JP6284810B2 - Decorative chopstick manufacturing method and decorative chopsticks patterned by the method - Google Patents

Description

  The present invention relates to a chopstick used for eating, and more particularly to a method of manufacturing a decorative chopstick and a decorative chopstick patterned by the method.

In Japan, chopsticks have traditionally been used for meals since ancient times, and in recent years many types of chopsticks have been put on the market due to diversification.
At present, decorative chopsticks are popular among many generations, including adults and children, and the taste has changed from the traditional rustic pattern to the splendid pattern.

By the way, wood, lamin, bamboo, maras, iron wood, plastic, etc. are mainly used as chopsticks. Coloring and decorating treatments are applied to take advantage of the characteristics of these materials. ing.
In such decoration processing, there is a method of applying paint to the surface of chopsticks, but recently, a decoration method using a printing film has been adopted.

For example, there is a method in which a heat-shrinkable resin film cylinder and a shrink film cylinder on which a pattern is printed as shown in Patent Document 1 and Patent Document 2 are heated and contracted and placed on chopsticks.
According to this, if it is the pattern printed on the resin film cylinder and the shrink film cylinder, there is an advantage that the pattern can be easily applied to the surface of the chopsticks.

Further, as a further development of the above decoration method, a method of applying a pattern using a plurality of divided tube films that are thermally contracted as shown in Patent Document 3 has been developed.
Since there is a pattern layer exposed in the space between the divided tubular films, a complicated combination pattern is possible, which is extremely useful.

Japanese Utility Model Publication No. 49-37276 JP-A-10-108776 JP 2012-5550 A

However, since the above-described method for applying decoration to the chopsticks is based on a pattern printed on a shrink film cylinder, a so-called three-dimensional pattern cannot be expected.
In addition, there is no one that imparts three-dimensionality to a combination pattern of printing and paint, and a method for producing the same has not been provided.

The present invention has been made against this background.
That is, an object of the present invention is to provide a method for manufacturing decorative chopsticks in which three-dimensionality is imparted to a combination pattern by printing and paint, and to provide a chopstick on which a pattern is formed by the method.

  Against the background as described above, as a result of intensive efforts, the present inventors heated the shrink film tube to the material chopsticks and fixed them by pressure, and then applied the paint to the portions other than the recesses of the material chopsticks. The present inventors have found that the above problems can be solved, and have completed the present invention based on the findings.

That is, this invention exists in the manufacturing method of the decorative chopsticks which consists of (1) and the following processes 1-4.
1) a step of forming a recess in the material chopsticks 1;
2) a positioning step of positioning the shrink film cylinder 2 having heat shrinkage on the material chopsticks 1 having the recesses;
3) A step of heating and shrink-bonding the shrink film cylinder 2 to the material chopsticks 1 formed with the recesses,
4) A coating process in which the shrink film cylinder 2 is heated and pressure-fixed to the material chopsticks 1 and then a paint is applied to the portion excluding the recess 11.

That is, according to the present invention, the application in the application steps (2) and (4) is performed by rolling the material chopsticks 1 on the cloth material F to which the paint is applied. Lies in the manufacturing method.

That is, according to the present invention, the application in the application step (3) and 4) is performed by rolling the material chopsticks 1 on the cloth material F to which the paint is applied, and then the paint is further applied. The manufacturing method of the decorative chopsticks according to the above (1), wherein a protruding line is formed by contacting the end of the shrink film cylinder 2 to which the thread body is pressure-bonded.

  That is, the present invention resides in (4) the method for manufacturing a decorative chopstick according to (1), wherein the concave portion 11 includes a large number of small concave portions 11 formed continuously in the length direction of the chopstick.

  That is, the present invention resides in (5) the method for manufacturing a decorative chopstick according to (1) above, wherein the material chopstick 1 has a square cross section.

  That is, the present invention resides in the decorative chopsticks to which a pattern is given by the method for manufacturing decorative chopsticks according to any one of (6) and (1) to (5) above.

  In addition, as long as the objective of this invention is met, the structure which combined the said invention suitably can also be employ | adopted.

According to the present invention, a combination pattern by printing and paint can be given, and the appearing pattern is also rich in three-dimensionality.
In addition, the process of applying the paint can be performed very efficiently, that is, a pattern by the paint is easily applied on the shrink film cylinder.
It is extremely efficient as a chopstick manufacturing method.
The boundary portion between the concave portion formed on the chopsticks and the other region is covered with the shrink film cylinder so that it becomes smooth and does not have a sharp corner.
The process of polishing the material chopsticks 1 is not necessarily required.

FIG. 1 is a block diagram showing steps in a method for manufacturing decorative chopsticks. FIG. 2 is a diagram showing the material chopsticks in a state where no recess is formed. FIG. 3 is a diagram showing the material chopsticks in a state after the recesses are formed. FIG. 4 is a view showing a shrink film cylinder. FIG. 5 is a view showing a state in the middle of inserting the shrink film tube into the material chopsticks. FIG. 6 is a view showing a state where the shrink film cylinder is inserted and positioned in the material chopsticks. FIG. 7 is a view showing a state in which the shrink film cylinder is crimped and fixed onto the material chopsticks by heat shrinkage. FIG. 8 is an explanatory view schematically showing an operation of applying a paint of a cloth material onto a shrink film cylinder of a material chopsticks. FIG. 9 is a diagram illustrating a state in which a paint is applied on the shrink film cylinder. FIG. 10 shows a state in which the cloth material is divided and A color is included in one area and B color is included in another area. FIG. 11 is an explanatory diagram schematically showing an operation of applying a horizontal line by bringing a chopstick into contact with a thread material held in a stretched state and rotating it. FIG. 12 is a diagram showing the material chopsticks in a state where the horizontal lines are applied and formed. FIG. 13 is an explanatory view schematically showing an operation of applying a horizontal line by rotating the material chopsticks in contact with the three stretched yarn materials. FIG. 14 is a diagram showing the material chopsticks in a state where three horizontal lines are applied and formed.

[First Embodiment]
In the following, an optimal example for carrying out the invention will be described based on the drawings.
The manufacturing method of the decorative chopsticks of the present invention includes the following main steps (1 to 4).
(1) forming a recess 11 in the material chopsticks 1;
(2) a positioning step for positioning the shrink film cylinder 2 having heat shrinkage on the material chopsticks 1 formed with the recesses 11;
(3) A step of heating and shrink-bonding the shrink film cylinder 2 to the material chopsticks 1 in which the recess 11 is formed,
(4) An application step in which the shrink film cylinder 2 is heated and crimped and fixed to the material chopsticks 1 and then a coating is applied to the portion excluding the recess 11.

In the following, the method for manufacturing decorative chopsticks will be described in detail.
FIG. 1 is a block diagram showing steps in the manufacturing method.
(1) Preparation of material chopsticks 1 First, material chopsticks 1 are prepared by cutting wood into a product shape in advance.
The material chopsticks 1 used at this time are not particularly limited, but mainly wood such as iron wood, lamin, bamboo, and maras is used.

FIG. 2 is a diagram showing the material chopsticks 1 in a state where the recess 11 is not yet formed.
(2) Concave formation process Next, the process for forming the recessed part 11 in the raw chopsticks 1 is performed.
In this case, in the case of wood, cutting is mainly employed. However, the recess 11 is composed of small recesses 11 that are isolated at intervals, and is formed in succession in the length direction of the chopsticks. Examples thereof include those composed of small concave portions 11 and those composed of concave portions 11 that are linear in the length direction of chopsticks.

FIG. 3 is a diagram showing the material chopsticks 1A in a state after the recess 11 is formed.
In this figure, a diamond-shaped concave portion 11 is regularly formed around the chopsticks in the length direction of the chopsticks.
(3) Positioning step This step is a positioning step in which the shrink film cylinder 2 is set at a certain position in the length direction of the material chopsticks 1A.

Here, FIG. 4 is a view showing the shrink film cylinder 2.
The shrink film cylinder 2 is colored or transparent and has a printed pattern (including characters) on which the material chopsticks 1A can be inserted.
The material includes vinyl chloride, OPS (polystyrene), polyethylene terephthalate, polypropylene, and the like.
After forming the recess 11 in the previous step, the shrink film cylinder 2 is extrapolated so as to cover the recess 11 formed in the material chopsticks 1 and positioned.

  FIG. 5 is a diagram showing a state in the middle of inserting the shrink film cylinder 2 into the material chopsticks 1A.

FIG. 6 is a view showing a state in which the shrink film cylinder 2 is inserted and positioned in the material chopsticks 1A.
In this case, the shrink film cylinder 2 is long enough to cover at least the region of the recess 11 formed in the above-described process.

(4) Crimping and fixing step This step is a step of crimping and fixing the shrink film cylinder 2 to the material chopsticks 1A in which the recesses 11 are formed.
As an operation, the material chopsticks 1A with the shrink film tube 2 inserted thereon are heated by an appropriate method, for example, the shrink film tube 2 is contracted to reduce the diameter.
As a result, the shrink film cylinder 2 is pressure-bonded and fixed onto the surface of the material chopsticks 1A provided with the recesses 11 from above.

FIG. 7 is a view showing a state (the material chopsticks 1B) in which the shrink film cylinder 2 is pressure-bonded and fixed on the material chopsticks 1A having the recesses by heat shrinkage.
Any heating method can be used as long as the shrink film cylinder 2 can be compressed and fixed with sufficient force. However, the temperature can be easily adjusted and the entire material chopsticks can be heated evenly. From the viewpoint that the setting of the heating time is easy, it is preferable to heat in the electric heating chamber.

The shrinkage of the shrink film cylinder 2 due to heat and covering the material chopsticks 1A hides the roughness of the surface of the material chopsticks 1A, and the boundary between the recess 11 and other regions does not become sharp and is in a smooth state. Become.
In this case, the diameter L1 of the shrink film cylinder 2 can be surely pressed against the bottom surface of the recess 11 by contracting to the thickness L2 of the material chopsticks 1A.
Therefore, L2 / L1 is necessary so that the thermal contraction rate of the shrink film cylinder 2 is smaller than the diameter at the bottom surface of the recess 11 at least.

(5) Application process This process is a process of applying a coating material to the material chopsticks 1B in a state where the shrink film cylinder 2 is fixed by pressure bonding.
After the shrink film cylinder 2 is pressure-bonded and fixed, the paint is applied to the portion excluding the recess 11.
In addition to the printed pattern of the shrink film cylinder 2, paint is applied to the portion excluding the concave portion 11, so that a unique decoration in which the printed pattern and the paint pattern are combined appears.
In this case, since it is not applied to the recess 11, a specific application method that cannot be applied to the recess 11 is employed.
That is, the cloth material F containing the paint is stretched (held) in the air or placed on a flat table, and the material chopsticks 1 are rolled thereon.

FIG. 8 is an explanatory view schematically showing the operation of transferring the coating material of the fabric material F onto the shrink film cylinder 2 of the material chopsticks 1B and applying it.
As shown in the drawing, as a result of the material chopsticks 1B rolling on the cloth material F, the paint does not adhere to the recesses 11 of the material chopsticks 1B, but adheres to other portions.
Here, since the concave portion 11 is formed by, for example, shaving the first material chopsticks 1, the paint does not adhere to the uncut portion of the material chopsticks 1 with a large diameter.

FIG. 9 is a diagram showing a state in which a paint is applied on the shrink film cylinder 2 of the material chopsticks 1B.
By rolling the material chopsticks 1B, the paint is applied only to the portion in contact with the cloth, so that the pattern is efficiently formed.
After the paint is applied, the material chopsticks 1C appear a unique three-dimensional pattern in which the printed pattern of the shrink film cylinder 2 and the pattern by application are combined.
Here, by uniformly including the same color paint on the entire surface of the fabric material F, the same color as the fabric material F can be applied to the portion excluding the concave portion 11, but the portion is not necessarily the same color on the entire surface. It is also possible to include different colors.

FIG. 10 shows a state in which the cloth material F is divided and the A color is included in one area and the B color is included in another area.
For example, by dividing the fabric material F and including A color in one area and B color in another area, the A color and the B color are applied to the chopsticks except for the recess 11. be able to.
The cloth material F used in this step may be any material that can contain paint, and in addition to a thin film, a sponge, a foamed resin material, a felt fabric, a knitted fabric, a woven fabric, and the like are employed.

The types of paints to be applied are, for example, epoxy-based, urethane-based, phenol-based, acrylic-based (for example, acrylic urethane, acrylic epoxy, acrylic lacquer), polyester-based (for example, polyester urethane), moisture-cured urethane-based, fluororesin-based, A lacquer-based resin paint, lacquer, or the like is employed, and a polyester-based resin paint is preferable from the viewpoint of high adhesive strength and good water resistance.
After the coating process, the paint is solidified by drying.

[Second Embodiment]
In the coating process of the first embodiment described above, further coating can be performed.
That is, in the coating step, the horizontal line L can be formed by bringing the yarn material S to which the paint is further applied into contact with the material chopsticks 1C to which the paint is applied to the portion excluding the concave portion 11.

For example, in order to apply the horizontal line L to the material chopsticks 1C, the thread material S containing the paint is held in a stretched state, and the chopsticks are brought into contact with the chopsticks and rotated.
Then, the coating material of the thread material S is transferred to the chopsticks and a horizontal line L (ring-shaped line) is formed.
When the thread material S is brought into contact with the vicinity of both ends of the shrink film cylinder 2 which is fixed by pressure bonding, a horizontal line L is formed at that portion.

FIG. 11 is an explanatory diagram schematically showing an operation of applying a horizontal line L by rotating a chopsticks in contact with the thread material S held in a stretched state.
The yarn material S may be any material that can contain paint, and monofilament yarn, crimped yarn made of multifilament, spun yarn, or the like can be employed.
In this case, a plurality of horizontal lines L can be formed at a time by holding a plurality of yarn materials S in a stretched state.

FIG. 12 is a diagram showing the material chopsticks 1D with the horizontal lines L applied and formed.
Horizontal lines L are applied and formed near both ends of the shrink film cylinder 2.
By the way, by placing a plurality of thread materials S in a stretched state and bringing the material chopsticks 1C into contact with each thread material S and rotating, the material chopsticks 1D on which a plurality of horizontal lines L are applied are formed.

  FIG. 13 is an explanatory diagram schematically showing an operation of applying the horizontal line L by rotating the material chopsticks 1C in contact with the three thread materials S in a stretched state.

  FIG. 14 is a diagram showing the material chopsticks 1D with three horizontal lines L applied and formed.

(6) Drying process After applying the paint, the paint is left to stand for 24 hours or more to dry and solidify.
Once the resin paint is completely dry, the production of the decorated chopsticks is finished.
As described above, the material chopsticks 1 → the material chopsticks 1A formed with the recesses → the material chopsticks 1B with the shrink film cylinder 2 fixed by pressure → the material chopsticks 1C with the paint applied to the area other than the recesses → the horizontal line L The coated chopsticks 1D are formed and finally dried to become chopsticks.
The manufacturing efficiency is good, and the manufactured chopsticks also have a unique three-dimensional pattern that combines the printed pattern of the shrink film cylinder 2 and the pattern by application.

Although the present invention has been described above, the present invention is not limited to the embodiments and can be modified as long as the object is met.
For example, after the coating process is completed, post-processing (finishing transparent resin coating or the like) can be appropriately performed as necessary.
Moreover, although drying is performed by drying in a drying room or leaving it for several hours, it does not limit which method is used.
In addition, as a method of forming the concave portion 11, in the case of wooden, besides the above-described method by cutting, press deformation processing can also be adopted, and in this case, it is preferably performed in a heated state containing water.

In the method of applying a chopstick pattern according to the present invention, after the shrink film cylinder 2 is heated and pressure-fixed to the material chopsticks 1, the coating is applied to the portion excluding the concave portion 11. This coating process is performed very efficiently.
Therefore, it is widely applicable and useful for applying paint to portions other than the recess 11 with respect to the chopsticks.
In addition, a unique three-dimensional pattern in which the printed pattern of the shrink film cylinder 2 and the pattern by application can be combined can appear.

1, 1A, 1B, 1C, 1D ... material chopsticks 11 ... concave 2 ... shrink film cylinder 3 ... paint F ... cloth material S ... thread material L ... horizontal line

Claims (6)

A method for producing decorative chopsticks comprising the following steps 1 to 4.
1) Process of forming a recess in the material chopsticks,
2) Positioning step of positioning a shrink film cylinder having heat shrinkage on the material chopsticks having a recess,
3) heating and shrinking the shrink film cylinder to the material chopsticks having the recesses;
4) An application process in which the shrink film cylinder is heated and fixed to the material chopsticks by pressure and then the paint is applied to the portions excluding the recesses. 2. The method of manufacturing decorative chopsticks according to claim 1, wherein the application in the application step 4) is performed by rolling the material chopsticks on the cloth material to which the paint is applied. The application in the application step 4) is performed by rolling the material chopsticks on the cloth material to which the paint is applied , and then the end of the shrink film cylinder to which the yarn body to which the paint is applied is further crimped. 2. The method for manufacturing decorative chopsticks according to claim 1, wherein a protruding line is formed by contacting the chopsticks.   2. The method for manufacturing a decorative chopstick according to claim 1, wherein the concave portion includes a plurality of small concave portions formed continuously in the length direction of the chopsticks.   2. The method for producing decorative chopsticks according to claim 1, wherein the material chopsticks have a square cross section. A decorative chopsticks provided with a pattern by the method for manufacturing decorative chopsticks according to any one of claims 1 to 5 .

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