Abstract: Apparatus for encapsulating parts of elements into a plastic material to manufacture electronic components. The mould has one or more parallel rows of mould cavities, into which a plastic material is injected through one or more sprues. The elements are part of a strip of which the length is a multiplicity of the length of a row of cavities, which strip is step by step treated in said mould such that an uninterrupted strip of components is obtained.