Teak Whitener

Woodworking factories generate many short pieces every day. Throwing them away is wasteful. Selling them brings low returns. Winsir Finger-Joint Adhesive helps you join these short pieces into long engineered boards. The finger joint strength reaches 85% to 100% of the original solid wood. We helped an integrated panel factory in Jiangsu calculate their savings. They used to throw away 200 tons of short materials annually. After using our finger-joint adhesive, those short pieces became engineering wood beams worth 3 million yuan. This product meets ASTM D-4688 standards. It is widely used for glulam beams and door/window frames.

Winsir Finger-Joint Adhesive comes in two formulations. The two-part type uses a PVAc emulsion with an isocyanate hardener. The mixing ratio is 100:15. The working time is 20 to 30 minutes. It has high initial tack. It is ideal for high-frequency presses. The one-part type is a moisture-curing polyurethane. You can use it directly. The working time is 10 to 15 minutes. It is suitable for room-temperature pressing. Both types of this finger-joint adhesive have 100% solid content. Neither contains formaldehyde. Both meet EPA standards. At 20°C with 1.0 to 1.5 MPa pressure, pressing time is only 3 to 10 seconds to reach initial strength.

Winsir Finger-Joint Adhesive delivers strong, reliable joints. The finger joint strength is tested according to ASTM D-4688 on birch. The ultimate tensile strength reaches 85% to 100% of the solid wood. When the joint breaks, 90% of the failure happens in the wood itself. The finger joint interface remains intact. For pressing speed, the two-part type at 20°C and 1.2 MPa pressure needs only 3 to 10 seconds. This enables continuous high-speed production. One production line can process 10 tons of short materials per day. For weather resistance, this finger-joint adhesive meets EN 204 D4 grade. It can be used outdoors and withstands rain.