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Wacker to Showcase Water-based Polymer Binders for Nonwovens at INDEX 2011

Published on 2011-04-13. Author : SpecialChem

Munich -- At INDEX 2011, the Munich-based WACKER Group will showcase a wide range of water-based polymer binders for coating and modifying high-quality textiles and nonwovens. The focus will be on VINNAPAS® and VINNOL® copolymer dispersions based on vinyl acetate-ethylene (VAE) and ethylene-vinyl chloride (E-VC). The product portfolio ranges from binders for articles of everyday use, such as tableware, cleaning cloths or hygiene products, to fabrics for blinds and upholstery, through to dispersions for wallpapers and carpet tiles. Among WACKER's tradeshow innovations are a novel hydrophobic dispersion for the manufacture of low discolorating nonwoven wall coverings and an innovative binder for flame-resistant textiles. INDEX 2011, a leading tradeshow for nonwovens, fibers and bonded fabrics, runs from April 12 to 15 in Geneva, Switzerland.

Water-based dispersions are an indispensable starting material in the manufacture of nonwovens and technical textiles. Articles of everyday use, such as vacuum cleaner bags, wet wipes, panty liners and materials for blinds, owe their very existence to high-performance binders. WACKER offers an extensive portfolio of technically mature and versatile VINNAPAS® und VINNOL® dispersions.

Low discoloring and Water Repellent: VINNAPAS® LL 1044

At INDEX 2011, WACKER will premiere VINNAPAS® LL 1044, a fast-self-curing VAE-based copolymer dispersion. Thanks to its hydrophobic properties, VINNAPAS® LL 1044 boasts outstanding dry and wet tensile strength. The dispersion also shows high mechanical stability while retaining a pleasantly soft hand. Compelling properties of nonwovens and textiles manufactured with VINNAPAS® LL 1044 are their minimal loss in brightness after drying and their high UV stability.

The dispersion is thus especially suitable for the production and further processing of nonwovens and fibrous materials where the end products must show as little discoloring as possible. Another advantage is that the dispersion is produced without the use of alkylphenol ethoxylates (APEOs), and contains very low levels of formaldehyde and vinyl acetate monomer (VAM).

The versatility of VINNAPAS® LL 1044 is also evidenced by its broad range of applications: it can be applied equally well by spraying and impregnating as by foaming or roller application. VINNAPAS® LL 1044 is thus an ideal binder for applications such as nonwoven wallpapers, textile wall coverings and technical textiles.

VINNOL® CEN 2752

Another innovation at INDEX 2011 is VINNOL® CEN 2752, an aqueous E-VC dispersion of a vinyl chloride - ethylene copolymer, used for coating modern textiles and nonwovens. The high proportion of vinyl chloride in the base polymer makes it especially suitable for flame-retardant finishing of textiles such as upholstery fabrics and sun-protection articles, e.g. sunshades and blinds, used in the domestic and commercial sectors.

The new dispersion adheres reliably and permanently to cellulose as well as to synthetic fibers and polyvinyl chloride (PVC) coatings. Furthermore, it has a high wet strength, a stable viscosity, and good wash resistance. The dispersion is easy to apply by a variety of methods, for example by spraying, impregnating or foaming. It can also be used for adhesive bonding of PVC to cardboard, paper and fiber materials.

The product is plasticizer-free and contains less formaldehyde than conventional self-crosslinking vinyl chloride copolymer dispersions. VINNOL® CEN 2752 is thus ideally suited as a binder for soft nonwovens and as a coating for woven and knitted fabrics, particularly for modern flame-retardant textiles. Typical applications include coating of upholstery, floor coverings such as PVC and needled felt or for heat-sealable wadding materials.

VINNAPAS® and VINNOL® for Sophisticated Textiles and Technical Nonwovens

VINNAPAS® and VINNOL® dispersions confer optimal properties such as excellent wet and dry strength, pleasant feel, good shape retention, absorbency and solvent resistance on tableware, wet wipes and feminine hygiene articles. VINNAPAS® dispersions, moreover, can also be efficiently processed and easily applied to nonwovens by all key application methods - whether by impregnating, spraying or foaming. They are furthermore low-odor products and are manufactured without the use of alkylphenol ethoxylates (APEO).

Coating with VINNAPAS® or VINNOL® dispersions as part of the textile finishing process imparts enhanced user properties, such as flame retardancy, dimensional stability and abrasion and wash resistance. The dispersions' high degree of versatility permits a wide range of applications, from roller blinds and furniture coverings to wall coverings. Nonwovens and textiles coated with VINNOL® dispersions based on E-VC copolymers show high chemical resistance and can be very successfully heat sealed or high-frequency welded. In technical nonwovens, VINNOL® dispersions improve important properties for filters, such as tensile strength, stiffness and pleatability. Aside from their neutral odor, VINNAPAS® VAE copolymer dispersions are also highly resistant to plasticizer migration, so that PVC carpet tiles remain permanently flexible and resistant.

About Wacker

WACKER is a pioneer of VAE technology with more than 70 years' experience in this field. It is a global leader in the production of binders and polymer additives.

Source: Wacker


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