JP3923852B2 - Fat granule processing line - Google Patents

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JP3923852B2
JP3923852B2 JP2002154518A JP2002154518A JP3923852B2 JP 3923852 B2 JP3923852 B2 JP 3923852B2 JP 2002154518 A JP2002154518 A JP 2002154518A JP 2002154518 A JP2002154518 A JP 2002154518A JP 3923852 B2 JP3923852 B2 JP 3923852B2
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fat
granular
freezer
freezing
processing line
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JP2003339308A (en
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栄蔵 竹本
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竹本産業株式会社
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Description

【0001】
【発明の属する技術分野】
本発明は、サラミ、ウインナー、ハンバーグ、シューマイ・ギョーザその他の食肉加工品の副原料として使用される豚の脂身を段階的な処理工程を経て粒状に加工する脂身の粒状加工ラインに係り、特に粒状に加工された脂身(ボイル脂)をバラ状に凍結する脂身のバラ化凍結装置をラインの一部に備える脂身の加工ラインに関する。
【0002】
【従来の技術】
従来、加工ラインにおいて豚の脂身原料から粒状に加工された脂身(ボイル脂)は、加工ラインにおける最終段階の水切り工程が終了した後にライン出口等において袋詰めパックされて冷凍庫に搬入され、該冷凍庫にて約1晩掛けて凍結されていた。
そして、袋詰め凍結された脂身は冷凍庫から搬出されてウインナーやサラミ等を製造する食品メーカーに出荷されるまでの間、保管庫に保管されるものであった。
【0003】
【発明が解決しようとする課題】
この様に、従来においては袋詰めされた脂身を約1晩掛けて凍結しなければならないことから、大型冷凍庫の設置と、その保守管理が必要となる。特に冷凍庫の管理面における維持コストが大きく、また、凍結した袋詰め脂身を冷凍庫から保管庫に移し替える作業が必要となる。
【0004】
また、凍結された粒状脂身は、全てが互いに付着(固着)し合った袋詰めパック形態の大きなブロック状の塊であることから、粒状脂身を副原料として使用するウインナーやサラミ等の食品メーカーでは解凍を余儀なくされる。
つまり、従来では解凍するための解凍設備が必要となったり、解凍された粒状脂身を作業者が手もみでバラバラにほぐさなければならない面倒で手間の掛かる手作業等が余儀なくされる等、取扱い性の面においても食品メーカーからその改善が強く望まれていた。
【0005】
また、この種の冷凍食品は加工後において一気に急冷凍結されることで、鮮度(品質)が保たれるものであるが、従来ではウインナーやサラミ原料に混ぜ込まれる前にその解凍を行なわなければならないことで、凍結状態により鮮度が保たれていた粒状脂身の鮮度が解凍によって低下し、脂身の風味等が損なわれる等の品質面においても不具合が生じていた。
【0006】
本発明はこの様な従来事情に鑑みて成されたものであり、その目的とする処は、豚の脂身原料から粒状加工ラインにより粒状に加工された粒状脂身(ボイル脂)を、加工ラインまたはその延長ラインにおいて潰すことなく、一粒一粒をバラバラに分離させたバラ化状態で凍結し得るように開発した脂身の粒状加工ラインにおける脂身のバラ化凍結装置を提供することにある。
【0007】
【課題を達成するための手段】
課題を達成するために本発明は、豚の脂身原料から汚れや異物を取り除く整形工程、整形後の脂身原料を適宜大きさの粒状に加工するダイス工程、粒状脂身を湯煎槽にて湯煎するボイル工程、湯煎後の脂身を冷却槽にて冷却する冷却工程、冷却後の脂身から水分を取り除く水切り工程、水切り後の粒状脂身をバラバラに分離凍結する凍結工程を少なくとも包含する脂身の粒状加工ラインにあって、
前記凍結工程が、水切り後の粒状脂身を導入させる入口とバラバラに分離凍結された粒状脂身を導出される出口を有するトンネル型フリーザーと、
このフリーザーの前記入口側から出口側に亘り配設されて、水切り処理された粒状脂身を受け取り、該脂身を前記入口からフリーザー内に導入して前記出口へと適宜の速度にて移送するフリーザーコンベアーと、
前記フリーザー内におけるコンベアー方向数箇所に配設され、該コンベアーにより移送される粒状脂身が凍結される過程でバラバラに攪拌分離する攪拌手段とを備え、
前記攪拌手段が、フリーザーコンベアーの幅方向に架橋状で且つ対向回転状に配設されて適宜の回転数にて内向き回転する一対の回転軸と、この回転軸から放射状で軸方向に適宜等間隔にて突出し、回転軸の内向き回転より互いに対向交差しながら回転するほぐし棒群とからなり、各ほぐし棒群の互いに向き合う回転交差により粒状脂身を一粒一粒バラバラに攪拌分離するように構成したことにある。
これにより、加工ラインとは別途の冷凍庫を必要とせずに、粒状脂身をバラバラに分離させたバラ化凍結を可能とする。また、脂身を副原料として使用するウインナーやサラミ等の食品メーカーにおいては解凍設備を必要とせずに、凍結状態の粒状脂身を使用分量にてウインナーやサラミ原料等に混ぜ込んで使用することを可能とする。
【0008】
また、上記攪拌手段の回転交差する各ほぐし棒群の交差間隔を、粒状脂身の粒径と略同じか、それよりも僅かに広く設定することが好ましい。
また、上記各ほぐし棒群の先端とフリーザーコンベヤーとのクリアランスを、粒状脂身の粒径と略同じか、それよりも僅かに広く設定することが好ましい。
また、上記攪拌手段による粒状脂身の攪拌分離が、粒状脂身の凍結点前と、凍結が脂身の内部芯まで至らない凍結点中期との少なくとも2段階で行なうことが好ましい。
また、上記粒状脂身の冷却処理、そして水切り処理後における水分減少率を−10〜−15%の範囲に抑えることが好ましい。
【0009】
【発明の実施の形態】
本発明の実施の具体例を図面に基づいて説明する。
図1は加工ラインBにおける粒状脂身1のバラ化冷凍装置Aの一例を示す縦断面図、図2は同横断面図、図3は同装置の攪拌手段の一例を示す斜視図、図4は加工ラインBにおける各処理工程を段階的に示す工程ブロック図である。
【0010】
図4の加工ラインBの工程ブロック図において、B-1は整形工程、B-2はダイス工程、B-3はボイル工程、B-4は冷却工程、B-5は水切り工程、B-6は凍結工程、B-7は包装工程を示す。
これらの各処理工程B-1〜B-7により豚の脂身原料が粒状脂身1に加工され、この粒状脂身1が一粒一粒バラバラに凍結された後に袋詰めパックされるまでの一連の加工処理が段階的に行なわれるようになっている。
【0011】
整形工程B-1は、略ブロック状に精肉されている豚の脂身原料(図示セズ)から当該精肉の際に付けられる検査印(インク)やその他の汚れ、そして体毛やゴミ等の異物を取り除く下処理を行なう。
ダイス工程B-2は、下処理された脂身原料を、ウインナーやサラミ等の用途に応じた夫々の大きさ(粒径)、例えば1.5〜8mm程度の粒状脂身1に切り分ける加工処理を行なう。
ボイル工程B-3は、粒状脂身1を例えば92〜95℃位の湯煎槽等に約5〜7分位浸漬させる湯煎処理を行なう。
冷却工程B-4は、湯煎処理された粒状脂身(ボイル脂)1を例えば15〜18℃位の水に適宜の時間浸漬させる冷却・殺菌洗浄処理を行なう。
水切り工程B-5は、冷却処理された粒状脂身1から水分を適宜の押圧力(プレス等)にて取り除き減少させる水切り処理を行なう。
凍結工程B-6は、水切り処理された粒状脂身1を一粒一粒バラバラに分離凍結するバラ化凍結処理を行なう。
包装工程B-7は、バラ化凍結された粒状脂身1を計量し、袋詰めを行なう。
【0012】
整形工程B-1、ダイス工程B-2、ボイル工程B-3、冷却工程B-4、水切り工程B-5、そして包装工程B-7は、粒状加工ラインBにおける個々の工程装置やその他の処理手段により行なわれる前述した各処理内容と基本的に同じことから、各工程装置等の具体例の詳細については説明を省略する。
【0013】
凍結工程B-6は、水切り工程B-5において水切り処理された粒状脂身1をバラバラに分離凍結する冷凍処理を連続的に行なうバラ化凍結装置Aを備える。
この凍結装置Aは、粒状脂身1を導入する入口2とバラバラに分離凍結された粒状脂身1を導出させる出口3を有するトンネル型フリーザー4と、このフリーザー4の前記入口2側から出口3側に亘り配設されて水切り処理された粒状脂身1を受け取り、該脂身1を前記入口2からフリーザー4内の導入して前記出口3へと適宜の速度にて移送するフリーザーコンベアー5と、前記フリーザー4内におけるコンベアー5方向数箇所に配設され、該コンベアー5により移送される粒状脂身1が冷気により凍結される過程で付着凍結しないようにバラバラに攪拌分離する攪拌手段6とで構成されている。
【0014】
トンネル型フリーザー4は、外部への放熱と外部からの熱の伝達を防ぐ断熱効果を有する所望な壁材やその他の枠材を用いて前後に適宜の長さを有する断面が略かまぼこ型や角形等を成し、後壁と前壁の下部にフリーザーコンベアー5の幅に相当する開口幅で、該コンベアー5により適宜高さの略山積み状態で移送される粒状脂身1を導入し得る程度の開口高さを有する入口2と出口3を開口する。尚、入口2と出口3にはフリーザー4内の冷気が外部に流出するのを防ぐための適宜の素材からなるカーテンやスクリーン等からなる漏出防止幕等を設けるも任意である。
【0015】
また、このフリーザー4内には入口2側と出口3側に向けて冷気を夫々吹出す二基の冷気発生機7が配設されており、この冷気発生機7から温度が例えば−25℃〜−40℃で、風速が約6〜10m/sの冷気が継続または断続的に送風されるようにしてある。
これにより、フリーザー4の庫内温度が−25℃〜−40℃に保たれてフリーザーコンベヤー5によりフリーザー4内に導入されて該フリーザー4内を適宜の速度で移送される粒状脂身1が、フリーザー4から導出されるフリーザー通過時間内で略−15〜−20℃の凍結温度(粒状脂身1の内部芯温度)に凍結されるものである。
尚、この冷気発生機7はその冷気出力やフリーザーの大きさによっては一基の設置でも良いし、或いは二基以上を設置するも良く、設置数は冷気出力やフリーザーの大きさに応じて変更するものであり、特に限定されるものではない。
【0016】
又、フリーザーコンベヤー5の上方にはフリーザー4の入口2側から出口3側略全長に亘り冷気発生機7から送風される冷気をコンベヤー5上の粒状脂身1に垂直的に吹き掛ける垂直吹き整流板9が配設されており、この整流板9による冷気の垂直吹き出しにより粒状脂身1の凍結が短時間で効果的に行なわれるようにしてある。
【0017】
フリーザーコンベヤー5は、スチール製のベルトコンベヤーからなり、フリーザー4の入口2から出口3に渡り、入口2と出口3から移送始端側と移送終端側を夫々外部に突出させた状態でフリーザー4内全長に張架配設され、入口2側または出口3側の駆動ローター10にチェーンやVベルト等の連繋手段により接続配設される速度可変式駆動機(図示せず)の動力により断続または継続的に運転せしめて、水切り工程B-5からフリーザー4の入口2側に適宜高さの山積み状態で受け渡される粒状脂身1を、該入口2からフリーザー4内に導入し、該フリーザー4内を適宜の速度にて移送した後、出口3からフリーザー4の外に導出し、該フリーザー4内においてバラバラに分離凍結された粒状脂身1を次の包装工程B-7に移送するようになっている。
【0018】
攪拌手段6は、フリーザーコンベアー5によりフリーザー4内に導入されて同フリーザー4内を出口3に向けて移送される粒状脂身1の凍結点前、表面が凍結を開始する凍結点初期、そして凍結が脂身1の芯まで至らない凍結点中期、凍結が脂身1の内部芯まで至る凍結点終期、或いは脂身1が完全に凍結する凍結点後の各段階、本実施例では凍結点前と凍結点中期の2段階で粒状脂身1を攪拌分離することで、該粒状脂身1を潰すことなく、1粒1流をバラバラに分離凍結するようにしてある。
【0019】
この攪拌手段6は、フリーザーコンベアー5の幅方向に架橋状で且つ対向状に配設されて対向内向きに適宜の回転数にて回転する一対の回転軸6-1と、この回転軸6-1から放射状で軸方向に適宜等間隔にて突出し、回転軸6-1の内向き回転より互いに対向交差しながら回転するほぐし棒6-2群とからなり、各ほぐし棒6-2群の互いに向き合う回転交差により粒状脂身1が互いに付着(固着)しないように攪拌分離するように構成してある。
【0020】
一対の回転軸6-1は、トンネル型フリーザー4内においてフリーザーコンベヤー5の幅方向に回転可能に架橋設置され、同速にて内向き回転するようにチェーンやベルト、或いは歯車群等の連繋手段により連繋され、速度の調整を可能とする速度可変式駆動機(図示せず)からの動力により適宜の速度にて同調回転するようにしてある。
【0021】
ほぐし棒6-2は、一対の回転軸6-1の外周から夫々放射状(図では十字状)で軸方向に等間隔をおいて突出され、回転軸6-1の内向き回転による回転交差により凍結点初期と凍結点中期との2段階で粒状脂身1を潰すことなく、一粒一粒をバラバラに攪拌分離(分離凍結)し得るようにしてある。
【0022】
尚、このほぐし棒6-2の回転軸6-1の軸方向における突出間隔L1(mm)、その長さL2(mm)及び太さL3(mm)、そしてフリーザーコンベアー5とのクリアランスL4(mm)は拡散分離する粒状脂身1の凍結点前、凍結点初期、凍結点中期、凍結点終期、凍結点後の各攪拌時期に合わせて変える。特に突出間隔L1(mm)を変えることで、粒状脂身1を潰すことなく、効率的に且つ確実に攪拌分離することができるものである。
即ち、凍結が開始する前の凍結点前や表面のみのが凍結して内部が軟らかい粒状脂身1の凍結点初期においては粒状脂身1の加工粒径(mm)よりも突出間隔(mm)を4倍〜8倍程度広くする。これにより、交差回転するほぐし棒6-2群の交差間隔L5(mm)を粒状脂身1の加工粒径(mm)よりも2倍〜5倍程度に設定するものである。
【0023】
また、内部芯まで凍結は至らないが、表面が硬く凍結する凍結点中期や内部芯まで凍結された凍結点終期、そして凍結点後においては脂身の加工粒径(mm)に近づけるように突出間隔(mm)を前記凍結初期時等における間隔(mm)よりも狭くする。これにより、交差間隔(mm)を粒状脂身1の加工粒径(mm)と略同じ程度に設定するものである。
【0024】
この様に構成される攪拌手段6は、フリーザーコンベヤー5により入口2からフリーザー4内に導入されて同フリーザー4の出口3に向けて移送される過程で凍結される粒状脂身1の凍結が開始される前の凍結点前と表面から内部芯へと徐々に凍結される粒状脂身1の凍結点中期との2段階で該脂身1を攪拌分離し得るようにフリーザー4内の前後方向2ヶ所(図では入口2側における冷気発生機7の近くともう一方の冷気発生機7との間の2ヶ所)に夫々設置され(図1参照)、凍結点前においては粒状脂身1を潰すことなく、数個の脂身1同士が付着し合っている大雑把な状態に攪拌分離する。
そして、凍結点中期においては数個が付着し合って板状またはブロック状の粒状脂身1を一粒一粒バラバラに攪拌分離するものである。
即ち、水切り処理された粒状脂身1がフリーザーコンベヤー5によりフリーザー4内に導入され、該フリーザー4内を移送される過程(フリーザー通過(停滞)時間)において表面から内部芯へ凍結が徐々に進行する粒状脂身1を、攪拌手段6により凍結点初期と凍結点中期との2回に分けた2段階で攪拌分離することで、効率的且つ確実に一粒一粒をバラバラに分離凍結する粒状脂身1のバラ化凍結を可能とする。
【0025】
実施例1
加工ラインBにおける前述した各処理工程B-1〜B-6において整形、粒状切断、湯煎、冷却、そして水切り処理が行なわれた豚肉の粒状脂身1を用い、該脂身1のバラ化凍結を下記に示す処理条件にて行ない。その結果を表1,表2に示す。
尚、表1の項目中、ほぐし棒の交差間隔の粗いは10mm程度であり、この場合のほぐし棒の太さがφ6mmで、回転軸の軸方向の突出間隔が32mmである。細かいは3〜6mm程度であり、この場合のほぐし棒の太さがφ2mmで、回転軸の軸方向の突出間隔が10〜16mmである。
処理条件
a.粒状脂身の粒径:3mm
b.粒状脂身の初期重量:1020g
c.凍結方法:サーモスチール方式
d.冷気風速:8m/s
e.フリーザーの庫内温度:−30℃
f.スチールコンベア−の速度:0.34m/min
尚、この時のボイル工程における粒状脂身1の湯煎温度は35〜40℃に設定した。
【0026】
【表1】

Figure 0003923852
【0027】
【表2】
Figure 0003923852
【0028】
この様な条件下で表1,表2に示す実験1〜実験8の導入時温度が25℃〜32℃の粒状脂身1を、夫々フリーザーコンベアー5によりトンネル型フリーザー4内に断続的に導入するバラ化凍結実験を行なった結果、実験1、実験2では粒状脂身1のバラ化凍結が有効に行われず、実験1の場合では200×120の板状に付着し合った板状塊や30〜40mmのブロック状塊が有ることが確認された。
また、実験3では一粒一粒バラバラに分離凍結された粒状脂身が確認されたことで、実験1、実験2の結果より有効であることが分かったが、10〜20mmに付着し合ったブロック状塊と、5mmに付着し合った板状塊が確認された。
また、実験4では実験3よりも10〜20mmに付着し合ったブロック状塊の数が少ないことが確認されたことで、実験3よりも粒状脂身のバラ化凍結が有効に行なわれたことが分かった。
また、実験5、実験6では10〜20mmに付着し合ったブロック状塊の数が多く、一粒一粒に分離凍結された数は少ないことがわかった。
また、実験7ではブロック状塊の数は少なく、その最大値が10mm程度で、一粒一粒のバラバラ割合が多く、粒状脂身の分離凍結が有効に行なわれたことが分かった。
また、実験8では実験7と同じくブロック状塊の最大値が10mm程度であったが、一粒一粒のバラバラ割合が実験7よりも少ないことが分かった。
【0029】
従って、表1及び表2から、粒径が3mmの大きさに加工された粒状脂身1を、前述した処理条件と表1及び表2の項目中の条件によりバラ化凍結処理する際には実験7の結果が特に好ましいことが分かった。
即ち、実験7に示すように、湯煎放置後の水分減少率を−15.0%位まで減少させてバラ化凍結装置のトンネル型フリーザーに断続または連続的に送り込み導入させることにより、粒状脂身1が互いに付着し合った板状塊やブロック状塊の発生数が他の実験結果と比較して少なく、ブロック状塊の最大値が10mm前後であることで、ウインナーやサラミ等を製造するっ食品メーカーが、ウインナーやサラミ原料に混ぜ込む際に計量する等の使用には全く問題がないことから、実験7が良好な結果が得れることが明らかになった。
また、この実験7においてバラバラに分離凍結された粒状脂身1の凍結温度(内部芯温度)を調べて見たところ、表2に示したように18℃となり、十分な凍結度を示していることが分かった。
【0030】
【発明の効果】
本発明の脂身の加工ラインにおけるバラ化凍結装置は叙上の如く構成してなることから、下記の作用効果を奏する。
脂身の粒状加工ラインにおける水切り工程による水切り後の粒状脂身をバラバラに攪拌分離させた状態で凍結して袋詰めパックすることができることから、
従って、従来のように、袋詰めパックされた粒状脂身を冷凍庫に搬入して1晩掛けて凍結する手間がなくなり、その分、生産性の向上が期待できる。
また、大型冷凍庫が不要となることで、設置に掛かる設備費用やそのメンテナンスに掛かる管理費用をカットすることができる。それにより、粒状脂身を副原料として使用するウインナーやサラミ等の食品メーカーに低コストで提供することが可能となる。
【0031】
また、袋詰めバックされた粒状脂身は一粒一粒がバラバラに分離された状態で凍結されていることで、従来のように食品メーカーがブロック状の塊を解凍し尚且つ手作業でバラバラに揉み解す面倒で手間の掛かる解凍作業が不要となる。それにより、取り扱い性が頗る良好になるばかりか、鮮度を落さずに凍結脂身をパック袋から使用分量を取り出してそのままウインナ―やサラミ原料等に混ぜ込むことができることで、食品メーカーにおける生産性の向上と品質の安定性が期待できる。
【0032】
従って、本発明によれば、豚の脂身原料から粒状加工ラインにより粒状に加工された粒状脂身(ボイル脂)を潰すことなく、一粒一粒をバラバラに分離させたバラ化状態で凍結し得るように開発した画期的な脂身の粒状加工ラインにおける脂身のバラ化凍結装置を提供することできる。
【図面の簡単な説明】
【図1】 本発明脂身の加工ラインにおける脂身のバラ化凍結装置の一例を示し、(a)は縦断側面図、(b)は同横断平面図
【図2】 同要部の拡大図
【図3】 攪拌手段の一例を示す斜視図
【図4】 本発明脂身の加工ラインの一例を示す工程ブロック図
【符号の説明】
A:冷凍装置 B:加工ライン
B-1:整形工程 B-2:ダイス工程
B-3:ボイル工程 B-4:冷却工程
B-5:水切り工程 B-6:凍結工程
B-7:包装工程 1:粒状脂身
2:入口 3:出口
4:フリーザー 5:フリーザーコンベアー
6:攪拌手段[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fat-granular processing line that processes pork fat used as an auxiliary ingredient in salami, wiener, hamburger, shumai gyoza and other processed meat products in a granular manner through a step-by-step treatment process, in particular granular. The present invention relates to a fat processing line including a part of the line with a fat freezing apparatus that freezes the processed fat (boiled fat) into a rose shape.
[0002]
[Prior art]
Conventionally, fat (boiled fat) processed into granular form from pork fat raw material in the processing line is packaged and packed in a freezer after completion of the final draining process in the processing line, and the freezer It was frozen at about 1 night.
Then, the frozen fat packed in a bag is stored in a storage until it is taken out of the freezer and shipped to a food manufacturer that manufactures wiener, salami and the like.
[0003]
[Problems to be solved by the invention]
Thus, conventionally, since the packed fat must be frozen for about one night, installation of a large freezer and its maintenance management are required. In particular, the maintenance cost in terms of freezer management is high, and it is necessary to transfer frozen bagging fat from the freezer to the storage.
[0004]
In addition, frozen granular fat is a large block-like lump in the form of a packed pack that adheres (adheres) to each other, so food manufacturers such as wieners and salami that use granular fat as a secondary ingredient Forced to thaw.
In other words, it has conventionally required thawing equipment for thawing, and it has been cumbersome and cumbersome manual work that requires the operator to loosen the thawed granular fat with hands, etc. There was a strong demand from food manufacturers to improve this aspect.
[0005]
In addition, this type of frozen food can be quickly frozen and frozen after processing to maintain its freshness (quality), but conventionally it must be thawed before being mixed with wiener or salami ingredients. By not becoming, the freshness of the granular fat which had been kept fresh due to the frozen state was reduced by thawing, and there was a problem in terms of quality such as the flavor of the fat being impaired.
[0006]
The present invention has been made in view of such a conventional situation, and the intended processing is the processing of a granular fat (boiled fat) processed from a pork fat raw material into a granular shape by a granular processing line. An object of the present invention is to provide a fat-separation freezing apparatus in a fat-granular processing line that has been developed so that it can be frozen in a separated state in which each grain is separated into pieces without being crushed in the extension line.
[0007]
[Means for achieving the object]
In order to achieve the object, the present invention provides a shaping process for removing dirt and foreign matter from pork fat raw material, a die process for processing the shaped fat raw material into granules of an appropriate size, and boiling the granular fat in a hot water bath. A process for cooling the fat after being bathed in a cooling tank, a draining process for removing moisture from the cooled fat, and a freezing process for separating and freezing the granular fat after draining into a granular processing line for fat There,
A tunnel-type freezer having an inlet for introducing the granular fat after draining, and an outlet from which the granular fat that has been separately separated and frozen is led out,
A freezer conveyor that is disposed from the inlet side to the outlet side of the freezer, receives drained granular fat, introduces the fat into the freezer from the inlet, and transfers the fat to the outlet at an appropriate speed. When,
Agitating means disposed in several places in the conveyor direction in the freezer, and agitating means for agitating and separating apart in the process of freezing the granular fat transferred by the conveyor,
The agitating means is a bridge in the width direction of the freezer conveyor and arranged in a counter-rotating manner, and a pair of rotating shafts that rotate inward at an appropriate number of rotations. It consists of loosening rods that protrude at intervals and rotate while crossing each other from the inward rotation of the rotating shaft, so that the granular fat is stirred and separated one by one by the rotational intersection of each loosening rod group facing each other It is in the configuration.
Thereby, it is possible to perform freezing by separating the granular fat into pieces without requiring a separate freezer from the processing line. In addition, food manufacturers that use fat as an auxiliary ingredient, such as wiener and salami, can use frozen granular fat mixed with wiener and salami ingredients in the amount they use without the need for thawing equipment. And
[0008]
Moreover, it is preferable to set the crossing interval of each loosening rod group that intersects the rotation of the stirring means to be substantially the same as or slightly wider than the particle size of the granular fat.
Moreover, it is preferable to set the clearance between the tip of each loosening rod group and the freezer conveyor to be approximately the same as or slightly wider than the particle size of the granular fat.
Moreover, it is preferable that the stirring and separation of the granular fat by the stirring means be performed in at least two stages, before the freezing point of the granular fat and during the middle freezing point where freezing does not reach the internal core of the fat.
Moreover, it is preferable to suppress the moisture reduction rate after cooling treatment and draining treatment of the granular fat in the range of −10 to −15%.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
A specific example of the embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a longitudinal sectional view showing an example of a rose refrigeration apparatus A for granular fat 1 in a processing line B, FIG. 2 is a transverse sectional view thereof, FIG. 3 is a perspective view showing an example of stirring means of the apparatus, and FIG. It is a process block diagram showing each processing process in processing line B in steps.
[0010]
In the process block diagram of processing line B in FIG. 4, B-1 is a shaping process, B-2 is a die process, B-3 is a boil process, B-4 is a cooling process, B-5 is a draining process, B-6 Indicates a freezing step and B-7 indicates a packaging step.
By these processing steps B-1 to B-7, the pork fat raw material is processed into granular fat 1, and this granular fat 1 is frozen into pieces and then packed into bags. Processing is performed in stages.
[0011]
The shaping process B-1 removes inspection marks (ink) and other dirt, and other foreign matter such as body hair and dust attached to the meat from the pork fat raw material (sez shown in the figure) that has been meat-like in a block shape Performs preprocessing.
In the dice process B-2, the processed raw fat material is cut into granular fats 1 having a size (particle size), for example, about 1.5 to 8 mm, according to the use such as wiener and salami.
In the boil process B-3, a hot water treatment is performed in which the granular fat 1 is immersed in a hot water bath at about 92 to 95 ° C. for about 5 to 7 minutes.
In the cooling step B-4, a cooling / sterilization washing process is performed in which the granular fat (boiled fat) 1 subjected to hot water treatment is immersed in water at, for example, about 15 to 18 ° C. for an appropriate time.
In the draining step B-5, a draining process is performed in which moisture is removed from the cooled granular fat 1 by an appropriate pressing force (press or the like) and reduced.
In the freezing step B-6, a loosening freezing process is performed in which the drained granular fat 1 is separated and frozen separately.
In the packaging step B-7, the granular fat 1 that has been frozen into pieces is weighed and packed in a bag.
[0012]
The shaping process B-1, the die process B-2, the boil process B-3, the cooling process B-4, the draining process B-5, and the packaging process B-7 are the individual process equipment in the granular processing line B and other Since it is basically the same as the contents of each process described above performed by the processing means, a detailed description of specific examples of each process apparatus and the like will be omitted.
[0013]
The freezing process B-6 includes a disintegration freezing apparatus A that continuously performs a freezing process for separating and freezing the granular fat 1 that has been drained in the draining process B-5.
This freezing apparatus A includes a tunnel-type freezer 4 having an inlet 2 for introducing granular fat 1 and an outlet 3 for deriving the granular fat 1 separated and frozen separately, and from the inlet 2 side to the outlet 3 side of the freezer 4. A freezer conveyor 5 that receives the granular fat 1 that has been disposed and drained, is introduced into the freezer 4 from the inlet 2 and transferred to the outlet 3 at an appropriate speed, and the freezer 4 It is comprised by the stirring means 6 which is arrange | positioned in several places in the conveyor 5 inside, and stirs and separates separately so that the granular fat 1 conveyed by this conveyor 5 may not adhere and freeze in the process frozen by cold air.
[0014]
The tunnel-type freezer 4 has an approximately kamaboko-shaped or square cross section having an appropriate length in the front and rear directions using a desired wall material or other frame material having a heat insulating effect to prevent heat radiation to the outside and transmission of heat from the outside. The opening which corresponds to the width of the freezer conveyor 5 at the rear wall and the lower part of the front wall, and which can introduce the granular fat 1 that is transferred by the conveyor 5 in a substantially piled state as appropriate. The inlet 2 and the outlet 3 having a height are opened. In addition, it is optional to provide the entrance 2 and the exit 3 with a leakage prevention curtain such as a curtain made of an appropriate material or a screen for preventing cold air in the freezer 4 from flowing out to the outside.
[0015]
The freezer 4 is provided with two cold air generators 7 for blowing cold air toward the inlet 2 side and the outlet 3 side, respectively. Cold air with a wind speed of about 6 to 10 m / s is continuously or intermittently blown at -40 ° C.
As a result, the internal temperature of the freezer 4 is maintained at −25 ° C. to −40 ° C., and the granular fat 1 introduced into the freezer 4 by the freezer conveyor 5 and transported through the freezer 4 at an appropriate speed is stored in the freezer. 4 is frozen at a freezing temperature of about −15 to −20 ° C. (inner core temperature of the granular fat 1) within the freezer passage time derived from No.4.
Depending on the cold air output and the size of the freezer, this cold air generator 7 may be installed as a single unit, or two or more units may be installed, and the number of installations varies depending on the size of the cold air output and the freezer. There is no particular limitation.
[0016]
Further, above the freezer conveyor 5, a vertical blowing rectifying plate that vertically blows cold air blown from the cold air generator 7 over the entire length of the freezer 4 from the inlet 2 side to the outlet 3 side of the freezer 4. 9 is arranged so that the granular fat 1 is effectively frozen in a short time by the vertical blowing of cold air by the current plate 9.
[0017]
The freezer conveyor 5 is a steel belt conveyor. The freezer conveyor 5 extends from the inlet 2 to the outlet 3 of the freezer 4, and the transfer start end side and transfer end side protrude from the inlet 2 and outlet 3 to the outside, respectively. And is intermittently or continuously driven by the power of a variable speed drive (not shown) connected to the drive rotor 10 on the inlet 2 side or the outlet 3 side by a connecting means such as a chain or a V belt. The granular fat 1 that is delivered in a piled state with an appropriate height from the draining step B-5 to the inlet 2 side of the freezer 4 is introduced into the freezer 4 from the inlet 2, and the inside of the freezer 4 is appropriately After being transferred at a speed of 1, the granular fat 1 which is led out of the freezer 4 from the outlet 3 and separated and frozen in the freezer 4 is transferred to the next packaging step B-7. That.
[0018]
The stirring means 6 is introduced into the freezer 4 by the freezer conveyor 5 and transferred to the outlet 3 in the freezer 4 before the freezing point of the granular fat 1, the initial freezing point at which the surface starts freezing, and freezing The middle freezing point that does not reach the core of fat 1, the end of the freezing point where freezing reaches the inner core of fat 1, or the stage after the freezing point where fat 1 completely freezes, in this example, before the freezing point and in the middle freezing point The granular fat 1 is agitated and separated in the two steps, so that the flow of each grain is separated and frozen separately without crushing the granular fat 1.
[0019]
The agitating means 6 includes a pair of rotating shafts 6-1 that are arranged in a bridge and opposite to each other in the width direction of the freezer conveyor 5 and that rotate inwardly at an appropriate number of rotations. 1 consists of unraveling rods 6-2 that protrude radially at an equal interval in the axial direction and rotate while facing each other from the inward rotation of the rotating shaft 6-1. It is configured so that the granular fats 1 are stirred and separated so as not to adhere (adhere) to each other by facing rotation intersections.
[0020]
The pair of rotating shafts 6-1 are bridged and installed in the tunnel type freezer 4 so as to be rotatable in the width direction of the freezer conveyor 5, and are connected to a chain, a belt, or a gear group so as to rotate inward at the same speed. Are connected to each other and rotate synchronously at an appropriate speed by power from a variable speed drive (not shown) that enables speed adjustment.
[0021]
The loosening rod 6-2 protrudes radially from the outer circumference of the pair of rotating shafts 6-1 (cross shape in the figure) at equal intervals in the axial direction, and is caused by the rotation intersection caused by the inward rotation of the rotating shaft 6-1. Each grain can be separated and agitated and separated (separated and frozen) without crushing the granular fat 1 in two stages of the initial freezing point and the middle freezing point.
[0022]
In addition, the protrusion interval L1 (mm) in the axial direction of the rotating shaft 6-1 of the loosening rod 6-2, its length L2 (mm) and thickness L3 (mm), and the clearance L4 (mm) from the freezer conveyor 5 ) Is changed in accordance with the stirring timing of the granular fat 1 to be diffused and separated before the freezing point, early freezing point, middle freezing point, final freezing point, and after freezing point. In particular, by changing the protruding distance L1 (mm), the granular fat 1 can be efficiently and reliably stirred and separated without being crushed.
That is, before the freezing point starts or before the freezing point of the granular fat 1 where only the surface is frozen and the inside is soft, the protruding interval (mm) is set to 4 than the processed particle size (mm) of the granular fat 1. Make it about 8 to 8 times wider. Thereby, the crossing interval L5 (mm) of the loosening rods 6-2 group that cross-rotates is set to about 2 to 5 times the processed particle size (mm) of the granular fat 1.
[0023]
In addition, freezing does not reach the inner core, but at the mid-freezing point where the surface freezes hard, at the end of the freezing point where the inner core is frozen, and after the freezing point, the protruding interval is close to the processed particle size (mm) of the fat (Mm) is made narrower than the interval (mm) in the initial stage of freezing. Thereby, the crossing interval (mm) is set to be approximately the same as the processed particle size (mm) of the granular fat 1.
[0024]
The stirring means 6 configured in this manner starts freezing of the granular fat 1 that is frozen in the process of being introduced from the inlet 2 into the freezer 4 by the freezer conveyor 5 and transferred toward the outlet 3 of the freezer 4. Two places in the freezer 4 in the front-rear direction so that the fat 1 can be stirred and separated in two stages, before the freezing point and before the middle freezing point of the granular fat 1 that is gradually frozen from the surface to the inner core (see FIG. Are installed at two locations between the cool air generator 7 and the other cool air generator 7 on the inlet 2 side (see FIG. 1), and before the freezing point, the granular fat 1 is not crushed and several Stir and separate into a rough state in which the individual fats 1 adhere to each other.
In the middle of the freezing point, several pieces adhere to each other, and the plate-like or block-like granular fats 1 are stirred and separated one by one.
That is, the granular fat 1 that has been drained is introduced into the freezer 4 by the freezer conveyor 5, and the freezing gradually proceeds from the surface to the inner core in the process of being transferred through the freezer 4 (freezer passage (stagnation) time). The granular fat 1 that separates and freezes each grain separately and efficiently by stirring and separating the granular fat 1 in two stages of the initial freezing point and the middle freezing point by the stirring means 6. Enables freezing of roses.
[0025]
Example 1
Using the granular fat 1 of pork that has been subjected to shaping, granular cutting, hot water bathing, cooling, and draining processing in each of the processing steps B-1 to B-6 described above in the processing line B, the freezing of the fat 1 is as follows. Performed under the processing conditions shown in. The results are shown in Tables 1 and 2.
In Table 1, the looseness of the loosening bar is approximately 10 mm. In this case, the thickness of the loosening bar is φ6 mm, and the protruding distance in the axial direction of the rotating shaft is 32 mm. The fineness is about 3 to 6 mm. In this case, the thickness of the loosening rod is φ2 mm, and the axial projection interval of the rotating shaft is 10 to 16 mm.
Processing conditions a. Granular fat particle size: 3mm
b. Initial weight of granular fat: 1020g
c. Freezing method: Thermo steel method d. Cold air speed: 8m / s
e. Freezer chamber temperature: -30 ° C
f. Steel conveyor speed: 0.34m / min
In addition, the hot water temperature of the granular fat 1 in the boil process at this time was set to 35-40 degreeC.
[0026]
[Table 1]
Figure 0003923852
[0027]
[Table 2]
Figure 0003923852
[0028]
Under such conditions, the granular fat 1 having an introduction temperature of 25 ° C. to 32 ° C. shown in Tables 1 and 2 shown in Tables 1 and 2 is intermittently introduced into the tunnel type freezer 4 by the freezer conveyor 5 respectively. As a result of the experiment of freezing of roses, in Experiment 1 and Experiment 2, the freezing of granular fat 1 was not performed effectively, and in the case of Experiment 1, a plate-like lump attached to a plate of 200 x 120 or 30 ~ It was confirmed that there was a block-like lump of 40 mm.
In Experiment 3, it was proved that the granular fat separated and frozen separately from each other was more effective than the results of Experiment 1 and Experiment 2, but the blocks adhered to 10 to 20mm. A plate-shaped lump and a plate-shaped lump adhered to 5 mm were confirmed.
Also, in Experiment 4, it was confirmed that the number of block-like lumps adhering to 10 to 20 mm was smaller than in Experiment 3, so that the granular fat freezing was more effectively performed than in Experiment 3. I understood.
In Experiments 5 and 6, it was found that the number of block-shaped lumps adhering to 10 to 20 mm was large, and the number of pieces separated and frozen one by one was small.
In Experiment 7, it was found that the number of block-like lumps was small, the maximum value was about 10 mm, the ratio of individual grains was large, and the separation and freezing of granular fat was performed effectively.
Further, in Experiment 8, the maximum value of the block-like lump was about 10 mm as in Experiment 7, but it was found that the proportion of each individual piece was smaller than in Experiment 7.
[0029]
Therefore, from Table 1 and Table 2, when the granular fat 1 processed into a particle size of 3 mm is subjected to the freezing treatment according to the above-described processing conditions and the conditions in Table 1 and Table 2, the experiment is performed. A result of 7 was found to be particularly favorable.
That is, as shown in Experiment 7, by reducing the moisture reduction rate after leaving the water bath to about -15.0% and introducing it intermittently or continuously into the tunnel type freezer of the rose freezing apparatus, the granular fats 1 are mutually connected. The number of plate-like lumps and block-like lumps that have adhered to each other is small compared to other experimental results, and the maximum value of the block-like lumps is around 10 mm. Since there is no problem in using such as weighing when mixing into a wiener or salami raw material, it has become clear that Experiment 7 gives a good result.
In addition, when the freezing temperature (inner core temperature) of granular fat 1 separated and frozen in Experiment 7 was examined, it was 18 ° C. as shown in Table 2, indicating a sufficient degree of freezing. I understood.
[0030]
【The invention's effect】
Since the loosening and freezing apparatus in the fat processing line of the present invention is configured as described above, the following effects are obtained.
From the fact that the granular fat after draining by the draining process in the granular processing line of fat can be frozen and packed in a bag in a state of being stirred and separated separately,
Therefore, unlike the conventional case, there is no need to carry the granular fat packed in a bag into a freezer and freeze it overnight, and the productivity can be expected to be increased accordingly.
In addition, since the large-scale freezer is not required, it is possible to cut equipment costs for installation and management costs for maintenance. This makes it possible to provide food manufacturers such as wieners and salami that use granular fat as an auxiliary material at a low cost.
[0031]
In addition, the granular fat that has been packed in bags is frozen in a state in which each grain is separated into pieces, so that food manufacturers have thawed block-like lumps as before, and have been manually broken apart. There is no need for thawing and troublesome thawing work. As a result, not only does the handling improve, but the frozen fat can be taken out from the pack bag without reducing the freshness, and can be directly mixed with the ingredients such as the wine and salami, resulting in productivity in food manufacturers. Improvement of quality and stability of quality can be expected.
[0032]
Therefore, according to the present invention, it is possible to freeze in a disaggregated state in which each grain is separated into pieces without crushing the granular fat (boiled fat) processed from the pork fat raw material into a granular shape by a granular processing line. Thus, it is possible to provide an apparatus for freezing and fat-seating fat in an innovative fat-granular processing line developed as described above.
[Brief description of the drawings]
FIG. 1 shows an example of a fat breaking and freezing apparatus in the present fat processing line, (a) is a longitudinal side view, (b) is a cross-sectional plan view thereof, and FIG. 2 is an enlarged view of the main part. 3] Perspective view showing one example of stirring means [Fig. 4] Process block diagram showing one example of a processing line for fat according to the present invention [Explanation of symbols]
A: Refrigeration equipment B: Processing line
B-1: Shaping process B-2: Dice process
B-3: Boil process B-4: Cooling process
B-5: Draining process B-6: Freezing process
B-7: Packaging process 1: Granular fat 2: Inlet 3: Outlet 4: Freezer 5: Freezer conveyor 6: Stirring means

Claims (5)

豚の脂身原料から汚れや異物を取り除く整形工程、整形後の脂身原料を粒状に加工するダイス工程、粒状脂身を湯煎するボイル工程、湯煎後の粒状脂身を冷却する冷却工程、冷却後の粒状脂身から水分を取り除く水切り工程、水切り後の粒状脂身をバラバラに分離凍結する凍結工程を少なくとも包含する脂身の粒状加工ラインにあって、
前記凍結工程が、水切り処理された粒状脂身を導入させる入口とバラバラに分離凍結された粒状脂身を導出させる出口を有するトンネル型フリーザーと、
このフリーザーの前記入口側から出口側に亘り配設されて、水切り処理された粒状脂身を受け取り、該脂身を前記入口からフリーザー内に導入して前記出口へと適宜の速度にて移送するフリーザーコンベアーと、
前記フリーザー内の適所に配設されてフリーザーコンベアーによりフリーザー内を移送される粒状脂身が凍結される過程でバラバラに攪拌分離する攪拌手段とを備え、
前記攪拌手段が、フリーザーコンベアーの幅方向に架橋状で且つ対向回転状に配設される一対の回転軸と、この回転軸から放射状で軸方向に等間隔にて突出し、回転軸の内向き回転より互いに対向交差しながら回転するほぐし棒群とからなり、各ほぐし棒群の互いに向き合う回転交差により粒状脂身をバラバラに攪拌分離するように構成したことを特徴とする脂身の粒状加工ラインにおける脂身のバラ化凍結装置。
Shaping process to remove dirt and foreign substances from pork fat raw material, die process to process the fat raw material after shaping into granules, boil process to bathe granular fat, cooling process to cool granular fat after hot water bath, granular fat after cooling In a fat granulation line that includes at least a draining process for removing moisture from the water, a freezing process for separating and freezing the granular fat after draining,
A tunnel type freezer having an inlet for introducing the drained granular fat and an outlet for deriving the separated and separated granular fat;
A freezer conveyor that is disposed from the inlet side to the outlet side of the freezer, receives drained granular fat, introduces the fat into the freezer from the inlet, and transfers the fat to the outlet at an appropriate speed. When,
Agitating means for separating and agitating separately in the process of freezing the granular fat disposed in the freezer and transferred through the freezer by the freezer conveyor;
The agitating means is a pair of rotating shafts that are bridged in the width direction of the freezer conveyor and arranged in a counter-rotating manner, and protrudes radially from the rotating shafts at equal intervals in the axial direction. It is composed of a group of loosening rods that rotate while crossing each other more oppositely, and each fattening rod group is configured to stir and separate granular fats separately by rotating intersections facing each other. Rose freezing device.
請求項1記載の攪拌手段の回転交差する各ほぐし棒群の交差間隔を、粒状脂身の粒径と略同じか、それよりも僅かに広く設定したことを特徴とする脂身の粒状加工ラインにおける脂身のバラ化凍結装置。The fat in a granular processing line for fat, characterized in that the crossing interval of each loosening rod group that intersects the rotating means of the stirring means according to claim 1 is set to be approximately the same as or slightly wider than the particle size of the granular fat. Rose freezing equipment. 請求項1または2記載の各ほぐし棒群の先端とフリーザーコンベヤーとのクリアランスを、粒状脂身の粒径と略同じか、それよりも僅かに広く設定したことを特徴とする脂身の粒状加工ラインにおける脂身のバラ化凍結装置。The clearance between the tip of each loosening rod group according to claim 1 or 2 and the freezer conveyor is set to be approximately the same as or slightly wider than the particle size of the granular fat. Fat freezing device. 請求項1乃至3何れか1項に記載の攪拌手段による粒状脂身の攪拌分離が、粒状脂身の凍結点前と、凍結が脂身の内部芯まで至らない凍結点中期との少なくとも2段階で行なわれるようにしたことを特徴とする脂身の粒状加工ラインにおける脂身のバラ化凍結装置。The granular fat is stirred and separated by the stirring means according to any one of claims 1 to 3 at least in two stages: before the freezing point of the granular fat and during the middle freezing point where the freezing does not reach the inner core of the fat. An apparatus for freezing and fat-seating fat in a granular processing line for fat characterized by the above. 請求項1乃至4何れか1項に記載の粒状脂身の水切り減少率を−10〜−15%の範囲内に設定したことを特徴とする脂身の粒状加工ラインにおける脂身のバラ化凍結装置。The apparatus for freeze-frozen fat in a granular processing line for fat, characterized in that the draining reduction rate of the granular fat according to any one of claims 1 to 4 is set within a range of -10 to -15%.
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