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
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.
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)
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 |
-
1971
- 1971-07-02 CA CA117285A patent/CA938844A/en not_active Expired
- 1971-07-05 GB GB3149871A patent/GB1341571A/en not_active Expired
- 1971-07-08 DE DE19712134669 patent/DE2134669A1/en active Pending
- 1971-07-09 FR FR7125348A patent/FR2101553A5/fr not_active Expired
Cited By (2)
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 |