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Pencil lead for writing, drawing and painting instruments

一种绘图工具、书写工具的技术，应用在书写器具、铅笔芯、家里用具等方向，能够解决高消耗、降低挤压效率、昂贵制造方法等问题，达到降低生产成本、成本节约的效果

Inactive Publication Date: 2011-04-06
STAEDTLER MARS GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, the disadvantage is the expensive manufacturing method
An example of this is the very high shear energy that occurs in the extruder due to the flake-like additions in this method, which greatly reduces the extrusion efficiency
[0007] Furthermore, a significant disadvantage is that the strength increase achieved in this way is not high enough to justify the production costs
The lead material used or inserted is the same over the entire lead cross-section, which leads to a high consumption of valuable lead material which is necessary only in the writing area or tip area

Method used

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  • Pencil lead for writing, drawing and painting instruments
  • Pencil lead for writing, drawing and painting instruments
  • Pencil lead for writing, drawing and painting instruments

Examples

Experimental program
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Embodiment Construction

[0040] FIG. 1 shows a clad refill 1 with a refill cladding 2 in longitudinal section, wherein in this embodiment the refill cladding 2 is formed concentrically around the longitudinal axis of a refill core 3 .

[0041] FIG. 2 shows the lead or clad lead 1 according to FIG. 1 in cross section. The concentric structure of the cartridge 1 is clearly visible in this view. In this embodiment, the lead core 3 is surrounded by a lead coating 2 .

[0042] Fig. 3 shows a clad refill 1 made up of a refill core 3 and a refill cladding 2, which has a shell 4 made of two small wood pieces 41, wherein the clad refill 1 is bonded to these In the groove of the small wood piece 41, this is known, for example, from typical pencils or colored pencils. The pencil accommodated in wood has a hexagonal outer contour in this embodiment.

[0043] Figure 4 Another embodiment of a coated lead 1' according to the invention is shown. The lead core 3 is surrounded in this embodiment by two lead wraps ...

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PUM

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Abstract

The present invention provides a lead for writing, drawing and painting utensils has a colorant lead core and at least one lead coat extending in the direction of the longitudinal axis. The at least one lead coat envelopes the lead core as seen in cross section of the lead and the lead coat and lead core are immovably mounted relative to each other. The at least one lead coat has a higher bendingstrength than the lead core.

Description

technical field [0001] The invention relates to a refill for writing implements, drawing implements and painting implements, which has a core core releasing color and at least one refill coating in the direction of the longitudinal axis, wherein, in the cross-section of the refill Viewed in a central view, the at least one lead sheath surrounds the lead core and the lead sheath and lead core are fixed immovably to one another. Background technique [0002] Pen refills for writing, drawing or drawing instruments are basically known. [0003] Known writing or drawing refills are generally designed as one-piece refills or chalks and are fixed or movably fixed in a housing. [0004] The prior art is a one-piece, uniformly constructed refill, which is a compromise based on the desired writing properties, which are mainly adjustable via the hardness of the refill and reflect the requirements for this use. Necessary refill strength. If the minimum lead strength is undershot, it ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B43K19/02
CPCB43K19/16C09D13/00B43K19/02B43K19/18Y10T428/2933
Inventor 安德烈亚斯·蒂斯赫丽斯塔·莱雷尔于尔根·赖纳克里斯蒂娜·德拉皮埃尔罗伯特·奈因弗朗茨·奥克斯屈恩马克斯·海因德尔
Owner STAEDTLER MARS GMBH & CO KG