Patent ID: 7976663
Filing Date: 2011-07-12
Classification: B07B,Y10T

Abstract:
1. A method for producing a laminated screen element comprising the following steps: providing a sheet of thin metal plate; providing at least one layer of screen cloth; providing epoxy; providing a frame forming press comprising a cradle having a semi-circular interior bottom surface with a cradle first side extension and a cradle second side extension extending from opposite sides of said cradle bottom surface, wherein said cradle first side extension is positioned on a first support and said cradle second side extension is positioned on a second support; providing a laminating press; perforating the sheet of thin metal plate to produce a screen element frame having perforations; positioning the screen element frame substantially horizontally between said cradle first and second side extensions; pushing the screen element frame downward into said cradle against said cradle interior bottom surface with a forming element; moving said cradle first and second side extensions inwardly toward each other with the first and second supports during the step of pushing; forming said cradle interior bottom surface to be more than a half circle during the step of pushing; curving the screen element frame with the frame forming press to produce a semi-circular curved screen element frame; coating the curved screen element frame with epoxy; placing the curved coated frame into the laminating press, and placing the at least one layer of screen cloth over the coated frame in said laminating press; and heating the coated frame and the at least one layer of screen cloth placed over the coated frame in the laminating press by contacting with a heating element, thereby producing a laminated screen element.