Process for producing microporous tubes of polytetrafluoroethyle

Details Process for producing microporous tubes of polytetrafluoroethyle Process for producing microporous tubes of polytetrafluoroethyle

1979-05-23

1981-02-10

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Production of continuous or running length

264127, 264280, 264292, B29D 2301, B29D 2708

Patent

active

042501385

ABSTRACT:
Polytetrafluoroethylene resin tubes having small pore size and high porosity are produced by a process which includes stretching the tubes by drawing using a metal die and a metal plug. By using the die and plug, the stress necessary for stretching is converted to a compressive force in the thickness direction of the tube. This compressive force is an essential factor in producing the microporous structure of the tubes. In addition, when stretching is performed by drawing, a ratio of thickness to inside diameter of the tube of 0.07 or less can be easily achieved.

REFERENCES:
patent: 3085290 (1963-04-01), Chu
patent: 3295166 (1967-01-01), Owingo
patent: 3356108 (1967-12-01), Johnston
patent: 3907955 (1975-09-01), Viennot
patent: 3953566 (1976-04-01), Gore

Affiliated with

Also associated with

Rating

Process for producing microporous tubes of polytetrafluoroethyle 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 producing microporous tubes of polytetrafluoroethyle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing microporous tubes of polytetrafluoroethyle will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1665279