GB1240852A - An improved pencil and a process for the continuous production of such pencils - Google Patents

An improved pencil and a process for the continuous production of such pencils

Info

Publication number
GB1240852A
GB1240852A GB45223/68A GB4522368A GB1240852A GB 1240852 A GB1240852 A GB 1240852A GB 45223/68 A GB45223/68 A GB 45223/68A GB 4522368 A GB4522368 A GB 4522368A GB 1240852 A GB1240852 A GB 1240852A
Authority
GB
United Kingdom
Prior art keywords
styrene
acrylonitrile
sheath
lead
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
GB45223/68A
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of GB1240852A publication Critical patent/GB1240852A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C09D13/00—Pencil-leads; Crayon compositions; Chalk compositions
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/32—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
    • B29C44/322—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed parts being elongated inserts, e.g. cables
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • B29C44/507—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying extruding the compound through an annular die
    • 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
    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • 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
    • C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
    • 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
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B29K2105/043—Skinned foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/725—Drawing or writing equipment
    • B29L2031/7254—Pencils

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

1,240,852. Pencils. FARBENFABRIKEN BAYER A.G. 24 Sept., 1968 [4 Oct., 1967], No. 45223/68. Heading B6P. A pencil has a sheath comprising a foamed thermoplastic moulding composition, the foam having a density of from 0À3 to 0À7 g./c.c. The pencil may be formed by passing a lead through the inner nozzle of a reversal-type extruder whilst the outer nozzle is used to guide and form the surrounding, expandible thermoplastic composition. The lead may contain a thermoplastic composition as binder and may be formed in an extruder which directly applies the sheath as above. The foamed thermoplastic moulding composition may comprise polystyrene; copolymers of styrene with other vinyl or vinylidene monomers (e.g. acrylonitrile or methyl methacrylate); polymethyl methacrylate; polyvinyl chloride; polyvinyl chloride modified with monomeric or polymeric plasticizers; cellulose esters modified with plasticizers; rubber-modified polystyrenes with a styrene content of at least 50% by weight. In a preferred embodiment the moulding compositions comprise copolymer mixtures of polymers of acrylonitrile, butadiene and styrene (ABS-polymers). According to examples, the moulding composition may comprise (A) an elastomeric butadiene polymer with optionally copolymerized styrene, isoprene, acrylonitrile or a lower alkyl ester of acrylic acid or methacrylic acid, together with (B) polymerized styrene and acrylonitrile, the two monomer components being replaceable either wholly or in part by their alkyl derivatives or by methyl methacrylate. The binder for the lead may comprise (C) a graft polymer of ethylene/vinyl acetate copolymer and possibly also a grafted-on vinyl chloride together with (D) a polymer mixture as in (A) and (B) above. The foaming agents may be azodicarbonamide and sulphohydrazide-based agents. The lead may contain graphite. The moulding composition used for the sheath may contain anti-static agents and the finished sheath may be polished by immersion in a solvent, e.g. methyl ethyl ketone.
GB45223/68A 1967-10-04 1968-09-24 An improved pencil and a process for the continuous production of such pencils Expired GB1240852A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19671561767 DE1561767B1 (en) 1967-10-04 1967-10-04 Pen

Publications (1)

Publication Number Publication Date
GB1240852A true GB1240852A (en) 1971-07-28

Family

ID=5677631

Family Applications (1)

Application Number Title Priority Date Filing Date
GB45223/68A Expired GB1240852A (en) 1967-10-04 1968-09-24 An improved pencil and a process for the continuous production of such pencils

Country Status (12)

Country Link
US (1) US3704071A (en)
JP (1) JPS4813368B1 (en)
AT (1) AT296467B (en)
BE (1) BE721839A (en)
CH (1) CH523791A (en)
DE (1) DE1561767B1 (en)
DK (1) DK131277B (en)
FR (1) FR1588294A (en)
GB (1) GB1240852A (en)
NL (1) NL6814263A (en)
NO (1) NO134060C (en)
SE (1) SE346086B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5244297A (en) * 1991-03-19 1993-09-14 Conte S.A. Process for manufacturing pencil by tri-extrusion and the produced pencil having an intermediate protective casing

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983195A (en) * 1971-07-16 1976-09-28 Hasbro Industries, Inc. Pencil sheath compositions, method for making pencils
FR2187552A1 (en) * 1971-07-16 1974-01-18 Hasbro Industries Inc Extrudable pencil casing
US3993408A (en) * 1971-07-16 1976-11-23 Hasbro Industries, Inc. Pencil comprising a marking core and a porous resin sheath
CA1005200A (en) * 1971-07-16 1977-02-08 Hasbro Industries Pencil sheath compositions, method and apparatus for making pencils, and the resulting product
US3936519A (en) * 1974-04-24 1976-02-03 Milton Crystal Method of extruding foamed plastic sheathed pencils
JPS527227Y2 (en) * 1974-09-06 1977-02-16
US4413921A (en) * 1978-09-05 1983-11-08 Revlon, Inc. Cosmetic pencil having a sharpenable polyethylene casing
US5360281A (en) * 1990-11-15 1994-11-01 Revlon Consumer Products Corporation Cosmetic pencil and method for making the same
FR2674179B1 (en) * 1991-03-19 1994-11-10 Conte PROCESS OF MANUFACTURING BY TRI-EXTRUSION OF A PENCIL TO BE WRITTEN OR TO COLORED AND PENCIL TO BE WRITTEN OR TO COLORED COMPRISING AN INTERMEDIATE SHELL FOR PROTECTING THE MINE.
US5531947A (en) * 1992-09-15 1996-07-02 Bellaform Extrusionstechnik Gmbh Process and installation for the manufacture of pencils
US5735622A (en) * 1995-12-14 1998-04-07 Pentech International Inc. Writing instrument with a compressible friction coating and method of making
CH691046A5 (en) * 1996-06-05 2001-04-12 Veka Ag Thermoplastic material for use in baths and whirlpool tubs, cars, wall coverings and pay phone hoods consists at least partly of poly (vinyl chloride) foam
ATE373571T1 (en) * 1997-07-29 2007-10-15 Solution Line Inc PEN MADE OF REGENERATED RUBBER
EP0936082A1 (en) 1998-02-13 1999-08-18 Hudson ICS Pencil blanks and methods for making same
US6062753A (en) * 1998-08-17 2000-05-16 Pentech International Inc. Writing instrument with enhanced tactile control and gripping comfort and method of making same
US20070092701A1 (en) * 2005-10-11 2007-04-26 Jeng Jong P Building material having a fluorocarbon based capstock layer and process of manufacturing same with less dimensional distortion
GB9916461D0 (en) * 1999-07-14 1999-09-15 Remarkable Pencils Limited Apparatus and method for extruding pencils
FR2802148B1 (en) 1999-12-13 2003-01-24 Conte PROCESS FOR THE MANUFACTURE BY TRI-EXTRUSION OF A PENCIL TO BE WRITING OR TO BE COLORED AND THE PENCIL TO BE WRITING OR TO BE COLORED COMPRISING A PROTECTIVE INTERMEDIATE LAYER
JP2001224428A (en) * 2000-02-14 2001-08-21 Tokiwa Corp Pencil type cosmetic
AT412627B (en) * 2001-04-18 2005-05-25 Vladimir Kralj WRITING HELP
US6565275B2 (en) 2001-04-27 2003-05-20 Binney & Smith Inc. Marker with eraser
US6505984B2 (en) * 2001-04-27 2003-01-14 Binney & Smith Inc. Crayon with eraser
US6547465B1 (en) 2002-01-22 2003-04-15 Shoot The Moon Products Ii, Llc Pencil with exposable eraser
US6752941B2 (en) * 2002-03-14 2004-06-22 Certainteed Corporation Additives for special effect appearances in plastic parts
US6935800B2 (en) * 2002-10-09 2005-08-30 Cosmolab, Inc. Marking instrument and cosmetic pencil
US20040126556A1 (en) * 2002-12-27 2004-07-01 Nowak Michael T. Grip element
EP2390294A1 (en) * 2010-05-26 2011-11-30 Université Catholique De Louvain Pencils, method of preparation and use
US8998519B2 (en) 2013-05-13 2015-04-07 Hemant Patel Process and formulation for a plastic pencil
DE102013020666B4 (en) * 2013-11-29 2017-09-14 Staedtler Mars Gmbh & Co. Kg Lead fines for writing, drawing and / or painting equipment and methods of making the same
FR3052705B1 (en) * 2016-06-21 2018-07-13 Conte PENCIL TO WRITE OR COLOR
US10849404B2 (en) 2016-08-26 2020-12-01 A.W. Faber-Castell Cosmetics Gmbh Pencil comprising an integrally injection-moulded layered casing
DE102016115872B4 (en) * 2016-08-26 2018-03-15 A.W. Faber-Castell Cosmetics Gmbh Pin with integral injection-molded layer sleeve
EP3847039A1 (en) * 2018-09-07 2021-07-14 Société BIC Body for a writing, tracing, drawing or coloring pencil
WO2020127320A1 (en) * 2018-12-18 2020-06-25 Societe Bic Lead casing for pencil, and pencil thereof for writing, drawing, marking, plotting, and coloring
BR112021010572B1 (en) 2018-12-18 2023-10-03 Societe Bic CORE CASING FOR PENCILS, AND PENCILS THEREOF FOR WRITING, DRAWING, MARKING, TRACING AND COLORING
EP3898258B1 (en) * 2018-12-18 2023-01-25 Société BIC Lead casing for pencil, and pencil thereof for writing, drawing, marking, plotting, and coloring

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE346738A (en) * 1926-11-13 1900-01-01
BE346739A (en) * 1926-11-13
NL24105C (en) * 1927-08-31
US1937104A (en) * 1932-03-03 1933-11-28 Joseph Dixon Crucible Co Method of making pencils
US2408398A (en) * 1943-07-24 1946-10-01 Theodore L Johnson Multiple extrusion
DE940492C (en) * 1945-09-01 1956-03-22 Zareh Dr Lorenian Method and device for wrapping writing leads with a plastic mass
NL80121C (en) * 1948-06-28 1900-01-01
FR969976A (en) * 1948-07-01 1950-12-28 Making a pencil with a lead and synthetic plastics
DE917771C (en) * 1951-12-29 1954-09-09 Max Schmidt pencil
GB794400A (en) * 1955-08-01 1958-04-30 Us Rubber Co Improvements in rubber-and-resin compositions
US2960967A (en) * 1955-08-10 1960-11-22 Howard M Bauserman Extruded plastic lead pencils
DE1244398B (en) * 1963-07-11 1967-07-13 Bayer Ag Antistatic thermoplastic molding compounds
JPS4819725B1 (en) * 1967-04-18 1973-06-15

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5244297A (en) * 1991-03-19 1993-09-14 Conte S.A. Process for manufacturing pencil by tri-extrusion and the produced pencil having an intermediate protective casing

Also Published As

Publication number Publication date
CH523791A (en) 1972-06-15
JPS4813368B1 (en) 1973-04-26
DE1561767B1 (en) 1972-07-06
NO134060C (en) 1976-08-11
NO134060B (en) 1976-05-03
DK131277B (en) 1975-06-23
DK131277C (en) 1975-11-24
US3704071A (en) 1972-11-28
SE346086B (en) 1972-06-26
FR1588294A (en) 1970-04-10
AT296467B (en) 1972-02-10
BE721839A (en) 1969-03-14
NL6814263A (en) 1969-04-09

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