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Pencil for writing, drawing, painting and/or cosmetics purposes and method of producing the same

A pencil and painting technology, applied to writing utensils, packaged cosmetics, non-active pencils, etc., can solve problems such as problems such as reduced pencil usability, broken refills, etc.

Active Publication Date: 2009-09-02
STAEDTLER MARS GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The disadvantage of this type of pencil is that the casing or lead jacket does not show the typical wood properties when sharpening, and the lead is significantly less flexible than the casing, which leads to a tendency for the lead to break quickly when the pencil is bent, which Makes the pencil less usable or even problematic for the user

Method used

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  • Pencil for writing, drawing, painting and/or cosmetics purposes and method of producing the same
  • Pencil for writing, drawing, painting and/or cosmetics purposes and method of producing the same
  • Pencil for writing, drawing, painting and/or cosmetics purposes and method of producing the same

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Embodiment Construction

[0023] figure 1 Shown is a cross-section of a pencil 1 constructed according to the invention, consisting of at least 3 elements. It is a concentric system in which a cartridge 11 of diameter m is arranged in the center, which is surrounded by a jacket 12 of wall thickness u, for example a layer of wood substitute 12 . A support sleeve 13 with a wall thickness t is formed or arranged around the system of cartridge 11 and casing 12 .

[0024] figure 2 shown based on figure 1 The longitudinal section of the pencil 1 of the present invention. In this illustration, the lead holder surrounding the lead 11 , which is formed by the jacket 12 and the support sleeve 13 , can be seen clearly.

[0025] The stress caused by the bending load or the applied bending force B is as image 3 shown. The bending force B produces a compressive stress D on one half of the pencil and a tensile stress Z on the other half. In the compression region there is a relatively harmless compressive st...

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PUM

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Abstract

The invention relates to a pencil 1 for writing, drawing, painting and / or cosmetics purposes, comprising a coloured core 11 and a core holder enclosing the core 1, wherein the core holder comprises a wood-replacement material 12 which encloses the core 1, wherein the core 1 and core holder are retained such that they cannot be displaced in relation to one another, wherein the core holder has a carrying sleeve 13 which encloses the wood-replacement material 12, and wherein the modulus of elasticity of the carrying sleeve 13 is equal to, or higher than, that of the wood-replacement material and the bending strength of the carrying sleeve is higher than that of the wood-replacement material.

Description

technical field [0001] The present invention relates to writing, drawing, drawing and / or makeup pencils and methods for their manufacture. Background technique [0002] Writing, drawing, drawing and / or cosmetic pencils are known in principle, in which a lead suitable for writing is surrounded by a material providing strength. In this case, the cartridge is held in the casing in an irreplaceable manner. [0003] These refills are known to be glued into small slotted wooden boards, the wood surface being covered with a decorative paint if desired. A disadvantage of such pencils is that the lead is surrounded by precious wood, resulting in the depletion of natural wood resources. Furthermore, it is a disadvantage that complex and expensive manufacturing methods are required to produce such good quality pencils. [0004] Coextruded and ternally extruded pencils are also known, in which the lead material is surrounded by a casing, the lead and the casing usually being polymer-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/06B43K19/02B43K19/14A45D40/20B29C48/06B29C48/30
CPCB29C47/0016B43K19/16A45D40/20B43K19/02B43K19/14B29C47/128C09D17/00B43K19/04B43K19/10C09D101/00B29C48/06B29C48/304
Inventor A·蒂斯
Owner STAEDTLER MARS GMBH & CO KG
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