Catalogs >
Labthink Instruments Co., Ltd. >
Quality Control and Resolutions for Pet Food Packaging

Quality Control and Resolutions for Pet Food Packaging
2Pages

Catalog excerpts

Quality Control and Resolutions for Pet Food Packaging - 1

Quality Control and Resolutions for Pet Food Packaging Abstract: as pets are getting more and more popular, the quality control requirements for pet food are much stricter than before. Besides quality safety of pet food itself, the barrier property evaluation of pet food packaging has drawn the attention of pet food manufacturers. Keywords: pet food packaging, barrier property, oxygen transmission ate, OTR, water vapor transmission rate, WVTR, mechanical property, differential pressure permeability tester, water vapor permeability tester, tensile tester, leak tester, seal strength, seal performance With the development of living standards and the change of life styles, there have been great changes in recreation, consumption and emotional commitments. Thus, pet industry is surging. As pets are getting more and more popular, the quality control requirements for pet food are much stricter than before. Besides quality safety of pet food itself, the quality control and testing for its packaging has drawn the attention of pet food manufacturers. Hereafter, Labthink will make an introduction of barrier property, seal property and seal performance of pet food packaging, based on Labthink’s differential pressure gas transmission rate tester, water vapor transmission rate tester, tensile tester and leak tester. 1.Barrier Property Testing for Pet Food Packaging Barrier property refers to the barrier functioning of vacuum packaging materials against gases and liquids. In other words, barrier property is the transmission performance of gases or liquids through vacuum packaging materials. Thus, barrier property testing includes water vapor transmission rate testing and gas transmission rate testing which can be subdivided into tests for detailed gases, such as oxygen, nitrogen and carbon dioxide, etc. Barrier property is the influential factor for shelf life product quality. 1.1 Oxygen Transmission Quantity of Pet Food Packaging Pet food contains great amount of fat. If the packaging materials are inferior in oxygen barrier property, the product inside would have more contacts with oxygen. If so, fat of the pet food would be easily oxidized, and led to deterioration. As to pet food with aroma, the entering of air and exiting of aroma would influence the degree of satisfaction. Oxygen transmission rate should be tested according to GB/T 1038-2000, Plastics-Film and Sheeting-Determination of Gas Transmission-Differential-Pressure Method, and ISO 2556, Plastics -Determination of the Gas Transmission Rate of Films and Thin Sheets under Atmospheric Pressure -Manometric Method. Labthink VAC series of differential pressure gas transmission rate testers select best components with stable and reliable performance. The testers are superior to national and international standards. Besides gas transmission quantity measurement, this series of instruments have unique functions for determination of solubility coefficient, diffusion coefficient and permeation coefficient. Thus, fully meet the demands for barrier property analysis and optimization. 1.2Water Vapor Transmission Quantity of Pet Food Packaging If packaging material has high water vapor transmission rate, the pet food inside would be easily damped and get lump. What’s worse is that germs would grow and endanger pets’ health. Water vapor transmission quantity should be tested according to GB/T 1037-1988, Test Method for Water Vapor Transmission of Plastic Film and Sheet –Cup Method, and ASTM E96-2000, Standard Test Methods for Water Vapor Transmission of Materials. Testing temperature is 38±0.6%, and relative humidity is 90±2%. Labthink PERME series of water vapor transmission rate testers is manufactured with highly precise weighing sensor to improve testing accuracy and shorten the determination period for permeation equilibrium effectively. Correspondingly, the whole testing process can be shortened. Meanwhile, temperature and humidity control technology has been combined with weighing technology, and with the help of computer control technology, automatic measurement can be realized with precise testing results and no external interference. Thus, the water vapor transmission rate testing for aluminum foil or other high barrier materials can be completely satisfied. There are several instrumental options, including

Open the catalog to page 1

Quality Control and Resolutions for Pet Food Packaging - 2

single-cell, three-cell, six-cell or twelve-cell water vapor transmission rate testers. 2. Mechanical Property of Pet Food Packaging The mechanical properties are the fundamental indexes for pet food product during production, transportation, shelf life and usage, etc., which include tensile strength, elongation, heat seal strength and tearing strength, etc. 2.1 Tensile Strength Tensile strength is termed as the biggest strength value of pet food packaging material before breakage. Through testing, breakage resulting from packaging materials with insufficient tensile strength can be...

Open the catalog to page 2