Products
Products
Cross-Bottom Sacks
Valve Sacks
Pinch Top sacks
Valve Sacks
Valve sacks feature an integrated valve opening that allows powdery or free-flowing products to be filled quickly and cleanly. After filling, the valve closes automatically depending on the design or is additionally sealed. This makes valve sacks particularly suitable for automated filling processes, for example for building materials, food products or chemical products.

Cross-Bottom Sacks
Cross-bottom sacks are characterised by their stable, cross-folded base. This makes them easy to fill, securely close and store in a space-saving way. Depending on the design, they are suitable for a wide range of filling goods – from food and animal feed to building materials and seed.

Pinch Top sacks
Pinch Top sacks feature offset paper plies at the opening, which makes filling and subsequent closing much easier. They are particularly well-suited for powdery or free-flowing products and can be securely sealed by gluing.
Production
Paper sack manufacturing
Consultation
Design and printing technology
Production
Quality Control
Logistics
A quality industrial sack is not produced by a single machine, but through a meticulously planned process. At Feldmann Verpackungen, five steps seamlessly integrate into paper sack manufacturing — from initial consultation to on-time delivery at your loading dock.
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FAQ

Is the sack suitable for hygroscopic materials?

This is one of the main areas of application. The combination of dense film layers and the hermetic hot-melt closure reliably blocks the ingress of moisture. Materials that absorb water and clump remain free-flowing and retain their specific product properties.

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