Process for the prevention of socalled fish eyes in plastic film

Details Process for the prevention of socalled fish eyes in plastic film Process for the prevention of socalled fish eyes in plastic film

1998-07-17

2000-11-14

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

264 85, 264565, 425135, B29C 704

Patent

active

061465615

ABSTRACT:
To prevent socalled fish eyes or to reduce the number of fish eyes per unit of area in plastic films, manufactured according to the casting process or according to the blown film process, the number of fish eyes per unit of area is measured in the tubular film, which is cast or blown or collapsed. When the measurement reveals a number of fish eyes per unit of area that exceed a specified value, nitrogen or antioxidants are blown or put into the hopper until the number of fish eyes per unit of area falls below a critical number.

REFERENCES:
Chemical Process Control, Intro. to Theory and Practice, G. Stephanopoulos, Prentice Hall, Inc., pp. 2-11, 1984.
Plastics Extrusion Technology, 2nd Ed., A. Griff, Reihold Book Corp., pp. 152-155, Nov. 1985.
Plastics Extrusion Technology Handbook, S. Levy and J. F. Carley, eds., Industrial Press, Inc. pp. 267-307, Sep. 1993.

Affiliated with

Also associated with

Rating

Process for the prevention of socalled fish eyes in plastic film does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the prevention of socalled fish eyes in plastic film, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the prevention of socalled fish eyes in plastic film will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2062027