Impact door construction and method of manufacture

An impact traffic door comprising in combination:

• a frame comprising a plurality of peripheral frame members enclosing an interior open space, and at least one coplanar interior frame member traversing said interior open space and subdividing same into two or more compartments;
• each frame member being made of a thermoplastic material and comprising first and second oppositely-facing surfaces that extend parallel to one another, each frame member also having at least one energy-concentrating strip extending along each of said first and second oppositely-facing surfaces;
• and
• first and second door face panels each made of a thermoplastic material, said panels being disposed parallel to one another adjacent to and covering said first and second oppositely facing surfaces, said panels being welded to said oppositely facing surfaces at said energy-concentrating strips so as to form an integral structure;
• said first and second panels each including an aperture defining a window opening, with the aperture in said first panel being smaller than the aperture in said second panel so that the edge of said first panel defining said window opening being exposed to function as a glazing surface;
• a window panel engaged with said glazing surface;
• and
• a frame member attached to said second panel and overlapping said window pane so as to hold it against said glazing surface.

An impact traffic door comprising in combination:

• a frame comprising a plurality of peripheral frame members enclosing an interior open space, and at least one coplanar interior frame member traversing said interior open space and subdividing same into two or more compartments;
• each frame member being made of a thermoplastic material and comprising an elongate beam having at least two opposed energy-concentrating strips first and second oppositely-facing surfaces that extend parallel to one another, each frame member also having at least one energy-concentrating strip on each of said first and second oppositely-facing surfaces;
• and
• first and second door face panels each made of a thermoplastic material, said panels being disposed parallel to one another adjacent to and covering said first and second oppositely-facing surfaces of said frame members, said panels being ultrasonically welded to said frame members at said energy-concentrating strips, said panels enclosing said interior space;
• said first and second panels having first and second apertures respectively with said first and second apertures being in registration with one another;
• each of said apertures having a peripheral edge defining a window opening;
• additional frame members between said panels arranged to form a window frame aligned with said window openings;
• and
• first and second window frames disposed in said window openings and bonded to opposite sides of said window frame.

An impact traffic door comprising in combination:

• a frame comprising a plurality of peripheral frame members enclosing an interior open space, and at least one coplanar interior frame member traversing said interior open space and subdividing said open space into two or more compartments;
• each frame member being made of an untrasonically weldable plastic material comprising first and second flat opposite surfaces each having at least one ultrasonic energy-concentrating strip;
• at least one of said peripheral frame members comprising a hollow rectangular section and a hollow nose-shaped section, with said first and second opposite surfaces constituting opposite surfaces of said hollow rectangular section;
• and
• a pair of door face panels each made of an ultrasonically weldable plastic material, said panels being disposed in parallel relationship to one another adjacent to and covering said first and second opposite surfaces respectively of said frame members, said first and second panels being ultrasonically welded to said first and second opposite surfaces respectively of said peripheral and interior frame members at said energy-concentrating strips, whereby said frame and said panels form an integral structure.

An impact traffic door comprising in combination:

• a frame consisting of a plurality of peripheral frame members enclosing an interior open space, and at least one coplanar interior frame member traversing said interior open space and subdividing same into two or more compartments;
• each frame member being made of a thermoplastic material and comprising first and second oppositely facing flat surfaces that extend parallel to one another, each frame member also having at least one energy-concentrating strip on each of its said first and second oppositely facing flat surfaces;
• and
• first and second door face panels each made of a thermoplastic material, said first and second panels being disposed parallel to one another in adjacent and covering relation with said first and second oppositely facing surfaces, said panels being welded to said oppositely facing surfaces at said energy-concentrating strips, whereby said frame and said panels form an integral structure.