Vibrotex Telas Metálicas XXXXXXXXXXXXXX

POLYURETHANE SCREENS

POLYURETHANE is a polymer developed for application where anti-abrasive and anti-corrosive properties are required for substitution of parts of worn out iron, steel, plastic or rubber.

Due to its excellent abrasion resistance characteristic, POLYURETHANE has been successfully applied for classification of drainage in stone-quarries or mines, generally in situations where the basic requirement is abrasion resistance. In such a situation, it easily outperforms conventional steel or rubber screens.

As it is a resin, the physical, chemical and mechanical characteristics of the POLYURETHANE vary according to the formulations applied, which may vary from manufacture to manufacture with implications for the quality of the end product.

From this analysis, we can assert that the POLYURETHANE screens, despite being excellent in high abrasive situations, also depend upon the good quality of the POLYURETHANE used.

The polyurethane sieves from Vibrotex, manufactured since 1974, are made of raw material from Crompton company (which is globally recognized for the excellence of their products) and the biggest POLYURETHANE manufacturer in BRASIL (for the most diverse and largely used applications in the mining sector.

THE POLYURETHANE SCREENS can be manufactured for application in either vibrating or stationary screens by typical systems as in the example below:

TENSIONED SIEVE

This type of screen hardly requires changes in the equipment as they are manufactured with internal steel cables to the polyurethane. Attached to side plates bent in the shape of a hook, they allow for the screen tensioning in the equipment.

BUILT-IN FRAME SCREENS

They are screens of metallic structure built in the POLYURETHANE for greater rigidity.
Their applications are well assorted, but in flat equipment may be attached through wedges or screws on the sides and straight edges on the central attachment.

They can also be curved for application in TROMEL.
It is recommended that they are attached to each other at a maximum distance of 400mm in order to prevent permanent plastic deformation.

	HALF-BUILT-IN FRAME SCREENS Screens with characteristics similar to the built-in frame screens, but the metallic structures are part inserted into the polyurethane and part exposed. In order to permit within the structure the use of larger sized metallic bars, they become more resistant to impact, which can be attached at a distance of up to 800 mm. The same accessories for the built-in frame are used for the attachment.
	METTALIC/HALF-BUILT-IN FRAME SCREENS
	Estrutura metálica e tela

	INFLECTED SCREENS These are screens which consist of a wire grill inserted in the polyurethane, functioning as a supporting structure. They are ideal for screens of large dimensions, and are usually attached to the equipment through screws on the sides and central part of the screen.

	VIBROFIX MODULAR SCREENS: developed by VIBROTEX for pressure attachment of the modules, which are dimensioned according to the size of the sieve. Their light metallic structure makes it easy to handle in the assembly and substitution of worn parts. Its attachment is carried out on a frame protected by a polyurethane coating, surpassing, this way, the systems using metallic supports.

In addition to the MODULAR VIBROFIX and VIBROTEX, screens other types of modules with dimensions, accessories and attachments are also manufactured according to the client's need.


Attachment of module and VIBROFIX