METHOD AND DEVICE FOR WELDING 3D CONCRETE BURNERS AND COATING BOILERS Russian patent published in 2017 - IPC A47C27/08 

FIELD: textile, paper.

SUBSTANCE: corrugated envelope contains the first finishing material of a separate element that is placed on the side of both outer sides of the individual elements and covers the outer sides of the individual elements; The materials of the individual element laid layer by layer over the first finishing material of the individual element so as to correspond to the number of individual elements to be manufactured, each of which has a vent hole; The second finishing material of a separate element that is placed on the other side of the outer sides of the individual elements and covers the outer sides of the individual elements; An air injection hole formed in the second finishing material of the individual element for injecting / discharging air into and out of the separate element; first adhesive-preventing films placed around the ventilation opening of the materials of the individual elements are not located in all gaps between the materials of the individual element but alternately between the materials of the individual element and prevent thermal welding of the two materials of the individual element adjacent to the top and bottom along the circumference of the ventilation openings, Holes around the circumference are heated; And the second adhesion preventing films placed around the materials of the individual element are not located in all gaps between the materials of the individual element but alternately between the materials of the individual element where the first antiadhesive films are not placed, while preventing the thermal welding of the edges of the two materials of the individual element adjoining Above and below, when the edges of the materials of the individual elements are heated.

EFFECT: simplicity of making a 3D corrugated board.

3 cl, 15 dwg