PDF | 2.8 MB - Wacker Chemie
PDF | 2.8 MB - Wacker Chemie
PDF | 2.8 MB - Wacker Chemie
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vAE – ThE TEChNOLOGY dEfINING<br />
TOdAY ANd ShApING TOMORROW<br />
WACKER developed VAE technology<br />
in the mid-60s and began industrial<br />
scale production in 1966. Today,<br />
WACKER still pioneers the technology’s<br />
development and is responsible<br />
for one of the largest share of global<br />
VAE production.<br />
6<br />
The High-Performance Choice<br />
Vinyl acetate-ethylene (VAE) technology is<br />
increasingly replacing other technologies<br />
due to the continuous refinement of its<br />
core benefits, which include high adhesion,<br />
broad formulation flexibility, high<br />
setting speed and excellent cost-in-use.<br />
Recent developments in the VINNAPAS ®<br />
range have extended its applicability<br />
beyond the traditional paper and packaging,<br />
wood working, flooring and construction<br />
markets to new markets, such as<br />
pressure-sensitive labeling and automotive<br />
adhesives.<br />
The VINNAPAS ® range offers a broad<br />
selection of products to enable adhesives<br />
manufacturers to formulate the right balance<br />
of cost and performance for their<br />
end-customer’s adhesive application.<br />
Designed with Market-Leading Insight<br />
Due to their copolymer composition, vinyl<br />
acetate-ethylene copolymer dispersions<br />
enable the formulation of adhesives with<br />
low migration potential and reduce or<br />
avoid the need for a film-forming agent.<br />
VINNAPAS ® dispersions are stabilized<br />
with colloid systems and/or surfactant<br />
systems. The most common colloid<br />
system used in adhesive applications is<br />
poly(vinyl alcohol), a large water-soluble<br />
molecule. It provides the optimum<br />
rheology for a wide range of adhesive<br />
applications, e.g. paper and packaging<br />
applications.<br />
Surfactant stabilized dispersions typically<br />
show higher shear thinning than PVOH<br />
stabilized dispersions. Their advantages<br />
include better adhesion to plastics,<br />
clearer films, higher water resistance<br />
and good spray ability.<br />
Superior Properties Enabling<br />
Long-Lasting Adhesives<br />
VINNAPAS ® VAE dispersions feature an<br />
excellent adhesion and cohesion balance<br />
as well as high degrees of wet tack. In<br />
addition, they bond to a wide variety of<br />
substrates. Specific VINNAPAS ® products<br />
also offer the advantage of being suitable<br />
for both roller applications and the nozzle<br />
technology that is replacing the roller<br />
technology in many markets.<br />
Environmental and Health Impact<br />
All of our VINNAPAS ® dispersions for<br />
the adhesives market are water-based,<br />
and produced without organic solvents<br />
or plasticizers. Furthermore, APEO<br />
surfactants are not used as stabilizers<br />
in the adhesive dispersion range. These<br />
characteristics put them in line with evertightening<br />
consumer health legislation,<br />
especially for food packaging, – in this<br />
sector, the migration of constituents from<br />
packaging materials into food is under<br />
intense scrutiny.