JPH0120860B2 - - Google Patents
Info
- Publication number
- JPH0120860B2 JPH0120860B2 JP8225486A JP8225486A JPH0120860B2 JP H0120860 B2 JPH0120860 B2 JP H0120860B2 JP 8225486 A JP8225486 A JP 8225486A JP 8225486 A JP8225486 A JP 8225486A JP H0120860 B2 JPH0120860 B2 JP H0120860B2
- Authority
- JP
- Japan
- Prior art keywords
- microwave
- packaging bag
- heat
- microwaves
- solid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000004806 packaging method and process Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 14
- 230000001954 sterilising effect Effects 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 13
- 238000004659 sterilization and disinfection Methods 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 11
- 235000013305 food Nutrition 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 description 4
- 235000021055 solid food Nutrition 0.000 description 3
- 238000009461 vacuum packaging Methods 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 235000021549 curry roux Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000015220 hamburgers Nutrition 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000012041 food component Nutrition 0.000 description 1
- 239000005417 food ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- -1 polyethylene phthalate Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、耐熱性包装袋に真空包装された固液
混合食品のマイクロ波殺菌方法に関するものでで
ある。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for microwave sterilization of solid-liquid mixed foods vacuum-packed in heat-resistant packaging bags.
耐熱性フイルムで真空包装された固液混合食品
（たとえば、ハンバーグ、ミート・ボール、カレ
ー・ルー等）を、マイクロ波を用いて、100゜以上
に加熱して殺菌する場合、包装食品の中で薄層に
なつている食品周囲の液状部分が選択的に加熱さ
れ、固形部食品よりも先に急激に温度上昇して内
圧が上昇し、包装袋の中央部分或いはシールエツ
ジ部分等から破袋してしまう。
When sterilizing solid-liquid mixed foods (e.g. hamburgers, meatballs, curry roux, etc.) vacuum-packed with heat-resistant film to 100° or higher using microwaves, The thin layer of liquid around the food is selectively heated, causing its temperature to rise rapidly and internal pressure to rise before the solid food, causing the bag to break from the center or seal edge. Put it away.
そのため、100℃以上の温度で殺菌する必要が
ある場合には、加熱を加圧下で行うレトルト法、
もしくはマイクロ波を透過し、耐熱耐圧性のある
材質の外袋の中に包装袋を収容して、包装袋の破
袋を防ぐ方法が採られていた。 Therefore, if it is necessary to sterilize at a temperature of 100℃ or higher, the retort method, which heats under pressure,
Alternatively, a method has been adopted in which the packaging bag is housed in an outer bag made of a material that is transparent to microwaves and has heat and pressure resistance to prevent the packaging bag from breaking.
しかし、前者の方法は装置が大型となり、外部
からの加熱では熱伝導効率が悪く、しかも温度上
昇に時間を要すると共に、冷却に長時間を必要と
し、食品成分の劣化を来す難点があり、また後者
の方法は、外袋を要すると共に、外袋を入れたり
出したりする手間が大変であるばかりでなく、加
熱及び冷却に時間を要する等の欠点をもつてい
た。 However, the former method requires a large device, has poor heat conduction efficiency when heated from the outside, takes time to raise the temperature, takes a long time to cool down, and has the disadvantage of causing deterioration of food ingredients. Furthermore, the latter method requires an outer bag, requires a lot of effort to put in and take out the outer bag, and has other drawbacks such as requiring time for heating and cooling.
更に最近公開された特開昭60−78568号公報に、
マイクロ波を透過する１組のエンドレスベルトを
使用し、下部のエンドレスベルト上にリテーナー
を多数配設してその中に耐熱性包装袋を入れて連
続的に加熱殺菌処理を行う方法が堤案されている
が、この方法はエンドレスベルト透過分だけマイ
クロ波エネルギーを必要とすると同時に、公報記
載のように、内圧膨脹による上下方向への力を押
え込む力を上下のエンドレスベルトに与える必要
がある。 Furthermore, in the recently published Japanese Patent Application Laid-Open No. 60-78568,
A method has been proposed in which a set of endless belts that transmit microwaves are used, a number of retainers are placed on the lower endless belt, and heat-resistant packaging bags are inserted into the retainers to perform continuous heat sterilization treatment. However, this method requires microwave energy corresponding to the amount of energy transmitted through the endless belt, and at the same time, as described in the publication, it is necessary to apply a force to the upper and lower endless belts to suppress the vertical force due to internal pressure expansion.
本発明は、上記のような問題のないマイクロ波
殺菌方法を提案するもので、耐熱性包装袋を挾持
しつゝ搬送する１組の金属製コンベアベルトを設
け、各金属製コンベアベルトの固形部食品に対向
する部分にマイクロ波透過孔を設け、このマイク
ロ波透過孔を通つてマイクロ波で加熱殺菌するよ
うにしたものである。
The present invention proposes a microwave sterilization method that does not have the above-mentioned problems, and includes a set of metal conveyor belts that sandwich and convey heat-resistant packaging bags, and solid parts of each metal conveyor belt are Microwave transmission holes are provided in the portion facing the food, and the food is heated and sterilized using microwaves that pass through the microwave transmission holes.
本発明は真空包装袋を１組の金属製コンベアベ
ルトで挾持して搬送するようにすると共に、真空
包装袋の固形部食品に対向する部分にマイクロ波
透過孔を設けて、マイクロ波で熱容量の大きい固
形部食品を集中的に加熱するようにしたので、殺
菌処理温度（例えば、水が沸騰しないぎりぎりの
温度）になるようにマイクロ波発振装置をコント
ロールするようにすれば、包装体の内部が大気圧
以上に上昇することがなく破袋を招くことがな
い。
In the present invention, a vacuum packaging bag is conveyed by being held between a pair of metal conveyor belts, and microwave transmission holes are provided in the part of the vacuum packaging bag that faces the solid part of the food, so that heat capacity can be increased by microwaves. Since large solid foods are heated intensively, if the microwave oscillator is controlled to reach the sterilization temperature (for example, just below the temperature at which water boils), the inside of the package can be heated. The pressure will not rise above atmospheric pressure and the bag will not break.
また、金属製コンベアベルトに設けたマイクロ
波透過孔に固形部食品による包装体の突出部が丁
度嵌合するため、マイクロ波透過孔は位置決めの
役を果す作用がある。 In addition, since the protrusion of the solid food package exactly fits into the microwave transmission hole provided in the metal conveyor belt, the microwave transmission hole has a positioning function.
第１図は本発明によるマイクロ波殺菌装置の実
施例を示すもので、１，２は上下に配置した金属
製コンベアベルト、Ｐは固形混合食品を真空包装
した包装袋である。
FIG. 1 shows an embodiment of the microwave sterilization apparatus according to the present invention, in which numerals 1 and 2 are metal conveyor belts arranged above and below, and P is a packaging bag in which a solid mixed food is vacuum packaged.
この包装袋は通常ポリエチレンフタレート／ナ
イロン／ポリプロピレンまたはナイロン／ポリプ
ロピレン積層フイルムから成るもので、インパル
スシールする真空包装機で、ハンバーグ、ミー
ト・ボール、カレー・ルー等の固形混合食品を密
封する。 This packaging bag is usually made of polyethylene phthalate/nylon/polypropylene or nylon/polypropylene laminated film, and is used to seal solid mixed foods such as hamburgers, meatballs, and curry roux using an impulse-sealing vacuum packaging machine.
また、前記各金属製コンベアベルト１，２には
等間隔にマイクロ波透過孔３が設けられ、このマ
イクロ波透過孔３の大きさは包装袋Ｐに密封され
た固形部４の大きさにほゞ等しく形成されてい
る。 Further, each of the metal conveyor belts 1 and 2 is provided with microwave transmission holes 3 at equal intervals, and the size of the microwave transmission holes 3 is approximately the size of the solid part 4 sealed in the packaging bag P. They are formed equally.
５はマイクロ波加熱部、６，６はマイクロ波導
波管、７は冷却部、８はデリバリーベルトであ
る。 5 is a microwave heating section, 6, 6 is a microwave waveguide, 7 is a cooling section, and 8 is a delivery belt.
次にこの装置による連続殺菌工程について説明
すると、第１図において、包装袋Ｐを下部搬送コ
ンベアベルト１左側のマイクロ波透過孔３上に包
装袋をＰ載置する。この場合、固形部４による突
出部が第２図に示すようにマイクロ波透過孔３に
嵌合して位置決めされ、右方に移動すると、下部
コンベアベルト１と同期運転されている上部コン
ベアベルト２のマイクロ波透過孔３が包装袋Ｐの
上部突出部に嵌合し、挾持した状態で包装袋Ｐを
右方に移行させる。 Next, a continuous sterilization process using this device will be described. In FIG. 1, a packaging bag P is placed on the microwave transmission hole 3 on the left side of the lower conveyor belt 1. In this case, as shown in FIG. 2, the protruding part of the solid part 4 fits into the microwave transmission hole 3 and is positioned, and when it moves to the right, the upper conveyor belt 2, which is operated in synchronization with the lower conveyor belt 1, moves to the right. The microwave transmission hole 3 fits into the upper protrusion of the packaging bag P, and the packaging bag P is moved to the right while being held.
包装袋Ｐはマイクロ波加熱部５において、マイ
クロ波導波管６，６から放射されるマイクロ波に
よつて加熱殺菌され、次いで冷却部７を通つてデ
リバリーベルト８に移される。 The packaging bag P is heated and sterilized in the microwave heating section 5 by microwaves emitted from the microwave waveguides 6, 6, and then transferred to the delivery belt 8 through the cooling section 7.
本発明に係るマイクロ波殺菌方法はマイクロ波
によつて急激に温度上昇する円周の熱容量の小さ
い液状部分を金属製コンベアベルト１，２で遮蔽
してマイクロ波による加熱殺菌を行うので、包装
袋を破袋させることなく極めて能率的に加熱殺菌
を行うことができる。
The microwave sterilization method according to the present invention performs heat sterilization using microwaves while shielding the liquid part with a small circumferential heat capacity whose temperature rises rapidly due to microwaves with metal conveyor belts 1 and 2. Heat sterilization can be carried out extremely efficiently without tearing the bag.
また先に公開された方法によると、可成りの力
で押え込むようにしないと、相変わらず包装袋全
体にマイクロ波を照射する方法であるため破袋す
るものが生じる欠点があるが、本方法ではリテー
ナーも押え込む必要もなく、優れた殺菌方法であ
る。 Also, according to the previously published method, the method still irradiates the entire packaging bag with microwaves, which has the disadvantage of causing the bag to break unless it is pressed down with considerable force. It is an excellent sterilization method that does not require a retainer or pressure.
第１図は本発明を適用したマイクロ波殺菌装置
の構成を示す図、第２図は要部の拡大断面図であ
る。
Ｐ……包装袋、１……下部金属製コンベアベル
ト、２……上部金属製コンベアベルト、３……マ
イクロ波透過孔、４……固形部、４′……液状部、
５……マイクロ波加熱部、６……マイクロ波導波
管、７……冷却部、８……デリバリーベルト。
FIG. 1 is a diagram showing the configuration of a microwave sterilizer to which the present invention is applied, and FIG. 2 is an enlarged sectional view of the main parts. P...Packaging bag, 1...Lower metal conveyor belt, 2...Upper metal conveyor belt, 3...Microwave transmission hole, 4...Solid part, 4'...Liquid part,
5... Microwave heating section, 6... Microwave waveguide, 7... Cooling section, 8... Delivery belt.
Claims (1)
マイクロ波で加熱殺菌する装置において、前記耐
熱性包装袋を挾持しつゝ搬送する１組の金属製コ
ンベアベルトを設け、各金属製コンベアベルトの
固形部食品に対向する部分にマイクロ波透過孔を
設け、このマイクロ波透過孔を通してマイクロ波
で加熱殺菌することを特徴とするマイクロ波殺菌
方法。1. In an apparatus for heating and sterilizing a solid-liquid mixed food vacuum-packaged in a heat-resistant packaging bag using microwaves, a set of metal conveyor belts is provided to sandwich and convey the heat-resistant packaging bag, and each metal conveyor belt A microwave sterilization method characterized in that a microwave transmission hole is provided in the solid portion of the solid portion facing the food, and heat sterilization is performed using microwaves through the microwave transmission hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8225486A JPS62239973A (en) | 1986-04-11 | 1986-04-11 | Microwave sterilization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8225486A JPS62239973A (en) | 1986-04-11 | 1986-04-11 | Microwave sterilization |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62239973A JPS62239973A (en) | 1987-10-20 |
| JPH0120860B2 true JPH0120860B2 (en) | 1989-04-18 |
Family
ID=13769306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8225486A Granted JPS62239973A (en) | 1986-04-11 | 1986-04-11 | Microwave sterilization |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62239973A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01171448A (en) * | 1987-12-25 | 1989-07-06 | Seiko:Kk | Method for sterilizing tofu (soybean curd) |
| US5160819A (en) * | 1991-03-11 | 1992-11-03 | Alcan International Limited | Microwave tunnel oven having means for generating higher order modes in loads |
| KR100352383B1 (en) * | 2000-07-13 | 2002-09-11 | 주식회사 엠스타 | A sterilization system incorporating microwave generating device |
| KR20010044396A (en) * | 2001-02-16 | 2001-06-05 | 김진경 | The low temperature bactericidal apparatus and method. |
| FR2954461A1 (en) * | 2009-12-21 | 2011-06-24 | Techdiss Technologies S L | DEVICE FOR THE CONTINUOUSLY THERMAL TREATMENT OF PRODUCTS, IN PARTICULAR FOOD PRODUCTS, WITH MICRO PRODUCTS |
| CN110519994A (en) * | 2017-03-03 | 2019-11-29 | 华盛顿州立大学 | Microwave sterilizable or pasteurized delivery vehicles |
-
1986
- 1986-04-11 JP JP8225486A patent/JPS62239973A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62239973A (en) | 1987-10-20 |
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