Process for improving electrostatic charging of plexifilaments

Details Process for improving electrostatic charging of plexifilaments Process for improving electrostatic charging of plexifilaments

1994-03-25

1997-07-01

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Direct application of electrical or wave energy to work

Extrusion molding

264205, 264211, 26421114, D01D 511

Patent

active

056435258

ABSTRACT:
The efficiency of electrostatic charging of polyolefin web in a process for flash-spinning polyolefin plexifilament from solution in a C.sub.4 -C.sub.7 hydrocarbon, forming the plexifilament into a web, electrostatically charging the web, and laying the web down as a sheet is improved by having present in the electrostatic charging step environment a charge-improving compound, which can be any one of a number of specifically identified classes of charge-improving compounds. The charge improving compounds are present in an amount of at least 0.1 ppm of the atmosphere in that environment or more.

REFERENCES:
patent: 3081519 (1963-03-01), Blades et al.
patent: 3169899 (1965-02-01), Steuber
patent: 3387326 (1968-06-01), Hollberg et al.
patent: 3860369 (1975-01-01), Brethauer et al.
patent: 5023025 (1991-06-01), Shin
patent: 5081177 (1992-01-01), Shin
patent: 5147586 (1992-09-01), Shin et al.

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