Food & Pharmaceutical Grade Filter Bags
Bag filters, when used in food, beverage or pharmaceutical applications, must conform to EC directives governing plastics in contact with food. Migration limits of contaminants from polymers into a food product have been imposed, and independent testing and certification of component materials is required to ensure these regulations are satisfied. Stringent manufacturing and warehousing conditions as well as special packaging procedures are also required to eliminate other sources of contamination.
Allied Filter Systems Ltd is a leading manufacturer of food grade filter bags which fully satisfy the above conditions.Read more
The constituent materials have been chosen for their purity, giving low levels of migration and ensuring consistent high quality and performance.
- Polypropylene and polyester needlefelt
- Polypropylene and polyester extended life needlefelt
- Nylon monofilament mesh
- Polypropylene and polyester microfibre
Combined with our positive sealing Welseal (polypropylene or polyester) welded ring, needlefelt food grade filter bags have a fully welded construction as standard. The external surface of the filter bag is calendered or singed, eliminating any possibility of fibre migration into the filtrate. Each bag may be individually wrapped.
All filter bags are manufactured to IS0 9001 quality standards. Further information on food grade products is available on request.
Standard Filter Bags
Allied Filter Systems Ltd manufactures high quality liquid filter bags to fit standard size filter vessels, as well as custom designed products where requested. The constituent materials have been chosen for their purity, consistent high quality and repeatable performance. Filter bags are available in traditional stitched form or with a fully welded construction, and are fitted with a comprehensive choice of rings.
Sewn Needlefelt Filter Bags
Needlefelts are a versatile and cost effective media providing a high solid holding capacity for both non-deformable and deformable, gelatinous particles. By means of a depth filtration mechanism, particles penetrate and are captured throughout the depth of the filter media.
Fully Welded Filter Bags
All seams are welded rather than sewn, and combined with our positive sealing moulded Welseal (polypropylene or polyester) welded ring, no process liquid can bypass through needleholes caused by the sewing process or around a traditional metal ring. The Welseal ring forms a 360o hermetic seal between the filter bag and housing, ensuring that fully welded filter bags perform to a higher efficiency than a sewn equivalent.