WO2000069654A1 - Pointe d'ecriture et procedes de traitment d'un element longiforme destine a former une telle pointe d'ecriture - Google Patents
Pointe d'ecriture et procedes de traitment d'un element longiforme destine a former une telle pointe d'ecriture Download PDFInfo
- Publication number
- WO2000069654A1 WO2000069654A1 PCT/FR2000/001294 FR0001294W WO0069654A1 WO 2000069654 A1 WO2000069654 A1 WO 2000069654A1 FR 0001294 W FR0001294 W FR 0001294W WO 0069654 A1 WO0069654 A1 WO 0069654A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- writing
- elongated element
- sealing agent
- thickness
- pores
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K1/00—Nibs; Writing-points
- B43K1/12—Writing-points comprising fibres; Felt pads
Definitions
- the present invention relates to the field of writing articles, more particularly writing tips of high porosity ensuring the transfer of ink from a liquid ink reservoir or a fibrous reservoir to the end of said point acting as a writing head.
- the writing tip is necessarily projecting from the body of the article held by the user when writing.
- the ink consumed on the support is gradually replaced by ink coming from the reservoir and transferred by capillarity into the writing tip.
- a cap is fitted onto the body of the article, so as to cover the writing tip, on the one hand to protect it from possible shocks and on the other hand to avoid its drying. Indeed, if the projecting end of the writing tip remains in the open air, the ink solvent which is in this end evaporates while the ink pigments remain there. This phenomenon can be prohibitive in the sense that the reuse of the article can pose difficulties, or even be impossible even if a large quantity of ink remains in the reservoir.
- a first solution approach consists in modifying the composition of the ink, by adding film-type additives. During the evaporation of the solvent, a film is formed on the surface of the writing tip which limits the continuation of the evaporation, a film of very low mechanical resistance, so that this film is eliminated when the user applies again the writing tip on the support. It is a comparable approach which was adopted in the document J 5401 9826 which provides for the coating of the writing tip with a high polymer impermeable to gases and easily peelable. It may, for example, be a copolymer resin of vinyl chloride and vinyl acetate or an EVA copolymer resin.
- such a coating is provided only to prevent the evaporation of the ink and the drying of the tip during storage and transport of the writing articles, knowing that the coating of high polymer can be easily removed before use.
- the first goal that the applicant has set is to propose a writing tip, which overcomes the aforementioned drawback by significantly increasing the possible duration of stay in the open air of said writing tip without prohibitive effects for use of the article.
- This object is perfectly achieved by the writing tip which in known manner consists of a section of a long member of a material of high porosity, with at least one first end shaped as the writing head.
- the pores and / or capillaries of said material are closed to a thickness e limited on the longitudinal outer periphery of the elongate element with the exception of the first end.
- the thickness e is of the order of 0.0 1 to 1 mm.
- the writing tip comprises a sealing agent which closes the pores and / or the capillaries of said material over said thickness e.
- the sealing agent can also be a formaldehyde melamine.
- the sealing agent may be either a melamine with acid catalysis either a urea-formaldehyde melamine or a two-component epoxy resin or a two-component polyurethane resin.
- the elongated element being made of a heat-fusible material
- the sealing of the pores and / or of the capillaries is obtained by localized thermofusion of said material on said thickness e.
- This second variant applies in particular when the elongated element consists of sintered micro-balls.
- the method according to the invention consists in impregnating a coherent elongated element of high porosity, continuously, with a clogging bath whose clogging agent is inert with respect to the components of the ink. , under conditions, in particular of concentration, surface tension, viscosity and time, such that said bath diffuses into the elongated element over a limited thickness e of its periphery and to achieve hardening of the sealing agent.
- the writing tip from the elongated element, it will be cut into sections and each section will be machined at least at the end intended to form the writing head. In doing so, the central areas of the cut and machined ends are free of clogging agent and allow normal ink transfer.
- the sealing agent has closed the pores or capillaries on the surface of the elongate element, which creates a barrier for the evaporation of the solvent from the ink.
- Most writing tips are made from fibers which are in the form of a cable or ribbon and which are joined and glued together by a binder to form a coherent longiform element, called rod.
- the binder is used in the process of the invention as a clogging agent.
- Binders used to form spikes writing from fibers are well known. There is therefore no risk of choosing as binding agents such binders with regard to the stability over time and the inertia vis-à-vis the ink.
- the compound acting as a binder and clogging agent is preferably an acid catalyzed melamine.
- the curing of the sealing agent is generally obtained by a simple heat treatment (heating or cooling) of the elongated element, after the impregnation operation.
- the method of the invention consists in carrying out a thermal shock on the longitudinal periphery of the elongated element or of the section of elongated element except for the first end shaped as a writing head, so to obtain localized hot-melt of the hot-melt material over the thickness e.
- this thermal shock depends on the material of the elongated element. As it is in particular a elongated element made of polypropylene microbeads, the thermal shock is carried out at a temperature of between 200 and 300 ° C. for a period of 1 to 10 seconds.
- FIG. 1 is a schematic representation of an installation implementing said method and, - Figure 2 is a perspective representation of a writing tip obtained from the rod thus treated.
- the ink is transferred by a coherent elongated element of high porosity, making it possible to transfer, thanks to its capillarity, the ink from the reservoir to the writing head progressively consumption of it.
- this writing tip is produced from a cable of continuous filaments or a ribbon of discontinuous fibers, in particular acrylic juxtaposed and linked to each other to form a coherent rod.
- This continuous rod is cut to form sections of determined length, at least one end of which is machined to form the writing head.
- the conditions of this machining depend on the type of writing article envisaged. It can be a machining in double bevel and with rounded end as in the document EP 0 857 586 or any other suitable form.
- the ink which is consumed by depositing on the writing medium is gradually replaced by the ink which diffuses in the writing tip, through the pores and capillaries.
- an adequate treatment of the rod is carried out in which the writing tips will be cut so as to limit the prohibitive phenomenon of drying of the tip when the article remains uncapped, that is to say when the writing tip remains in the open air for a significant period, several hours or even several days.
- the treatment of the invention consists in impregnating the continuously moving rod with a treatment bath containing a clogging agent.
- clogging agent is understood to mean a compound capable of filling the pores or capillaries of the material constituting the cable in such a way that, after hardening of said compound, the pores or capillaries are blocked and a barrier substantially impermeable to air is created, preventing or limiting the evaporation of the solvent from the ink.
- the rod After having been impregnated, the rod therefore undergoes a complementary operation which hardens the sealing agent. This operation depends on the type of compound used as a sealing agent in the treatment bath. It is generally a heat treatment requiring a supply of heat, to evaporate the solvent from the bath or to crosslink or to polymerize the sealing agent or else requiring cooling when the sealing agent is for example a paraffin applied hot.
- the operating conditions under which the impregnation is carried out must be determined so that the diffusion of the plugging agent takes place over a limited thickness e of the outer longitudinal periphery of the cable.
- the thickness e must be sufficient for the capillary or porous surface network to be well sealed and to create this barrier phenomenon. It is not desirable for this thickness e to be significant insofar as the presence of the sealing agent reduces the efficiency of the rod all the more as regards its primary function which is to transfer the ink by capillarity.
- the thickness e of diffusion of the sealing agent should be between 0.01 and 0.5 mm .
- FIG. 1 the two treatment phases of the invention are shown very schematically by means of a device 1 successively comprising, on the path of the rod 2, an impregnation head 3 and a hardening oven 4.
- the impregnation head consists of a tank 5, containing the treatment bath 6.
- the two vertical walls 7, 7 'facing each other of the tank 5 are pierced with two openings 8, 8' exactly shaped like the cross section of the rod 2.
- Each opening 8, 8 ' is extended outwards by a shoulder 9, 9', in particular annular when the cross section of the rod is circular.
- the implementation of the process is done by introducing the rod 2 through the shoulders 9, 9 'and the openings 8, 8' of the impregnation head and through the openings 10, 10 'of the hardening oven 4.
- the rod is continuously pulled through the impregnation head 3 and the hardening oven 4.
- the dimension of the openings 8, 8 ′ and the shoulders 9, 9 ′ is adjusted to the cross section of the ring 2 so that the ring 2 forms itself, with the inner wall of the shoulders 9 , 9 ', a seal, preventing direct exit from the treatment bath 6.
- the treatment bath 6 naturally diffuses through the pores and capillaries located at the longitudinal outer periphery of the rod 2. This diffusion takes place over a thickness e.
- the sealing agent which is contained in the treatment bath and which has diffused over this thickness is then hardened due to the passage of the cable 2 in the hardening oven 4.
- the sealing agent has the function of closing off the pores and / or capillaries which are on the outer surface periphery of the cable 2.
- This sealing agent must imperatively be insoluble and chemically inert with respect to the various constituents of the ink which will be used. in the writing article, and in particular the solvent for this ink. It can be a paraffin with a very high melting point, for example with a grade at 67-70 ° C, which will be used in a writing article with alcohol-based ink. It could be a two-component epoxy or polyurethane resin.
- the rod 2 when the rod 2 is made from fibers which are linked together, it is implemented as clogging agent for the same compound used as a fiber binder.
- the rod 2 'obtained at the outlet of the hardening furnace is cut into sections of length L, each section being intended to constitute a writing tip 1 1, as illustrated in FIG. 2.
- the front end 1 2 of the tip 1 1 has been machined to form the writing head 13, the rear end 14 resulting from the transverse cutting of the rod 2 '.
- the front end 12 is cut at a bevel, with the rounded end forming the writing head 13.
- the writing tip 1 1 therefore comprises a cylindrical rear portion 1 6 and a converging front portion 1 7, terminated by the head d 'writing 1 3.
- the pores or capillaries located on the outer periphery are clogged with a clogging agent 15 over a thickness e.
- the tip 1 1 is filled with ink, in a known manner, in the capillaries of the central non-clogged area of the fibers.
- This central zone 1 8 extends from the rear end 14 to the writing head 13.
- This central zone 18 is surrounded, in the rear cylindrical portion 16, by the external peripheral zone 19 in which the clogging agent 1 5, this peripheral zone creating a barrier substantially impermeable to air, preventing or limiting the evaporation of the solvent from the ink.
- the rear end 14 is directly in contact with the ink of the reservoir which diffuses by capillary action through the unclogged fibers of the central zone 1 8 to the writing head 1 3.
- the converging front portion 1 7 comprises fibers soaked in ink which can be directly outdoors. It is up to a person skilled in the art to choose the mode of machining of this portion 1 7 so as to limit its surface for exchange with the open air while keeping an acceptable writing head 13.
- the sealing agent 1 5 is preferably an acid catalyzed melamine formaldehyde, which is also used as a binder of acrylic fibers together in the formation of rod 2. It may be a melamine formaldehyde containing 90% of dry extracts, for example marketed by the company HOECHST in the range called MAPRENAL or by the company MONSANTO in the range called RESIMENE.
- melamine formaldehyde speed of movement of the rod of 30 cm / min for an impregnation length of 3 cm, ambient temperature, viscosity of the bath adjusted with thixotropic agents (bentonite, silica or polyurethane thickener) at around 10,000 cPo, surface tension of the bath from 23 to 25 dynes / cm.
- thixotropic agents bentonite, silica or polyurethane thickener
- the sealing agent is preferably an acid-catalyzed melamine, a urea-formaldehyde melamine, a two-component epoxy resin or a two-component polyurethane resin.
- the writing tip is made from sintered micro-balls.
- the microbeads are placed in a mold whose internal configuration is that which is sought for the writing tip and the sintering is obtained by an adequate heat treatment making it possible to achieve by bonding between the various microbeads the desired microporous structure.
- the method for processing the invention consists in carrying out a thermal shock on the section of elongated element, except for the first end shaped as a writing head and the transverse face of the second end, so as to obtain the localized thermofusion of the micro- balls at the longitudinal periphery of the section over a limited thickness e.
- the operating conditions of this thermal shock are determined so that the localized thermofusion of the micro-beads makes it possible to obtain a filling of the surface pores of the elongate element. In this case, therefore, there is no addition of a clogging agent but use of the material constituting the micro-beads as a clogging agent for surface pores.
- the thermal shock was carried out at a temperature between 2OO and 3OO ° C, preferably of the order of 27O ° C, for a period of 1 to 10 s , preferably around 5 s.
- the localized thermofusion on the surface of the microbeads has the secondary technical effect of an increase in the mechanical resistance of the elongate element.
- being a long-shaped element produced from sintered micro-balls its porosity was limited due to insufficient mechanical strength.
- By increasing the mechanical resistance thanks to the heat-fused peripheral zone it becomes possible to correlatively increase the porosity of the middle zone which ensures the transfer of the ink. This same result could possibly be obtained by implementing the method of the first variant, namely the impregnation of a sealing agent.
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- Pens And Brushes (AREA)
- Moulding By Coating Moulds (AREA)
- Golf Clubs (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60001404T DE60001404T2 (de) | 1999-05-14 | 2000-05-12 | Schreibspitze und verfahren zur behandlung eines länglichen elementes für die herstellung einer solchen schreibspitze |
US10/009,885 US6893181B1 (en) | 1999-05-14 | 2000-05-12 | Nib and methods of treating an elongate element designed to form such a nib |
JP2000618094A JP4928669B2 (ja) | 1999-05-14 | 2000-05-12 | ペン先及びそのペン先を形成するように構成された長手部材の処理方法 |
BRPI0010415-9A BR0010415B1 (pt) | 1999-05-14 | 2000-05-12 | ponta de caneta e processos de tratamento de um elemento longiforme destinado a formar essa ponta. |
MXPA01011540A MXPA01011540A (es) | 1999-05-14 | 2000-05-12 | Punta para escritura y procedimientos de tratamiento de un elemento longitudinal dstinado a formar tal punta para escritura. |
CA002370903A CA2370903C (fr) | 1999-05-14 | 2000-05-12 | Pointe d'ecriture et procedes de traitement d'un element longiforme destine a former une telle pointe d'ecriture |
AU47635/00A AU762571B2 (en) | 1999-05-14 | 2000-05-12 | Nib for writing and methods for treating a longitudinal element from which a writing nib of this type is to be formed |
EP00929613A EP1180073B1 (fr) | 1999-05-14 | 2000-05-12 | Pointe d'ecriture et procedes de traitment d'un element longiforme destine a former une telle pointe d'ecriture |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR99/06312 | 1999-05-14 | ||
FR9906312A FR2793426B1 (fr) | 1999-05-14 | 1999-05-14 | Procede de traitement d'un element longiforme destine a former une pointe d'ecriture et pointe d'ecriture obtenue |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000069654A1 true WO2000069654A1 (fr) | 2000-11-23 |
Family
ID=9545732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2000/001294 WO2000069654A1 (fr) | 1999-05-14 | 2000-05-12 | Pointe d'ecriture et procedes de traitment d'un element longiforme destine a former une telle pointe d'ecriture |
Country Status (12)
Country | Link |
---|---|
US (1) | US6893181B1 (fr) |
EP (1) | EP1180073B1 (fr) |
JP (1) | JP4928669B2 (fr) |
CN (1) | CN1160204C (fr) |
AU (1) | AU762571B2 (fr) |
BR (1) | BR0010415B1 (fr) |
CA (1) | CA2370903C (fr) |
DE (1) | DE60001404T2 (fr) |
ES (1) | ES2192176T3 (fr) |
FR (1) | FR2793426B1 (fr) |
MX (1) | MXPA01011540A (fr) |
WO (1) | WO2000069654A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003525152A (ja) * | 2000-03-02 | 2003-08-26 | コント | 筆記ポイントに乾燥遅延剤が備えられた筆記具および同筆記ポイントの製造方法 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR112013025992B1 (pt) * | 2011-06-03 | 2021-02-23 | Cytec Technology Corp | Agente de enchimento radial revestido deformável, método para formarum agente de enchimento radial revestido, e, pré-forma de fibra tridimensional |
CN103754004B (zh) * | 2014-01-23 | 2017-01-18 | 浙江奥捷实业有限公司 | 一种腈纶纤维笔头的制备方法 |
EP3753746B1 (fr) * | 2019-06-20 | 2024-07-24 | Société BIC | Crayon feutre pour écrire |
EP3771573A1 (fr) * | 2019-07-29 | 2021-02-03 | Société BIC | Recharge de crayon feutre d'écriture |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1418087A (fr) * | 1964-03-12 | 1965-11-19 | Dainihonbungu Co | Procédé de fabrication de mèche d'écriture pour porte-plume ainsi que la mèche conforme à celles obtenues, et le porte-plume équipé de ladite mèche |
FR1476355A (fr) * | 1965-04-22 | 1967-04-07 | Parker Pen Co | Procédé de production d'une mèche formée de fibres thermoplastiques, destinée à constituer une pointe de stylographe |
FR1550995A (fr) * | 1966-06-27 | 1968-12-27 | ||
GB1152342A (en) * | 1965-05-17 | 1969-05-14 | Scripto Inc | Improvements in and relating to Fountain Pens and Nibs and Ink therefor |
JPS5419826A (en) | 1977-07-12 | 1979-02-14 | Mitsubishi Pencil Co | Pen chip sealing method of marking pen |
EP0726166A1 (fr) * | 1995-02-07 | 1996-08-14 | Conte S.A. | Article d'écriture ou de coloriage à encre réalisé à partir d'un bloc compact en matériau poreux |
EP0857586A1 (fr) | 1997-02-06 | 1998-08-12 | Tombow Pencil Co., Ltd. | Pointe de stylo pout marqueur |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3442739A (en) * | 1965-06-02 | 1969-05-06 | Parker Pen Co | Fibrous wick |
US3556888A (en) * | 1967-06-23 | 1971-01-19 | Glastrusions | Pultrusion machine and method |
US3864183A (en) * | 1972-11-21 | 1975-02-04 | Tokyo Hat | Method for producing pen core from filament tows |
US4453849A (en) * | 1982-06-18 | 1984-06-12 | Fernandez Manuel J | Protective shield for a felt tip pen |
JPS606497A (ja) * | 1983-06-27 | 1985-01-14 | オーベクス株式会社 | 合成樹脂製ペン体の製造方法 |
JPS62236796A (ja) * | 1986-04-08 | 1987-10-16 | パイロツトインキ株式会社 | 繊維製高空隙ペン体及びその製造方法 |
JP2648941B2 (ja) * | 1988-10-08 | 1997-09-03 | 司フェルト商事株式会社 | 合成樹脂製筆記用ペン軸 |
JP2679956B2 (ja) * | 1995-03-29 | 1997-11-19 | 水野 宏 | 繊維製ペン先体用原棒及びその製造法並びにペン先体 |
JP3284337B2 (ja) * | 1997-08-20 | 2002-05-20 | 株式会社トンボ鉛筆 | マーキングペン用ペン先 |
JP4155660B2 (ja) * | 1999-03-30 | 2008-09-24 | 三菱鉛筆株式会社 | マーキングペン及びマーキングペンのペン芯からの結晶析出防止方法 |
JP2001047786A (ja) * | 1999-08-05 | 2001-02-20 | Teiboo Kk | ペン先の成形方法 |
-
1999
- 1999-05-14 FR FR9906312A patent/FR2793426B1/fr not_active Expired - Fee Related
-
2000
- 2000-05-12 MX MXPA01011540A patent/MXPA01011540A/es active IP Right Grant
- 2000-05-12 WO PCT/FR2000/001294 patent/WO2000069654A1/fr active IP Right Grant
- 2000-05-12 EP EP00929613A patent/EP1180073B1/fr not_active Expired - Lifetime
- 2000-05-12 BR BRPI0010415-9A patent/BR0010415B1/pt not_active IP Right Cessation
- 2000-05-12 CN CNB008075670A patent/CN1160204C/zh not_active Expired - Fee Related
- 2000-05-12 ES ES00929613T patent/ES2192176T3/es not_active Expired - Lifetime
- 2000-05-12 US US10/009,885 patent/US6893181B1/en not_active Expired - Fee Related
- 2000-05-12 CA CA002370903A patent/CA2370903C/fr not_active Expired - Fee Related
- 2000-05-12 JP JP2000618094A patent/JP4928669B2/ja not_active Expired - Fee Related
- 2000-05-12 AU AU47635/00A patent/AU762571B2/en not_active Ceased
- 2000-05-12 DE DE60001404T patent/DE60001404T2/de not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1418087A (fr) * | 1964-03-12 | 1965-11-19 | Dainihonbungu Co | Procédé de fabrication de mèche d'écriture pour porte-plume ainsi que la mèche conforme à celles obtenues, et le porte-plume équipé de ladite mèche |
FR1476355A (fr) * | 1965-04-22 | 1967-04-07 | Parker Pen Co | Procédé de production d'une mèche formée de fibres thermoplastiques, destinée à constituer une pointe de stylographe |
GB1152342A (en) * | 1965-05-17 | 1969-05-14 | Scripto Inc | Improvements in and relating to Fountain Pens and Nibs and Ink therefor |
FR1550995A (fr) * | 1966-06-27 | 1968-12-27 | ||
JPS5419826A (en) | 1977-07-12 | 1979-02-14 | Mitsubishi Pencil Co | Pen chip sealing method of marking pen |
EP0726166A1 (fr) * | 1995-02-07 | 1996-08-14 | Conte S.A. | Article d'écriture ou de coloriage à encre réalisé à partir d'un bloc compact en matériau poreux |
EP0857586A1 (fr) | 1997-02-06 | 1998-08-12 | Tombow Pencil Co., Ltd. | Pointe de stylo pout marqueur |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003525152A (ja) * | 2000-03-02 | 2003-08-26 | コント | 筆記ポイントに乾燥遅延剤が備えられた筆記具および同筆記ポイントの製造方法 |
JP4741773B2 (ja) * | 2000-03-02 | 2011-08-10 | コント | 筆記ポイントに乾燥遅延剤が備えられた筆記具および同筆記ポイントの製造方法 |
Also Published As
Publication number | Publication date |
---|---|
DE60001404T2 (de) | 2004-01-15 |
EP1180073A1 (fr) | 2002-02-20 |
BR0010415B1 (pt) | 2008-11-18 |
US6893181B1 (en) | 2005-05-17 |
FR2793426A1 (fr) | 2000-11-17 |
CN1351546A (zh) | 2002-05-29 |
AU4763500A (en) | 2000-12-05 |
CN1160204C (zh) | 2004-08-04 |
DE60001404D1 (de) | 2003-03-20 |
CA2370903C (fr) | 2008-03-25 |
FR2793426B1 (fr) | 2001-08-17 |
EP1180073B1 (fr) | 2003-02-12 |
MXPA01011540A (es) | 2002-06-04 |
JP4928669B2 (ja) | 2012-05-09 |
JP2002544025A (ja) | 2002-12-24 |
ES2192176T3 (es) | 2003-10-01 |
AU762571B2 (en) | 2003-06-26 |
CA2370903A1 (fr) | 2000-11-23 |
BR0010415A (pt) | 2002-02-13 |
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