GB632733A - Improved methods of and means for coating explosive charges - Google Patents

Improved methods of and means for coating explosive charges

Info

Publication number
GB632733A
GB632733A GB19820/47A GB1982047A GB632733A GB 632733 A GB632733 A GB 632733A GB 19820/47 A GB19820/47 A GB 19820/47A GB 1982047 A GB1982047 A GB 1982047A GB 632733 A GB632733 A GB 632733A
Authority
GB
United Kingdom
Prior art keywords
charge
sheet
parts
wrapped
mould
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
GB19820/47A
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.)
ERNEST PHILIP CLEMMOW
Original Assignee
ERNEST PHILIP CLEMMOW
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 ERNEST PHILIP CLEMMOW filed Critical ERNEST PHILIP CLEMMOW
Priority to GB19820/47A priority Critical patent/GB632733A/en
Publication of GB632733A publication Critical patent/GB632733A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • C06B21/0083—Treatment of solid structures, e.g. for coating or impregnating with a modifier
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/08—Cellulose derivatives
    • C08L1/26—Cellulose ethers
    • C08L1/28—Alkyl ethers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18—Fireproof paints including high temperature resistant paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/28—Cartridge cases characterised by the material used, e.g. coatings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/21—Urea; Derivatives thereof, e.g. biuret

Abstract

632,733. Ammunition. ATKINS, A. A., CLEMMOW, E. P., ROE, H., and WEAVER, S. D. July 23,1947, No. 19820.. [Class 9 (i)] A cylindrical explosive charge has a preformed non-inflammable sheet of a thermoplastic resinous substance wrapped round its curved surface to inhibit burning, the sheet and the charge being bonded together by the application of heat and pressure. The charge may be a cordite composition consisting of 49.5 per cent nitrocellulose, 41.5 per cent nitroglycerine and 9 per cent diethyl diphenyl urea, all parts. being by weight. An extruded cordite charge 4.3 inches diameter and with a star-section axial bore is coated with a cellulose acetate plastic dissolved in acetone. The plastic composition is 55 parts cellulose acetate, 40 parts triacetin, 5 parts diethyl diphenyl urea. When the coating has dried a sheet of the plastic composition is wrapped three times round the charge, the sheet being <SP>1</SP>/ 40 inch thick and wider than the length of the charge. The wrapped charge is then placed in a bronze or other non- ferrous metal mould having passages for steamheating and water-cooling. The mould is in two semi-cylindrical parts, the internal surfaces being chromium-plated and lubricated with stearic acid powder or oleic acid. The internal diameter is 4.43 inches and when the two parts are forced together and steam is passed through the mould, excess plastic is extruded at the mating surfaces. After heating for 5 minutes, the mould is cooled and the coated charge removed. Alternative compositions are given for the plastic sheet. Non-combustible fillers such as asbestos, mica, titanium dioxide, magnesia, calcium hydroxide, " Celite " (Registered Trade Mark), or powdered chalk, may be incorporated in the sheet material. Instead of using a mould, the sheet material may be consolidated and bonded to the charge by three spaced parallel rollers. The wrapped charge is supported on two rollers having passages for heating fluids and the third roller is brought into contact with the charge to apply pressure. When using this method the sheet is given an initial set before application to the charge, by rolling it into a cylinder and applying a constraining ring. After pressure has been applied the sheet coating is about 0.06 inches thick. The treated charge may be wrapped in paper, asbestos sheet or with a textile fabric as in Specification 616,292. Specification 489,279 also is referred to.
GB19820/47A 1947-07-23 1947-07-23 Improved methods of and means for coating explosive charges Expired GB632733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB19820/47A GB632733A (en) 1947-07-23 1947-07-23 Improved methods of and means for coating explosive charges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB19820/47A GB632733A (en) 1947-07-23 1947-07-23 Improved methods of and means for coating explosive charges

Publications (1)

Publication Number Publication Date
GB632733A true GB632733A (en) 1949-12-05

Family

ID=10135781

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19820/47A Expired GB632733A (en) 1947-07-23 1947-07-23 Improved methods of and means for coating explosive charges

Country Status (1)

Country Link
GB (1) GB632733A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3012507A (en) * 1961-12-12 Shaped- ammonium nitrate propellant
EP0247013A2 (en) * 1986-05-23 1987-11-25 Aktiebolaget Bofors A flare charge insulation, a method of its manufacture and a flare charge manufactured according thereto
WO2018178584A1 (en) 2017-03-30 2018-10-04 Eurenco Ethyl cellulose films, preparation of same and double-base propellant blocks combustion-inhibited with such films

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3012507A (en) * 1961-12-12 Shaped- ammonium nitrate propellant
EP0247013A2 (en) * 1986-05-23 1987-11-25 Aktiebolaget Bofors A flare charge insulation, a method of its manufacture and a flare charge manufactured according thereto
EP0247013A3 (en) * 1986-05-23 1991-11-27 Aktiebolaget Bofors A flare charge insulation, a method of its manufacture and a flare charge manufactured according thereto
WO2018178584A1 (en) 2017-03-30 2018-10-04 Eurenco Ethyl cellulose films, preparation of same and double-base propellant blocks combustion-inhibited with such films
FR3064639A1 (en) * 2017-03-30 2018-10-05 Eurenco ETHYLCELLULOSE FILMS AND DOUBLE-BASED PROPERGOL BLOCKS INHIBITED IN COMBUSTION WITH SUCH FILMS

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