ASTM D2561-17 (2023) PDF

Full title and description

ASTM D2561-17(2023) — Standard Test Method for Environmental Stress‑Crack Resistance of Blow‑Molded Polyethylene Containers. This test method provides procedures to evaluate the susceptibility of blow‑molded polyethylene containers to environmental stress‑cracking under defined test conditions for use in quality control, comparative evaluation, and design validation.

Abstract

The standard specifies one or more laboratory procedures to assess environmental stress‑crack (ESC) resistance of containers produced by blow molding from polyethylene. It defines the test specimen (the finished container), conditioning and exposure conditions, the means to impose or accelerate stress‑cracking, observation and failure criteria, and reporting elements so users can compare materials, designs, and manufacturing conditions with respect to ESC performance.

General information

• Status: Active (current edition/reapproval).
• Publication date: November 1, 2023 (designation D2561‑17 with 2023 reapproval/update).
• Publisher: ASTM International.
• ICS / categories: 83.080.20 (Thermoplastic materials); 83.140.99 (Other rubber and plastic products).
• Edition / version: D2561‑17 (2023) — original designation year 2017, reapproved/updated 2023.
• Number of pages: 6 pages (concise test method).

Scope

This test method applies to blow‑molded polyethylene containers and is intended to provide a laboratory assessment of their resistance to environmental stress‑cracking. It is intended for finished containers (not necessarily molded plaques or sheets) and covers procedures suitable for routine quality control, comparative studies, and design or material evaluations. The method is specific to environmental stress‑cracking phenomena and does not by itself address other failure modes such as impact damage, creep, or chemical attack outside the scope of ESC testing.

Key topics and requirements

• Purpose: determine susceptibility of blow‑molded polyethylene containers to environmental stress‑cracking.
• Specimens: use of finished blow‑molded containers (specified conditioning and preparation).
• Test procedures: defined exposure/conditioning steps and methods to impose stress or accelerate cracking (procedural options for comparative or statistical determination).
• Failure criteria: definition of crack initiation/propagation, leakage or other end‑points for a tested container.
• Reporting: required information such as container construction, material identification, molding conditions, test temperature, exposure medium, number of samples, and test results (times/heights/loads as applicable).
• Application: guidance for use in quality control, material selection, package design validation, and supplier acceptance testing.

Typical use and users

Common users include packaging engineers, polymer/materials laboratories, blow‑molding manufacturers, quality and reliability teams, R&D groups developing containers or formulations, and material suppliers. Typical uses are incoming material evaluation, design verification of bottle geometry and wall thickness, process control checks, and comparative ranking of formulations or additives for improved ESC resistance.

Related standards

Standards commonly referenced alongside D2561 include other ASTM test methods and specifications for blow‑molded containers and plastics testing such as tests for drop/impact resistance, column crush, dimensional tolerances for bottles, and general plastics mechanical/conditioning test methods. Examples often used in the same context: ASTM standards addressing drop impact and container crush properties and dimensional specifications for plastic bottles, plus general plastics test methods (used for complementary evaluation).

Keywords

environmental stress‑crack resistance, ESC, blow‑molded polyethylene, polyethylene containers, packaging testing, container durability, quality control, accelerated testing.

FAQ

Q: What is this standard?

A: ASTM D2561‑17(2023) is a test method that defines laboratory procedures to assess the environmental stress‑crack resistance of blow‑molded polyethylene containers.

Q: What does it cover?

A: It covers selection and preparation of finished blow‑molded polyethylene containers for testing, procedures for imposing or accelerating stress‑cracking, failure/end‑point definitions, and required reporting so results can be used for quality control, comparison, or design evaluation.

Q: Who typically uses it?

A: Packaging and polymer engineers, manufacturers of blow‑molded containers, materials suppliers, QA laboratories, and R&D groups use the standard for material selection, process control and product validation.

Q: Is it current or superseded?

A: The designation shows the original year 2017 with a 2023 reapproval/update (designation D2561‑17(2023)). It is listed as the current active test method in its latest reapproved form; users should confirm they have the latest ASTMs catalog entry for any subsequent revisions after November 1, 2023.

Q: Is it part of a series?

A: It is a member of ASTM plastics and packaging test methods (developed under the relevant ASTM committees) and is typically used together with other container and plastics test standards (impact/drop tests, column/crush tests, dimensional specifications) for comprehensive package evaluation.

Q: What are the key keywords?

A: Environmental stress‑cracking, ESC, blow‑molded containers, polyethylene, packaging testing, container durability, accelerated testing, quality control.