Compared with plastic films, how does Clear Cellophane perform in terms of gas, water vapor and chemical barrier performance?
Publish Time: 2024-09-10
Compared with plastic films, Clear Cellophane exhibits unique characteristics in terms of gas, water vapor and chemical barrier performance.
First, in terms of gas barrier, Clear Cellophane usually has good barrier performance for gases such as oxygen and carbon dioxide due to the compactness of its molecular structure. However, the specific performance depends on the specific type and production process of cellophane. In contrast, the barrier capacity of plastic films varies due to their material composition, molecular structure and processing methods. Some high-barrier plastic films, such as EVOH and PVDC, perform well in gas barrier and can even be comparable to or surpass cellophane.
Secondly, in terms of water vapor barrier, Clear Cellophane has a certain degree of hydrophilicity due to its main component of natural cellulose, which affects its water vapor barrier performance to a certain extent. Cellophane that has not been treated with water resistance easily absorbs water and softens in a humid environment, thereby reducing the barrier effect. Plastic films, especially those that have been specially treated, such as certain copolymer films, can provide better water vapor barrier properties, ensuring a dry and stable environment inside the package.
Finally, in terms of chemical barrier properties, Clear Cellophane is known for its strong barrier properties against oils, alkalines, and organic solvents, thanks to the chemical stability of its natural cellulose components. In contrast, the chemical stability of plastic films varies depending on the type of material, and some plastics may swell and degrade when exposed to specific chemicals, thus affecting their barrier properties.
In summary, Clear Cellophane and plastic films have their own advantages in terms of gas, water vapor, and chemical barrier properties. When choosing which material to use, it is necessary to make comprehensive considerations based on the specific application scenarios and needs.
