Shangda SDA waterproof breathable valve (press type waterproof breathable valve) products can meet the requirements of both the liquid and its container, the use of Shangda SDA expanded polytetrafluoroethylene (e-PTFE) waterproof breathable membrane to build breathable protective products, multi-functional polymer materials with excellent reliability. Allow air and gas molecules to pass through the breathable membrane to protect the product and meet the continuous equilibrium pressure to prevent the container from expanding, collapsing or leaking. Even if it comes into contact with high viscosity or low surface tension liquids, it can remain breathable. Prevent leakage of packaging from the inside out or from the outside to the inside to improve product safety protection. Sunda SDA breathable protective product solution thus solves the bumping of container products in the process of transporting the container, which leads to the change of gas collision in the container;

daily temperature and regional temperature leads to the expansion and contraction of gas in the container; the change of altitude leads to the change of pressure in the container.

packaging containers:

1. A large amount of gas cannot be exchanged in a sealed container with active ingredients;

2. The turbulence in the process of transporting the container leads to the accelerated gas collision change in the container;

3. The change of daily temperature and regional temperature leads to the expansion and contraction of gas in the container;

4. Altitude changes cause pressure changes in the sealed container

SDA Shangda Waterproof Press Type Ventilation Valve Packaging Container Provides Protection Solution

1, can help the container to block external moisture, dust and reaction particles, keep the container dry and liquid purity

2, splash anti-corrosion, effectively block the container containing liquid or particles, to prevent the loss caused by volatilization or reaction

3, pressure relief ventilation, release the container due to temperature, air pressure and liquid surge generated by the internal pressure, to avoid the container limb expansion collapse

4. Rapid ventilation and high-flux ventilation can solve the problem of internal blister caused by sudden increase of external atmospheric pressure;

5. Solve the problems of overflow, cracking and internal collapse, and improve the safety of sealed containers.

SDA Shangda waterproof push-type waterproof breathable valve protective function:

1.Block moisture/dust/particles 2. Pressure relief and high-flux ventilation 3. Anti-splash, anti-corrosion and anti-volatilization 4. Rapid ventilation to improve sealing safety

waterproof breathable valve products: