oSIST prEN 15385:2026

Packaging - Flexible laminate and extruded plastic tubes - Test methods to determine the strength of the head welding

This document specifies a method for the determination of the strength of the head welding of flexible laminate and extruded plastic tubes.
It is applicable to flexible laminate and extruded plastic tubes packaging applications.

Packmittel - Laminattuben und extrudierte Kunststofftuben - Prüfverfahren zur Bestimmung des Festigkeit der Kopfnaht

Dieses Dokument legt ein Verfahren zur Bestimmung der Festigkeit der Kopfnaht von flexiblen Laminattuben und extrudierten Kunststofftuben fest.
Es ist für Packanwendungen für flexible Laminattuben und extrudierte Kunststofftuben anwendbar.

Emballages - Tubes souples laminés et tubes plastiques extrudés - Méthodes d'essai pour déterminer la résistance de la soudure de la tête

Le présent document spécifie une méthode de détermination de la résistance de la soudure de la tête des tubes souples en plastique laminés et extrudés.
Il est applicable aux tubes souples laminés et extrudés en plastique utilisés dans l'emballage.

Embalaža - Fleksibilne laminatne in ekstrudirane plastične tube - Preskusne metode za ugotavljanje trdnosti zvarov

Ta evropski standard določa metodo za določanje trdnosti zvarov glave fleksibilnih laminatnih in ekstrudiranih plastičnih cevi.
Uporablja se za fleksibilne laminatne in ekstrudirane plastične cevi za embalažne aplikacije.

General Information

• Status: Not Published
• Public Enquiry End Date: 02-Jul-2026
• ICS: 55.120 - Cans. Tins. Tubes
• Technical Committee: EPO - Packaging - sales and grouped
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 22-Apr-2026
• Due Date: 09-Sep-2026
• Ref Project: prEN 15385 - Packaging - Flexible laminate and extruded plastic tubes - Test methods to determine the strength of the head welding

Relations

• Revises: SIST EN 15385:2008 - Packaging - Flexible laminate tubes - Test methods to determine the strength of the head welding
• Effective Date: 21-May-2025

Overview

oSIST prEN 15385:2026:2026 - Packaging – Flexible Laminate and Extruded Plastic Tubes – Test Methods to Determine the Strength of the Head Welding is a draft European Standard developed by CEN/TC 261. This standard defines the procedure for testing the head welding (shoulder-to-body joint) strength in flexible laminate and extruded plastic tubes, which are widely used in packaging applications across multiple industries.

The standard supersedes EN 15385:2007 and incorporates key technical updates to improve applicability and reliability, especially with the inclusion of extruded plastic tubes.

Key Topics

• Test Purpose and Scope
  • Focuses on measuring the bond strength at the head weld, vital to the integrity of flexible laminate and extruded plastic tubes.
  • Ensures that packaging solutions comply with safety, quality, and performance requirements relevant to manufacturers and end-users.
• Test Equipment
  • Use of a precision cutting device to prepare sample strips from the tubes.
  • Application of a tensile/compression tester to measure the strength required to separate the tube's body from the shoulder.
• Test Procedure
  • Defined method for preparing samples based on tube width or shape.
  • Specific instructions for applying force and evaluating whether the weld meets the minimum strength threshold.
• Test Reporting
  • Clear guidance on what data must be recorded, supporting transparency and traceability in packaging quality assurance.
  • Requirements for documenting batch details, test results, and other relevant factors.

Applications

The procedures outlined in oSIST prEN 15385:2026:2026 are directly applicable to:

• Manufacturers of Packaging Tubes: Assurance of weld strength is crucial for quality control during production of toothpaste tubes, cosmetic tubes, pharmaceutical tubes, and food packaging tubes made from flexible laminate or extruded plastics.
• Packaging Designers and Engineers: Helps guide material selection and welding processes to ensure compliance with market and regulatory expectations.
• Quality Assurance and Testing Laboratories: Provides standardized methods to evaluate and certify tube integrity for customers and regulatory bodies.
• Brand Owners and Retailers: Reassures that products are safe from leaks, contamination, or integrity failures during transport and use.

Related Standards

For broader context and harmonized implementation, consider these closely associated packaging standards:

• EN 12374: Packaging – Flexible tubes – Terminology
  Provides standard definitions relevant to flexible tube packaging.
• EN 13461: Packaging – Cylindrical flexible laminated tubes – Dimensions and tolerances
  Details dimensional and tolerance requirements crucial for tube standardization and compatibility.
• EN 13045: Packaging – Flexible cylindrical plastic tubes – Dimensions and tolerances
  Specifies requirements for cylindrical plastic tubes, ensuring consistency and interoperability across manufacturing.

Practical Value

By standardizing the testing method for tube head welding strength, oSIST prEN 15385:2026:2026 supports:

• Consistency in Product Quality: Enabling reliable fabrication and validation of packaging tubes.
• Compliance with Regulatory Requirements: Assisting companies in meeting European and international packaging standards.
• Enhanced Consumer Safety: Reducing the likelihood of packaging failures, protecting both contents and end-users.
• Facilitated Trade: Supporting mutual recognition of test results across member states and industries.

Manufacturers, quality auditors, and designers adopting oSIST prEN 15385:2026:2026 will benefit from clearer quality benchmarks and more robust packaging solutions in increasingly demanding global supply chains.

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2026
Embalaža - Fleksibilne laminatne in ekstrudirane plastične tube - Preskusne
metode za ugotavljanje trdnosti zvarov
Packaging - Flexible laminate and extruded plastic tubes - Test methods to determine
the strength of the head welding
Packmittel - Laminattuben und extrudierte Kunststofftuben - Prüfverfahren zur
Bestimmung des Festigkeit der Kopfnaht
Emballages - Tubes souples laminés et tubes plastiques extrudés - Méthodes d'essai
pour déterminer la résistance de la soudure de la tête
Ta slovenski standard je istoveten z: prEN 15385
ICS:
55.120 Pločevinke. Tube Cans. Tins. Tubes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2026
ICS 55.120 Will supersede EN 15385:2007
English Version
Packaging - Flexible laminate and extruded plastic tubes -
Test methods to determine the strength of the head
welding
Emballages - Tubes souples laminés et tubes plastiques Packmittel - Laminattuben und extrudierte
extrudés - Méthodes d'essai pour déterminer la Kunststofftuben - Prüfverfahren zur Bestimmung des
résistance de la soudure de la tête Festigkeit der Kopfnaht
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 261.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15385:2026 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 Test equipment .
...