Dear Panrana,
Unfortunately, the glued on screen is mechanically stretched and glued on with a screen stretcher. I have attached a brochure of the Sefar screen stretching equipment we use at our facility as well as a manual screen stretcher. You cannot re-screen the trays without this equipment.
The Sefar pneumatic stretcher is approximately $15,000.00 (not including export crating or shipping expenses). The manual Tension Quick stretcher is approximately $3,000.00 (not including export crating or shipping expenses). The customer would also need to purchase the screen and adhesives. However, they would have the equipment required to re-screen their own trays for future use. The adhesives would need to be purchased through a local supplier like Sefar.
Otherwise, your most economical option would be to purchase a new screen tray with the correct screen mesh.
Please let me know if there is anything else that we can do for you.