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5028

5028

Detailed description

5028 is a water-based polyvinyl acetate (PVA) suitable for internal & external joinery, laminating and veneering applications (for larger panel work see 5028LV). Used to bond a wide variety of wood & wood-based products such as exterior furniture, windows, doors, kitchen/bathroom furniture  where BS EN204 Part 3 specification is required. Ideal for bonding of HPL to wood-based panel stock.

  • Suitable for application by all types of manual or machine type adhesive roller coater systems.
  • Suitable for hot or cold pressing applications.
  • Compatible for RF, Infra Red or UV drying processes.

Properties

  • Fast setting - excellent initial tack with a relatively short open time.
  • Highly water resistant glue line - meets BS EN 204 Part D3.
  • High bond strength - fast rate of bond strength developed - exceeds BS 4071.
  • One part self cross-linking grade.
  • Dries to a transparent glue line.
  • Clean surplus uncured adhesive with warm water.

Packaging

Available in 5kg - 25kg - 125kg - 1000kg containers

Storage

  • Store above 10C
  • Protect from frost - irreparable damage caused if allowed to freeze.
  • Rotate stocks regularly & use oldest batch first.
  • Shelf life is between 6 - 12 months if store in ideal conditions.

Technical specification

  • Composition of polyvinyl acetate adhesive
  • 45 - 48% solid content
  • Viscosity 80 - 150 P (8000 - 15000 mPas) Brookfield RVF 20rpm @25C
  • Coverage 5 - 6 square metres per kg (hand applied).
  • Coverage when mechancially applied in excess of 10 square metre per kg.

Surface preparation & application

  • All surface must be free from dust, dirt & free from any surface contaminants liable to impere adhesion.
  • Condition both adhesive & substrates in workshop prior to bonding.
  • Ideally stored above 10C.
  • Stir well before use & apply adhesive to one surface in a uniform coating by using brush, roller or mechanical roller as required.
  • Assembly & pressing must be made as soon as possible whilst adhesive is still wet. Avoid excessive periods of exposure to air as adhesive can 'skin over' prior to pressing.
  • Depending on type of work required (i.e laminating, veneering, structural) mechanical pressing of around 20 - 100psi should always be used to ensure overall contact between surfaces.
  • Pressing cycles can be relatively short provided the substrates are left undistrubed for further development of bond strength. Alternatively RF or hot or warm pressing will enhance cure rates.
  • Maximum bond strength is obtained over a period of at least 24 hours.