GB676499A - Container for and process of preserving perishable foodstuffs - Google Patents

Container for and process of preserving perishable foodstuffs

Info

Publication number
GB676499A
GB676499A GB25618/50A GB2561850A GB676499A GB 676499 A GB676499 A GB 676499A GB 25618/50 A GB25618/50 A GB 25618/50A GB 2561850 A GB2561850 A GB 2561850A GB 676499 A GB676499 A GB 676499A
Authority
GB
United Kingdom
Prior art keywords
per cent
acrylonitrile
vinylidene chloride
copolymer
article
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
GB25618/50A
Inventor
Chemical Dow
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.)
Dow Chemical Co
Original Assignee
Dow Chemical 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 Dow Chemical Co filed Critical Dow Chemical Co
Priority to GB25618/50A priority Critical patent/GB676499A/en
Priority to BE498837A priority patent/BE498837A/en
Priority to BE498838A priority patent/BE498838A/en
Priority to GB25662/50A priority patent/GB676500A/en
Publication of GB676499A publication Critical patent/GB676499A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08J2327/08—Homopolymers or copolymers of vinylidene chloride

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Packages (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Wrappers (AREA)
  • Bag Frames (AREA)

Abstract

Flexible bags are made from a plasticized copolymer containing from 90 to 92 per cent by weight of vinylidene chloride and from 10 to 8 per cent of acrylonitrile, by extruding the polymer into a tube which is super-cooled, then extended longitudinally and radially to align the submicroscopic crystallites parallel to the film surface, and finally sealed at one end, e.g. by flattening and heating under moderate pressure. The bags may be made with pockets or other special shapes by welding the flattened tube along the desired contour lines. In use, a bag slightly larger than the article to be protected is employed and the bag shrunk on to the article. In an example a copolymer comprising 90.6 per cent vinylidene chloride and 9.4 per cent acrylonitrile was prepared by polymerizing a mixture of vinylidene chloride monomer and acrylonitrile in water in the presence of the sodium salt of the dihexyl ester of sulphosuccinic acid and as catalyst hydrogen peroxide and sufficient ferric nitrate to provide 14 parts of iron per million parts of the mixed monomers. The mixture was emulsified and was held at 45 DEG C. for 22 hours, at which time polymerization was 80 per cent complete. The copolymer was coagulated from its latex, washed, dried, plasticized with 10 per cent of its weight of dibutyl sebacate, stabilized with 2.0 per cent of tetrasodium pyrophosphate, and then extruded into tubes. Specification 518,470, [Group VI], is referred to.
GB25618/50A 1950-10-20 1950-10-20 Container for and process of preserving perishable foodstuffs Expired GB676499A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB25618/50A GB676499A (en) 1950-10-20 1950-10-20 Container for and process of preserving perishable foodstuffs
BE498837A BE498837A (en) 1950-10-20 1950-10-20 packaging improvements
BE498838A BE498838A (en) 1950-10-20 1950-10-20 packaging improvements
GB25662/50A GB676500A (en) 1950-10-20 1950-10-20 Container for and process of preserving perishable foodstuffs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25618/50A GB676499A (en) 1950-10-20 1950-10-20 Container for and process of preserving perishable foodstuffs

Publications (1)

Publication Number Publication Date
GB676499A true GB676499A (en) 1952-07-30

Family

ID=10230578

Family Applications (2)

Application Number Title Priority Date Filing Date
GB25662/50A Expired GB676500A (en) 1950-10-20 1950-10-20 Container for and process of preserving perishable foodstuffs
GB25618/50A Expired GB676499A (en) 1950-10-20 1950-10-20 Container for and process of preserving perishable foodstuffs

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB25662/50A Expired GB676500A (en) 1950-10-20 1950-10-20 Container for and process of preserving perishable foodstuffs

Country Status (2)

Country Link
BE (2) BE498838A (en)
GB (2) GB676500A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1033014B (en) * 1957-09-24 1958-06-26 Emil Schafft Process and device for the production of ready-to-cook, frozen meat in pieces or slices with a light red meat color
DE1097794B (en) * 1956-07-14 1961-01-19 Kornelis Van De Kerke Method and device for preserving food by heating in a closed container
DE1117985B (en) * 1957-05-09 1961-11-23 Unilever Nv Process for the rapid production of ready-to-use pickled, sliced pork
DE1155966B (en) * 1955-10-20 1963-10-17 Exxon Research Engineering Co Polyethylene-containing film wrapping suitable for holding meat and other foods
DE1202111B (en) * 1961-09-28 1965-09-30 Heinrich Schwarz & Sohn Fabrik Process for preserving real salmon or saithe in slices or cutlets

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020519B (en) * 1953-10-30 1957-12-05 Rudolf Dehne Process for sterile and permanent packaging of food

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1155966B (en) * 1955-10-20 1963-10-17 Exxon Research Engineering Co Polyethylene-containing film wrapping suitable for holding meat and other foods
DE1097794B (en) * 1956-07-14 1961-01-19 Kornelis Van De Kerke Method and device for preserving food by heating in a closed container
DE1117985B (en) * 1957-05-09 1961-11-23 Unilever Nv Process for the rapid production of ready-to-use pickled, sliced pork
DE1033014B (en) * 1957-09-24 1958-06-26 Emil Schafft Process and device for the production of ready-to-cook, frozen meat in pieces or slices with a light red meat color
DE1202111B (en) * 1961-09-28 1965-09-30 Heinrich Schwarz & Sohn Fabrik Process for preserving real salmon or saithe in slices or cutlets

Also Published As

Publication number Publication date
BE498837A (en) 1951-02-15
GB676500A (en) 1952-07-30
BE498838A (en) 1951-02-15

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