Patent EP-2692959-A1 (EP)
Inventor: HOFFMANN HANS J
IPC: E06B1/62
Filed: 2012-07-29
Abstract: The film tape comprises a function membrane (1) formed by a non-perforated film, a self-adhesive layer (2) applied on a bottom or over the entire surface of the membrane, and removable cover sheets (3) that are laterally spaced apart from each other. The self-adhesive layer is provided with a peelable cover film. The cover sheets have different widths, and extend in a longitudinal direction of self-adhesive strip. The function membrane: is connectable to and applied on a first component such as a window or door frame via a first adhesive region of the self-adhesive layer. The film tape comprises a function membrane (1) formed by a non-perforated film, a self-adhesive layer (2) applied on a bottom or over the entire surface of the membrane, and removable cover sheets (3) that are laterally spaced apart from each other. The self-adhesive layer is provided with a peelable cover film. The cover sheets have different widths, and extend in a longitudinal direction of self-adhesive strip. The function membrane: is connectable to and applied on a first component such as a window or door frame via a first adhesive region of the self-adhesive layer or a wider side of the self-adhesive layer extending in the longitudinal direction and connectable to and applied on walls via a second adhesive region of the self-adhesive layer or a narrower side of the self-adhesive layer extending in the longitudinal direction; is formed of polyethylene, polypropylene, polyamide, polyurethane, polyester, polyethylene or an ionomer; and has a water vapor diffusion coefficient that is changed depending on surrounding humidity by a polymer film such as a moisture-variable polymer film. The first adhesive region or the narrower side of the self-adhesive layer is arranged in a region of a longitudinal side of the functional membrane, and the second adhesive region or the wider side of the self-adhesive layer is arranged in a region of other longitudinal side of the functional membrane. The moisture-variable polymer film is formed such that the water vapor diffusion coefficient and the diffusion-equivalent value are reduced while increasing relative humidity. A nonwoven layer (4) such as a hot melt adhesive (5) is applied over the entire surface or on a top of the functional membrane and applied on the bottom of the functional membrane and between the functional membrane and the self-adhesive layer. The self-adhesive layer or strip is formed so that a bonding of the functional membrane is formed on the walls made of concrete, stone, plastic, wood or metal. The film tape is positively extensible tape such that the film tape in the transverse direction with less force is stretchable as in the longitudinal direction and such the film tape in the transverse direction is more stretchable as in the longitudinal direction, and a has positive elongation of greater than 5%. The nonwoven layer extends in the longitudinal direction of self-adhesive layer so that the film tape is applied over the component. The self-adhesive layer or strip comprises an acrylate adhesive with coverage of 220-250 g/m 2> applied on the bottom of the functional membrane and of 110-140 g/m 2> applied on the top of the functional membrane. The self-adhesive layer and/or self-adhesive strip has a positive strain limiting scrim liner or non-woven pad formed on the top of the functional membrane or a grid fabric liner or non-woven pad formed on the bottom of the functional membrane. The cover sheet comprises perforation lines extending in the longitudinal direction such that the perforation lines are separated from each other, and separately removed from the self-adhesive layer. A cover portion is arranged on the first adhesive portion.