GB1341571A - - Google Patents

Info

Publication number
GB1341571A
GB1341571A GB3149871A GB3149871A GB1341571A GB 1341571 A GB1341571 A GB 1341571A GB 3149871 A GB3149871 A GB 3149871A GB 3149871 A GB3149871 A GB 3149871A GB 1341571 A GB1341571 A GB 1341571A
Authority
GB
United Kingdom
Prior art keywords
extrusion
ink
diameter
writing tip
tip
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
GB3149871A
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 filed Critical
Publication of GB1341571A publication Critical patent/GB1341571A/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
    • B43K1/00—Nibs; Writing-points
    • B43K1/003—Capillary nibs
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pens And Brushes (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

1341571 Reservoir pens GILLETTE CO 5 July 1971 [9 July 1970] 31498/71 Heading B6P [Also in Division B5] A writing tip 10 for a pen having an ink reservoir filler of porous absorbent material is composed of a homogeneous mass of thermoplastics material, e.g. polyacrylonitrile, polymethylmethacrylate, polyoxymethylene, nylon, polyethyleneterephthalate, polypropylene and copolymers thereof, the writing tip having an axial, open-ended ink-conveying channel 14 and a plurality of longitudinally extending parallel multi-lobed ink-conveying channels 15, 16 circumaxially spaced in circular array around the axial channel. The tip is manufactured by melting and extruding the polymer through a die having a discharge orifice whose maximum diameter is 7 to 15 times the diameter of the writing tip and which includes a plurality of mandrels in circumaxial spaced relation to an axially positioned mandrel, gently drawing the extrusion while cooling to a plastic stage in a quenching bath to reduce the diameter of the extrusion to between 25 and 50% of the extrusion orifice size, cooling the drawn extrusion to below the plastic temperature stage in a quenching bath and subjecting the extrusion to further drawing under tension at a temperature below the melting point of the polymer to further reduce the transverse dimension of the extrusion to that desired in the final writing element.
GB3149871A 1970-07-09 1971-07-05 Expired GB1341571A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5357170A 1970-07-09 1970-07-09

Publications (1)

Publication Number Publication Date
GB1341571A true GB1341571A (en) 1973-12-25

Family

ID=21985171

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3149871A Expired GB1341571A (en) 1970-07-09 1971-07-05

Country Status (4)

Country Link
CA (1) CA938844A (en)
DE (1) DE2134669A1 (en)
FR (1) FR2101553A5 (en)
GB (1) GB1341571A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2459143A1 (en) * 1979-06-21 1981-01-09 Pentel Kk INSTRUMENT TO WRITE
US5672021A (en) * 1995-02-10 1997-09-30 Avery Dennison Corporation Fibrous nib for use in a capillary feed marker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2459143A1 (en) * 1979-06-21 1981-01-09 Pentel Kk INSTRUMENT TO WRITE
US5672021A (en) * 1995-02-10 1997-09-30 Avery Dennison Corporation Fibrous nib for use in a capillary feed marker

Also Published As

Publication number Publication date
CA938844A (en) 1973-12-25
FR2101553A5 (en) 1972-03-31
DE2134669A1 (en) 1972-01-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees