Production of glass fibers and technical textiles

GLASS FIBERS AND TEXTILES

This area of consumption includes the production of glass fibers and textiles made of glass and synthetic fibers.

The production of glass fibers and textiles is one of the most interesting applications of vinyl acetate dispersions. PVAc-dispersions are in the technology of producing primary fibers and woven and nonwoven glass fiber fabrics, one of the basic components of finishing baths. Without them, the fiber would be fragmented, brittle, less flexible and difficult to process. This finishing solution delivers the fiber its useful properties.

In the manufacture of non-woven fabrics of synthetic fibers, or other organic fibers from secondary raw materials, PVAc-dispersions are used for the same purpose as glass fibers, but here they play a role of textile refinement, fixation of individual fibers, water permeability reduction, mechanical resistance, and so on.

General features

Vinyl acetate dispersions are white liquids with little fluidity and characteristic odor. They are non-explosive, non-flammable and non-toxic. The film formed by the drying of the dispersion is transparent, relatively hard, non-stick, and slightly brittle. From a chemical point of view, these are aqueous dispersions of homopolymeric polyvinyl acetate in water, without plasticizers, or, in the case of Duvilax KA-31, an aqueous copolymer dispersion of vinyl acetate with an acrylic acid ester.

Glass fibers

● Duvilax LM-52 is used as the primary component in the lubricant solution for pulling primary fibers and for coating some types of emulsion mats.
● Duvilax B, Duvilax B-60/330 with increased resistance to mechanical stress, together with the addition of starch and hydrophobizing agents, is used for finishing fabrics for the production of bituminous systems designed for insulation of flat roofs, for pressure insulation against groundwater, for protection of underground steel pipelines , reinforcement of thermal insulation materials based on bead fibres or glass fibres and for other technical purposes. It is compatible with bitumens.
● For surface treatment of the fabric providing its further use in epoxy and polyester resin, is used the finishing solution prepared from Duvilax H, respectively. KA-31.
● Duvilax KA-31 is used to make a solution for emulsion mats. It can be added to the finishing solutions in order to increase the solubility of the surface of impregnated fabric in styrene.

Hardening of textiles

The hardening of textiles made of natural or synthetic fibers is particularly important in terms of their further use (manufacture of non-woven technical textiles, floor coverings and geotextiles).

Some types of textile and industrial fabrics (such as felt and non-woven flooring, etc.) are hardened in a solution from Duvilax BD-20, Duvilax B or both. The decision which sort to use, eventually establishing the mutual proportion depends on the requisite final "hardness", sort of web and fibre. For this purpose are used various modifications of Duvilax B and BD-20 varying in viscosity, dry mater and content and type of the softener. These materials are designed for hardening of textiles directly by the product as final treatment.

Self-adhesive (permanently sticky) insulating fabrics

Duvilax KA-4 and its modified adhesive with higher cohesion, Duvilax KA-4 +, is characterized by the ability to produce a permanently sticky film on various surfaces.
This feature is used on insulating textiles glued to car interiors, door panels, under car bonnets, luggage compartments, etc. Duvilax is applied to the fabric either directly, e.g. through the sieve or indirectly applied to the separating foil. After application, it is allowed to dry completely.