. To alter the valve element, the evacuation device includes a contact feature that can contact and displace the valve element. | 06-06-2013 |
20130188889 | Trash Bag With Inner Bag - Trash bags may be formed to include first and second sidewalls joined along a first side edge, an opposite second side edge, and a closed bottom edge to form an outer bag. A second inner bag may be inserted within the first bag to form a “bag-in-a-bag” type configuration in which the inner bag is bonded to the outer bag along side seals. When the outer and inner bags are formed primarily from LLDPE thermoplastic resin using a blown film process, the inventors have surprisingly found that such configurations provide increased and unexpected strength properties while using less material. | 07-25-2013 |
20130188891 | CONTINUOUS PROCESS FOR TRASH BAG WITH INNER BAG - Trash bags may be formed to include first and second sidewalls joined along a first side edge, an opposite second side edge, and a closed bottom edge to form an outer bag. A second inner bag may be inserted within the first bag to form a “bag-in-a-bag” type configuration in which the inner bag is bonded to the outer bag along side seals by a continuous process. The bags may also be bonded together along the hem and the draw tape. When the side seals of the inner bag and the outer bag are sealed together by a continuous rather than a reciprocating process, the inventors have surprisingly found that such seals require carefully controlled process conditions to prevent inadequate seals. | 07-25-2013 |
20130209711 | RIBBED FILM STRUCTURES WITH VOIDING AGENT CREATED VISUAL CHARACTERISTICS - In one example embodiment, a film includes a coextruded structure having both an extruded ribbed skin layer that includes a plurality of ribs, and a core layer. The ribs are spaced apart by a web that is integral with the ribs. The film also includes a voiding agent in the ribs of the skin layer. | 08-15-2013 |
20130209712 | RIBBED FILM STRUCTURES WITH PIGMENT CREATED VISUAL CHARACTERISTICS - In one example embodiment, a film includes a coextruded structure having both an extruded ribbed skin layer that includes a plurality of ribs, and a core layer. The ribs are spaced apart by a web that is integral with the ribs. The film also includes a coloring agent that is substantially more apparent in the ribs than in the web, such that a contrast in color and/or color intensity between the ribs and the web is visible. | 08-15-2013 |
20130243982 | DISCONTINUOUSLY LAMINATED FILM STRUCTURES WITH IMPROVED VISUAL CHARACTERISTICS - In one example embodiment, a laminated film includes an extruded ribbed first film portion that includes multiple ribs, where consecutive ribs are separated by webs that are integral with the ribs. The laminated film also includes an un-ribbed second film portion, and a region of discontinuous lamination between the first film portion and the second film portion. The region of discontinuous lamination includes multiple regions where the first and second film portions are bonded together, and multiple regions where the first and second film portions are not bonded together. | 09-19-2013 |
20130259408 | Incrementally-Stretched Thermoplastic Films With Enhanced Look and Feel and Methods for Making The Same - Methods of increasing the perceived thickness and strength of a thermoplastic film include incrementally stretching thermoplastic films in the machine direction. In one or more implementations, methods of incrementally stretching thermoplastic films include reducing the gauge of the films while increasing a loft of at least a portion of the film. The methods can involve cold stretching the films and imparting rib patterns and alternating peaks and valleys into the film. The linear ribs can have alternating thick and thin gauges. | 10-03-2013 |
20140023829 | Multi-Ply Puckered Films Formed By Discontinuous Lamination of Films Having Different Rebound Ratios - Methods of increasing the loft of a multi-ply thermoplastic film include stretching thermoplastic films with different rebound ratios, non-continuously laminating the films together, and releasing the films to create puckers in one or more of the films. The puckers can comprise billowing of one of the films. The non-continuous laminated areas can maintain the puckers in the films. The puckers can increase the loft of the film, improve the feel of the film, and/or modify the look of the film. The loft of such multi-ply puckered thermoplastics films vary independent of the basis weight of the films. Thus, multi-ply puckered thermoplastics films with increased loft of one or more implementations can look and feel thicker while using reduced amounts of thermoplastic material. | 01-23-2014 |
20140367885 | INCREMENTALLY STRETCHED FILMS WITH INCREASED TEAR RESISTANCE AND METHODS FOR MAKING THE SAME - Methods of incrementally stretching thermoplastic films in the machine direction include elongating the films in the machine direction without reducing the films' machine-direction tear resistance. In one or more implementations, methods of incrementally stretching thermoplastic films include reducing the gauge of the films without reducing the films' machine-direction tear resistance. The methods can involve cold stretching the films and imparting transverse-direction extending linear rib pattern into the film. The linear ribs can have alternating thick and thin gauges. Incrementally stretched thermoplastic films can have a machine-direction tear resistance that is approximately equal to or greater than the machine-direction tear resistance of the film prior to stretching. | 12-18-2014 |
20150321461 | INCREMENTALLY-STRETCHED ADHESIVELY-LAMINATED FILMS AND METHODS FOR MAKING THE SAME - Incrementally-stretched adhesively-laminated films include two or more film layers adhesively bonded together. At least one of the two or more film layers is incrementally stretched. The incrementally-stretched adhesively-laminated films can have maintained or increased strength parameters despite a reduction in gauge. The incrementally-stretched adhesively-laminated films can be formed into bags for use as trash can liners or food storage. Methods of forming incrementally-stretched adhesively-laminated films include cold stretching one or more of the first and second film layers and adhesively bonding the film layers together. | 11-12-2015 |
Patent application number | Description | Published |
20090214141 | Closure Device Providing Visual Confirmation of Occlusion - A closure device providing a visual confirmation of occlusion. The closure device includes a first and a second interlocking fastening strips which are arranged to be interlocked over a predetermined length, at least one of the fastening strips having a surface alteration providing visual confirmation of occlusion of the closure device. The surface alteration may be a slit which opens or closes upon occlusion of said closure device. In one embodiment, the surface alteration may extend into a coextruded portion. The color of the coextruded portion is exposed when the surface alteration is open and hidden when the surface alteration is substantially closed. In another embodiment, the surface alteration may extend into an edge glow material which produces an edge glow effect when the surface alteration is open. In a third embodiment, the surface alteration may extend through an opaque side wall to expose the color of the base. The surface alteration may be located on the mating side, the non-mating side or both sides of one or both of the bases. In addition, the surface alteration may be located on the closure element. The opening or closing of the surface alteration may be achieved by a deformation in the closure device upon occlusion of the closure device. The deformation may be an inward deformation or an outward deformation on the fastening strip. This deformation may also allow a user to tactually confirm that the closure device has been occluded, even after the closure device has been occluded. The deformation may be on one or both of the fastening strips. In addition, the fastening strip may include multiple deformations. | 08-27-2009 |
20130192712 | FLEXIBLE STORAGE BAG - The flexible bag includes overlaying first and second sidewalls that provide an internal volume that can be accessed via an opening. To evacuate air from the internal volume after the open top edge has been closed, the bag includes a one-way valve element attached to the first sidewall. The bag is configured to prevent objects from clogging the valve element during evacuation. In one embodiment, the bag may include a plurality of ridges formed along the inner surface of at least one sidewall that can maintain separation of the sidewalls and contents from the valve element. In another aspect, the valve element is beneficially located at a top corner of the bag where the valve element is spaced apart from those locations in the bag where contents are likely to collect. | 08-01-2013 |
20130202229 | MULTI-LAYERED THERMOPLASTIC BAG WITH REINFORCED SEALS AND METHODS OF MAKING THE SAME - One or more implementations of a multi-layered bag with reinforced seals include an outer layer or bag and an inner layer or bag positioned within the outer layer or bag. The multi-layered bag further includes a draw tape positioned near the opening of the multi-layered bag. The draw tape can allow a user to at least partially close the multi-layered bag by drawing the layers of the bag together. The multi-layered bag further includes one or more tape seals that bond the draw tape to layers of the bag. The tape seals can be reinforced and include at least seven plies bonded together. One or more implementations further include methods of forming multi-layered bags with reinforced seals. | 08-08-2013 |
20130202853 | INCREMENTALLY STRETCHED FILMS WITH TAILORED PROPERTIES AND METHODS FOR MAKING THE SAME - Methods of enhancing one or more physical properties of a thermoplastic film include incrementally stretching thermoplastic films in the machine direction and/or transverse direction. In one or more implementations, methods of incrementally stretching thermoplastic films include reducing the gauge of the films while maintaining or increasing a ratio of the machine direction to transverse direction resistance to tear. The methods can involve cold stretching the films and imparting rib patterns into the film. The linear ribs can have alternating thick and thin gauges. | 08-08-2013 |
20140174631 | INCREMENTALLY-STRETCHED THERMOPLASTIC FILMS WITH ENHANCED LOOK AND FEEL AND METHODS FOR MAKING THE SAME - Methods of increasing the perceived thickness and strength of a thermoplastic film include incrementally stretching thermoplastic films in the machine direction. In one or more implementations, methods of incrementally stretching thermoplastic films include reducing the gauge of the films while increasing a loft of at least a portion of the film. The methods can involve cold stretching the films and imparting rib patterns and alternating peaks and valleys into the film. The linear ribs can have alternating thick and thin gauges. | 06-26-2014 |
20140178649 | INCREMENTALLY-STRETCHED THERMOPLASTIC FILMS WITH ENHANCED LOOK AND FEEL AND METHODS FOR MAKING THE SAME - Methods of increasing the perceived thickness and strength of a thermoplastic film include incrementally stretching thermoplastic films in the machine direction. In one or more implementations, methods of incrementally stretching thermoplastic films include reducing the gauge of the films while increasing a loft of at least a portion of the film. The methods can involve cold stretching the films and imparting rib patterns and alternating peaks and valleys into the film. The linear ribs can have alternating thick and thin gauges. | 06-26-2014 |
20140334749 | MELT-BONDED THERMOPLASTIC BAGS WITH TAILORED BOND STRENGTH AND METHODS OF MAKING THE SAME - One or more implementations of a multi-layered bag with reinforced seals include an outer layer or bag and an inner layer or bag positioned within the outer layer or bag. The multi-layered bag further includes a draw tape positioned near the opening of the multi-layered bag. The draw tape can allow a user to at least partially close the multi-layered bag by drawing the layers of the bag together. The multi-layered bag further includes one or more tape seals that bond the draw tape to layers of the bag. The tape seals can be reinforced and include at least seven plies bonded together. One or more implementations further include methods of forming multi-layered bags with reinforced seals. | 11-13-2014 |
20140355911 | STRETCHED FILMS WITH MAINTAINED TEAR RESISTANCE AND METHODS FOR MAKING THE SAME - Methods of stretching thermoplastic films in the machine direction include elongating the films in the machine direction without significantly reducing the films' machine-direction tear resistance. In one or more implementations, methods of stretching thermoplastic films include reducing the gauge of the films while substantially maintaining the films' machine-direction tear resistance. The methods can involve uniformly cold stretching the films by stretching the films to a draw of about one hundred and eighty percent, or less, of the films' original length. | 12-04-2014 |
20140357826 | STRETCHED FILMS WITH MAINTAINED TEAR RESISTANCE AND METHODS FOR MAKING THE SAME - Methods of stretching thermoplastic films in the machine direction include elongating the films in the machine direction without significantly reducing the films' machine-direction tear resistance. In one or more implementations, methods of stretching thermoplastic films include reducing the gauge of the films while substantially maintaining the films' machine-direction tear resistance. The methods can involve uniformly cold stretching the films by stretching the films to a draw of about one hundred and eighty percent, or less, of the films' original length. | 12-04-2014 |
20140378286 | METHODS OF MAKING MULTI-LAYERED BAGS WITH ENHANCED PROPERTIES - Methods for creating multi-layered incrementally-stretched and incrementally-laminated bags with increased or maintained strength are described herein. An increased level of strength is achieved by bonding adjacent layers of a multi-layer film together in a manner that the bond strength of the laminated layers is less than a strength of a weakest tear resistance of the individual first and second film layers. The inventors have surprisingly found that such a configuration of light bonding provides increased and unexpected strength properties to the multi-layer film as compared to a monolayer film of equal thickness or a multi-layer film in which the plurality of layers are tightly bonded together. | 12-25-2014 |
20150030266 | MULTI-LAYERED THERMOPLASTIC FILMS AND BAGS WITH ENHANCED LIGHT TRANSMITTANCE AND METHODS FOR MAKING THE SAME - Implementations described herein include films with maintained or decreased light transmittance despite a reduction in gauge. In particular, one or more implementations include a multi-layer film with each layer having differing opacity agents. The combination of the two different opacity agents in two different layers can have a synergistic effect that provide decreased light transmittance. Indeed, in one or more embodiments a multi-layer film with differing opacity agents in each layer has a decreased light transmittance despite a reduction in gauge and opacity agents. | 01-29-2015 |
20150036951 | NON-CONTINUOUSLY LAMINATED MULTI-LAYERED BAGS - Multi-layer bags may be formed to include first and second sidewalls joined along a first side edge, an opposite second side edge, and a closed bottom edge. The first and second layers may be non-continuously laminated together to include bonded regions in which the layers are bonded and unbonded regions in which the layers are not bonded. Such a bag may be described as a “bag-in-a-bag” type configuration in which the inner bag is non-continuously bonded to the outer bag. The inventors have surprisingly found that such configurations of non-continuous bonding provides increased and unexpected strength properties to the multi-layer films and bags. | 02-05-2015 |
20150071574 | MULTI-LAYERED BAGS WITH DISCRETE NON-CONTINUOUS LAMINATION - Multi-layer bags may be formed to include first and second sidewalls joined along a first side edge, an opposite second side edge, and a closed bottom edge. The first and second layers may be non-continuously laminated together in discrete sections to include bonded regions in which the layers are bonded and unbonded regions in which the layers are not bonded. Such a bag may be described as a “bag-in-a-bag” type configuration in which the inner bag is non-continuously bonded to the outer bag. The inventors have surprisingly found that such configurations of non-continuous bonding provides increased and unexpected strength properties to the multi-layer films and bags. | 03-12-2015 |
20150298862 | MULTI-LAYERED BAGS WITH SHORTENED INNER LAYER - Multi-layered bags include an outer layer or bag and an inner layer or bag that is shorter than the outer layer or bag. The shortened inner layer or bag can stretch or expand to the outer layer or bag when loaded with objects or otherwise strained. Such multi-layered bags can allow for a reduction in thermoplastic material without compromising the strength of the multi-layered bag. In various implementations, the inner layer or bag may be non-continuously laminated, continuously laminated, or joined only along one or more edges to the outer layer or bag. Implementations including non-continuous bonds securing the inner layer or bag to the outer layer or bag can provide additional strength to the bag. Methods of forming multi-layered bags with a shortened inner layer including inserting an inner layer within an outer layer and then joining the layers to form a bag. | 10-22-2015 |
20160039169 | MULTI-LAYERED LIGHTLY-LAMINATED FILMS AND METHODS OF MAKING THE SAME - Apparatus and methods for creating multi-layered lightly-laminated provide films with increased or maintained strength. An increased level of strength is achieved by bonding adjacent layers of the multi-layer film together in a manner that the bond strength of the laminated layers is less than a strength of a weakest tear resistance of the individual first and second film layers. The inventors have surprisingly found that such a configuration of light bonding provides increased and unexpected strength properties to the multi-layer film as compared to a monolayer film of equal thickness or a multi-layer film in which the plurality of layers are tightly bonded together. | 02-11-2016 |