Grenzen und Risiken der ”Mould-in”- Technologie

Limits and risks of "Mould-in" technology In individual cases AMTEC® threaded inserts are also insert-moulded. When this historically "older" mould-in technology is applied, the thread inserts are put into their form prior to producing the component itself (e.g. injection moulded, pressed) and are embedded during the process of moulding. Placing may occur manually or using a handling system. Unproductive ancillary time of the injection moulding machine is increased. Technically speaking, there are three major risks involved in the mould-in process: sealing the insert opening to prevent plasticized material from penetrating and the inserted parts falling. This may result in rejects or

cause damage to tools. With respect to synthetic materials sensitive to load (e.g. PC, PMMA, plexiglass) there is another aspect to consider. If hot, plasiticized material comes into contact wih "cold", i.e. not pre-heated inserts, the temperature difference causes quenching and thus an embedded tension, facilitating subsequent crack formation in the component. Advantages apply to smaller piece numbers or with respect to appliances where handling systems already in use.