Pen having an integrally injection-moulded coating sleeve

A covering and injection molding technology, applied in packaging, household utensils, household packaging, etc., can solve the problem that engineering wax will not migrate undesirably

Active Publication Date: 2019-06-07
A W FABER CASTELL COSMETICS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this extrusion method is that generally only refill materials that "result in relatively hard refills" can be used
However, this solution is disadvantageous especially in the field of cosmetics, since there is no guarantee that the engineering waxes added to the plastic will not themselves migrate undesirably into the refill, since the refill should only give the cosmetically permitted substances of no concern in the prescribed amount

Method used

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  • Pen having an integrally injection-moulded coating sleeve
  • Pen having an integrally injection-moulded coating sleeve
  • Pen having an integrally injection-moulded coating sleeve

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0093] For the first example, 60% by weight of SAN (LURAN 378P TM ) and 40% by weight of TPC-ET (ArnitelEM400 TM ) is adjusted to a temperature of preferably 250°C + / - 10°C and is injection moldable with the addition of 3% pigment (preferably a commercially available type of black pigment - carbon black CI 77266, which is available in different companies) Viscous state and mix evenly at the same time. No other fillers or excipients are added. For this purpose, extruders from the company Leistritz (90459 Nuremberg, Germany) can be used.

[0094] The real injection molding process can be carried out on the E-motion 940 / 160T injection molding machine of Engel Company (90451 Nuremberg, Germany). The prepared material is injected into the cavity of the injection mold with an injection pressure of about 1400 bar. The injection mold is then cooled by a liquid medium which flows through the injection mold in a sealed manner relative to the cavity. In particular, the core pin of t...

no. 2 example

[0106] To make the second example, 60% by weight of AES (ROTEC A702 TM ) and 40% by weight of TPC-ET (Arnitel EM400 TM ) is adjusted to a temperature of preferably 250° C. + / - 10° C. with the addition of 3% pigments (preferably black pigments of the above-mentioned type) and brought into an injection moldable viscous state while being mixed homogeneously. No other fillers or auxiliary materials are added.

[0107]Material processing is also carried out during the pouring process by means of the machine described there, as described above for the first exemplary embodiment.

[0108] The casing 2 thus produced is particularly preferred to look as figure 1 as shown.

[0109] The cover produced in this way exhibits a remarkably scratch-resistant, satin-gloss outer peripheral surface. It is resistant to migration of refill components and decorates well.

[0110] Examination with the aid of Raman spectroscopy, as described in detail below, showed that, during injection molding ...

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PUM

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Abstract

The invention relates to a pen for applying a coloured and / or cosmetic substance, having a refill made of the substance to be applied and an integrally injection-moulded sleeve, encasing the refill, made of a thermoplastic material, which consists of a mixture of a first and a second plastics material, wherein the sleeve has, in each case as seen in the radial direction, an outer enrichment zone with a greater concentration of the first plastics material than in the central region, and wherein the sleeve has, in each case as seen in the radial direction, an inner enrichment zone with a greaterconcentration of the first plastics material than in the central region.

Description

technical field [0001] The invention according to the preambles of the respective independent claims relates to a sharpenable pen, in particular a cosmetic pen, and a method for its manufacture. Background technique [0002] Cosmetic pencils are widely circulated, where the refill is contained by a wooden pen cover. Wooden pen covers can be manually sharpened and re-sharpened well with a pencil sharpener, which works on the same principle as a pencil sharpener. [0003] But the manufacture of wooden pen covers is inherently complex. To do this, the planks must be placed in molds, glued and subsequently divided by milling. [0004] Yet other specific problems arise in cases where the pen is not intended to be a pencil or colored pencil, but should be manufactured as a cosmetic pencil. [0005] Makeup pencils generally require a higher quality wood than colored pencils. This is because cosmetic pencils should generally have a more uniform and symmetrical tapered image. In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D23/00B43K19/16A45D40/20B29C45/16
CPCB29L2023/00B29C45/1634B29C45/72B29K2021/003B43K19/16B29C2045/0037A45D40/20B29C2793/0027B29C45/0001B29C45/16B29C45/73B29K2995/002B29L2031/718
Inventor 沃尔夫冈·考尔克里斯蒂娜·策希
Owner A W FABER CASTELL COSMETICS GMBH
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