Why can blackout cloth block light? Principle of blackout cloth, blackout cloth has the effect of blocking strong light and ultraviolet rays. There are two forms of curtains made of blackout cloth: one is made into curtain type, and the blackout cloth used is relatively light and easy to fold. Generally, Velcro is used to combine the selected curtains and blackout cloth into one, with the coated side facing outward to block strong light.
There is also a roller blind type. The blackout cloth is usually processed to make it flat and drapey, and can be directly made into a roller blind.
There are three main materials for shade cloth:
1. The front is the original Gray cloth, the back is PVC coated! The price is around 10 yuan/meter, but the environmental protection performance is poor.
2. PVC cloth is added to the grid-like gray cloth, and the back is also coated. It feels like plastic, thicker than the previous one, and has a good light-shielding effect! The disadvantage is that it is relatively brittle and less environmentally friendly.
3. The blend of linen and cotton has a relatively heavy weight and good drape. It can be directly made into curtains and has good environmental protection performance, but the color is single. The price of blackout cloth ranges from more than ten yuan/meter to tens of yuan/meter, or hundreds of yuan/meter. The blackout cloth has the effect of blocking strong light and ultraviolet rays.
