GB795868A - Improvements in or relating to the manufacture of moisture-proof sheet wrapping materials having a normally solid polyethylene plastic coating - Google Patents

Improvements in or relating to the manufacture of moisture-proof sheet wrapping materials having a normally solid polyethylene plastic coating

Info

Publication number
GB795868A
GB795868A GB9133/55A GB913355A GB795868A GB 795868 A GB795868 A GB 795868A GB 9133/55 A GB9133/55 A GB 9133/55A GB 913355 A GB913355 A GB 913355A GB 795868 A GB795868 A GB 795868A
Authority
GB
United Kingdom
Prior art keywords
polyethylene
coating
film
vinylidene
moisture
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
GB9133/55A
Inventor
Charles Richard Bruce
Trevor Norman Williams
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.)
British Cellophane Ltd
Original Assignee
British Cellophane Ltd
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 British Cellophane Ltd filed Critical British Cellophane Ltd
Priority to GB9133/55A priority Critical patent/GB795868A/en
Publication of GB795868A publication Critical patent/GB795868A/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
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/044—Forming conductive coatings; Forming coatings having anti-static properties
    • 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
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
    • 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
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
    • 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
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/052—Forming heat-sealable coatings
    • 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
    • C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2301/06—Cellulose hydrate
    • 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
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/06—Polyethene
    • 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
    • C08J2427/00—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
    • C08J2427/02—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
    • C08J2427/04—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
    • C08J2427/08—Homopolymers or copolymers of vinylidene chloride

Abstract

795,868. Laminates;. coated webs of regenerated cellulose. BRITISH CELLOPHANE, Ltd. March 14, 1956 [March 29, 1955], No. 9133/55. Class 140. Moisture-proof sheet wrapping material is made by coating a regenerated cellulose base film with a thin continuous layer of vinylidene chloride polymer or copolymer and applying to this a coating of a normally solid polyethylene. The latter coating may be applied by dipping the film in an organic solvent (e.g. ochlorobenzene or xylene) solution or an aqueous dispersion of polyethylene and subsequently doctoring and drying the coating or a hot layer of polyethylene may be extruded on to the coated film and the two passed through heated rollers. The coatings may be applied to one or both sides of the film. Polyvinylidene chloride or a copolymer of vinylidene chloride with one of a mixture of two or more of the following: acrylonitrile, methacrylonitrile ; methyl, ethyl, butyl or isobutyl acrylate; methyl, ethyl, butyl or isobutyl methacrylate; vinyl chloride or vinyl acetate may be used and itaconic acid or anhydride, citraconic acid or anhydride and mesaconic acid may also be included. To enhance anchoring of the vinylidene coating to it the cellulose film may be first impregnated with for example malamine or urea formaldehyde resin or polyethyleneimine. Wetting agents and slip agents such as are described in Specifications 655,006, 714,275, 731,630 and 766,708 may be added to the vinylidene copolymers. Commercial polyethylene may be used and may be modified with for example raw rubber, polyisobutylene, paraffin wax, gum dammar, polyvinyl acetate, a dye, a pigment, a mineral filler or a substance which eliminates the accumulation of electrostatic charges such as glyceryl monostearate or a polyethylene glycol monolaurate having 6 to 10 ethylene glycol units in the molecule. Polyethylene having a number average molecular weight of between 14,000 and 44,000 and a softening point of at least 100‹ C. is preferred. Specifications 622,481, 626,536, 633,645, [Group XXVIII], 655,732, 677,926, 727,414 and 766,827 also are referred to.
GB9133/55A 1955-03-29 1955-03-29 Improvements in or relating to the manufacture of moisture-proof sheet wrapping materials having a normally solid polyethylene plastic coating Expired GB795868A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9133/55A GB795868A (en) 1955-03-29 1955-03-29 Improvements in or relating to the manufacture of moisture-proof sheet wrapping materials having a normally solid polyethylene plastic coating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9133/55A GB795868A (en) 1955-03-29 1955-03-29 Improvements in or relating to the manufacture of moisture-proof sheet wrapping materials having a normally solid polyethylene plastic coating

Publications (1)

Publication Number Publication Date
GB795868A true GB795868A (en) 1958-06-04

Family

ID=9866010

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9133/55A Expired GB795868A (en) 1955-03-29 1955-03-29 Improvements in or relating to the manufacture of moisture-proof sheet wrapping materials having a normally solid polyethylene plastic coating

Country Status (1)

Country Link
GB (1) GB795868A (en)

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