Mould air venting

Everyone that has worked within the glass container industry knows that getting the correct profile for your mould is essential. One fault is all it takes to ruin your receptacle. If you don't want any mistakes, then you should invest in one of our neckring profile gauges.


There are many processes involved in the creation of glass bottles. One of these is what we call mould air venting. During the final quarter of the 19th century, this was a groundbreaking step for bottle creating technology.

Air venting includes the drilling of compact holes into the mould's forming section. Usually, this is in tandem with separate mould air passage chambers. They allow the air existing inside the mould to escape rapidly. As a result the bottles mesh nearer to the mould's inner shape. There isn't as much glass distortion and the design is sharper.

Evidence of air venting

Air venting can produce incredibly tiny bumps or marks. You can find them nearly anywhere on a bottle's facet. However, they are commonly on the mould seams, shoulders, base, and body corners. At times, they become part of the actual embossing.

Normally, air vent pumps are about the size of a pinhead. Air venting happens on machine-made and mouth-blown bottles. At times, the machine-made models will have the vent holes in the mould's joints. In other cases, they are in some obscure area. This can make them hard to detect.

At Penico, we manufacture our neckring profile gauges in an array of sizes. We're not limited to this range though. When necessary, we fabricate custom sizes to suit needs that are more specific. As a result we can supply a product for almost any need.

If you would like to discuss the details with us, you're more than welcome to contact the company. We will help you to select the right gauge for each job. In addition we calibrate gauges. If you have any issues with the reading we can help you.