WO1999064253A1 - Chalk stick provided with protective sleeve and shrinkable protective sleeve - Google Patents

Chalk stick provided with protective sleeve and shrinkable protective sleeve Download PDF

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Publication number
WO1999064253A1
WO1999064253A1 PCT/IB1999/001059 IB9901059W WO9964253A1 WO 1999064253 A1 WO1999064253 A1 WO 1999064253A1 IB 9901059 W IB9901059 W IB 9901059W WO 9964253 A1 WO9964253 A1 WO 9964253A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
weakening lines
longitudinal
protective sleeve
chalk
Prior art date
Application number
PCT/IB1999/001059
Other languages
French (fr)
Inventor
Jean-Bernard Chenal
Original Assignee
Caran D'ache S.A.
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 by Caran D'ache S.A. filed Critical Caran D'ache S.A.
Priority to EP99922432A priority Critical patent/EP1084042A1/en
Priority to JP2000553291A priority patent/JP2002517342A/en
Publication of WO1999064253A1 publication Critical patent/WO1999064253A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K23/00—Holders or connectors for writing implements; Means for protecting the writing-points
    • B43K23/016—Holders for crayons or chalks
    • 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
    • B43K19/14—Sheathings

Definitions

  • White or colored chalks are generally provided with an envelope around their periphery to avoid getting their fingers dirty during their use, as well as to provide a support intended to receive information such as company name, pictogram, barcode , color number, etc.
  • envelopes made of paper are known. It is a strip of paper wrapped around the chalk and glued.
  • Such envelopes are described in the CH patent (patent application CH 1794/96 of the holder, entitled “label”).
  • This label intended to be affixed to a drawing instrument, in particular chalks consists of a rectangular sheet of paper having cutouts forming festoons on one of the long sides.
  • the label is dimensioned in such a way that in the service position on the chalk, it has a covering zone comprising a double thickness of paper on at least part of the circumference of the chalk. Openings are provided and arranged in such a way that they are in the immediate vicinity of the label covering edge, in the service position, to facilitate the initiation of tearing off a label strip along the pre- cuts.
  • a label or envelope is easy to use for the user but has the disadvantage of being relatively expensive and especially that of a delicate installation requiring a winding of the paper around the chalk, then its sticking.
  • the present invention relates to a chalk provided with a protective sleeve and a protective sleeve for chalk which obviates the aforementioned drawbacks and which allows easy use of the chalk, that is to say section by section removal of the sleeve, an easy installation. and economical, and thereby mass production of protective sleeves to reduce the cost.
  • Figure 1 shows in perspective a chalk provided with a protective sleeve.
  • Figure 2 illustrates in perspective a protective sleeve intended to be affixed by heat shrinking around a chalk.
  • FIG. 3 illustrates on a larger scale a detail of the protective sleeve illustrated in FIG. 2.
  • FIG. 4 illustrates on a larger scale a detail of a variant of the protective sleeve.
  • FIG. 5 illustrates a second embodiment of the protective sleeve in cross section before being placed on the chalk.
  • Figure 6 illustrates the protective sleeve of Figure 5 split longitudinally and laid flat.
  • FIG. 7 illustrates a chalk provided with the protective sleeve illustrated in FIGS. 5 and 6.
  • the chalk illustrated in FIG. 1 has a conical tip 1 and a cylindrical body 2, this body 2 being entirely or partially covered with a protective sleeve 3 made of heat-shrinkable plastic.
  • FIG. 2 illustrates the heat-shrinkable sleeve 3 before it is affixed to the chalk.
  • This sleeve 3 is produced from a sheet of heat-shrinkable material rolled up to form a cylinder. The edges of the overlapping sheet are welded together, thus forming a longitudinal weld 4.
  • the sheet constituting the sleeve 3 is, before welding, provided with weakening lines, for example perforation lines. These pre-perforations are arranged so that once the sleeve 3 has been formed, a first network of weakening lines is formed by transverse cutting lines 5 closed on themselves, here circular, defining several sections of the sleeve. protection.
  • a second network of weakening lines consists of two longitudinal weakening lines 6 generally and preferably arranged on either side of the weld 4.
  • Each circular cutting line 5 of the first network of weakening lines has a slot or opening 7 generally located in line with the weld 4 and slightly longer than the width defined by the two longitudinal weakening lines 6.
  • the sleeves are stored in rolls, still attached to each other and it is only when placing them on a chalk that they are separated, possibly provided with an inscription or a decoration and a barcode, then strung on the chalk and heat-shrunk on it.
  • the lines of weakness 5, 6 may be formed by any other means allowing easy tearing along these lines and not by a dotted perforation thereof.
  • the longitudinal weakening lines 6 can be placed anywhere on the circumference of the protective sleeve 3 and not necessarily on either side of the longitudinal weld thereof.
  • the protective sleeve 3 comprises a tear strip 8 welded or bonded to the internal surface of the sleeve between the longitudinal weakening lines 6.
  • This tear strip 8 is obviously cut by the openings 7.
  • the openings 7 combined or not with the tear strip 8 constitute gripping means and tear-off allowing easy removal, section after section, of the protective sleeve.
  • Figures 5 and 6 illustrate a second embodiment of the protective sleeve for chalk according to the invention.
  • the protective sleeve 3 is produced from a plastic sheet 10 folded back on itself to form a tube. Near a first fold, the plastic strip is glued or welded to itself at 11 so that a flag 12 of a few millimeters remains free inside the tube thus formed.
  • a tear strip 14 is glued or welded inside the tube. The tear tape 14 is affixed before bonding.
  • a first network of weakening lines is formed by pre-cutouts in longitudinal dotted lines 15, 15a arranged on either side of the tear strip 14.
  • a second network of lines weakening is constituted by transverse dotted precuts 16, closed on themselves, pre-cutting the tube into several successive sections. These pre-cuts 16 have a recess at the tear strip 14 thus constituting a gripping flap or tab 17 facilitating the tearing of a section of the protective sleeve.
  • These pre-perforations 16 also pass through the tear strip 14.
  • the gripping and tear off means consist of the tongues 17 and the tear strip 14.
  • the networks of lines of weakness can be achieved by weakening the wall of the sleeve or any other suitable means rather than dotted pre-perforations.
  • the retractable sleeve covers part of the back surface of the chalk. By heat-shrinking, we get a return of the wall of the sleeve, slightly longer than the chalk. This protection of the rear face of the chalk is important in order to avoid soiling and soiling of the machines, in particular packaging of the chalks, and thus avoid significant downtime due to the cleaning of these machines.

Landscapes

  • Packages (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Wrappers (AREA)

Abstract

The invention concerns a protective sleeve for sheathing a chalk stick formed by longitudinally welding a shrinkable material sheet to form a cylinder with diameter slightly larger than the external diameter of chalk body to be sheathed. Said protective sleeve comprises two longitudinal yield lines (6) extending over its whole length and self-enclosed transverse yield lines (5) defining several sections along the sleeve length. The transverse yield lines (5) comprise a through opening (7) having a length not less than the width of the zone included between the two longitudinal yield lines (6).

Description

CRAIE MUNIE D'UN MANCHON PROTECTEUR ET MANCHON PROTECTEUR THERMORETRACTABLE CHALK PROVIDED WITH A PROTECTIVE SLEEVE AND HEAT-SHRINKABLE PROTECTIVE SLEEVE
Les craies blanches ou de couleurs sont généralement munies d'une enveloppe sur leur pourtour pour éviter de se salir les doigts lors de leur utilisation, ainsi que pour fournir un support destiné à recevoir des informations telles que nom de la société, pictogramme, code barre, numéro de couleur, etc. On connaît de telles enveloppes réalisées en papier. Il s'agit d'une bande de papier enroulée autour de la craie et collée. De telles enveloppes sont décrites dans le brevet CH (demande de brevet CH 1794/96 de la titulaire, intitulée « étiquette »). Cette étiquette destinée à être apposée sur un instrument pour dessin, en particulier des craies, est constituée d'une feuille de papier rectangulaire présentant des découpes formant des festons sur l'un des grands côtés. L'étiquette est dimensionnée de telle façon qu'en position de service sur la craie, elle présente une zone de recouvrement comportant une double épaisseur de papier sur au moins une partie de la circonférence de la craie. Des ouvertures sont prévues et agencées de telle façon qu'elles soient à proximité immédiate du bord de recouvrement de l'étiquette, en position de service, pour faciliter l'amorce d'arrachage d'une bande d'étiquette le long de pré-découpes. Une telle étiquette ou enveloppe est facile d'usage pour l'utilisateur mais présente l'inconvénient d'être relativement onéreuse et surtout celui d'une mise en place délicate nécessitant un enroulage du papier autour de la craie, puis son collage.White or colored chalks are generally provided with an envelope around their periphery to avoid getting their fingers dirty during their use, as well as to provide a support intended to receive information such as company name, pictogram, barcode , color number, etc. Such envelopes made of paper are known. It is a strip of paper wrapped around the chalk and glued. Such envelopes are described in the CH patent (patent application CH 1794/96 of the holder, entitled "label"). This label intended to be affixed to a drawing instrument, in particular chalks, consists of a rectangular sheet of paper having cutouts forming festoons on one of the long sides. The label is dimensioned in such a way that in the service position on the chalk, it has a covering zone comprising a double thickness of paper on at least part of the circumference of the chalk. Openings are provided and arranged in such a way that they are in the immediate vicinity of the label covering edge, in the service position, to facilitate the initiation of tearing off a label strip along the pre- cuts. Such a label or envelope is easy to use for the user but has the disadvantage of being relatively expensive and especially that of a delicate installation requiring a winding of the paper around the chalk, then its sticking.
On connaît également des craies recouvertes d'un manchon en matière plastique thermorétractable. Ici, la mise en place sur la craie d'un tel manchon est facile, mais l'usager a la plus grande peine à enlever cette enveloppe au fur et à mesure de l'utilisation de la craie. En effet, la matière plastique est solide, fortement appliquée contre la craie et il est nécessaire de disposer d'un couteau ou autre outil coupant pour sectionner cette enveloppe suivant une circonférence et longitudinalement pour pouvoir enlever un tronçon du manchon.Also known are chalks covered with a sleeve of heat-shrinkable plastic. Here, the installation on the chalk of such a sleeve is easy, but the user has the greatest difficulty in removing this envelope as and when using the chalk. Indeed, the plastic is solid, strongly applied against the chalk and it is necessary to have a knife or other cutting tool to cut this envelope along a circumference and longitudinally to be able to remove a section of the sleeve.
La présente invention a pour objet une craie munie d'un manchon protecteur et un manchon protecteur pour craie qui obvient aux inconvénients précités et qui permettent une utilisation facile de la craie, soit l'enlèvement tronçon par tronçon du manchon, une mise en place facile et économique, et par là une fabrication en grande série des manchons protecteurs pour en réduire le coût. D'autres avantages ressortent de la description qui suit. Le dessin annexé illustre schématiquement et à titre d'exemple deux formes d'exécution d'une craie munie d'un manchon de protection et deux formes d'exécution du manchon de protection selon l'invention. La figure 1 représente en perspective une craie munie d'un manchon protecteur.The present invention relates to a chalk provided with a protective sleeve and a protective sleeve for chalk which obviates the aforementioned drawbacks and which allows easy use of the chalk, that is to say section by section removal of the sleeve, an easy installation. and economical, and thereby mass production of protective sleeves to reduce the cost. Other advantages will emerge from the description which follows. The accompanying drawing illustrates schematically and by way of example two embodiments of a chalk provided with a protective sleeve and two embodiments of the protective sleeve according to the invention. Figure 1 shows in perspective a chalk provided with a protective sleeve.
La figure 2 illustre en perspective un manchon de protection destiné à être apposé par thermorétraction autour d'une craie.Figure 2 illustrates in perspective a protective sleeve intended to be affixed by heat shrinking around a chalk.
La figure 3 illustre à plus grande échelle un détail du manchon protecteur illustré à la figure 2.FIG. 3 illustrates on a larger scale a detail of the protective sleeve illustrated in FIG. 2.
La figure 4 illustre à plus grande échelle un détail d'une variante du manchon protecteur. La figure 5 illustre une seconde forme d'exécution du manchon de protection en coupe transversale avant mise en place sur la craie.Figure 4 illustrates on a larger scale a detail of a variant of the protective sleeve. FIG. 5 illustrates a second embodiment of the protective sleeve in cross section before being placed on the chalk.
La figure 6 illustre le manchon de protection de la figure 5 fendu longitudinalement et mis à plat.Figure 6 illustrates the protective sleeve of Figure 5 split longitudinally and laid flat.
La figure 7 illustre une craie munie du manchon de protection illustré aux figures 5 et 6. La craie illustrée à la figure 1 comporte une pointe conique 1 et un corps cylindrique 2, ce corps 2 étant entièrement ou partiellement recouvert d'un manchon de protection 3 en matière plastique thermorétractable.FIG. 7 illustrates a chalk provided with the protective sleeve illustrated in FIGS. 5 and 6. The chalk illustrated in FIG. 1 has a conical tip 1 and a cylindrical body 2, this body 2 being entirely or partially covered with a protective sleeve 3 made of heat-shrinkable plastic.
La figure 2 illustre le manchon thermorétractable 3 avant son apposition sur la craie. Ce manchon 3 est réalisé à partir d'une feuille de matière thermorétractable enroulée pour former un cylindre. Les bords de la feuille superposés sont soudés ensemble formant ainsi une soudure longitudinale 4.Figure 2 illustrates the heat-shrinkable sleeve 3 before it is affixed to the chalk. This sleeve 3 is produced from a sheet of heat-shrinkable material rolled up to form a cylinder. The edges of the overlapping sheet are welded together, thus forming a longitudinal weld 4.
La feuille constituant le manchon 3 est, avant soudure, pourvue de lignes d'affaiblissement, par exemple de lignes de perforation. Ces pré-perforations sont disposées de telle sorte qu'une fois le manchon 3 constitué, un premier réseau de lignes d'affaiblissement soit formé par des lignes de découpage 5 transversales fermées sur elles-mêmes, ici circulaires, définissant plusieurs tronçons du manchon de protection. Un second réseau de lignes d'affaiblissement est constitué par deux lignes d'affaiblissement longitudinales 6 disposées généralement et de préférence de part et d'autre de la soudure 4.The sheet constituting the sleeve 3 is, before welding, provided with weakening lines, for example perforation lines. These pre-perforations are arranged so that once the sleeve 3 has been formed, a first network of weakening lines is formed by transverse cutting lines 5 closed on themselves, here circular, defining several sections of the sleeve. protection. A second network of weakening lines consists of two longitudinal weakening lines 6 generally and preferably arranged on either side of the weld 4.
Chaque ligne de découpage circulaire 5 du premier réseau de lignes d'affaiblissement présente une fente ou ouverture 7 généralement située au droit de la soudure 4 et légèrement plus longue que la largeur définie par les deux lignes d'affaiblissement longitudinales 6. Ainsi, une fois le manchon de protection 3 mis en place sur le corps 2 de la craie par thermorétraction, l'usager peut facilement en enlever les tronçons les uns après les autres. En passant l'ongle dans l'ouverture 7, on déchire le manchon suivant les lignes d'affaiblissement longitudinales 6 jusqu'à la ligne de découpage circulaire 5 suivante, puis on enlève un tronçon de manchon en déchirant celui-ci suivant cette ligne de découpe 5 circulaire. Le manchon de protection 3 en matière plastique thermorétractable est de préférence transparent, ainsi un seul et même type de manchon peut être utilisé quelle que soit la couleur de la craie, la couleur étant vue en transparence.Each circular cutting line 5 of the first network of weakening lines has a slot or opening 7 generally located in line with the weld 4 and slightly longer than the width defined by the two longitudinal weakening lines 6. Thus, once the protective sleeve 3 placed on the body 2 of the chalk by heat-shrinking, the user can easily remove the sections one after the other. By passing the nail through the opening 7, the sleeve is torn along the longitudinal weakening lines 6 to the next circular cutting line 5, then a section of sleeve is removed by tearing the latter along this line of circular cutout 5. The protective sleeve 3 made of heat-shrinkable plastic is preferably transparent, thus one and the same type of sleeve can be used regardless of the color of the chalk, the color being seen in transparency.
Généralement, les manchons sont stockés en rouleaux, encore attachés les uns aux autres et ce n'est qu'au moment de les poser sur une craie qu'ils sont séparés, éventuellement munis d'une inscription ou d'un décor et d'un code barre, puis enfilés sur la craie et thermorétractés sur celle-ci.Generally, the sleeves are stored in rolls, still attached to each other and it is only when placing them on a chalk that they are separated, possibly provided with an inscription or a decoration and a barcode, then strung on the chalk and heat-shrunk on it.
On peut ainsi pré-fabriquer des manchons de protection en grande série à faible coût et les personnaliser en fonction de la craie qu'ils entourent uniquement lors de leur mise en place sur la craie. Ceci réduit le coût de fabrication, d'assemblage et de stockage.We can thus pre-manufacture protective sleeves in large series at low cost and customize them according to the chalk they surround only when they are placed on the chalk. This reduces the cost of manufacturing, assembly and storage.
Dans des variantes, les lignes d'affaiblissement 5,6 peuvent être constituées par tout autre moyen permettant un déchirement facile le long de ces lignes et non pas par une perforation pointillée de celui-ci. Dans des variantes les lignes d'affaiblissement 6 longitudinales peuvent être disposées n'importe où sur la circonférence du manchon de protection 3 et non pas forcément de part et d'autre de la soudure longitudinale de celui-ci.In variants, the lines of weakness 5, 6 may be formed by any other means allowing easy tearing along these lines and not by a dotted perforation thereof. In variants, the longitudinal weakening lines 6 can be placed anywhere on the circumference of the protective sleeve 3 and not necessarily on either side of the longitudinal weld thereof.
Dans la variante illustrée à la figure 4, le manchon de protection 3 comporte une bande d'arrachage 8 soudée ou collée sur la surface interne du manchon entre les lignes d'affaiblissement longitudinales 6. Cette bande d'arrachage 8 est évidemment coupée par les ouvertures 7. Ainsi, lorsque l'on tire sur cette partie du manchon pour la déchirer sur une certaine distance longitudinale entre deux lignes de découpes 5 on assure une déchirure franche entre les lignes d'affaiblissement 6. Dans cette forme d'exécution et ces variantes, les ouvertures 7 combinées ou non avec la bande d'arrachage 8 constituent des moyens de préhension et d'arrachage permettant l'enlèvement aisé, tronçon après tronçon, du manchon de protection.In the variant illustrated in FIG. 4, the protective sleeve 3 comprises a tear strip 8 welded or bonded to the internal surface of the sleeve between the longitudinal weakening lines 6. This tear strip 8 is obviously cut by the openings 7. Thus, when one pulls on this part of the sleeve to tear it over a certain longitudinal distance between two lines of cuts 5, a frank tear is provided between the weakening lines 6. In this embodiment and these variants, the openings 7 combined or not with the tear strip 8 constitute gripping means and tear-off allowing easy removal, section after section, of the protective sleeve.
Les figures 5 et 6 illustrent une seconde forme d'exécution du manchon de protection pour craie selon l'invention. Ici également, le manchon de protection 3 est réalisé à partir d'une feuille de matière plastique 10 repliée sur elle-même pour former un tube. A proximité d'un premier pli, la bande de matière plastique est collée ou soudée sur elle- même en 11 de telle sorte qu'un drapeau 12 de quelques millimètres reste libre à l'intérieur du tube ainsi formé. Dans le second pli 13, une bande d'arrachage 14 est collée ou soudée à l'intérieur du tube. L'apposition de la bande d'arrachage 14 se fait avant collage.Figures 5 and 6 illustrate a second embodiment of the protective sleeve for chalk according to the invention. Here too, the protective sleeve 3 is produced from a plastic sheet 10 folded back on itself to form a tube. Near a first fold, the plastic strip is glued or welded to itself at 11 so that a flag 12 of a few millimeters remains free inside the tube thus formed. In the second fold 13, a tear strip 14 is glued or welded inside the tube. The tear tape 14 is affixed before bonding.
Comme on le voit sur la figure 6, un premier réseau de lignes d'affaiblissement est formé par des pré-découpes en pointillés longitudinales 15,15a disposées de part et d'autre de la bande d'arrachage 14. Un second réseau de lignes d'affaiblissement est constitué par des prédécoupes en pointillés 16 transversales, fermées sur elles-mêmes, pré-découpant le tube en plusieurs tronçons successifs. Ces pré-découpes 16 présentent un décrochement au niveau de la bande d'arrachage 14 constituant ainsi un volet ou languette de préhension 17 facilitant l'arrachage d'un tronçon du manchon de protection. Ces pré-perforations 16 traversent également la bande d'arrachage 14. Dans cette forme d'exécution, les moyens de préhension et d'arrachage sont constitués par les languettes 17 et la bande d'arrachage 14.As can be seen in FIG. 6, a first network of weakening lines is formed by pre-cutouts in longitudinal dotted lines 15, 15a arranged on either side of the tear strip 14. A second network of lines weakening is constituted by transverse dotted precuts 16, closed on themselves, pre-cutting the tube into several successive sections. These pre-cuts 16 have a recess at the tear strip 14 thus constituting a gripping flap or tab 17 facilitating the tearing of a section of the protective sleeve. These pre-perforations 16 also pass through the tear strip 14. In this embodiment, the gripping and tear off means consist of the tongues 17 and the tear strip 14.
Dans cette forme d'exécution également, les réseaux de lignes d'affaiblissement peuvent être réalisés par un affaiblissement de la paroi du manchon ou tout autre moyen adéquat plutôt que des pré-perforations en pointillés. Comme on le voit sur la figure 7, le manchon rétractable recouvre une partie de la surface arrière de la craie. Par thermo-rétraction, on obtient un retour de la paroi du manchon, légèrement plus long que la craie. Cette protection de la face arrière de la craie est importante pour éviter les salissures et souillures des machines, notamment d'emballage des craies et éviter ainsi des temps morts importants dus au nettoyage de ces machines. Also in this embodiment, the networks of lines of weakness can be achieved by weakening the wall of the sleeve or any other suitable means rather than dotted pre-perforations. As seen in Figure 7, the retractable sleeve covers part of the back surface of the chalk. By heat-shrinking, we get a return of the wall of the sleeve, slightly longer than the chalk. This protection of the rear face of the chalk is important in order to avoid soiling and soiling of the machines, in particular packaging of the chalks, and thus avoid significant downtime due to the cleaning of these machines.

Claims

REVENDICATIONS
1. Manchon de protection pour une craie formé par soudage longitudinal d'une feuille de matériau thermorétractable pour constituer un cylindre d'un diamètre légèrement plus grand que le diamètre extérieur du corps de la craie qu'il doit recouvrir, caractérisé par le fait qu'il comporte deux lignes d'affaiblissement longitudinales s'étendant sur toute sa longueur; et des lignes transversales d'affaiblissement fermées sur elles-mêmes, définissant plusieurs tronçons dans la longueur du manchon, et par le fait que le manchon de protection comporte, disposés approximativement entre les lignes d'affaiblissement longitudinales, des moyens de préhension et d'arrachage facilitant l'enlèvement tronçon par tronçon du manchon de protection.1. Protective sleeve for a chalk formed by longitudinal welding of a sheet of heat-shrinkable material to form a cylinder with a diameter slightly larger than the outside diameter of the body of the chalk which it must cover, characterized in that 'It has two longitudinal weakening lines extending over its entire length; and transverse weakening lines closed on themselves, defining several sections in the length of the sleeve, and by the fact that the protective sleeve comprises, arranged approximately between the longitudinal weakening lines, gripping means and uprooting facilitating the removal section by section of the protective sleeve.
2. Manchon selon la revendication 1 , caractérisé par le fait que les lignes d'affaiblissement sont constituées par des pré-découpes en pointillés du manchon.2. Sleeve according to claim 1, characterized in that the weakening lines are constituted by dotted pre-cuts of the sleeve.
3. Manchon selon l'une des revendications précédentes, caractérisé par le fait que les lignes d'affaiblissement longitudinales sont disposées de part et d'autre de la zone de soudure du manchon.3. Sleeve according to one of the preceding claims, characterized in that the longitudinal weakening lines are arranged on either side of the weld zone of the sleeve.
4. Manchon selon l'une des revendications 1 à 3, caractérisé par le fait que les moyens de préhension et d'arrachage sont constitués par des ouvertures que comporte chaque ligne du réseau de lignes d'affaiblissement transversal; ces ouvertures étant situées dans la zone située entre les lignes d'affaiblissement longitudinales; la longueur de ces ouvertures étant au moins égale à la distance séparant ces deux lignes d'affaiblissement longitudinales. 4. Sleeve according to one of claims 1 to 3, characterized in that the gripping and tearing means are constituted by openings that comprise each line of the network of transverse weakening lines; these openings being located in the area between the longitudinal lines of weakness; the length of these openings being at least equal to the distance separating these two longitudinal weakening lines.
5. Manchon selon l'une des revendications 1 à 3, caractérisé par le fait que les lignes d'affaiblissement transversales comportent, dans la zone située à proximité des lignes d'affaiblissement longitudinales, des décrochements de manière à former des languettes.5. Sleeve according to one of claims 1 to 3, characterized in that the transverse weakening lines have, in the area located near the longitudinal weakening lines, notches so as to form tongues.
6. Manchon selon la revendication 5, caractérisé par le fait que les moyens de préhension et d'arrachage sont constitués par les languettes des tronçons du manchon, définies par les décrochements des ligne d'affaiblissement transversales.6. Sleeve according to claim 5, characterized in that the gripping and tearing means are constituted by the tongues of the sections of the sleeve, defined by the recesses of the transverse weakening lines.
7. Manchon selon l'une des revendications précédentes, caractérisé par le fait qu'il comporte entre les lignes d'affaiblissement longitudinales, une bande d'arrachage soudée ou collée sur la surface intérieure du manchon entre les lignes d'affaiblissement longitudinales. 7. Sleeve according to one of the preceding claims, characterized in that it comprises between the longitudinal weakening lines, a tear strip welded or bonded to the inner surface of the sleeve between the longitudinal weakening lines.
PCT/IB1999/001059 1998-06-11 1999-06-09 Chalk stick provided with protective sleeve and shrinkable protective sleeve WO1999064253A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP99922432A EP1084042A1 (en) 1998-06-11 1999-06-09 Chalk stick provided with protective sleeve and shrinkable protective sleeve
JP2000553291A JP2002517342A (en) 1998-06-11 1999-06-09 Choke stick and shrinkable protective sleeve with protective sleeve

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH1268/98 1998-06-11
CH126898 1998-06-11
CH58199 1999-03-26
CH581/99 1999-03-26

Publications (1)

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WO1999064253A1 true WO1999064253A1 (en) 1999-12-16

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EP (1) EP1084042A1 (en)
JP (1) JP2002517342A (en)
WO (1) WO1999064253A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10369834B2 (en) 2017-10-24 2019-08-06 Jacob Landers Crayon wrapping system

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US1761407A (en) * 1929-05-25 1930-06-03 Blaisdell Pencil Company Pencil
DE510035C (en) * 1930-10-15 Irmgart Morgan Geb Kliemke Blackboard chalk
US2205907A (en) * 1940-02-20 1940-06-25 John H Oxley Crayon holder
DE2538965A1 (en) * 1974-09-06 1976-03-25 Idemitsu Kosan Co SHARPNESS PEN
GB2227978A (en) * 1989-02-10 1990-08-15 Ofrex Group Holdings Plc Artist's pastel or chalk
CH688132A5 (en) 1993-01-22 1997-05-30 Bosch Gmbh Robert Impact wrench.

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DE103501C (en) *
DE510035C (en) * 1930-10-15 Irmgart Morgan Geb Kliemke Blackboard chalk
US1761407A (en) * 1929-05-25 1930-06-03 Blaisdell Pencil Company Pencil
US2205907A (en) * 1940-02-20 1940-06-25 John H Oxley Crayon holder
DE2538965A1 (en) * 1974-09-06 1976-03-25 Idemitsu Kosan Co SHARPNESS PEN
GB2227978A (en) * 1989-02-10 1990-08-15 Ofrex Group Holdings Plc Artist's pastel or chalk
CH688132A5 (en) 1993-01-22 1997-05-30 Bosch Gmbh Robert Impact wrench.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10369834B2 (en) 2017-10-24 2019-08-06 Jacob Landers Crayon wrapping system

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EP1084042A1 (en) 2001-03-21

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