1. Technology is the basis of the production process of wood-based panels.

Its invention can be traced back to 3000 BC. At the beginning of the first century BC, the Romans were familiar with the principle of veneer manufacturing and plywood manufacturing.

In 1812 the French invented the veneer sawing machine;

In 1834, France issued a patent for the planer.

After 1844, the improved rotary cutting machine was officially used in industrial production. Since then, the rotary cutting machine has been continuously improved, which has promoted the development of the plywood industry. In the middle of the 19th century, Germany first established a plywood factory.

2. It was developed on the basis of modern papermaking technology.

In 1898, the United Kingdom first made semi-hard fiberboard on a rotary paper machine.

In 1914, the United States produced insulating sheets from groundwood pulp and built insulated fiberboard factories.

In 1916, the dry forming process first appeared in Austria.

In 1924, the United States created the Massonna de-blasting (blasting) fiber separation technology. In 1928, it was able to produce high-quality hard fiberboard.

In 1931, Sweden invented the Aspend Law, and in the following year established the first hard fiberboard factory in Sweden. The fiberboard manufacturing industry has since become a separate industrial category.

In 1943, the United States studied the dry and semi-dry manufacturing processes. In the early 1950s, the United States, the Federal Republic of Germany, Czechoslovakia, and Austria established factories to produce hardboard.

In the early 1960s, medium-density fiberboard was made based on the dry process. In 1966, the first medium-density fiberboard plant was built in the United States.

3. The development of particleboard began in the late 19th century.

In 1887, Germany used sawdust and blood glue to make plates, which was the beginning of particleboard.

In 1889, Germany obtained the first patent for the use of wood shavings to make particleboard. The emergence of synthetic resin adhesives in the early 20th century provided conditions for the industrial production of particleboard.

In 1935, France used waste veneer to make long shavings. In the paving process, the layers of shavings were vertically intersected to form a slab. It is the leader of the orientation technology in particleboard. In 1937, Switzerland proposed the manufacturing process of three-layer shaving structure.

The first fully equipped particleboard factory was established in Germany in 1941, which enabled the particleboard industry to complete its technical preparation phase.

In the late 1940s, with the British and German research on the continuous production of the particle board for the Badref method and the Ocal method, and the corresponding complete sets of continuous production equipment, the production of particleboard into the industrial system.

Metallraphic Polishing Paste

Polishing paste is the polishing material (such as diatomite, quartz sand, pumice, iron Dan, Vienna lime and chromium oxide, etc.) and some binder (such as stearic acid, paraffin, etc.) together into the form of oil paste. Polishing paste is generally divided into white, red, green three kinds, according to the material of polishing products is different, should choose different polishing paste

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