DESCRIPTION
The Weld On 4SC is a water-thin cement formulated to quickly develop very clear and provide a high strength bond to many thermoplastic substrates.
The bond of the Weld On 4SC is achieved by first softening the surfaces to be joined and then fusing them together with the dissipation of the solvent. The initial bond forms within a matter of minutes and is followed by a significant and continual increase in bond strength over the next several hours.
The Weld On 4SC may be preferred by some plastic fabricators because it is less likely to leave white marks (commonly called blushing).
Bonding Recommendations
Weld On 4SC is used extensively in sign fabrication for cementing acrylic letters to flat acrylic presentation panels and trim-capping of cut out acrylic letters. Strong butt joints are made with flat sheets by using the soak method. Weld On 4SC is also widely used in many applications (e.g. fabrication of display and presentation cases, medical equipment assembly, the bonding of plastic containers and pre-forms, and in the manufacture of numerous solvent welded structures and subassemblies using the capillary method).
Substrate Recommendations
Weld On 4SC is formulated as a blush-resistant cement for bonding acrylic (poly-methyl methacrylate) to itself. It will also form strong bonds with other thermoplastics such as polystyrene, CAB (cellulose acetate butyrate), and polycarbonate to themselves. It is not recommended for cross-linked acrylic.
Adhesive Properties
- Working Time: 1 - 2 Minutes
- Fixture Time: 3 Minutes
- 80% Cure: 72 Hours