Anti-impact pencil-lead-fracture-resistant pencil, and preparation method thereof

An anti-break, pencil technology, applied in the direction of pencil lead, application, household utensils, etc., can solve the problems of difficult positioning, lead breakage, affecting normal use, etc., to reduce the consumption of wood, fine structure, rich and diverse. Effect

Inactive Publication Date: 2019-01-11
蚌埠神龙笔业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the convenience of use, the shell of the pencil is usually designed to be cylindrical or prismatic. However, when the pencil is placed on the table,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1

[0033] A method for preparing a fall-resistant and broken core pencil includes the following steps:

[0034] S1. The wooden raw materials are pulverized to 220 meshes and sterilized by ultraviolet for 28 minutes to obtain wood powder; the wooden raw materials include sawdust, wheat straw, peanut shells, chestnut shells, the weight of the sawdust, wheat straw, peanut shells, and chestnut shells The ratio is 5.2:5.3:1.8:2.7;

[0035] S2. Mix 60 parts by weight of wood flour obtained in S1, 23 parts by weight of pozzolan, 9 parts by weight of starch, 2.8 parts by weight of sodium carbonate, 7 parts by weight of natural latex, and 26 parts by weight of water, knead for 14 minutes, and pour into a plate shape In the mold, let it stand and cure for 3.4 hours at a temperature of 50°C, then demold to obtain a pencil board;

[0036] S3. Place the pencil board obtained in S2 for 11 hours in an environment of 40°C for curing, planing into a grooved plate suitable for the diam...

Example Embodiment

[0043] Example 2

[0044] A method for preparing a fall-resistant and broken core pencil includes the following steps:

[0045] S1. The wooden raw materials are crushed to 240 meshes and sterilized by ultraviolet for 23 minutes to obtain wood powder; the wooden raw materials include sawdust, corn stalks, peanut shells, chestnut shells, the weight of the sawdust, corn stalks, peanut shells, and chestnut shells The ratio is 5.7:6.2:1.4:2.3;

[0046] S2. Mix 64 parts by weight of wood flour obtained in S1, 22 parts by weight of pozzolan, 10 parts by weight of starch, 1.3 parts by weight of sodium carbonate, 8 parts by weight of natural latex, and 22 parts by weight of water, knead for 11 minutes, and pour into a plate shape In the mold, let it stand and cure for 5 hours at a temperature of 60°C, then demold to obtain a pencil board;

[0047] S3. Place the pencil board obtained in S2 for 13 hours at 35°C for curing, planing into a grooved plate suitable for the diameter of the pencil lea...

Example Embodiment

[0054] Example 3

[0055] A method for preparing a fall-resistant and broken core pencil includes the following steps:

[0056] S1. The wooden raw materials are pulverized to 280 meshes and sterilized by ultraviolet for 26 minutes to obtain wood powder; the wooden raw materials include sawdust, rice straw, peanut shells, chestnut shells, the weight of the sawdust, rice straw, peanut shells, and chestnut shells The ratio is 4.3:5.8:1.2:3.7;

[0057] S2. Mix 57 parts by weight of wood flour obtained in S1, 24 parts by weight of pozzolan, 11 parts by weight of starch, 1.7 parts by weight of sodium carbonate, 10 parts by weight of natural latex, and 24 parts by weight of water, knead for 12 minutes, and pour into a plate shape In the mold, let it stand and cure for 4.5 hours at a temperature of 55°C, then demold to obtain a pencil board;

[0058] S3. Place the pencil board obtained in S2 for 12 hours in an environment of 45°C for curing, plan it into a grooved plate suitable for the diam...

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Abstract

The invention discloses an anti-impact pencil-lead-fracture-resistant pencil, and a preparation method thereof. The preparation method comprises following steps: by weight, 55 to 65 parts of wood powder obtained in a step S1, 20 to 25 parts of vulcanic ash, 8 to 13 parts of starch, 1 to 3 parts of sodium carbonate, 6 to 10 parts of natural latex, and 20 to 30 parts of water are mixed, are subjected to kneading, and are introduced into a plate-shaped mould for standing solidification so as to obtain a pencil plate; the pencil plate is subjected to planning so as to obtain channel boards matching pencil diameters, and a pencil lead and a channel board are bonded using an adhesive so as to obtain a pencil. Damage of the anti-impact pencil-lead-fracture-resistant pencil in falling to the ground is prevented, the impact force of the pencil in falling onto the ground can be eliminated, and pencil leads are protected from being broken.

Description

technical field [0001] The invention relates to the field of pencil preparation, in particular to a fall-resistant and broken-core pencil and a preparation method thereof. Background technique [0002] Pencil is an indispensable tool in the process of teaching and drawing. It has the characteristics of easy erasure and modification, and plays a decisive role in primary school students' learning and people's drawing work. A pencil is mainly composed of a pencil shaft and a lead. [0003] Present pencil generally all is to adopt to fix a lead lead in the wooden shell inside, and can use after the wooden shell of outside is cut off during use. Due to the convenience of use, the shell of the pencil is usually designed to be cylindrical or prismatic. However, when the pencil is placed on the table, it is easy to roll around and is not easy to locate. If it falls on the ground, it is easy to break the lead inside. break, thus affecting normal use. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): C08L97/02C08L3/02C08L7/02C08K3/26C09D13/00
CPCC08K2003/265C08L97/02C08L2205/025C08L2205/035C09D13/00C08L3/02C08L7/02C08K3/26
Inventor 朱建青
Owner 蚌埠神龙笔业有限公司
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