Introduction of MDF

Published:

2022-10-19

Medium density fiberboard (English name: Medium Density Fiberboard, abbreviated as MDF, referred to as MDF). Medium density fiberboard is a kind of artificial board made of wood fiber or other plant fiber as raw material, after crushing, fiber separation, drying, applying urea-formaldehyde resin or other suitable adhesive, and then hot pressing. Its density is generally in the range of 500-880 kg/m3, and its thickness is generally 5-30 mm.

MDF Process

1. Material preparation

The first step in the production process of MDF is material preparation. The equipment mainly includes chippers, belt conveyors, screening machines, bucket elevators, and storage bins.

2. Preparation of fibers

The preparation of fibers is mainly fiber separation, which is the core link of the MDF production process. Steps of Fiber Separation:

A: Hot grinding. B: Waxing. C: Sizing.

3. Dry

The main equipment in the drying process of the MDF production process is composed of a drying host, a drying pipeline, a cyclone separator, a fiber conveying device, and a dry fiber silo.

4. Forming

Pavement forming is a very important process in the production process of MDF. This process includes the main parts such as slab paving, pre-pressing, trimming, and cross-section.

5. Hot pressing

The hot-pressing process for domestic manufacturing of medium and high-density fiberboard is an intermittent multi-layer hot-pressing process, and various process factors have an important impact on the performance of MDF.

A: Hot pressing temperature. B: Hot pressing pressure. C: hot pressing time. D: Moisture content of slab.