No one wants a wedged bottom on a glass container

The equipment that is supplied by us is designed especially for the examination of I.S. Mould Equipment, both throughout its creation and the repair operations. The reamers and gauges available from us, including our neckring profile gauges, offer you the foundation for achieving the proper interlocking fits, which themselves are imperative if you intend to lengthen the mould life and enhance your gear’s efficiency. Available in a multitude of sizes, our products can fulfil many unique specifications.

Numerous things can go wrong when manufacturing a glass container and the resulting fault can really ruin the aesthetics of your product. Wedge bottom is one such problem and this is where a localised thick area appears at one side of your container’s lower section. Many reasons exist as to why this might happen, with the majority of them being related to your equipment. Therefore, it’s best to see that everything is in working order before getting to work.

In terms of the machine set up and operation, it could be that you have an improper speed of invert. Should this be the case, then you must see to it that the invert is cushioned. This way, the parison won’t be able to swing when it’s moved over to the blow mould.

When there is wear between the rack and the 48-tooth gear on your neck ring, this too can cause wedge bottom. One of the remedies here would be to make sure that the neck rings are adequately set to your neck ring gauge. Furthermore, you can also investigate the 48-tooth gear for signs of wear and change it if necessary. If the rod and piston on your invert instrument are worn, replace them too.

At Penico, the neckring profile gauges that we sell enable you to measure the mould’s dovetail area. Marked with a ‘go’ and ‘no go’ profile, you can easily tell when the dovetail is correct, as the ‘go’ shall pass over it, with it being the opposite for the ‘no go’.

If our products have intrigued you and you want to know more, feel free to contact us.