JPH0374719B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a composition suitable for cleaning baking molds for baked confectionery on which carbide (referring to burnt scum) has adhered, and a method for using the same. be.

Prior art and its problems In baked confectionery, especially those that use so-called aqueous molds, such as gaufres and wafers, carbide inevitably sticks to the mold. Therefore, if the product is used repeatedly without removing it, the degree of baking of the product will vary, the quality will not be constant, and the appearance of the product will become dirty. Therefore, it is necessary to periodically clean the baking mold to remove carbides.

Conventionally, as a cleaning composition for such baking molds, a composition with a high concentration of strong alkali has been used, which is reacted with carbide at high temperature to remove it. However, according to this, in terms of work,
Not only is it dangerous to the human body, but it is also difficult to dispose of the waste liquid, and its highly corrosive nature makes it easy to cause accidents that damage treatment facilities, and additional costs are required for neutralization treatment. There were some issues, such as:

In addition, in continuous mass production baking equipment,
A large number of baking molds are installed continuously on a conveyor,
Conventionally, the only way to clean these was to remove them one by one and immerse them in a cleaning solution to remove the carbide. However, since the baking mold is quite heavy, it is difficult to remove and reinstall it.
It requires manpower and time, and both work efficiency and work safety are extremely poor.

The present invention solves the above-mentioned conventional problems, particularly by reducing the alkali concentration and significantly improving work efficiency.

Means for Solving the Problems This invention is suitable for cleaning which has the effect of making the carbide stick to the baking mold and reacting with the carbide on the baking mold for a while, causing the carbide to float up from the baking mold and making it easier to remove. The present invention provides a composition that can be used to efficiently remove carbides. Each of its constituent elements will be explained below.

Strong alkaline substances are defined as such, such as sodium mercury and potassium hydroxide. In the present invention, this
~15% (wt% based on the total composition as 100%. The same applies below) is used.

The starch used in the present invention is not particularly limited, but it is preferable to use one with as high a viscosity as possible, such as potato starch or corn starch. Since starch is used in a gelatinized state, starch that has been alpha-ized from the beginning may be used. When using a material that has not been alpha-ized, it may be alpha-ized by pouring a strong alkaline substance into water and utilizing the dilution heat generated. Although the amount of starch to be used cannot be absolutely defined depending on its type and required viscosity, it may be approximately 6 to 12%.

Sodium bicarbonate is also common.
It is susceptible to thermal decomposition, so care must be taken not to overheat the cleaning composition before use. The amount used is approximately 0.1 to 0.5%.

Second invention (The invention set forth in claim 1 is called the first invention, and the invention set forth in claim 2 is called the second invention.
Prior to the explanation of (the same applies hereinafter), an outline of a general continuous firing apparatus will be explained based on the attached drawings.

The baking mold 1 basically consists of a set of a lower baking mold 2 and an upper baking mold 3, and the upper and lower baking molds are each attached to one body by mounting stands 2' and 3'. It's normal. In some cases, a core 5 may be provided to make the inside of the baked confectionery hollow. During firing, the upper mounting base 3' is fixed by the hook 4, and the upper and lower baking molds are overlapped almost in a sealed manner.
The baked confectionery is then released and taken out. A large number of such baking molds 1 are successively attached to a conveyor chain 11 driven by a motor 13. Water type is supplied by the filling machine 12 to the baking mold 1 which has moved forward in an open state, and immediately after that,
Close the baking pan. The baking mold 1 that has passed through the baking furnace 14 is opened at the baked confectionery takeout end 15,
After the contents are taken out and returned via the filling machine 12
It is a cycle of passing directly below. Opening and closing of the baking mold 1 can be performed automatically by a separate device.

In such an apparatus, the baking mold 1 is cleaned in the following manner.

First, the baking mold 1 is preheated to about 80 to 110°C, and the present composition is applied thereto. To do this, the temperature inside the baking mold must be 80 to 110℃.
Depending on the length of heating time required, the outside of the baking mold often has to be heated, for example to nearly 200°C. Of course, in the following work, as mentioned above, the baking mold 1 is moved to the conveyor chain 11.
There is no need to remove it and clean it, and it can be done while the chain 11 is operating with the chain 11 still attached. At this time, the operating speed may be reduced or accelerated when the need arises. Since the temperature of the baking mold 1 is high, the composition dries easily, so after applying it, overlap the top and bottom surfaces of the baking mold 1 to create a semi-sealed shape, and then reapply after a certain period of time to keep the inside of the baking mold dry. It is also effective to keep the composition in a wet state to maintain its effect on the carbide. Coating can be done on the side where the filling machine is installed, and in some cases, it may be applied again at the left end of the machine (the side where the baked confectionery is taken out), and the baking mold is kept closed during return to remove the carbide that has become floating at the left end of the machine. For example, it can be rubbed off with a brush. Instead of using a brush, a method such as high-pressure water jetting may be used, and there are no particular restrictions on the method. Thereafter, cleaning is completed by drying the baking mold, for example, with air. If efforts are made to keep the temperature of the baking mold after the composition has been applied at approximately 80 to 110°C, the holding time may be approximately 20 minutes or more. Therefore, the operating speed may be changed accordingly.

Actions and Effects Regarding the amount of strong alkaline agent used, that is, the concentration, if it is too low, no cleaning effect can be expected, but if it is too high, the cleaning effect will decrease. This is because the cleaning agent penetrates into the interface between the carbide and the baking mold, dissolves or decomposes the surface of the carbide that is in contact with the baking mold, and makes the carbide float slightly. It is presumed that
It is thought that if the concentration is too high, it may not penetrate well.

Starch is used to impart viscosity to the composition so that even when applied to a baking mold, it does not flow out and remains adhesive to the baking mold. The strong alkaline substance is expected to react to the carbide during the adhesion retention time, and is also expected to have an effect of preventing the composition from drying and maintaining its permeability. If starch comes into contact with a strong alkali for a long time, it will decompose into a low molecular weight substance and its viscosity will decrease, making it unsuitable as a composition, so it is best not to expose it to high temperatures for too long after preparing the composition. However, on the one hand, it seems that there are some advantages in terms of permeability and water retention if the product is decomposed to some extent and dextrin or saccharide is present.

Sodium bicarbonate is expected to promote the diffusion and permeation of the cleaning composition by utilizing its property of thermally decomposing and foaming when the cleaning composition is applied to the baking mold. Therefore, in theory, any material other than sodium bicarbonate may be used as long as it foams after being applied to the baking mold, but from a practical standpoint, no other material seems to be suitable.

In addition, when using this composition, in order to increase the reaction rate and to help the decomposition and foaming of sodium bicarbonate, it is made to act on the carbide at high temperature, but if the temperature is too high, the composition will dry out during contact with the baking mold, making it impossible to achieve the purpose of cleaning. This is because the composition can only penetrate and react with the carbide when it is in a liquid state, or it may also be due to the physical effect that the swelling and softening of the carbide caused by water promotes its floating (peeling). From this point of view, the reaction temperature is usually preferably about 80 to 110°C.

Example 1: 2 kg of corn starch was added to 23.9 kg of water and stirred and dispersed. 4 kg of sodium hydroxide was gradually added to this, and the dilution heat caused the cornstarch to gelatinize. After that, it was cooled to room temperature, and 100 g of sodium bicarbonate was added and stirred to create a uniform cleaning composition. I got it.

Part 2: Using the composition prepared in Part 1 above, it was applied to a baking mold that was still attached to a continuous wafer baking machine (Fig. 2). The honyaki mold is a cast iron,
The wafer had already been baked for about two months to form a carbide film. The baking mold 1 is roughly heated by the baking furnace 14.
The mixture was heated to 100±10° C., and the composition was liberally applied to the baking mold with a brush at the right end of the device (filling machine side). The speed of operation was adjusted so that the time required for the baking mold to return to its original position was 40 minutes. The upper and lower baking molds were closed, and when they reached the left end of the apparatus, the baking mold was once again opened and a small amount of the composition was additionally applied. The baking molds were kept closed on the return trip, and the baking molds returned to the right end of the apparatus were sequentially opened, and high-pressure water at a pressure of 200 kg/cm ² was sprayed onto the baking molds for about 1 minute, and the carbide was peeled off and removed cleanly. Concurrently, some of the baking molds were coated with a composition prepared from the present cleaning composition lacking sodium hydroxide and treated in the same manner as described above. did not peel off.

[Brief explanation of drawings]

Fig. 1: A side view showing an open state of one example of the baking mold.
FIG. 2: A front view showing an outline of an example of a continuous wafer firing apparatus.

Claims (1)

[Claims] 1. Strong alkaline substance 2-15%, starch 6-12%
and 0.1 to 0.5% sodium bicarbonate, water is added to make the composition 100%, and when the starch is not gelatinized, this is gelatinized. 2 Strong alkaline substances 2-15%, starch 6-12%
and 0.1 to 0.5% sodium bicarbonate, water is added to make it 100%, and if the starch is not gelatinized, this is gelatinized to make a cleaning composition of 80 to 0.5%.
Apply it to a baking mold heated to 110℃, hold it for more than 20 minutes,
A baking mold cleaning method characterized in that adhering carbides are removed by an appropriate auxiliary means such as a brush or high-pressure water jet.