Inside corner profile for drywall installation

Abstract

An inside corner profile for providing a low-maintenance expansion joint in a space that is at least partially designed with flat structural elements, the cross section of the inside corner profile having a long leg on the back and a short leg on the front, as well as a web that connects the short leg and the long leg, the web being extended beyond the attachment point of the short leg and the web extension having a shadow gap on the back side of its end portion is disclosed.Also disclosed is a use of the inside corner profile in drywall construction using gypsum plaster board panels.

1 . An inside corner profile for providing a low-maintenance expansion joint in a space at least partially designed with flat structural elements, the cross section of the inside corner profile having:
 a long leg on the back; and   a short leg on the front; as well as   a web that connects the short leg and the long leg;   the web is extended beyond the attachment point of the short leg; and   the web extension has a shadow gap on the back side of its end portion.   
     
     
         2 . The inside corner profile according to  claim 1 , wherein the web extension has at least one bevel on the back side of its end portion to form the shadow gap. 
     
     
         3 . The inside corner profile according to  claim 1 , wherein the web extension has at least one rabbet on the back of its end portion to form the shadow gap. 
     
     
         4 . The inside corner profile according to  claim 1 , wherein the web extension on the back of its end portion to form the shadow gap has:
 at least one bevel; and   at least one rabbet.   
     
     
         5 . The inside corner profile according to  claim 1 , wherein the front corner region formed by the front side of the short leg and the top side of the web extension has a triangular cross section. 
     
     
         6 . The inside corner profile according to  claim 1 , wherein the front corner region formed by the front side of the short leg and the top side of the web extension has a concave shape on the outside in cross section. 
     
     
         7 . The inside corner profile according to  claim 1 , wherein the front corner region formed by the front side of the short leg and the top side of the web extension has a convex shape on the outside in cross section. 
     
     
         8 . The inside corner profile according to  claim 1 , wherein the short leg has a second shadow gap, on the back side of its end portion which is designed as a bevel and/or as a rabbet. 
     
     
         9 . The inside corner profile according to  claim 1 , wherein the surface of the shadow gap has a coating which reduces the adhesion of a paint to the inside corner profile. 
     
     
         10 . The inside corner profile according to  claim 1 , wherein the web has a recess and/or a notch running along the longitudinal axis of the profile on the outside on the portion located between the long leg and the short leg. 
     
     
         11 . The inside corner profile according to  claim 1 , wherein the length of the web is such that the inside length of the web corresponds to the thickness of the flat structural elements used or is slightly less than the thickness of the flat structural elements used, so that the inside corner profile rests against the edge region of a flat structural element with a slight clamping tension after it has been snapped on. 
     
     
         12 . The inside corner profile according to  claim 1 , wherein an adhesive strip having a protective strip or an adhesive tape with a foam intermediate layer is prefixed in the recess. 
     
     
         13 . The inside corner profile according to  claim 1 , wherein the long web has a plurality of needle-like elevations and/or a plurality of pointed elevations having a barbed hook spaced apart from one another on the inside. 
     
     
         14 . The inside corner profile according to  claim 1 , wherein the inside corner profile is made of a plastic or aluminum. 
     
     
         15 . A use of an inside corner profile according to  claim 1  for construction of a drywall construction wall.