Bottle neck finishes:-

ROPP: Roll on pilfer proof - tamper evident, suitable for beverages or pharmaceuticals.

MCA: Variation of the ROPP, MCA2 and MCA3 variants are suitable for carbonated beverages.

  ALCOA: Variation of the ROPP, 28mm can be used with child resistant closure.

  ROPP Deep: Roll on pilfer proof deep - e.g. Stelvin.

The bottle has to match the cap, so you need to choose the bottle first.

The most attractive sizes are Long-cap 28x45mm or Stelvin 30x60mm, the 30x60mm size is now the most widely used for wine bottles.

The original brand 'Stelvin' is manufactured by the French company Pechiney (owned since 2003 by Alcan Inc) but there are copies by other manufacturers. The Stelvin capsule is made up of a screw cap, a long printable skirt and a liner specifically designed for contact with wine.

The glass bottle used with the Stelvin 30x60mm cap must have a special BVS Neck Finish with a molded screw thread beginning at 2.8mm below the neck top:-

        - BVS finish: UK standard BVP-GME 30.13  /  US standard US-GPI 1680-03

There are two types of liner, with different permeability of the seal:-
The cheaper Saranex 38 liner is made from layers of polyethylene, PVDC (polyvinylidene chloride) and expanded polyethylene. It is intended for bottles which will be stored for up to one or two years.

The Saran Tin liner has a layer of tin sandwiched between PVDC, white kraft and expanded polyethylene. This tin layer means that it is much less permeable than the Saranex liner and hence less oxygen enters the bottle. It is for wines that will be stored for longer periods of up to 10 years.

For wines I advise using a Saran + Tin liner, here are other details from a manufacturer in India:-

Prices shown are exclusive of Vat.
Delivery, postage (and insurance) will usually need to be charged at cost.

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