The production process of one-time molding film-faced plywood involves several steps to create a durable and high-quality material. Here is a generalized flow of the production process:
Log Selection and Peeling:
Select suitable logs based on wood species and quality requirements.
Peel logs into veneer sheets using a rotary lathe or other peeling methods.
Veneer Drying:
Dry the veneer sheets to reduce moisture content. This can be done through methods like air drying or using specialized drying equipment.
Grading and Sorting:
Grade and sort the veneer sheets based on quality, thickness, and other specifications. Higher quality veneers are typically used for the face and back layers.
Gluing:
Apply adhesive to the veneer sheets. The adhesive used is often a phenolic resin or other suitable waterproof adhesive.
Assembling Layers:
Assemble the veneer sheets into a panel with the desired number of layers. The number of layers can vary depending on the thickness and intended use of the plywood.
Hot Pressing:
Place the assembled veneer layers into a hot press. Apply heat and pressure to cure the adhesive and bond the layers together. This process is known as the hot press or one-time molding.
Cooling and Trimming:
Allow the pressed panels to cool.
Trim the panels to the required dimensions using saws or other cutting equipment.
Film Application:
Apply a layer of film (phenolic or melamine-impregnated paper) to the surface of the plywood. This film serves as a protective and decorative layer.
Second Gluing (Optional):
Some one-time molding processes may include a second gluing step before applying the film. This additional adhesive layer enhances the bonding between the film and the plywood surface.
Second Hot Pressing (Optional):
If a second gluing step is included, the plywood with the applied film is subjected to a second hot pressing to bond the film securely to the surface.
Cooling and Inspection:
Allow the plywood to cool.
Inspect the finished panels for quality, ensuring that the film is properly bonded and that the plywood meets specified standards.
Cutting and Sanding:
Cut the plywood panels into standard sizes or as per customer requirements.
Sand the edges and surfaces to achieve a smooth and uniform finish.
Quality Control:
Conduct quality control checks on a sample basis to ensure the plywood meets industry standards and customer specifications.
Packaging and Shipping:
Package the finished plywood for protection during transportation and storage.
Ship the packaged plywood to distribution centers, retailers, or directly to customers.
It’s important to note that the specific details of the production process may vary among manufacturers, and the use of advanced machinery can streamline certain steps. Additionally, adherence to industry standards and quality control measures is crucial to producing high-quality one-time molding film-faced plywood.
Post time: Jan-21-2022
