ADHESIVE AND METHOD OF GLUING MULTILAYER FABRIC-FILM MATERIALS Russian patent published in 2012 - IPC C09J175/06 

FIELD: chemistry.

SUBSTANCE: invention can be used in making soft structures with a large size and complex configuration from multilayer fabric-film materials used in aerostatic technology. The adhesive, which is obtained by dissolving granular Desmocoll-530 or Chisicoll-005 adhesive in acetone in ratio 1:10 at temperature 25-30°C for 6-8 hours, is a homogeneous viscous liquid from colourless to milk-white colour with a mother-of-pearl tint. The low viscosity of the adhesive enables to form a thin, flexible adhesive film having a strong bond with the surface film of the multilayer fabric-film material, which makes it easier to apply the adhesive onto the surface. Hardening time between applying adhesive layers is not more than 5 min and after applying the layer the solvent is not completely removed from the adhesive for 1-3 min. The remaining negligible amount of acetone 'loosens' the surface of the material, which increases adhesion after heating the joint. Gradual 'point' warming up of glued surfaces with a hot roller moving at 3-5 mm/s with pressure 0.2-0.3 MPa, ensures formation a joint whose adhesion strength during delamination is not less than 1.5 N/m.

EFFECT: gluing method is essential in parts of an article which are hard to reach, with large areas of the glued surfaces and length of joints of up to 5-7 m.

3 cl