The flat protective bellows with fixed blades are widely used on all types of machine tools: their use is very frequent in machining centres and chip removal machines. To protect the bellows, when they are hit by hot chips, it is necessary to shield metal elements, called “lamellae”: these work as a shield from hot and incandescent chips. PEI thermo-welded flat bellows are composed of: - Bellows (3): fabrics resistant to water, oil, coolants, dust and shavings; - PVC supports (4): give rigidity to the entire bellows and are cut to size according to the profile of the customer’s guides; - Connection flanges (1 and 2): for simple attachment to the machine. The working position of this application with movable blades are: -Horizontal; -Vertical; -Front