CN105001717A - Safe chalk - Google Patents

Abstract

The invention provides safe chalk. Edible starch is adopted as the raw material, after water and the starch are evenly mixed according to a certain proportion, the mixture is manufactured into the shape of the chalk through a mold, and the chalk is obtained after airing or drying is carried out. In order to manufacture colored chalk, food coloring can be put into the starch, and meanwhile, oriented to the curiosity psychology of babies or elementary school students, in order to prevent the babies or the elementary school students from eating the chalk, an edible bitter taste agent such as coptis can be put into the starch so that the babies or the elementary school students can feel the bitter taste and give up eating the chalk by themselves. The manufactured chalk cannot harm the human body and is safe and environmentally friendly.

Description

A kind of safe chalk

Technical field

The present invention relates to a kind of chalk, particularly relate to a kind of safe chalk.

Background technology

Existing white chalk is mostly be made up of the material such as gypsum, lime, and pastel is then put into coloured pigment in gypsum material, and the chalk dust produced after these chalks use easily works the mischief to HUMAN HEALTH.

Summary of the invention

Object of the present invention is exactly provide a kind of safe chalk that can not work the mischief to human body health for above-mentioned situation.

Object of the present invention realizes by following scheme: the raw material that the safe chalk of the present invention adopts is edible starch, a certain proportion of water and starch is adjusted evenly, makes chalk shape, dry or dry with mould.

In order to make pastel, edible pigment can be put in starch.

Simultaneously for the psychology of child or primary school student curiosity, avoid its edible chalk, edible bitters such as coptis root can be put in starch, make it feel bitter and automatically abandon eating.

The amount ratio of described starch and water is 100:5-8.

The invention has the beneficial effects as follows: the chalk that the present invention makes can not damage human body, safety and environmental protection.

Embodiment

Embodiment:

A kind of safe chalk, adopts edible starch as raw material, a certain proportion of water and starch is adjusted evenly, makes chalk shape, dry or dry with mould;

Preferably, in starch, put into edible pigment, to make pastel;

Preferably, in starch, put into edible bitters such as coptis root, make it feel bitter and automatically abandon eating;

Preferably, the amount ratio of described starch and water is 100:8.

Claims (4)

1. a safe chalk, is characterized in that adopting food starch to make raw material, a certain proportion of water and starch is adjusted evenly, make chalk shape, dry or dry with mould.

2. chalk according to claim 1, is characterized in that in starch, put into edible pigment.

3., according to the arbitrary described chalk of claim 1,2, it is characterized in that in starch, put into edible bitters.

4. chalk according to claim 1, is characterized in that the amount ratio of described starch and water is 100:5-8.