A compound heat seal structure that, when heat-sealing a bag with a stacked area level difference, reliably seals even a section having different level and that can be easily opened. A compound heat seal structure is provided as a peelable seal in a band shape on a bag and a linear heat seal is added as a peelable seal in that band-shaped peelable heat seal in the longitudinal direction thereof.

A method and an apparatus for forming packages including plasters enclosed between two opposite flexible sheets having their edges joined by means of a thermally-activated adhesive.

A method of producing vehicles includes coating a vehicle body with paint, drying the paint, mounting attachment parts on load-bearing components of the vehicle body that has been coated with the paint that has been dried, and applying an adhesive film including an adhesive layer to a surface of the vehicle body that has been coated with the paint that has been dried or at least one attachment part mounted thereon, wherein, to apply the adhesive film, the adhesive film is positioned between the surface and an elastic membrane with an automated system, and the elastic membrane is transformed in selected regions into a curved state with a convex and a concave side and is brought into contact with the surface with the convex side in front such that the adhesive layer of the adhesive film is pressed onto the surface by the membrane over the entire surface area.