JPH0840467A - Sheet for cooked rice - Google Patents
Sheet for cooked riceInfo
- Publication number
- JPH0840467A JPH0840467A JP17903294A JP17903294A JPH0840467A JP H0840467 A JPH0840467 A JP H0840467A JP 17903294 A JP17903294 A JP 17903294A JP 17903294 A JP17903294 A JP 17903294A JP H0840467 A JPH0840467 A JP H0840467A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- cooked rice
- rice
- upper layer
- lower layer
- 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.)
- Granted
Links
Landscapes
- Packages (AREA)
- Wrappers (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、不透液および不通気性
の蓋付き容器、たとえばプラスチック容器内に米飯を入
れて販売する、テイクアウト用米飯において、その米飯
表面と蓋裏との間に介在させるシートに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a take-out cooked rice, which is sold by placing cooked rice in a liquid-impermeable and gas-impermeable container, such as a plastic container, between the surface of the cooked rice and the back of the lid. Regarding the sheet to be interposed.
【０００２】[0002]
【従来の技術】近年、食生活の多様化に伴って、いわゆ
る外食産業が盛んであり、テイクアウト用おべんとうの
販売が多くなっている。2. Description of the Related Art In recent years, with the diversification of eating habits, the so-called restaurant industry has been flourishing, and the sales of take-out bowls have increased.
【０００３】ご飯は、プラスチック容器内に入れて販売
された後、その温度で水分が湯気として蒸発し、容器内
面に結露することが知見されている。結露した水分はや
がてご飯に落下し、その表面はベトツキ、水滴の落下し
てご飯の表面より下層、および水滴の落下しない箇所は
パサツキ、食味を悪化させ、また蓋を開けたとき、その
蓋裏に結露が残り、その蓋をテーブル上に置いたとき、
そのテーブルを汚すことがある。It has been found that, after rice is put in a plastic container for sale, the water evaporates as steam at the temperature of the rice to cause dew condensation on the inner surface of the container. Condensed water eventually falls onto the rice, the surface is sticky, the water drops fall below the surface of the rice, and the part where the water drops do not feel dry or the taste deteriorates. When there is dew on the table and the lid is placed on the table,
It can make the table dirty.
【０００４】[0004]
【発明が解決しようとする課題】しかし、この問題に対
して、従来、有効な手段がない。たとえば、実開平３−
１０８６７１号公報に記載のシートを配置したとして
も、湯気が中間の吸水性シートに吸水され、ある程度の
効果はあるとしても、ご飯の場合には、大量の湯気が発
生するので、その吸水性シートに全量を吸収することは
できない。また、このシートは、外層が不通気性シート
であるために、湯気が透過することはない。However, conventionally, there is no effective means for this problem. For example, Actual Kaihei 3-
Even if the sheet described in Japanese Patent No. 108671 is arranged, the steam is absorbed by the intermediate water-absorbing sheet, and even if there is some effect, in the case of rice, a large amount of steam is generated. It cannot absorb the whole amount. Moreover, since the outer layer of this sheet is an impermeable sheet, steam does not permeate.
【０００５】したがって、本発明の課題は、湯気は透過
し、透過した湯気が結露したとしても、ご飯側には戻る
ことがなく、したがって、ご飯がベトツクことがなく、
また、湯気の透過を調整し、湯気が透過し過ぎることが
なく、したがってご飯がパサツキことがなく、食味の低
下を防止できる米飯用シートを提供することにある。Therefore, an object of the present invention is that the steam permeates, and even if the permeated steam condenses, it does not return to the rice side, so that the rice is not sticky.
Another object of the present invention is to provide a cooked rice sheet that adjusts steam permeation so that steam does not permeate excessively, so that the rice does not become dry and the taste is not deteriorated.
【０００６】[0006]
【課題を解決するための手段】上記課題は、不透液およ
び不通気性の蓋付き容器内に米飯を入れ、その米飯表面
と蓋裏との間に介在させるシートであって、ポリプロピ
レンの不織布の３〜２００ｇ／m2の通気性下層と、１２
〜５０ｇ／m2の木材パルプの抄紙シートからなる吸水性
上層とが、接着剤の塗布量として０．５〜３０．０ｇ／
m2をもってラミネートされ、前記シートは他の層を有せ
ず、前記下層は米飯側に上層は蓋側に配置されるもので
あり、前記上層の密度は０．０１〜０．８ｇ／m3で、か
つ下層の密度は０．０１〜０．８ｇ／m3であることで解
決できる。[Means for Solving the Problems] The above-mentioned problem is a sheet in which cooked rice is placed in a container with a liquid-impermeable and air-impermeable lid and is interposed between the surface of the cooked rice and the back of the lid. 3 to 200 g / m 2 of breathable underlayer of 12
˜50 g / m 2 and a water-absorbent upper layer consisting of a wood pulp papermaking sheet, and the amount of adhesive applied is 0.5 to 30.0 g /
The sheet is laminated with m 2 and the sheet has no other layers, the lower layer is placed on the cooked rice side and the upper layer is placed on the lid side, and the density of the upper layer is 0.01 to 0.8 g / m 3 And the density of the lower layer is 0.01 to 0.8 g / m 3 and can be solved.
【０００７】この場合、シートを１０枚重ねて測定した
ときにおける透気度（ＪＩＳ Ｐ８１１７）が、１００
秒以下であり、前記上層のクレープ率が１〜４０％であ
ることが好適である。In this case, the air permeability (JIS P8117) measured when 10 sheets were piled up was 100.
It is preferably not more than seconds and the crepe ratio of the upper layer is 1 to 40%.
【０００８】[0008]
【作用】本発明では、図２に示すように、下層２１がポ
リプロピレン不織布からなるので通気性を示すととも
に、疎水性を示す。また、上層２２は木材パルプからな
るので、吸水性を示すとともに、通気性も示す。In the present invention, as shown in FIG. 2, since the lower layer 21 is made of polypropylene nonwoven fabric, it exhibits breathability and hydrophobicity. Further, since the upper layer 22 is made of wood pulp, it exhibits water absorption and air permeability.
【０００９】その結果、ご飯３からの湯気Ｖは、シート
２全体を通過し、蓋１Ｂの裏面まで達する。この蓋１Ｂ
の裏面においては外気との温度差により結露Ｓが生じ
る。結露Ｓが落下した場合には、シート２の上層２２に
おいて吸水される。この吸水された水分は、下層２１が
ポリプロピレンの繊維不織布からなるので疎水性であ
り、下層２１を透過して、ご飯３の表面まで透過はしな
い。したがって、従来のように、ご飯がベトツクことは
ない。As a result, the steam V from the rice 3 passes through the entire sheet 2 and reaches the back surface of the lid 1B. This lid 1B
Condensation S occurs on the back surface of the sheet due to the temperature difference from the outside air. When the condensation S drops, the upper layer 22 of the sheet 2 absorbs water. The absorbed water is hydrophobic because the lower layer 21 is made of polypropylene fiber non-woven fabric, and is hydrophobic, so that it permeates the lower layer 21 and does not permeate to the surface of the rice 3. Therefore, unlike the conventional case, the rice is not sticky.
【００１０】また、シートの通気性が良好に調整されて
いるので、湯気が透過し過ぎることがなく、したがって
ご飯からの湯気が出るのを抑制し、パサツキを防止でき
る。Further, since the air permeability of the sheet is adjusted well, the steam does not permeate too much, so that the steam from the rice can be suppressed and the dryness can be prevented.
【００１１】他方、下層２１はご飯３の表面と直接接触
するが、下層２１がポリプロピレンの繊維からなる不織
布層であるために、ご飯３が付着することはない。On the other hand, the lower layer 21 is in direct contact with the surface of the rice 3, but the rice 3 does not adhere because the lower layer 21 is a nonwoven fabric layer made of polypropylene fibers.
【００１２】本発明における別の特徴は、前記公報記載
のように、３層シート構造とすることなく、通気性下層
と吸水性上層との２層構造としたものである。前記公報
記載の３層構造では、食品の包装材としては有効である
としても、本発明が対象とする米飯表面と容器の蓋裏と
の間に介在させるシートとしては使用できない。すなわ
ち、内層の疎水性繊維シートを透過した水蒸気を吸水性
繊維シートで吸水するとしても、同公報が言う不通気性
シートの存在がバリヤーとなり、結果として、前記吸水
性繊維シートでの吸水量がきわめて少なくなり、米飯容
器のように、大量の水蒸気が発生するものには到底使用
できず、食味の改善には殆ど有効でない。しかも、不通
気性シートを設けることによるコスト高を招く。Another feature of the present invention is, as described in the above publication, not a three-layer sheet structure but a two-layer structure of a breathable lower layer and a water absorbing upper layer. Although the three-layer structure described in the above publication is effective as a packaging material for foods, it cannot be used as a sheet to be interposed between the surface of cooked rice and the back of a container, which is the object of the present invention. That is, even if water vapor permeating the hydrophobic fiber sheet of the inner layer is absorbed by the water-absorbent fiber sheet, the presence of the impermeable sheet referred to in the publication becomes a barrier, and as a result, the amount of water absorbed by the water-absorbent fiber sheet is increased. It becomes extremely small, and it cannot be used for anything that generates a large amount of steam, such as a cooked rice container, and it is hardly effective for improving the taste. Moreover, the cost is increased due to the provision of the impermeable sheet.
【００１３】さらに、本発明では、通気性下層と吸水性
上層とは０．５〜３０．０ｇ／m2の塗布量をもって接着
剤により積層した。熱エンボスや超音波熱接合などを用
いることを当初考えたが、本発明では特に吸水性上層が
木材パルプの抄紙シートからなるので、接着性が十分で
なく、特に米飯からの熱を受けて接着強度が弱まり、か
つ水蒸気を受けて抄紙シートがふやけたとき剥離が生じ
やすい。また、熱を与えると、通気性下層シートがポリ
エチレン不織布からなるので、溶融として通気孔を目詰
まりさせて、目的の通気性が得られない。この点、接着
剤を用いる場合には、これらの現象を回避できるととも
に、風合いが良好である。Further, in the present invention, the breathable lower layer and the water absorbent upper layer are laminated with an adhesive at a coating amount of 0.5 to 30.0 g / m 2 . Initially thought of using heat embossing or ultrasonic heat bonding, but in the present invention, since the water-absorptive upper layer is made of a wood pulp papermaking sheet, the adhesiveness is not sufficient, especially when heat is applied from cooked rice to bond. The strength of the papermaking sheet is weakened, and peeling easily occurs when the papermaking sheet is softened by receiving steam. Further, when heat is applied, the breathable lower layer sheet is made of a polyethylene non-woven fabric, so that it is melted to clog the vent holes and the desired breathability cannot be obtained. In this respect, when an adhesive is used, these phenomena can be avoided and the texture is good.
【００１４】[0014]
【実施例】以下本発明を図面を参照しながら実施例によ
りさらに詳説する。図１は本発明の米飯用シートの使用
状態を示すもので、不透液および不通気性の蓋付き容器
１、たとえばプラスチック容器の本体容器１Ａ内に米飯
３を入れ、その米飯表面と蓋１Ｂとの間に、本発明の米
飯用シート２が介在される。The present invention will be described in more detail by way of examples with reference to the drawings. FIG. 1 shows the state of use of the cooked rice sheet of the present invention, in which a cooked rice 3 is placed in a container 1 with a liquid-impermeable and air-impermeable lid, for example, a main body container 1A of a plastic container, and the cooked rice surface and lid 1B. The sheet 2 for cooked rice of the present invention is interposed between and.
【００１５】この米飯用シート２は、０．９〜１２０デ
ニール、特に０．９〜１０デニールであるポリプロピレ
ンの不織布の３〜２００ｇ／m2、望ましくは１２〜５０
ｇ／m2の通気性下層２１と、１２〜５０ｇ／m2、望まし
くは１５〜３０ｇ／m2、より好ましくは１８〜２７ｇ／
m2の木材パルプの抄紙シートからなる吸水性上層２２と
が、接着剤層２３によりラミネートされ、その塗布量と
しては０．５〜３０．０ｇ／m2、望ましくは０．５〜
２．０ｇ／m2とされる。This cooked rice sheet 2 has a polypropylene non-woven fabric having a denier of 0.9 to 120, preferably 0.9 to 10 denier, 3 to 200 g / m 2 , preferably 12 to 50.
g / m 2 breathable lower layer 21 and 12 to 50 g / m 2 , preferably 15 to 30 g / m 2 , more preferably 18 to 27 g /
A water-absorptive upper layer 22 made of a m 2 wood pulp paper sheet is laminated with an adhesive layer 23, and the coating amount thereof is 0.5 to 30.0 g / m 2 , preferably 0.5 to
It is set to 2.0 g / m 2 .
【００１６】この場合、シート２は他の層、たとえば従
来公知のシートのように、不通気性シートを有せず、前
記下層２１は米飯３側に上層は蓋１Ｂ側に配置される。In this case, the sheet 2 does not have an impermeable sheet unlike other sheets such as a conventionally known sheet, and the lower layer 21 is arranged on the side of the cooked rice 3 and the upper layer is arranged on the side of the lid 1B.
【００１７】通気性下層２１は、ポリプロピレンの不織
布からなる。ポリエチレン、ポリエステル、レーヨン不
織布なども考えられるが、ご飯との付着性があり、また
吸水性を示すので、これらは好ましくなく、ポリプロピ
レンの不織布が最適であることを知見した。The breathable lower layer 21 is made of polypropylene non-woven fabric. Polyethylene, polyester, rayon non-woven fabric and the like are also conceivable, but they are not preferable because they have adhesiveness to rice and show water absorption, and they have found that polypropylene non-woven fabric is most suitable.
【００１８】ポリプロピレンの不織布の目付は３〜５０
ｇ／m2とされる。ここで、支配的なのは、密度であり、
０．０１〜０．８ｇ／m3とされる。密度が０．０１ｇ／
m3未満では、上層が吸水した水分をご飯側に透過させ
て、そのご飯をべとつかせることがある。また、０．８
ｇ／m3を超えると、通気性を阻害する。Polypropylene nonwoven fabric has a basis weight of 3 to 50
g / m 2 . Here, it is the density that is dominant,
It is set to 0.01 to 0.8 g / m 3 . Density is 0.01g /
If it is less than m 3 , the water absorbed by the upper layer may be transmitted to the rice side, and the rice may become sticky. Also, 0.8
If it exceeds g / m 3 , air permeability is impaired.
【００１９】上層は、１２〜５０ｇ／m2の木材パルプの
抄紙シートからなる。目付量が少ないと吸水性が良好で
なく、逆に目付量が大きいと材料コストが嵩むばかりで
なく、通気性を阻害する。この上層としては、ＬＢＫ
Ｐ：ＮＢＫＰ＝１：０．３〜１．５程度として、通常の
抄紙法により得ることができる。湿潤紙力増強剤などの
公知の添加剤を添加することが当然にできる。この上層
においても、密度が支配的であり、０．０１〜０．８ｇ
／m3とされる。この上下限の理由は、下層の理由と同一
である。特に好ましくは、クレープ紙である。クレープ
率は、１〜４０％、特に好ましくは３〜１５％である。
クレープをかけると、吸水量が多くなる。The upper layer comprises a papermaking sheet of 12-50 g / m 2 of wood pulp. If the basis weight is small, the water absorption is not good, and conversely, if the basis weight is large, not only the material cost increases, but also the air permeability is impaired. As the upper layer, LBK
P: NBKP = 1: 0.3 to 1.5 can be obtained by an ordinary papermaking method. Naturally known additives such as wet strength agents can be added. Also in this upper layer, the density is dominant, and 0.01 to 0.8 g
/ M 3 The reason for the upper and lower limits is the same as the reason for the lower layer. Particularly preferred is crepe paper. The crepe ratio is 1 to 40%, particularly preferably 3 to 15%.
Water absorption increases when creped.
【００２０】接着剤２３としては、たとえばウレタン系
などの適宜の接着剤を塗布量（乾燥重量）として０．５
〜３０ｇ／m2をもって塗布し、下層と上層とを接着によ
りラミネートする方法によれば、どのような上下層素材
でも接着でき、風合いの柔らかいものが得られる利点が
ある。塗布量が０．５ｇ／m2ではラミネート強度が低
く、逆に３０ｇ／m2を超えると通気性を阻害する。この
接着剤は全面のべた塗りのほか、たとえば格子状などの
間欠塗布により、塗布することができる。格子の塗布面
積および塗布濃度の調整により、湯気の透過量を自由に
調整できる。接着剤として、ポリエステル系ウレタン、
ポリエーテル系ウレタンなども用いることができる。As the adhesive 23, for example, an appropriate adhesive such as urethane-based adhesive is applied in a coating amount (dry weight) of 0.5.
According to the method of coating at about 30 g / m 2 and laminating the lower layer and the upper layer by bonding, there is an advantage that any upper and lower layer materials can be bonded and a soft texture can be obtained. When the coating amount is 0.5 g / m 2 , the laminate strength is low, and when it exceeds 30 g / m 2 , the air permeability is impaired. This adhesive can be applied not only by solid coating on the entire surface but also by intermittent coating such as a grid pattern. The amount of steam permeation can be freely adjusted by adjusting the coating area and coating concentration of the grid. Polyester urethane, as an adhesive
Polyether urethane and the like can also be used.
【００２１】一方、シートの全体の透気度（ＪＩＳ Ｐ
８１１７）としては、製品シートを１０枚重ねて測定
したときにおいて、１００秒以下、望ましくは５０秒以
下、特に好ましくは１０秒以下である。On the other hand, the air permeability of the entire sheet (JIS P
8117) is 100 seconds or less, preferably 50 seconds or less, and particularly preferably 10 seconds or less when 10 product sheets are stacked and measured.
【００２２】本発明のシートは、枚葉のほか、好ましく
は図３に示すように、トイレットペーパーのように、ロ
ール状に巻いて、所定長さ（ご飯表面全体を覆う大き
さ）ごとミシン目１０Ａを形成したロール１０である。
かかる形態によれば、店頭において、ロール１０を適宜
のホルダーに保持した後、販売の都度、ミシン目１０Ａ
から切り離してご飯表面を被覆できる。The sheet of the present invention is preferably wound in a roll shape like a toilet paper as shown in FIG. It is roll 10 which formed 10A.
According to this mode, after the roll 10 is held in an appropriate holder at the store, it is perforated 10A each time it is sold.
The surface of the rice can be covered by separating from.
【００２３】[0023]
【発明の効果】以上のとおり、本発明によれば、湯気は
透過し、透過した湯気が結露したとしても、ご飯側には
戻ることがなく、したがって、ご飯がベトツクことがな
く、また湯気の透過量を調整することにより、ご飯のパ
サツキを抑制でき、食味の低下を防止できるなどの利点
がもたらされる。As described above, according to the present invention, steam permeates, and even if the permeated steam condenses, it does not return to the rice side. Therefore, the rice is not sticky and steam By adjusting the amount of permeation, the dryness of rice can be suppressed and the deterioration of the taste can be prevented.
【図１】本発明のシートの使用状態の要部断面図であ
る。FIG. 1 is a cross-sectional view of an essential part of a seat of the present invention in a use state.
【図２】シート構成の断面図である。FIG. 2 is a sectional view of a seat configuration.
【図３】ロール巻き形態のシートの斜視図である。FIG. 3 is a perspective view of a roll-wound sheet.
１…容器、１Ａ…本体容器、１Ｂ…蓋、２…米飯用シー
ト、１０…ロール、２１…下層、２２…上層、２３…接
着剤。DESCRIPTION OF SYMBOLS 1 ... Container, 1A ... Main body container, 1B ... Lid, 2 ... Rice sheet, 10 ... Roll, 21 ... Lower layer, 22 ... Upper layer, 23 ... Adhesive.
Claims (2)
飯を入れ、その米飯表面と蓋裏との間に介在させるシー
トであって、 ポリプロピレンの不織布の３〜２００ｇ／m2の通気性下
層と、１２〜５０ｇ／m2の木材パルプの抄紙シートから
なる吸水性上層とが、接着剤の塗布量として０．５〜３
０．０ｇ／m2をもってラミネートされ、 前記シートは他の層を有せず、前記下層は米飯側に上層
は蓋側に配置されるものであり、前記上層の密度は０．
０１〜０．８ｇ／m3で、かつ下層の密度が０．０１〜
０．８ｇ／m3であることを特徴とする米飯用シート。1. A sheet in which cooked rice is placed in a liquid-impermeable and gas-impermeable container with a lid and is interposed between the surface of the cooked rice and the back of the lid, which is made of polypropylene non-woven fabric of 3 to 200 g / m 2 . The breathable lower layer and the water-absorbent upper layer made of a wood pulp paper sheet of 12 to 50 g / m 2 have an adhesive coating amount of 0.5 to 3
Laminated with 0.0 g / m 2 , the sheet has no other layers, the lower layer is placed on the cooked rice side and the upper layer is placed on the lid side, and the density of the upper layer is 0.
01-0.8 g / m 3 and the density of the lower layer is 0.01-
A sheet for cooked rice, which is 0.8 g / m 3 .
る透気度（ＪＩＳ Ｐ８１１７）が、１００秒以下であ
り、前記上層のクレープ率が１〜４０％である請求項１
記載の米飯用シート。2. The air permeability (JIS P8117) when measured by stacking 10 sheets is 100 seconds or less, and the crepe ratio of the upper layer is 1 to 40%.
The sheet for cooked rice described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17903294A JP3600637B2 (en) | 1994-07-29 | 1994-07-29 | Cooked rice sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17903294A JP3600637B2 (en) | 1994-07-29 | 1994-07-29 | Cooked rice sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0840467A true JPH0840467A (en) | 1996-02-13 |
| JP3600637B2 JP3600637B2 (en) | 2004-12-15 |
Family
ID=16058926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17903294A Expired - Lifetime JP3600637B2 (en) | 1994-07-29 | 1994-07-29 | Cooked rice sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3600637B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009274770A (en) * | 2004-08-25 | 2009-11-26 | Graphic Packaging Internatl Inc | Absorbent microwave interactive packaging |
| JP2013209125A (en) * | 2012-03-30 | 2013-10-10 | Kaneka Corp | Laminated thin film body |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6045013B2 (en) | 2007-10-26 | 2016-12-14 | 日東電工株式会社 | Double-sided pressure-sensitive adhesive sheet and manufacturing method thereof |
-
1994
- 1994-07-29 JP JP17903294A patent/JP3600637B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009274770A (en) * | 2004-08-25 | 2009-11-26 | Graphic Packaging Internatl Inc | Absorbent microwave interactive packaging |
| JP2013209125A (en) * | 2012-03-30 | 2013-10-10 | Kaneka Corp | Laminated thin film body |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3600637B2 (en) | 2004-12-15 |
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