Detailed answer:
* There are different quality levels for achieving fire safety certification:
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Cheap: The PET panel made from 100% recycled material is dipped in a chemical liquid and left to dry.
The disadvantage is that this agent does not remain in the PET panel over the long term because, unlike wood, PET fibers have no capillary action and do not absorb anything at all.
As a result, fire protection is virtually nonexistent after a few months.
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Low-cost: Only enough high-quality virgin PET fibers are used to just pass the B1 test in accordance with the standard.
During the test, the PET is applied DIRECTLY (without an air cavity) to a noncombustible wall surface, and the fire test is then carried out in accordance with the standard.
Since the PET is exposed to fire and heat from only one side, it can pass the test.
However, when we install the PET with an air cavity at the customer's premises, this is often no longer the case!
- Good: A slightly higher proportion of virgin PET fibers with B1 characteristics is used, so that flame resistance is maintained even when installed with an air gap.
vitAcoustic PET panels are manufactured to the "Good" level, and our staff on site in China inspect every batch.
Additional information:
For PET, B1 stands for B-s1, d0, which means:
- B: Flame-resistant. This means that the building material is difficult to ignite and burns only to a limited extent in the event of a fire.
- s1: Low smoke production. The building material produces little smoke in the event of a fire.
- d0: No flaming droplets or particles. In the event of a fire, no burning parts fall from the building material that could spread the fire further.