GB573067A - Improvements relating to the production of hollow articles from cellulose derivativecompositions - Google Patents

Improvements relating to the production of hollow articles from cellulose derivativecompositions

Info

Publication number
GB573067A
GB573067A GB1768143A GB1768143A GB573067A GB 573067 A GB573067 A GB 573067A GB 1768143 A GB1768143 A GB 1768143A GB 1768143 A GB1768143 A GB 1768143A GB 573067 A GB573067 A GB 573067A
Authority
GB
United Kingdom
Prior art keywords
former
liquid
solvent
derivative
composition
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
GB1768143A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1768143A priority Critical patent/GB573067A/en
Publication of GB573067A publication Critical patent/GB573067A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/003—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor characterised by the choice of material
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/14—Dipping a core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2001/00—Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2001/00—Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as moulding material
    • B29K2001/08—Cellulose derivatives
    • B29K2001/12—Cellulose acetate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/12—Paper, e.g. cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/14—Wood, e.g. woodboard or fibreboard

Abstract

Hollow articles are made by coating a former with a hot composition comprising fibrous material dispersed throughout a solution of a thermoplastic derivative of cellulose in a liquid which is not a solvent for the derivative at ordinary temperatures, converting the solution into a gel by cooling, stiffening the gel by evaporation of the liquid or of a substantial proportion of a constituent or constituents thereof, and removing the stiffened gel from the former. The liquid may be (a) a mixture of a liquid which alone, even when boiling, is not a solvent for the derivative, with a solvent plasticizer for the derivative: e.g. a solution of dimethyl phthalate in ethanol; other examples are given; or (b) a mixture of two liquids, neither of which, even when hot, dissolves the derivative: e.g. a mixture of an "associated" liquid with a non-associated liquid which is miscible with the associated liquid; e.g. a mixture of normal propanol, or isopropanol, with chlorinated aliphatic hydrocarbons such as ethylene dichloride, trichlorethylene or ethylenetetrachloride; to a solution of the derivative in this p mixture may be added solvent or non-solvent plasticizers, e.g. triphenyl phosphate; or (c) a single liquid such as (1) ethyl acetate or methyl ethyl ketone (for dissolving cellulose acetate); (2) diacetone alcohol or butyl acetate (for dissolving cellulose acetatestearate): solvent or non-solvent plasticizers may be added; or (3) toluene (for dissolving ethyl cellulose); or (d) a true solvent for the derivative, diluted with one or more non-solvents, e.g. (1) acetone plus benzene or plus benzene and ethanol (for dissolving cellulose acetate); and (2) ethylene dichloride plus benzene (for dissolving cellulose acetate-stearate). The fibrous material may be wood pulp, chopped paper, cotton or linen yarn, stretched regenerated cellulose, disintegrated rags, asbestos fibres or macerated asbestos fabric. The composition may contain (a) substances which afford protection against ultra-violet radiation, e.g. salol, Michler's ketone, fluoranthrene or benzal-acetophone; and (b) pigments, metallic powders and carbon black. The temperature at which the composition is applied to the former may range from 50 DEG to 160 DEG C. The former may be (a) coated by dipping; (b) coated initially with a layer of material which facilitates removal of the article from the former, e.g. polyvinyl alcohol, chlorinated rubber, soaps, waxes and esters of soap-forming acids; (c) cooled so that the composition gels immediately on contact therewith; (d) rotated to ensure evenness of coating; and (e) inflatable, flexible, resilient, disintegratable, frangible or collapsable. The former may be hollow, the composition being placed therein and the former being spun about its axis, whereby the composition is caused by centrifugal force to coat the inside of the former. After the coating has been set by cooling, the volatile liquid may be evaporated at ordinary or elevated temperatures. To facilitate the removal of a cellulose acetate-containing coating, it may be swollen in an aqueous bath.ALSO:Hollow articles are made by coating a former with a hot composition comprising fibrous material dispersed throughout a solution of a thermoplastic derivative of cellulose in a liquid which is not a solvent for the derivative at ordinary temperatures, converting the solution into a gel by cooling, stiffening the gel by evaporation of the liquid or of a substantial proportion of a constituent or constituents thereof, and removing the stiffened gel from the former. The liquid may be (a) a mixture of a liquid which alone, even when boiling, is not a solvent for the derivative, with a solvent plasticiser for the derivative: e.g. a solution of dimethyl phthalate in ethanol: other examples are given; or (b) a mixture of two liquids neither of which, even when hot, dissolves the derivative : e.g. a mixture of an "associated" liquid with a non-associated liquid which is miscible with the associated liquid; e.g. a mixture of normal propanol, or isopropanol, with chlorinated aliphatic hydrocarbons such as ethylene dichloride, trichlorethylene or ethylenetetrachloride: to a solution of the derivative in this mixture may be added solvent or non-solvent plasticisers, e.g. triphenyl phosphate; or (c) a single liquid such as (1) ethyl acetate or methyl ethyl ketone (for dissolving cellulose acetate), (2) diacetone alcohol or butyl acetate (for dissolving cellulose acetate-stearate): solvent or non-solvent plasticisers may be added; or (3) toluene (for dissolving ethyl cellulose); or (d) a true solvent for the derivative, diluted with one or more non-solvents, e.g. (1) acetone plus benzene or plus benzene and ethanol (for dissolving cellulose acetate), and (2) ethylene dichloride plus benzene (for dissolving cellulose acetate-stearate). The fibrous material may be wood pulp, chopped paper, cotton or linen yarn, stretched regenerated cellulose, disintegrated rags, asbestos fibres or macerated asbestos fabric. The composition may contain (a) substances which afford protection against ultra-violet radiation, e.g. salol, Michler's ketone, fluoranthrene or benzal-acetophone, and (b) pigments, metallic powders and carbon black. The temperature at which the composition is applied to the former may range from 50 DEG to 160 DEG C. The former may be (a) coated by dipping, (b) coated initially with a layer of material which facilitates removal of the article from the former, e.g. polyvinyl alcohol, chlorinated rubber, soaps, waxes and esters of soap-forming acids, (c) cooled so that the composition gells immediately on contact therewith, (d) rotated to ensure evenness of coating, and (e) inflatable, flexible, resilient, disintegratable, frangible or collapsable. The former may be hollow, the composition being placed therein and the former being spun about its axis, whereby the composition is caused by centrifugal force to coat the inside of the former. After the coating has been set by cooling, the volatile liquid may be evaporated at ordinary or elevated temperatures. To facilitate the removal of a cellulose acetate-containing coating, it may be swollen in an aqueous bath.
GB1768143A 1943-10-26 1943-10-26 Improvements relating to the production of hollow articles from cellulose derivativecompositions Expired GB573067A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1768143A GB573067A (en) 1943-10-26 1943-10-26 Improvements relating to the production of hollow articles from cellulose derivativecompositions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1768143A GB573067A (en) 1943-10-26 1943-10-26 Improvements relating to the production of hollow articles from cellulose derivativecompositions

Publications (1)

Publication Number Publication Date
GB573067A true GB573067A (en) 1945-11-05

Family

ID=10099352

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1768143A Expired GB573067A (en) 1943-10-26 1943-10-26 Improvements relating to the production of hollow articles from cellulose derivativecompositions

Country Status (1)

Country Link
GB (1) GB573067A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112268903A (en) * 2020-10-15 2021-01-26 华能国际电力股份有限公司 On-site metallographic coated test paper and preparation and use methods thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112268903A (en) * 2020-10-15 2021-01-26 华能国际电力股份有限公司 On-site metallographic coated test paper and preparation and use methods thereof
CN112268903B (en) * 2020-10-15 2023-05-05 华能国际电力股份有限公司 On-site metallographic tectorial membrane test paper and preparation and use methods thereof

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