Cebal

Cebal Sa

Gerard Chapet

Bernard Schneider

Alain Jupin

The invention relates to a tube head equipped with an internal lining having a barrier effect, the internal lining consists of a multi-layered polymeric element fixed by an external surface layer of the element to a plastics annular covering of the head, the element also has one or more polymeric layers having a barrier effect and a total thickness of between 0.008 and 0.05 mm and an internal surface layer of polyolefin or of polyester. The invention also relates to such thermoformed monobloc becoming the internal lining element. The invention is suitable for the production of numerous tubes.

Plastics tube head provided with a lining having a barrier effect and an

The invention concerns a process for the production of a container (46) or tube (45) fitted with a pump (1) for the distribution of a liquid or creamy product, said pump (1) bearing an annular fixing rim (2), the periphery of which is of plastics material at least at its surface wherein: (a) the pump (1) is disposed between tools which sealingly clamp the rim (2) and contain the pump (1) with clearances limiting the rise in temperature thereof in the moulding operation; (b) the body or the skirt (19) is disposed around a tool, the upper end thereof projecting beyond same; (c) the assembly of tools is disposed in such a way as to form an annular moulding space which is fed by way of a plurality of injection ducts and connects said annular rim (2) to the projecting end of said body or skirt (19); and (d) molten plastics material is injected into said annular moulding space by way of said ducts, the assembly is left to cool and the resulting tube (25) is removed from the mould. The invention also concerns the assembly of die tools used and the resulting container or tube (45), the corresponding pump (1) preferably being a pump without air return. Such containers or tubes (45) are used in the fields of cosmetology, pharmacy, hygiene and foodstuff products.

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Paris, France

Gerard Chapet