GB1135418A - A method for the manufacture of granular yeast and packs containing said yeast - Google Patents

Abstract

1,135,418. Packaging in vented bags. DISTILLERS CO. (YEAST) Ltd. 23 Nov., 1967 [24 Nov., 1966], No. 52628/66. Headings B8C and B8K. [Also in Divisions A2 and C6] Free-flowing granular yeast is packed in containers made of polyethylene film, food grade soft polyvinyl chloride film (0À002 inch thickness) or laminates of polyethylene (0À0005 inch thickness) and polypropylene (0À003 inch thickness), valved to permit the gases driven off by the contained yeast to escape to the atmosphere whilst preventing atmospheric gases from entering the container. The valve can be improvised by incompletely sealing the container and folding the end over, or by perforating the sealed container with a rod or needle of 0À02-0À006 inch diameter. The yeast may be stored in the containers at 3‹C. According to the embodiments: (i) 281bs of yeast was charged into a bag made from a cylinder of two-ply kraft paper measuring 26 inch by 17 inch with a liner of 100 gauge low density polyethylene film measuring 29 inch by 17 inch. A hole was made in the liner by a needle and the liner was tucked into the cylinder of kraft paper, the open end of which was then stitched up; (ii) 71b samples of yeast were put into plastic bags measuring 10 inch by 18 inch. The bags were heat sealed and each bag was punctured four times at a distance of 2 inch below its top; and (iii) 11b samples of yeast were packed in 8 inch by 11 inch polyethylene bags (film thickness 0À01 inch). The bags were heat sealed and punctured in two places below the seal. These bags were then packed into cartons, each holding 18 bags, made of fibre board (thickness 0À06 inch) and measuring 17“ inch by 10 inch by 5 inch.