Metering meltblowing system

Details Metering meltblowing system Metering meltblowing system

1991-09-11

1993-08-17

Heitbrink, Jill L.

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

264 407, 264518, 264555, 2642108, 425 66, 425 722, 425141, 425145, B29C 4734

Patent

active

052366413

ABSTRACT:
A meltblowing system with a modular die design and on-line monitoring of web properties is described. The modular die consists of individually fed side-by-side meltblowing units. Automated control of the polymer feed rates to the units have been shown to produce a web with excellent uniformity of basis weight. The die also features a valve assembly for minimizing polymer afterflow and die tip plugging.

REFERENCES:
patent: 4268235 (1981-05-01), Bean et al.
patent: 4708619 (1987-11-01), Balk
patent: 4818463 (1989-04-01), Buehning
patent: 4820142 (1989-04-01), Balk
patent: 4983109 (1991-01-01), Miller et al.

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