Finishing solutions for mould release

Manufacturers in the foam moulding industry make everything from shoe soles, office furniture, automotive interiors, sound insulation, seat cushions, mattresses and sporting goods. These products are produced by the RIM (Reaction Injection Moulding Process) in which reactive chemicals are injected into mould cavities to make the foam cushion. Once the foam has solidified, the mould is opened and the foam cushion is removed. 

 

One of the key steps in this process is the application of a mould release agent. The mould release agent is a liquid material that must be applied evenly to the inside of the mould to ensure that the foam part can be easily removed from the mould. It is crucial that the surface finish of the release agent is smooth, as it will impact the smoothness of the foam part. It is also crucial that every surface of the mould is covered otherwise the foam will adhere to the mould and result in tearing of the foam when it is removed. Any overspray that does not coat the inside of the mould is considered to be an expensive waste.

 

The automatic nature of the mould release application and the requirement that the material is applied evenly within the metal mould, makes Graco’s Pro Xpc Auto the ideal solution. Not only does the product provide a uniform and consistent spray atomisation for even coating, but also the electrostatic charge ensures that the particles are uniformly dispersed and that the metal mould is completely covered, even in the tough to reach spots. This eliminates scrap due to part tearing. 

The electrostatic spray pattern also ensures overspray is reduced, and waste is eliminated. By increasing transfer efficiency, the customer spends less on material, waste disposal, VOC permitting, booth filters, and any parts and labour associated with maintenance, resulting in amazing savings.