Apparatus for continuous production of elongated foam plastics blocks
AssigneeMaschinenfabrik Hennecke GmbH
InventorsWilli Schmitzer, Reiner Raffel, Ferdinand Althausen, Ferdinand Proksa
Life of this patent
Estimating the term…
Abstract
Continuous foam blocks with rectangular cross-section are produced on a side-limited conveyor band by feeding a foamable mixture to a cover foil travelling with said conveyor band and covering the free surface of the mixture with a bearing layer not earlier than immediately after the supply of the mixture and not later than before the zone in which a skin would be formed on the free surface of the block.
Claims16
Apparatus for the production of continuous foam plastic blocks by free foaming, comprising:
- a. a conveyor belt assembly comprising an endless revolving conveyor belt and lateral boundary members over the upper run of the belt for limiting lateral movement of the foaming plastic,
- b. means for continuously supplying cover foil to the upper run of the belt and the lateral boundary members for separating the foaming plastic from the conveyor belt and lateral boundary members,
- c. means for supplying a mixture foamable to form the foam plastic, to the rear end portion of the upper run after the cover foil of (b) is applied,
- d. means for laying a web or foil onto the mixture forward and adjacent said mixture supply means (c) for bearing and floating on, and traveling with the mixture during the foaming thereof,
- e. a leveling device comprising a slatted grating disposed adjacent the supply means for overlying the web or foil and resting on the foaming plastic, for surface levelling of the rising profile of the foam transversely of the conveying direction, the leveling device being adapted to be supported by the raising foam.
Apparatus for the production of continuous foam plastic blocks by free foaming, comprising:
- a. a conveyor belt assembly comprising an endless revolving conveyor belt and lateral boundary members over the upper run of the belt for limiting lateral movement of the foaming plastic,
- b. means for continuously supplying cover foil to the upper run of the belt and the lateral boundary members for separating the foaming plastic from the conveyor belt and lateral boundary members,
- c. means for supplying a mixture foamable to form the foam plastic, to the rear end portion of the upper run after the cover foil of (b) is applied,
- d. means for laying a web or foil onto the mixture forward and adjacent said mixture supply means (c) for bearing and floating on, and traveling with the mixture during the foaming thereof,
- e. a leveling device disposed adjacent the supply means for overlying the web or foil and resting on the foaming plastic, for surface leveling of the rising profile of the foam transversely of the conveying direction, the leveling device being adapted to be supported by the rising foam,
- f. means for positioning a liquid impermeable sheet between said web or foil and the leveling device.
Apparatus for the production of continuous foam plastic blocks by free foaming, comprising:
- a. a conveyor belt assembly comprising an endless revolving conveyor belt and lateral boundary members over the upper run of the belt for limiting lateral movement of the foaming plastic,
- b. means for continuously supplying cover foil to the upper run of the belt and the lateral boundary members for separating the foaming plastic from the conveyor belt and lateral boundary members,
- c. means for supplying a mixture foamable to form the foam plastic, to the rear end portion of the upper run after the cover foil of (b) is applied,
- d. means for laying a web or foil onto the mixture forward and adjacent said mixture supply means (c) for bearing and floating on, and traveling with the mixture during the foaming thereof,
- e. a leveling device which is adjustable in width, disposed adjacent the supply means for overlying the web or foil and resting on the foaming plastic, for surface leveling of the rising profile of the foam transversely of the conveying direction, the leveling device being adapted to be supported by the rising foam.
Dependencies are inferred from the claim text.