PU 633 - Polyurethane Adhesive - Brushable

• PU-633 is solvent based polyurethane adhesive which can be use with or without hardener. For better strength use with NeoSeal® PU HRD in provided ratio. The product is specially designed for the various application of the footwear industry where strong durable good strength is required. This adhesive system strongly joins various substrates like PU, PVC, EVA, Phylon, TPR and leather to itself and each other.

• Footwear industries for chappals, sandals, shoes, safety shoes etc.

Application:

• SURFACE PREPARATION:: Clean the soles with appropriate soles cleaner to remove oil, grease, dust and dirt etc. and let it dry for 5 to 10 minutes. Apply relevant primers to substrate, depending upon type of substrates like EVA, TPR and PU. Allow to dry for at least 20 to 30 minutes at ambient temperature. Thoroughly roughen and clean the upper component by using suitable tools.

• APPLICATION PROCESS WITHOUT HARDENER: Apply adhesive uniformly on the joining area of both components using brush or suitable tools. Allow adhesive to dry for 20 to 30 minutes at ambient temperature. In case of porous (absorbing) substrate, apply second coat of adhesive and let it dry for 20 to 25 minutes at ambient temperature. After that heat the substrates at 70°C to 75°C for 3 to 5 minutes using oven or appropriate equipment. Bond both the components immediately in hot condition and apply uniform pressure using appropriate device. Allow components to cool at room temperature under full pressure before releasing from the device. To achieve faster production components can be cool down using chilling unit under pressure. After cooling, remove the excess adhesive from the components carefully using crepe rubber roll. To achieve optimum strength, allow components to cure for 24 hours at ambient conditions.

• APPLICATION PROCESS WITH HARDENER: Take 100 gm. NeoSeal® PU 622 adhesive in a clean container and add about 5 gm. (5 part) NeoSeal® PU HRD by weight in the container and mix it thoroughly to get homogeneous mixture. The prepared mixer should be used for application within 4 hours at ambient condition. For the rest of process follow the instruction of step 2.

Shelf life:

• Tin Can: 12 months