In plywood joining processes, common methods can be selected based on structural requirements, appearance requirements, and strength grades. Below is a brief explanation and application suggestions for five common joining methods:
1. Direct Fastening Connection: Using screws or nails for mechanical fixing is the most common joining method. Suitable for situations where appearance requirements are not high or structural components are exposed, such as frame structures and furniture back panels. During operation, attention must be paid to the specifications, spacing, and countersunk treatment of the fasteners to ensure a firm connection and a smooth surface.
2. Frame Structure Connection: Multiple plywood panels are joined into a large surface area using wooden or metal frames as an intermediate support structure. Commonly used in walls, ceilings, and furniture bases where enhanced overall stability is required. Reinforcing ribs can be added between the frames according to load requirements.
3. Concealed Connection: Connections are achieved through pre-embedded connectors, specialized hardware, or tongue and groove structures, with no visible fasteners on the surface. Suitable for furniture and interior decoration where aesthetics are important. Common processes include:
1. Eccentric connectors: used for assembling panel furniture;
2. Embedded clips or slide rails: used for connecting movable panels;
3. Concealed screws with caps: screw holes are covered with wood wax or veneer.
IV. Riveting Connections: Fixed using blind rivets or solid rivets, suitable for connecting multi-layered plywood or other materials such as metal. Features vibration resistance and loosening resistance, commonly used in display equipment, shelves, and the internal structures of vehicles.
V. Tenon and Corrugated Joints: Serrated grooves are created on the side of the board through milling, and then joined with adhesive. This method effectively increases the bonding area, improving tensile and shear strength, and is commonly used in scenarios with high load-bearing requirements, such as worktables and stair treads.
