CN110467848A

CN110467848A - Pencil-lead

Info

Publication number: CN110467848A
Application number: CN201910884541.8A
Authority: CN
Inventors: 徐敏; 拉弗蒂·杰米·德拉麦尔; 陈莉; 孙和云; 王辉兰; 周琴; 朱婷
Original assignee: Anshuo Cultural And Educational Supplies (shanghai) Co Ltd
Current assignee: Anshuo Cultural And Educational Supplies (shanghai) Co Ltd; Axus Stationery Shanghai Co Ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2019-11-19

Abstract

The invention discloses a kind of pencil-leads, it contains clay, microwax, paraffin, stearic acid, hydroxypropyl methyl cellulose, pigment, titanium dioxide, and its fumed silica, wherein, the weight percent of the clay is 40-67%, the weight percent of the microwax is 4-6%, the weight percent of the paraffin is 5-8%, the stearic weight percent is 8-14%, the weight percent of the hydroxypropyl methyl cellulose is 2-6%, the weight percent of the pigment is 8-14%, the weight percent of the titanium dioxide is 4-7%, the weight percent of the fumed silica is 2-5%.The proportion that the pencil-lead passes through the different weight percentage of different component, improve intensity and toughness, so that having very high row yielding in tipping process, it is not easily broken when pencil sharpener is cut, writing quality is improved simultaneously, that is, is coloured when writing, colouring is easy on paper, smoothness is good, to improve work efficiency indirectly.

Description

Pencil-lead

Technical field

The present invention relates to a kind of pencil-lead more particularly to a kind of colored pencil pen cores.

Background technique

Colored pencil is one of more commonly used stationery, and conventional colored pencil pen core adds mainly using clay as binder Pigment, constitution raw material (such as talcum powder), adhesive and the wax extrusion forming after mixed grinding.Such colored pencil usually exists Following problems: if it is intended to writing quality is good, then pen core intensity is not high, and in tipping process, row yielding is low and pencil sharpener is cut Shi Bixin is easily broken；If improving pen core intensity, writing quality can be reduced, it is hard when such as writing, it is not easy to paint on paper, it is not smooth Deng.

Summary of the invention

In view of the above drawbacks of the prior art, technical problem to be solved by the invention is to provide a kind of pencil-leads, should Pencil-lead has good intensity and toughness, and writing quality is good.

To achieve the above object, the present invention provides a kind of pencil-leads, and containing clay, microwax, paraffin is stearic Acid, hydroxypropyl methyl cellulose, pigment, titanium dioxide and its fumed silica, wherein the weight percent of the clay is 40- 67%, the weight percent of the microwax is 4-6%, and the weight percent of the paraffin is 5-8%, the stearic weight percent Than being 2-6% for the weight percent of 8-14%, the hydroxypropyl methyl cellulose, the weight percent of the pigment is 8-14%, The weight percent of the titanium dioxide is 4-7%, and the weight percent of the fumed silica is 2-5%.

The weight percent of the clay is 40%, and the weight percent of the microwax is 6%, the weight percent of the paraffin It is 8%, which is 14%, and the weight percent of the hydroxypropyl methyl cellulose is 6%, the pigment Weight percent is 14%, and the weight percent of the titanium dioxide is 7%, and the weight percent of the fumed silica is 5%.

As the first alternate embodiment, the weight percent of the clay is 56%, the weight percent of the microwax Than being 5.5%, the weight percent of the paraffin is 5.8%, which is 12.7%, the hydroxypropyl methyl The weight percent of cellulose is 4.5%, and the weight percent of the pigment is 10%, and the weight percent of the titanium dioxide is 3%, The weight percent of the fumed silica is 2.5%.

As second of alternate embodiment, the weight percent of the clay is 58.5%, the weight hundred of the microwax Divide than being 4%, the weight percent of the paraffin is 5%, which is 12.5%, hydroxypropyl methyl fibre The weight percent of dimension element is 4.5%, and the weight percent of the pigment is 10%, and the weight percent of the titanium dioxide is 3%, should The weight percent of fumed silica is 2.5%.

As the third alternate embodiment, the weight percent of the clay is 49.5%, the weight hundred of the microwax Divide than being 5.5%, the weight percent of the paraffin is 6.5%, which is 13.5%, the hydroxypropyl first The weight percent of base cellulose is 4.5%, and the weight percent of the pigment is 14%, and the weight percent of the titanium dioxide is 4%, the weight percent of the fumed silica is 2.5%.

As the 4th kind of alternate embodiment, the weight percent of the clay is 67%, the weight percent of the microwax Than being 4%, the weight percent of the paraffin is 5%, which is 8%, the hydroxypropyl methyl cellulose Weight percent be 2%, the weight percent of the pigment is 8%, and the weight percent of the titanium dioxide is 4%, the gas phase two The weight percent of silica is 2%.

Pencil-lead of the invention improves intensity and toughness by the proportion of the different weight percentage of different component, So that there is very high row yielding in tipping process, it is not easily broken when pencil sharpener is cut, while improving writing quality, that is, when writing It colours, colouring is easy on paper, smoothness is good, to improve work efficiency indirectly.

The technical effect of design of the invention, specific structure and generation will be described further below, with fully Solve the purpose of the present invention, feature and effect.

Specific embodiment

Pencil-lead of the present invention contains clay, microwax, paraffin, stearic acid, hydroxypropyl methyl cellulose, pigment, titanium white Powder and its fumed silica, wherein the weight percent of the clay is 40-67%, and the weight percent of the microwax is 4- 6%, for improving toughness, the weight percent of the paraffin is 5-8%, which is 8-14%, the hydroxyl The weight percent of propyl methocel is 2-6%, and for improving intensity, the weight percent of the pigment is 8-14%, should The weight percent of titanium dioxide is 4-7%, and the weight percent of the fumed silica is 2-5%, for improving intensity.

It is specifically described below by embodiment.

Embodiment one

Embodiment two

Component	Weight percent
		Clay	56
Microwax	5.5
		Paraffin	5.8
Stearic acid	12.7
		Hydroxypropyl methyl cellulose	4.5
Pigment	10
		Titanium dioxide	3
Fumed silica	2.5

Embodiment three

Component	Weight percent
		Clay	58.5
Microwax	4
		Paraffin	5
Stearic acid	12.5
		Hydroxypropyl methyl cellulose	4.5
Pigment	10
		Titanium dioxide	3
Fumed silica	2.5

Example IV

Embodiment five

Component	Weight percent
		Clay	67
Microwax	4
		Paraffin	5
Stearic acid	8
		Hydroxypropyl methyl cellulose	2
Pigment	8
		Titanium dioxide	4
Fumed silica	2

The pencil-lead has very high row yielding in tipping process, and not easily broken when pencil sharpener is cut, the substance used is all Natural environmental-protective, meet " regulation about chemicals registration, assessment, license and limitation " of European Union, meanwhile, the pencil-lead Preparation does not need to change existing production technology, does not need to introduce new equipment yet, directly continues to use existing production technology and its set It is standby to produce in batches.

The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea Technical solution, all should be within the scope of protection determined by the claims.

Claims

1. a kind of pencil-lead contains clay, microwax, paraffin, stearic acid, hydroxypropyl methyl cellulose, pigment, titanium white Powder and its fumed silica, wherein the weight percent of the clay is 40-67%, and the weight percent of the microwax is 4- 6%, the weight percent of the paraffin is 5-8%, which is 8-14%, the hydroxypropyl methyl cellulose Weight percent be 2-6%, the weight percent of the pigment is 8-14%, and the weight percent of the titanium dioxide is 4-7%, should The weight percent of fumed silica is 2-5%.

2. pencil-lead as described in claim 1, it is characterised in that: the weight percent of the clay is 40%, the microwax Weight percent be 6%, the weight percent of the paraffin is 8%, which is 14%, the hydroxypropyl The weight percent of methylcellulose is 6%, and the weight percent of the pigment is 14%, and the weight percent of the titanium dioxide is 7%, the weight percent of the fumed silica is 5%.

3. pencil-lead as described in claim 1, it is characterised in that: the weight percent of the clay is 56%, the microwax Weight percent be 5.5%, the weight percent of the paraffin is 5.8%, which is 12.7%, should The weight percent of hydroxypropyl methyl cellulose is 4.5%, and the weight percent of the pigment is 10%, the weight hundred of the titanium dioxide Divide than being 3%, the weight percent of the fumed silica is 2.5%.

4. pencil-lead as described in claim 1, it is characterised in that: the weight percent of the clay is 58.5%, the crystallite The weight percent of wax is 4%, and the weight percent of the paraffin is 5%, which is 12.5%, the hydroxyl The weight percent of propyl methocel is 4.5%, and the weight percent of the pigment is 10%, the weight percent of the titanium dioxide Than being 3%, the weight percent of the fumed silica is 2.5%.

5. pencil-lead as described in claim 1, it is characterised in that: the weight percent of the clay is 49.5%, the crystallite The weight percent of wax is 5.5%, and the weight percent of the paraffin is 6.5%, which is 13.5%, The weight percent of the hydroxypropyl methyl cellulose is 4.5%, and the weight percent of the pigment is 14%, the weight of the titanium dioxide Percentage is 4%, and the weight percent of the fumed silica is 2.5%.

6. pencil-lead as described in claim 1, it is characterised in that: the weight percent of the clay is 67%, the microwax Weight percent be 4%, the weight percent of the paraffin is 5%, which is 8%, the hydroxypropyl The weight percent of methylcellulose is 2%, and the weight percent of the pigment is 8%, and the weight percent of the titanium dioxide is 4%, the weight percent of the fumed silica is 2%.