JPS6082398A - Synthetic resin pencil containing brilliant substance - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a metal foil piece generally referred to as lame.

The present invention relates to a synthetic resin pencil mixed with a glittering substance such as a metal or colored quartz alone or as a mixture, and more particularly to a synthetic resin pencil whose surface and cut surface are sparkling.

In recent years, synthetic wood has been replacing natural wood in various fields, but its spread has been slow in some fields due to quality and performance issues. In the field of pencils, a number of inventions have been proposed for scenting synthetic resin pencils with the aim of promoting purchasing power for synthetic resin pencils, but all of them satisfy the sense of smell.

The present invention satisfies the visual sense, and in recent years, many children's pencils have been cut by machines (pencil sharpeners), and many children are unable to use a knife satisfactorily.

The present invention allows such children to acquire the habit of sharpening pencils in a fun manner, and helps in art education.

Conventional synthetic resin pencils are made of rigid synthetic resins such as polystyrene, impact-resistant polystyrene, and -7crylonitrile-styrene copolymer ('AS resin).

Butadiene, acrylonitrile-styrene copolymer (A
BS resin) and 444 i'+J of these mixed substances
Plastic synthetic resins are used, and these synthetic resins are fibers. d
It is mixed with additives such as i-strength materials (for example potassium titanate short fibers, glass fibers), stabilizers (for example stearic acid), pigment blowing agents (for example azodicarbonamide) and is molded into a shaft.

The synthetic resin pencil containing the glittering substance of the present invention can be produced in accordance with a method known per se. 1. For example, 100 M parts of the above-mentioned rigid thermoplastic synthetic resin is added with a reinforcing fiber cloth that also serves as reinforcement, such as potassium titanate short film. 1 to 10 parts by weight of fiber,
If necessary, add appropriate amounts of other additives such as ζ stabilizers and pigments, and further add glittering substances such as metal foil pieces, metal powder, or colored quartz called glitter. .5
~20 parts by weight, preferably 2 to 10 parts by weight, are preformed into pellets, and then 100 parts of the pellets are treated with thermally decomposable lθ agents such as azodicarbonamide 1', hydrazodicarbonamide, N , N-dinitrohentamethylenetetramine, bishenzenesulfonylhydrazine,
0.5 to 2 parts (9) parts, preferably 0.5 to 1.0 parts by weight, of toluene sulfonyl (1-l)-', etc., and, if necessary, a spreading agent such as Bren 1 oil. The blowing agent is evenly applied to the pellet surface. 5. Is the light cicada substance emitted? There is no problem in adding it when mixing the fi agent.

Thereafter, the resulting mixture is fed to an extruder, and in the extruder, the pellets are heated to a temperature of 160 to 200°C at a temperature of 6μ degrees or more for decomposition of the blowing agent.
Then, by molding it into a pencil shape, for example, through a special crosshead together with a separately prepared pencil lead, the glittering synthetic resin pencil containing a glittering substance dispersed therein of the present invention can be obtained.

The glittering substance used in the synthetic resin pencil containing the glittering substance of the present invention includes aluminum, aluminum, brass, etc., but aluminum glitter is not readily available (there are many varieties such as colored ones, so it is easy to use). The shape of aluminum metal foil flakes includes rectangles, squares, deformations, diamond shapes, etc., and those with a thickness of 0.03 to 0.01 mm are known.

The mensch size of the metal foil piece is 200 to 250 mesos.
145-170 mesh, 100-120 mesh 1.4
Since they are industrially produced in several sizes such as 8 to 50 sized and 24 to 28 sized, they can be used alone or in combination depending on the intended use.

Regarding colors, the surface is colored with pigment ink, dye ink, etc., and there are glitters such as red, blue, yellow, green, and black.

Further, since it is coated with a clear lacquer such as epoxy resin or nitrocellulose resin, it has good corrosion protection of the aluminum base metal and is suitable for compatibility with the resin.

As mentioned above, the glittering substance-dispersed synthetic resin pencil of the present invention has glittering substances dispersed on the shaft surface and inside the shaft, which cannot be obtained with natural wood barrels, so it sparkles when cut and children can enjoy cutting it. can do.

Next, the present invention will be further explained by examples.

Example 1゜Polystyrene 7 73 parts by weight impact polystyrene 10M 1 part metal chip lame NO, 7 (IcI+ (width metal foil 7 weight parts) manufactured by Kogyo 24-28 mesh gold color) Potassium titanate staple fiber (Dupont) Company'IM 10 parts by weight F Y 13 r Ci . Using the thus obtained Pereso 1~, a foaming agent was added in the following manner to produce a synthetic resin pencil in which a ζ glittering substance was dispersed.

Pellets 100 parts by weight Blend oil (Dainippon Ink 0.8 parts by weight Kagaku Kogyo 01 Mr Dipasol) Foaming agent (Azodicarbonamide) 0.6 parts by weight First, blend oil was added to the pellets in a tumbler mixer and premixed. Add the foaming agent to it and mix thoroughly.

The shaft material prepared above was processed using a special crosshead.
J, L is supplied to a molding machine, extruded coaxially with a pre-made pencil lead, and molded into a hexagonal or round shaft using a sizing die.

The thus obtained pencil had glittering substances dispersed on its surface, and when cut with a knife, the cut surface sparkled and became a fun pencil.

Example 2゜ABIJ fat 90i Amount ii Potassium titanate short fiber shoulder f 7 parts talc 5 parts by weight Zinc stearate 0.5 parts by weight or more of each component was mixed in a heating high-speed mixer, and then in an extrusion molding machine. It becomes Pereso 1. Using the pellet thus obtained, a glittering substance dispersion synthesis A41 oil pencil was made as follows.

Prescription A.

Beresol l-100 parts by weight blend oil ("Polyzomar" manufactured by Tokyo Shin Nipponka Co., Ltd. 0.5 city, 1 sweat part sales) Aluminum lame (silver color) NO, 405ffi gate (manufactured by Fukuyama Metal Foil & Powder Industry) Packaging agent ( Azodicarbonamide) 0.6 parts by weight Colorant 0.2 parts by weight In a tumbler mixer, first add the blend oil to the pellet and pre-mix (M), and add aluminum glitter to it.

Add blowing agent and colorant and mix thoroughly.

Prescription B.

Beresol l-100 parts by weight blend oil (Tokyo Shin Nipponka 0.5 weight curved @ri "Vorizomar") Metal foil piece lame NO, 7012B blue Type 1 tank (?FA)
Metal Foil Powder Millet M) Lame NO, 70CI (Gold Color 2M parts (Metal Foil Powder Industry for Width!i!!) Foaming agent (azodicarbonamide) 0.5ffilrt Colorant 0.3 parts 11) parts Tumbler In a mixer, first add blended oil to the pellet and mix it with pre-W7, then add metal foil powder lame No. 70 to it.
Add RB, lame No., "70C" (and foaming agent and coloring agent) and mix thoroughly.

The shaft material of prescription A or prescription B prepared above is fed to an extrusion molding machine equipped with a special crosshead, a pre-made pencil lead is coaxially extruded, and the shaft material is molded into a hexagonal shaft or a round shaft using a sizing die.

The pencil shaft thus obtained had a glittering substance dispersed on its surface or inside, resulting in a beautiful synthetic resin pencil with a sparkle that could not be obtained with a natural wood shaft.

Marine license applicant 1-Nho Pencil Co., Ltd. Representative Kohei Ogawa

Claims (1)

[Claims] A synthetic 4A4 fat pencil consisting of a pencil lead and a rigid low-foaming synthetic resin shaft surrounding the lead, and a synthetic resin pencil made by mixing a glittering substance into the low-foaming synthetic resin forming the shaft.