company tower banner
Wacker Chemie AG Company Logo

VINNAPAS® 323

VINNAPAS® 323 is a vinyl acetate-ethylene copolymer dispersion stabilized with polyvinyl alcohol and has a glass transition temperature (Tg) of +23 °C. It is specifically developed as a fast-setting and high-heat-resistant dispersion, offering compatibility with fully hydrolyzed PVOH. VINNAPAS® 323 is designed as a base for high-speed packaging applications. It demonstrates excellent wet tack, fast setting properties, and a moderate response to plasticizer thickening.

Brand: VINNAPAS (218 products)

Chemical Family: Vinyl Acetate Ethylene (VAE) Copolymer

End Uses: Extrusion Coating

Compatible Substrates & Surfaces: Paper

Glass Transition Temperature (Tg): 23.0 - 23.0 °C

Features: Fast Setting, Improved Cohesion, Low Migration, Tack-free, Water Resistance

Technical Data Sheet
Enhanced TDS

Enhanced TDS

Knowde-enriched technical product data sheet

Identification & Functionality

CASE Ingredients Functions
Technologies

Features & Benefits

Labeling Claims

Applications & Uses

Application Method
Compatible Substrates & Surfaces
Coating Type
Applications
  • Paper Packaging & Converting
  • Building Components
  • Flooring Installation
Application Details
  • VINNAPAS® 323 is a versatile base for the adhesive formulator. This dispersion is compatible with other poly(vinyl alcohol) and surfactant stabilized vinyl acetate-based dispersions and acrylic copolymers. It is compatible with rubber latices, water based urethane dispersions, solvents, plasticizers, and other modifiers.
  • Water resistance can be improved when formulated with fully hydrolyzed poly(vinyl alcohol) with which it is compatible, plasticizers, solvents, or crosslinking agents.
  • VINNAPAS® 323 is a versatile base for adhesive formulators with the rheology that makes it suitable for use in a variety of high speed packaging applications such as corrugated case sealing. With good water resistance, it is suited for but not limited to applications such as bag seams, corrugated case forming and sealing, carton forming, and cup forming.
  • Strong wet tack allows this dispersion to be used in collating. The combination of heat resistance and water resistance makes VINNAPAS® 323 a solid ingredient in adhesive formulations designed for laminations of porous substrates, e.g., paper or board to wood products.

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Density1.05g/cm³Specific method
Dry TackNone-Specific method
Film ClaritySlightly hazy-Specific method
FlexibilityFair-Specific method
Glass Transition Temperatureapprox. 23 °CDSC, Specific Method
Mechanical StabilityExcellent-Specific method
Protective Colloid (Emulsifier System)Polyvinyl alcohol--
Thickening ResponseMedium-Specific method
Water ResistanceHigh-Specific method
Wet TackHigh-Specific method
Specifications
ValueUnitsTest Method / Conditions
Dynamic Viscosity (at 25°C)1300 - 2300 mPa·sSpecific method
Grit (100 Mesh)max. 50ppmSpecific method
pH5.0 - 6.0-Specific method
Solids Content54.0 - 56.0 %Specific method
Properties
  • VINNAPAS® 323 is designed for use as a base for high-speed packaging applications. It exhibits excellent wet tack, speed of set and medium plasticizer thickening response.
  • Because of its poly(vinyl alcohol) stabilization and excellent mechanical stability, this dispersion can be used in a variety of roll, extruder, or spray applications.
  • The dry film is tack free and heat sealable. This dispersion is compatible with both fully and partially hydrolyzed alcohol.
  • The very good water resistance can be enhanced when the dispersion is compounded with fully hydrolyzed alcohol. Having the highest Tg, this dispersion exhibits the highest heat resistance, high tensile strength, and moderate flexibility.

Packaging & Availability

Packaging Type
Regional Availability
  • Latin America
  • North America

Storage & Handling

Shelf Life
9 Months
Storage Information
  • When the dispersion is stored in tanks, proper storage conditions must be maintained. If stored in the original, unopened containers at cool (below 30 °C), but frost-free temperatures the product has a shelf life of 9 months from the date of manufacture.
  • Iron or galvanized-iron equipment and containers are not recommended because the dispersion is slightly acidic. Corrosion may result in discoloration of the dispersion or its blends when further processed. Therefore, the use of containers and equipment made of ceramics, rubberized or enameled materials, appropriately finished stainless steel, or plastic (e.g. rigid PVC, polyethylene or polyester resin) is recommended.
  • As polymer dispersions may tend to superficial film formation, skins or lumps may form during storage or transportation. Filtration is therefore recommended prior to utilization of the product.


Preservation for Transport, Storage and further Processing

  • The product is adequately preserved during transportation and storage if kept in the original, unopened containers. However, if it is transferred to storage tanks, the dispersion should be protected against microbial attack by adding a suitable preservative package.
  • To maintain proper storage conditions appropriate measures should also be taken to ensure cleanliness of the tanks and pipes. In a storage tank in which the product is not stirred, it is advisable to contact your biocide representative/supplier.
  • Proper procedures must be set up in order to prevent microbial attack between necessary periodic tank cleaning and sanitization. These procedures will vary, since loading and unloading practices in each storage situation will differ slightly. Finished products manufactured from polymer dispersions usually also require preservation. The type and scope of preservation will depend on the raw materials used and the anticipated sources of contamination.
  • The compatibility with other components and the efficacy of the preservative should always be tested in the respective formulation. Preservative manufacturers will be able to advise you about the type and dosage of preservative required.