EN 1720:1998

• Abstract:

  This European Standard specifies a method for the determining the dispersability of dry adhesive in a dispersing medium. The test can be applied to all types of adhesives covered by this series of standards and include soluble, dispersion and hot melt systems. The test is intended primarily as a comparative test for investigating the dispersability performance of different adhesives and should not be used to provide accurate data regarding the water resistance of the adhesives in their finished bonded state.

• Status: Published
• Publication Date: 22-Sep-1998
• Withdrawal Date: 30-Mar-1999
• ICS: 83.180 - Adhesives
• Technical Committee: CEN/TC 193 - Adhesives
• Drafting Committee: CEN/TC 193/WG 3 - Adhesives for paper and board, packaging and disposable sanitary products
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 12-Mar-2025
• Completion Date: 17-Sep-2026
• Ref Project: SIST EN 1720:2000 - Adhesives for paper and board, packaging and disposable sanitary products - Determination of dispersability

• Refers: EN ISO 15605:2004 - Adhesives - Sampling (ISO 15605:2000)
• Effective Date: 28-Jan-2026
• Refers: EN 1067:2005 - Adhesives - Examination and preparation of samples for testing
• Effective Date: 28-Jan-2026
• Refers: EN 827:2005 - Adhesives - Determination of conventional solids content and constant mass solids content
• Effective Date: 28-Jan-2026
• Refers: EN 923:2015 - Adhesives - Terms and definitions
• Effective Date: 28-Jan-2026
• Referred By: EN 61703:2002 - Mathematical expressions for reliability, availability, maintainability and maintenance support terms
• Effective Date: 09-Feb-2026
• Referred By: EN 61078:2006 - Analysis techniques for dependability - Reliability block diagram and boolean methods
• Effective Date: 09-Feb-2026
• Referred By: EN 61358:1996 - Acceptance inspection for direct connected alternating current static watt-hour meters for active energy (classes 1 and 2)
• Effective Date: 09-Feb-2026
• Referred By: EN 61810-2:2005 - Electromechanical elementary relays - Part 2: Reliability
• Effective Date: 09-Feb-2026
• Referred By: EN 60704-3:2006 - Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 3: Procedure for determining and verifying declared noise emission values
• Effective Date: 09-Feb-2026
• Referred By: EN 60731:1997 - Medical electrical equipment - Dosimeters with ionization chambers as used in radiotherapy
• Effective Date: 09-Feb-2026
• Referred By: EN 60672-2:2000 - Ceramic and glass insulating materials - Part 2: Methods of test
• Effective Date: 09-Feb-2026
• Referred By: EN 13850:2002+A1:2007 - Postal service - Quality of service - Measurement of the transit time of end-to end-services for single piece priority mail and first class mail
• Effective Date: 28-Jan-2026
• Referred By: EN ISO 21187:2005 - Milk - Quantitative determination of bacteriological quality - Guidance for establishing and verifying a conversion relationship between routine method results and anchor method results (ISO 21187:2004)
• Effective Date: 28-Jan-2026
• Referred By: EN ISO 5080:1999 - Sisal agricultural twines (ISO 5080:1994)
• Effective Date: 28-Jan-2026
• Referred By: EN ISO 14111:1999 - Natural gas - Guidelines to traceability in analysis (ISO 14111:1997)
• Effective Date: 28-Jan-2026

Overview

EN 1720:1998 is a European Standard developed by CEN that specifies a standardized method for determining the dispersability of dry adhesives used in paper and board, packaging, and disposable sanitary products. This test method applies broadly to various adhesive types including soluble adhesives, dispersions, and hot melt systems. The primary purpose is to serve as a comparative tool for evaluating how effectively an adhesive disperses in a given dispersing medium. It is important to note that this standard is not intended to measure the water resistance of adhesives in their finished bonded state, but rather to assess their dispersability performance for quality control and product development.

Key Topics

• Scope of Dispersability Testing
  EN 1720:1998 covers all adhesives commonly used in paper, board, packaging, and disposable sanitary products, facilitating consistency in adhesive evaluation across the industry.

• Types of Adhesives Covered

  • Soluble Adhesives
  • Dispersion Adhesives
  • Hot Melt Adhesives

• Testing Methodology
  The standard defines a uniform procedure to determine how dry adhesive powders disperse in a dispersing medium, enabling reliable comparative results.

• Comparative Test Purpose
  The method provides valuable insights for manufacturers and researchers when comparing dispersability characteristics of different adhesive formulations.

• Limitations
  EN 1720:1998 is not designed to provide definitive data on the adhesives’ water resistance after curing or bonding, distinguishing its focus from other adhesive performance tests.

Applications

• Quality Control in Adhesive Manufacturing
  Ensures product consistency by comparing batch-to-batch dispersability, which can influence processing and end-use performance.

• Product Development and Formulation
  Enables development teams to evaluate new adhesive formulations for optimal dispersability characteristics, aiding in the improvement of application and processing efficiency.

• Packaging Industry
  Used for adhesives in packaging materials to verify that adhesives meet required dispersability standards, which impacts processing and recyclability.

• Disposable Sanitary Products
  Helps manufacturers verify adhesive performance related to dispersal during manufacturing and waste processing.

• Paper and Board Processing
  Supports adhesive selection and application parameter optimization by assessing how adhesives behave in dispersing mediums.

Related Standards

• EN Series on Adhesives for Paper and Board
  EN 1720:1998 is part of a broader collection of standards addressing different performance and testing methods for adhesives used in paper and packaging industries.

• Standards on Adhesive Water Resistance
  While EN 1720:1998 does not measure water resistance, complementary standards exist to assess cured adhesive strength and durability in wet conditions.

• International Standards on Adhesives
  ISO and ASTM standards related to adhesive testing may provide further guidance on performance evaluations beyond dispersability.

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Keywords: EN 1720:1998, adhesive dispersability, paper adhesives, board adhesives, packaging adhesives, disposable sanitary products, adhesive testing standards, soluble adhesives, dispersion adhesives, hot melt adhesives, CEN standards, adhesive quality control, adhesive formulation, European adhesive standards

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