Section Bar for Fixtures Constituted by a Section Bar Made of Metallic or Plastic Material, Having Cross-Sectional Section Preferably Opened, Which is Firmly Coupled to a Laminated Plastic Profile Having Structural and Decorative Function

Abstract

The present invention regards an innovative sectional element for door and window frames for the residential and industrial building sector, which is substantially made up of two structural elements rigidly fixed to one another: a first structural element preferably made of aluminium and having a preferably open cross section, and a second structural element made of laminated plastic having preferably also a decorative function.

1 . A sectional element for the production of door frames and window frames for the residential and industrial building sector, characterized in that it is substantially made up of at least two structural elements rigidly fixed to one another: at least one first structural element (P) made of aluminium or steel or PVC or other suitable material and having an open cross section, and at least one second structural element (L) made of laminated plastic or thermosetting material designed to provide, in combination with the first structural element (P), a sectional element for door frames and window frames with closed hollow cross section; said second structural element being provided with a colouring and/or a surface finish having a decorative and aesthetic function. 
   
   
       2 . The sectional element according to  claim 1 , characterized in that said second laminated structural element (L) is set on the side of the sectional element corresponding to the internal face of the door or window frame and/or on the side corresponding to the external face, said second structural element (L) being rigidly fixed to said first structural element (P) having an open cross section, with the result that the sectional element for door and window frames thus obtained has a closed cross section, designed to provide the strength and stiffness required for the purposes that it is to serve. 
   
   
       3 . The sectional element according to  claim 2 , characterized in that said second structural element (L) comprises at least one laminated plastic of an HPL or DPL type or one made by means of thermosetting-plastic sintering, which is designed to be rigidly fixed to the first structural element (P) so as to form a single body therewith. 
   
   
       4 . The sectional element according to  claim 3 , characterized in that the aforesaid laminated plastic (L) is designed to be produced with a practically infinite number of colours and finishes, such as for example the wood effect that is able to reproduce extremely faithfully the vein and colours of any type of wood. 
   
   
       5 . The sectional element according to  claim 3 , characterized in that the sectional element made of aluminium or steel or PVC (P) is designed to be fixed to the laminated plastic (L) by means of simple fitting by pressure of the latter on purposely provided longitudinal tabs (A) made on the sectional element (P) itself. 
   
   
       6 . The sectional element according to  claim 5 , characterized in that said tabs (A) are dove-tailed. 
   
   
       7 . The sectional element according to  claim 5 , characterized in that in the thickness of the laminate (L) longitudinal grooves are provided designed to house said tabs (A). 
   
   
       8 . The sectional element according to  claim 7 , characterized in that the tabs (A) of the sectional element (P) are designed to be inserted longitudinally into the respective grooves of the laminate (L) by applying a bonding agent of a known type (for example, resins or other suitable bonding means for fixing the two materials to one another), designed to improve mutual coupling of the laminate (L) with respect to the aluminium sectional element (P). 
   
   
       9 . The sectional element according to  claim 1 , characterized in that appropriately shaped weatherproofing elements (G) are used in areas corresponding to the striking surfaces and/or for the purposes of providing a finish. 
   
   
       10 . The sectional element according to  claim 2 , characterized in that, in the case where said second structural element (L) is provided both on the outside and on the inside of the sectional element itself, said first structural element (P) is reduced to two laminas made of aluminium, steel, or PVC set substantially in a direction perpendicular to the external and internal plastic laminates (L). 
   
   
       11 . The sectional element according to  claim 3 , characterized in that the sectional element made of aluminium or steel or PVC (P) is designed to be fixed to the laminated plastic (L) by means of simple fitting by pressure of the latter on a purposely provided tab (A) and a purposely provided contrast shoulder set longitudinally and made on the same sectional element (P) itself, with the result that an improvement in the finish of the end edges is obtained without the use of weatherproofing (G). 
   
   
       12 . The sectional element according to  claim 2 , characterized in that, in the case where said second structural element (L) is provided both on the outside and on the inside of the sectional element itself, the laminated plastic (L) on the outside is made up of a sandwich panel, in which the internal part is insulating and is made of polystyrene or polyurethane or some other suitable material, whilst its two outer skins are made of said laminated plastic (L). 
   
   
       13 . A sectional element for the fabrication of door and window frames for the residential and industrial building sector, characterized in that it is substantially made up of at least two structural elements rigidly fixed together: at least one first structural element (P) made of aluminium or steel or PVC or other suitable material and having an open hollow cross section or a closed hollow cross section, and at least one second structural element (L) made of laminated plastic or thermosetting material provided with a colouring and/or a surface finish having a decorative and aesthetic function; said first structural element (P) being purposely provided with fixing means (A) designed to constrain said second structural element (L) firmly to the previous one. 
   
   
       14 . A door or window frame for the residential and/or industrial building sector, characterized in that it is made with sectional elements according to  claim 1 . 
   
   
       15 . (canceled) 
   
   
       16 . The sectional element according to  claim 10 , characterized in that, in the case where said second structural element (L) is provided both on the outside and on the inside of the sectional element itself, said first structural element (P) is reduced to two laminas made of aluminium, steel, or PVC set substantially in a direction perpendicular to the external and internal plastic laminates (L). 
   
   
       17 . The sectional element according to  claim 12 , characterized in that, in the case where said second structural element (L) is provided both on the outside and on the inside of the sectional element itself, the laminated plastic (L) on the outside is made up of a sandwich panel, in which the internal part is insulating and is made of polystyrene or polyurethane or some other suitable material, whilst its two outer skins are made of said laminated plastic (L).