Printing – Stenciling – Processes
Patent
1996-08-22
1998-10-13
Bennett, Christopher A.
Printing
Stenciling
Processes
101127, 1011271, B41M 112, B05C 1706
Patent
active
058196544
ABSTRACT:
A frame is disclosed for stretching a printing screen quickly and with uniform application of tension to the screen. The frame includes a base portion that defines a stretching plane in which the workpiece is stretched. A swingable portion of the frame pivots relative to the base and moves from a relaxed position in which the swingable portion defines a plane that intersects the stretching plane, to a stretching position in which the swingable portion is fixed in the stretching plane. A retainer secures the edges of the screen to the frame such that the screen mesh is uniformly stretched as the swingable portion is pushed into the stretching plane. A tension cable extends through the frame over a series of pulleys spaced several locations through each leg of the frame. Increased tension on the cable pulls the swingable portion of the frame into the stretching plane and holds the frame in that position to maintain tension on the screen. The screen itself has arcuate edges that curve to reduce the width and length of the screen toward the center of the screen. The peripheral margins of the screen are adhered to the retainers such that each arcuate edge conforms to the longitudinal axis of the retainer on which it is mounted. This linear adhesion of the arcuate edges helps ensure that the greatest amount of stretching occurs at the center region of the screen, which might otherwise tend to sag.
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Screen Printing Products; Uncommon Conglomerates, Inc.
Easy Sheet ABC020189; ABC Extrusion Company.
Precision Your Single Source; Precision Screen Machines, Inc.
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