The present subject matter provides a shrink film free of silicon-containing material, fluorine-containing material, and solvent-formed seams. The shrink film utilizes a water soluble layer covering an adhesive layer. The water soluble layer is in dry form and non-tacky, allowing processing of the shrink film subsequent to adhesive application to the shrink film. When the water soluble layer is dissolved, the adhesive layer is exposed and is capable of forming a permanent bond. The adhesive can be used to form a seam in the film and/or can be used to form a bond between the film and a substrate. The water soluble layer facilitates removal of an optional release liner from the adhesive. A substrate with the shrink film attached thereto and a related method of attaching a heat shrinkable film to a substrate are also disclosed.

The present subject matter provides a shrink film free of silicon-containing material, fluorine-containing material, and solvent-formed seams. The shrink film utilizes a water soluble layer covering an adhesive layer. The water soluble layer is in dry form and non-tacky, allowing processing of the shrink film subsequent to adhesive application to the shrink film. When the water soluble layer is dissolved, the adhesive layer is exposed and is capable of forming a permanent bond. The adhesive can be used to form a seam in the film and/or can be used to form a bond between the film and a substrate. The water soluble layer facilitates removal of an optional release liner from the adhesive. A substrate with the shrink film attached thereto and a related method of attaching a heat shrinkable film to a substrate are also disclosed.

A method may include placing a bottom facer on a conveyor, placing a core layer on the bottom facer placing a top facer on the core layer, and pressing the bottom facer, the core layer, and the top facer in a hot press to form a panel, wherein the hot press causes the bottom facer to shrink relative to the top facer, introducing a warp into the panel such that, when installed, the warp compensates for an installation warp and the panel is flat upon installation.

A method may include placing a bottom facer on a conveyor, placing a core layer on the bottom facer placing a top facer on the core layer, and pressing the bottom facer, the core layer, and the top facer in a hot press to form a panel, wherein the hot press causes the bottom facer to shrink relative to the top facer, introducing a warp into the panel such that, when installed, the warp compensates for an installation warp and the panel is flat upon installation.

Method for manufacturing a composite work piece for a drug delivery device, comprising the steps: Providing a first work piece part 1 and a second work piece part 2, arranging both work piece parts 1, 2 with respect to each other in such a way that both work piece parts 1, 2 are in mechanical contact with one another in a contact area 3, irradiating a surface of the first work piece part 1 with electromagnetic radiation, thereby softening the first work piece part 1 and/or the second work piece part 2 in a region adjacent to the contact area 3, and joining the first work piece part 1 to the second work piece part 2 in the contact area 3 for the composite work piece. Furthermore, a composite work piece for a drug delivery device is provided.

Method for manufacturing a composite work piece for a drug delivery device, comprising the steps: Providing a first work piece part 1 and a second work piece part 2, arranging both work piece parts 1, 2 with respect to each other in such a way that both work piece parts 1, 2 are in mechanical contact with one another in a contact area 3, irradiating a surface of the first work piece part 1 with electromagnetic radiation, thereby softening the first work piece part 1 and/or the second work piece part 2 in a region adjacent to the contact area 3, and joining the first work piece part 1 to the second work piece part 2 in the contact area 3 for the composite work piece. Furthermore, a composite work piece for a drug delivery device is provided.

A method may include placing a bottom facer on a conveyor, placing a core layer on the bottom facer placing a top facer on the core layer, and pressing the bottom facer, the core layer, and the top facer in a hot press to form a panel, wherein the hot press causes the bottom facer to shrink relative to the top facer, introducing a warp into the panel such that, when installed, the warp compensates for an installation warp and the panel is flat upon installation.

A method may include placing a bottom facer on a conveyor, placing a core layer on the bottom facer placing a top facer on the core layer, and pressing the bottom facer, the core layer, and the top facer in a hot press to form a panel, wherein the hot press causes the bottom facer to shrink relative to the top facer, introducing a warp into the panel such that, when installed, the warp compensates for an installation warp and the panel is flat upon installation.

There is provided a method of joining thermoplastic elastomer (TPE) tubes, comprising: abutting an end surface of a first TPE tube against an end surface of a second TPE tube; providing a TPE sleeve around the first and second tubes such that it overlaps the end surfaces; providing a compression member around the sleeve which is configured to apply a radial force around a circumference of the sleeve; and fusing the first and second tubes and the sleeve to one another by applying heat to the sleeve while applying a radial force to the sleeve using the compression member.

There is provided a method of joining thermoplastic elastomer (TPE) tubes, comprising: abutting an end surface of a first TPE tube against an end surface of a second TPE tube; providing a TPE sleeve around the first and second tubes such that it overlaps the end surfaces; providing a compression member around the sleeve which is configured to apply a radial force around a circumference of the sleeve; and fusing the first and second tubes and the sleeve to one another by applying heat to the sleeve while applying a radial force to the sleeve using the compression member.