JP4044638B2

JP4044638B2 - Cima cleaning method and apparatus

Info

Publication number: JP4044638B2
Application number: JP03257997A
Authority: JP
Inventors: 守夫山田; 慶三辻; 光雄谷岡
Original assignee: Toyo Seikan Kaisha Ltd
Current assignee: Toyo Seikan Kaisha Ltd
Priority date: 1997-02-03
Filing date: 1997-02-03
Publication date: 2008-02-06
Anticipated expiration: 2017-02-03
Also published as: JPH10220700A

Description

【０００１】
【発明の属する技術分野】
本発明は、シーマの洗浄方法及びその装置に関する。
【０００２】
【従来の技術】
シーマは、その運転中に缶が高速回転するため缶から内容液の一部が遠心力や衝撃により、飛散してシーマを汚すことがある。また、シーミングロールの高速回転により、内部に充填しているグリースが液状化して周囲に跳び散ることもあり、これらの現象は、近時のシーマの高速化に伴いますます顕著になってきている。そのため従来、清浄状態で缶の巻締ができるように、巻締作業開始前及び巻締作業終了後に本体カバーやリフターテーブル等シーマ本体の汚れが溜り易い部分を５０℃〜６０℃の温水で洗い流す定置洗浄を行っている。
【０００３】
【発明が解決しようとする課題】
しかしながら、巻締作業中に飛び散った液は、特にホットパック充填の場合、直ぐにこびりつき、巻締作業終了後の洗浄では容易に落ちにくいという問題がある。また、内溶液は缶胴及び缶蓋が通過する部分にも飛散してしまうことがあるが、該個所は従来のシーマ本体の定置洗浄では効果的な洗浄が行われていない。さらに、例え巻締作業開始前に洗浄が確実に行われたとしても、巻締作業中に飛散する液やグリースで汚れが発生し、特に缶に直接接触する場所の巻締作業中の汚れは、巻締した缶詰の清浄度に直接影響を及ぼす等の問題点があった。そのため、従来の定置洗浄方式では、巻締作業中も含め常時清浄状態に維持することは困難であり、腐敗・変敗しやすい食品の場合は、充填後にレトルト殺菌を行なうか又は無菌充填方式を採用する必要がある。
【０００４】
本発明は、上記実情に鑑み創案されたものであって、従来のシーマの定置洗浄では達成することができなかった缶胴及び缶蓋が通過する部分も含めて確実に殺菌、除菌、洗浄が出来、且つ巻締作業中も常にシーマを高清浄度を維持することができる新規なシーマ洗浄方法及びその装置を提供することを目的とする。
【０００５】
【課題を解決するための手段】
上記問題点を解決する本発明のシーマの洗浄方法は、複数の噴射ノズルが配置された第１系統管路により、巻締作業開始前に、シーマの主に缶の通過部分と蓋の通過部分及びシーマ本体の汚れが溜る部分に重点的に熱水を吹き付けてシーマを洗浄除菌する熱水洗浄工程、蒸気供給源と無菌水供給源に切替弁を介して接続され、複数の噴射ノズルが配置された第２系統管路を有し、該第２系統管路を巻締作業開始前には前記蒸気供給源に接続して該第２系統管路を蒸気殺菌する蒸気殺菌工程、巻締作業中は該第２系統管路を無菌水供給源に接続して該第２系統管路により内容液が飛び散る部分に無菌水を吹き付けて無菌水で連続洗浄を行う無菌水洗浄工程と、ガスターレットの内側を第３系統管路により、巻締作業開始前に蒸気殺菌するガスターレット蒸気殺菌工程からなることを特徴とする。
【０００６】
熱水洗浄工程は８０〜９５℃の熱水を２０〜４０分間、望ましくは９０℃の熱水を３０分間吹き付け、蒸気殺菌工程は１２１〜１２４℃の蒸気を約３０分間通過させることにより行うことが望ましい。そして、前記熱水洗浄工程では、主に缶の通過部分と蓋の通過部分及びシーマ本体の汚れが溜る部分、例えばシーミングロール、リフタープレート、ガスターレット、シーマカバー、カバーガイドレール、カバースタック、リフターテーブル、ハーフモードターレット、ディスチャージターレット、ステーショナリガイドをそれぞれ洗浄し、前記無菌水洗浄工程では、さらに缶巻締中に内容液が飛び散る部分、例えば前記シーミングロール、前記リフタープレート、前記ガスターレット及び前記シーマカバーを連続洗浄することが望ましい。
【０００７】
さらに、ガスターレットの内側を第３系統管路により、巻締作業開始前に蒸気殺菌するガスターレット蒸気殺菌工程を有することによって、巻締直前に缶内に吹き込まれる不活性ガスが通過するガスターレットの内部を確実に殺菌することができ望ましい。
【０００８】
また、本発明のシーマの洗浄装置は、上流側が熱水供給源に接続されて下流側がシーマ装置外周部に配管され、シーマの熱水洗浄個所に向けて熱水を噴射する複数の噴射ノズルが配置された第１系統管路と、上流側が蒸気供給源と無菌水供給源に切り替え接続可能となっており、下流側にシーマの無菌水連続洗浄個所に向けて蒸気又は無菌水を噴射する複数の噴射ノズルが配置された第２系統管路と、不活性ガスを供給してガス置換を行うガスターレット内の殺菌を行うための管路であって、上流側が蒸気供給源に接続され下流側がガスターレット内に蒸気を供給する第３系統管路とからなることを特徴とする構成を有するものである。
【０００９】
【発明の実施の形態】
以下、本発明のシーマ洗浄装置及び該装置によるシーマ洗浄方法の実施形態を図面に基づき詳細に説明する。
図１はシーマ洗浄装置の平面配置を示し、図２はその正面概略図、図３は右側面概略図であり、さらに図４はカバーガイドレール部の拡大平面図である。図中１はカバースタック、２はガスターレット、３はハーフモードターレット、４はデッイスチャージターレット、５はシーミングロール、６はリフターテーブル、７はリフタプレート、８はシーマカバー、９はカバーガイドレールであり、これらは従来のシーマと同様である。
【００１０】
本発明は、上記シーマにおいて、従来の定置洗浄では困難であった箇所である、缶が通過する箇所、蓋が通過する箇所及びガスを缶内に入れる箇所も確実に洗浄できるように第１系統管路１０と、これらの箇所を常に清浄状態を維持するために巻締作業中も連続洗浄を行なうことができるように第２系統管路１５とを図示のように、シーマの外周部にシーマの巻締作業に邪魔にならないように適宜配管したものである。
【００１１】
本実施形態では、熱水供給源に接続されている第１系統管路１０には、シーミングロール５、リフタープレート７、ガスターレット２、キャンフィードチェーン（図示せず）、シーマカバー８、カバーガイドレール９、カバースタック１、リフターテーブル６、ハーフモードターレット３、ディスチャージターレット４、ステーショナリガイド（図示せず）にそれぞれ熱湯を吹き付ける多数のノズル１１が配置され、巻締作業開始前に、９０℃の熱水を３０分間吹き付けてシーマ装置を洗浄することになっている。
【００１２】
熱水を吹き付けるノズル１１は、上記各部に対してそれぞれ少なくとも１個配置されているが、本実施形態ではシーマカバーに対しては５個、カバーガイドレールに対しては９個それぞれ配置し、カバーガイドレールに対しては、缶蓋のカール部が載るガイド部に向けても直接熱水が噴射されるように配置を工夫した。また、前記ノズルのうち、カバーガイドレールの入口・出口の２か所、カバースタック、ステーショナリーガイドの合計４か所は脱着可能な配管としている。また、カバースタック１に吹き付けるノズルは、広角全面散水型ノズルを採用し、他はフラット散水型ノズルを採用した。
【００１３】
第２系統管路１５には、シーミングロール５、リフタープレート７、ガスターレット２、キャンフィードチェーン（図示せず）、シーマカバー８にそれぞれ、巻締作業中に滅菌水を吹き付けるノズル１６を配置している。第２系統管路１５の上流側は図示しない蒸気供給源と無菌水供給源に切替弁を介して接続され、巻締作業開始前に、第２系統管路１５を蒸気供給源に接続して１２１〜１２４℃の蒸気を３０分間供給して配管内とノズルの殺菌を行なって無菌水が汚染されることを防ぐ。そして巻締作業開始後は無菌水供給源に接続して無菌水を供給するようにしてある。それにより、巻締作業中に内溶液が飛び散る箇所を常時無菌水で洗い流し、内溶液のこびり付き及び菌の付着を防止している。そして、特に、前記のように、缶の内溶液と接触するおそれがある缶蓋部分や缶胴部分と直接接触するシーマ部分を重点的に連続洗浄することによって、巻締工程を高度な清浄状態で行なうことができる。
【００１４】
また、図示してないが、巻締直前に缶内に不活性ガスを供給してガス置換を行なうガスターレットの内側部分に蒸気を供給する第３系統管路を配置し、巻締作業開始前に１２１〜１２４℃の蒸気を３０分間供給してガスターレット内の殺菌を行なうようにしてある。
なお、図１〜図３は、ノズル１１から熱水を、ノズル１６から無菌水を噴射している状態を模式的に示している。また図４において、１１を丸で囲った表示はノズル１１の配置位置を表わし、矢印は熱水噴射方向を表わしている。
【００１５】
以上のように、本発明によれば、巻締開始前にシーマ装置の缶及び蓋が通過する部分、及びシーマ本体の汚れが溜り易い部分を重点的に熱水で洗浄して滅菌、除菌をし、飛散した内溶液やグリースを常に洗い流すようにしたから、簡単な設備で巻締作業中高度の清浄状態を保つことができる。
【００１６】
以上、本発明の好適な実施形態を説明したが、本発明は上記実施形態に限らず、種々の設計変更が可能である。例えば、第１系統管路で熱水洗浄する箇所、第２系統管路で連続洗浄する箇所は必ずしも上記箇所に限るものでなく、内容物等に応じて適宜選択できる。また、熱水洗浄も熱水温度及び洗浄時間は、９０℃、３０分間以上が望ましいが、内容物等条件によって８５℃〜９５℃の範囲で２０〜４０分間の範囲で適宜選択できる。また、蒸気殺菌も１２１〜１２４℃、３０分間が望ましいが、それに限るものでなく内容物等の条件に応じて最適温度時間を選択すれば良い。
さらに、熱水洗浄に使用する水についても、殺菌効果を上げる目的で、薬剤、例えば次亜鉛素酸ナトリウムを含有させることも可能である。
尚、この場合は、薬剤の種類により、薬剤除去のため無菌水による洗浄を必要に応じて行なう。
【００１７】
【実験例】
実験１
本発明の方法によりシーマの洗浄を行なった場合のシーマの汚染度・洗浄効果を確認するために次のような実験を順次行なった。
▲１▼洗浄前に表１に示す各部材を分解して拭き取り検査し、その検出菌数を調べた。なお、拭き取り法による検査は、検査箇所を無菌水を付けた綿棒で拭き取り、該綿棒を生理食塩水１５ml中に湿らして菌を移し、それを８５℃まで加熱処理し、１mlをＳＭＡ培地にて３７℃好気性雰囲気で混釈培養した。以下同じ。
▲２▼洗浄ノズルを１２個を使用して９０℃の熱水を３０分間噴射してシーマを洗浄し、その後拭き取り検査を行なった。
▲３▼腐敗しやすいミルクコーヒを最も内溶液が飛散し易い満注状態で充填した缶を、巻締作業中無菌水を噴射して連続洗浄しながら、１，０５０缶巻締した。その後、▲１▼と同様に分解拭き取り検査を行なった。
▲４▼シーマを分解洗浄して分解拭き取り検査を行なった。
▲５▼シーマに取付後上記▲２▼と同様な検査を行なった。
▲６▼巻締中の無菌水による連続洗浄を行なわないで、上記▲３▼と同様な試験を行なった。
【００１８】
以上の実験の各段階でシーマの各部から得た菌をそれぞれ上記方法で４８時間培養後、それぞれの菌数を検出した。その結果を表１に示す。
【表１】

以上の実験結果から、洗浄前のシーマからは▲１▼に示すように、多くの部分で菌が検出されているが、巻締作業開始前に本発明の方法で熱水で洗浄すると▲２▼で示すように検査した全ての箇所で菌は発見できなかった。なお、表中の−で示している部分は、分解しない限り綿棒での拭き取りが出来ないため、拭き取り検査を行なっていないところである。その後、▲３▼で菌の発生し易い内容液を、わざと飛散するように満注充填した缶の巻締を行なっても、本発明の方法により巻締中も連続洗浄した結果、菌は全く発見されなかった。
【００１９】
一方、▲５▼の巻締開始前は全く菌は発見されなかったが、▲６▼で巻締中の連続洗浄を行なわないで巻締した場合は、カバーガイドレール部で菌が検出された。このことは、巻締中に内容液が飛散してシーマが部分的に汚染され、菌が発生したことを示し、巻締中も無菌水によって連続することが常に清浄度を維持することに格別の効果があることを示している。
【００２０】
実験２
テストパックを行ない、本発明の洗浄方法によりシーマの洗浄を行なった場合のテストパックの汚染度・洗浄効果を確認するために次のような実験をそれぞれ行なった。
テストパックは、滅菌空缶内にクリーンブース内で肉エキス培地を充填し、それを滅菌蓋を使用して以下の各条件で巻締を行なった。
▲１▼前日に通常の温水洗浄を行なったシーマを使用して、巻締直前及び巻締中の洗浄を全く行なわないで巻締した。
▲２▼巻締作業開始前に９０℃の熱水で３０分間洗浄したシーマを使用して、巻締中の連続洗浄を行なわないで巻締を行なった。
▲３▼巻締作業開始前に９０℃の熱水で３０分間洗浄し、且つ第２系統管路に１２１〜１２４℃の蒸気を約３０分間通過させ、巻締中は第２系統管路から無菌水で連続洗浄を行ないながら巻締を行なった。
【００２１】
以上の条件で巻締した缶詰を、３７℃雰囲気で３週間保管した後、及び５５℃で３週間保管した後、それぞれ開缶して変敗缶数を調べた。その結果を表２に示す。
【表２】

以上の実験結果からも明らかなように、いずれの保存条件においても、変敗缶数の割合は、▲１▼▲２▼▲３▼の順に少なくなり、▲３▼の本発明の洗浄条件で洗浄を行ないながら巻締したものが他の条件のものと比べて顕著に変敗缶数が少なく、本発明の効果が確認された。以上の実験結果から、本発明によれば、無菌充填やレトルト殺菌を行なわなくても極めて高清純度の缶詰を得ることが可能であることが判る。
【００２２】
【発明の効果】
以上のように本発明によれば、簡単な設備により、従来のシーマの定置洗浄では達成することができなかった巻締中も常に高清浄度を維持して缶詰を巻締することができる。特に、巻締開始前にシーマ装置の缶及び蓋が通過する部分、及びシーマ本体の汚れが溜り易い部分を重点的に熱水で洗浄して殺菌、除菌し、さらに巻締作業中も特に密封前後に缶の内溶液の清浄度に影響を及ぼすおそれのある箇所を連続的に無菌水で洗浄して、飛散した内溶液やグリースを常に洗い流すようにしたから、内溶液のこびり付き及び菌の付着を防止すると共に、巻締作業中高度の清浄状態を保つことができる。
従って、内容物の種類によっては無菌充填やレトルト殺菌を行なわなくても極めて高清純度の缶詰を得ることが可能である。
【図面の簡単な説明】
【図１】本発明のシーマ洗浄装置の実施形態に係る平面配置図である。
【図２】その正面概略図である。
【図３】その右側面概略図である。
【図４】そのカバーガイドレール部の拡大平面図である。
【符号の説明】
１カバースタッカ２ガスターレット
３ハーフモードターレット４ディスチャージターレット
５シーミングロール６リフターテーブル
７リフタープレート８シーマカバー
９カバーガイドレール１０第１系統管路
１１ノズル１５第２系統管路
１６ノズル[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method and apparatus for cleaning a seama.
[0002]
[Prior art]
During the operation of the seamer, the can rotates at a high speed, so that a part of the content liquid may scatter from the can due to centrifugal force or impact and contaminate the seama. Also, due to the high-speed rotation of the seaming roll, the grease filled inside liquefies and scatters around, and these phenomena are becoming more prominent with the recent increase in the speed of seamers. Yes. For this reason, conventionally, in order to be able to wind the can in a clean state, wash away portions of the seamer body, such as the main body cover and the lifter table, which are likely to collect dirt before and after the end of the tightening operation, with warm water at 50 to 60 ° C. In-place cleaning is performed.
[0003]
[Problems to be solved by the invention]
However, there is a problem that the liquid splashed during the winding operation sticks immediately, particularly in the case of hot pack filling, and is not easily removed by cleaning after completion of the winding operation. In addition, the inner solution may be scattered also in the portion through which the can body and the can lid pass, but this portion has not been effectively cleaned by conventional stationary cleaning of the seamer body. Furthermore, even if cleaning is performed before the start of the winding operation, dirt is generated by the liquid and grease splashed during the winding operation, especially during the winding operation where it directly contacts the can. There were problems such as having a direct effect on the cleanliness of the rolled cans. For this reason, it is difficult for the conventional stationary cleaning system to maintain a clean condition at all times, including during the tightening operation.For foods that are prone to spoilage and deterioration, retort sterilization after filling or an aseptic filling system should be used. It is necessary to adopt.
[0004]
The present invention has been devised in view of the above circumstances, and can be surely sterilized, sterilized, and cleaned, including a portion through which a can body and a can lid pass, which could not be achieved by conventional stationary cleaning of a seamer. An object of the present invention is to provide a novel seam cleaning method and apparatus capable of maintaining high cleanliness of the seamer even during the winding operation.
[0005]
[Means for Solving the Problems]
In the seam cleaning method of the present invention that solves the above-mentioned problems, the seam mainly passes through the can and the cover through the first system pipe line with a plurality of injection nozzles before the winding operation starts. And a hot water washing process in which hot water is sprayed on the part where the dirt of the seama body concentrates to wash and disinfect the seama, connected to a steam supply source and a sterile water supply source via a switching valve, and a plurality of spray nozzles A steam sterilization step for sterilizing the second system pipeline by connecting the second system pipeline to the steam supply source before starting the winding operation ; during this procedure a sterile water washing step to perform continuous washing said two systems conduit by blowing sterile water in a portion content liquid splashes by connecting to sterile water source said dual conduit with sterile water, gas Gaster that sterilizes steam inside the starlet before starting the tightening operation by the 3rd system pipeline Characterized by comprising the let steam sterilization process.
[0006]
The hot water washing step is performed by spraying hot water at 80 to 95 ° C. for 20 to 40 minutes, desirably 90 ° C. for 30 minutes, and the steam sterilization step by passing steam at 121 to 124 ° C. for about 30 minutes. Is desirable. And in the hot water washing step, mainly the passage part of the can, the passage part of the lid and the part where the dirt of the seamer body accumulates, for example, seaming roll, lifter plate, gas turret, seamer cover, cover guide rail, cover stack, The lifter table, the half-mode turret, the discharge turret, and the stationary guide are each washed. In the aseptic water washing step, the portion where the content liquid scatters during can winding, for example, the seaming roll, the lifter plate, the gas turret, It is desirable to continuously wash the seamer cover.
[0007]
Furthermore, the gas turret through which the inert gas blown into the can immediately before winding is passed by having a gas turret steam sterilization process in which the inside of the gas turret is steam sterilized by the third system line before starting the winding operation It is desirable that the inside of the can be sterilized reliably.
[0008]
Further, the cleaning device for the seamer of the present invention has an upstream side connected to a hot water supply source and a downstream side piped to the outer periphery of the seamer device, and a plurality of injection nozzles for injecting hot water toward the hot water cleaning part of the seamer. A plurality of pipes for injecting steam or sterilized water toward the sterilized water continuous washing point of the seamer on the downstream side, which can be switched and connected to the steam supply source and the sterilized water supply source on the upstream side of the arranged first system pipeline The second system pipe line in which the injection nozzle is disposed and the pipe line for sterilization in the gas turret for supplying the inert gas to perform gas replacement, the upstream side being connected to the steam supply source and the downstream side There are those having a structure characterized by comprising a third system conduit for supplying steam into the gas Starrett.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a seamer cleaning apparatus and a seamer cleaning method using the apparatus will be described in detail with reference to the drawings.
1 is a plan view of the seamer cleaning device, FIG. 2 is a schematic front view thereof, FIG. 3 is a schematic right side view thereof, and FIG. 4 is an enlarged plan view of a cover guide rail portion. In the figure, 1 is a cover stack, 2 is a gas turret, 3 is a half-mode turret, 4 is a charge charger turret, 5 is a seaming roll, 6 is a lifter table, 7 is a lifter plate, 8 is a seamer cover, and 9 is a cover guide. These are rails, which are similar to conventional seamers.
[0010]
The first system of the present invention allows the above-mentioned seamer to reliably clean the places where the can passes, the places where the lid passes, and the places where the gas is put into the can, which are difficult places in the conventional stationary cleaning. As shown in the figure, the pipe line 10 and the second system pipe line 15 are arranged on the outer periphery of the seamer so that continuous cleaning can be performed even during the tightening operation in order to keep these portions clean. The pipes are appropriately piped so as not to interfere with the winding work.
[0011]
In the present embodiment, the first system pipe line 10 connected to the hot water supply source includes a seaming roll 5, a lifter plate 7, a gas turret 2, a can feed chain (not shown), a seamer cover 8, and a cover. The guide rail 9, the cover stack 1, the lifter table 6, the half-mode turret 3, the discharge turret 4, and a number of nozzles 11 for spraying hot water on the stationary guide (not shown) are arranged. The hot water is sprayed for 30 minutes to wash the seamer device.
[0012]
At least one nozzle 11 for spraying hot water is disposed for each of the above parts, but in this embodiment, five nozzles are disposed for the seamer cover and nine are disposed for the cover guide rail. For the guide rail, the arrangement was devised so that hot water was directly jetted toward the guide part on which the curl part of the can lid is placed. In addition, among the nozzles, two places of the inlet / outlet of the cover guide rail, a total of four places of the cover stack and the stationery guide are detachable pipes. Moreover, the nozzle sprayed to the cover stack 1 employ | adopted the wide-angle whole surface water spray type nozzle, and the others employ | adopted the flat water spray type nozzle.
[0013]
In the second system pipe line 15, nozzles 16 for spraying sterilizing water during the winding operation are arranged on the seaming roll 5, the lifter plate 7, the gas turret 2, the can feed chain (not shown), and the seamer cover 8, respectively. is doing. The upstream side of the second system pipe line 15 is connected to a steam supply source and a sterile water supply source (not shown) via a switching valve, and before starting the winding operation, the second system pipe line 15 is connected to the steam supply source. Steam at 121 to 124 ° C. is supplied for 30 minutes to sterilize the inside of the pipe and the nozzle to prevent contamination of aseptic water. Then, after starting the winding operation, the sterilized water is supplied by connecting to the sterilized water supply source. As a result, the portion where the internal solution scatters during the tightening operation is always washed away with aseptic water to prevent the internal solution from sticking and the attachment of bacteria. In particular, as described above, the squeezing process can be performed in a highly clean state by focusing on continuous cleaning of the can lid part and the seam part directly in contact with the can body part, which may come into contact with the inner solution of the can. Can be done.
[0014]
Although not shown in the figure, a third system line for supplying steam to the inner part of the gas turret that supplies an inert gas into the can and performs gas replacement immediately before winding is arranged, and before the winding operation is started. The gas turret is sterilized by supplying steam at 121 to 124 ° C. for 30 minutes.
1 to 3 schematically show a state where hot water is jetted from the nozzle 11 and sterile water is jetted from the nozzle 16. Further, in FIG. 4, the display in which 11 is circled represents the arrangement position of the nozzle 11, and the arrow represents the hot water injection direction.
[0015]
As described above, according to the present invention, the portion through which the can and lid of the seamer device pass before the start of winding and the portion where the dirt of the seamer body easily accumulates are mainly washed with hot water for sterilization and sterilization. Since the scattered internal solution and grease are always washed away, it is possible to maintain a highly clean state during the tightening operation with simple equipment.
[0016]
The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment, and various design changes are possible. For example, the location where hot water cleaning is performed in the first system pipeline and the location where continuous cleaning is performed in the second system pipeline are not necessarily limited to the above locations, and can be appropriately selected according to the contents and the like. In addition, the hot water temperature and the cleaning time are preferably 90 ° C. and 30 minutes or longer, but can be appropriately selected within the range of 85 ° C. to 95 ° C. and 20 to 40 minutes depending on the contents and the like. In addition, steam sterilization is preferably 121 to 124 ° C. for 30 minutes, but is not limited thereto, and an optimum temperature time may be selected according to the conditions of the contents and the like.
Furthermore, water used for hot water washing can also contain a drug, for example, sodium hypozinc acid, for the purpose of enhancing the bactericidal effect.
In this case, depending on the type of drug, washing with sterile water is performed as necessary to remove the drug.
[0017]
[Experimental example]
Experiment 1
In order to confirm the degree of contamination and the cleaning effect of the seam when the seam was cleaned by the method of the present invention, the following experiments were sequentially performed.
{Circle around (1)} Each member shown in Table 1 was disassembled and wiped and inspected before washing, and the number of detected bacteria was examined. In the inspection by the wiping method, the inspection site is wiped with a cotton swab with aseptic water, the cotton swab is dampened in 15 ml of physiological saline, the bacteria are transferred, heat-treated to 85 ° C., and 1 ml in SMA medium. The culture was carried out in an aerobic atmosphere at 37 ° C. same as below.
(2) Using 12 washing nozzles, hot water at 90 ° C. was sprayed for 30 minutes to wash the seama, and then a wiping inspection was conducted.
{Circle around (3)} A can filled with milk coffee, which is likely to rot, in a fully-filled state in which the inner solution is most likely to be scattered, was wound with 1,050 cans while being continuously washed by spraying sterile water during the tightening operation. Thereafter, a disassembly wiping inspection was performed in the same manner as in (1).
(4) The seama was disassembled and cleaned, and a disassembly and wiping inspection was conducted.
(5) After mounting on the seamer, the same inspection as in (2) above was performed.
(6) A test similar to the above (3) was conducted without continuous washing with sterile water during tightening.
[0018]
Bacteria obtained from each part of the Cima at each stage of the experiment were cultured for 48 hours by the above method, and the number of each bacteria was detected. The results are shown in Table 1.
[Table 1]

From the above experimental results, bacteria were detected in many parts from the seama before washing as shown in (1). However, when washing with hot water by the method of the present invention before starting the tightening operation, (2) As shown by ▼, no bacteria were found at all the locations examined. In addition, since the part shown by-in a table | surface cannot be wiped off with a cotton swab unless it decomposes | disassembles, it is a place which has not performed the wiping inspection. Thereafter, even if the content liquid in which the bacteria are likely to be generated in (3) is fully wound so as to be scattered intentionally, the result of the continuous washing even during the winding by the method of the present invention, It was not found.
[0019]
On the other hand, no bacteria were found before the start of winding in (5). However, when winding was performed without continuous washing during winding in (6), bacteria were detected in the cover guide rail. . This indicates that the content liquid splashed during winding and the seama was partially contaminated and germs were generated. Continuing with sterile water during winding is particularly effective in maintaining cleanliness. It shows that there is an effect.
[0020]
Experiment 2
In order to confirm the degree of contamination and the cleaning effect of the test pack when the test pack was performed and the seama was cleaned by the cleaning method of the present invention, the following experiments were respectively performed.
The test pack was filled with meat extract medium in a clean booth in a sterilized empty can, and was wound with a sterilization lid under the following conditions.
(1) Using a seamer that had been subjected to normal warm water washing on the previous day, it was wound without performing any washing immediately before and during winding.
{Circle around (2)} Using a seamer washed with 90 ° C. hot water for 30 minutes before the start of the tightening operation, the tightening was performed without performing continuous cleaning during the tightening.
(3) Wash with hot water at 90 ° C for 30 minutes before starting the tightening operation, and allow steam at 121 to 124 ° C to pass through the second system line for about 30 minutes. The winding was performed while performing continuous washing with sterile water.
[0021]
The cans wound under the above conditions were stored at 37 ° C. for 3 weeks and stored at 55 ° C. for 3 weeks, and then opened to examine the number of cans. The results are shown in Table 2.
[Table 2]

As can be seen from the above experimental results, the ratio of the number of cans decreased in the order of (1), (2), and (3) under any of the storage conditions. The number of changeable cans was remarkably smaller in the case of being wound while being washed than in the other conditions, and the effect of the present invention was confirmed. From the above experimental results, it can be seen that according to the present invention, it is possible to obtain cans of extremely high purity without performing aseptic filling or retort sterilization.
[0022]
【The invention's effect】
As described above, according to the present invention, it is possible to wind a can with a simple equipment while maintaining a high cleanliness level even during the tightening that cannot be achieved by conventional stationary cleaning of a seamer. In particular, the part through which the can and lid of the seamer device pass and the part where the dirt of the seamer body easily accumulates is sterilized and sterilized with hot water before starting the winding, and especially during the winding operation. Before and after sealing, the parts that may affect the cleanliness of the internal solution of the can are continuously washed with sterile water so that the scattered internal solution and grease are always washed away. In addition to preventing adhesion, it is possible to maintain a highly clean state during the winding operation.
Therefore, depending on the type of contents, it is possible to obtain cans with extremely high purity without performing aseptic filling or retort sterilization.
[Brief description of the drawings]
FIG. 1 is a plan layout view of a seamer cleaning device according to an embodiment of the present invention.
FIG. 2 is a schematic front view thereof.
FIG. 3 is a schematic diagram of the right side surface thereof.
FIG. 4 is an enlarged plan view of the cover guide rail portion.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cover stacker 2 Gas turret 3 Half mode turret 4 Discharge turret 5 Seaming roll 6 Lifter table 7 Lifter plate 8 Seamer cover 9 Cover guide rail 10 1st system pipe line 11 Nozzle 15 2nd system pipe line 16 Nozzle

Claims

The first system pipe line with a plurality of spray nozzles is used to concentrate hot water mainly on the passage part of the can, the passage part of the lid, and the part where the dirt of the seamer body accumulates before starting the winding operation. A hot water cleaning process for spraying and cleaning the seama by spraying, a second supply line connected to a steam supply source and a sterile water supply source via a switching valve, and having a plurality of injection nozzles disposed therein; A steam line sterilization process for steam sterilizing the second system line by connecting the system line to the steam supply source before starting the tightening operation, and the second system line as a sterile water supply source during the winding process Aseptic water washing process in which aseptic water is sprayed onto the part where the content liquid is scattered by the second system pipe line and sterilized water is continuously washed with aseptic water. A seama characterized by comprising a gas turret steam sterilization process for steam sterilization Cleaning method.

The hot water washing step is performed by spraying hot water of 80 to 95 ° C for 20 to 40 minutes, and the steam sterilization step of the second system pipe line is performed by passing steam of 121 to 124 ° C for about 30 minutes. The method of cleaning the described seama.

A first system pipe line connected to a hot water supply source on the upstream side and piped on the outer periphery of the seamer device, and a plurality of injection nozzles for injecting hot water toward the hot water washing part of the seama; A second system pipe in which a plurality of injection nozzles for injecting steam or aseptic water toward the sterilized water continuous cleaning site of Cima are arranged on the downstream side so that the side can be switched to a steam supply source and a sterile water supply source. and road, a pipeline for performing sterilization in moth Starrett performing gas replacement by supplying an inert gas, a third downstream side upstream side is connected to a steam supply source for supplying steam to the gas Starrett Cima cleaning device characterized by comprising a system pipeline.