GB420368A - Improvements in or relating to the manufacture of pencils and the like - Google Patents

Improvements in or relating to the manufacture of pencils and the like

Info

Publication number
GB420368A
GB420368A GB1504933A GB1504933A GB420368A GB 420368 A GB420368 A GB 420368A GB 1504933 A GB1504933 A GB 1504933A GB 1504933 A GB1504933 A GB 1504933A GB 420368 A GB420368 A GB 420368A
Authority
GB
United Kingdom
Prior art keywords
solvent
evaporated
natural
sheaths
paste
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
GB1504933A
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.)
Morgan Crucible Co PLC
Original Assignee
Morgan Crucible Co PLC
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 Morgan Crucible Co PLC filed Critical Morgan Crucible Co PLC
Priority to GB1504933A priority Critical patent/GB420368A/en
Publication of GB420368A publication Critical patent/GB420368A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K19/00—Non-propelling pencils; Styles; Crayons; Chalks
    • B43K19/16—Making non-propelling pencils

Landscapes

  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

Pencil-lead sheaths are made from a paste obtained by incorporating wood fibre with a solution of a cellulose derivative, and if necessary evaporating a portion of the solvent, the paste being moulded to shape by extrusion &c. The wood fibres used have a length at least four times the diameter and not less than 0,25 mm. Cellulose acetate, for example, dissolved in acetone, together with a plasticizer, and optionally a natural or synthetic resin as a cohesive, is mixed with wood fibre in a vacuum mixer, and the solvent is evaporated off till a stiff dough is obtained. After moulding the remaining solvent is evaporated. Hardening agents, accelerators, retarders, and colouring matter may be included in the composition. According to the Provisional Specification other plastics such as casein and natural or synthetic resins may be used as the binder, and fillers such as china clay may be added, and the sheaths may be applied to coloured pencils and crayons.
GB1504933A 1933-05-24 1933-05-24 Improvements in or relating to the manufacture of pencils and the like Expired GB420368A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1504933A GB420368A (en) 1933-05-24 1933-05-24 Improvements in or relating to the manufacture of pencils and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1504933A GB420368A (en) 1933-05-24 1933-05-24 Improvements in or relating to the manufacture of pencils and the like

Publications (1)

Publication Number Publication Date
GB420368A true GB420368A (en) 1934-11-26

Family

ID=10052127

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1504933A Expired GB420368A (en) 1933-05-24 1933-05-24 Improvements in or relating to the manufacture of pencils and the like

Country Status (1)

Country Link
GB (1) GB420368A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2234737A1 (en) * 1971-07-16 1973-02-15 Hasbro Industries Inc DIMENSIONS FOR EXTRUDING A SPITABLE COAT AROUND A MARKING CORE
DE2337635A1 (en) * 1973-04-06 1974-10-24 Hasbro Industries Inc DIMENSIONS FOR EXTRUDING A SPITABLE COAT AROUND A MARKING CORE
WO1991011335A1 (en) * 1990-02-04 1991-08-08 J.S. Staedtler Gmbh & Co. Writing or drawing crayon and process for manufacturing it
WO2000027611A1 (en) * 1998-11-11 2000-05-18 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method for producing a rod-shaped composite part and rod-shaped composite part
CN103253445A (en) * 2012-02-16 2013-08-21 真彩文具股份有限公司 Method for manufacturing artistic oil painting stick outer membrane not apt to stain hands
ITMI20120254A1 (en) * 2012-02-21 2013-08-22 Chromavis Spa PENCIL FOR MAKEUP
CN112853821A (en) * 2021-01-12 2021-05-28 正业包装（中山）有限公司 Paper pulp molding product with high tensile strength and high tearing resistance and preparation process thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2234737A1 (en) * 1971-07-16 1973-02-15 Hasbro Industries Inc DIMENSIONS FOR EXTRUDING A SPITABLE COAT AROUND A MARKING CORE
DE2337635A1 (en) * 1973-04-06 1974-10-24 Hasbro Industries Inc DIMENSIONS FOR EXTRUDING A SPITABLE COAT AROUND A MARKING CORE
WO1991011335A1 (en) * 1990-02-04 1991-08-08 J.S. Staedtler Gmbh & Co. Writing or drawing crayon and process for manufacturing it
WO2000027611A1 (en) * 1998-11-11 2000-05-18 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method for producing a rod-shaped composite part and rod-shaped composite part
US6478494B1 (en) 1998-11-11 2002-11-12 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V Method for producing a rod-shaped composite part and rod-shaped composite part
CN103253445A (en) * 2012-02-16 2013-08-21 真彩文具股份有限公司 Method for manufacturing artistic oil painting stick outer membrane not apt to stain hands
ITMI20120254A1 (en) * 2012-02-21 2013-08-22 Chromavis Spa PENCIL FOR MAKEUP
CN112853821A (en) * 2021-01-12 2021-05-28 正业包装（中山）有限公司 Paper pulp molding product with high tensile strength and high tearing resistance and preparation process thereof

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