Oxidation, rancidity, peculiar smell

  Most foods containoil, proteins and other ingredients. When these ingredients are oxidized exposingto oxygen, decomposed by microorganisms, and subjected to high temperatureoxidation, the package will produce small molecules of acid, release peculiarsmell, and cause the acid value of the food to exceed the standard resulting inrancidity. Packaging of substandard quality will cause the above Issues:

1) Poor barrier properties - such as the poor oxygen barrier properties of packaging materials, causing oxygen to slowly penetrate into the packaging during long-term storage. In addition, packaging composite films with poor composite strength have poor oil barrier properties, contacting with oil will cause delamination of the composite film, resulting in a decrease in the overall oxygen barrier of the package.
2) Poor sealing performance – such as poor sealing properties at the sealing site caused by incorrect heat sealing parameters, as a result, oxygen enters the package through the heat sealing site. Or because the packaging is weak to high temperatures, the package leaks during sterilization, and the oxygen enters the package.
3) Inferior physical and mechanical properties - such as packaging materials are weak to punctures; or pinholes, creases, and damages on the packaging materials due to the kneading or squeezing during production and storage. If the damages were not discovered in time, the food would be exposed to a large amount of oxygen which may lead to oxidation and deterioration.


C106H Gas Permeability Tester

C106H Gas Permeability Tester is based on the differential pressure method,Six independent test cells with standard area, three times the number of test cells in traditional oxygen permeability testing instruments.


C206H Oxygen Transmission Rate Tester

C206H Oxygen Transmission Rate Test System is designed and manufactured based on the coulometricsensor method and conforms to ASTM D3985.


C203H Oxygen Transmission Rate Tester

C203H Oxygen TransmissionRate Test System is based on Coulometric sensor metod, and is conforming to ASTM D 3985. Independent three sets of 50cm2 standard test area cells, in line with the standard requirements for parallel sample detection.


C680M Tearing Tester

C680M Tearing Tester is suitable for testing tear resistance of film, sheet, soft PVC, PVDC,water-proof roll, woven material, polyolefin, polyester, paper, paperboard,textile and non-woven fabric, etc.


C650H Headspace Gas Analyzer

C650H Headspace Gas Analyzer is ofprofessional structure design and is with high-precision sensor, the O2 Contentin sealed bags, bottles, cans and other hollow packaging containers can beaccurately and conveniently determined. Meanwhile, with the selection of testaccessories, CO2 can also be tested. 


C670M Falling Dart Impact Tester

C670M FallingDart Impact Tester is suitable for measuring the impact mass and energy of plastic film orsheet when 50% of the sample is damaged under the impact of free falling dartat a given height.

C130H Gas Permeability Tester

C130H Gas Permeability Tester is based on the differential pressure method and Imported high precision vacuum sensor for tests of ultra-high barrier property (0.01 ~ 0.09 cm3/ m2·24h·0.1MPa) materials with high accuracy and repeatability.

C230H Oxygen Transmission Rate Test System

C230 Oxygen Transmission Rate Test System is designed and manufactured based on the coulometric sensor method (aka. equal pressure method) and conforms to ASTM D3985.

C640 Thickness Tester

C640 Thickness Tester is a high precision mechanical contact method thickness tester, which can be used for thickness measurement of films, sheeting, paper, corrugated paperboard, textiles, non-woven fabrics, and solid insulation materials, etc.

C610H Auto Tensile Tester

C610H is professionally applicable to measurement of tensile, peeling, deformation, tearing, heat sealing, adhesive, physical force as well as other properties of soft package materials, adhesives, aluminum foils, diaphragms, back sheets, non-woven fabrics, rubber and paper, etc.

C630H Heat Seal Tester

C630H Heat Seal Tester can be used to determine the optimal heat sealing parameters including dwell time, sealing pressure and sealing temperature for plastic films, flexible composite films, plastic coated paper and other heat-sealable films.

C632B Hot Tack Tester

C632B Hot Tack Tester is applicable in hot tack and heat seal performance tests for plastic films, laminated films and other packaging materials. It is applicable in peel test, tensile at break test, and other tests for adhesives, adhesive tapes, laminated films, plastic films, paper and other flexible materials.

FIT-01 Film Pendulum Impact Tester

FIT-01 can be used to determine impact resistance properties of pendulum of plastic films, sheets, composite films, aluminum foils and other materials in accordance with ASTM D3420.

C660M Leak and Seal Strength Tester

C660M Leak and Seal Strength Tester is professionally applicable to quantitative determination of seal strength, seal quality, burst pressure, seal integrity, compression resistance, torsion force and joint/disengaging force of various flexible packages, aseptic packages, plastic tamper-evident closures, flexible tubes, caps and other materials.

C660B Leak and Seal Strength Tester

C660B Leak and Seal Strength Tester is professionally designed for the leakage tests of packages for food, drugs, medical instruments, household chemical products, cars, electronic components, stationeries and other industrial products.

C611M Box Compression Tester

C611M Box Compression Tester can be used to measure the compressive resistance, deformation and stacking capability of cartons, beehive crates, plastic tanks, paper tanks, paper cases, IBC tanks and other packages.

C681M Flex Durability Tester

C681M Flex Durability Tester is professionally applicable to the determination of flex durability of flexible films, composite films and coating films.