Butterfly valve box bag (nylon outer layer, nylon/Evoh, nylon/water film)

Industry knowledge

How does the coating thickness of nylon-coated aluminum affect the barrier properties of bag-in-box with butterfly valve?

The coating thickness of nylon-coated aluminum has a significant impact on the barrier properties of bag-in-box with butterfly valve, mainly reflected in the following aspects:
Blocking effect:
When the coating thickness is moderate, nylon-coated aluminum can form an effective barrier layer to prevent oxygen, water vapor and other external substances from penetrating into the bag, maintaining the freshness and quality of the items inside the bag. For example, if the coating thickness reaches a certain standard (such as above 250um), the barrier performance of the bag can be significantly improved.
If the coating is too thin, it may not form a sufficient barrier, causing external substances to easily penetrate into the bag through the coating, reducing the barrier effect of the bag.
Although a coating that is too thick can enhance barrier properties, it may also lead to uneven coating and affect the overall stability of the barrier effect.
Sealing performance:
For bag-in-box with butterfly valve, the coating thickness of nylon-coated aluminum directly affects the sealing performance of the butterfly valve when closed. When the coating thickness is moderate, a tight sealing structure can be formed between the butterfly valve and the bag body, effectively preventing external substances from entering the bag through the gaps.
If the coating is too thin, the seal between the butterfly valve and the bag may not be tight and leakage may occur.
If the coating is too thick, it may affect the flexibility and ease of operation of the butterfly valve, making it more difficult to use.
Overall performance:
The coating thickness of nylon-coated aluminum not only affects the barrier and sealing properties, but also affects the overall performance of the entire bag-in-box. When the coating thickness is moderate, bag-in-box not only has good barrier and sealing properties, but also has good flexibility and durability.
If the coating is too thin or too thick, it may lead to a decrease in the overall performance of the bag-in-box, such as reduced flexibility, weakened durability, etc.
The coating thickness of nylon-coated aluminum is one of the key factors affecting the barrier properties of bag-in-box with butterfly valves. In actual production, the appropriate coating thickness needs to be selected according to specific application scenarios and requirements to ensure that the bag-in-box has excellent barrier properties and comprehensive performance.

Can nylon material increase the corrosion resistance of bag-in-box with butterfly valve?

Nylon material does play a significant role in increasing the corrosion resistance of bag-in-box with butterfly valve. The following is a detailed analysis of this:
As a polymer compound, nylon has good chemical stability and therefore has good chemical corrosion resistance. It can resist the erosion of a variety of chemicals, such as acids, alkalis, salts, esters and hydrocarbons. Especially in environments such as liquid ammonia, refrigerants, and gasoline, nylon can still maintain good corrosion resistance and wear resistance.
In the application of bag-in-box with butterfly valve, nylon material can be used as one of the materials for valve sealing rings. Because nylon has the characteristics of low friction coefficient and good corrosion resistance, it is particularly suitable for ball valves, stop valves, etc. with a temperature not exceeding 90°C and a nominal pressure not exceeding 32MPa. This means that under most conventional working conditions, nylon sealing rings can effectively prevent medium leakage and protect the internal metal parts of the valve from corrosion.
Nylon material also has a certain resistance to hydrolysis corrosion. Although nylon will hydrolyze faster under high temperature and high humidity conditions, it still has relatively good hydrolysis corrosion resistance for general water and common acid and alkali solutions. This is especially important for bag-in-box used in liquid media, because it can effectively prevent moisture and other chemical media from corroding the bag body and valve.
Nylon material can indeed increase the corrosion resistance of bag-in-box with butterfly valve. By selecting nylon as a valve sealing ring material or part of the bag body material, the service life and safety of the bag-in-box in corrosive media can be effectively improved. At the same time, the excellent performance of nylon material also makes it widely used in chemical, petroleum, power and other industries.