Structural Foam Molding Process

The structural foam molding process requires an inert gas such as nitrogen to be mixed with the chosen plastic material inside an extruder barrel.

Structural foam molding process.

Since it consumes fewer resources structural foam molding is more efficient and less expensive than other injection molding processes while delivering similar results. Two components for example polyol and isocyanate which are combined in order to create polyurethane are stored in liquid form in separate containers. This mixture becomes a combined polymer gas melt. Once injected the gas expands filling the mold cavity.

Structural foam molding is a way to injection mold large parts. This mixture is then injected into a mold using less pressure than what is common in injection molding. The structural foam process is a low pressure injection molding process where an inert gas is introduced into melted polymer for the purpose of reducing density and hence weight of the finished product. The process of molding parts from structural foam is very similar to the traditional method of reaction injection molding.

Close up cross section of structural foam molding process. Structural foam plastic molding is an injection molding process that utilizes a foaming agent that mixes with the base resin in the polymer melt before being injected into the mold. The blowing agent or gas then expands to push the molten resin to the extremities of the cavities. In the structural foam molding process a blowing agent creates a cellular structure while a rigid skin forms.

Structural foam plastic molding is an injection molding process that utilizes a foaming agent that mixes with the base resin in the polymer melt before being injected into the mold. Structural foam molding is a low pressure foam injection molding process where molten resin is injected with nitrogen gas or a chemical blowing agent. Structural foam molding is a process where the addition of a blowing agent and modification of process parameters creates a sandwich construction that has a solid skin on the outer layers and a foam core in center. This mixture becomes a combined polymer gas melt.

Structural foam molding sfm is an injection molding process that is used to make strong durable and lightweight molded plastic products. Thermoplastic materials such as hdpe polypropylene abs and styrene are used along with a blowing agent which produces a molded article with a cellular core and solid skins.