GB480971A - A process for hardening artificial tubular products produced from animal fibrous material - Google Patents

A process for hardening artificial tubular products produced from animal fibrous material

Info

Publication number
GB480971A
GB480971A GB27953/36A GB2795336A GB480971A GB 480971 A GB480971 A GB 480971A GB 27953/36 A GB27953/36 A GB 27953/36A GB 2795336 A GB2795336 A GB 2795336A GB 480971 A GB480971 A GB 480971A
Authority
GB
United Kingdom
Prior art keywords
value
hardening
formaldehyde
distillate
iodine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB27953/36A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Naturin GmbH and Co
Original Assignee
Naturin GmbH and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Naturin GmbH and Co filed Critical Naturin GmbH and Co
Publication of GB480971A publication Critical patent/GB480971A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
    • B24D3/06—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
    • B24D3/08—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements for close-grained structure, e.g. using metal with low melting point
    • A—HUMAN NECESSITIES
    • A22—BUTCHERING; MEAT TREATMENT; PROCESSING POULTRY OR FISH
    • A22C—PROCESSING MEAT, POULTRY, OR FISH
    • A22C13/00—Sausage casings
    • A22C13/0013—Chemical composition of synthetic sausage casings
    • A22C13/0016—Chemical composition of synthetic sausage casings based on proteins, e.g. collagen
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01C—CHEMICAL OR BIOLOGICAL TREATMENT OF NATURAL FILAMENTARY OR FIBROUS MATERIAL TO OBTAIN FILAMENTS OR FIBRES FOR SPINNING; CARBONISING RAGS TO RECOVER ANIMAL FIBRES
    • D01C3/00—Treatment of animal material, e.g. chemical scouring of wool

Abstract

Tubular products particularly adapted for use as sausage casings are obtained by extruding from annular nozzles swollen and shredded animal fibrous materials such as hides or sinews and then treating with hardening liquids containing formaldehyde and other iodine-consuming substances which have been adjusted to a formaldehyde content of 0,025 to 0,2 gms. per 100 ccs., to an iodine value of 3,5 to 8,5 and a pH value of 2,5 to 3. The hardening liquid is preferably obtained by distillation of wood or its waste products, e.g. sawdust, the crude distillate, if necessary after redistillation, being adjusted by addition of water to a formaldehyde content of, for example, 0,12 gr. per 100 ccs. If the iodine value of the product is less than 3,5 crude distillate is added until this value is exceeded, or a wood distillate may be added, the iodine value of which is high in relation to the formaldehyde content. The distillate is next adjusted to a pH value of 2,5 to 3 by adding formic or acetic acid if it is too alkaline and ammonia if it is too acid. Alternatively, the hardening liquid may be prepared by combining compounds such as coniferyl alcohol, eugenol, acetaldehyde, pyrocatechol, pyrogallol and hydroquinone with formaldehyde and formic or acetic acid to give the desired form-aldehyde content, iodine value and pH value. The product as it comes from the extrusion nozzle may be conveyed as a continuous band through drying channels where it is treated with hot air, air being also preferably blown into the interior of the tube to inflate it. The hardening liquid is painted or sprayed on the inflated tube which is then dried. The hardening treatment and drying may be repeated. The product is washed with water and again dried. The treatment of the artificial tubular products produced according to Specifications 429,040 and 433,245 is described.
GB27953/36A 1935-10-15 1936-10-14 A process for hardening artificial tubular products produced from animal fibrous material Expired GB480971A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN0038724 1935-10-15

Publications (1)

Publication Number Publication Date
GB480971A true GB480971A (en) 1938-03-03

Family

ID=6542607

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27953/36A Expired GB480971A (en) 1935-10-15 1936-10-14 A process for hardening artificial tubular products produced from animal fibrous material

Country Status (4)

Country Link
US (1) US2103138A (en)
FR (1) FR828461A (en)
GB (1) GB480971A (en)
NL (1) NL44296C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2521738A (en) * 1944-06-15 1950-09-12 Thomas L Mcmeekin Process for the production of artificial bristles and the like from proteins
US2461602A (en) * 1946-01-17 1949-02-15 American Viscose Corp Method of manufacturing synthetic sutures and the like
US2552130A (en) * 1946-12-13 1951-05-08 John R Evans & Company Tanning proteinaceous fibers with a mixture of an aldehyde and a polyhydric phenol in a molecular ratio of at least 2 to 1
US2539958A (en) * 1947-07-14 1951-01-30 American Enka Corp Method of treating casein threads, fibers, and the like
US9938592B1 (en) 2015-04-08 2018-04-10 Matthew S. Richards Liquid smoke tanning method

Also Published As

Publication number Publication date
NL44296C (en) 1938-10-15
FR828461A (en) 1938-05-18
US2103138A (en) 1937-12-21

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