FIELD: process engineering.
SUBSTANCE: claimed process comprises mould female element (26) to define the mould cavity complying with the cap outer surface and mould second element (28) with surface shaped so that to supplement of the mould cavity shape. One of inner and outer surfaces includes oblong element of the structure to define elongated top (38, 58). Mould second element (28) displaces into mould cavity so that top (38, 58) is located at preset spacing from one of opposite inner and outer surfaces. Said inner and outer surfaces define the mould space. Then, fused polymer is injected into mould cavity to fill it. Said preset spacing is calculated so that polymer material fills in, not completely, the space between top and opposite surface for cutout in the cap to be moulded.
EFFECT: improved design of proportioning device, reliable moulding of cutout and simplified moulding of valve.
10 cl, 17 dwg
