JPH08197886A - Manufacture of pencil - Google Patents

Abstract

PURPOSE: To provide a method for manufacturing a novel pencil in which the laminar colored pattern is expressed at the cut surface at a low cost. CONSTITUTION: A plurality of thin platelike colored veneers are superposed by bringing grain directions into coincidence and stuck to form a plywood 2, fine grooves 3 are opened along the grain direction on the one side surface of the plywood 2, the two plywoods 2 are joined together by filling pencil leads 4 in the grooves 3 to be sandwiched, and then its outer profile is cut in a rod state to be finished.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a pencil in which a cut surface has a layered colored pattern.

[0002]

2. Description of the Related Art As is well known, a pencil has a large number of thin grooves along a grain formed on one surface of a plate having a thickness of several millimeters and having a good cutting property. After the two plates are put together and the two plates are attached to each other, the outer surfaces of the both plates are further cut to form a columnar outer shape without separation for each pencil lead, and the outer peripheral surface is coated. .

[0003]

By the way, since the conventional pencil has a simple grain pattern on the conical surface cut for use, there is no novel point as a commercial product, and improvement is desired.

Therefore, the present invention is intended to provide a method for producing a novel and attractive pencil in which a layered colored pattern is always present on the cut surface.

[0005]

Therefore, the method for manufacturing a pencil of the present invention is to form a plywood by polymerizing and adhering a plurality of thin plate-like colored veneers in the grain direction of each other. A thin groove is formed on one surface of the plywood along the grain direction, two plywoods are put together with a pencil lead in the narrow groove, and are bonded together, and then the outer shape is cut into a rod shape. It was done. The present invention also provides a method of manufacturing a pencil as described above, in which a thin plate-shaped veneer is put into a pressure vessel together with a dyeing solution and pressurized and depressurized to penetrate the veneer into the veneer, and the desired color dyed inside the tissue is obtained. The colored veneer is formed, and a plurality of colored veneers of different colors are polymerized and adhered to form a plywood.

[0006]

Function: An interesting pencil can be produced in which a layered colored pattern due to the polymerization of colored veneers always appears on the cut surface even when cut for use.

[0007]

An embodiment of the present invention will be described with reference to the drawings. A plurality of thin plate-like colored veneers 1a to 1e shown in FIG.
Is a slice of raw wood sliced or cut to a thickness of about 1 to 2 mm, put it in a pressure vessel (not shown), depressurize the pressure vessel with a vacuum pump, and then select the desired red, blue, yellow, etc. A color dyeing solution is placed in the pressure vessel, the veneer is immersed in the dyeing solution, and the pressure in the pressure vessel is raised to 1 atm or more by a pressure pump, and the vat solution is formed into a tissue of the veneer. For example, the colored veneer 1a is dyed red to the internal tissue, the colored veneer 1b is dyed black, and the colored veneer 1 is
d is dyed blue, and the colored veneer 1e is dyed yellow. The colored veneer 1c is not colored.

Next, the colored veneers 1a to 1e are interposed, and the wood grain directions are made to coincide with each other to be polymerized and adhered to form a plywood 2 as shown in FIG. Then, as shown in FIG. 3, a plurality of fine grooves 3 each having a semicircular cross section along the grain direction are formed at regular intervals on one surface of the plywood 2, and a pencil lead 4 is inserted in each of the fine grooves 3. Another plywood plate 2 having the fine groove 3 formed therein is attached to the plywood plate 2 with an adhesive agent interposed therebetween, and the pencil lead 4 is sandwiched between the plywood plates 2 and 2 as shown in FIG.

After that, both outer surfaces of the plywoods 2 and 2 are cut, and the outer shape is cut into, for example, a hexagonal columnar shape to finish a pencil 5 as shown in FIG. 5, and the outer peripheral surface of the pencil 5 is coated as necessary. .

In the pencil 5 thus manufactured, the colored veneers 1a to 1e are layered on the conical cutting surface 6 when the pencil 5 is cut for use as shown in FIG.
The same layered colored pattern appears again even after cutting with use.

According to the pencil manufacturing method of the present invention, by using the plywood, it is possible to use the raw wood without waste even to the portion which has been conventionally waste material. Further, by using the sliced veneer, there is an effect that the yield is improved, the wood resources are effectively used, and the manufacturing cost is reduced without generating sawdust.

[0012]

As described above, according to the present invention, it is possible to manufacture a novel pencil in which a layered colored pattern appears on the cutting surface, which has the beneficial effects of improving the commercial value and reducing the manufacturing cost.

[Brief description of drawings]

FIG. 1 is a perspective view of a colored veneer showing an embodiment of the present invention.

FIG. 2 is a perspective view of a plywood showing an embodiment of the present invention.

FIG. 3 is a perspective view of a plywood showing an embodiment of the present invention.

FIG. 4 is a perspective view showing the embodiment of the present invention when the plywood is laminated.

FIG. 5 is a perspective view of a pencil showing an embodiment of the present invention.

FIG. 6 is a perspective view of a pencil when an embodiment of the present invention is cut.

[Explanation of symbols]

 1a to 1e Colored veneer 2 Plywood 3 Narrow groove 4 Pencil lead 5 Pencil 6 Cutting surface

Claims (2)

[Claims] 1. A plywood is formed by superimposing and adhering a plurality of thin plate-like colored veneers in the grain direction so as to coincide with each other, and a fine groove is formed on one surface of the plywood along the grain direction. A method for manufacturing a pencil, comprising: inserting two pencil plates into a narrow groove, bonding the two together, and sandwiching them together, and then cutting and finishing the outer shape into a rod shape. 2. A thin veneer is placed in a pressure vessel together with a dyeing solution and is pressurized and depressurized to allow the dyeing solution to penetrate into the veneer to form a colored veneer of a desired color dyed inside the tissue. The method for producing a pencil according to claim 1, wherein a plywood is formed by polymerizing and adhering a plurality of different colored veneers of different colors.