An internal tensioning structure for use in an inflatable product fulfills the basic function of maintaining two adjacent inflatable surfaces in a desired geometric arrangement when the inflatable product is pressurized. The tensioning structure is formed by connecting a pair of plastic strips sheets via spaced-apart strands, such as strings or wires. When pulled taut, the strands provide a high tensile strength between the two opposed plastic strips. At the same time, the plastic strips facilitate a strong, long-lasting weld between the tensioning structure and the inflatable product.

Air- or gas-holding fabrics and improvements to welded seam tapes used to join multiple fabric panels and/or to join accessories to one or more fabric panels. Specifically disclosed is a joining system and method for securing air- or gas-holding panels to one another and/or to joining accessories to one or more panels without causing damage due to overheating the seam area. This disclosure has been found particularly useful with improved lightweight fabrics that would otherwise be more susceptible to damage during welding processes. The disclosed seam tapes and accessory fabrics find particular use in connection with inflatable devices, but may be used in other applications. This disclosure relates to a dedicated seam tape or dedicated accessory fabric that (a) utilizes specialized coatings with a lower melt temperature compared to coatings that are used on inflatable fabric material and/or (b) is manufactured from material that has not been treated to have substantial reflective properties.

The present disclosure is related to an inflation and sealing device that can include low or non-stick surfaces and bump-off elements to prevent sticking to a holding region proximal to the exit from the inflation and sealing device.

The present disclosure is directed to a web inflation and sealing apparatus. The device may include a support member for holding a supply of web material and sealing apparatus may include an inflation and a sealing assembly operable to inflate the web material with a fluid by directing the fluid between superimposed plies of the web material and to seal the plies together to seal the fluid therein. The apparatus may include a guide member positioned between the support member and the inflation and sealing assembly such that when the web material is routed from the supply toward the inflation and sealing assembly via the guide member the web material follows a curved longitudinal path. The guide member may define a web-supporting surface extending transversely to the longitudinal path with an elevated profile portion defining at least a portion of the web-supporting surface.

A protective packaging formation device is disclosed herein. The device includes an inflation assembly that directs fluid between first and second overlapping plies of a web material. The device also includes a sealing mechanism. The sealing mechanism includes a heating zone and a cooling zone. The sealing mechanism also includes a heating element that extends along both the heating zone and the cooling zone, with the heating element having a first profile in the heating zone and a second profile in the cooling zone.

A protective packaging formation device is disclosed herein. The protective packaging formation device can include an inflation assembly having a fluid conduit that directs fluid between first and second overlapping plies of a web material and a sealing mechanism. The sealing mechanism can include a heating zone of the sealing mechanism operable to heat the plies to create a longitudinal heat seal that seals the first and second plies together as the web is driven over the heating zone in a downstream direction. The sealing mechanism can also include a pinch zone that overlaps longitudinally with the heating zone. The pinch zone defined by an isolation element that applies a first pressure to the web material along a first region. The pinch zone is also defined by a support structure and a compression element that applies a second pressure to the web material there-between along a second region transverse to the first region.

The present disclosure is directed to a compression belt for inflation and sealing devices. The device may include an inflation assembly, a heating assembly, and a drive mechanism. The inflation assembly may direct fluid between first and second overlapping plies of a flexible web material to inflate chambers between the plies. The heating assembly may be operable to heat the first and second plies of the web material to create a longitudinal heat seal that seals the fluid in the inflated chambers. The drive mechanism may drive the web material in a downstream direction. The drive mechanism may tension the web material against the heating assembly. The drive mechanism may include a first belt including a high grip material on a surface that contacts the web material to grip the web material during heating by the heating assembly.

A nozzle is usable to inflate a film having two sides that form a common channel and inflatable channels. The inflatable channels are in fluid communication with the common channel. The nozzle includes a proximal end configured to separate the two sides of the film to open the common channel as the film moves in a longitudinal direction. The nozzle includes a distal end configured to permit the two sides of the film to converge as the film moves in the longitudinal direction. The nozzle includes a slot configured to direct gas transversely into the common channel to inflate the inflatable channels as the film moves in the longitudinal direction.

A protective packaging formation device is disclosed herein. The device includes an inflation assembly that directs fluid between first and second overlapping plies of a web material. The device also includes a sealing mechanism that includes an arcuate web-support surface. The web-support surface includes a heater that defines a heating zone that is operable to heat the plies to create a longitudinal heat seal that seals the first and second plies together as the web is driven over the heating zone in a downstream direction. The web-support surface also includes a cooling zone disposed downstream of the heating zone operable to allow the heated plies to cool at the longitudinal heat seal as the web is driven over the heating zone in a downstream direction, such that the cooled longitudinal heat seal retains the fluid between the plies.

A methods of executing start, run, and stop sequences on a machine for converting a web of preformed pouches into inflated dunnage units. The pouches are defined by transverse seals extending from a remote edge to within a predetermined distance from an inflation edge.