CN1113857A

CN1113857A - Method for producing plastic pencil

Info

Publication number: CN1113857A
Application number: CN 94110665
Authority: CN
Inventors: 王宝民
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-06-24
Filing date: 1994-06-24
Publication date: 1995-12-27

Abstract

The present invention provides a method for making plastic pencil, and is aimed at solving the waste of wood to produce plastic pencil by replacing wood with plastics. Its formula includes (wt%) 10-60 of polyethylene, 10-60 of polypropylene, 10-60 polyvinyl chloride, 5-50 of pottery clay, 10-50 of talcum powder, 15-50 of gypsum powder and appropriate pigment, and the above-mentioned ingredients are uniformly mixed, and passed through the process of injection moulding treatment, and can be made into the invented plastic pencil. The pencil produced by using said method has the following charcteristics: its technological process is simple, cost is low, it can use plastics or regenerated plastics as raw materials and can save a large quantity of high-quality wood.

Description

A kind of manufacture method of plastic pencil

The present invention relates to a kind of manufacture method of stationery, specifically a kind of manufacture method of plastic pencil.

Pencil is a kind of cultural tools commonly used; its structure is lead of rod therebetween; but producing the used material of pencil rod is high-quality timber; with whole round log through a lot of cutting action addition one rule penholder; produce wooden penholder except that complex process; main is to consume a large amount of high-quality timber; just conserve forests at present, the greening mountains and rivers purifies nature; set up human necessary survival environment; seek the substitution material of Wood pencil, the consumption that reduces timber is very important, to mould Dai Mu in building industry; machinery manufacturing industry and other every profession and trades are widely-used, to mould for wood the technology report are not arranged also but make plastic pencil.

The purpose of this invention is to provide a kind of method with the production plastic pencil of moulding Dai Mu.

The objective of the invention is to realize in the following manner, promptly utilize polyethylene, polypropylene, polyvinyl chloride plastic or corresponding regenerated plastics to add additives such as potter's clay, talcum powder, gypsum material, look mother, injection molded through injection machine, its profile and common Wood pencil are identical, and same available cutter cutting.

Each the composition percentage composition of the batching of its polymer penholder of plastic pencil of the present invention is:

Prescription 1, major ingredient: PEF 10～60, polypropylene 10～60, polyvinyl chloride 10～60, additive: potter's clay 5～50, talcum powder 10～50, land plaster 15～50, look mother are in right amount.

Prescription 2, major ingredient: PEF 10～60, polypropylene 10～30, polyvinyl chloride 10～30, additive: potter's clay 5～20, talcum powder 10～50, land plaster 10～30, look mother are in right amount.

Prescription 3, major ingredient: PEF 10～20, polypropylene 10～6, polyvinyl chloride 10～20, additive: potter's clay 5～20, talcum powder 10～20, land plaster 10～60, look mother are in right amount.

Embodiment

Get 40 parts of polyvinyl chlorides, 10 parts of polypropylenes, 10 parts of PEFs, 10 parts in potter's clay, 15 parts of talcum powder, 20 parts of land plasters, look mother and mix in right amount, put into injection machine and add the lead for retractable pencil injection mo(u)lding and get final product.

Plastic pencil of the present invention, to compare its performance identical with existing Wood pencil, But presentation quality is brighter and cleaner than Wood pencil, good hand touch, and main can reduce timber Consumption and technology are simple, and small investment easily forms the characteristics such as batch production, extensively promotes making Produce good economic results in society with meeting.

Claims

1, a kind of manufacture method of plastic pencil is characterized in that pencil holder is by injection molding, and the composition of plastics comprises that major ingredient has polyethylene, polypropylene and polyvinyl chloride, and additive has potter's clay, talcum powder, land plaster, look mother etc.

2, method according to claim 1: it is characterized in that each composition of plastics percentage composition be major ingredient: PEF 10～60, polypropylene 10～60, polyvinyl chloride 10～60, additive: potter's clay 5～50, talcum powder 10～50, land plaster 15～50, look female are an amount of.

3, method according to claim 1: the percentage composition that it is characterized in that each composition of plastics is a major ingredient: PEF 10～60, polypropylene 10～30, polyvinyl chloride 10～30, additive: potter's clay 5～20, talcum powder 10～50, land plaster 10～30, look mother are in right amount.

4, method according to claim 1: the percentage composition that it is characterized in that each composition of plastics is a major ingredient: PEF 10～20, polypropylene 10～60, polyvinyl chloride 10～20, additive: potter's clay 5～20, talcum powder 10～20, land plaster 10～60, look mother are in right amount.