Die for melt-blowing apparatus

Details Die for melt-blowing apparatus Die for melt-blowing apparatus

1996-05-24

1998-03-17

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Means making particulate material directly from liquid or...

By means applying fluid jet or blast to unconfined liquid...

264 12, 264 406, 26421114, 425 722, 425144, 4253782, 4253791, 4253822, 425464, B29B 906, B29C 4778

Patent

active

057284075

ABSTRACT:
A die for melt-blowing apparatus, which has a die body, a nozzle piece, and a lip plate. The nozzle piece is divided into plural temperature-controlling regions in a direction crosswise to a spinning direction. A temperature sensor is used to measure the temperature at a portion surrounding a nozzle orifice in the nozzle piece in each of the divided temperature-controlling regions. A heated gas is applied directly to the nozzle piece for controlling the temperature of the portion surrounding the nozzle orifice to a predetermined temperature. Using this die body, a melt-blown non-woven fabric with a uniform distribution of the weight per unit area can be easily obtained.

REFERENCES:
patent: 3761553 (1973-09-01), Richardson
patent: 3866669 (1975-02-01), Gardiner
patent: 5196207 (1993-03-01), Koenig
patent: 5260003 (1993-11-01), Nyssen et al.
patent: 5487655 (1996-01-01), Frey et al.
Holman, J.P., Heat Transfer, 7th ed., McGraw-Hill Publishing Co., NY, pp. 1-22, 1990.

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