Unlock instant, AI-driven research and patent intelligence for your innovation.

Resin composite material pencil

A technology of resin composite materials and pencils, which is applied in the direction of pencil lead, non-mechanical pencil, printing, etc., can solve the problems of skin discomfort, low yield, easy core deviation, etc., and achieve the effect of saving wood resources, simple process and energy saving

Inactive Publication Date: 2008-08-06
周意人
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many kinds of plastic pencils on the market, but the plastics all contain toxic ingredients to varying degrees, and the molding process follows the extrusion process of plastic products, which is easy to eccentric, and the yield is low. No matter in terms of weight, hand feeling, or writing effect, they are not as good as Wooden pencils, and plastic pencils are uncomfortable for the skin and prone to bacteria if held in the hands for a long time

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Resin composite material pencil, the pen holder is composed of the following ingredients in proportion by weight: water-based polyurethane 50, edible starch 10, glass microspheres 5, nano-titanium dioxide 0.1, nano-zinc oxide 0.5, zinc stearate 1, light calcium carbonate 10. Flexible unsaturated polyester resin 5;

[0012] The pen core is composed of the following ingredients in proportion by weight: flexible unsaturated polyester resin 10, water-based polyurethane 5, edible starch 10, graphite 45, nano silicon dioxide 0.05, silicon carbide 0.1;

[0013] The above products are all commercially available products.

[0014] The method for making a resin composite material pencil is:

[0015] 1) Stir the components of the penholder evenly by weight at room temperature, pultrude with a pultrusion equipment to make a hollow penholder, and the penholder is formed;

[0016] 2) Stir the components of the pen core evenly in parts by weight at room temperature, then use an inje...

Embodiment 2

[0018] Resin composite material pencil, the pen holder is composed of the following ingredients in proportion by weight: water-based polyurethane 60, edible starch 15, glass microspheres 8, nano-titanium dioxide 0.5, nano-zinc oxide 1, zinc stearate 2, light calcium carbonate 12. Flexible unsaturated polyester resin 7;

[0019] The pen core is composed of the following ingredients in proportion by weight: flexible unsaturated polyester resin 15, water-based polyurethane 8, edible starch 12, graphite 60, nano-silica 0.1, silicon carbide 0.2; the above products are commercially available products .

[0020] The preparation method of resin composite material pencil is with embodiment 1.

Embodiment 3

[0022] Resin composite material pencil, the pen holder is composed of the following ingredients in proportion by weight: water-based polyurethane 70, edible starch 20, glass microspheres 10, nano-titanium dioxide 1, nano-zinc oxide 3, zinc stearate 5, light calcium carbonate 15. Flexible unsaturated polyester resin 10;

[0023] The pen core is composed of the following ingredients in proportion by weight: flexible unsaturated polyester resin 20, water-based polyurethane 10, edible starch 15, graphite 85, nano-silica 0.2, silicon carbide 0.3; the above products are commercially available products .

[0024] The preparation method of resin composite material pencil is with embodiment 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a resin composite pencil, wherein the holder comprising the following apportioned by weight: aqueous polyurethane for 50-70, edible starch for 10-20, glass bead for 5-10, nano titania for 0.1-1, nano zinc oxide for 0.5-3, zinc stearate for 1-5, light calcium carbonate for 10-15, liner unsaturated polyester resin for 5-10; and the lead comprising the following apportioned by weight: liner unsaturated polyester resin for 10-20, aqueous polyurethane for 5-10, edible starch for 10-15, potlead for 45-85, nano silica dioxide for 0.05-0.2, carbofrax for 0.1-0.3. The advantages of the pencils by the invention are: saving a great amount of wood, and because the material selected is liquid after mixing, the process easy, saving energy, never diverge lead, elastical, resistant to cast and tuck, excellent tactility.

Description

technical field [0001] The invention relates to a pencil made of a novel material, which is a resin composite material pencil. Background technique [0002] At present, my country's annual output of wooden pencils is about 7 billion, which is equivalent to destroying 500 square kilometers of forest every year, consuming 300,000 cubic meters of high-quality wood, and seriously damaging the ecological environment. Paper pencils have occurred now, and the raw materials of paper pencils are still wood, so the problem of resource destruction is not fundamentally solved. There are many kinds of plastic pencils on the market, but the plastics all contain toxic ingredients to varying degrees, and the molding process follows the extrusion process of plastic products, which is easy to eccentric, and the yield is low. No matter in terms of weight, hand feeling, or writing effect, they are not as good as Wooden pencils, and plastic pencils are uncomfortable for the skin and prone to ba...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B43K19/02B43K19/16C08L75/04C09D13/00B29C69/02
Inventor 周意人
Owner 周意人