Component for writing, drawing, painting and/or cosmetic implements and method for the production thereof

Abstract

The invention relates to a component for writing, drawing, painting and/or cosmetic implements for receiving at least one application medium, the component comprising at least one sleeve, which is made of a polymer-bonded wood substitute substance and which has an inner sleeve wall and an outer sleeve wall, the component further having at least one migration blocking layer, the at least one migration blocking layer directly or indirectly covering the inner sleeve wall of the at least one sleeve.

Claims

1. A component for a fibre pen filled with ink and/or ballpoint pen implements filled with paste or gel, wherein the component comprises: at least one sleeve made of at least one polymer-bonded wood substitute substance containing an organic filler material, the sleeve having an inner sleeve wall and an outer sleeve wall; and at least one migration blocking layer, wherein the at least one migration blocking layer directly or indirectly covers the inner sleeve wall of the at least one sleeve so as to block migration of the ink, paste or gel into the at least one sleeve, wherein the wood substitute substance comprises, TABLE-US-00004 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 adhesion promoter, 1-30% by weight at least one wax, 0-10% by weight at least one colour pigment, and 0-10% by weight at least one additive.

2. The component according to claim 1, wherein the at least one migration blocking layer indirectly covers the inner sleeve wall of the at least one sleeve, the component further comprising at least one adhesion promoter layer that directly covers the inner sleeve wall and is arranged between the at least one sleeve and the at least one migration blocking layer.

3. The component according to claim 2, wherein the at least one adhesion promoter layer is one of a copolymer, a block polymer, a graft polymer or a polymer mixture formed of at least one polymer.

4. The component according to claim 2, wherein the at least one migration blocking layer is a polyolefin or a styrene polymer, wherein the at least one adhesion promoter layer has a layer thickness in a range from 0.01 to 1 mm.

5. viously presented) The component according to claim 1, wherein the at least one migration blocking layer is a polyolefin or a styrene polymer.

6. The component according to claim 5, wherein the polyolefin is polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET) or polyvinyl chloride (PVC).

7. The component according to claim 5, wherein the styrene polymer is polystyrene (PS), styrene acrylonitrile (SAN) or acrylonitrile butadiene styrene (ABS).

8. The component according to claim 1, wherein the component has a round, oval, ellipsoidal, polygonal and/or star-shaped outer contour.

9. The component according to claim 1, wherein the at least one sleeve has a wall thickness in a range from 0.5 to 5 mm.

10. The component according to claim 1, wherein the at least one migration blocking layer has a layer thickness of less than 2 mm.

11. The component according to claim 1, wherein the outer sleeve wall is covered at least partially by a decorative layer.

12. The component according to claim 11, wherein the outer sleeve wall covered at least partially by a decorative layer has a three-dimensional structure at least in part.

13. The component according to claim 11, wherein the at least one decorative layer is formed from polymers or polymer compounds and/or paints and/or films.

14. The component according to claim 1, wherein the outer sleeve wall has a three-dimensional structure at least in part.

15. The component according to claim 1, wherein the at least one sleeve is formed from at least two different wood substitute substances, which differ in terms of coloration and/or mechanical properties.

16. A writing, drawing, painting and/or cosmetic implement comprising: at least one application medium; and a component according to claim 1, wherein the at least one application medium is present at ambient temperature in liquid or solid aggregate state and at least partially fills a cavity surrounded by the at least one migration blocking layer.

Description

BRIEF DESCRIPTION OF THE DRAWING

(1) FIG. 1: plan view of the tip of a cosmetic implement;

(2) FIG. 2: plan view of the tip of a colouring implement;

(3) FIG. 3: Ballpoint writing implement in side view with shaft illustrated in section

DETAILED DESCRIPTION OF THE INVENTION

(4) The implement according to FIG. 1 shows a cosmetic implement in the form of an eyeliner, consisting of a sleeve 11, an application medium 12, a migration blocking layer 13, an adhesion promoter layer 14 and a decorative layer 15. The application medium 12 in the form of a soft lead is composed for example as described in U.S. Pat. No. 5,039,519 , Example 1. As a result of the migration blocking layer 13 it is possible to prevent pigments, for example yellow iron oxide from migrating into the wood substitute/sleeve 11. In order to prevent a migration of these constituents in the sleeve/wood substitute 11 direction, a migration blocking layer 13 is arranged between the application medium 12 and wood substitute 11.

(5) An adhesion promoter layer 14 is additionally arranged between the inner sleeve wall 111 of the sleeve 11 and the migration blocking layer 13, since the polystyrene (PS) of the migration blocking layer 13 is incompatible with the polyolefin (PE-HD) of the wood substitute/sleeve 11. The migration blocking layer 13 covers the inner sleeve wall 111 of the sleeve 11 only indirectly.

(6) The adhesion promoter 14 is in this case a styrene butadiene copolymer (SB). A fixed coupling between the incompatible polymers is ensured by the adhesion promoter or the adhesion promoter layer.

(7) The decorative layer 15, which is applied to the outer sleeve wall 112, is present in this embodiment as a coloured WPC.

(8) Example formulation for the wood substitute according to FIG. 1/embodiment 1:

(9) TABLE-US-00001 polyolefin (PE-HD) 20.0% by weight wood powder 70.0% by weight polypropylene with grafted 1.0% by weight maleic acid anhydride amide wax 3.0% by weight stearic acid 1.0% by weight boron nitride 5.0% by weight

(10) What is not illustrated is a variant in which the sleeve (11) is formed from at least two different wood substitute substances that differ in terms of their colouration and/or mechanical properties.

(11) FIG. 2 shows an implement 1 in the form of a wood-cased colouring implement, which contains a solid lead as application medium 12. The lead 12 is surrounded by a migration blocking layer 13 and a sleeve 11. The migration blocking layer 13 and also the wood substitute substance/sleeve 11 have a polyolefin (PE) as polymeric binder, which means that in this embodiment no adhesion promoter layer (14) has to be formed, since the problem of incompatible polymers is eradicated. A fixed coupling/connection between migration blocking layer 13 and sleeve 11 is thus ensured even without an adhesion promoter layer.

(12) The migration blocking layer 13 covers the inner sleeve wall 111 directly in this embodiment.

(13) An example formulation for the wood substitute according to FIG. 2/embodiment 2 may be composed as follows, by way of example:

(14) TABLE-US-00002 high density polyethylene (PE-HD) 25.0% by weight wood powder 65.0% by weight polyethylene with grafted 2.0% by weight maleic acid anhydride amide wax 3.0% by weight stearic acid 3.0% by weight titanium dioxide 2.0% by weight

(15) The wood substitute specified in the exemplary embodiments /FIGS. 1 and 2 can assume various forms. By way of example, reference is made to forms according to EP 2 313 462 B1.

(16) A wood substitute substance that is composed in accordance with the following framework formulation has proven to be particularly advantageous.

(17) TABLE-US-00003 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 adhesion promoter 1-30% by weight at least one wax 0-10% by weight at least one colour pigment, and 0-10% by weight at least one additive

(18) In addition, it has proven to be advantageous when the binder is selected from the group of polyolefins.

(19) It has been found surprisingly that the sharpenability of implements according to FIGS. 1 and 2 is not, or is hardly altered/impaired, since the blocking layer does not have to be shaped and/or formed thick.

(20) A further exemplary embodiment is shown and described in greater detail in FIG. 3.

(21) FIG. 3 shows am implement 1 in the form of a ballpoint writing implement, which has a component according to the invention in the form of a shaft, which is composed of a sleeve 11 and a migration blocking layer 13. The shaft is closed at one end by a tip unit 17 and at the other end by a closure stopper 16.

(22) The receiving space thus formed surrounds the application medium 12 tightly, also tightly against migrating constituents of the application medium 12.

(23) At the tip end the application medium 12 is present in the form of a ballpoint ink paste, wherein a backflow of the paste is prevented by the follower 18.

(24) Ballpoint ink pastes contain substances that are capable of migration and that would infiltrate or migrate into the wood substitute/sleeve 11 without forming a migration blocking layer 13.

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

(26) A method for producing components of this type can be carried out as described hereinafter. In particular the method of co-extrusion delivers excellent results for this purpose. The different constituents of the component, consisting of migration blocking layer, wood substitute substance and optionally adhesion promoter are each melted separately from one another in an extruder; The viscous melts are then fed to a common tool; In the tool the individual constituents are geometrically pre-shaped, combined and discharged together; After leaving the tool the endless strand/hollow profile thus extruded is cooled and solidified in the desired geometry; The endless strand is separated at the end of the cooling, the parts produced hereby correspond to the components according to the invention; These components can be fed, where appropriate, to subsequent units, such as decoration and/or assembly units.

(27) The components are used in writing, drawing, painting and/or cosmetic implements. With implements of this type the at least one application medium is present at ambient temperature in liquid, pasty or solid aggregate state, wherein the application medium at least partially fills the cavity surrounded by the at least one migration blocking layer.

(28) The component according to the invention can be used in wood-cased implements with leads, such as lead pencils and colouring implements, fibre pens filled with ink, and/or ballpoint implements filled with paste or gel.

(29) In the cosmetics field, the component can be used in what are known as eyeliners, eyebrow pencils and/or lip liners.

(30) The outer contour of the component can be round, oval, ellipsoidal, polygonal and/or star-shaped in all applications or uses. Here, a large number of forms of the outer contour are possible on account of the extrusion method.

POSITION LIST

(31) 1 writing, drawing, painting and/or cosmetic implement 11 sleeve 111 inner sleeve wall 112 outer sleeve wall 12 application medium 13 migration blocking layer 14 adhesion promoter layer 15 decorative layer 16 closure stopper 17 tip unit 18 follower 19 three-dimensional structure/structures