Device and process for the removal of the screen coating from printing screens for silk screen printing
OwnerPeter Zimmerinventor
Life of this patent
Estimating the term…
Abstract
Device and process for the removal of the coating layer which forms the screen stencil on a rotary printing screen for screen printing from the rotary printing screen. The device comprising a rotatable support roller and a nozzle unit for spraying a jet of liquid onto the rotary printing screen at high pressure, the rotary printing screen lying on the support roller in the working area of the nozzle unit, and the device having a free space beneath the support roller for a rotary printing screen section freely suspended beneath the support roller.
Claims23
A device for removing a coating layer which forms the screen stencil on a rotary printing screen for screen printing from said rotary printing screen comprising:
- a frame;
- a mainly horizontal rotatable support roller, wherein said support roller is attached to said frame such that a free space is created beneath said support roller, wherein said rotary printing screen is exchangeable arrangeable on said rotatable support roller such that a section of said rotary printing screen is directly supported by said support roller whereas another section of said rotary printing screen is freely suspended in said free space beneath said support roller;
- and
- at least one nozzle unit, wherein said nozzle unit is positioned so that a high pressure jet of liquid expelled from said nozzle is substantially directed towards said rotary printing screen, wherein said high pressure jet removes said coating layer.
A method for the removal of a coating layer which forms the screen stencil on a rotary printing screen for screen printing from said rotary printing screen comprising the steps of:
- Placing said rotary printing screen onto a support roller such that a section of said rotary printing screen is directly supported by said support roller whereas another section of said rotary printing screen is freely suspended beneath said support roller, said support roller being able to accommodate rotary printing screens of varying circumferences;
- and spraying a high pressure jet of liquid onto the screen to remove the coating layer.
A method for controlling the position of a rotary printing screen on a mainly horizontal rotatable support roller comprising the steps of:
- pressing a contact member of at least one steering member of a steering device against said rotary printing screen on said rotatable support roller,
- detecting the position of said rotary printing screen on said support roller in the horizontal direction with a sensor and
- tilting said contact member on said rotary printing screen while said support roller moves said rotary printing screen by rotating thereby adjusting the lateral position of the rotary printing screen on the support roller.
Dependencies are inferred from the claim text.