Elmendorf Tearing Test Comprehensive Guide for Packaging Materials Introduction to the Elmendorf Tearing Test The elmendorf tearing test is one of the most widely used methods for evaluating the tear resistance of plastic films, flexible packaging, paper, and similar thin materials. Quality control teams in packaging, food, medical, pharmaceutical, and consumer goods industries rely on this method to ensure product durability and packaging integrity. Because tear resistance directly affects packaging performance during filling, handling, and transportation, understanding this test helps manufacturers prevent failures and improve material design. This test method uses a pendulum-based tearing apparatus to measure the force required to propagate a tear across a pre-cut specimen. The controlled […]

Film COF Testing Essentials for Quality Control Introduction Film COF testing plays a critical role in evaluating how plastic films behave during processing, packaging, and end-use applications. Manufacturers, converters, and quality control personnel rely on accurate slip data to ensure smooth performance on high-speed packaging lines and to confirm product consistency. By referencing international standards such as ISO 8295, film producers can assess both static and dynamic friction to determine how films slide against themselves or other surfaces. This article explains the key principles, testing process, and the importance of reliable instrumentation for consistent quality evaluation Importance of Film COF Testing in Packaging Applications Plastic films serve essential functions in

Heat Seal Testing for Cookies Packaging with ASTM F2029 Understanding the Importance of Heat Seal Testing for Cookies Packaging  Heat seal testing for cookies packaging has become essential for food manufacturers seeking consistent freshness, product protection, and strong barrier performance. Cookies lose crispness quickly when exposed to moisture or oxygen, so the integrity of the package seal determines whether the product maintains its intended quality when it reaches the consumer. Packaging engineers, R&D teams, and quality control laboratories rely on heat seal evaluations to optimize sealing parameters, compare materials, and ensure packaging reliability across production batches. Flexible barrier films—especially laminated and multilayer structures used widely in cookie pouches—respond differently to

Impact resistance is a critical factor in ensuring product safety, durability, and performance across various industries. A ball drop tester provides a straightforward yet highly effective method to evaluate how materials and finished products respond to sudden mechanical impacts. By dropping a standard steel ball from a controlled height onto the test specimen, manufacturers can quickly assess the strength, toughness, and reliability of packaging materials, coatings, plastics, and more. At Cell Instruments, we specialize in developing precision ball drop testers designed to meet international standards and diverse testing needs. ASTM D2794 Impact Tester: Ensuring Coating Performance The ASTM D2794 impact tester standard is widely applied for evaluating the impact resistance

Understanding Rub Resistance and Its Importance Rub resistance refers to the ability of printed materials to withstand abrasion during handling, shipping, and usage. Poor rub resistance can lead to fading, smudging, or loss of critical printed information, directly impacting product quality and brand integrity. In industries like food, pharmaceuticals, and consumer electronics, preserving print quality is essential. Rub resistance becomes especially critical for high-end packaging, including labels with holographic printed layers, where even minor surface damage can compromise visual appeal or legibility. To help quality professionals and manufacturers ensure product performance, standards such as ASTM D5264 and TAPPI T830 provide structured methods for evaluating rub resistance under controlled conditions. Rub

Enhancing Packaging Quality with Stiffness Testing Equipment In today’s manufacturing and logistics environments, stiffness testing equipment plays a critical role in evaluating material rigidity and performance. Whether in the packaging sector, the courier industry, or the medical and food industries, understanding a material’s stiffness ensures that it meets required strength, durability, and handling standards. With increasing pressure on packaging materials to be lightweight yet strong, testing paper strength is more crucial than ever. Accurate stiffness testing not only ensures compliance with international standards like ISO 5628 and TAPPI T556 but also enhances overall product reliability, efficiency, and consumer experience. Applications and Benefits of Stiffness Testing Equipment Modern stiffness testing equipment

ISO 5628 Guide with Bending Stiffness Testing Machine Insights The bending stiffness test is a critical material property evaluation method used across industries including packaging, medical devices, pharmaceuticals, textiles, and paperboard production. This test measures a material’s resistance to bending and provides insights into its rigidity, flexibility, and structural performance. ISO 5628:2019 outlines standardized principles for executing such tests using two-point, three-point, or four-point bending methods. To ensure accurate results, manufacturers and quality control professionals must follow the correct procedures, use compliant equipment, and understand how variables like material thickness, modulus of elasticity, and support conditions affect results. This article guides you through the proper execution of the bending stiffness

Introduction: Why a Tablet Hardness Tester Is Essential In the pharmaceutical industry, ensuring consistent tablet quality is critical for patient safety and regulatory compliance. A tablet hardness tester plays a central role in this process by measuring the mechanical integrity of solid oral dosage forms. This test allows manufacturers to confirm that tablets can endure mechanical stresses during manufacturing, transportation, and use without compromising their performance. Cell Instruments provides advanced testing solutions, including the MPT-02 Tablet Hardness Tester, designed for high-precision, efficient testing in both R&D and quality control environments. Understanding Tablet Hardness Test and Related Measurements Evaluating tablet hardness is more than just applying pressure until a tablet breaks.

Introduction to ISO 9187-1 for Ampoules ISO 9187 is a critical international standard that specifies the technical and performance requirements for glass ampoules used in medical injectables. The standard ensures that ampoules are safe, reliable, and suitable for containing sterile pharmaceutical products. It primarily applies to ampoules made of glass and focuses on key properties such as hydrolytic resistance, annealing quality, and the breaking force required to open the ampoule cleanly and safely. In medical and pharmaceutical settings, ampoules must maintain sterility while being easy to open without causing glass shards or user injury. Hence, accurate breaking force measurement for glass ampoules is essential, and ISO 9187-1 provides the precise

How to Test Compression Strength: A Practical Guide to Ensuring Packaging Integrity and Durability In modern packaging design, understanding how to test compression strength is essential for product protection, supply chain reliability, and regulatory compliance. Whether dealing with infusion bags, plastic packaging, or medical containers, ensuring that packaging can withstand external pressure is a key component of functional safety and product integrity. At Cell Instruments Co., Ltd., we specialize in high-precision, standard-compliant equipment that enables packaging engineers and quality professionals to carry out reliable compression tests. This article outlines how compression strength testing works, how it ensures packaging integrity, and how the right instrumentation makes all the difference. Why Compression