Film-faced Plywood is the special plywood with one or two sides coated with wearable and water-proof film which protect the core from moisture, water, weather and extend the plywood’s life. The application of film-faced plywood is for shuttering plywood, formwork plywood, concrete formwork, floorboard, vehicle building.

Film-faced plywood is the most popular plywood produced by manufacturers in Vietnam.  There are 5 common defects of film faced plywood by Vietnam manufacturers:

1/ BURN FILM ON FILM FACED PLYWOOD

  Burn film is the most popular defect of film-faced plywood. Burn film is the film integrity damage caused by internal or external defects.

Reason:

1. The face of film-faced plywood is sanded not well.
2. The veneer is too high moisture or non-uniform dried.
3. The veneer is too bad quality, too deep crack on back.
4. It’s too high temperature or too high pressure in the hot-press process.
5. Incorrectly calculate the thickness of the veneer; or too high hot-press and too high temperature.

2/ LOCAL BUBBLES ON FILM FACED PLYWOOD SURFACE

  Local bubbles on the plywood surface are caused by glue line delamination, which appears local bulges on the plywood surface.

Reason:

1. The veneer is too high moisture or non-uniform dried.
2. The spread of glue is too much, non-uniform.
3. Hot-press pressure is reduced quickly, the temperature is too high.
4. Resin is in not have enough condensation.
5. The time of the hot press is not enough.

3/ EDGE CHIPS ON FILM FACED PLYWOOD
Edge chips constitute the defect characterized by the lack of laminating film on the edges of a plywood sheet.

Reason:

1. The time of the hot press is not enough.
2. The veneer is too high moisture or non-uniform dried.
3. The face is sanded not well.
4. The quality of the glue is poor.

4/ LOCAL LAMINATION OF FILM FACED PLYWOOD SHEETS

  Lamination is the splitting of two adjacent veneer layers along with the glue layer. And this makes the plywood weak and it’s not acceptable for a finished plywood.

Reason:

1. The veneer is too bad quality, too deep crack on back Sides of veneer is not regular.
2. The veneer is too high moisture.
3. Hot-press pressure is reduced quickly, the temperature is too high.
4. Resin is in not enough condensaưtion.

5/ FILM POWDERING

  Film powdering is the breaking of the laminating film away from the underlying plywood base along the edges. It’s caused by the worker’s mistake when put the film into the face before the hot-press process.

The above is the most popular defects of Film faced Plywood in many Vietnam manufacturers. There are many solutions which manufacturers should apply to decrease the defective rate such as:

(1) The moisture content of veneer should be controlled strictly before and during production.

(2) Control glue spread according to production technology.

(3) Reduce pressure on hot-press and cold-press in low speed.

(4) The quality of resin should be checked carefully.

(5) Prevent displacement of veneer.

(6) Pay attention to control aging time.

(7) Control quality of glue liquor.

(8) Improve the workmanship in hot-press.

However, these pre-finished solution does not completely prevent the plywood from the defect as many parts of the manufacturing process is participated by humans. To ensure quality, after manufacturing inspection is utterly important. With many years of manufacturing experience and a deep understanding of plywood, Vietimber Group ensures not only input, manufacturing process but also the finished goods. We establish a professional Quality Control Team to inspect meticulously every piece of Plywood, do the testing and make a report for all consignments before on board.