ES2122039T3 - Lapiz y procedimiento para fabricar lapices. - Google Patents

Lapiz y procedimiento para fabricar lapices.

Info

Publication number
ES2122039T3
ES2122039T3 ES93920719T ES93920719T ES2122039T3 ES 2122039 T3 ES2122039 T3 ES 2122039T3 ES 93920719 T ES93920719 T ES 93920719T ES 93920719 T ES93920719 T ES 93920719T ES 2122039 T3 ES2122039 T3 ES 2122039T3
Authority
ES
Spain
Prior art keywords
polistirol
mine
pencil
talco
filled
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 - Lifetime
Application number
ES93920719T
Other languages
English (en)
Inventor
Burkhard Metzger
Hans Joachim Ziolkowski
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.)
Bellaform Extrusionstechnik GmbH
Original Assignee
Bellaform Extrusionstechnik GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6467978&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2122039(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Bellaform Extrusionstechnik GmbH filed Critical Bellaform Extrusionstechnik GmbH
Application granted granted Critical
Publication of ES2122039T3 publication Critical patent/ES2122039T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • 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
    • B43K19/02—Pencils with graphite; Coloured pencils
    • 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
    • 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
    • B43K19/18—Making pencil writing-cores
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

EN UN LAPIZ CONSISTENTE EN UNA MINA SOLIDA Y EN UN REVESTIMIENTO PARA LA MINA, EL AGLUTINANTE UTILIZADO PARA EL REVESTIMIENTO ES POLISTIROL. ADEMAS EL MATERIAL DE REVESTIMIENTO CONTIENE LDPE RELLENO DE TALCO, MEJORANDO ASI LA CAPACIDAD DE AFILAMIENTO DEL MISMO Y SU ADHERENCIA A LA MINA. TAMBIEN SE PROPONE LE USO DE POLISTIROL RELLENO DE TALCO. LA PROPORCION DE POLISTIROL ESTA ENTRE UN 60 Y UN 70% EN PESO DEL LDPE RELLENO DE TALCO ENTRE UN 20 Y UN 40% EN PESO. EL POLISTIROL ESTANDAR O HIPS TAMBIEN SE USA PARA LA MINA. TANTO EL MATERIAL DE REVESTIMIENTO COMO LA MINA SE MOLDEAN POR EXTRUSION, AÑADIENDO AL POLISTIROL UN AGENTE EXPANSOR ENDOTERMICO, SOLO CUANDO ESTE ESTA YA EN EL EXTRUSOR.
ES93920719T 1992-09-15 1993-09-14 Lapiz y procedimiento para fabricar lapices. Expired - Lifetime ES2122039T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4230792A DE4230792C2 (de) 1992-09-15 1992-09-15 Schreibstift und Verfahren zu seiner Herstellung

Publications (1)

Publication Number Publication Date
ES2122039T3 true ES2122039T3 (es) 1998-12-16

Family

ID=6467978

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93920719T Expired - Lifetime ES2122039T3 (es) 1992-09-15 1993-09-14 Lapiz y procedimiento para fabricar lapices.

Country Status (5)

Country Link
EP (1) EP0612341B1 (es)
JP (1) JPH07504627A (es)
DE (2) DE4230792C2 (es)
ES (1) ES2122039T3 (es)
WO (1) WO1994006875A1 (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19855325C2 (de) * 1997-12-02 2002-11-21 Faber Castell A W Ummantelung für Farb-, Blei- und Kosmetikminen
GB9916461D0 (en) * 1999-07-14 1999-09-15 Remarkable Pencils Limited Apparatus and method for extruding pencils
DE50202120D1 (de) * 2002-08-29 2005-03-03 Kum Ltd Selbstreinigender Stift
JP5219341B2 (ja) * 2006-03-14 2013-06-26 三菱鉛筆株式会社 鉛筆芯及びその製造方法
JP2009201680A (ja) * 2008-02-27 2009-09-10 Tokiwa Corp 筒状樹脂軸の製造方法
DE102008034015B4 (de) 2008-07-15 2011-08-25 J. S. Staedtler GmbH & Co. KG, 90427 Schreib-, Zeichen-, Mal- oder Kosmetikstift
DE202008009751U1 (de) 2008-07-15 2009-08-27 J. S. Staedtler Gmbh & Co. Kg Schreib-, Zeichen-, Mal- oder Kosmetikstift
DE102013020666B4 (de) 2013-11-29 2017-09-14 Staedtler Mars Gmbh & Co. Kg Bleimine für Schreib-, Zeichen- und/oder Malgeräte sowie Verfahren zu deren Herstellung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744306C (de) * 1941-01-07 1944-01-13 Staedtler Fa J S Verfahren zur Herstellung von ungebrannten, feuchtigkeitsbestaendigen Schreib- und Zeichenminen
DE1794348C2 (de) * 1967-10-04 1974-08-01 Bayer Ag, 5090 Leverkusen Schreibstifte. Ausscheidung aus: 1561767
JPS527227Y2 (es) * 1974-09-06 1977-02-16
CS193772B1 (en) * 1977-01-26 1979-11-30 Jan Ruzicka Mixture especially for jacketing the lead
JPS63276262A (ja) * 1987-05-07 1988-11-14 Mitsubishi Electric Corp 半導体装置
DE3817807A1 (de) * 1988-05-26 1990-02-01 Meffert Hans Joachim Kontinuierliche extrusion von plastik-bleiminen
DE4109322C1 (en) * 1991-03-21 1993-01-07 Solmex Ag, Zug, Ch Extrudable coating material for pencil - contg. polystyrene, polyethylene@, calcium stearate, talc, plaster and coupling agent

Also Published As

Publication number Publication date
DE4230792C2 (de) 1996-12-12
DE4230792A1 (de) 1994-03-17
DE59308891D1 (de) 1998-09-24
JPH07504627A (ja) 1995-05-25
EP0612341B1 (de) 1998-08-19
WO1994006875A1 (de) 1994-03-31
EP0612341A1 (de) 1994-08-31

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