EP0723880B1 - Verfahren zur Herstellung von Kosmetikstiften und damit hergestellter Kosmetikstift - Google Patents

Verfahren zur Herstellung von Kosmetikstiften und damit hergestellter Kosmetikstift 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
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Revoked
Application number
EP19940830580
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English (en)
French (fr)
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EP0723880A1 (de
Inventor
Massimo Candela
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Interfila SRL
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Interfila SRL
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Application filed by Interfila SRL filed Critical Interfila SRL
Priority to DE1994610625 priority Critical patent/DE69410625T2/de
Priority to EP19940830580 priority patent/EP0723880B1/de
Publication of EP0723880A1 publication Critical patent/EP0723880A1/de
Application granted granted Critical
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    • 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.

Claims (17)

  1. Verfahren zur Herstellung von Kosmetikstiften und damit hergestellter Kosmetikstift, dadurch gekennzeichnet, daß es folgende Arbeitsschritte umfaßt:
    Mischen unter Wärme von Ölen, Fetten, Wachsen und Pigmenten zur Erhaltung einer Masse eines kosmetischen Stoffes (4) im geschmolzenen Zustand;
    Einfügung mindestens eines ersten Verschlußelementes (15a, 15b) in ein Ende eines Versteifungsröhrchens (5);
    Einspritzung der geschmolzenen Masse (4) in mindestens ein Versteifungsröhrchen (5);
    Herstellung von mindestens zwei Teilehälften (2a, 2b) aus Holz, die jeweils mit mindestens einer Längsnut (3a, 3b) versehen sind;
    Zwischenschaltung des Versteifungsröhrchens (5) zwischen den Längsnuten (3a, 3b) dieser Teilehälften (2a, 2b);
    gegenseitige Verbindung dieser Teilehälften (2, 2b), um zwischen denselben das zwischen den Längsnuten (3a, 3b) liegende Versteifungsröhrchen (5) stabil einzuschließen, dadurch gekennzeichnet, daß dieses mindestens eine Verschlußelement (15a, 15b) durch Einspritzung eines gallertartigen Materials in das Versteifungsröhrchen (5) gebildet ist.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das erste Verschlußelement (15a) an einem Eintrittsende des Versteifungsröhrchens (5) eingebracht wird, wobei dieses erste Verschlußelement (15a) gleitbar abgedichtet im Röhrchen (5) eingreift, um während des Einspritzschrittes von dem Eintrittsende durch die Schubwirkung der eingespritzten Masse (4) wegbewegt zu werden.
  3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß dem Einspritzschritt ein Einführungsschritt in das Versteifungsröhrchen (5) eines zweiten, im Röhrchen selbst dicht eingreifenden zweiten Verschlußelementes (15b) folgt.
  4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß nach dem Einspritzschritt das Versteifungsröhrchen (5) einem Schließschritt der jeweiligen abgewandten Enden durch Verquetschung und Thermoschweißung unterliegt.
  5. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß dem Einspritzschritt der geschmolzenen Masse (4) ins Versteifungsröhrchen (5) ein Abkühlschritt der Masse bis zur Verfestigungstemperatur folgt.
  6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß der Abkühlschritt durch Verweilen des Versteifungsröhrchens (5) auf Raumtemperatur durchgeführt wird.
  7. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß der Abkühlschritt durch Blasen von Luft auf das Versteifungsröhrchen (5) durchgeführt wird.
  8. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Zwischenschaltung des Versteifungsröhrchens (5) zwischen den Teilehälften (2a, 2b) durch Verleimung des Röhrchens selbst in der Längsnut (3a, 3b) einer der Teilehälften selbst vor deren gegenseitigen Verbindung erfolgt.
  9. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß nach dem Einspritzschritt überdies ein Abschneidschritt der Enden des Versteifungsröhrchens (5) durchgeführt wird.
  10. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Mischvorgang mit folgenden Bestandteilen erfolgt:
    von 30 bis 50 pp (Gewichtsanteile für 100 Teile des Produktes) von hydrierten Ölen und Mineralölen;
    von 5 bis 15 pp von hydrierten Pflanzenfetten;
    von 15 bis 25 pp von synthetischen Wachsen;
    von 7 bis 15 pp von inerten, kugelförmigen Chargen;
    von 15 bis 25 pp von Pigmenten.
  11. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Mischvorgang bei einer Temperatur zwischen 75° C und 110° C erfolgt.
  12. Kosmetikstift umfassend:
    einen Außenkörper (2) aus Holz, zusammengesetzt aus mindestens zwei miteinander verbundenen Teilehälften (2a, 2b);
    eine in einer zwischen den miteinander verbundenen Teilehälften (2a, 2b) festgelegten Längsaufnahme eingeschlossene Mine (4), die aus einer kosmetischen Masse besteht, die aus hydrierten Ölen und Mineralölen in Mengen zwischen 30 und 50 pp (Gewichtsanteile pro 100 Produkteteile), hydrierten Pflanzenfetten in einer Menge zwischen 5 und 15 pp, synthetischen Wachsen in einer Menge zwischen 15 und 25 pp, inerten, kugelförmigen Chargen in einer Menge zwischen 7 und 15 pp, Pigmenten in einer Menge zwischen 15 und 25 pp zusammengesetzt ist,
    ein Versteifungsröhrchen (5) aus Kunststoff, das zwischen der Mine (4) und den Innenflächen der Längsaufnahme (3a, 3b) zwischengeschalten ist, die der Außenkörper aus Holz (2) aufweist;
    mindestens ein Verschlußelement (15a, 15b), das in mindestens einem Ende des Versteifungsröhrchens (5) in Eingriff steht;
    dadurch gekennzeichnet, daß das Verschlußelement (15a, 15b) aus einem gallertartigen Material besteht, das in das Versteifungsröhrchen (5) durch Einspritzung eingebracht ist.
  13. Kosmetikstift nach Anspruch 12, dadurch gekennzeichnet, daß das Versteifungsröhrchen (5) mindestens ein Verschlußelement (15a, 15b) aufweist, das luftdicht in mindestens einem seiner Enden eingreift.
  14. Kosmetikstift nach Anspruch 13, dadurch gekennzeichnet, daß das Verschlußelement (15a, 15b) aus Kunststoff besteht.
  15. Kosmetikstift nach Anspruch 12, dadurch gekennzeichnet, daß das Versteifungsröhrchen (5) jeweilige Enden aufweist, die durch Thermoschweißung geschlossen sind.
  16. Kosmetikstift nach Anspruch 12, dadurch gekennzeichnet, daß das Versteifungsröhrchen (5) auf einer seiner Außenflächen Oberflächenrillen (15a) aufweist.
  17. Kosmetikstift nach Anspruch 12, dadurch gekennzeichnet, daß das Versteifungsröhrchen (5) auf einer seiner Innenflächen eine Oberflächenrille (5b) aufweist.
EP19940830580 1994-12-21 1994-12-21 Verfahren zur Herstellung von Kosmetikstiften und damit hergestellter Kosmetikstift Revoked EP0723880B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE1994610625 DE69410625T2 (de) 1994-12-21 1994-12-21 Verfahren zur Herstellung von Kosmetikstiften und damit hergestellter Kosmetikstift
EP19940830580 EP0723880B1 (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 (de) 1994-12-21 1994-12-21 Verfahren zur Herstellung von Kosmetikstiften und damit hergestellter Kosmetikstift

Publications (2)

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EP0723880A1 EP0723880A1 (de) 1996-07-31
EP0723880B1 true EP0723880B1 (de) 1998-05-27

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EP19940830580 Revoked EP0723880B1 (de) 1994-12-21 1994-12-21 Verfahren zur Herstellung von Kosmetikstiften und damit hergestellter Kosmetikstift

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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
CN103818152B (zh) * 2014-02-26 2017-05-17 杨璨然 一种新型铅笔的使用方法

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Publication number Priority date Publication date Assignee Title
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 Schwanhaeusser Gmbh & Co, 8500 Nuernberg, De
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 Schwanhaeusser 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

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DE69410625T2 (de) 1998-09-24
EP0723880A1 (de) 1996-07-31
DE69410625D1 (de) 1998-07-02

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