Problems of undercuts solved
They are also used when moulded parts have lateral undercuts, which would have to be achieved with complex sliders. Here, the use of integral hinges simplifies the tool design. By folding away the wall, these undercuts usually move towards the demoulding direction. However, the moulded part remains in one piece.
If there is no possibility of snap-fitting the components in a multi-part moulding set due to a lack of space and low wall thickness grades, for example, this problem can be solved by integral hinges.
Integral hinges develop by compressing and steaming the particle foam in the manufacturing process. This creates a plasticisation in a very thin area, which is highly durable and robust.