What Are Valve Sacks?

Posted on - 11th January 2021

Valve sacks are designed for high-speed filling on spout packers and are typically used to hold granular products from fine powders, such as cement, through to plastic polymers, crumb rubber and granular foodstuffs (such as sugar).

In this blog, Centurion Packaging will tell you everything you need to know about valve sacks and their many applications.

Explaining the Uses of Valve Sacks

A valve on the bag allows quick and easy closing after filling and eliminates the need for sewing. They can be manufactured with internal and external valves with tamper-evident heat seal valve sacks also available. If you are dealing with fine powders, you can also have valve sacks with a 'tuck-in' valve. It is also important that valve bags are fully filled, as it is the weight of the product which holds the valve closed.

The valve is an integral part of the bag as when filled, the valve sack takes on a cube shape which makes it easier to palletise. Plastic valve bags are also available with embossed stripes on the body which improves stability when the bags are put on pallets or stacked.

Polythene valve bags are mainly used for powders such as dyes, foodstuffs and cement plus they can also be used to pack plastic polymers.

Polypropylene valve bags are the toughest sack available, making them ideal for heavy-duty materials. Using a coating or liner also makes them suitable for fine powdered products.

Get in Touch for More Information

If you have any questions about Centurion Packaging’s range of valve sacks, please do not hesitate to contact us now.

Our bags are extremely popular for recycling and waste management clients and help to streamline their operations.

Read our client Testimonials to get a better idea of why customers continue to use Centurion Packaging for all of their bulk and valve bag requirements.

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