Plastic article or earthenware shaping or treating: apparatus – With apparatus assembly or dismantling means or with idle part – Means permitting removal or substitution of elements during...
Patent
1986-03-31
1987-10-06
Hart, Charles
Plastic article or earthenware shaping or treating: apparatus
With apparatus assembly or dismantling means or with idle part
Means permitting removal or substitution of elements during...
425190, 425209, 425228, 425229, A04J 2100
Patent
active
046980067
ABSTRACT:
Apparatus for use in the reaction moulding of plastics materials in which two liquid components are mixed in a screw type or similar mixer. Mixed material is ejected or poured into a mould via a passageway which latter is one of a plurality of similar passageways arranged radially around a wheel. Each passageway remains in the lowermost (pouring) position for a period of time during which it is reckoned to remain in a satisfactory working condition, and the wheel is then automatically indexed to bring the next passageway into operation. Cleaning structure is employed to clean out the used passageways after a period of time known by experience to be sufficient for the material to be at least partially cured. In this way the passageways can be re-used in a continuous production machine. The length of time that each passageway remains in the pouring position is found from experience of the particular materials being used; it is found in practice that the passageway remains in a satisfactory working condition for about 60 seconds.
REFERENCES:
patent: 3389433 (1968-06-01), Vicini
patent: 4065241 (1977-12-01), Orlowski
patent: 4169679 (1979-10-01), Miller et al.
patent: 4219319 (1980-08-01), Gater et al.
C. & J. Clark Limited
Hart Charles
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