How does WPC’s moisture content affect screw retention in outdoor sofa assembly?
The moisture content of Wood Plastic Composite (WPC) plays a critical role in screw retention during outdoor sofa assembly. WPC, a popular material for outdoor furniture, absorbs moisture from the environment, which can cause expansion or contraction. Higher moisture levels may soften the material, reducing grip strength and leading to loosened screws over time. Conversely, overly dry WPC can become brittle, increasing the risk of cracking around screw holes. To ensure long-term stability, manufacturers must account for moisture variations by selecting appropriate screw types, pre-drilling holes, or using coatings to mitigate moisture absorption. Proper assembly techniques and material conditioning are essential for durable outdoor furniture.
