ASTM F2029-16 (2021) PDF

Full title and description

ASTM F2029-16 (Reapproved 2021) — Standard Practices for Making Laboratory Heat Seals for Determination of Heat Sealability of Flexible Barrier Materials as Measured by Seal Strength. This practice specifies laboratory procedures for preparing heat seals (using hot‑bar or impulse sealing) and for treating and evaluating resulting heat‑seal strength data as a means to determine the heatsealability of flexible barrier webs.

Abstract

This practice provides a repeatable laboratory method to make heat seals and develop heat‑seal curves so that the effect of temperature, pressure, dwell time and material construction on seal strength can be assessed. It is intended to produce starting conditions for production equipment and refers to ASTM Test Method F88 for quantitative seal‑strength measurement; it does not cover production‑equipment validation or hot‑tack testing (covered by F1921). SI units are normative in the practice.

General information

• Status: Published.
• Publication date: 14 April 2021 (current edition reapproval of F2029‑16).
• Publisher: ASTM International.
• ICS / categories: 83.180 – Adhesives / Primary Barrier Packaging (ASTM Committee F02).
• Edition / version: Designation F2029 − 16 (Reapproved 2021).
• Number of pages: 6 pages.

Scope

The standard covers laboratory preparation of heat seals and the treatment and evaluation of heat‑seal strength data to determine heatsealability of flexible barrier materials. It is limited to seals made with hot‑bar or impulse sealing methods and to assessment by seal strength measured according to Test Method F88. The practice does not include production‑equipment validation procedures and does not cover hot‑tack testing or other leak/continuity tests (air‑leak, dye penetration, microbiological challenge, etc.). Values in SI units are to be regarded as standard.

Key topics and requirements

• Laboratory heat‑seal preparation using hot‑bar or impulse sealers.
• Development of heat‑seal curves: systematic variation of temperature, pressure and dwell (seal) time.
• Evaluation of sealability by measuring seal strength per ASTM F88 (F88 is the referenced quantitative test method).
• Seals may be made between same or dissimilar webs, homogeneous or multilayer constructions; results are intended as starting points for production settings.
• Does not prescribe production validation or hot‑tack testing; excludes other continuity/leak tests.
• Specimen conditioning and related referenced practices (for example D4332) are part of the referenced framework.

Typical use and users

Used by packaging/materials engineers, quality/control laboratories, packaging suppliers, converters and R&D teams to determine suitable sealing parameters and to compare heatsealability of films, laminates and coatings prior to scale‑up. Pharmaceutical, medical device, and food packaging laboratories commonly use the practice when validating sealing formulations and establishing start‑up conditions for production. Test‑equipment manufacturers and independent testing labs also reference the practice when specifying laboratory heat sealers and reporting results.

Related standards

Commonly referenced standards in conjunction with F2029 include: ASTM F88 (Test Method for Seal Strength of Flexible Barrier Materials), ASTM F1921 (Hot tack / hot seal strength methods), and ASTM D4332 (conditioning of containers/packages for testing). The practice sits under ASTM Committee F02 on Primary Barrier Packaging.

Keywords

heat seal, heatsealability, seal strength, heat sealer, hot‑bar sealing, impulse sealing, flexible barrier materials, laboratory heat seals, seal curve, ASTM F2029, ASTM F88, primary barrier packaging.

FAQ

Q: What is this standard?

A: ASTM F2029 is a set of laboratory practices for making heat seals and evaluating heat‑seal strength data to determine the heatsealability of flexible barrier materials; designation F2029‑16 reapproved 2021.

Q: What does it cover?

A: It covers preparation of laboratory heat seals using hot‑bar or impulse sealing and guidance on producing heat‑seal curves; it directs users to ASTM F88 for measuring seal strength and excludes hot‑tack testing and production‑equipment validation.

Q: Who typically uses it?

A: Packaging and materials engineers, R&D and QC laboratories, converters, packaging suppliers, and independent test labs in industries such as food, pharmaceutical, and medical device packaging.

Q: Is it current or superseded?

A: The practice was reapproved in 2021 as F2029‑16 (Reapproved 2021); it is the current reapproved edition as published 14 April 2021. Users should check ASTM records for any revisions after that date.

Q: Is it part of a series?

A: It is a practice under ASTM Committee F02 (Primary Barrier Packaging) and is intended to be used with related test methods (notably F88 for seal strength and F1921 for hot tack).

Q: What are the key keywords?

A: Heat seal, heatsealability, seal strength, hot‑bar sealing, impulse sealing, flexible barrier materials, laboratory heat seals, heat‑seal curve.