Patent GB-429040-A (GB)
Title: A process for the manufacture of artificial sausage skins or casings
IPC: F25B15/00
Filed: 1933-11-28
Abstract: Sausage skins are produced from untanned animal skin by a process comprising treatment with chemical swelling agents (alkaline, acid or salt solutions) followed by mechanical teasing out or comminuting to produce a pulpy mass containing at least 75 per cent of non-expressible water and finally by formation of the material into tubular shape in known manner and solidifying and hardening the shaped material by drying, curing or tanning.  The swelling may be effected by treatment with several different swelling agents in succession, and the teasing out may be effected, in one or more stages by crushing, grinding &c. machines.  The tubular structure passing from the annular nozzle by which it is formed may be hardened by drying with hot air, e.g. air passed from the nozzle head into the interior of the tube which is thereby inflated and carried forward through a drying chamber.  Alternatively the hardening may be affected by aluminium sulphate, alumina, tannin or wood smoke. Binders softening or welting agents (glycerine fats, oils, &c.) or fillers such as fibres may be added to the plastic mass before extrusion. Specification 429,039 is referred to.ALSO:Sausage skins are produced from untanned animal skin by a process comprising treatment with chemical swelling agents (alkaline, acid or salt solutions) followed by mechanical teasing out or comminuting to produce a pulpy mass containing at least 75 per cent of non-expressible water and finally by formation of the material into tubular shape in known manner and solidifying and hardening the shaped material by drying, curing or tanning.  The swelling may be effected by treatment with several different swelling agents in succession, and the teasing out may be effected, in one or more stages by crushing, grinding, &c. machines.  The tubular structure passing from the annular nozzle by which it is formed may be hardened by drying with hot air, e.g. p  air passed from the nozzle head into the interior of the tube which is thereby inflated and carried forward through a drying chamber.  Alternatively, the hardening may be effected by aluminium sulphate, alumina, tannin or wood smoke. Binders, softening or welting agents (glycerine, fats, oils, &c.) or fillers such as fibres may be added to the plastic mass before extrusion.  Specification 429,039 is referred to.ALSO:Sausage skins are produced from untanned animal skin by a process comprising treatment with chemical swelling agents (alkaline, acid or salt solutions) followed by mechanical teasing p  out or comminuting to produce a pulpy mass containing at least 75 per cent of non-expressible water and finally by formation of the material into tubular shape in known manner and solidifying and hardening the shaped material by drying, curing or tanning.  The swelling may be effected by treatment with several different swelling agents in succession, and the teasing out may be effected, in one or more stages by crushing, grinding, &c. machines.  The tubular structure passing from the annular nozzle by which it is formed may be hardened by drying with hot air, e.g. air passed from the nozzle head into the interior of the tube which is thereby inflated and carried forward through a drying chamber.  Alternatively the hardening may be effected by aluminium sulphate, alumina, tannin or wood smoke. Binders softening or welting agents (glycerine, fats, oils, &c.) or fillers such as fibres may be added to the plastic mass before extrusion. Specification 429,039, [Group VIII], is referred to.