Dailite's Strengths

SF (Structural Foam Injection)

This molding technology was first introduced from UCC in the USA in 1970. We DAILITE thereafter have provided large-size products such as panels and various types of container vessels with high impact resistance at reasonable prices through this molding technology which have been highly appreciated in a variety of fields and industries in Japan.

Structural Foam Injection Molding

1.Using an extrusion machine, heated molten resin is infused with nitrogen gas and stored in an accumulator as a nitrogen-containing resin.
2.The piston is pushed upwards when resin accumulates within the accumulator in the piston structure.
3.When the required quantity is accumulated, a valve is opened and the piston descends, sending the nitrogen-containing resin flowing into the mold.
4.When inside the mold, pressure is released from the nitrogen-containing resin, allowing the nitrogen gas to expand and fill inside of the mold. The cooled mold then creates a solid out of the molten resin. When completely cooled, the mold is opened and the product is pulled out.

Advantages of Structural Foam Injection

1.Foam injection of nitrogen gas allows for creating a lighter product. Our rectangular and round containers are utilized this feature.
2.As the filling pressure used for structural foam injection is less than that required for conventional injection molding, mold-clamping and injection pressures can be kept low. This allows for minimizing the required strength and cost when designing the mold.
3.Since the injection pressure can be kept low, it is possible to mold products with a large projected area compared to when using conventional injection molding machines. Our RAKURAKU Panel (Length: 2,000mm; Width: 1,000mm; Thickness: 7mm) is one example of a product that capitalizes on this feature.
4.Foam injection allows for increasing the thickness of a product with the same weight as other solid products, thereby providing superior rigidity.
5.SF is quite hygienic as foam injection uses nitrogen gas in place of a chemical foaming agent and the principal material is polyethylene. This is why products produced using this method are widely used in the agricultural and fishing industries.