During the manufacturing process the exterior surface of one or both of the sheets of plastic film which form the bags is treated with low temperature corona discharge plasma to raise the level of surface charge magnitude to at least 43 Dyne to increase the adhesion force between the bags. A recess is formed in each of the bags to further increase the adhesion. The increased adhesion causes the mouth of one bag to automatically open as the adjacent bag is removed from the rack. The recess is formed at the same time openings are created in the bags to accept the support rods of a dispensing rack. The bags can have simple edge sides or side gussets and may be provided in a package including a pouch which receives and supports the lower portions of the bags.

Punched and incised portions can be formed properly, in which it is not necessary to replace an anvil depending on a type of a sheet material. A punching unit 51 comprises: a punching blade 50 for punching a first panel material 11, a second panel material 12, an open tape and a mounting base portion so as to form a punching portion; a incising portion 51 for incising the second panel material 12 and the mounting base portion disposed on the open tape so as to form a incising portion; and an adjusting portion 54 for adjusting a first gap 56 in a punching direction 5Z between edges 50A and 51A of the punching and incising blades 50 and 51.

An automatic packaging bag production device is provided. The automatic packaging bag production device includes an easy-tear line forming mechanism, a sealing and cutting mechanism, a tray, and a traction mechanism, where the easy-tear line forming mechanism includes a first passage and is configured to form an easy-tear line on a belt-shaped material passing through the first passage; the sealing and cutting mechanism includes a second base plate, and a cutting assembly and a sealing assembly arranged on the second base plate; the cutting assembly includes an upper cutter and a lower cutter that are movable close to or away from each other and a second passage is formed between the upper cutter and the lower cutter; the sealing assembly includes an upper sealer and a lower sealer, and a third passage is formed between the upper sealer and the lower sealer.

A thermoplastic bag includes duplicative seals. In particular, in one or more implementations, a thermoplastic bag includes a first seal and at least a second seal reinforcing the same area of the thermoplastic bag. For instance, in one or more implementations, the thermoplastic bag includes multiple seals along each side edge or along the hem. If one seal fails, the other seal(s) can remain in place to prevent leaks. Thus, the duplicative seals of the thermoplastic bag can provide reinforced strength and desired aesthetics.

A controller for a pouch-making machine for manufacturing a pouch while feeding a pair of film materials each provided with a reference mark that indicates a reference position for layering the film materials together, includes a driven roller shift unit for independently shifting each shaft of a pair of driven rollers that rotate being driven by the pair of film materials being fed and a control unit for controlling the driven roller shift unit based on a result of an image-shooting unit shooting images of the reference marks, so that positions of the reference marks provided on the pair of film materials coincide.

A thermoplastic bag includes duplicative seals. In particular, in one or more implementations, a thermoplastic bag includes a first seal and at least a second seal reinforcing the same area of the thermoplastic bag. For instance, in one or more implementations, the thermoplastic bag includes multiple seals along each side edge or along the hem. If one seal fails, the other seal(s) can remain in place to prevent leaks. Thus, the duplicative seals of the thermoplastic bag can provide reinforced strength and desired aesthetics.

Thermoplastic bags with phased deformation patterns are described. In particular, one or more implementations comprise thermoplastic bags with ring rolling, SELFing, or other deformation patterns phased or aligned relative to the sides of the bags. The phased deformation patterns can allow for reducing or eliminating deformation patterns in areas of the thermoplastic bag in which side seals or other seals are formed. Additionally or alternatively, the phased deformation patterns can provide for zones that provide differing properties (e.g., functional or aesthetic). Such zones can vary aligned along a width of the thermoplastic bag and optionally also vary along a height of the thermoplastic bag. The differing zones can provide the thermoplastic bags with phased deformations that provide leak prevention, liquid containment, and other benefits.

A tab system for a folder (10a), and a method of making same is disclosed. The tab is enlarged to carry more information/indicia. The visual indicia space (16a), i.e. the viewable space on the front (32a, 36a) of the folder which allows viewing of the enlarged tab is achieve without violating the overall size restrictions (40a) of the file folder. Instead, the front of the folder adjacent to the tab on the back panel, is cut away (32a,34a) to expose a greater portion of the back panel (14a) and allow an increase in visual indicia space. The remaining portion of the front panel, not adjacent to the tab may also be cut away (34a) to allow other enlarged tab files, with offset tabs, (22d, 21a) to be viewable behind the present file.

A spout is mounted on a plastic film being longitudinally and intermittently fed. The plastic film is punched by a punch blade to form an aperture. A carriage is moved for a distance corresponding to a space between the punch blade and a seal head and between a punch receiver and a seal receiver. The spout is inserted into the aperture. The spout and the plastic film are heat sealed with each other by the seal head.

Articles having mechanically strengthened seams (320) and methods of making the same are provided. An article includes at least one material sheet (311) and a seam (320) formed from an overlap of two portions (310, 314) of the at least one material sheet (311) and an adhesive (312) deposited between the two portions (310, 314) of the at least one material sheet (311) along at least a portion of the overlap, the adhesive (312) sealing the two portions (310, 314) of the at least one material sheet (311), wherein at least one of the two portions (310, 314) of the material sheet (311) comprises a plurality of indents (322) on a surface thereof, such that the adhesive (312) penetrates the material sheet (311) at the indents (322) to provide a mechanical bond between the two portions (310, 314) of the at least one material sheet (311).