EP0723880B1 - Procédé pour la fabrication de crayons cosmétiques et un crayon cosmétique ainsi obtenu - Google Patents

Procédé pour la fabrication de crayons cosmétiques et un crayon cosmétique ainsi obtenu Download PDF

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Publication number
EP0723880B1
EP0723880B1 EP19940830580 EP94830580A EP0723880B1 EP 0723880 B1 EP0723880 B1 EP 0723880B1 EP 19940830580 EP19940830580 EP 19940830580 EP 94830580 A EP94830580 A EP 94830580A EP 0723880 B1 EP0723880 B1 EP 0723880B1
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EP
European Patent Office
Prior art keywords
stiffening tube
parts
tube
cosmetic
weight
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.)
Revoked
Application number
EP19940830580
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German (de)
English (en)
Other versions
EP0723880A1 (fr
Inventor
Massimo Candela
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.)
Interfila SRL
Original Assignee
Interfila SRL
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8218595&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0723880(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Interfila SRL filed Critical Interfila SRL
Priority to EP19940830580 priority Critical patent/EP0723880B1/fr
Priority to DE1994610625 priority patent/DE69410625T2/de
Publication of EP0723880A1 publication Critical patent/EP0723880A1/fr
Application granted granted Critical
Publication of EP0723880B1 publication Critical patent/EP0723880B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • A45D40/16—Refill sticks; Moulding devices for producing sticks
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • A45D40/20—Pencil-like cosmetics; Simple holders for handling stick-shaped cosmetics or shaving soap while in use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K15/00—Assembling, finishing, or repairing pens
    • B43K15/02—Automatic machines
    • 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

Definitions

  • the present invention relates to a method of making cosmetic pencils, as well as a cosmetic pencil obtained by same, said method and said pencil being of the type comprising the features recited in the preamble of claims 1 and 11 respectively.
  • the invention is directed to the manufacture of pencils for cosmetic use of the so-called "poured-core" type.
  • a pair of wooden boards of rectangular section is made, and a plurality of longitudinal grooves of semicircular section parallelly spaced apart from each other according to a predetermined pitch is formed in one of the faces of said boards.
  • Engaged in the longitudinal grooves of one of said boards are, after interposition of a glue layer, corresponding pencil cores produced separately.
  • the second board previously coated with another glue layer on its surface exhibiting said grooves is then placed upon the core-holding board and pressed against it, so as to achieve a stable coupling, on drying of the glue.
  • the cosmetic mixture components forming the core are selected according to proportions capable of giving the mixture a consistency sufficient to make it possible to obtain a core by extrusion and to subsequently handle the core without running too many risks of deformation or breakage of the core itself.
  • the cosmetic mixtures for pencil cores obtained by extrusion contain, just as an indication, an amount included between 30 and 50 parts by weight (for 100 g of the product) of hydrogenated vegetable fats in the solid state at room temperature, 7 to 15 parts by weight of hydrogenated vegetable oils and/or mineral oils, 3 to 10 parts by weight of synthetic waxes, 30 to 55 parts by weight of pigments and inert fillers.
  • the consistency and structural resistance of the cosmetic mixture causes the assembling of the wooden body halves and the core interposed therebetween to be carried out to advantage in an automatic manner.
  • the pencil cores are arranged in a hopper feeder from which they are engaged by falling on a rotating transfer drum laying them down into the board grooves, a belt conveyor causing passage of the boards under said drum.
  • the pencil tip In fact, in order to enable the mixture to be conveniently transferred to the user's skin, the pencil tip needs to be passed over the same area several times, by exerting some pressure thereon. However, not only this necessity is not very pleasant from a practical point of view, but it also involves some risks as far as safety is concerned, above all with reference to pencils to be used as make-up on eyelids.
  • the cosmetic mixtures used to this end contain 30 to 50 parts by weight of hydrogenated oils and mineral oils; 5 to 15 parts by weight of hydrogenated vegetable fats; 15 to 25 parts by weight of synthetic waxes; 7 to 15 parts by weight of ball-shaped inert fillers; 15 to 25 parts by weight of pigments.
  • Pencil cores made up of this type of mixture however, due to the low consistency exhibited by the mixture itself, cannot be obtained following the traditional extrusion processes. In fact the pencil core production takes place by pouring the melted mixture into appropriate moulds from which the cores themselves are subsequently drawn out after cooling to the solidification temperature, being then enclosed in the half cases of wood forming the external body.
  • Pencils thus obtained commercially referred to as "poured-core pencils", offer much higher qualitative performance as compared to extruded-core pencils, in terms of easy marking on the skin, in that they make it possible to obtain sufficiently emphasized marks even when the pencil tip, is passed only once over the concerned area and the pressure exerted on said area is much lower than with usual extruded-core pencils.
  • the doc. DE-A-4305369 discloses a method for making cosmetic pencils according to which a plastic stiffening tube is filled with a cosmetic mixture introduced into the tube by injection.
  • the tube is thereafter enclosed between two half-portions defining an external body of the pencil and provided with grooves which define a seat enclosing the stiffening tube filled with the cosmetic mixture.
  • Closure elements are engaged into the tube ends respectively before and after the introduction of the cosmetic mixture.
  • the main object of the present invention is substantially to overcome the problems and limits of the known art, by providing a method enabling pencils to be made with a cosmetic mixture adapted for poured cores, capable of being assembled automatically in the same manner as it occurs with the present extruded-core pencils and completely free of the drawbacks resulting from permeation of the cosmetic mixture components through the wood fibres.
  • a pencil for cosmetic use is obtained, which is characterized in that it comprises the features of the characterizing portion of claim 12.
  • a pencil for cosmetic use made in accordance with the present invention has been generally identified by reference numeral 1.
  • Pencil 1 conventionally has an external body 2 of wood, consisting of two half cases 2a, 2b to be mutually coupled by gluing. Each of said half cases 2a, 2b exhibits a longitudinal groove 3a, 3b with a semicircular profile.
  • the longitudinal grooves define a housing at the inside of body 2 for receiving and enclosing a pencil core or stick generally denoted by 4.
  • the core 4 is made up of a cosmetic mixture of the type used in conventional cores obtained by pouring.
  • this mixture comprises 30 to 50 parts by weight of hydrogenated oils and mineral oils, 5 to 15 parts by weight of hydrogenated vegetable fats; 15 to 25 parts by weight of synthetic waxes; 7 to 15 parts by weight of ball-shaped inert fillers; 15 to 25 parts by weight of pigments.
  • the cosmetic mixture forming the core 4 is contained in a stiffening tube 5, interposed between the core itself and the inner surface of the longitudinal housing formed of the grooves 3a, 3b.
  • the stiffening tube 5 is fastened to the longitudinal housing by gluing.
  • the tube should have surface ribs 5a on the external surface thereof.
  • said tube may be also provided with auxiliary surface ribs 5b formed on the inner surface thereof.
  • closing element 15a, 15b may be also provided, which is slidably and sealingly engaged at least at one of the ends of the stiffening tube 5, to avoid evaporation of the volatile substances contained in the cosmetic mixture.
  • closing elements 15a, 15b can be made of a plastic material or of a jelly-like substance injected into the tube 5, as better clarified in the following.
  • the ends of the stiffening tube 5 may be hermetically sealed by squashing or heat-sealing.
  • the method of manufacturing the above described pencil 1 involves preparation of the cosmetic mixture by heat-blending of the different components, in a manner known per se, for example within a blending vessel or mixer 7. This blending is preferably carried out at a temperature included between 75°C and 110°C, for example 90°C, or at all events at a temperature higher than the solidification temperature of the mixture, so that the latter is maintained in a melted state with an appropriate viscosity.
  • the stiffening tubes 5 of plastic material are disposed at a predetermined distance on driving chains 8 or equivalent means imparting the tubes a stepping movement, according to a given path along which a series of work stations is located, as better described in the following.
  • each tube 5 first encounters a filling station 9 in which, by a gear pump 10 or equivalent means, a given amount of mixture is drawn from vessel 7 and injected into the tube itself.
  • the gear pump 10 is connected to a nozzle 10a movable between a work position in which, as shown by solid line, it is engaged with an inlet end of the tube 5 located close to the filling station 9 for carrying out injection of the melted mixture, to a rest position in which it is spaced apart from the tube 5, as shown by dotted line, to enable moving away of same and positioning of a new tube 5 at the filling station 9.
  • the tube 5 filled with the cosmetic mixture executes one or more movement steps in a cooling station 11, where the mixture temperature goes down to the solidification point, generally lower than 55°C. Cooling can be indifferently obtained, depending on requirements, by making the tube 5 stand at room temperature and/or by arranging appropriate forced ventilation means or cold-air blowing means in the cooling station.
  • a trimming station 12 may be conveniently provided downstream of the cooling station 11, in which by means of blades 12a or other cutting means, the opposite ends of tube 5 are cut so as to bring the tube itself to a predetermined length and eliminate its end portions that possibly have not been filled with the cosmetic mixture.
  • a heat-sealing station 13 may be also provided where closure of the opposite ends of tube 5 is carried out by squashing and simultaneous heat-sealing.
  • closing of tubes 5 is carried out by insertion of a first and a second closing element, 15a and 15b respectively, before and after injection of the mixture into the tube itself.
  • a first closing station 14 where insertion of the first closing element 15a is carried out close to the inlet end of the tube 5 located therein.
  • the closing element 15a may be made of plastic material, in which case the inserting operation can be executed for example by a pusher 14a provided with a reciprocating motion coaxially with the tube 3.
  • the closing element 15a may be formed of a jelly-like material introduced into the inlet end of tube 5 by injection.
  • the first closing element 15a will slide along the tube 5 under the thrust action of the injected mixture, until it reaches the tube end opposite to the injection nozzle 10a.
  • a second closing station 16 operating downstream of the cooling station 11 for example, and at all events downstream of the filling station 9, carries out the insertion of the second closing element 15b into the tube 5.
  • the second closing element 15b can be made of plastic material, being inserted by a pusher 16a, or may consist of a jelly-like substance, introduced by injection into the tube 5 end.
  • the pencil core 4 thus formed within the stiffening tube 5 lends itself to be handled easily without running the risk of being deformed or broken, even if the cosmetic mixture of which it is made up has a very low structural consistency.
  • One of said boards, previously coated with glue at least in the region of said grooves 3a, 3b is passed under a rotating drum by which, in a manner known per se, a given number of tubes 5 containing the respective cores 4 is taken up by a hopper feeder and distributed in the individual board grooves. During this step therefore, the insertion of each core 4 in the longitudinal housing 3a formed in one half portion 3a of the corresponding external wooden body substantially takes place.
  • the board carrying the cores 4 and tubes 5 is then matched with the other board, after optionally interposing another layer of glue; then, drying of the glue being completed, the matched boards are forced to pass through appropriate cutting elements causing the separation of the individual pencils and shaping of same to the desired form and sizes.
  • the present invention achieves the intended purposes.
  • the method in question enables cosmetic pencils to be manufactured in a completely automatic manner even when the pencil core is made up of a very malleable cosmetic mixture, devoid of any structural consistency.
  • stiffening tube of plastic material optionally provided with closure elements, ensures the qualitative features of the mixture to be maintained over time, while all risks of dispersion of the mixture components by evaporation or absorption by the wood forming the external body are eliminated.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cosmetics (AREA)

Claims (17)

  1. Procédé pour la fabrication de crayons cosmétiques, caractérisé en ce qu'il comporte les étapes de: - mélanger à chaud des huiles, des graisses, des cires et des pigments pour obtenir un mélange d'une substance cosmétique (4) à l'état fondu;
    introduire au moins un premier élément de fermeture (15a, 15b) dans une extrémité d'un tube de raidissement (5);
    injecter le mélange (4) fondu dans au moins un tube de raidissement (5);
    réaliser au moins deux moitiés (2a, 2b) en bois, chacune pourvue d'au moins une rainure longitudinale (3a, 3b);
    interposer le tube de raidissement (5) entre les rainures longitudinales (3a, 3b) desdites moitiés (2a, 2b);
    coupler les deux moitiés (2a, 2b) l'une à l'autre pour renfermer entre celles-ci de manière stable le tube de raidissement (5) interposé entre les rainures longitudinales (3a, 3b), caractérisé en ce que ledit au moins un élément de fermeture (15a, 15b) est formé par injection d'une matière gélatineuse dans le tube de raidissement (5).
  2. Procédé selon la revendication 1, caractérisé en ce que ledit premier élément de fermeture (15a) est introduit dans une extrémité d'entrée du tube de raidissement (5), ledit premier élément de fermeture (15a) étant engagé de manière coulissante et étanche dans le tube (5), pour être déplacé, pendant l'étape d'injection, à l'écart de ladite extrémité d'entrée, sous l'effet de la poussée du mélange (4) injecté.
  3. Procédé selon la revendication 2, caractérisé en ce que ladite étape d'injection est suivie d'une étape d'introduction dans le tube de raidissement (5) d'un deuxième élément de fermeture (15b) engagé de manière étanche dans le tube.
  4. Procédé selon la revendication 1, caractérisé en ce que le tube de raidissement (5), après ladite étape d'injection, est soumis à une étape de fermeture des extrémités opposées respectives par pressage et thermosoudage.
  5. Procédé selon la revendication 1, caractérisé en ce que l'étape d'injection du mélange fondu (4) dans le tube de raidissement (5) formant support est suivie d'une étape de refroidissement du mélange jusqu'à la température de solidification.
  6. Procédé selon la revendication 5, caractérisé en ce que ladite étape de refroidissement est effectuée en laissant séjourner le tube de raidissement (5) à température ambiante.
  7. Procédé selon la revendication 5, caractérisé en ce que ladite étape de refroidissement est effectuée par soufflage d'air froid sur le tube de raidissement (5).
  8. Procédé selon la revendication 1, caractérisé en ce que l'interposition du tube de raidissement (5) entre lesdites moitiés (2a, 2b) a lieu par collage du tube dans la rainure longitudinale (3a, 3b) de l'une des moitiés avant leur couplage.
  9. Procédé selon la revendication 1, caractérisé en de qu'après l'étape d'injection on effectue en outre une étape de rognage des extrémités du tube de raidissement (5).
  10. Procédé selon la revendication 1, caractérisé en ce que ladite étape de mélange est exécutée sur les composants suivants:
    30 à 50 p.p. (parties en poids sur 100 parties de produit) d'huiles hydrogénées et huiles minérales;
    5 à 15 p.p. de graisses végétales hydrogénées;
    15 à 25 p.p. de cires synthétiques;
    7 à 15 p.p. de charges inertes ayant la forme de sphères;
    15 à 25 p.p. de pigments.
  11. Procédé selon la revendication 1, caractérisé en ce que l'étape de mélange est effectuée à une température comprise entre 75°C et 110°C.
  12. Crayon cosmétique comprenant:
    un corps extérieur en bois formé d'au moins deux moitiés (2a, 2b) couplées l'une à l'autre;
    une mine (4) renfermée dans un logement longitudinal (3a, 3b) défini entre lesdites moitiés (2a, 2b) couplées, ladite mine étant formée d'un mélange cosmétique composé d'huiles hydrogénées et d'huiles minérales en une quantité comprise entre 30 et 50 p.p. (parties en poids sur 100 parties de produit), de graisses végétales hydrogénées en une quantité comprise entre 5 et 15 p.p., de cires synthétiques en une quantité comprise entre 15 et 25 p.p., de charges inertes en forme de sphères en une quantité comprise entre 7 et 15 p.p., de pigments en une quantité comprise entre 15 et 25 p.p.;
    un tube de raidissement (5) de matière plastique interposé entre la mine (4) et les surfaces internes du logement longitudinal (3a, 3b) présenté par le corps extérieur en bois (2);
    au moins un élément de fermeture (15a, 15b) engagé dans au moins une extrémité du tube de raidissement (5),
    caractérisé en ce que ledit élément de fermeture (15a, 15b) est fabriqué en une matière gélatineuse introduite dans le tube de raidissement (5) par injection.
  13. Crayon cosmétique selon la revendication 12, caractérisé en ce que ledit tube de raidissement (5) présente au moins un élément de fermeture (15a, 15b) engagé de manière étanche dans au moins l'une de ses extrémités.
  14. Crayon cosmétique selon la revendication 13, caractérisé en ce que ledit élément de fermeture (15a, 15b) est fabriqué en matière plastique.
  15. Crayon cosmétique selon la revendication 12, caractérisé en ce que le tube de raidissement (5) présente ses extrémités respectives fermées par thermosoudage.
  16. Crayon cosmétique selon la revendication 12, caractérisé en ce que ledit tube de raidissement (5) présente des rayures superficielles (5a) sur sa surface extérieure.
  17. Crayon cosmétique selon la revendication 12, caractérisé en ce que ledit tube de raidissement (5) présente une rayure superficielle (5b) sur sa surface intérieure.
EP19940830580 1994-12-21 1994-12-21 Procédé pour la fabrication de crayons cosmétiques et un crayon cosmétique ainsi obtenu Revoked EP0723880B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19940830580 EP0723880B1 (fr) 1994-12-21 1994-12-21 Procédé pour la fabrication de crayons cosmétiques et un crayon cosmétique ainsi obtenu
DE1994610625 DE69410625T2 (de) 1994-12-21 1994-12-21 Verfahren zur Herstellung von Kosmetikstiften und damit hergestellter Kosmetikstift

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19940830580 EP0723880B1 (fr) 1994-12-21 1994-12-21 Procédé pour la fabrication de crayons cosmétiques et un crayon cosmétique ainsi obtenu

Publications (2)

Publication Number Publication Date
EP0723880A1 EP0723880A1 (fr) 1996-07-31
EP0723880B1 true EP0723880B1 (fr) 1998-05-27

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ID=8218595

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940830580 Revoked EP0723880B1 (fr) 1994-12-21 1994-12-21 Procédé pour la fabrication de crayons cosmétiques et un crayon cosmétique ainsi obtenu

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EP (1) EP0723880B1 (fr)
DE (1) DE69410625T2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1810520B (zh) * 2005-01-26 2011-04-06 J.S.斯达德勒两合公司 用于书写工具、绘图工具或绘画工具的笔芯

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1301771B1 (it) 1998-06-22 2000-07-07 Laffon Spa Procedimento di riempimento meccanico di un contenitore per prodotticosmetici.
ITMI20042331A1 (it) * 2004-12-03 2005-03-03 Intercos Italiana Apparato e processo per la realizzazione di prodotti cosmetici colati multicolori con varie forme
IT1403267B1 (it) * 2010-12-17 2013-10-17 Chromavis Spa Dispositivo di sformatura di mine di matite truccanti
CN106956536B (zh) * 2014-02-26 2018-11-13 江苏宁江文化科技有限公司 应用于新型铅笔的粉末层、新型铅笔及其使用方法

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DE1561766A1 (de) * 1967-02-22 1970-04-02 Bleistiftmaschinenfabrik Fr Eh Trenn- und UEberfuehrungsvorrichtung,insbesondere fuer Bleistiftminen
FR2490470A1 (fr) * 1980-09-22 1982-03-26 Oreal Crayon a gaine en matiere plastique, en particulier crayon de maquillage, et son procede de fabrication
DE3327771C2 (de) * 1983-08-02 1986-06-05 Schwan-Stabilo Schwanhäußer GmbH & Co, 8500 Nürnberg Verfahren und Vorrichtung zur Herstellung eines Kosmetikstifts
DE9215799U1 (de) * 1992-11-20 1993-02-25 Schwan-Stabilo Schwanhäußer GmbH & Co, 8500 Nürnberg Stift, insbesondere Kosmetikstift
DE4303563C2 (de) * 1993-02-08 1996-07-11 Hempel Matthias Verfahren und Vorrichtung zur Herstellung einer Mine, insbesondere Mal-, Schreib-, Markier- und Kosmetikstifte
DE4305369C2 (de) * 1993-02-22 1995-10-26 Schwan Stabilo Schwanhaeusser Verfahren zur Herstellung von Stiften, insbes. von Kosmetikstiften
DE9311358U1 (de) * 1993-07-30 1993-09-23 Schwan-Stabilo Schwanhäußer GmbH & Co, 90409 Nürnberg Farbmine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1810520B (zh) * 2005-01-26 2011-04-06 J.S.斯达德勒两合公司 用于书写工具、绘图工具或绘画工具的笔芯

Also Published As

Publication number Publication date
DE69410625T2 (de) 1998-09-24
EP0723880A1 (fr) 1996-07-31
DE69410625D1 (de) 1998-07-02

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