A method for manufacturing tubular bodies (1) exhibiting an inner circumferential surface (8) and outer circumferential surface (7) for packaging tubes out of a strip-shaped film substrate (2), which exhibits at least one weldable plastic layer (3) or consists of the latter, and which encompasses a first edge face (5) extending in the longitudinal direction of the film substrate (2) or a second edge face (6) spaced apart from the first edge face (5) by the width of the film substrate (2), wherein the first edge face (5) runs at a first angle (α) relative to a first thickness extension direction on a first radially innermost border (9) of the first edge face (5), and the second edge face (6) runs at a second angle (β) relative to a second thickness extension direction on a second radially outermost border of the second edge face (6), and wherein the first and second edge faces (6) are placed opposite each other and joined together during exposure to heat, wherein the first angle (α) and second angle (β) differ in size, in that the selected first angle (α) is smaller than the second angle (β) by an angular difference of between 3° and 70°, and that the edge faces (5, 6) are situated in such a way that an outwardly open longitudinal gap (11) is delimited by the first and second edge faces (5, 6).

A method for manufacturing tubular bodies (1) exhibiting an inner circumferential surface (8) and outer circumferential surface (7) for packaging tubes out of a strip-shaped film substrate (2), which exhibits at least one weldable plastic layer (3) or consists of the latter, and which encompasses a first edge face (5) extending in the longitudinal direction of the film substrate (2) or a second edge face (6) spaced apart from the first edge face (5) by the width of the film substrate (2), wherein the first edge face (5) runs at a first angle (α) relative to a first thickness extension direction on a first radially innermost border (9) of the first edge face (5), and the second edge face (6) runs at a second angle (β) relative to a second thickness extension direction on a second radially outermost border of the second edge face (6), and wherein the first and second edge faces (6) are placed opposite each other and joined together during exposure to heat, wherein the first angle (α) and second angle (β) differ in size, in that the selected first angle (α) is smaller than the second angle (β) by an angular difference of between 3° and 70°, and that the edge faces (5, 6) are situated in such a way that an outwardly open longitudinal gap (11) is delimited by the first and second edge faces (5, 6).

The present disclosure relates to liners and methods of making liners. The liners may be suitable for use with tanks and other storage/containment vessels, such as process tanks, immersion tanks, indoor or outdoor containment pits, gravity feed conduits (e.g., concrete trench, canal, or drain, etc.) for transferring or conveying liquid, grain storage tanks or containers (e.g., dielectric or electrically non-conductive liners for grain storage, etc.), etc.

A duct that, in cross section, has one or more rounded portions is disclosed together with a method and a machine for producing it. The duct can be made from rigid foam panels with a facing on at east one side of the panels. A crimping element is used to form several substantially parallel indentations or crimps on a faced side of a panel, without breaching the facing, so that the crimped panel can be manipulated to form a section of duct with the crimps extending longitudinally. Depending on the number of crimps, the duct will appear more or less round in cross section although the crimped foam panels can be manipulated to have cross sections of different shapes such as oval. Adjacent duct sections may be joined, for example, with tape or bands, several of which are described.

A panel (20) having opposite surfaces (22, 24), and including sheets (42, 43) and elongated cores or voids (40). The cores/voids extend parallel along a first direction (X), are arranged mutually adjacent in a second direction (Y), and include an outermost core/void (40a) along a panel edge (26). Each sheet includes a medial portion (44, 45) between two adjacent cores/voids, a first lateral portion (46, 47) folded away from the medial portion over one adjacent core/void, and towards the second direction along the first surface, and a second lateral portion (48, 49) folded away from the medial portion over another adjacent core/void, and towards a negative second direction (−Y) along the second surface. The sheets include an enveloping sheet (43), the first lateral portion (47) thereof extending into a folded lateral region (50, 52) that at the panel edge is folded around the outermost core/void, and extends in the negative second direction back towards the second surface.

A panel (20) having opposite surfaces (22, 24), and including sheets (42, 43) and elongated cores or voids (40). The cores/voids extend parallel along a first direction (X), are arranged mutually adjacent in a second direction (Y), and include an outermost core/void (40a) along a panel edge (26). Each sheet includes a medial portion (44, 45) between two adjacent cores/voids, a first lateral portion (46, 47) folded away from the medial portion over one adjacent core/void, and towards the second direction along the first surface, and a second lateral portion (48, 49) folded away from the medial portion over another adjacent core/void, and towards a negative second direction (−Y) along the second surface. The sheets include an enveloping sheet (43), the first lateral portion (47) thereof extending into a folded lateral region (50, 52) that at the panel edge is folded around the outermost core/void, and extends in the negative second direction back towards the second surface.

The disclosure relates to assemblies of thin-walled tubes and mandrels for use in thin wall catheter liners. For example, an assembly is provided that includes a thin-walled PTFE tube comprising walls with a thickness of less than 0.004 inches, positioned over a filled mandrel comprising PTFE with one or more fillers incorporated therein. The disclosure further provides, independently, thin-walled tubes and filled mandrels, as well as methods of making and using such components.

The disclosure relates to assemblies of thin-walled tubes and mandrels for use in thin wall catheter liners. For example, an assembly is provided that includes a thin-walled PTFE tube comprising walls with a thickness of less than 0.004 inches, positioned over a filled mandrel comprising PTFE with one or more fillers incorporated therein. The disclosure further provides, independently, thin-walled tubes and filled mandrels, as well as methods of making and using such components.

A profiling device, a profiling method, a bonding system, a bonding method, and a display device are provided. The profiling device includes a profiling jig. The profiling jig includes an attaching surface. The attaching surface is switchable between a planar state and a profiling state, and the attaching surface is a planar surface in the case that the attaching surface is in the planar state, and the attaching surface is a profiling surface in the case that the attaching surface is in the profiling state.

A method for manufacturing a secondary battery includes a forming step of pressing a pouch sheet by using a press die so that left and right accommodation grooves, which are bilaterally symmetrical to each other and are opened upward, and a bridge connecting the left and right accommodation grooves to each other are formed in the pouch sheet, wherein the bridge protrudes upward with respect to bottom surfaces of the left and right accommodation grooves, and a curved portion having a rounded shape is formed on an upper end of the bridge, a seating step of seating an electrode assembly in one of the left and right accommodation grooves, and a folding step of folding the pouch sheet so that the left and right accommodation grooves face each other.