摘要:
Apparatus for inserting a folded film into another folded film include combining the films without unfolding or folding either of the folded films. In particular, one or more implementations include a spreader bar configured to separate layers of a first folded film. Additionally, the apparatus can include one or more orientation rollers configured to direct a second film between the separated layers of the first folded film. Furthermore, the apparatus can include a direction change bar configured to change the direction a travel of the second film while the second film is positioned between the layers of the first folded film.
摘要:
A plurality of discrete packages (100) are manufactured from an indefinite length of gusseted packaging material (1). Each package (100) has an insert (9) inserted through an incision (7) in the packaging (1) which in use maintains a desired footprint of the package. Gaps (17) in welds (15) joining the bottom of the insert (9) to the packaging material (1) allow air to vent from between the insert (9) and the packaging material (1). Flaps (23) toward the rear of each package (100) join a leading package (100) to a following package (100a) by means of longitudinal welds (21) which allow gaps (22) for air to vent during the roll-up process.
摘要:
Methods for inserting a folded film into another folded film include combining the films without unfolding or folding either of the folded films. In particular, one or more implementations of a method of combining folded films involves directing a first folded film in a first direction and separating first and second halves of the first folded film. The method also involves directing a second folded film in a second direction generally perpendicular to the first direction. Additionally, the method involves inserting the second folded film between the first and second halves of the first folded film. Furthermore, the method involves redirecting the second folded film into the first direction while between the first and second halves of the first folded film.
摘要:
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.