Method of making a plastic tube with plural lumens

Details Method of making a plastic tube with plural lumens Method of making a plastic tube with plural lumens

1976-08-13

1979-02-06

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

264530, 264167, 264541, 264173, 264177R, 264209, 4253261, 425381, B29C 1702, B29D 2304

Patent

active

041384571

ABSTRACT:
A plastic tube is provided which has a main lumen, an auxiliary lumen, and an integral connector at one end for connecting the main lumen in fluid communication with another device. The auxiliary lumen extends longitudinally within the side wall of the tube with the integral tube connector free of the auxiliary lumen. The tube can be made by extruding thermoplastic material through a die having a hollow main lumen die pin and a hollow auxiliary lumen die pin adjacent the die outlet orifice. Air under pressure is supplied to both die pins to produce tubing extrudate having main and auxiliary lumens. The pressure of the air supplied to the auxiliary lumen forming pin is reduced at programmed intervals during the extrusion of the tubing so that selected portions are free of an auxiliary lumen or have a lumen of limited size. The tubing can be severed so that it has a selected portion at one end that can serve as an end connector.

REFERENCES:
patent: 3002615 (1961-10-01), Lemelson
patent: 3304353 (1967-02-01), Haratuneian
patent: 3674404 (1972-07-01), Burus et al.
patent: 3755525 (1973-08-01), Sheridan et al.
patent: 3929951 (1975-12-01), Shibata et al.

Affiliated with

Also associated with

Rating

Method of making a plastic tube with plural lumens does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of making a plastic tube with plural lumens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making a plastic tube with plural lumens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-891453