The hollow core blockboard consists of two plywood panels or a back panel with a thick, lightweight core panel sandwiched between them. The finished product has the characteristics of firmness, light weight and high flexural strength. The core material has wooden hollow structure, light wood, hollow particle board frame, foam rubber, honeycomb structure board and the like. The production method generally has a great relationship with the core structure.
The following two examples illustrate its production process:
First, the wooden hollow core structure
Firstly, according to a certain specification, a wooden frame is formed. The wooden frame is sawed into a wooden strip with a certain size and thickness according to the need of wood, particle board or medium density fiberboard, and then the wooden strip is made into a hollow wooden frame, and the middle part can be Arbitrarily or not placing wooden strips, after being made into wooden frames, the two sides are glued, and the plywood is covered with the upper and lower sides, and is formed by cold pressing or hot pressing.
Second, the single board and the board jointly manufacture the sandwich material
When producing this product, the small veneer strips are arranged perpendicular to the direction of the sheet fibers. Then, a large veneer of the same thickness is placed on the veneer strip, and then a veneer is placed on the large veneer. Articles, these veneers should be staggered from each other, so many times, until the specified thickness. Put the plate last time. The mixed billet is cold pressed and then dried. After drying, the slab is sawn according to the thickness required by the core of the sheet, the core board under the saw is pulled apart, and then supported by the transverse square material between the two slats, and connected in the longitudinal and lateral directions. The objects are joined, so that the core material is made, and then the veneer, the plywood, and the like are covered on the upper and lower sides to form the hollow core blockboard.
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