Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Forming continuous work followed by cutting
Patent
1985-09-12
1987-09-22
Anderson, Philip
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Forming continuous work followed by cutting
264162, 264239, 264296, 425220, 425304, B28B 1112
Patent
active
046954180
ABSTRACT:
In the manufacture of roof tiles comprising extruding a continuous shaped ribbon of tile forming material onto a succession of pallets, and cutting the ribbon where pallets adjoin to form individual green state tiles on pallets, there is performed the step of causing a cutting tool to engage with the upper surface of the ribbon only for part of the length of each pallet whereby a recess is formed in the upper surface of each tile. In a particular embodiment the recess is a channel cut in the tile at a location immediately downstream of the extruding step. The recess is also subsequently smoothed by applying a smoothing roll thereto.
REFERENCES:
patent: 753981 (1904-03-01), Hoelsche
patent: 782483 (1905-02-01), Cammeyer
patent: 1619489 (1927-03-01), Schwarz et al.
patent: 2644217 (1953-07-01), Agar
patent: 3268637 (1966-08-01), Cremer
patent: 3354842 (1967-11-01), Manspeaker
Baker Robin M.
Oberoi Bhusan K.
Papper Ernest G.
Rae Malcolm C.
Sargeant Paul R.
Anderson Philip
Redland Roof Tiles Limited
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