JP2017164299A - Aluminium foil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aluminium foil keeping a design bringing in sales, and hard to generate sticking even in cooking in an overheating condition.SOLUTION: At least one surface of an aluminium foil 2 is covered by a covering material. On a covering surface covered by the covering material, there are formed a plurality of first wavy line pattern portions 6a, a plurality of second wavy line pattern portions 6b crossing each of the first wavy line pattern portions, and a processed area 10 which is positioned in a region surrounded by the first wavy line pattern portion and the second wavy line pattern portion, and to which fine processing is applied.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an aluminum foil for food cooking, and more particularly to an aluminum foil for food cooking used for cooking various foods.

2. Description of the Related Art Conventionally, in general households, food materials such as meat and fish are baked by laying aluminum foil on cooking utensils for the purpose of antifouling.
However, this method has a problem that foodstuffs stick to the aluminum foil, making it difficult to eat and the appearance of the foodstuffs worsening.

Therefore, it is required to lower the peel strength between the aluminum foil and the food so that the food such as meat and fish does not adhere.
As a method for reducing the peel strength, for example, a technique (for example, Patent Document 1) is known in which an aluminum foil used during cooking is coated with a silicone resin to lower the peel strength. In addition, a technique (for example, Patent Document 2) is known in which the design of the aluminum foil surface is improved by improving the design property by applying a lattice pattern formed by unevenness of fine processing.

JP-A-1-170431 JP 2002-346605 A

  However, even with an aluminum foil using the above-described technique, sticking of the food material may still occur when the food material is placed and cooked in an excessively heated state. Therefore, further peeling performance has been demanded.

  According to the present invention, it is possible to provide an aluminum foil that maintains a design that leads to sales and that hardly sticks even when cooked in an overheated state.

  As a result of intensive studies, the present inventor has confirmed that sticking is likely to occur in a non-processed portion where the fine processing of the aluminum foil is not performed. Furthermore, the present inventor considered that when the pattern of the lattice pattern, which is a non-processed portion, is a wavy line rather than a straight line, the force at the time of peeling the food is dispersed, and sticking of the food can be suppressed. In addition, it has been found that the above problem can be solved by making the pattern of the lattice pattern wavy.

That is, the aluminum foil of the present invention is
An aluminum foil having at least one surface coated with a covering material,
On the coated surface coated with the coating material,
A plurality of first wavy pattern portions;
A plurality of second wavy pattern portions intersecting each of the first wavy pattern portions;
A processing region that is located in a region surrounded by the first wavy line pattern portion and the second wavy line pattern portion and that has been subjected to fine processing is formed.
Thus, by making the lattice pattern on the surface of the aluminum foil wavy, the force at the time of peeling the food is dispersed, and the problem that the food is stuck to the aluminum foil can be improved.

The aluminum foil of the present invention is
A plurality of the first wavy pattern portions are arranged in parallel to each other, and a plurality of the second wavy pattern portions are arranged in parallel to each other.
Thereby, the pattern of the lattice pattern which stimulates a consumer's willingness to purchase is formed on the surface of the aluminum foil.

The aluminum foil of the present invention is
The wave heights of the first wavy line pattern part and the second wavy line pattern part are 1 mm or more, and the wave pitch of the waves constituting the first wavy line pattern part and the second wavy line pattern part is 1 / 4 or less.

  In this way, by setting the wave height to 1 mm or more, the shape of the wave is emphasized and can be differentiated from a straight line, and sticking prevention can be achieved more than when the wavy pattern portion is formed on the surface of the aluminum foil. The effect can be increased. Further, by making the wave height ¼ or less of the wave pitch, it is possible to prevent the design of the wavy pattern portion from becoming messy.

The aluminum foil of the present invention is
The interval between the first wavy pattern portions and the interval between the second wavy pattern portions are each 20 mm or more,
The thickness of the first wavy pattern portion and the thickness of the second wavy pattern portion are 0.5 mm or more and 5.0 mm or less, respectively.

  Thus, by reducing the area of the non-processed portion so that the interval between the wavy pattern portions is 20 mm or more, sticking hardly occurs on the surface of the aluminum foil. Moreover, a pattern can be easily visually recognized by making the thickness of a wavy pattern part into 0.5 mm or more. Moreover, by making thickness into 5.0 mm or less, the area of the non-processed part which occupies the surface of aluminum foil can be reduced, and peelability can be improved.

The aluminum foil of the present invention is
The interval between the first wavy pattern portions and the interval between the second wavy pattern portions are intervals that are each an integral multiple of the wave pitch.

  Thereby, the space | interval of a wavy pattern part can be interlocked with the cycle of a wave, the design of a well-balanced wavy lattice pattern can be formed, and a consumer's willingness to purchase can be further evoked.

The aluminum foil of the present invention is
The first wavy line pattern part and the second wavy line pattern part include a processed part that has been subjected to fine processing and a non-processed part that has not been subjected to fine processing.
Thereby, the area of the non-processed part which causes sticking can be reduced.

The aluminum foil of the present invention is
The processed portion is provided at an intersecting portion where the first wavy line pattern portion and the second wavy line pattern portion intersect.
Thereby, the length of the non-processed part which comprises a wavy pattern part can be parted with a suitable space | interval, and it can lead to improvement of sticking.

The aluminum foil of the present invention is
The covering material is a silicone resin.
In particular, if it is a silicone resin, the surface of the aluminum foil main body can be suitably coated.

  According to the present invention, it is possible to provide an aluminum foil that maintains a design that leads to sales and that hardly sticks even when cooked in an overheated state.

It is a top view which shows the aluminum foil which concerns on Example 1 of embodiment. It is explanatory drawing explaining the wave pitch and wave height of the wavy pattern part which concerns on embodiment. It is a top view which shows the aluminum foil which concerns on Example 2 of embodiment. It is a top view which shows the aluminum foil which concerns on Example 3 of embodiment. It is a top view which shows the aluminum foil which concerns on Example 4 of embodiment. It is a top view which shows the aluminum foil which concerns on a comparative example.

  Hereinafter, an aluminum foil according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a view showing the surface of the aluminum foil of the present invention. As shown in FIG. 1, the aluminum foil 2 is composed of an aluminum foil body 4 and a silicone resin (not shown) that is a covering material that covers the surface of the aluminum foil body 4. The surface of the aluminum foil 2 is given a design formed by micromachining. Hereinafter, each element which comprises the aluminum foil 2 is explained in full detail.

[1] Aluminum foil body 4
Although the raw material of the aluminum foil main body 4 is not specifically limited, IN30, 1100, 8021, 8079 etc. which are prescribed | regulated to JIS can be used.
The thickness of the aluminum foil body 4 is preferably 10 μm or more and 20 μm or less. By making the thickness of the aluminum foil body 4 10 μm or more, tearing during cooking can be made difficult to occur, and by making the thickness of the aluminum foil body 4 20 μm or less, the aluminum foil 2 can be easily cut. .

[2] Silicone resin The coating of the surface of the aluminum foil body 4 is formed by applying a silicone resin and performing a treatment. As the silicone resin, any silicone resin that can be coated can be used without any particular limitation. For example, polydimethylsiloxane, polyphenylmethylsiloxane, polyalkylalkenylsiloxane, polyalkylhydrogensiloxane and the like can be preferably exemplified. These may be used alone or in combination of two or more.

Moreover, you may use together coupling agents, such as a silane coupling agent, as needed. The surface of the aluminum foil main body 4 may be previously treated with a coupling agent, or may be added to and mixed with a silicone resin. The silicone resin is usually dissolved in a solvent and coated on the aluminum foil body 4. Not limited to the coating amount, but is preferably 0.05 g / m ² or more 0.8 g / m ² or less solids. Coating amount can improve the peelability by a solid content 0.05 g / m ² or more, stickiness due to the silicone resin is felt by the 0.8 g / m ² or less coating amount in solid content Disappear. After coating, it is cured by hot air drying. The drying temperature is usually 100 ° C. or higher, preferably 140 to 170 ° C. The application may be performed on both sides of the aluminum foil body 4 or only on one side, and when applied only on one side, it may be a glossy surface or a matte surface. In what form the silicone resin is applied to which surface of the aluminum foil body 4 is selected as necessary.

[3] Micromachining Although micromachining is not particularly limited, it is preferably performed by embossing. By performing embossing, irregularities are formed on the surface of the aluminum foil 2 covered with the silicone resin. Here, the embossing method may be a known method such as embossing the aluminum foil 2 using an embossing roll. In view of the uniform formation of the thickness of the laminated resin, it is more preferable that the embossing is performed after the silicone resin is once applied to the aluminum foil body 4.
The embossed portion is represented in white in the aluminum foil 2 in the drawings of this specification.

  Moreover, it is preferable that the uneven | corrugated depth formed by embossing is 5 micrometers or more and 30 micrometers or less. When the embossing depth is 5 μm or more, the embossing can be easily seen, and when the embossing depth is 30 μm or less, the strength of the aluminum foil 2 can be increased.

[4] Design By performing the fine processing described above, various designs can be formed on the surface of the aluminum foil 2 coated with the silicone resin. For example, as shown in FIG. 1, a lattice pattern design can be formed. The design is preferably displayed over the entire aluminum foil 2. Thereby, it can be made easy to recognize which surface is excellent in peelability.

  The lattice pattern design includes a plurality of first wavy pattern portions 6a and a plurality of second wavy pattern portions 6b intersecting with each of the first wavy pattern portions 6a. Here, the plurality of first wavy pattern portions 6a and the plurality of second wavy pattern portions 6b are arranged in parallel to each other. Further, in a region surrounded by the first wavy line pattern portion 6a and the second wavy line pattern portion 6b, a processed region 10 subjected to fine processing is formed.

  Moreover, it is preferable that the space | interval B between 1st wavy pattern parts and the space | interval B between 2nd wavy pattern parts are 20 mm or more, respectively. By narrowing the area of the non-processed part so that the interval B is 20 mm or more, sticking to the surface of the aluminum foil 2 is less likely to occur.

  In addition to the lattice pattern, the surface of the aluminum foil 2 coated with the silicone resin can be cooked such as “Omote” indicating that the surface has excellent peelability and meat and fish. You may form the illustration which shows a foodstuff, the display of a brand name etc. by embossing.

  In addition, the lattice pattern design can change the ratio of the processed portions included in the first wavy pattern portion 6a and the second wavy pattern portion 6b, or the first wavy pattern portion and the second wavy pattern. Various patterns can be formed depending on whether the intersection 12 with the part is a processed part or a non-processed part.

(Shape of wavy pattern portion 6)
The shape of the wavy pattern portion 6 (a general term for the case where the first wavy pattern portion 6a and the second wavy pattern portion 6b are collectively referred to) is determined by the thickness, the wave pitch, and the wave height. In addition, it is preferable that the thickness A of the wavy pattern part 6 is 0.5 mm or more and 5.0 mm or less. By making the thickness A 0.5 mm or more, the wavy pattern portion 6 can be easily recognized. Moreover, by making thickness A 5.0 mm or less, the area of the non-processed part which occupies the surface of the aluminum foil 2 can be reduced, and peelability can be improved.

  Here, the wave pitch and wave height of the wavy line pattern portion 6 will be described with reference to FIG. As shown in FIG. 2, in the traveling direction (X) of the wavy pattern portion 6, the length between wave crests or wave bottoms, that is, the unit length corresponding to the wavelength is the wave pitch. Further, in the amplitude direction (Y) of the wavy pattern portion 6, the height from the wave bottom to the wave top, that is, the height corresponding to the amplitude is the wave height. The crest and wave bottom are based on the lowest point in the wavy pattern portion 6.

  When the wave pitch and the wave height are thus defined, the wave height is preferably 1 mm or more and ¼ or less of the wave pitch. Thus, by setting the wave height to 1 mm or more, the shape of the wave is emphasized and can be differentiated from the straight line, and sticking is prevented more than when the linear pattern portion is formed on the surface of the aluminum foil 2. The effect can be high. Moreover, it becomes possible to prevent the design from becoming messy by limiting it to 1/4 or less of the wave pitch.

  Further, the interval B between the wavy pattern portions 6 is more preferably an interval that is an integral multiple of the wave pitch. Thereby, the space | interval B of the wavy pattern part 6 can be linked with the period of a wave, the design of a well-balanced wavy lattice pattern can be formed, and a consumer's willingness to purchase can be further evoked. .

(Shape of intersection 12)
The intersecting portion 12 between the first wavy pattern portion 6 a and the second wavy pattern portion 6 b greatly affects the peelability of the aluminum foil 2. Further, the shape of the intersecting portion 12 can be changed according to the shape of the wavy pattern portion 6. Specifically, as shown in FIGS. 1 and 3, the crossing portion 12 can be made into an unprocessed portion without being embossed, and as shown in FIGS. 4 and 5, the crossing portion 12 can be embossed. It can also be a processed part. In view of the peelability of the aluminum foil 2, it is preferable that the intersecting portion 12 is a processed portion.

  According to the invention according to this embodiment, the surface of the aluminum foil 2 is provided with a wavy lattice pattern formed by finely processed irregularities, thereby maintaining a design that leads to sales and cooking in an overheated state. Even in such a case, it is possible to provide an aluminum foil that hardly causes sticking.

  Examples will be shown below, and the embodiments of the present invention will be described in more detail. Of course, the present invention is not limited to the following examples, and it goes without saying that various aspects are possible in detail.

(Sticking judgment method)
A fried egg was actually created, and whether or not there was stickiness on the surface of the aluminum foil 2 was checked to determine stickiness. A specific determination method is shown below. First, each aluminum foil 2 shown in FIG. 1 and FIGS. 3 to 5 was laid on a frying pan and heated for 1 minute with high heat. Next, one egg was cut and heated for 3 minutes, and the presence or absence of sticking at that time was confirmed (sticking test: first table). Thereafter, the fried egg was turned over and heated for another minute, and the presence or absence of sticking at that time was confirmed (sticking test: back of the first time).
Subsequently, the aluminum foil 2 having the same design was newly cut, and the aluminum foil 2 was used to determine stickiness again (stickiness test: second time).

  The sticking judgment was performed by the following method. For sticking, (1) A spatula or the like is inserted between the fried egg and the aluminum foil 2 and feels resistance when peeled off, but there is no sticking. (2) The aluminum foil 2 is burnt or slightly sticking. (3) There are three levels of fried egg sticking to the aluminum foil 2. In addition, a stage when there was neither resistance nor sticking was added, and sticking judgment of each aluminum foil 2 was performed in four stages shown in Table 1.

[1] Example A 0.4 g / m ² silicone resin was applied to one side of an aluminum foil body 4 having a thickness of 11 μm to obtain an aluminum foil 2 coated with the silicone resin. Next, an embossing roll is press-contacted to the surface of the aluminum foil 2 covered with the silicone resin, and a lattice pattern comprising a processed portion where the surface of the aluminum foil 2 is embossed and a non-processed portion which is not embossed The pattern was formed. In addition, the depth of the unevenness | corrugation of embossing is about 13 micrometers.

Hereinafter, the pattern of the lattice pattern formed in Examples 1-4 and the comparative example is demonstrated.
Example 1
As shown in FIG. 1, the lattice pattern of the aluminum foil 2 according to the first embodiment includes a first wavy pattern portion 6a, a second wavy pattern portion 6b, and a processing region 10. As shown in FIG. 1 and Table 2, the thickness A of each of the first wavy pattern portion 6a and the second wavy pattern portion 6b is 4 mm, and the first wavy pattern portion 6a and the second wavy pattern portion 6a The distance B between the two wavy pattern portions 6b is 25 mm. Moreover, the wave pitch of the 1st wavy line pattern part 6a and the 2nd wavy line pattern part 6b is 30 mm, respectively, and a wave height is 2 mm, respectively.

(Example 2)
About the lattice pattern of the aluminum foil 2 which concerns on Example 2, as shown in FIG. 3, the wavy pattern part 6 is made thin, and the thickness of the 1st wavy pattern part 6a and the 2nd wavy pattern part 6b The difference from Example 1 is that A is 2 mm. Since others are the same as those in the first embodiment, description thereof is omitted.

(Example 3)
About the lattice pattern of the aluminum foil 2 which concerns on Example 3, as shown in FIG. 4, 4 mm square substantially square shape in the cross | intersection part 12 of the 1st wavy pattern part 6a and the 2nd wavy pattern part 6b. This is different from Example 1 in that embossing is performed. Since others are the same as those in the first embodiment, description thereof is omitted.

Example 4
About the lattice pattern of the aluminum foil 2 which concerns on Example 4, as shown in FIG. 5, it is 2 mm square substantially square shape in the cross | intersection part 12 of the 1st wavy pattern part 6a and the 2nd wavy pattern part 6b. This is different from the second embodiment in that embossing is performed. Since others are the same as those of the second embodiment, the description thereof is omitted.

(Comparative example)
The lattice pattern of the aluminum foil 200 according to the comparative example is a linear pattern of the lattice pattern of the aluminum foil 2 according to Example 1, as shown in FIG. For this reason, when the aluminum foil 200 is used, the effect obtained by making the lattice pattern wavy is not obtained.

  According to the results of the sticking test shown in Table 2, when the lattice-patterned aluminum foil 2 according to Examples 1 to 4 is used, the lattice-patterned aluminum foil 200 according to the comparative example is used. It can be seen that stickiness is improved as compared with. The reason why the sticking has been improved is explained by the fact that, in the first sticking test, there was resistance in the comparative example, whereas in Examples 1 to 4, the resistance was lost. In the second sticking test of Example 4, not only sticking but also resistance was not observed.

  4 and 5 of the above-described embodiment, the shape in which the intersecting portion 12 is embossed is introduced. However, when the wavy pattern portion 6 is divided at the processed portion, the intersecting portion 12 is not necessarily formed. There is no need to provide a processed portion. For example, you may arrange | position a process part so that the wavy pattern part 6 may become broken line shape.

  In the above-described embodiment, the wavy line pattern portions 6 do not have to be strictly parallel. Further, the covering material is not necessarily a silicone resin, and may be applied to both surfaces of the aluminum foil body 4.

  According to the present invention, it is possible to provide an aluminum foil that maintains a design that leads to sales and that hardly sticks even when cooked in an overheated state.

2 Aluminum foil 4 Aluminum foil body 6 Wavy line pattern part 6a First wavy line pattern part 6b Second wavy line pattern part 10 Processing region 12 Intersection

Claims (8)

An aluminum foil having at least one surface coated with a covering material,
On the coated surface coated with the coating material,
A plurality of first wavy pattern portions;
A plurality of second wavy pattern portions intersecting each of the first wavy pattern portions;
An aluminum foil, characterized in that a processed region which is located in a region surrounded by the first wavy pattern portion and the second wavy pattern portion and is subjected to fine processing is formed.   2. The aluminum foil according to claim 1, wherein a plurality of the first wavy pattern portions are arranged in parallel to each other, and a plurality of the second wavy pattern portions are arranged in parallel to one another.   The wave heights of the first wavy line pattern part and the second wavy line pattern part are 1 mm or more and 1 of the wave pitch of the waves constituting the first wavy line pattern part and the second wavy line pattern part. The aluminum foil according to claim 1 or 2, wherein the aluminum foil is / 4 or less. The interval between the first wavy pattern portions and the interval between the second wavy pattern portions are each 20 mm or more,
The thickness of the first wavy line pattern portion and the thickness of the second wavy line pattern portion are 0.5 mm or more and 5.0 mm or less, respectively. The aluminum foil as described in the item.   5. The aluminum foil according to claim 4, wherein an interval between the first wavy pattern portions and an interval between the second wavy pattern portions are each an integer multiple of the wave pitch.   2. The first wavy line pattern portion and the second wavy line pattern portion include a processed portion that has been subjected to fine processing and a non-processed portion that has not been subjected to fine processing. The aluminum foil as described in any one of -5.   The said process part is provided in the cross | intersection part where the said 1st wavy line pattern part and the said 2nd wavy line pattern part cross | intersect. Aluminum foil.   The said covering material is a silicone resin, The aluminum foil as described in any one of Claims 1-7 characterized by the above-mentioned.

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