Permeation is one of the indexes indicates the barrier properties in material field. In packaging material industry, permeation is used to state and evaluate the barrier property of packaging materials against water vapor, oxygen or other gases, etc.; that is, through the evaluation of water vapor transmission rate (WVTR) testing, oxygen transmission rate (OTR) and other gas transmission rate (GTR) testing of packaging materials, the basic guarantee for product quality and shelf-life period is confirmed. More questions for Permeation, please visit www.labthink.cn for answers.

WVTR is the abbreviation for water vapor transmission rate, which is defined as the constant rate at which water vapor permeates through a specimen film at specified conditions of temperature and relative humidity.

On 17th-20th May, 2011, the 25th International Exhibition on Plastics and Rubber Industries was held in Guangzhou. Labthink exhibited her newly developed X series of intelligent products, and demonstrated powerful functions of Labthink CystemTM Online Laboratory Management System, the new laboratory intelligence concept based on cloud-computing. All have obtained favorable responses and recognition, and Labthink booth became one of the crowded booths among the exhibitors. Chinaplas 2011 is the debut for Labthink CystemTM Online Management [...]

Ideal gas separation membrane should possess high gas permeability, excellent capability of gas selection, good thermal and chemical stability and outstanding forming and processing properties, etc. Among the above mentioned properties, gas transmission rate of respective gas content separated by the gas separation membrane is the R&D focus of the manufacturers. Gas membrane separation is a new and highly efficient separation technology. Compared with the previous separation, gas membrane separation technology is superior in investment, [...]

Ideal gas separation membrane should possess high gas permeability, excellent capability of gas selection, good thermal and chemical stability and outstanding forming and processing properties, etc. Among the above mentioned properties, gas transmission rate of respective gas content separated by the gas separation membrane is the R&D focus of the manufacturers. Keywords: gas separation membrane, membrane gas separation, gas transmission rate, membrane separation tester Gas membrane separation is a new and highly efficient separation technology. [...]

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 rate, OTR, water vapor transmission rate, WVTR, mechanical property, differential pressure permeability tester, water vapor permeability tester, tensile tester, leak tester, seal strength, [...]

Barrier property testing of packages is one of the vital testing items for cosmetic packages. Barrier property is the permeability of packaging materials against gas, liquid and other permeable substances. Barrier property is the important factor affecting product quality during shelf life period. Barrier property testing includes permeability testing of oxygen, water vapor and fragrant gas through cosmetic packages. The unsaturated bonds in cosmetic ingredients are easy to be oxidized and deteriorated; the lost of [...]

Automotive air bag testing is a efficient guarantee for more accurate, reactive and reliable performance of air bag. Air bag is one of the passive protection systems for automotives, which is directly linked to passenger safety. According to traffic accident analysis, two thirds of car crush accidents are happening in front of cars; therefore, front air bag system is more broadly applied. Further details please feel free to contact Shirley via email: trade2@labthink.cn, (tel)0086-531-85811021 or [...]

Dairy products as the daily necessity, plays more and more important role in our life. Many dairy manufacturers, in order to meet the demands of customers, promote new products with new packages. The flexible package quality control of dairy products, thus, becomes more prominent. Hereinafter is the introduction to the flexible package quality control and analysis. Further details please feel free to contact Shirley via email: trade2@labthink.cn, (tel)0086-531-85811021 or visit our web: http://www.labthink.cn/en 1. Gas [...]

Moisture-proof Package are important for package quality, moisture-proof package quality control is therefore, very necessary. Moisture proof package is widely used in machinery, electronics, foodstuff, medicine and daily care, etc. It is a most commonly used protection against moisture during logistics. Moisture proof package avoids rusts and deterioration of the packed contents effectively. Labthink, as the excellent provider of testing instruments and testing services, integrates moisture proof methods with relevant methods for introduction. 1. The [...]