The relationship between plywood quality and plywood layers in China

中国胶合板的质量与层数的关系

The relationship between plywood quality and plywood layers in China

中国的胶合板,一般情况下,同一种厚度,单板的层数越多,意味着质量越好,价格越高。

China’s plywood, in general, the same thickness, the more layers of veneer, means the better the quality, the higher the price.

也有例外,比如18MM的一般11层或者13层,还有9层的。9层的胶合板是一个分水岭。低于9层的价格越来越高,比如7层或者5层,因为生产用的单板原材料质量要求高。

There are also exceptions, such as the general 11 or 13 layers of 18MM, and 9 layers. The 9-ply plywood is a watershed. Prices below 9 layers are getting higher and higher, such as 7 or 5 layers, because the quality of veneer raw materials for production is demanding higher quality core veneer.

Quantity Of Plies In Plywood?

Question: I am about to purchase some 3/4 inch plywood to build a porcelain tile countertop. I went to my local lumber yard and discovered that all plywood of a specific thickness does not have the same number of layers. Whys is this and is it better to have more or less layers?

Answer: In short, the more plies or layers of veneer, the higher the quality of the plywood. However, there are special applications when fewer plies in the plywood are desirable.

Thinner layers of plies bond or laminate better than thicker layers. Hence it is less likely that your plywood will separate between bonds if you have more bonds or layers in the same thickness of plywood. In theory the more plies that you have the flatter the piece of plywood. However after 5 plies the variation in flatness becomes meaningless.

The more plies the better the grip on screws and nails. In your case this would have little meaning as you are not screwing something to the plywood but will be screwing the plywood to the cabinet frame or box.

For your countertop I would recommend that you use exterior grade plywood. Should water penetrate the tile and its corresponding grout, less damage to your base plywood will occur with exterior grade plywood.

The relationship between plywood quality and plywood layers in China,plywood quality and plywood plies,Quantity Of Plies In Plywood ,the more plies or layers of veneer, the higher the quality of the plywood

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