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packaging testing equipment Water Vapor Permeation Tester
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  • Full-Automatic Total Migration Test Technology and Application of Disposable Paper Cups
    Full-Automatic Total Migration Test Technology and Application of Disposable Paper Cups 2024-02-27
    Paper cups are one of the main disposable packaging containers. The general raw materials of disposable paper cups are food-grade wood pulp paper and food-grade PE film, although the outer layer is paper, but the contact with food is the inner plastic film. In the process of use, disposable paper cups usually come into contact with high temperature, acidic and alkaline liquids, and if the paper cups contain more migratory substances, this will migrate to the human body through the food in the process of use, which will have an impact on human health. In order to ensure its safety,worldwide countries have established their own designated food contact materials testing regulations, such as the U.S. FDA 21 CFR, the European Union EU NO 10/2011, Germany LFGB, France DGCCRF, Japan JFSL 370, Italy D.M.21/03/73, UK SI 898, China GB 4806, GB 9685, GB-31604.8. Experimental principles The migration test is performed by selecting the appropriate pretreatment conditions and food simulants according to the characteristics of the food products to which the samples will be exposed in the actual use scenario. The evaporator cup is heated at a set temperature, cooled, weighed, and the procedure is repeated until a constant weight is reached. The simulants were added into the evaporation cup, evaporated in a water bath, dried in a chamber heated to 105℃, and cooled. After the evaporation dish is cooled, the constant weight is determined by a balance (with a sensitivity of 0.01mg), and the experiment is terminated to meet the constant weight requirement of the project. Full-Automatic Total Migration Tester ZF900 Experimental conditions Food simulants selected 4% acetic acid (v/v) and 20% ethanol (v/v); experimental conditions for 70 ℃, 2h; samples for disposable paper cups using the filling method, paper cups filled volume of 150mL food simulants ,S according to the actual contact area for calculation, the number of samples for a blank and 2 parallel samples. The experimental process A food simulant of V=150mL was measured in a measuring cylinder, filled into a disposable cup, sealed with two layers of plastic wrap, tied with a rubber band, and immersed in a preheated oven at 70°C for 2h. A 4% acetic acid blank solution and a 20% ethanol solution were made from the same batch. The contact surface of the food simulants in the disposable cups was calculated as S. A 4% acetic acid blank and a 20% ethanol solution were made from the same batch. Quantitatively measure 100 mL of the pre-treated sample solution, denoted as V1. The solutions were separately added to the AUTO ZF900 Total Migration and Nonvolatility Tester for testing. The automated process of constant weight in empty cup, evaporation in water bath, constant weight in residue and solvent recovery was carried out. Analysis of results The assay data of disposable paper cups measured in 4% acetic acid and 20% ethanol food simulants are shown in Table 1. Table 1 Test results of disposable pap...
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  • OTR & WVTR for Mono Plastics Packaging Material
    OTR & WVTR for Mono Plastics Packaging Material 2024-01-15
    Mono packaging films typically have inherent barrier properties that depend on the specific polymer used. For instance, certain mono films made from materials like polyethylene or polypropylene offer a degree of moisture resistance. However, they might have limited barrier capabilities against gases such as oxygen and carbon dioxide. If your packaging requirements demand superior barrier properties, you might consider multi-layer films or coatings that can enhance resistance to specific elements, providing better protection for the packaged contents.  Mono plastic packaging films can provide certain barrier properties, but their effectiveness depends on the specific type of plastic used. For example, materials like high-density polyethylene (HDPE) or polyethylene terephthalate (PET) offer good moisture and gas barrier properties. However, for applications requiring enhanced barrier performance, such as oxygen or light barrier, multi-layer films with additional coatings or laminations may be more suitable. It's essential to consider the specific requirements of the product being packaged and choose the packaging material accordingly. OTR (Oxygen Transmission Rate) and WVTR (Water Vapor Transmission Rate) tester are crucial for assessing the barrier properties of packaging materials. For mono packaging products, these tests help ensure the integrity and quality of the packaging.  1. OTR Tester Application:    - Purpose: Determines the rate at which oxygen permeates through the packaging material.    - Importance: Essential for products sensitive to oxygen exposure, such as certain food items, pharmaceuticals, and chemicals.    - Application: Mono packaging products can use OTR testing to optimize material selection, ensuring extended shelf life and product stability. 2. WVTR Tester Application:    - Purpose: Measures the rate at which water vapor passes through the packaging material.    - Importance: Critical for products susceptible to moisture, like electronics, pharmaceuticals, and certain foods.    - Application: Mono packaging products benefit from WVTR testing to prevent moisture-related issues, maintaining product quality and longevity. By employing both OTR and WVTR testing, manufacturers can tailor mono packaging materials to specific product requirements, minimizing spoilage, degradation, or damage caused by oxygen and moisture.
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  • ASTM E96 Gravimetric Method GBPI Water Vapor Permeability Analyzer AUTO W806
    ASTM E96 Gravimetric Method GBPI Water Vapor Permeability Analyzer AUTO W806 2023-12-12
    GBPI Water Vapor Permeability Analyzer AUTO W806 is based on the test principle of ASTM E96 gravimetric method water vapor transmission and equipped with 6 test chambers. It provides a wide range and high efficiency water vapor transmission rate detection for low, medium and high water vapor barrier materials testing. It is suitable for the water vapor transmission performance test of films, sheets, paper, fabrics, non-woven fabrics and related materials in the fields of food, medicine, medical equipment, daily chemicals, etc.
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  • Barrier Film Quality Control Testing throughout the Converting Process
    Barrier Film Quality Control Testing throughout the Converting Process 2023-11-29
    Quality control (QC) testing for barrier films during the converting process is crucial to ensure they meet performance specifications. Here's a condensed overview of QC testing stages: Raw Material Inspection: Verify resin quality and absence of impurities before production begins. Thickness and Uniformity: Use micrometers or laser gauges to measure film thickness, ensuring consistency. Optical Quality: Assess clarity, gloss, and haze to ensure visual properties are within specifications. Barrier Properties: Oxygen Transmission Rate (OTR): Test with OTR meters to ensure low oxygen permeability. Water Vapor Transmission Rate (WVTR): Use WVTR meters to confirm moisture barrier effectiveness. Mechanical Properties: Tensile Strength and Elongation: Determine film strength and stretchability. Puncture Resistance: Test resistance to tearing or breaking. Seal Integrity: Evaluate the strength and uniformity of seals, if applicable. Surface Energy: Verify surface properties for adequate ink adhesion in printing processes. Lamination Bond Strength: For laminated films, check the adhesion between layers. Dart Drop Impact Test: Assess impact resistance by dropping a dart from a set height. Aging Tests: Simulate storage conditions to predict long-term barrier performance. These tests are interspersed at critical points, such as post-extrusion, post-lamination, after printing, and on the final product. Consistent QC ensures the barrier film maintains its protective functions, adheres to industry standards, and meets customer requirements.
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  • Flexible Packaging Film Technology and Coefficient of Friction
    Flexible Packaging Film Technology and Coefficient of Friction 2023-11-16
    Different manufacturing processes of plastic films lead to differences in the surface morphology of the product, which usually affects the smoothness of film when it passes through machines and equipment. Effectively control the coefficient of friction(COF) of packaging films to improve production line efficiency. coefficient of friction(COF) has always been a major difficulty in the flexible packaging industry. The coefficient of friction (COF) of packaging film production processes is an issue that film manufacturers and distributors have to grapple with every day. In order to solve this problem, film manufacturers usually use additives in the film manufacturing process to further improve the film manufacturing process, thereby controlling the friction coefficient of flexible packaging and minimizing the impact of this adverse factor.  Click here to know more about Coefficient of friction tester Coefficient of friction tester(COF tester) is used to measure the coefficient of friction of plastic films, sheets, paper and other materials when they slide on the surface of itself or other materials. It is used in quality inspection, drug inspection, scientific research, packaging, film, food, medicine, daily chemical and other industries. In order to detect changes in friction coefficient of materials under various conditions, packaging film manufacturers generally use professional friction coefficient testers as a means of detection and control.   standards:  ASTM D1894-2014, ISO 8295-2004, TAPPI 816 Therefore, it is the time for film manufacturers to find the best way to control the coefficient of friction so that direct users and end users can obtain high-quality products with large output and few failures that can continue to operate, and tailor solutions according to customer needs and actual applications. problems that need to be faced. 
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