SIST EN 15384-2:2017

Packaging - Test method to determine the porosity of the internal coating of flexible aluminium tubes - Part 2: Copper sulphate test

This European Standard is applicable for internally coated cylindrical aluminium tubes, mainly used for the packing of pharmaceutical, cosmetic, hygiene, food or other household products.
The internal coating is used as a barrier and should avoid any contact between aluminium and the product. This European Standard defines the copper sulphate method to detect the electrolyte conductivity as one criterion for the quality of the internal coating.
NOTE   The electrolyte conductivity of the internal coating is only one criterion for evaluation of the quality of an internal coating. It does not give any information on the quantity or size of any pores or uncoated areas, nor any hint on possible reactions between the aluminium tube and the product. The electrolyte conductivity is never used as the sole criterion for quality evaluation of the internal coating, but always with other parameters, e.g. film thickness, acetone and/or ammonia resistance and of course results of enhanced stability studies.

Packmittel - Prüfverfahren zur Bestimmung der Porosität der Innenbeschichtung von Aluminiumtuben - Teil 2: Kupfersulfatverfahren

Diese Europäische Norm gilt für innenbeschichtete zylindrische Aluminiumtuben, die überwiegend für die Verpackung von Produkten der Pharmazie, der Kosmetik, der Hygiene sowie von Lebensmitteln oder anderen Haushaltsprodukten verwendet werden.
Die Innenbeschichtung dient als Sperrschicht und sollte jeden Kontakt zwischen Aluminium und dem Produkt verhindern. Diese Europäische Norm legt das Kupfersulfatverfahren zur Bestimmung der elektrolytischen Leitfähigkeit als ein Kennzeichen der Qualität der Innenbeschichtung fest.
ANMERKUNG   Die elektrolytische Leitfähigkeit der Innenbeschichtung ist nur ein Kennzeichen zur Beurteilung der Qualität einer Innenbeschichtung. Sie gibt weder Informationen über Anzahl oder Größe von Poren oder unbeschichteten Flächen noch Hinweise auf mögliche Reaktionen zwischen Aluminiumtube und Produkt an. Die elektrolytische Leitfähigkeit dient nie als einziges Kennzeichen zur Qualitätsbeurteilung einer Innenbeschichtung, sondern immer gemeinsam mit anderen Kennwerten, wie z. B. Schichtdicke, Aceton  und/oder Ammoniakbeständigkeit und selbstverständlich Ergebnissen erweiterter Stabilitätsstudien.

Emballage - Méthode d'essai pour déterminer la porosité du revêtement intérieur des tubes souples en aluminium - Partie 2 : Essai au sulfate de cuivre

La présente norme est applicable aux tubes cylindriques en aluminium à revêtement intérieur, principalement utilisés pour emballer des produits pharmaceutiques, cosmétologiques, alimentaires, des produits d’hygiène et autres produits de première nécessité.
Le revêtement intérieur a pour fonction d’empêcher tout contact entre l’aluminium et le produit. La présente norme définit la méthode au sulfate de cuivre pour détecter la conductivité de l’électrolyte, qui est un critère de qualité du revêtement intérieur.
NOTE   La conductivité de l’électrolyte du revêtement intérieur n’est qu’un critère d’évaluation de la qualité d’un revêtement intérieur. Elle ne donne aucune information sur la quantité ou la taille d’éventuels pores ou zones non revêtues, ni sur les possibles réactions entre le tube d’aluminium et le produit. Il convient de ne jamais utiliser la conductivité de l’électrolyte comme seul critère d’évaluation de la qualité du revêtement intérieur, mais de toujours l’associer à d’autres paramètres, comme l’épaisseur du film, la résistance à l’acétone et/ou à l’ammoniaque, et, bien sûr, aux résultats des études de stabilité détaillées.

Embalaža - Preskusna metoda za ugotavljanje poroznosti notranjih prevlek prožnih aluminijastih tub - 2. del: Preskus z bakrovim sulfatom

Ta evropski standard se uporablja za cilindrične aluminijaste tube z notranjo prevleko, namenjene predvsem pakiranju farmacevtskih, kozmetičnih, higienskih, prehrambenih ali drugih gospodinjskih proizvodov.
Notranja prevleka se uporablja kot pregrada in preprečuje stik med aluminijem in proizvodom. Ta evropski standard določa metodo z bakrovim sulfatom za zaznavanje elektrolitske prevodnosti kot eno merilo za kakovost notranje prevleke.
OPOMBA: Elektrolitska prevodnost notranje prevleke je samo eno merilo za oceno kakovosti notranje prevleke. Ne podaja nobenih informacij o količini ali velikosti morebitnih por ali območij brez prevleke ter nobenih namigov o mogočih reakcijah med aluminijasto tubo in proizvodom. Elektrolitska prevodnost se nikoli ne uporablja kot edino merilo za oceno kakovosti notranje prevleke, ampak se vedno uporablja z drugimi parametri, npr. debelino premaza, odpornostjo na aceton in/ali amoniak, in rezultati študij večje stabilnosti.

General Information

• Status: Published
• Public Enquiry End Date: 30-Nov-2015
• Publication Date: 08-Aug-2017
• ICS: 55.120 - Cans. Tins. Tubes
• ICS: 77.150.10 - Aluminium products
• Technical Committee: EPO - Packaging - sales and grouped
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 31-Jul-2017
• Due Date: 05-Oct-2017
• Completion Date: 09-Aug-2017
• Ref Project: EN 15384-2:2017 - Packaging - Test method to determine the porosity of the internal coating of flexible aluminium tubes - Part 2: Copper sulphate test

Relations

• Replaces: SIST EN 15384:2008 - Packaging - Flexible aluminium tubes - Test method to determine the porosity of the internal coating
• Effective Date: 01-Sep-2017

Overview

SIST EN 15384-2:2017 is a European Standard developed by the European Committee for Standardization (CEN) that specifies a test method to determine the porosity of the internal coating of flexible aluminium tubes. This standard particularly focuses on the copper sulphate test, which evaluates the electrolyte conductivity of the tube’s internal coating. Internally coated aluminium tubes are widely used for packaging products in the pharmaceutical, cosmetic, hygiene, food, and household sectors. The internal coating functions as a barrier that prevents direct contact between the aluminium substrate and the packed product, ensuring product integrity and safety.

This standard is essential for manufacturers, quality control specialists, and packaging engineers aiming to assess the protective quality of the internal coating. The copper sulphate method helps detect potential flaws in the coating that could compromise the barrier, although it should always be used alongside other quality assessment parameters.

Key Topics

• Scope and Application: Designed for cylindrical aluminium tubes with internal coatings primarily used in packaging sensitive products.

• Copper Sulphate Test Principle:

  • Tubes are filled with a copper sulphate electrolyte solution.
  • The test applies a defined voltage using an enamel conductometer.
  • The measured electrical current indicates the electrolyte conductivity, directly related to porosity in the coating.

• Apparatus and Setup:

  • Enamel conductometer with a moveable copper electrode (positive pole).
  • Stainless steel adapter electrode connected to the aluminium tube (negative pole).
  • Specific electrolyte composition of copper sulphate pentahydrate, acetic acid, and a wetting agent.

• Test Procedure:

  • Precise filling and electrode placement ensure consistent measurements.
  • Voltage of 4,500 mV DC applied for 2.5 seconds.
  • Measurements recorded in milliamps (mA) indicating coating integrity.

• Tolerances and Limitations:

  • Defined tolerances based on tube diameter and internal coatings.
  • Recognizes that this test alone doesn’t reveal pore size or distribution.
  • Advises combining electrolyte conductivity data with film thickness, chemical resistance (acetone/ammonia), and stability studies for comprehensive quality assessment.

• Reporting Requirements:

  • Documentation includes test parameters, batch details, sample descriptions, equipment information, results, and inspector credentials.

Applications

• Quality Control in Packaging Manufacturing:
  SIST EN 15384-2:2017 supports routine testing of aluminium tube coatings to ensure barrier performance, reducing the risk of product contamination and degradation.

• Pharmaceutical Packaging Assurance:
  Ensures internal coatings meet strict standards to prevent drug-aluminium interactions and preserve medication efficacy.

• Cosmetic and Hygiene Product Safety:
  Helps verify coatings prevent metal contact with sensitive formulations, ensuring user safety and product longevity.

• Food Packaging Compliance:
  Confirms that internal coatings protect food products, maintaining freshness and preventing metallic taste or spoilage.

• Research and Development:
  Provides a standardized testing framework when developing new coating materials or optimizing production processes.

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
• ISO 2859-1: Sampling procedures for inspection by attributes – Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection

These standards complement SIST EN 15384-2:2017 by providing terminology, dimensional requirements, and sampling procedures critical for comprehensive packaging quality management.

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Keywords: SIST EN 15384-2:2017, copper sulphate test, aluminium tube porosity, internal coating test, packaging standards, electrolyte conductivity, flexible aluminium tubes, pharmaceutical packaging, cosmetic packaging, food packaging, coating quality assessment, enamel conductometer, CEN packaging standard.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Embalaža - Preskusna metoda za ugotavljanje poroznosti notranjih prevlek prožnih aluminijastih tub - 2. del: Preskus z bakrovim sulfatomPackmittel - Prüfverfahren zur Bestimmung der Porosität der Innenbeschichtung von Aluminiumtuben - Teil 2: KupfersulfatverfahrenEmballage - Méthode d'essai pour déterminer la porosité du revêtement intérieur des tubes souples en aluminium - Partie 2 : Essai au sulfate de cuivrePackaging - Test method to determine the porosity of the internal coating of flexible aluminium tubes - Part 2: Copper sulphate test77.150.10Aluminijski izdelkiAluminium products55.120Cans. Tins. TubesICS:Ta slovenski standard je istoveten z:EN 15384-2:2017SIST EN 15384-2:2017en,fr,de01-september-2017SIST EN 15384-2:2017SLOVENSKI
STANDARDSIST EN 15384:20081DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15384-2
January
t r s y ICS
w wä s t r Supersedes EN
s w u z vã t r r yEnglish Version
Packaging æ Test method to determine the porosity of the internal coating of flexible aluminium tubes æ Part
tã Copper sulphate test Emballage æ Méthode d 5essai pour déterminer la porosité du revêtement intérieur des tubes souples en aluminium æ Partie
t ã Essai au sulfate de cuivre
Packmittel æ Prüfverfahren zur Bestimmung der Porosität der Innenbeschichtung von Aluminiumtuben æ Teil
tã Kupfersulfatverfahren This European Standard was approved by CEN on
s v November
t r s xä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
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CEN-CENELEC Management Centre:
Avenue Marnix 17,
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t r s y CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s w u z væ tã t r s y ESIST EN 15384-2:2017
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