| 摘要 |
The invention relates to a mould for injecting tubes having slim walls made of a plastic material. The mould, destined to make tubes (20) having an outlet mouth (21) for a product and a lateral wall (22) delimiting the space destined to contain the product to be packed, comprises an upper punch (1) and a lower punch (2) which are inserted in an external body (3, 3a) or matrix of the mould to define the space to be filled with the injected plastic material; the upper punch comprises a projection (1a) which occupies the internal part of the outlet mouth (21) and extends below the lower end of the mouth (21); the lower punch (2) comprises a cavity (2a) internally of which the projection (1a) is inserted; injection channels (4) are afforded between the projection and the cavity, which channels flow into a single injection manifold (5) are reach inlet points to a space of the mould destined to receive the injected material.
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