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Degradable pencil holder, pencil and fabricating method thereof

A manufacturing method and technology of pencils, applied in the direction of penholders, non-active pencils, printing, etc., can solve the problems of waste of high-quality wood, fragile pencils, high production costs, etc., and achieve the effects of reducing lead breakage, reducing wood consumption, and low cost

Active Publication Date: 2009-10-28
SHENZHEN CERTAINN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The barrel of a pencil is generally made of wood. When making the barrel, a lot of cutting processes are required to make the log into a round, regular hexagonal or regular octagonal penholder. The process is quite cumbersome, the production cost is high, and a lot of waste high-quality wood, the consumption of a large amount of forest resources is very unfavorable to the already increasingly fragile ecological environment
[0003] In order to reduce the amount of wood used, pencil manufacturers have developed pencils using paper pen holders, but the original material of many papers is still wood, so this paper pen holder is equivalent to indirectly consuming wood; Chinese patent application 00123248.7 discloses a gypsum The texture of the gypsum is relatively brittle. Such pencils are easy to break and may produce dust during the practical process, which is inconvenient to use.

Method used

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  • Degradable pencil holder, pencil and fabricating method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment one: polyhydroxyalkanoate adopts poly-β-hydroxybutyrate; Starch adopts cornstarch; Cross-linking agent adopts dioctyl ester; Diol=1:2.

Embodiment 2

[0028] Embodiment two: polyhydroxyalkanoate adopts polylactic acid; Starch adopts sweet potato starch; Cross-linking agent adopts dibutyl ester; Plasticizer adopts the mixture of glycerol and ethylene glycol, and weight ratio is: glycerol: ethylene glycol=1: 2.

Embodiment 3

[0029] Embodiment three: polyhydroxyalkanoate adopts polycaprolactone; Starch adopts tapioca starch; Cross-linking agent adopts the mixture of dioctyl ester and dibutyl ester, and weight ratio is: dioctyl ester: dibutyl ester=1: 1; The plasticizer is a mixture of glycerin and ethylene glycol, and the weight ratio is: glycerol: ethylene glycol = 1:2.

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Abstract

The invention provides a degradable pencil holder and a pencil adopting the same, wherein the pencil holder comprises the following components by the weight percent: 40-60 of polyhydroxy fatty acid ester, 30-50 of starch, 1-10 of cross linker and 1-10 of plasticizing agent. The invention also provides a fabricating method of the pencil, which comprises the steps of mixing raw materials, heating, lead penetrating and forming. The degradable pencil holder is environmental-friendly without toxicity, and can replace a wooden pencil holder so that wood consumption can be reduced; the pencil is easy to sharpen so as to reduce the lead-breaking; and the fabricating method of the pencil has simple process, convenient fabrication, low cost and no pollution.

Description

【Technical field】 [0001] The invention relates to writing implements, in particular to an environment-friendly, easy-to-manufacture, low-cost, convenient and practical degradable pencil holder, pencil and a manufacturing method thereof. 【Background technique】 [0002] Pencils consist of strips of lead embedded in a wooden barrel. The barrel of a pencil is generally made of wood. When making the barrel, a lot of cutting processes are required to make the log into a round, regular hexagonal or regular octagonal penholder. The process is quite cumbersome, the production cost is high, and a lot of waste The consumption of a large amount of forest resources is very detrimental to the increasingly fragile ecological environment. [0003] In order to reduce the amount of wood used, pencil manufacturers have developed pencils using paper pen holders, but the original material of many papers is still wood, so this paper pen holder is equivalent to indirectly consuming wood; Chinese ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L3/02C08K5/10C08K5/053B43K19/02B43K3/00B43K19/16
Inventor 王辉胡笑天王涛
Owner SHENZHEN CERTAINN TECH CO LTD
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