EN ISO 24023-1:2020 PDF

Overview

EN ISO 24023-1:2020 - Plastics - Plasticized poly(vinyl chloride) (PVC‑P) moulding and extrusion materials - Part 1: Designation system and basis for specifications - establishes a standardized designation system for plasticized PVC thermoplastic materials. The standard provides the coding framework (identity and individual‑item blocks) that can be used as the basis for material specifications, enabling clear identification of PVC‑P grades for moulding and extrusion. It applies to plasticized homopolymers, copolymers and blends that contain at least 50% vinyl chloride by mass, supplied as powders (dry blends), granules or pellets. Cellular plastics and paste compositions (plastisols) are excluded.

Key Topics

• Designation system structure: standardized pattern comprising an identity block (e.g., symbol PVC‑P) and an individual‑item block subdivided into five data blocks.
  • Data block 1: Identification symbol - PVC‑P (per ISO 1043‑1).
  • Data block 2: Fillers/reinforcements and nominal content (not detailed in this part).
  • Data block 3: Intended application or processing method (position 1) and important properties/additives/colour (positions 2–8). Uses code letters (examples: B = Blow moulding, E = Extrusion, M = Injection moulding, T = Tape manufacture, N = Natural (no colour)).
  • Data block 4: Designatory properties - coded values for Shore hardness (2‑figure code), density (2‑figure code), and torsional‑stiffness temperature at 300 MPa (2‑figure code), separated by hyphens.
  • Data block 5: Optional additional requirements for alternative specifications or reproducible processing.
• Scope limits and applicability: covers plasticized PVC compositions ≥50% vinyl chloride; includes chlorinated PVC and specified blends; excludes cellular and plastisol forms.
• Clarification of intent: the standard provides designation and a basis for specification but does not supply engineering performance data or processing conditions. Additional properties, if required, are to be determined using ISO 24023‑2 test methods.

Applications and Who Uses It

• Material and compound manufacturers: to label and communicate PVC‑P grade identity and key designatory properties.
• Product designers and OEMs: to select appropriate PVC‑P grade descriptors for moulding and extrusion applications.
• Procurement and quality assurance teams: to create unambiguous purchase specifications and acceptance criteria.
• Test laboratories and conformity assessors: to interpret designation codes and reference ISO 24023‑2 for property testing.
• Standards bodies and regulatory organizations: to harmonize terminology and material classification across markets.

Practical benefits include improved material traceability, consistent supplier‑buyer communication, and a common basis for specifying PVC‑P for extrusion, injection moulding and related processing.

Related Standards

• ISO 1043‑1 - Symbols and abbreviated terms (basic polymers) - referenced for the PVC‑P symbol.
• ISO 24023‑2 - Preparation of test specimens and determination of properties - for test methods when extra properties are required.
• Supersedes earlier editions (ISO 2898‑1 series).

Keywords: EN ISO 24023‑1:2020, PVC‑P designation system, plasticized poly(vinyl chloride), thermoplastic materials, Shore hardness, density, torsional‑stiffness temperature, material specification.