DE202013000836U1 - Component for writing, drawing, painting and / or cosmetic pencils - Google Patents

Abstract

Component for pens, crayons, crayons and / or cosmetic pens for receiving at least one application medium, the component comprising at least one sleeve made of at least one polymer-bonded wood substitute material, which has an inner sleeve wall and an outer sleeve wall, characterized in that the component further comprises at least has a migration barrier layer, the at least one migration barrier layer indirectly or directly covering the sleeve inner wall of the at least one sleeve.

Description

The invention relates to a component for writing, drawing, painting and / or cosmetic pencils, according to the preamble of the main claim.

Components are understood below to mean shafts, cartridges, casings for mines, end caps and / or savers. Such pin components are known in principle.

The function of these components is that they absorb or enclose liquid, pasty and / or solid application media.

For example, wooden pegs in which a mine is enveloped or encased in natural wood have long been known.

In order materials such as mines and the like migrating components such as pigments, plasticizers, oils and / or waxes are included, whose migration capacity depends among other things on temperature and concentration. By migration is meant an undesired movement of constituents in a substance. Mining components migrate into adjacent layers.

Furthermore, it is to be regarded as disadvantageous that in recent years due to the lack of availability of wood, the price of high-quality woods has increased enormously, which has a direct effect on the cost of production of the pins.

As an alternative to the wood-tipped pens described at the outset, pens are known from the prior art, the wrapper of which comprises sharpenable foamed or unfoamed polymer extrudates of polystyrene (PS), polyvinyl chloride (PVC), polypropylene (PP) and polyethylene (PE).

Since such pin sheaths are made of nearly 100% polymer, such pins are environmentally unacceptable.

This ecological point of view also applies to shafts of ballpoint pens, ink writing instruments and / or ink cartridges.

Next are from the DE 10 2008 034 0150 A1 Pens with lead shells from so-called wood-plastic composites (WPC) known.

However, it has proved to be disadvantageous that occur in porous and / or infiltratable mine casings by the migration of mine components irreversible damage such. B. discoloration, strength decreases and contamination of the surface. In addition, the migrating medium will also be deprived of constituents which may be necessary for its intended use, thereby damaging or even making impossible the general use of the product.

The object of the invention is therefore to provide a component for writing, drawing, painting and / or cosmetic pencils, which ensures that pens which contain the component for a long time and at elevated temperature show no reduction in quality, regardless of whether the migrating constituents containing application medium is liquid, pasty or solid.

This object is achieved with the features of claim 1. Advantageous embodiments are set forth in the subclaims.

The component constructed according to the invention for writing, drawing, painting and / or cosmetic pencils for receiving at least one application medium has at least one sleeve of at least one polymer-bonded wood substitute material (WPC), the sleeve having a sleeve inner wall and a sleeve outer wall. Furthermore, the component constructed according to the invention has at least one migration barrier layer, the at least one migration barrier layer covering the sleeve inner wall of the at least one sleeve indirectly or directly.

If the at least one migration barrier layer indirectly covers the sleeve wall, the component according to the invention furthermore has at least one adhesion promoter layer which directly covers the sleeve inner wall and is arranged between the sleeve and the at least one migration barrier layer.

At least one adhesion promoter layer is formed when the polymers of the at least one wood substitute material of the at least one sleeve and the polymers of the at least one migration barrier layer are incompatible.

In this case, the adhesion promoter is coupled, on the one hand, to the at least one polymer of the at least one wood substitute and, on the other hand, to the at least one polymer in the migration barrier layer. A firm and permanent connection between the at least one migration barrier layer and the at least one wood substitute material is thereby produced.

The at least one migration barrier layer may for example consist of a polyolefin, in particular polyethylene (PE) and / or polypropylene (PP) or polyethylene terephthalate (PET) or polyvinyl chloride (PVC) or styrene polymers such as polystyrene (PS), styrene-acrylonitrile (SAN) and acrylonitrile-butadiene Styrene (ABS) may be formed.

The migration barrier layer is matched to the polarity of the recording medium to be recorded.

The at least one migration barrier layer has a layer thickness of less than 2 mm.

The at least one primer layer may consist of a copolymer, a block polymer, a graft polymer or a polymer blend of one or more polymers.

The layer thickness of the adhesion promoter layer is in the range of 0.01 mm to 1 mm.

The sleeve outer wall may be at least partially covered with at least one decorative layer which is formed from polymers or polymer compounds and / or paints and / or films.

Furthermore, the sleeve outer wall can have at least partially or in partial areas a three-dimensional structure or three-dimensional structures. The structure or structures can be arranged directly on the sleeve outer wall and / or on the decorative outer layer covering the decorative layer.

Below is the component of the invention based on the 1 to 3 be shown and explained in detail.

1 : Top view of the tip of a cosmetic pencil;

2 : Top view of the tip of a crayon;

3 : Ballpoint pen in side view with shaft shown in section;

The pencil after 1 shows a cosmetic pencil in the form of an eyeliner, consisting of a sleeve 11 , a job medium 12 , a migration barrier layer 13 , a primer layer 14 and a decorative layer 15 ,

The order medium 12 in the form of a soft lead, for example, as in US 5,039,519 , Example 1 described together. Through the migration barrier layer 13 can prevent pigments, for example, the "yellow iron oxide" in the wood substitute / sleeve 11 migrate. To migrate these components towards sleeve / wood replacement 11 to prevent is between order medium 12 and wood substitute 11 a migration barrier layer 13 arranged.

Between the sleeve inner wall 111 the sleeve 11 and the migration barrier layer 13 is also a primer layer 14 arranged since the polystyrene (PS) of the migration barrier layer 13 incompatible with the polyolefin (PE-HD) of the wood substitute / sleeve 11 is. The migration barrier layer 13 cover the sleeve inner wall 111 the sleeve 11 only indirectly.

The bonding agent 14 in this case is a styrene-budatia copolymer (SB). The adhesion promoter or the adhesion promoter layer ensures a firm coupling between the incompatible polymers.

The decorative layer 15 which are on the sleeve outer wall 112 is applied, is present in this embodiment as a colored WPC.

Example recipe for the wood substitute according to 1 / Version 1: Polyolefin (PE-HD) 20.0% by weight wood flour 70.0% by weight Polypropylene with grafted maleic anhydride 1.0% by weight amide 3.0% by weight stearic acid 1.0% by weight boron nitride 5.0% by weight

Not shown is a variant in which the sleeve ( 11 ) is formed of at least two different wood substitute materials, which differ in terms of their color and / or mechanical properties.

In 2 becomes a pen 1 shown in the form of a wood-colored pencil, which is a solid mine as a coating medium 12 includes. The mine 12 is from a migration barrier layer 13 and a sleeve 11 enclosed. The migration barrier layer 13 as well as the wood substitute material / sleeve 11 have as polymeric binder to a polyolefin (PE), which has the consequence that in this embodiment no adhesive layer ( 14 ), since the problem of incompatible polymers is eliminated. Thus even without a primer layer is a fixed coupling / connection between migration barrier layer 13 and sleeve 11 guaranteed.

The migration barrier layer 13 covered in this embodiment, the sleeve inner wall 111 immediate.

An example recipe for the wood substitute according to 2 / Execution 2 can be composed as an example as listed below: Polyethylene High Density (PE-HD) 25.0% by weight wood flour 65.0% by weight Polyethylene with grafted maleic anhydride 2.0% by weight amide 3.0% by weight stearic acid 3.0% by weight Titanium dioxide 2.0% by weight

The in the embodiments / 1 and 2 cited wood substitute can take different forms. By way of example, it should be noted in terms of the EP 2 313 426 B1 directed.

Particularly advantageous is a wood substitute material has been found, which is composed according to the following frame recipe: 15-30% by weight at least one polymeric binder, 50-80% by weight at least one organic filler, 0-20% by weight at least one inorganic filler, 0.5-5% by weight at least one bonding agent, 1-30% by weight at least one wax, 0-10% by weight at least one color pigment, and 0-10% by weight at least one additive, In addition, it has proven to be advantageous if the binder is selected from the group of polyolefins.

It has surprisingly been found that the sharpenability of pins after the 1 and 2 not or hardly changed / deteriorated because the barrier layer does not have to be made thick and / or executed.

Another embodiment is in 3 shown and described in detail. 3 shows a pen 1 in the form of a ballpoint pen having a component according to the invention in the form of a shaft, which consists of a sleeve 11 and a migration barrier layer 13 is composed. The shaft is at one end by a point unit 17 and at the other end by a stopper 16 locked.

The receiving space thus formed encloses the application medium 12 dense, dense against migrating components of the application medium 12 ,

At the top is the application medium 12 in the form of a ballpoint pen paste, with a backflow of the paste through the trailer 18 is prevented. Ballpoint pen pastes contain migratory substances that do not form a migration barrier layer 13 in the wood substitute / sleeve 11 would invade or migrate.

In this embodiment are on the sleeve outer wall 112 three-dimensional structures 19 arranged.

• – Die unterschiedlichen Bestandteile der Komponente, bestehend aus Migrationssperrschicht, Holzersatzwerkstoff und ggf. Haftvermittler werden jeweils getrennt voneinander in einem Extruder aufgeschmolzen;
• – Danach werden die viskosen Schmelzen einem gemeinsamen Werkzeug zugeführt;
• – Im Werkzeug werden die einzelnen Bestandteile geometrisch vorgeformt, zusammengeführt und gemeinsam ausgestoßen;
• – Nach Verlassen des Werkzeuges wird der so extrudierte Endlosstrang/Hohlprofil abgekühlt und erstarrt in der gewünschten Geometrie;
• – Der endlose Strang wird am Ende der Kühlung getrennt, die damit hergestellten Teilstücke entsprechen den erfindungsgemäßen Komponenten;
• – Diese Komponenten können ggf. zu Nachfolgeeinheiten, wie beispielsweise Dekorations- und/oder Montageeinheiten zugeführt werden;

A method for producing such components may be as described below. In particular, the process of coextrusion provides excellent results.

• - The different components of the component, consisting of migration barrier layer, wood substitute material and optionally adhesion promoter are each melted separately in an extruder;
• - Then the viscous melts are fed to a common tool;
• - In the tool, the individual components are geometrically preformed, brought together and ejected together;
• - After leaving the tool, the extruded continuous strand / hollow profile is cooled and solidified in the desired geometry;
• - The endless strand is separated at the end of the cooling, the sections produced therewith correspond to the components according to the invention;
• - These components can optionally be supplied to successor units, such as decoration and / or assembly units;

The components are used in writing, drawing, coloring and / or cosmetic pencils. In the case of such pins, the at least one application medium is in liquid, pasty or solid state at ambient temperature, the application medium at least partially filling the cavity surrounding the at least one migration barrier layer.

The component of the invention can be used in wood-filled pens with leads, such as lead and color pencils, ink-filled patties, and / or pens or gel-filled pens.

In the field of cosmetics, the component can be used in so-called eyeliners, eyebrow pencils and / or lip contour pins.

The outer contour of the component can be round, oval, elliptical, polygonal and / or star-shaped in all applications or uses. Here are due to the process of extrusion various forms of the outer contour possible.

LIST OF REFERENCE NUMBERS

1

Writing, drawing, painting and / or cosmetic pencil

11

shell

111

Hülseninnenwandung

112

Hülsenaußenwandung

12

application medium

13

Migration barrier

14

Bonding layer

15

decorative layer

16

End plug

17

tip unit

18

Trailing

19

three-dimensional structure / structures

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 1020080340150 A1 [0010]
• US 5039519 [0030]
• EP 2313426 B1 [0039]

Claims (13)

Component for writing, drawing, painting and / or cosmetic pencils for receiving at least one application medium, wherein the component comprises at least one sleeve of at least one polymer-bound wood substitute material having a sleeve inner wall and a sleeve outer wall, characterized in that the component further at least a migration barrier layer, wherein the at least one migration barrier layer directly or indirectly covers the sleeve inner wall of the at least one sleeve. Component according to claim 1, characterized in that the at least one migration barrier layer indirectly covers the sleeve inner wall of the at least one sleeve, wherein the component further comprises at least one adhesive layer directly covering the sleeve inner wall and disposed between the at least one sleeve and the at least one migration barrier layer. Component according to claim 1 or claim 2, characterized in that the at least one migration barrier layer of a polyolefin, in particular polyethylene (PE) and / or polypropylene (PP) or polyethylene terephthalate (PET) or polyvinyl chloride (PVC) or styrene polymers such as polystyrene (PS), Styrene-acrylonitrile (SAN) and acrylonitrile-butadiene-styrene (ABS) is formed. Component according to claim 1 or claim 2, characterized in that the at least one adhesion promoter layer is formed from a copolymer, a block polymer, a graft polymer or a polymer mixture of one or more polymers. Component according to one of claims 1 to 4, characterized in that the wood substitute material 15-30% by weight at least one polymeric binder, 50-80% by weight at least one organic filler, 0-20% by weight at least one inorganic filler, 0.5-5% by weight at least one bonding agent, 1-30% by weight at least one wax, 0-10% by weight at least one color pigment, and 0-10% by weight at least one additive Having. Component according to one of claims 1 to 5, characterized in that the component has a round, oval, elliptical, polygonal and / or star-shaped outer contour. Component according to one of claims 1 to 6, characterized in that the sleeve has a wall thickness in the range of 0.5 to 5 mm. Component according to one of claims 1 to 3, characterized in that the at least one migration barrier layer has a layer thickness of less than 2 mm. Component according to one of claims 1 or 2 in combination with one of claims 3 to 8, characterized in that the at least one adhesion promoter layer has a layer thickness in the range of 0.01 to 1 mm. Component according to one of claims 1 to 9, characterized in that the sleeve outer wall is at least partially covered with a decorative layer. Component according to one of claims 1 to 10, characterized in that the sleeve outer wall or at least partially covered with a decorative layer sleeve outer wall at least partially has a three-dimensional structure / structures. Component according to claim 10 or claim 11, characterized in that the at least one decorative layer of polymers or polymer compounds and / or paints and / or films is formed. Component according to one of claims 1 to 12, characterized in that the sleeve is formed from at least two different wood substitute materials, which differ in terms of their color and / or mechanical properties.

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