Plasterboard Making Machine

Five Methods to Teach You to Identify the Quality of Gypsum Board, Not to Be Fooled

1、 Whether it meets the national standard requirements

Due to the fact that most of the strength of gypsum board comes from the paper surface, which has a fiber distribution direction, the transverse and longitudinal fracture strength of gypsum board is different. The longitudinal/transverse fracture load of gypsum board must meet the requirements of the national standard GB/T9775-1999. You can view the testing report provided by the manufacturer.

2、 Gypsum core

High quality paper gypsum boards use high-purity gypsum ore as the raw material for the core material, while inferior paper gypsum boards lack control over the purity of the raw material. Low purity gypsum ore contains a large amount of harmful substances, which can greatly affect the performance of gypsum boards. From the appearance, it can be seen that the core of a good paper gypsum board is white, while the core of a poor paper gypsum board turns yellow (containing clay) and has a dull color.

3、 Paper bonding method

Use a paper cutter to make a 45 degree "fork" on the surface of the gypsum board, and then uncover the paper surface at the intersection. It can be found that the high-quality paper gypsum board paper is still well bonded to the gypsum core, and the gypsum core body is not exposed; On the other hand, low-quality gypsum board can tear off most or even all of the paper surface, leaving the gypsum core completely exposed.