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Alpha Adhesives and Sealants Ltd A318 Water-Based Acrylic Adhesive

Alpha Adhesives and Sealants Ltd A318 Water-Based Acrylic Adhesive is an acrylic pressure sensitive emulsion that, when dry, exhibits aggressive tack coupled with high shear resistance & good peel strength. Alpha A318 is used for the manufacture of self adhesive labels & adheres well to plasticised & unplasticised PVC, polyester & electrically treated films of polyolefins without the need of a primer. A318 is used as a pressure sensitive adhesive on a variety of substrates including wood, metal & plastic.

Product Type: Pressure Sensitive Adhesive, Waterborne Adhesive

Compatible Substrates & Surfaces: Metal, Plastics, Polyesters, Polyvinyl Chloride (PVC), Wood

Chemical Family: Acrylics & Acrylates

Features: Good Peeling Strength, Tacky, Water Resistant

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Identification & Functionality

Chemical Family

Features & Benefits

Ready-to-Use Product Features
Key Information
  • Excellent tack
  • Good aging properties and resistant to water and plasticiser migration
  • Easy and safe to use
  • Environmentally friendly

Applications & Uses

Typical Applications

Alpha A318 Acrylic Adhesive is suitable for the following applications:

  • Pressure sensitive adhesive applications
  • Manufacture of self adhesive labels
  • Bonds well to PVC (plasticised or unplasticised), Polyester and Polyolefins
Handling & Applications

The general application information presented here is based upon typical conditions determined by Alpha Adhesives & Sealants testing. Our recommendations on the use of this product are based on methods believed to be reliable. It is advised that users conduct their own tests to determine the suitability of the product for their specific application.

Surface Preparation

All substrates must be clean of any dust, grit, loose material, wax, grease and oil. Irregularities in the surfaces to be bonded should be smooth to present the flattest possible surface for bonding.

Adhesive Application

The following application method should only be used as a guideline. It is advised that the user conducts preliminary tests to ensure they are using the adhesive correctly for their own purpose.

  1. Stir adhesive before use.
  2. Using a brush and spreader, apply an even coating of adhesive to one of the surfaces that is to be bonded.
  3. Allow the adhesive to dry to a clear appearance before bonding the materials (touch dry). The time for this drying will depend on the temperature and humidity. Alpha A318 can be dried at 70°C, reducing the open joint time accordingly.
  4. Bond the materials under firm, even pressure across the total bonded area.
  5. Allow the final coat to achieve a touch dry state. Assemble the bond and consolidate with pressure to assure a good contact across the bond line. The use of a nip-roller is preferred for ensuring optimum contact is achieved across the bonded area.

Curing

Bonded assemblies should not be moved during curing of the adhesive. The immediate high contact bond strength increases appreciably within the next 48 hours and will develop still further in service. For the best performance, leave at room temperature for 7 days.

Cleaning

For wet adhesive: warm soapy water should be used. For dried adhesive: Cleaner T559 TF should be used to remove residues from surfaces.

Properties

Physical Form
Base
Acrylic
Consistency
Liquid
Typical Properties
ValueUnitsTest Method / Conditions
Specific Gravity (20°C, 60% RH)1.02--
Total Solids Content52.5 - 55.5%-
Viscosity (20°C, 60% RH)11,000 - 14,000cP-
Open Joint Time10 - 30hours-
Cure Time7.0Days-
Application Temperature15 - 35°C-
Coverage3.5 - 4.5tyres / litre-

Regulatory & Compliance

Certifications & Compliance

Technical Details & Test Data

Product Performance

The performance data presented here has been determined by Alpha Adhesives & Sealants standard test methods and are average values that should not be used for specification purposes. Our recommendations on the use of this product are based on tests believed to be reliable. It is advised that users conduct their own tests to determine the suitability of the product for their specific application.

Test Substrates

Results/Observations

180° Peel Adhesion Test Leather Cloth to Wood 15 N/50mm

Safety & Health

Health & Safety Information

Alpha A318 Acrylic Adhesive is classified as non-hazardous according to Directive EC 1272/2008. Please refer to the Alpha A318 Acrylic Adhesive Safety Data Sheet for further health & safety information.

Packaging & Availability

Packaging Type
Product Availability
Product Reference Pack Size Container Box Quantity
A318 25 L Bucket N/A
A318 205 L Drum N/A

Storage & Handling

Storage

Alpha A318 Acrylic Adhesive should be stored in its original container, with the lid tightly secured, in dry conditions and at temperatures between 5°C and 25°C. Alpha A318 Acrylic Adhesive will keep satisfactorily for up to 18 months from date of manufacture if stored according to the recommended conditions.