Method and apparatus for making a self-coiling sheet

Details Method and apparatus for making a self-coiling sheet Method and apparatus for making a self-coiling sheet

1980-02-04

1981-08-11

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Dividing work to form plural articles

264281, 264339, 264DIG40, 4253051, 425363, 425391, 425DIG5, 425DIG7, B29C 1702

Patent

active

042833620

ABSTRACT:
A method and apparatus for making a self-coiling sheet. The apparatus includes a work station at which a relatively short section of a sheet of flexible material, e.g., crystalline polyethylene terephthalate, is folded upon the remainder of the sheet. The sheet is then advanced onto the carrier plate which, in turn, is mounted for movement toward and away from a gap defined by a pair of superposed pressure-applying rollers. The carrier plate is adapted to deposit the sheet between the rollers such that the folded section of the sheet is located in engagement with one of the rollers and the underlying portion of the sheet is in engagement with the other roller. The rollers are rotated in the same direction so as to drive the folded section of the sheet toward the carrier plate while simultaneously driving the remainder of the sheet in the opposite direction. This action results in the sheet being ejected from the gap of the rollers as a multi-layered generally cylindrical coil having a permanent set. The sheet may be uncoiled and, when left free, will automatically return to its coiled condition.

REFERENCES:
patent: 638090 (1899-11-01), Bryce
patent: 901031 (1908-10-01), Overkamp et al.
patent: 2053811 (1936-09-01), Boyle
patent: 2402874 (1946-06-01), Cohen et al.
patent: 2826523 (1958-03-01), Blaszkowski et al.
patent: 3370111 (1968-02-01), Boone
patent: 3426115 (1969-04-01), Taber
patent: 3861291 (1975-01-01), Guzaski
patent: 3940774 (1976-02-01), Trester
patent: 3994656 (1976-11-01), Van Ausdall
patent: 4072968 (1978-02-01), Land et al.

Affiliated with

Also associated with

Rating

Method and apparatus for making a self-coiling sheet 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 and apparatus for making a self-coiling sheet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for making a self-coiling sheet will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1025657