Apparatus for producing rigid foam plastic insulating panels
OwnerEugene R. Tippmanninventor
Life of this patent
Estimating the term…
Abstract
An apparatus is disclosed for making foam plastic insulating panels. The apparatus has a lower conveyor band forming a support surface and a first continuous form belt on the support surface and an upper conveyor band forming a limiting surface and a second continuous form belt on the limiting surface. The conveyor bands are supported for rotation between conventional tires, the inflation of at least one of the tires controls the pressure on the form belts adjacent their initial point of contact. Resilient metal clips are provided which lock the support and limiting surfaces together during curing of the foam plastic panel.
Claims16
An apparatus for making insulating siding panels of foamable plastic material comprising:
- a. a lower conveyor band having a series of abutting platens forming a continuous support surface and a first continuous form belt on said support surface;
- b. an upper conveyor band spaced from said lower conveyor and having a series of abutting platens forming a continuous limiting surface in a plane parallel to said horizontal plane of said lower conveyor and a second continuous form belt on said limiting surface, said first and second form belts defining a space therebetween corresponding to the panel to be produced when said belts are in abutting relationship;
- c. pneumatic means for exerting an adjustable, opposed pressure on said form belts in the area adjacent the initial point of contact between said belts;
- and
- d. means for maintaining said form belts together against the pressures exerted by said foamable plastic material.
Dependencies are inferred from the claim text.