FIELD: process engineering.
SUBSTANCE: set of inventions relates to filling of foam in joint between isolated pipe lengths (versions). Proposed method is realised by wrapping the shaping sheet of plastic reinforced by fibre around cavity or applying of shell around said cavity. Said shaping sheet has protective elements to prevent the separation of sheet edges. Shell has one or more flexible tensile elements wrapped around shell for prevention of shell bulging. Prevention occurs at expansion of foam filler introduced in the mould or shell.
EFFECT: perfect resistance to bulging, small weight of shaping sheet.
11 cl, 16 dwg
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