An intelligent low-pressure adaptation of the normal injection moulding process permits the direct combination of textile fabrics with moulded parts in one operation. This single-stage process not only saves time but can also be automated. And it also enhances the quality of functional plastic trim sections.
The ENGEL tecomelt moulding processes are lowpressure processes. There are two different processes, the choice of which depends on the size of part and/or the mould filling pressure: ENGEL tecomelt injection moulding and ENGEL tecomelt press moulding.
ENGEL tecomelt injection moulding.
The machines used for the ENGEL tecomelt injection moulding process are of the conventional, horizontal type, but feature certain modifications. The process differs from the conventional injection moulding process in that the cavities are filled under low pressure. This can be achieved either through cascade-controlled, multiple pin gating (sequential opening of the injection points) or by combining conventional injection moulding with a compression process. ENGEL tecomelt injection moulding is particularly suitable for long, narrow parts.
ENGEL tecomelt press moulding
A vertical press is used for the ENGEL TECOMELT press moulding process. The melt is introduced into the bottom half of the mould by means of an extrusion coating system which follows the contours of the mould cavity. The decorative fabric is then placed over the layer of melt and the two components are pressed together. The woven or knitted structure of the fabric remains perfectly intact. The process is also suitable for a much wider variety of fabrics. Even the ntroduction of a fabric interlayer is a conceivable means of reinforcing the moulded art. The ENGEL tecomelt press moulding process is particularly suitable for the production of arge-area parts.