gas chromatography
Principles of gas chromatography (GC)
For packaging materials, gas chromatography (GC) is used to analyse solvent residues in printing or adhesive layers. If solvent residue levels are too high, this poses a risk, as it could lead to undesirable odours or poor laminate adhesion. That is why we measure each production stage multiple times.

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High barrier film is a premium product with features such as:
Moisture Barrier Film - this type of packaging is ideal for extreme protection from moisture. Moisture barrier films can be customized with layers of specialized film to keep moisture from compromising your products. Ensure that food products and other powdered goods stay dry with moisture blocking protection of high barrier films.

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Water vapor transmission rate (WVTR), is a measure of the passage of water vapor through a substance. It is a measure of the permeability for vapor barriers.
 

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Flexible packaging is of great importance to our daily life and economic growth in the view of global market. Flexible packaging is widely used in food, industrial application, pet food, beverage, tobacco, pharmaceutical industry etc. among which 50% of flexible packaging is for food industry as statistics showed.
 

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water vapour permeation analyzer
What is “WVTR”
WVTR stands for “Water Vapor Transmission Rate“, a measure of the passage of water vapor through a barrier material. It’s also know as “MVTR“, or “Moisture Vapor Transmission Rate“.

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water vapor permeation analyzer
When choosing a packaging film, water vapor transmission rate also called WVTR and MVTR is often balanced with oxygen transmission rate (OTR) to provide the most appropriate barrier characteristics for a particular product’s needs.

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water vapour permeability tester
Packaging material properties plays an important role in the food pharmaceutical products shelf life.Packaging Material Testing plays a critical role in the life cycle of a polymer, from the raw material to the compound through to the semi-finished and finished product.  Each stage has different test requirements, and each end user may require a different test solution depending on their role, whether it is in Product Researach and Development, Quality Control , Testing Services , or Research.
 

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coefficient of friction
Have you ever think about how to test and measure your packaging material coefficient of friction?
 

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Water Vapor Transmission Rate (WVTR) is of great significance for package quality. With the Water vapor transmission rate testing, effective quality control of food, drug and electronic products, etc. can be guaranteed so as to improve the storage, transportation and shelf life results and prolong shelf life span of the products.
The WVTR measurement is applicable for barrier property evaluation of plastic films, laminated films, sheets, back sheets, high barrier materials, foils, OLED, water-proof membranes and bottles, pouches, jars, boxes made of plastic, rubber, paper, glass and metal, as well as medical devices, etc.
The testing principle of WVTR is as follows: Mount the preconditioned specimen between the testing cells, clamp tightly. Nitrogen with constant humidity flows through one side of specimen, dry nitrogen flows through another side of the specimen. Under the function of humidity difference/grades, water vapor passes through the specimen and enters the lower humid side, and is carried to the sensor by the dry nitrogen. The electrical signals are generated at the sensor when the water vapor enters. Calculate the water vapor transmission rate by analyzing the electrical signals. For package test, dry nitrogen flows in the package, humid nitrogen flows around the outer side of the package.
GBPI supply packaging testing equipment including Water vapor permeability tester(WVTR Tester),Oxygen permeation tester(OTR Tester),Universal Tensile Measurement etc.

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ready mix concrete batch plants
 
The Engineering Concrete Mixing Plant is a processing base with a high degree of mechanized construction. The dust, noise and other pollution are more serious. When selecting the site, it should try to avoid the residents, schools, breeding bases and other areas where the livestock are concentrated, and try to reduce external influence factors to a minimum.

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Stabilized Soil Mixing Equipment
 
With the continuous advancement of technology, today's concrete batching plant has been upgraded for many years, has automated production line production capacity, and combined with the design of the site is more environmentally friendly and energy efficient. So how is the current concrete batching plant equipment automated? What is the principle?

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According to the site to determine the Air shower size?
Each Air shower users who would like to know, how can prepare to confirm Air shower size rightly, they are not doing too lookout shower , wasted costs. Doing too small to affect the efficiency of production, then how to determine a good size of it? www.cleanroomffu.com summs up the points for you to uncover the mystery explained:
1. The single person with double air blow air shower we normally use 1290(W) * 1000(D) * 2050(H) external dimensions as example, the reserved Airshower install size is larger than the outside dimensions, but not too much, because too big will not easy for trimming after Air shower installed.
2. If the cement wall shop solid wall , then both sides of the wall must be horizontal and vertical , and can be reserved for large size position than the dimensions 5mm each side , ie 1300(W)* 1000 (D) * 2190(H) until Airshower after installation the installer can use a little plastic glass to a dozen .
3 If you shop around for the color of the wall plate , you can refer cement wall Airshower stay real size , but outside the box Airshower is preferably a right angle , so that trimming costs will be lower if only the edge of the repair will be more unsightly .
4 Airshower installation site should be 380V three-phase four-wire power supply in place , and the Power greater than Airshower power .
5 Airshower placed in the ground has reached a basic level , the ground level of tolerance is +/-3mm.
6. According to the number of leaching into the working place to determine Air shower room size.
 

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