HEATER MODULE ASSEMBLY FOR AN APPARATUS FOR MELTING AND DISPENSING THERMOPLASTIC MATERIAL

WIPO Patent Application WO1982000193

A1

Apparatuses for melting and dispensing thermoplastic material in the prior art have slow melting and slow flow velocity of the thermoplastic material. A heater module adapted to be used in an apparatus for melting and dispensing thermoplastic material (24), with other like modules for forming a pre-melt and/or a melting stage (31, 32), for heating the thermoplastic material (24). Each module is of uniform construction and includes an elongated core (35) having a plurality of longitudinally spaced first fins (36) projecting from one side of the core (35) and second fins (37) projecting from the other side of the core (35), but longitudinally uniformly staggered from the first fins (36), so that a plurality of parallel modules adjacent to each other will have the recesses (38, 39) between adjacent fins (36, 37) closed by the opposite fins (37, 36) to form longitudinally staggered vertical holes for the fluid passage of the melted thermoplastic material (24). The staggered vertical holes in the heater modules have increased ratio of the heating surfaces to the opening area and thus reduce the melting time and increase the flow velocity of the thermoplastic material.

MERCER D (US)

PCT/US1980/000825

January 21, 1982

June 30, 1980

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MERCER CORP (US)

B05C5/04; B29B13/02; F27B14/06; F27D99/00; F27B14/08; (IPC1-7): F27B14/00; B05C1/00; B67D5/62; F27B3/06

US3377466A	1968-04-09
US3531023A	1970-09-29
US3964645A	1976-06-22
US2809772A	1957-10-15
US3352279A	1967-11-14
US3217793A	1965-11-16
US3396458A	1968-08-13
US3632987A	1972-01-04
US3792801A	1974-02-19
US4009974A	1977-03-01

See also references of EP 0054548A4

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