Paper making and fiber liberation – Apparatus – Molding pulp and non-pulp insert or preform
Patent
1979-03-02
1980-09-23
Fisher, Richard V.
Paper making and fiber liberation
Apparatus
Molding pulp and non-pulp insert or preform
162300, 162336, D21H 100
Patent
active
042241057
ABSTRACT:
Paper pulp insulation of uniform weight per unit length is formed simultaneously on each of a plurality of advancing electrical conductors (21--21) by the use of a dual zone headbox (23) which cooperates with a forming cylinder (24). In one zone of the headbox, the average velocity of a pulpous mixture flowing in a channel (54) is controlled by a first velocity control member (58) after which the pulpous mixture is split into a plurality of streams to form a pulp ribbon (29) below each of the conductors on the periphery of the forming cylinder. In the other zone, the pulpous mixture is passed through a channel (57) prior to being split into individual streams that are deposited as ribbons (31--31) above the conductors. The average velocity of the pulpous mixture in the channel (57) in the other zone is controlled by a second velocity control member (66) having a plurality of discrete individually adjustable sections which are aligned with the streams. Selected sections of the second velocity control member (66) are adjusted to insure that the combined weight of each increment of the ribbon (31) of the pulpous mixture which is deposited above each conductor together with each associated increment of the underlying ribbon (29) is substantially constant.
REFERENCES:
patent: 1615381 (1927-01-01), Hosford
patent: 1666214 (1928-04-01), Little
patent: 1765533 (1930-06-01), Jespersen
patent: 3810817 (1974-05-01), Arledter
patent: 3867252 (1975-02-01), Skrabak et al.
patent: 3888729 (1975-06-01), Parker
patent: 3892622 (1975-07-01), Skaugen
Lynch Brian
Wright, Jr. James G.
Chin Peter
Fisher Richard V.
Somers E. W.
Western Electric Company Inc.
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