JPH07313370A - Handle for cooker - Google Patents

Abstract

PURPOSE:To provide a handle for a cooker which can visually inform a user of being heated at a high temperature. CONSTITUTION:A peeling layer 4 is formed using a peeling ink by a screen printing on the entire surface of a die releasing base body sheet and a thermosensitive discoloring layer 2 is formed on the entire surface of the peeling layer 4 by a screen printing using a black thermosensitive discoloring ink that vanishes in color by heating it up to 60 deg.C. Then, a non-discoloring layer 3 is formed on the thermosensitive discoloring layer 2 by a screen printing using a red non-discoloring ink to indicate a warning against overheating 'HOT !!' and an adhesive layer 5 is formed entirely on the thermosensitive discoloring layer 2 and the non-discoloring layer 3 using an adhesive ink by a gravure printing to obtain a transfer material. The transfer material thus obtained is laminated with the adhesive layer 5 side thereof facing the surface of a dark gray handle 1 for a cooker, and then, bonded on the handle 1 for the cooker by heating and pressurizing it with a silicone rubber transfer pad from the side of the base body sheet of the transfer material and base body sheet is peeled off to provide a thermal discoloring layer on the surface of the handle 1 for the cooker.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooker handle attached to a container of a cooker such as a pan or a frying pan.

[0002]

2. Description of the Related Art Conventionally, a cooker such as a pot or a frying pan that is heated to a high temperature may be accidentally touched and burned. As a solution to this problem, JP-A-2-279
As shown in Japanese Patent Laid-Open No. 111, the cooker 7 has a temperature-sensitive discoloring layer that discolors when reaching a specific temperature and the discoloring action is reversible.
Some are provided on the outer peripheral surface of the container 6 (see FIG. 7).
By providing the temperature-sensitive discoloration layer, the container 6 discolors when it reaches the overheated region (see FIG. 8), and visually cautions.

[0003]

However, Japanese Patent Laid-Open No. 2-2
In the invention described in Japanese Patent Publication No. 79111, the temperature-sensitive discoloration layer is not provided on the cooker handle attached to the cooker. Therefore, even if the temperature of the cooker handle reaches the dangerous overheat region, the cooker handle is not discolored. It is rare to accidentally touch the container in the first place, and in fact,
In many cases, the handle of the cooker that is overheated due to the necessity of moving the cooker is held by the hand. And since the cooker body is made of metal, it heats up by heating, but there is a preconception that the handle for the cooker does not get hot because it is made of resin or wood with low thermal conductivity, and hesitantly grips the handle. . In addition, since the handle for the cooker has low thermal conductivity,
Once it becomes hot, it is hard to cool, and the metal part of the container may be hot even after it has cooled. In such a case, the cooker may get burned due to the temperature of the cooker handle reaching the overheated area, or the cooker may be overwhelmed by the cook because the cooker handle is heated above the expected temperature. You may get burned due to turning over the vessel. That is, even if the container is provided with a temperature-sensitive color changing layer as in the invention described in JP-A-2-279111, it is not useful.

Therefore, the object of the present invention is to solve the above problems, to solve the problem of getting burned due to the grip of the cooker handle heated to a high temperature, and to confirm that the product is heated to a high temperature. The purpose is to provide a handle for the cooking device that conveys the message.

[0005]

DISCLOSURE OF THE INVENTION The cooker handle of the present invention has a temperature-sensitive color-changing layer provided on its surface, which discolors when it reaches an overheated region and whose color-changing action is reversible.

In the above structure, the non-color-changing layer is provided between the surface of the handle and the temperature-sensitive color changing layer in a pattern indicating an overheat warning, and when the temperature reaches the overheated area, the temperature-sensitive color changing layer hides the non-color-changing layer. May be changed to colorless.

In the above construction, the temperature-sensitive color-changing layer or the non-color-changing layer provided on the surface of the handle for the cooking device may be a transfer layer.

The present invention will be described in more detail with reference to the drawings.

FIG. 1 is a sectional view showing an embodiment of the cooker handle according to the present invention, and FIGS. 2 and 5 and 6 are sectional views showing another embodiment of the cooker handle according to the present invention. FIG. 4 is a perspective view showing an embodiment of the handle for a cooking device according to the present invention. In the figure, 1 is a handle for a cooking device, 2 is a temperature-sensitive discoloration layer, 3
Indicates a non-color-changing layer, 4 indicates a peeling layer, and 5 indicates an adhesive layer.

The cooker handle 1 is attached to hold a cooker such as a pan or a frying pan in a hand. For example, a bow-shaped or semicircular "vine" or stew hung on the upper part of a container such as a pan or a kettle. There are ear-shaped “ears” that are provided so as to face the side of a container such as a pan, and “stems” that project from the side of a container such as a frying pan. As the material of the cooker handle 1, a material having low thermal conductivity such as wood or resin, or a material having a low thermal conductivity covering a metal such as iron or aluminum is used.

The temperature-sensitive color changing layer 2 uses a temperature-sensitive color-changing ink containing a temperature-sensitive color-changing material, which changes color when reaching an overheated region and has a reversible color-changing action, in a binder, and is used for gravure printing, screen printing, etc. It is provided on the surface of the cooking handle 1 by a normal printing method or a coating method such as roll coating (see FIG. 1). The overheated region refers to a temperature of 60 degrees Celsius or more even at the lowest. The temperature-sensitive discoloration layer 2 may be partially provided, and it may be a pattern such as letters and symbols representing an overheat warning. Further, the color density of the temperature-sensitive color changing layer is set by the ratio of the temperature-sensitive color changing material contained in the binder and the film thickness. As a binder for temperature-sensitive discoloration ink, vinyl chloride vinyl acetate copolymer resin, polyamide resin, polyester resin, thermoplastic urethane resin, methacrylic resin, polyvinyl acetal resin, acrylic ester resin, chlorinated rubber A thermoplastic resin such as a system resin, a chlorinated polyethylene resin, or a chlorinated polypropylene resin is used. As the temperature-sensitive discoloration material, the following (1) to (3)
And so on.

(1) It is composed of two components, an electron-donating compound (coloring organic compound such as fluorane and lactone) and an electron-accepting compound (gallate ester, etc.), and takes a dye structure at a temperature lower than the color change temperature. An organic temperature-sensitive discoloring material that is colored and has a leuco structure at a temperature higher than the discoloring temperature and is colorless and microencapsulated.

(2) A liquid crystal temperature-sensitive color-changing material having a plurality of color-changing temperatures and continuously changing colors in response to temperature changes, in which cholesteric liquid crystals, nematic liquid crystals, etc. are microencapsulated.

(3) Crystal type transition (physical change) using a metal complex salt of silver iodide, cobalt, nickel or the like as a main pigment.
Metal complex salt thermosensitive color changing material that changes color depending on.

A layer other than the temperature-sensitive discoloration layer 2 may be provided on the surface of the cooker handle 1. For example, a non-color-changing layer 3 is provided between the surface of the cooker handle 1 and the temperature-sensitive discoloration layer 2 in a pattern such as letters or symbols indicating an overheat warning (see FIG. 2), and the temperature of the cooker handle 1 is in the overheat region. When reaching the temperature-sensitive discoloration layer 2
Changes from the color hiding the non-color-changing layer 3 (see FIG. 3) to colorless (see FIG. 4).

The non-color-changing layer 3 is formed by a usual printing method such as gravure printing or screen printing using a printing ink containing a usual dye or pigment in a binder. However,
Since the residual solvent in the non-color-changing layer 3 may deteriorate the function of the temperature-sensitive color-changing layer 2, it is preferable to use an ink containing no solvent or non-polar solvent as much as possible. As the binder, vinyl chloride vinyl acetate copolymer resin, polyamide resin, polyester resin, thermoplastic urethane resin, methacrylic resin, polyvinyl acetal resin, acrylic ester resin, chlorinated rubber resin, chlorinated polyethylene The same thermoplastic resin as that used for the temperature-sensitive color changing layer is used, such as a system resin and a chlorinated polypropylene resin.

When the non-color-changing layer 3 is provided between the surface of the cooker handle 1 and the temperature-sensitive color changing layer 2 as described above, the temperature-sensitive color changing layer 2 is a color that hides the non-color-changing layer in the overheating region. Need to change from colorless to colorless. Therefore, it is preferable to use a temperature-sensitive color-changing ink containing an organic temperature-sensitive color-changing material in a binder.

Each layer provided on the surface of the cooker handle 1 may be directly formed on the cooker handle 1 by a printing method or a coating method as described above, or formed as a transfer layer by a transfer method. Alternatively (see FIGS. 5 and 6). The transfer method is a method in which a transfer material including a release layer 4, a pattern layer (in the present invention, the temperature-sensitive discoloration layer 2 and the non-discoloration layer 3), an adhesive layer 5 and the like is formed on a base sheet and heated. This is a method of applying pressure to bring the transfer layer into close contact with the transferred material, peeling the base sheet, and transferring only the transfer layer to the surface of the transferred material for decoration, which often has a three-dimensional curved surface. Suitable for the cooker handle 1. Further, when the transfer target is a resin molded product, there is a molding simultaneous transfer method as a more rational method for performing the transfer method. Simultaneous molding transfer method is to insert the transfer material in a molding die, inject and fill the cavity with resin, and cool it to obtain a resin molded product, and at the same time, bond the transfer material to the surface of the base sheet. Is peeled off, and the transfer layer is transferred to the surface of the transferred material for decoration.

The transfer material used for forming the transfer layer will be described below.

As the material of the base sheet, a resin sheet of polypropylene resin, polyethylene resin, polyamide resin, polyester resin, polyacrylic resin, polyvinyl chloride resin, etc., metal foil such as aluminum foil, copper foil, etc. It is possible to use those used as a base sheet for a normal transfer material, such as a glassine paper, a coated paper, a cellulosic sheet such as cellophane, or a composite of the above sheets. Further, in order to improve the releasability of the transfer layer from these base sheets, when the base sheet is peeled off after the transfer or after the simultaneous transfer of molding, a release layer for releasing the transfer layer together with the base sheet is entirely formed. You may.
The material of the release layer, melamine resin-based release agent, silicone resin-based release agent, fluororesin-based release agent, cellulose derivative-based release agent, urea resin-based release agent, polyolefin resin-based release agent, A paraffin-based release agent and a composite release agent of these may be used. Examples of the method for forming the release layer include ordinary printing methods such as gravure printing and screen printing, and coating methods such as roll coating.

The release layer 4 is wholly or partially formed on the base sheet or the release layer. The peeling layer 4 is a layer which becomes the outermost surface of the transferred object when peeled from the base sheet or the release layer when the base sheet is peeled after the transfer or the molding simultaneous transfer. Examples of the material of the release layer 4 include polyacrylic resin, polyester resin, polyvinyl chloride resin, cellulose resin, rubber resin, polyurethane resin, polyvinyl acetate resin, and vinyl chloride vinyl acetate copolymer. Copolymers such as a system resin and an ethylene-vinyl acetate copolymer system resin may be used. Further, since the cooker handle is also washed when cleaning the cooker, the cooker handle is required to have surface hardness. Therefore, it is preferable to select and use a photocurable resin such as an ultraviolet curable resin, a radiation curable resin such as an electron beam curable resin, or a thermosetting resin as the release layer 4. As a method for forming the release layer 4, there are a usual printing method such as gravure printing and screen printing, and a coating method such as roll coating. Alternatively, the release layer 4 may be omitted and the base sheet made of a transparent material may be left without being released.

As described above, the temperature-sensitive color-changing layer 2 uses a temperature-sensitive color-changing ink containing a temperature-sensitive color-changing material that changes color when reaching an overheated region and has a reversible color-changing action in a binder.
It is formed by an ordinary printing method such as gravure printing or screen printing or a coating method such as roll coating.

As described above, the non-color-change layer 3 is formed by a usual printing method such as gravure printing or screen printing using a printing ink containing a usual dye or pigment in a binder.

The adhesive layer 5 adheres the above layers to the surface of the transferred material. As the adhesive layer 5, a heat-sensitive or pressure-sensitive resin suitable for the material of the transferred material is appropriately used.
For example, when the material to be transferred is polyacrylic resin, polyacrylic resin may be used. When the material to be transferred is a polyphenylene oxide / polystyrene resin, a polycarbonate resin, a styrene copolymer resin, or a polystyrene blend resin, a polyacrylic resin having a compatibility with these resins, a polystyrene resin, A polyamide resin or the like may be used. Further, when the material to be transferred is polypropylene resin, chlorinated polyolefin resin, chlorinated ethylene-vinyl acetate copolymer resin, cyclized rubber, and coumarone indene resin can be used. As a method for forming the adhesive layer 5, there are a usual printing method such as gravure printing and screen printing, and a coating method such as roll coating. The adhesive layer 5 can be omitted when the temperature-sensitive color-changing layer 2 and the non-color-changing layer 3 are made of materials having excellent adhesiveness to the transferred material.

[0025]

The handle for a cooker according to the present invention has the above-described structure, and therefore has the following action.

That is, a temperature-sensitive discoloration layer that discolors when it reaches the overheated region and that the discoloring action is reversible is provided on the surface of the handle for the cooking device.

Therefore, it is possible to give the cook a visual warning that he is heated to a high temperature.

[0028]

【Example】

Example 1 A thermosensitive color-changing layer was screen-printed on a vine surface of a pot made of a dark gray phenol resin by using a thermosensitive color-changing ink, Daisen Seika Chemical Co., Ltd., which is an orange color that disappears when heated to 60 degrees Celsius. Was formed on the entire surface.

When heat treatment was performed using this pot, the pot vine, which was dark orange at room temperature, turned dark gray at 60 ° C. or higher. So, I used the pot holder to hold the pot vine and moved the pot.

Example 2 First, a release layer was formed on the entire surface by screen printing using the following release ink on a releasable substrate sheet made of a polyethylene terephthalate film. Next, a temperature-sensitive color-changing layer was formed on the entire surface by screen printing using the following black color-color-sensitive color-changing ink which was decolored when heated to 60 ° C. on the release layer. Next, the following non-color-changing red ink was used on the temperature-sensitive color-changing layer to form a non-color-changing layer that displays an overheat warning "HOT !!" by screen printing. Finally, an adhesive layer was formed on the entire surface by gravure printing using the following adhesive ink on the temperature-sensitive color-change layer and the non-color-change layer to obtain a transfer material.

1. Release ink Binder Mitsubishi Rayon Co., Ltd. BR-50 25 parts by weight Diluting solvent Solvesso 150 75 parts by weight

2. Temperature-sensitive color-changing ink Dai Nippon Seika Co., Ltd. Daithermo

3. Non-discoloring ink Terikoku Ink Co., Ltd. Cericol EG

4. Adhesive ink Binder Toyon Byron RV-200 23 parts by weight Diluting solvent Solvesso 150 77 parts by weight

The transfer material obtained as described above was laminated with the adhesive layer side facing the handle surface of a frying pan made of dark gray phenolic resin, and then the transfer material base sheet side was made of silicone rubber. A thermosensitive color-changing layer was provided on the pattern surface of the frying pan by heating and pressurizing with a transfer pad to adhere it to the pattern of the frying pan and peeling off the base sheet.

When heat treatment was carried out using this frying pan, the handle of the frying pan, for which no overheat warning display was visible at room temperature, showed a red overheat warning display "HOT !!" above 60 degrees Celsius. . Therefore, wait until the red overheat warning display "HOT !!" on the frying pan pattern disappears, and then
I took the frying pan and transferred the dish to the plate.

[0037]

EFFECTS OF THE INVENTION Since the handle for a cooking device of the present invention has the above-described structure and operation, the following effects can be obtained.

That is, the cook is given a visual warning that the temperature of the cooker handle has reached the overheated region, and he should be careful to handle it because the temperature of the cooker handle is in the overheated region. Can be made.

Therefore, the cook does not have the risk of being burned by holding the cooker handle that reaches the overheated region, and may be surprised by the heat when he grasps the cooker handle that reaches the overheated region. Absent.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a handle for a cooking device according to the present invention.

FIG. 2 is a cross-sectional view showing another embodiment of the handle for a cooker according to the present invention.

FIG. 3 is a perspective view showing an embodiment of a handle for a cooking device according to the present invention.

FIG. 4 is a perspective view showing an embodiment of a handle for a cooking device according to the present invention.

FIG. 5 is a cross-sectional view showing another embodiment of the cooker handle according to the present invention.

FIG. 6 is a cross-sectional view showing another embodiment of the cooker handle according to the present invention.

FIG. 7 is a perspective view showing a conventional cooking device in which a temperature-sensitive color changing layer is provided in a container.

FIG. 8 is a perspective view showing a conventional cooking device in which a temperature-sensitive color changing layer is provided in a container.

[Explanation of symbols]

 1 Handle for cooking device 2 Temperature-sensitive discoloration layer 3 Non-discoloration layer 4 Release layer 5 Adhesive layer 6 Container 7 Cooking device

Claims (3)

[Claims] 1. A handle for a cooker, which is provided with a temperature-sensitive discoloration layer on its surface, which discolors when it reaches an overheated region and whose color changing action is reversible. 2. A non-color-changing layer is provided between the surface of the handle and the temperature-sensitive color-changing layer in a pattern indicating an overheat warning, and when the temperature reaches the overheated region, the temperature-sensitive color-changing layer changes from a color hiding the non-color-changing layer to colorless. The handle for the cooking device according to claim 1. 3. The cooker handle according to claim 1, wherein the temperature-sensitive color-changing layer or the non-color-changing layer provided on the surface of the cooker handle is a transfer layer.