Production Line of Sandwich Door

This production line is used to produce sandwich panels for making automatic
doors with the middle layer of rigid polyurethane foam and with aluminum sheet
or color steel sheet as the top and bottom face layers. The laminated panel is
between 30 and 100 mm in thickness, 350~700mm in width, length determined
by the customer. The operation principle of this line is as follows: PU raw materials
are delivered into the mixing head through the metering pump and then evenly
injected onto the bottom facing sheet going toward conveyors along with the top
superficial sheet. Between the upper and lower conveyors, the liquid materials
start foaming and are hardened into shape, after which the formed door panel is,
by an automatic tracking cutter, cut into segments according to preset length.

The production line for door panels is the same as the line for wall and roof panels
in terms of structure and operation principle. It has already passed the high and
neo-tech product identification carried out by the Economic and Trade Commission
of Jiangsu Province and Jiangsu Science and Technology Department. (Product no.:
041111G0025N).

Main technical parameters:
1) Reciprocating times of injection head per minute: more than 60
2) Production line speed: 2~4 m/min
3) Laminating length of the laminator: 20m
4) Maximum temperature of hot-air circulating: 70 degrees centigrade
5) Maximum rising height of the top conveyor: 250mm
6) The total capacity for the production line: 120~170kW
7) External dimensions: 70,000 x 5,300 x 3,800mm (length x width x height)
8) Weight: 40MT