EN 15421:2021

Packaging - Flexible aluminium tubes - Determination of the adhesion of the internal and external protective lacquering

This document specifies a method for the determination of the adhesion of the internal and external protective lacquer of aluminium tubes.
It is applicable to aluminium tubes that are coated with an internal or external protective lacquer and which are used for packing, e.g. pharmaceutical, cosmetic, hygiene, food and other household products.

Packmittel - Aluminiumtuben - Bestimmung der Haftfestigkeit des Innen- und Außenschutzlackes

Dieses Dokument legt ein Verfahren zur Bestimmung der Haftfestigkeit des Innen- und Außenschutzlackes von Aluminiumtuben fest.
Es gilt für Aluminiumtuben, die mit einem Innen- oder Außenschutzlack beschichtet sind und die für die Verpackung von Produkten, z. B. in der Pharmazie, der Kosmetik, der Hygiene sowie für Lebensmittel und andere Haushaltsprodukte, verwendet werden.

Emballage - Tubes souples en aluminium - Détermination de l'adhérence des vernis de protection intérieure et extérieure

Le présent document spécifie une méthode de détermination de l’adhérence des vernis de protection intérieure et extérieure des tubes en aluminium.
Il s’applique aux tubes en aluminium qui sont revêtus d’un vernis de protection intérieure ou extérieure et qui sont utilisés pour emballer des produits pharmaceutiques, cosmétologiques, alimentaires, des produits d’hygiène et autres produits de première nécessité.

Embalaža - Prožne aluminijaste tube - Ugotavljanje adhezije notranjih in zunanjih zaščitnih lakov

Ta standard določa metodo za ugotavljanje adhezije notranjega in zunanjega zaščitnega laka aluminijastih tub.
Uporablja se za aluminijaste tube, ki so prevlečene z notranjim ali zunanjim zaščitnim lakom ter so namenjene pakiranju farmacevtskih, kozmetičnih, higienskih, prehrambenih in drugih gospodinjskih izdelkov.

General Information

• Status: Published
• Publication Date: 26-Oct-2021
• Withdrawal Date: 29-Apr-2022
• ICS: 55.120 - Cans. Tins. Tubes
• Technical Committee: CEN/TC 261 - Packaging
• Drafting Committee: WG 39 - Flexible tubes
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 27-Oct-2021
• Due Date: 06-May-2022
• Completion Date: 27-Oct-2021
• Ref Project: SIST EN 15421:2022 - Packaging - Flexible aluminium tubes - Determination of the adhesion of the internal and external protective lacquering

Relations

• Replaces: EN 15421:2007 - Packaging - Flexible aluminium tubes - Determination of the adhesion of the internal and external protective lacquering
• Effective Date: 03-Nov-2021

Overview

EN 15421:2021 - Packaging - Flexible aluminium tubes - Determination of the adhesion of the internal and external protective lacquering is a CEN standard that specifies a laboratory method to assess the adhesion of protective lacquers on flexible aluminium tubes. The method applies to tubes used for pharmaceutical, cosmetic, hygiene, food and other household products where internal or external lacquer integrity is critical for product safety and performance.

Key Topics

• Scope and objective: Defines a repeatable test to detect cracks and delamination of internal and external protective lacquers on aluminium tubes.
• Principle: A compressing device creates a standardized, sharp-edged deformation (kink) in the tube; the tube is then stretched axially and inspected visually for lacquer failure.
• Apparatus: Two compressing device types are accepted:
  • Type 1 (uses an internal guide pin - ∅8 mm for tube diameters ≤19 mm; ∅15 mm for >19 mm).
  • Type 2 (uses an external guide ring).
• Procedure:
  • Type 1: Compress until the tube body is reduced to (15 ± 5) % of original length.
  • Type 2: Compress until the tube body is reduced down to the guide ring.
  • After compression and re-stretching, visually check for cracks or detached lacquer; presence of either is a failure.
• Test conditions: Standard testing at (23 ± 5) °C. For products stored/used at cold conditions, samples must be conditioned at (5 ± 3) °C for at least 2 hours and tested immediately after removal.
• Reporting requirements: Test reports must reference EN 15421:2021 and include batch identification, sample description, lacquer nature, test temperature, number of samples, defect description, acceptance decision and testor/date/place.

Applications

• Quality control and incoming inspection of flexible aluminium tubes used in pharmaceutical, cosmetic, food, and household packaging.
• Production process validation of internal/external protective lacquering to prevent contamination, corrosion and preserve product shelf life.
• Supplier qualification, failure analysis and regulatory compliance testing where lacquer adhesion is a critical performance attribute.
• Used by packaging manufacturers, coating formulators, quality labs, regulatory bodies and R&D teams developing tube coatings.

Related Standards

• EN 12374 - Packaging - Flexible tubes - Terminology
• EN 13046 - Packaging - Flexible cylindrical metallic tubes - Dimensions and tolerances
• EN 13047 - Packaging - Flexible conical metallic tubes - Dimensions and tolerances

Keywords: EN 15421:2021, flexible aluminium tubes, adhesion test, protective lacquering, aluminium tube testing, packaging standard, compressing device, lacquer adhesion.

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2022
Nadomešča:
SIST EN 15421:2008
Embalaža - Prožne aluminijaste tube - Ugotavljanje adhezije notranjih in zunanjih
zaščitnih lakov
Packaging - Flexible aluminium tubes - Determination of the adhesion of the internal and
external protective lacquering
Packmittel - Aluminiumtuben - Bestimmung der Haftfestigkeit des Innen- und
Außenschutzlackes
Emballage - Tubes souples en aluminium - Détermination de l'adhérence des vernis de
protection intérieure et extérieure
Ta slovenski standard je istoveten z: EN 15421:2021
ICS:
55.120 Pločevinke. Tube Cans. Tins. Tubes
77.150.10 Aluminijski izdelki Aluminium products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 15421
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2021
EUROPÄISCHE NORM
ICS 55.120 Supersedes EN 15421:2007
English Version
Packaging - Flexible aluminium tubes - Determination of
the adhesion of the internal and external protective
lacquering
Emballage - Tubes souples en aluminium - Packmittel - Aluminiumtuben - Bestimmung der
Détermination de l'adhérence des vernis de protection Haftfestigkeit des Innen- und Außenschutzlackes
intérieure et extérieure
This European Standard was approved by CEN on 30 August 2021.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15421:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principle. 4
5 Apparatus . 4
6 Test conditions . 6
7 Procedure . 6
7.1 Type 1 . 6
7.2 Type 2 . 7
8 Test report . 7
Bibliography . 8

European foreword
This document (EN 15421:2021) has been prepared by Technical Committee CEN/TC 261 “Packaging”,
the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by April 2022, and conflicting national standards shall be
withdrawn at the latest by Apri
...