EP3370975A1

EP3370975A1 - Pencil

Info

Publication number: EP3370975A1
Application number: EP16805002.9A
Authority: EP
Inventors: Stephan Eisen
Original assignee: Eisen GmbH
Current assignee: Eisen GmbH
Priority date: 2015-11-04
Filing date: 2016-11-03
Publication date: 2018-09-12
Anticipated expiration: 2036-11-03
Also published as: DE102015118940A1; WO2017076960A1; EP3370975B1

Abstract

The invention relates to a pencil (1), comprising a core (2) and a casing element (4) which encases said core at least in sections, wherein the casing element (4) is formed at least in sections, particularly completely, of a wax-like material.

Description

pen

DESCRIPTION

The invention relates to a pin, comprising a mine and a sheathing element covering the same at least in sections.

Pins comprising mines and a sheathing element covering them at least in sections are known. The casing of the mine with a corresponding casing element may be useful in various aspects; For example, a sheath element of a less dimensionally stable or very soft mine, as they u. a. used in cosmetic pencils, give a certain dimensional stability.

To date, corresponding sheath elements of relatively stable materials such. B. wood or wood substitutes formed. For a sharpening of the pin or the jacketed mine of the pen accordingly sharpeners with mechanically comparatively stable tip elements are required. Typically, for sharpening corresponding pins, sharpeners with hardened steel tip elements having a hardness above 60 HRC (Rockwell hardness) are used.

Due to the Anspitzeigenschaften corresponding pins or mines, which compelling the use mechanically sufficiently stable, d. H. In particular, hard, pointed elements require, the production of corresponding sharpeners is relatively expensive or costly under production or economic aspects.

The invention has for its object to provide a pen with the contrast improved Anspitzeigenschaften.

The object is achieved by a pin according to claim 1. The dependent claims relate to various embodiments of the pen. The object is further achieved by a mine according to claim 19.

The pin described herein may in principle be any type of pin having a corresponding sheathed lead. By way of example only, as possible embodiments of the pen, writing or crayons, i. H. z. Pencils, crayons, chalk pencils, wax pencils, or cosmetic pencils, d. H. z. B. cover, eyebrow, lip or Kajalstifte called.

The mine is made of at least one on a substrate, for. B. paper for a writing or drawing pen or certain areas of the skin for a cosmetic pencil, applicable mine material or at least includes such. The mine is typically less dimensionally stable or very soft, the pin is thus typically a soft pencil - so at least partially sheathing with a corresponding sheath element is required or required. In principle, however, it is also conceivable that the mine is comparatively dimensionally stable or hard - which means that the pin may in principle also be a hard lead pin, from the lead of which the sheath element covering it is to be temporarily removed in order to expose the lead.

Regardless of the structural properties of the mine, the mine is at least partially surrounded by a sheath element or at least partially encased with a sheath element. The shroud typically extends at least in sections along the exposed surface of the mine and therefore typically rests directly on the exposed surface of the mine. Unless the pin has a receiving element (housing), the sheath element may form the exposed outer (upper) surface of the pin. There is typically a stable, in particular non-rotatable, connection between the sheathing element and the mine.

The sheath element can prevent the mine from aging, oxidation or external influences, d. H. z. B. mechanical and / or thermal and / or climatic influences, in particular moisture, and / or in function of a "diffusion barrier" against the outdiffusion, in particular volatile, protect components of the mine.The aspect of a corresponding diffusion barrier, in particular for embodiments of the pen as a cosmetic pencil Of importance, since the mines of cosmetic pencils regularly contain volatiles.

The effect of a "diffusion barrier" may arise solely from the structural properties of the cladding element and, concretely, the cladding element may inherently have a density or permeability which prevents outdiffusion of corresponding components of the mine.

If the sheathing element does not have an inherent density or permeability, which prevents the corresponding components of the mine from diffusing out, a diffusion barrier to components of the mine which are contained in the mine, in particular volatile, can also be formed in such a way by the sheathing element with corresponding volatile constituents the mine or these chemically similar volatiles is saturated or supersaturated. The respective concentrations or (small) concentration differences of corresponding volatile constituents in the mine and in the shell element complicate or prevent the diffusion of the volatile constituents of the mine from the mine. By a saturation or supersaturation of the sheath element with corresponding volatile constituents of the mine or these chemically similar volatile constituents, a "depot effect" can be obtained, which is a diffusion of volatiles contained in the sheath element in the mine, possibly even a back diffusion of from Mine in the Casing element diffused volatiles back into the mine, allowed, so that a certain concentration of corresponding volatiles in the mine can be ensured.

The pin can be used in a variant without a receiving element for receiving the at least partially sheathed mine by a user directly to the mine respectively the sheathing that surrounds this sheath element. In one embodiment, the pin can be gripped by a user directly on the receiving element with a receiving element for receiving the at least partially sheathed mine.

The sheathing element covering the refill, at least in sections, is formed at least in sections, in particular completely, from a waxy material. In all cases, therefore, the sheathing element at least in sections, in particular completely, a waxy and comparatively, d. H. in particular compared to pure plastics (polymers), soft, d. h., As can be seen below, in particular, also low impact, texture on.

The waxy nature of the sheath element generally results in particular material removal properties. The special Materialabtragseigenschaften allow a particularly simple removal of material from the sheath element.

The waxy nature of the sheath element results in particular in particular tipping or molding properties. The special Anspitz- or Anformeigenschaften allow a simple sharpening or molding with relatively soft, d. H. especially uncured, pointed elements. The waxy or soft nature of the sheath element results from the further explained below chemical-physical or structural properties of the waxy material.

The waxy nature of the sheath element determines the Anspitz- or Anformeigenschaften essential. The tipping or molding properties typically differ significantly from known wood or plastic tipped pens; Thus, the torque required for sharpening or molding with a conventional mint sharpener having a hardened and ground blade-shaped tip member is typically well below the torque typically required to sharpen a wood or plastic-tipped pin. The torque of the lead required for sharpening or molding can be significantly below 6 Ncm, in particular at 40 revolutions per minute.

For sharpening or molding of the pin or the mine are in contrast to the known from the prior art jacketed mines no sharpeners with mechanically particularly stable, ie in particular hardened, pointed elements, ie especially pointed elements made of hardened steel, required. The waxy nature of the sheath may optionally even a material removal, for. B. by scraping, of the sheath element, at least one deformation, ie a scoring, the sheath element, allow with a fingernail.

The pen can be due to the waxy nature of the sheath element sonach without problems even with pointed elements of comparatively soft materials, d. H. z. As comparatively soft or uncured metals, especially unhardened steels, or plastic, sharpen, without this an extraordinary wear of the pointed elements occurs. The pointed elements are therefore less stressed by the sharpening of the pin compared to conventional pins. It follows that the sheathing element by a comparatively soft material, d. H. z. B. a comparatively soft or uncured metal, in particular uncured steel, or a plastic, formed pointed element easily ab- or sharpened or off or is anformbar. By a comparatively soft metal is meant, in particular, a metal having a hardness of at most 40 HRC (hardness Rockwell). In contrast, hardened steels, such as are required and used for sharpening known pins for a certain stability or cutting edge hitherto, typically have a hardness of at least 60 HRC (Rockwell hardness).

The possibility of sharpening the pin with uncured metals, in particular uncured stainless steels, or formed by plastics pointed elements has, in particular in connection with cosmetic pencils, also positive for the formation of corresponding sharpeners, since they do not rust and thus not with rust prevention measures, especially rust-proof coatings, must be provided. The sharpeners can be in a comparatively simple way, d. H. For example, by rinsing with water, clean, without corroding.

The sheathing element differs in its structural properties and thus in its Anspitz- or Anformeigenschaften insofar clearly from known, typically made of wood, wood substitutes or plastics (polymers), sheaths of pins. The wax-like material forming the sheathing element therefore does not represent a wood substitute due to its structural properties, in particular due to its particular pointing or conforming properties.

Sharp elements of conventional sharpeners usually have a cutting edge width of approximately 1 μm on the cutting edge. The cutting edge width of the tip elements of conventional sharpeners can be razor sharp. From a cutting edge width of 5 μηη corresponding tip elements for sharpening conventional pins are no longer suitable, as they allow (with normal force) no sharpening more. The cutting edge width is defined as follows: a pointed element has in the region of its free end on a curved or curved area extending through which defines the cutting edge radius. The cutting edge width is defined by the distance between the opposite points of the pointed element at which the arcuate region and hence the cutting edge radius begins, ie the distance between the respective points at which the tip element tangentially merges into the cutting edge radius. This distance is comparatively small for sharp pointed elements, ie in particular below 5 μm, and comparatively large for blunt pointed elements, ie in particular (far) above 5 μm.

Compared to known wood or wood substitute composited pens, the pin described herein differs particularly in its Anspitzverhalten when he with little fine or less sharp pointed elements (cutting) with cutting edge radii or cutting edge widths (far) above 10 μηη , d. H. z. B. a cut edge width of about 20 μηη or (far) more, easily molding or sharpening. With such pointed elements known pens taken from wood or wood substitute material can not be molded or sharpened.

In comparison to known pins made of plastic, the pin described herein differs in particular in its Anspitzverhalten or as it can be with little fine or sharp pointed elements (cutting) with cutting edge radii above 10 μηη molding or sharpening. As mentioned, the sheath element of the pin described herein has lower hardness compared to plastic sheaths of known pins. Further, the torque required to sharpen the pin described herein is lower compared to known pins having plastic sheaths.

The waxy material and thus also the sheath element can be formed exclusively from one or more (different) waxy constituent (s). The waxy material may accordingly contain only waxy ingredients. The waxy ingredient (s) condition or condition the particular structural properties described, i. H. in particular the special Anspitz- or Anformeigenschaften, the sheath element.

However, it is also conceivable that the wax-like material and thus also the sheath element is formed from at least one waxy constituent and at least one non-waxy constituent. Non-waxy constituents may be inorganic and / or organic additives, in particular additives or fillers, such as. As thermoplastics (polymers), graphite, wood flour, calcium carbonate (lime), kaolin or talc, color pigments, etc. be. The waxy material may also contain, in addition to one or more (different) waxy ingredients, one or more (different) non-waxy ingredients. If the waxy material also contains non-waxy constituents, the proportion of waxy constituents is so high compared to the non-waxy constituents that the Casing element in any case has the mentioned waxy nature. The wax-like component (s) also condition or condition here the particular structural properties described, ie in particular the particular pointing or conforming properties of the sheathing element.

Specific proportions of the sheath member, d. H. also concrete (quantitative) proportions of the waxy material, resulting from the particular concrete composition of the waxy constituents and / or the (respective) concrete composition of the non-waxy constituents. The proportion of the waxy constituents is typically at least 30% by weight, in particular above 50% by weight. Accordingly, the proportion of non-waxy constituents is typically at most 70 wt .-%, in particular below 50 wt .-%.

The waxy material is typically such that the shroud element performs the tasks typically required by the application, i. H. in particular a protection of the mine against external influences, d. H. mechanical and / or thermal and / or climatic influences, in particular moisture, and / or as a function of a "diffusion barrier" before out-diffusion, in particular volatile, constituents of the mine, so that the mine is not impaired in its original function and handle easily The waxy constituents influence the properties of the cladding element insofar in particular with regard to an improvement in the pointing or molding properties.

The hardness of the sheath element is typically below 60 Shore D. In particular, the hardness of the sheath element in a hardness range between 10 and 50 Shore D. However, the hardness of the sheath element may be significantly below 10 Shore D in embodiments of the pin with a corresponding receiving element. The hardness of the cladding element can be specifically varied by its concrete proportionate or chemical composition, in particular the addition of non-waxy constituents.

The impact resistance of the sheath element is typically below the impact strength of non-waxy polyolefinic polymers, i. H. especially below the impact strength of polyethylene and polypropylene.

A waxy ingredient may in particular be a wax.

Waxes can generally be defined by different chemical or physical or structural parameters or properties, which will be discussed in more detail below by way of example. Decisive in this case is in particular the structural structure of the waxes, since this determines the chemical-physical or structural properties significantly. The structural structure of waxes typically consists of particular molecules or molecular compounds. The chemical-physical properties of waxes are determined essentially by the molecular weight or the chain length of the molecules or molecular compounds. The molecular weight or the chain length of the molecules or molecular compounds is typically below the molecular weight or the chain length of, for. B. thermoplastic, plastics. Accordingly, ethylenes having a comparatively low molecular weight or a comparatively short chain length are waxes. By increasing the molecular weight or the chain length of the ethylene lose their waxy properties, it is no longer waxy materials, but "solid" or "hard" plastics.

The structural structure of waxes is characterized by a coarse to fine crystalline structure. The coarse to fine-crystalline structure also influences the optical properties of waxes. Waxes typically have some opacity.

Likewise, the structural design of a comparatively low abrasion resistance. The abrasion resistance is typically below the abrasion resistance of polyolefinic polymers.

In terms of thermal properties, waxes are characterized by the fact that at temperatures above 40.degree. C. they decompose to a melt-free state or do not turn into a melt-shaped state at temperatures below 40.degree. Waxes are basically highly temperature dependent in their consistency and solubility. Typically, waxes are already comparatively low in viscosity at temperatures slightly above their respective melting point. At temperatures below their melting point, especially at temperatures of about 20 ° C, waxes are kneaded or hard to brittle hard. Of course, the wax-like constituent or the wax-like material in concrete embodiments of the pen may, if appropriate, have a higher thermal stability than pure waxes. In terms of mechanical properties, waxes are characterized in particular by a comparatively low hardness. As mentioned, the hardness of the sheath element and thus of the waxy material forming it is typically below 60 Shore D, in particular in a hardness range between 10 and 50 Shore D. The hardness of the sheath element can, as mentioned, be determined by its concrete proportion or chemical composition deliberately vary.

Waxes are, in particular already under the influence of relatively low temperatures, good formability. In addition, it is already possible to remove material from waxes with comparatively low forces, ie in particular to lift off chips. The material removal or chip formation is determined in particular by the brittleness of the respective wax. Waxes can be a material removal, z. B. by scraping, at least one deformation, ie a Scoring, with a fingernail enable.

The abovementioned chemical-physical or structural properties of waxes may, of course, vary depending on the specific structural structure or the specific proportionate or chemical composition of the waxes or waxy constituents or waxy materials formed accordingly from waxes. For the waxy material used to form the sheath element, the structural properties of waxes in their solid state are particularly relevant.

The waxy constituent may be formed from at least one natural, in particular vegetable and / or animal and / or geological, wax and / or at least one synthetic wax. The waxy constituent may thus be a natural or synthetic wax or a mixture of (different) natural and / or (different) synthetic waxes. If a mixture of (different) natural and / or (different) synthetic waxes is present, these may vary in their structural properties, i. H. z. B. in their melting points, the same, similar or different. A waxy material can therefore be used as waxy components z. B. low melting waxes, d. H. especially in a temperature range between 40 and 60 ° C melting waxes, and refractory waxes, d. H. especially in a temperature range between 80 and 160 ° C melting waxes included.

If the waxy ingredient is formed from a natural wax, the natural wax may be formed from natural hydrocarbon compounds or contain natural hydrocarbon compounds. The molecular weight or chain length of the hydrocarbon compounds is significantly responsible for the waxy properties of the natural wax. The molecular weight or the chain length of the hydrocarbon compounds is thus chosen so low that the hydrocarbon compounds form a wax. The same applies to other parameters relating to the hydrocarbon compounds, ie. H. optionally for branching and crosslinking levels.

In principle, all fossil or non-fossil waxes come into consideration as natural waxes. Fossil waxes may be petroleum waxes, especially ozokerite and macro- or microcrystalline fossil paraffin waxes. Fossil waxes can continue geological waxes, z. B. lignite, peat or montan waxes, especially geological acid waxes, ester waxes or partially saponified waxes, be. Non-fossil waxes may be animal waxes, especially bee, shellac, spermaceti or wool waxes. Non-fossil waxes may further be vegetable waxes, especially candelilla, carnauba, china, japanese or sugarcane waxes. Natural waxes may generally be formed from at least one natural wax of the following group or contain at least one natural wax of the following group: beeswax, candelilla wax, carnauba wax, china wax, japan wax, spermaceti, wool wax, sugarcane wax, Montan wax, earth wax.

When the waxy component is formed from a synthetic wax, the synthetic wax may be formed from synthetic hydrocarbon compounds or contain synthetic hydrocarbon compounds. The molecular weight or the chain length of the hydrocarbon compounds is significantly responsible for the waxy properties of the synthetic wax. The molecular weight or the chain length of the hydrocarbon compounds is thus chosen so low that the hydrocarbon compounds form a wax. The same applies to other parameters relating to the hydrocarbon compounds, ie. H. optionally for branching and crosslinking levels. The hydrocarbon compounds are, in particular, oligomers which, owing to a comparatively low molecular weight or a comparatively small chain length, are present as waxes or have wax-like properties.

In principle, all partially or fully synthetic waxes come into consideration as synthetic waxes. Semi-synthetic waxes may fatty acid amide waxes, in particular distearylethylenediamides or erucamides, or hydrogenated fatty acid waxes, for. B. produced by hydrogenation of soybean oil soy wax. Fully synthetic waxes may be (non-polar) polyolefin waxes, especially polyethylene or polypropylene waxes. Fully synthetic waxes may continue to be Fischer-Tropsch waxes, i. H. waxes produced by the Fischer-Tropsch process. Fully synthetic waxes may also be polar synthetic waxes, in particular oxidized or grafted polyolefin waxes or copolymer waxes. Synthetic waxes may generally be formed from at least one aliphatic or polyolefinic wax, in particular based on paraffin, polyethylene or polypropylene, or contain at least one aliphatic or polyolefinic wax, in particular based on paraffin, polyethylene or polypropylene.

The use of aliphatic or polyolefinic waxes is more particular in particular with regard to the molecular weights or chain lengths which can be specifically adjusted or influenced by controlled polymerization or oligomerization

Hydrocarbon compounds and thus the targeted controlled by controlled polymerization or oligomerization properties of appropriate aliphatic or polyolefinic waxes appropriate. The use of aliphatic or polyolefinic waxes is also useful due to the good processing properties and their non-toxic properties. In addition, the use of aliphatic or polyolefinic waxes may be expedient from an economic point of view. In principle, it is true that aliphatic or polyolefinic compounds having a certain molecular weight or a specific chain length, regardless of whether it is z. As amines, aldehydes, alcohols, ethers, esters, ketones, etc., have waxy properties.

A waxy ingredient may consist of an ester compound, especially a fatty acid Ester compound, or a salt of a fatty acid ester compound (soap). Accordingly, waxy constituents may also consist of, optionally saponified, fats or fatty acid ester compounds, eg. Formed based palmitic or stearic acid, and / or natural resins or resin compounds.

The sheathing element may have a higher mechanical stability, in particular a higher dimensional stability or dimensional stability and / or a higher hardness, than the mine. The sheath element is sufficiently stable despite its waxy nature, d. H. particularly dimensionally stable, that it does not deform under normal handling of the pen. A comparatively higher mechanical stability, in particular a higher dimensional stability or dimensional stability, of the sheathing element by adding certain non-waxy constituents, for. B. by addition of organic additives, d. H. z. As thermoplastics (polymers), such as polyethylene or polypropylene, result. However, a comparatively higher mechanical stability, in particular a higher dimensional stability or dimensional stability, of the sheathing element can also result from a comparatively large wall thickness of the sheathing element.

In principle, it is possible that the mine is (also) formed from a waxy material or comprises at least one such. This can be especially true for chalk or wax pencils, d. H. especially wax crayons, or cosmetic pencils be the case. The waxy material of the mine and the waxy material of the sheath element typically differ in their chemical and / or physical, and in particular mechanical, properties. As mentioned, the sheathing element may have a higher mechanical stability, in particular a higher dimensional stability or dimensional stability and / or a higher hardness, and thus different structural properties than the mine.

The mine and the sheathing element can, in particular in one piece, also be formed from the same waxy material. The cladding element may then be due to at least one carried out in the region of its surface action to increase the mechanical stability, in particular the dimensional stability or dimensional stability and / or hardness, in particular a treatment with high-energy radiation, eg. As electron or UV radiation, a higher mechanical stability, in particular a higher dimensional stability or dimensional stability and / or a higher hardness, as the mine.

The, in particular one-piece, training of the mine and the sheath element of the same waxy material can bring manufacturing advantages. The sheathing element can be formed via the near-surface implementation of a corresponding measure to increase the dimensional stability and / or the mechanical stability. By varying certain procedural parameters, ie in particular duration, energy density, intensity, etc., of the measure, the sheathing element with certain structural properties, ie, for example, one desired thickness, dimensional stability and mechanical stability, are formed.

Of course, it is possible, the cladding element in the region of its exposed outer (upper) surfaces at least partially provided with a coating or sheath to affect the haptic impression when touching the sheath element or a handling of the pin targeted. A corresponding coating can, for. B. be formed by a lacquer which can be removed in a sharpening or molding of the pen. A corresponding enclosure may, for. B. be formed by a paper or pulp material, which can be removed in a sharpening or molding of the pen (with).

In the following, different variants of the casing of the mine are explained in more detail by the casing element. These are always based on an elongated, d. H. in particular cylindrical or prismatic, geometric shape of the mine or the pin.

Starting from a mine having an elongated geometric shape, the sheathing element can either at least partly cover the mine in the region of its longitudinal side or encase the mine in the region of its longitudinal side and in the region of at least one free end of the mine. In the case of a brand-new pin, it is also possible for both free ends of the lead to be sheathed so that the sheath element can be removed in the region of the free end forming the lead tip before the pin is used. A complete casing of the mine, for example, for transport and storage of brand new pens, especially brand new softwood pencils, be useful because the mine is protected from external influences.

The pin can, as mentioned, comprise a receiving element for receiving the at least partially sheathed mine. The at least partially coated mine is then at least partially included in the receiving element. The receiving element may have a (hollow) cylindrical or prismatic outer geometric shape or basic shape and a, in particular cylindrical, receiving or interior space for receiving the lead or other components of the pin. The receiving element may also be referred to or considered as the housing of the pen. The receiving element may be formed from a polymer plastic (polymer).

If the pin comprises a corresponding receiving element for receiving the at least partially shrouded mine, it may further comprise a mine feed device, which is adapted to the recorded in the receiving element at least partially sheathed mine in a movement, ie in particular in an axial feed movement, relative to the To move recording element. The mine feed device is therefore used to exert a force on the recorded in the receiving element mine, which in an axial feed movement of the mine relative results to the receiving element. Of course, can be realized on the mine feed device in principle, an axial feed movement opposite axial return movement of the mine. However, an axial retracting movement of the refill may, if appropriate, be prevented by suitable blocking elements, so that the refill can only be set into an axial advancing movement. The lead-advancing device may comprise an actuatable element which can be coupled or coupled to the refill and which can be actuated by a user, e.g. B. can be operated via an actuating portion to move the mine in a corresponding movement relative to the receiving element.

The invention further relates to a refill for a pen, in particular for a stylus as described above. The mine is at least partially encased with or by a sheath element. The mine is characterized in that the sheathing element is at least partially, in particular completely, formed from a waxy material. Accordingly, all statements in connection with the mine of the above described pin apply analogously to the mine.

The invention further relates to a sharpener device for a pin as described above or a mine as described above. The sharpener is designed to sharpen or mold the lead of the pencil. The spreader device is characterized in that it comprises at least one of a comparatively soft material, i. H. z. B. an uncured metal, in particular an unhardened steel or stainless steel, or a plastic, in particular polyamide, polycarbonate or polyethylene terephthalate, formed, typically blade or schneidenformiges, spiked element comprises. The spreader device can be formed integrally overall. In the Spitzereinrichtung can be z. B. to act an injection molded part of an injection-moldable plastic. In a (additional) Faconmesser comprehensive Spitzereinrichtung, d. H. z. B. a sharpener for a cosmetic pencil, the Faconmesser can therefore be formed integrally with the, in particular blade or blade-shaped, pointed element and / or other components of the sharpener.

The possibility of sharpening or molding the coated mine by unhardened metals, especially uncured steels or stainless steels, or plastics formed pointed elements, as mentioned, especially in connection with cosmetic pencils, has a positive effect on the spreader or the associated pointed elements because they do not rust and therefore do not need to be provided with anti-corrosion measures, in particular anti-corrosion varnishes. The sharpeners can be in a comparatively simple way, d. H. For example, by rinsing with water, clean, without corroding.

The invention is explained in more detail with reference to embodiments in the drawing figures. Showing: 1 - 3 each a schematic diagram of a pin according to an embodiment;

4 is a schematic diagram of a sharpener sharpener of FIG. 1, FIG.

2 or 3 pin shown;

Fig. 5, 6 each a schematic diagram of a pin according to another

Embodiment.

Fig. 1 shows a schematic diagram of a pin 1 according to a first embodiment. The pin 1 is shown in Fig. 1 in a longitudinally sectioned view.

The pin 1 comprises a mine 2. The mine 2 comprises an elongated mine base body 3. The mine 2 is made of a on a substrate, for. B. paper for a writing or drawing pen or certain areas of skin for a cosmetic pencil, applicable mine material or at least includes such.

The mine 2 is less dimensionally stable or very soft, - in the pen 1 is therefore a soft pencil - so at least partially sheathing with a sheath element 4 is required or required. In principle, however, it would also be conceivable that the lead 2 is comparatively dimensionally stable or hard - the pin 1 could in principle also be a hard lead pin, from the lead 2 of which the covering element 4 sheathing it is to be temporarily removed from the lead 2 uncover.

The mine 2 is partially surrounded by a sheath element 4 or partially covered with a sheath element 4. The casing element 4 extends at least in sections along the exposed surface of the lead 2 and therefore lies directly on the exposed surface of the lead 2. There is a stable, in particular non-rotatable, connection between the sheathing element 4 and the refill 2.

Obviously, the sheath element 4 surrounds the mine 2 in the area of its longitudinal side and in the region of a free end, so that the sheathing element 4 has a U-shaped geometric shape in the longitudinally-sectioned view shown in FIG. The sheath element 4 forms (essentially) the exposed outer (upper) surface of the mine 2 or of the pin 1.

The sheath element 4 protects the mine 2 against aging, oxidation and external influences, d. H. in particular mechanical and / or thermal and / or climatic influences, in particular moisture, and / or as a function of a "diffusion barrier" before out-diffusion, in particular volatile, constituents of the mine 2.

The pin 1 may in principle be any kind of pin 1, which one correspondingly sheathed mine 2, act. For example, the pen 1 may be a writing or drawing pen, ie, for example, a pencil, colored pencil, chalk pen, wax pen, or a cosmetic pencil, ie, a mask, eyebrow, lip or kohl pencil.

The mine 2 partially covering sheathing element 4 is formed of a waxy material. The sheath element 4 therefore has a waxy and comparatively soft nature. The waxy or soft nature of the sheath element 4 results from the chemical-physical or structural properties of the waxy material.

The waxy nature of the sheath element 4 results in particular material removal properties, i. H. in particular in particular Anspitz- or Anformeigenschaften which a particularly simple removal of material from the sheath element 4, in particular a particularly simple sharpening or molding with comparatively soft, d. H. allow in particular uncured, pointed elements 5.

Due to the waxy and relatively soft nature of the sheath element 4, the Anspitz- or Anformeigenschaften the pin 1 differ significantly from wood-covered pins; so z. B. the torque required for sharpening or molding significantly below the required for sharpening a known wood or plastic-formed pin with a conventional mint sharpener with a hardened and ground tip element torque. For sharpening or molding of the pin 1 and the mine 2 are not sharpeners with mechanically particularly stable, d. H. in particular hard, pointed elements 5, d. H. in particular pointed elements 5 made of hardened steel, required. The waxy nature of the sheath element 4 may optionally even a material removal, for. B. by scraping, from the sheath element 4, at least one deformation, d. H. allow scratching of the sheath element 4 with a fingernail.

Due to the waxy nature of the sheathing element 4, the pin 1 can be easily sharpened even with pointed elements 5 made of relatively soft materials, ie, comparatively soft or uncured metals, in particular uncured steels, or plastic, without this resulting in exceptional wear Point elements 5 occurs. The pointed elements 5 are less stressed by the tipping compared to conventional mines. It follows that the sheathing element 4 by a relatively soft material, ie, for example, a comparatively soft or uncured metal, in particular uncured steel, or a plastic, formed sharpener element 5 easily absp or abspitzbar or ab- or formable is. By a comparatively soft metal is meant, in particular, a metal having a hardness of at most 40 HRC (hardness Rockwell). In contrast, have hardened steels, as they are used for sharpening known pins for a certain stability or cutting edge hitherto required and used, typically a hardness of at least 60 HRC (hardness Rockwell) on.

The sheathing element 4 differs in its structural properties, in particular in its Anspitz- or Anformeigenschaften, significantly from known, typically formed from wood or wood substitutes, sheaths of pins. The waxy material forming the sheathing element 4 does not represent a wood substitute due to its structural properties, in particular its particular pointing or conforming properties.

The waxy material and thus also the sheath element 4 can be formed exclusively from one or more (different) waxy constituents. The waxy material may accordingly contain only waxy ingredients. The waxy ingredient (s) condition or condition the particular structural properties described, i. H. in particular the special pointing or molding properties of the sheathing element 4.

However, it is also conceivable that the wax-like material and thus also the sheath element 4 is formed from at least one waxy constituent and at least one non-waxy constituent. Non-waxy constituents may be inorganic and / or organic additives or fillers, such as. As graphite, wood flour, calcium carbonate (lime), kaolin or talc, color pigments, etc. be. The waxy material may also contain, in addition to one or more (different) waxy ingredients, one or more (different) non-waxy ingredients.

If the waxy material also contains non-waxy constituents, the proportion of waxy constituents is so high in comparison to the non-waxy constituents that in any case the sheathing element 4 has the aforementioned waxy nature. Specific proportions of the sheath member 4, d. H. also concrete (quantitative) proportions of the waxy material, resulting from the particular concrete composition of the waxy constituents and / or the (respective) concrete composition of the non-waxy constituents. The proportion of the waxy constituents is typically at least 30% by weight, in particular above 50% by weight.

The wax-like material is such that the sheathing element 4 fulfills the abovementioned objects, ie in particular protection of the mine 2 from external influences, ie in particular mechanical and / or thermal and / or climatic influences, in particular moisture, and / or as a function of " Diffusion barrier "before the outdiffusion, in particular volatile, constituents of the mine 2, or as a function of a" depot "a diffusion of in the corresponding volatiles of the mine 2 saturated or supersaturated jacket element 4 volatiles contained in the mine 2, so that the mine 2 is not impaired in their original function and can be handled easily. The waxy material influences the properties of the sheath element 4 in this respect, in particular with regard to an improvement of the tipping or molding properties.

The hardness of the sheath element 4 is (significantly) below 60 Shore D, in particular in a hardness range between 10 and 50 Shore D. The impact resistance of the sheath element 4 is below the impact resistance of polyolefinic polymers, i. H. especially below the impact strength of polyethylene and polypropylene.

Waxy components of the waxy material may be formed from at least one natural, in particular vegetable and / or animal and / or geological, wax and / or at least one synthetic wax. Waxy ingredients may be natural or synthetic wax or a mixture of different natural and / or synthetic waxes.

In the embodiments shown in FIGS. Contains the waxy material as a waxy component at least z. As a synthetic wax. The synthetic wax is formed from synthetic hydrocarbon compounds or contains synthetic hydrocarbon compounds. The molecular weight or the chain length of the hydrocarbon compounds is significantly responsible for the waxy properties of the synthetic wax. The molecular weight or the chain length of the hydrocarbon compounds is so low that the hydrocarbon compounds form a wax. The same applies to other parameters relating to the hydrocarbon compounds, ie. H. optionally for branching and crosslinking levels. The hydrocarbon compounds are, in particular, oligomers which, owing to a comparatively low molecular weight or a comparatively small chain length, are present as waxes or have wax-like properties.

In principle, all partially or fully synthetic waxes come into consideration as synthetic waxes. Synthetic waxes may generally be formed from at least one aliphatic or polyolefinic wax, in particular based on paraffin, polyethylene or polypropylene, or contain at least one aliphatic or polyolefinic wax, in particular based on paraffin, polyethylene or polypropylene. In the embodiments shown in the figures, the synthetic wax is a polyolefinic wax, namely a synthetic polyethylene wax.

The use of polyolefinic waxes is particularly with regard to the controlled by polymerization or oligomerization specifically adjustable or influenced molecular weights or chain lengths of respective hydrocarbon compounds and thus the controlled by controlled polymerization or oligomerization specifically adjustable properties appropriate polyolefinic waxes appropriate. The use of polyolefinic waxes is also useful because of their good processing properties and their non-toxic properties. In addition, the use of polyolefinic waxes may be useful from an economic point of view.

As mentioned, the sheath element 4 could also contain at least one natural wax as waxy constituents. A natural wax is formed from natural hydrocarbon compounds or contains natural

Hydrocarbon compounds. The molecular weight or the chain length of the hydrocarbon compounds is also so low that the hydrocarbon compounds form a wax. The same applies to other parameters relating to the hydrocarbon compounds, ie. H. optionally for branching and crosslinking levels.

In principle, all fossil or non-fossil waxes come into consideration as natural waxes. Natural waxes may generally be formed from at least one natural wax of the following group or contain at least one natural wax of the following group: beeswax, candelilla wax, carnauba wax, china wax, japan wax, spermaceti, wool wax, sugarcane wax, montan wax, ground wax.

The sheath element 4 is sufficiently stable despite its waxy nature, d. H. in particular dimensionally stable, so that it does not deform under normal use of the pen 1. The jacket element 4 may have a higher mechanical stability, in particular a higher dimensional stability or dimensional stability and / or a higher hardness, than the lead 2. The comparatively higher mechanical stability, in particular a higher dimensional stability or dimensional stability, of the sheathing element 4 can be obtained from the addition of non-waxy constituents, ie. H. z. As an addition of non-waxy plastic, and / or result from a compared to the diameter of the mine 2 large wall thickness of the sheath element 4. If, as in the embodiments shown in FIGS. 3, 5, a receiving element 7 for receiving the sheathed mine 2 is present, the sheath element 4 may also have a lower mechanical stability, in particular a lower dimensional stability or dimensional stability and / or a lower hardness , as the mine 2 have.

In principle, it is also possible that the mine 2 is formed from a waxy material or at least comprises such. This may in particular be the case with chalk or wax pencils, ie in particular wax crayons, or cosmetic pencils. The waxy material of the mine 2 and the waxy material of the sheath element 4 may typically differ in their chemical and / or physical, especially mechanical, properties. As mentioned, the sheathing element 4 can have a higher mechanical stability, in particular a higher dimensional stability or dimensional stability and / or a higher hardness, and thus different structural properties Properties as the mine 2 have.

Fig. 2 shows a schematic diagram of a pin 1 according to another embodiment. The pin 1 is also shown in Fig. 2 in a longitudinally sectioned view.

In contrast to the embodiment shown in FIG. 1, the lead 2 and the cladding element 4 in the embodiment shown in FIG. 2, as indicated by the dashed line in the region of the interface between the lead 2 and the cladding element 4, in one piece, d. H. from the same waxy material. However, the cladding element 4 has due to a measure carried out in the area of its surface to increase the mechanical stability, in particular the dimensional stability or dimensional stability and / or hardness, in particular a treatment with high-energy radiation, eg. As electron or UV radiation, a higher mechanical stability, in particular a higher dimensional stability or dimensional stability and / or a higher hardness than the mine 2 on.

The formation of the mine 2 and the sheath element 4 of the same waxy material brings manufacturing advantages. The sheathing element 4 is formed by the near-surface implementation of a corresponding measure to increase the dimensional stability and / or the mechanical stability. By variation of certain procedural parameters, d. H. In particular duration, energy density, intensity, etc., the measure, the sheath element 4 with certain structural properties, d. H. z. As a desired thickness, dimensional stability, mechanical stability, etc., are formed.

As indicated in FIG. 2 by puncturing in the area of the lead tip 6, it would in principle also be possible for the sheath element 4 to completely encase the lead 2 in the case of a brand new pin 1. In the case of a brand-new pin 1, therefore, both free ends of the lead 2 can also be sheathed, so that the sheath element 4 is to be removed in the region of the free end forming the subsequent lead tip 6 before the pin 1 is used. A complete sheathing of the mine 2, for example, for transport and storage brand new pins 1, especially brand new softwood pencils, be useful because the mine 2 is protected from external influences.

Fig. 3 shows a schematic diagram of a pin 1 according to another embodiment. The pin 1 is also shown in Fig. 3 in a longitudinal sectional view.

The pin 1 shown in Figure 3 differs from the pins 1 shown in Figures 1, 2 in that it has a, e.g. B. formed of a plastic, receiving element 7 for receiving the sheathed with a sheath element 4 2 mine. The mine 2 is partially received in the receiving element 7. The receiving element 7 has a (hollow) cylindrical or prismatic outer geometric shape or basic shape and a, in particular cylindrical, receiving or interior space for receiving the mine 2 and other components of the pin 1 on. The receiving element 7 may be referred to as housing of the pin 1 or considered.

Moreover, the pin 1 shown in Fig. 3 differs from the pins 1 shown in Figs. 1, 2 in that it comprises a lead-feeding device 8 adapted to move the sheathed lead 2 received in the receiving element 7 into a movement, d. H. in particular in an axial feed movement, relative to the receiving element 7 to offset (see also the embodiment shown in FIGS. 5, 6). The mine advance device 8 is thus used to exert a force on the received in the receiving element 7 Mine 2, which results in an axial feed movement of the mine 2 relative to the receiving element 7. Of course, via the lead feed device 8, in principle, an axial return movement of the lead 2, which is opposed to an axial feed movement, can also be realized. However, an axial retracting movement of the refill 2 can optionally be prevented by suitable blocking elements (not shown), so that the refill 2 can be displaced exclusively in an axial advancing movement. The mine advance device 8 comprises an actuating element 9 coupled to the mine 2, which can be actuated by a user, e.g. B. can be actuated via an actuating portion to move the mine 2 in a corresponding movement relative to the receiving element 7.

Although not shown in FIGS. 1 to 3, it is possible to provide the sheathing element 4 in the region of its exposed outer (upper) surfaces at least in sections with a coating or sheathing in order to reduce the haptic impression when the sheath element 4 touches. to manipulate a handle of the pen 1 targeted. A corresponding coating can, for. B. be formed by a lacquer which can be removed in a sharpening or molding of the pin 1. A corresponding enclosure may, for. B. be formed by a paper or pulp material, which can be removed in a sharpening or molding of the pin 1 (with).

FIG. 4 shows a schematic diagram of a sharpener 10 for sharpening or molding the pin 1 shown in FIGS. 1, 2 or 3. The sharpener 10 is shown in Fig. 4 in a perspective view.

The sharpener 10 includes a blade or blade shaped tip member 5. The sharpener 10 and tip member 5 may be integrally formed, e.g. B. of a plastic, may be formed.

The pointed element 5 is formed from a comparatively soft material, ie an uncured metal, in particular an uncured steel or stainless steel. The pointed element 5 could also be formed from a plastic, in particular polyamide, polycarbonate or polyethylene terephthalate. The possibility of sharpening or molding of the pin 1 by pointed elements 5 formed of uncured metals, in particular uncured steels or stainless steels, or plastics has a positive effect on the sharpener 10 or the associated sharpened elements 5, in particular in connection with cosmetic pencils because they do not rust and therefore do not need to be provided with anti-corrosion measures, in particular anti-corrosion varnishes. The sharpeners 10 can be cleaned in a comparatively simple manner, ie, for example by rinsing with water, without corroding.

5, 6 each show a schematic diagram of a pin 1 according to a further embodiment. The pin 1 is shown in Fig. 5 in a partially broken exploded view, from which the individual components of the pin 1 according to the further embodiment can be seen in more detail, and shown in Fig. 6 in a partially broken view of the mounting state of the pin 1.

The pin 1 comprises a receiving element 7 with a hollow cylindrical receiving portion 1 1 for receiving the sheathed with a corresponding sheath element 4 mine 2 and a receptable in the receiving portion 1 1 accommodated or recorded sheathed 2. The receiving element 7 can also be used as a housing of the pen. 1 are designated or considered, in which various other components of the pin 1, in particular the mine 2, are received or received.

As mentioned, in embodiments with corresponding receiving elements 7, the sheathing element 4 may have a lower mechanical stability, in particular a lower dimensional stability or dimensional stability and / or a lower hardness, than the mine 2. The jacket element 4 alone can take on the function of protecting the mine 2 from aging or the function of a "diffusion barrier".

The pin 1 is a cap member 13 associated. The cap member 13 is fastened or fastened to the receiving element 7 in a rotationally fixed manner in the region of a free or open end. The cap member 13 is thus not relative to the receiving part 2 and / or the receiving part 2 is not rotatable relative to the cap member 13. The cap member 13 serves to axially projecting from the receiving element 7 respectively the hollow cylindrical receiving portion 1 1 free end of the mine 2 when not in use of the pin 1, z. B. from mechanical as well as from climatic influences to protect. The cap member 13 may therefore also be referred to or considered as a protective cap.

In order to prevent unintentional removal of the cap member 13 from the receiving element 7, the receiving element 7 may be provided in the region of an axial projection 12 with at least one projection (not shown), which in the attached to the receiving element 7 state of the cap member 13 in a corresponding thereto formed on the inner periphery of the cap member 13 groove-like recess (not shown) intervenes.

The cap member 13 has a Anformeinrichtung or spreader 10 rotatably arranged therefor or arranged for molding or tips of the recorded in the receiving element 7 sheathed mine 2. The sharpener 10 may be formed integrally with a plastic tip element 5. About the integrated in the cap member 13 sharpener device 10 is a molding or sharpening of the accommodated in the receiving element 7 sheathed mine 2, d. H. of the axially projecting from the receiving element 7 free end of the mine 2, possible. The functionality of the cap member 13 is therefore on the protection of the mine 2, z. B. from mechanical as well as from climatic influences beyond.

The rotationally fixed arrangement of the sharpener device 10 in the cap member 13 is by interlocking co-operation of spitzereinneitungsseitiger positive locking elements 15 with this corresponding cap element side counter-form-locking elements 16, d. H. a positive engagement spitzereinneitungsseitiger projections in this corresponding cap element side recordings realized. The rotationally fixed arrangement of the sharpener device 10 in the cap member 13 can therefore damage or destruction free, z. B. for the purpose of replacement and / or cleaning of the sharpener device 10 and / or the cap member 13, temporarily be repealed.

The pin 1 comprises a lead advancing device 8 formed by a plurality of components in operative connection with one another. The lead advancing device 8 receives the lead 2 in the receiving element-side receiving portion 11 (in the cap member 13 fixed to the receiving member 7) in an axial advancing movement in the direction of the cap member side Spreader 10 displaceable. The lead advancing device 8 thus serves to exert a force on the refill 2 received in the receiving element-side receiving section 1 1, which results in a feed movement of the refill 2 in the direction of the cap element-side sharpener device 10. Of course, a return movement of the refill 2 opposite to a corresponding advancing movement is also possible via the lead advancing device 8.

The lead advancing device 8 is designed such that an advancing movement of the refill 2 is adapted to a removal volume of the sharpener 10 defined for a given advancing movement of the refill 2, so that the advancement volume given given the advancing movement of the refill 2 is not greater than that over the refill Spreader 10 at the given defined feed movement of the mine 2 ablatable removal volume is. The defined by the advancing movement of the mine 2 feed volume of the mine 2 per full revolution or partial rotation of the mine 2 by a certain angle, exceeds the per maximum revolution or partial rotation of the mine 2 by a certain angular extent on the sharpener 10 maximum ablatable Abtragsvolumen accordingly

As can be seen, the receiving element 7 is formed at least in sections with an internal thread. The receiving element 7 is further in the region of an end face, d. H. formed in the region of the axial projection 12, with coupling elements 17 in the form of projections for the positive formation of a rotationally fixed coupling with counter-coupling element (not shown) corresponding thereto, on the part of the cap element 13.

The lead feed device 8 comprises a hollow cylindrical guide element 18 which can be received axially in the receiving part-side receiving section 11 and has guide sections 19 in the form of longitudinal cutouts for axially guiding a cup-shaped or basket-shaped lead holding part 20 relative to the guide element 18 and a corresponding cup which can be received axially in the guide element 18. or basket-shaped lead holding element 20 for holding the mine 2. The mine 2 is rotatably mounted in the lead holding element 20, which by the interaction of minenseitiger positive-locking elements 22, z. B. in the form of protrusions, with minenhalteelementseitigen counter-form-locking elements 23, z. B. in the form of groove-like recordings, is realized. The lead-holding element 20 has counter-guide sections 21 in the form of projections which correspond to the guide-part-side guide sections 19 and via which the lead-holding element 20 can be axially movably guided on or in the guide element 18.

In the region of the end of the guide element 18 facing away from the cap element 13, a handling element 14 forming a bottom section of the pin 1 is arranged or formed. The handling element 14 is here formed in one piece with the guide element 18 and thus non-rotatably connected to the guide element 18.

The operating principle of the lead-advancing device 8 provides that the refill 2 received in the lead-holding element 20 can be displaced via the lead-advancing device 8 into an axial advancing movement in the direction of the cap-element-side sharpener 10. This takes place in such a way that the guide element 18 or the handling element 14 connected to it in a rotationally fixed manner is set into a rotational movement relative to the receiving part 2 (cf., Fig. 6, arrow P1). In order to set the guide element 18 in a rotational movement, a user of the pin 1 engages the guide element 18 or the handling element 14 rotatably connected thereto and rotates it relative to the receiving element 7 and the cap element 13 rotatably connected thereto. The axis of rotation corresponds to the axis of symmetry of the pin 1 and the axis of symmetry of the hollow cylindrical components of the pin first

By rotation of the guide member 18, the lead holding member 20 is caused by the rotationally fixed connection with the guide member 18 in a rectified rotational movement. The lead holding element 20 is now due to the engagement of the formed on the receiving element 7 internal thread with a to the minenhalteteilseitigen Counter-guide portions 21 formed external thread in an axial movement, ie, depending on the direction of rotation of the guide member 18 and handling element 14 in a feed movement (see Fig. 6, arrow P2) in the direction of the cap member-side sharpener 10 or in a reverse thrust in a direction opposite thereto, displaceable or offset.

As can be seen from FIG. 6, the operating principle of the lead-advancing device 8 additionally includes that the cap element 13 (together with the sharpener 10 arranged rotatably therein) together with the receiving element 7 non-rotatably connected to the cap element 13 relative to the guide element 18 or the handling element 14 can be rotated (see Fig. 6, arrow P3). For this purpose, the guide element 18 or the handling element 14 and the cap element 13 together with the cap member 13 connected receiving element 7 are rotatable in opposite directions of rotation (see Fig. 6, arrows P1, P3). The respective axis of rotation again corresponds to the axis of symmetry of the pin 1 or the axis of symmetry of the hollow cylindrical components of the pin 1.

For the embodiment shown in FIGS. 5, 6, the inner thread formed there on the receiving element 7 can, viewed axially, in principle also be formed on other axial regions of the receiving element 7.

For the embodiment shown in FIGS. 5, 6 further applies that the receiving element-side internal thread already by a part of an internal thread, ie at least one internal thread flank or a female thread portion, may be formed. The internal thread can, for. B. by at least one (with respect to the symmetry or central axis of the receiving element 7) radially inwardly directed, in particular nose-like projection may be formed. The same applies to the mineral retaining element-side external thread, ie, this too can already be formed by a part of an external thread, ie at least one external thread flank or an external thread segment.

REFERENCE LIST

pen

mine

Mine body

casing member

Spitzer element

mine tip

receiving element

Mine feeder

actuator

Tip device

receiving portion

approach

handling element

cap member

Form-fitting element

Against interlocking element

coupling element

guide element

guide section

Mine retaining element

Against guide section

Form-fitting element

Against interlocking element

Claims

KH / 20160260WO 2017/076960 - 25 - PCT / EP2016 / 076533 PAT EN TAN SPRU CHE

1 . A pencil (1), comprising a mine (2) and a sheathing element (4) sheathing it at least in sections, characterized in that the sheathing element (4) is formed at least in sections, in particular completely, from a wax-like material.

2. Pin according to claim 1, characterized in that the sheathing element (4) by a made of a plastic or a non-hardened metal, in particular a non-hardened steel, formed, in particular blade or blade-shaped, pointed element (5) of a sharpener device (10). can be tipped or tipped off.

3. Pen according to claim 1 or 2, characterized in that the waxy material is formed exclusively of at least one waxy component or the waxy material is formed from at least one waxy component and at least one non-waxy component.

4. A pencil according to claim 3, characterized in that the waxy constituent of at least one natural, in particular plant and / or animal and / or geological, wax and / or at least one synthetic wax is formed.

5. Pen according to claim 4, characterized in that the waxy component is formed from a natural wax, wherein the natural wax is formed from natural hydrocarbon compounds or contains natural hydrocarbon compounds.

A pencil according to claim 5, characterized in that the natural wax is formed from at least one natural wax of the following group or contains at least one natural wax of the following group: beeswax, candelilla wax, carnauba wax, china wax, japan wax, spermaceti, wool wax, sugarcane wax, Montan wax, earth wax.

7. Pen according to claim 4, characterized in that the waxy component is formed from at least one synthetic wax, wherein the synthetic wax is formed from synthetic hydrocarbon compounds or synthetic KH / 20160260

WO 2017/076960 - 26 - PCT / EP2016 / 076533

Contains hydrocarbon compounds.

8. A pencil according to claim 7, characterized in that the synthetic wax from at least one aliphatic wax, in particular based on paraffin, polyethylene or polypropylene, is formed or at least one aliphatic wax, in particular based on paraffin, polyethylene or polypropylene containing.

9. A pen according to claim 3, characterized in that the waxy constituent of at least one ester compound, in particular at least one fatty acid ester compound, or at least one salt of a fatty acid ester compound is formed.

10. A pencil according to any one of claims 3 to 9, characterized in that the non-waxy constituent of a, in particular polyolefinic, thermoplastic plastic is formed.

1 1. Pin according to one of the preceding claims, characterized in that the sheath element (4) has a higher mechanical stability, in particular a higher dimensional stability or dimensional stability and / or a higher hardness, than the mine (2).

12. A pencil according to one of the preceding claims, characterized in that the refill (2) is formed from or comprises at least one waxy material, the waxy material of the refill (2) and the waxy material of the sheath element (4) being in differ in their chemical properties and / or in their structural, in particular mechanical, properties.

13. A pen according to claim 12, characterized in that the mine (2) and the sheath element (4), in particular in one piece, are formed from the same waxy material, wherein the sheath element (4) due to at least one carried out in the region of its surface measure for Increasing the mechanical stability, in particular the dimensional stability or dimensional stability and / or hardness, in particular a treatment with high-energy radiation, a higher mechanical stability, in particular a higher dimensional stability or dimensional stability and / or a higher hardness than the mine (2) , ΚΗ / 20160260

WO 2017/076960 - 27 - PCT / EP2016 / 076533

14. A pencil according to any one of the preceding claims, characterized in that the sheath element (4) forms a diffusion barrier against volatile constituents of the mine (2) contained in the mine (2).

15. A pencil according to any one of the preceding claims, characterized in that the sheath element (4) is saturated or supersaturated with volatile constituents of the mine (2) or these chemically similar volatile constituents.

16. Pen according to one of the preceding claims, characterized in that the mine (2) has an elongated geometric shape, wherein the sheath element (4) the mine (2) either only in the region of its longitudinal side at least partially sheathed or the sheath element (4). the mine (2) in the region of its longitudinal side at least partially encased and in the region of at least one free end, optionally both free ends, the mine (2) sheathed.

17. Pin according to one of the preceding claims, characterized by a receiving element (7) for receiving the refill (2), wherein the refill (2) is received at least in sections in the receiving element (7).

18. A pen according to claim 17, characterized by a lead advancing device (8) which is adapted to put in the receiving element (7) received mine (2) in a movement relative to the receiving element (7).

19. Mine (2) for a pin (1), in particular for a pin (1) according to one of the preceding claims, wherein the lead (2) is sheathed at least in sections with a sheath element (4), characterized in that the sheath element ( 4) is formed at least in sections, in particular completely, from a waxy material.