Plastics tube head provided with a lining having a barrier effect and an internal member which can be used for this lining

A plastic tube head comprising a pre-formed internal laminate integrally molded to a unitary plastic neck and a plastic substantially truncated cone-shaped shoulder, said pre-formed internal laminate comprising at least three polymeric lamina, said at least three lamina comprising an exterior lamina and an interior lamina each having a thickness of between 0.25 to 1.2 mm and a low softening temperature, said exterior and interior lamina being selected from the group consisting of PE, P an PET, and an intermediate high softening temperature barrier effect lamina of between 0.008 to 0.05 mm thickness sandwiched between said exterior and interior lamina, said barrier effect lamina being selected from the group consisting of EVOH, PVDC, PAN, PVDF, PA, saran and metaxylene diamine 6, an pre-formed internal laminate lining at least 80% of the internal height of the neck and at least 50% of the substantially truncated cone-shaped shoulder with said exterior lamina embedded in said neck and shoulder and said interior lamina generally non-embedded in said neck and shoulder.