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ISO 4612:2018

Current Date published:

Plastics — Preparation of PVC pastes for test purposes — Planetary-mixer method

This document specifies two methods, A and B, for the preparation of pastes (also known as plastisols) from appropriate PVC resins, plasticizers and other ingredients using a planetary mixing process.

Both method A and method B can be used to prepare pastes of any composition. Method A (single-speed) is particularly applicable to resins prone to heat build-up during paste preparation, while method B (two-speed) might be preferred for repetitive work, e.g. for process control during resin manufacture, because of its shorter mixing time.

Such pastes can be used for a variety of test purposes, including the determination of rheological properties for resin designation and specification.

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Related Information

Similar Standards

  • BS 1524:1993

    Specification for cellulose acetate moulding materials

  • BS 2571:1990

    Specification for general-purpose flexible PVC compounds for moulding and extrusion

  • BS 2782-1:Method 130A:1991

    Methods of testing plastics. Thermal properties, Determination of the thermal stability of polyvinyl chloride by the Congo red method

  • BS 2782-1:Method 131B:1983

    Methods of testing plastics. Thermal properties, Determination of extensibility after heat ageing of flexible polyvinyl chloride sheet

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