What Kind of Plywood Is Considered Good?

A high-quality plywood not only ensures engineering quality and construction safety, but also effectively reduces project expenses by selecting high turnover templates at the same cost.

So, what kind of plywood is considered good? Next, Shuangma Wood Industry will provide you with a detailed introduction to the key production factors of high-quality plywood.

glue

The key to the turnover of plywood lies in the type and content of adhesive used; The panel is made of highly waterproof phenolic resin adhesive, and the core board is made of melamine adhesive.

We have dedicated personnel responsible for glue mixing, and each sheet has strict adherence to the glue content standards. The glue content for small sheets is controlled between 0.85-0.95 pounds, and for large sheets it is controlled between 1.6-1.8 pounds. The quality inspection department conducts spot checks once every hour. The viscosity of the glue should reach 180 or above.

If the amount of glue used is reduced or the type of glue is changed, the cost can be reduced, but such templates are prone to delamination and the quality cannot be guaranteed.

Core board

High quality plywood will be made from high-quality raw materials. The quality of raw wood veneer directly affects the internal density and bonding strength of the plywood. High quality plywood uses first grade core board to ensure that the layers inside the formwork are tightly bonded without voids, which is the basic guarantee for the service life of the formwork.

Plywood made from second or third grade boards often has a lot of voids, which not only reduces the effective use of the template, but also directly leads to a significant decrease in the overall quality of the template.

Hot pressing

The criss crossing core board needs to undergo high temperature and high pressure treatment to solidify the adhesive, thereby generating sufficient bonding force and strength to ensure a tight bond between the layers of the core board.

Any processing technology that reduces pressure, although it makes the template thickness meet the standard, actually reduces the overall quality of the template, seriously affecting its service life and turnover times. Such products are considered defective.

Noodle skin

The surface of high-quality plywood is as shiny as a mirror, and the whole body is shiny. The use of a whole sheet of dough with few or no joints is the basic condition for a flat and smooth surface; The second method is to use a certain concentration of phenolic resin adhesive, which is hot pressed to form a waterproof and smooth film on the surface of the board, achieving a good demolding effect.

Moisture content

The moisture content of the plywood usage environment is generally controlled between 8% and 13%.

The moisture content of plywood has a significant impact on its quality. If the moisture content of the template is too high, it will easily deform and crack during use, thereby reducing its service life and turnover times.

On the contrary, if the moisture content is too low, it may cause the template to become too dry and brittle, which will also affect its effectiveness. Therefore, it is crucial to control the moisture content of plywood.

When purchasing plywood, we should not only focus on price factors, but also consider multiple dimensions comprehensively in order to select templates that meet project requirements and have high cost-effectiveness.