SIST EN 14979:2006

Overview

EN 14979:2006 is a CEN European Standard that defines the dimensions and tolerances of the S 13 nozzle used on cylindrical flexible plastic/metal laminate tubes. It applies to tubes for pharmaceutical, cosmetic, hygiene, food and other domestic or industrial products and ensures consistent nozzle geometry for compatibility with caps, filling equipment and sealing processes.

Key topics and technical requirements

• Scope: Measurements and tolerances exclusively for the S 13 nozzle configuration on flexible laminated tubes.
• Defined terms: Includes nozzle geometry identifiers such as ØA (outside thread diameter), ØB (outside nozzle diameter), C (nozzle height), ØD / ØD1 / ØD2 (neck/neck-ring diameters), E (distance to thread entrance), F (neck ring height), G (shoulder angle).
• Dimension tables: Prescribes nominal dimensions and tolerances for two tube size groups (tube diameters < 22 mm and > 25 mm) and for two configurations:
  • Without rondelle (standard nozzle): example values include ØA 13.0 ± 0.2 mm, ØB 11.4 ± 0.2 mm, C 11.2 ± 0.5 mm, neck ring diameter ØD 13.5 ± 0.2 mm (<22 mm) or **15.2 ± 0.2 mm** (>25 mm), F 1.2 ± 0.2 mm, G 30° ± 0.5°, E > 0.8 mm.
  • With external rondelle: provides ØD1 and ØD2 values (for example ØD1 13.5 ± 0.1 mm / ØD2 13.9 ± 0.1 mm for <22 mm tubes; larger values for >25 mm).
• Materials: Typical material is polyethylene (PE) in various compositions; other plastics may be used by agreement between supplier and customer.
• Normative references: Relies on EN 12374 (Flexible tubes - Terminology) and refers to EN 13461 for related tube dimensions.

Applications and who uses this standard

• Tube manufacturers and converters: to design and produce S 13 nozzles with correct tolerances for interchangeability.
• Packaging engineers and cap designers: to ensure cap fit, sealing integrity and thread compatibility.
• Quality control and inspection teams: to verify conformance to dimensional tolerances during production and incoming inspection.
• Filling-line equipment designers and OEMs: to guarantee nozzle compatibility with automated filling and capping machinery.
• Procurement and regulatory teams: to specify compliant components for pharmaceutical, cosmetic, food and hygiene products.

Related standards

• EN 12374:1998 - Packaging - Flexible tubes - Terminology
• EN 13461 - Packaging - Cylindrical flexible laminated tubes - Dimensions and tolerances (related tube specifications)

Using EN 14979:2006 helps ensure consistent S 13 nozzle geometry across suppliers, improves cap/closure compatibility, and reduces assembly and sealing failures in flexible laminated tube packaging.