ISO 6451:1982

Overview

ISO 6451:1982 specifies a rapid method for checking fusion of polyvinyl chloride (PVC) coatings on plastics coated fabrics. Intended as a quick screening test for PVC-coated textiles, the method identifies whether a PVC coating has adequately fused to the substrate. It is not suitable for coatings made from aqueous PVC dispersions.

Key topics and requirements

• Scope: Rapid fusion-check test for PVC coatings on coated fabrics (excludes aqueous dispersion PVC coatings).
• Reagents and apparatus:
  • Acetone, analytical grade.
  • Glass vessel large enough to hold test assemblies (can be covered).
  • Glass rod, diameter 5 mm.
  • Metal clips to secure test pieces.
• Test pieces:
  • Normally three test pieces per coated face.
  • Typical dimensions depending on thickness: 20 mm × 40 mm or 20 mm × 70 mm.
  • Take samples from center and from positions at least 200 mm from the edges; use six pieces when coated on both sides (three per face).
• Procedure (summary):
  • Visually inspect PVC layer for existing cracks/holes and record.
  • Fold each test piece over the 5 mm glass rod with the coating outward and secure with a metal clip.
  • Immerse assemblies in acetone at standard laboratory temperature for 15 minutes.
  • Remove and visually examine the bent area for new cracks or holes. Disregard lacquer removal or superficial surface effects.
• Interpretation and reporting:
  • If fresh cracks or holes appear in the bent area, fusion is incomplete (fail).
  • Test report must include reference to ISO 6451:1982, product identification, test temperature, result (fusion complete/incomplete), any deviations, date, and test-piece length.

Applications and users

ISO 6451:1982 is a practical, low-cost screening method used for:

• Quality control in manufacturing of PVC-coated fabrics (awnings, tarpaulins, upholstery, technical textiles).
• Incoming inspection by procurement teams to confirm coating integrity.
• R&D and material evaluation to quickly compare fusion quality across formulations or processes.
• Conformity checks in independent testing laboratories and by compliance officers.

Typical users: quality assurance technicians, lab analysts, materials engineers, textile/coating manufacturers, and buyers specifying coated-fabric performance.

Related standards

• ISO 6451:1982 was prepared by ISO/TC 45 (Rubber and rubber products). Other ISO standards on coated fabrics, PVC testing, and physical/chemical test methods may be relevant; consult the ISO catalogue or national standards bodies for related or successor standards.

Keywords: ISO 6451:1982, plastics coated fabrics, polyvinyl chloride coatings, PVC coating test, fusion test, acetone test, rapid method, coated fabrics testing, quality control.