JP2015063326A - Container - Google Patents

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JP2015063326A
JP2015063326A JP2013198312A JP2013198312A JP2015063326A JP 2015063326 A JP2015063326 A JP 2015063326A JP 2013198312 A JP2013198312 A JP 2013198312A JP 2013198312 A JP2013198312 A JP 2013198312A JP 2015063326 A JP2015063326 A JP 2015063326A
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container
unevenness
concave
irregularities
interval
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JP6163070B2 (en
Inventor
小山 政利
Masatoshi Koyama
政利 小山
洋樹 晴▲まき▼
Hiroki Harumaki
洋樹 晴▲まき▼
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Chuo Kagaku Co Ltd
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Chuo Kagaku Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a container excellent in heat insulation effect, difficult to slide down, and easy to wash the inner face side.SOLUTION: A foamed resin container is formed with unevenness having an unevenness interval of 1,000-3,000 μm, and a recessed depth (or a projecting height) of 150-450 μm on the outer surface of a desired part of the container, and is not formed with unevenness caused by the unevenness of the outer surface of the container having the unevenness interval of 1,000-3,000 μm, and the recessed depth (or the projecting height) of 150-450 μm on the inner surface of the container. A wall thickness of the container in a flat face part not formed with the unevenness is 500-2,500 μm.

Description

本発明は容器に関する。   The present invention relates to a container.

断熱性に優れた発泡樹脂を用いて構成された容器が提案されている。例えば、発泡樹脂シートが所定形状に成形された容器本体部と、発泡樹脂シートが所定形状に成形された蓋部とを備えた容器が、提案されている。食材が入れられた前記発泡樹脂製の容器は、電子レンジ等によって、前記食材が加熱されても、前記容器自体は前記食材ほどには温度が高くない。容器を手にしても、熱さを感じ難い。   A container constituted by using a foamed resin having excellent heat insulation properties has been proposed. For example, a container including a container main body portion in which a foamed resin sheet is formed into a predetermined shape and a lid portion in which the foamed resin sheet is formed into a predetermined shape has been proposed. Even if the foodstuff is heated by a microwave oven or the like, the container itself is not as hot as the foodstuff. Even if you hold the container, it is hard to feel the heat.

しかし、熱さを感じ難いと言っても、全く、問題が無いと言う訳ではない。やはり、多少なりとも、熱い。   However, even if it is hard to feel the heat, it does not mean that there is no problem at all. After all, it is hot.

特開2001−139014号公報JP 2001-139014 A

従って、本発明が解決しようとする第1の課題は、断熱効果が改善された容器を提供することである。   Therefore, the first problem to be solved by the present invention is to provide a container having an improved heat insulating effect.

本発明が解決しようとする第2の課題は、手で持った際、滑り落とし難い容器を提供することである。   The second problem to be solved by the present invention is to provide a container that hardly slides down when held by hand.

本発明が解決しようとする第3の課題は、内面側が綺麗に洗い易い容器を提供することである。   The third problem to be solved by the present invention is to provide a container whose inner surface is easy to clean cleanly.

本発明が解決しようとする第4の課題は、低廉な容器を提供することである。   The fourth problem to be solved by the present invention is to provide an inexpensive container.

本発明は、
発泡樹脂製の容器であって、
凹凸間隔が1000〜3000μm、凹深さ(又は凸高さ)が150〜450μmの凹凸が、前記容器の所望個所の外表面に、形成されており、
凹凸間隔が1000〜3000μm、凹深さ(又は凸高さ)が150〜450μmの前記容器の外表面の前記凹凸に起因した凸凹が、前記容器の内表面に、形成されてなく、
前記凹凸が形成されていない平面個所における前記容器の肉厚は500〜2500μmである
ことを特徴とする容器を提案する。
The present invention
A container made of foamed resin,
Concavities and convexities having a concave-convex interval of 1000 to 3000 μm and a concave depth (or convex height) of 150 to 450 μm are formed on the outer surface of a desired portion of the container,
Unevenness due to the unevenness on the outer surface of the container having an unevenness interval of 1000 to 3000 μm and a concave depth (or convex height) of 150 to 450 μm is not formed on the inner surface of the container,
Proposed is a container characterized in that the thickness of the container at a flat surface where the irregularities are not formed is 500 to 2500 μm.

本発明は、
発泡樹脂製の容器であって、
凹凸間隔が1000〜3000μm、凹深さ(又は凸高さ)が150〜450μmの凹凸が、前記容器の所望個所の外表面に、形成されており、
凹凸間隔が1000〜3000μm、凹深さ(又は凸高さ)が150〜450μmの凹凸が、前記容器の内表面に、形成されておらず、
前記凹凸が形成されていない平面個所における前記容器の肉厚は500〜2500μmである
ことを特徴とする容器を提案する。
The present invention
A container made of foamed resin,
Concavities and convexities having a concave-convex interval of 1000 to 3000 μm and a concave depth (or convex height) of 150 to 450 μm are formed on the outer surface of a desired portion of the container,
Concavities and convexities with a concave-convex interval of 1000 to 3000 μm and a concave depth (or convex height) of 150 to 450 μm are not formed on the inner surface of the container,
Proposed is a container characterized in that the thickness of the container at a flat surface where the irregularities are not formed is 500 to 2500 μm.

本発明は、
前記容器であって、
凹凸間隔が1000〜3000μm、凹深さ(又は凸高さ)が150〜450μmの凹凸が、前記容器の容器本体部の底面部および/または側面部における所望個所の外表面に、形成されている
ことを特徴とする容器を提案する。
The present invention
Said container,
Concavities and convexities having a concave-convex interval of 1000 to 3000 μm and a concave depth (or convex height) of 150 to 450 μm are formed on the outer surface of a desired location in the bottom and / or side of the container body of the container. A container characterized by this is proposed.

本発明は、
前記容器であって、
凹凸間隔が1000〜3000μm、凹深さ(又は凸高さ)が150〜450μmの凹凸が、前記容器の蓋部の天面部および/または側面部における所望個所の外表面に、形成されている
ことを特徴とする容器を提案する。
The present invention
Said container,
Concavities and convexities having a concave-convex interval of 1000 to 3000 μm and a concave depth (or convex height) of 150 to 450 μm are formed on the outer surface of a desired location in the top and / or side of the lid of the container. We propose a container characterized by

本発明は、
前記容器であって、
前記容器の外表面に形成されている凹凸は、凹凸間隔が1400〜2000μm、凹深さ(又は凸高さ)が180〜350μmである
ことを特徴とする容器を提案する。
The present invention
Said container,
As for the unevenness formed on the outer surface of the container, a container is proposed in which the unevenness interval is 1400 to 2000 μm and the concave depth (or convex height) is 180 to 350 μm.

本発明は、
前記容器であって、
前記容器の内表面における凹凸の凹深さ(又は凸高さ)は、最大でも、30μmである
ことを特徴とする容器を提案する。
The present invention
Said container,
The container is characterized in that the concave depth (or convex height) of the irregularities on the inner surface of the container is 30 μm at the maximum.

本発明は、
前記容器であって、
前記容器の内表面における凹凸幅は、最小でも、5000μmである
ことを特徴とする容器を提案する。
The present invention
Said container,
A container is proposed in which the uneven width on the inner surface of the container is at least 5000 μm.

本発明は、
前記容器であって、
前記凹凸の断面は略円弧形状である
ことを特徴とする容器を提案する。
The present invention
Said container,
A container is proposed in which the cross-section of the irregularities is substantially arc-shaped.

本発明は、
前記容器であって、
前記凹凸は線状である
ことを特徴とする容器を提案する。
The present invention
Said container,
The container is characterized in that the irregularities are linear.

本発明は、
前記容器であって、
前記発泡樹脂は気泡径が40〜100μmである
ことを特徴とする容器を提案する。
The present invention
Said container,
A container characterized in that the foamed resin has a cell diameter of 40 to 100 μm is proposed.

本発明は、
前記容器であって、
非発泡性の表面層と、非発泡性の裏面層と、前記表面層と前記裏面層との間に設けられた発泡層とが積層されたシートが成形されてなる
ことを特徴とする容器を提案する。
The present invention
Said container,
A container formed by molding a sheet in which a non-foaming surface layer, a non-foaming back layer, and a foam layer provided between the surface layer and the back layer are formed. suggest.

外表面に形成された凹凸と、発泡層とによって、断熱効果が高い。従って、容器を手にしても、熱さを感じ難い。   The heat insulating effect is high due to the unevenness formed on the outer surface and the foamed layer. Therefore, even if the container is held in hand, it is difficult to feel the heat.

外表面に形成された凹凸によって、容器を手にした際、容器は滑り落ち難い。   Due to the unevenness formed on the outer surface, the container is difficult to slip when it is picked up.

外表面には前記効果を奏する凹凸が形成されているものの、内表面には外表面に形成されている如きの凹凸は形成されていない。すなわち、内表面は平滑性が高い。大きな凹凸が有るにしても、内表面はツルツル状態であると言うことも出来る。従って、凹凸に物が挟まると言ったことは起きない。このことは、内面側を綺麗に洗い易い。   Although the outer surface is provided with irregularities that exhibit the above-described effects, the inner surface is not provided with irregularities such as those formed on the outer surface. That is, the inner surface is highly smooth. Even if there are large irregularities, it can be said that the inner surface is in a smooth state. Therefore, it does not happen that an object gets caught in unevenness. This is easy to clean the inner surface side cleanly.

材料が少なくて済む。この為、容器コストは低廉である。   Less material is required. For this reason, the container cost is low.

開蓋時における容器の斜視図Perspective view of the container when the lid is opened 容器本体部の斜視図Perspective view of container body 容器本体部の断面図Cross section of container body 蓋部の断面図Cross section of the lid

本発明は容器である。前記容器の実施形態が説明される。前記容器は、発泡樹脂材が用いられて構成された。例えば、発泡樹脂シートが用いられて構成された。発泡樹脂シートが熱成形されて構成された。発泡樹脂シートが真空成形されて構成された。前記容器の所望個所の外表面に凹凸が形成されている。これまでにも、凹凸が形成された容器は存在していた。しかし、本発明では、前記特長を奏させる為、前記凹凸は、凹凸間隔が1000〜3000μm(好ましくは、1400μm以上。好ましくは、2000μm以下。)、凹深さ(又は凸高さ)が150〜450μm(好ましくは、180μm以上。好ましくは、350μm以下。)である。勿論、前記範囲外の凹凸が有っても、差し支えない。但し、前記範囲外の凹凸のみでは前記特長が奏されない。例えば、凹凸間隔が5000μmを越えた大きな値の凹凸では、容器を手にした際、手の表面が広い範囲に亘って凹凸面に接する。この為、凹凸に起因した接触面積の低下に基づく断熱効果は小さくなる。かつ、滑り止め防止効果も期待され難い。すなわち、容器が滑り落ち易い。このようなことから、容器の外表面に形成する凹凸は前記特徴の凹凸である。更に、外表面に形成する凹凸を前記特徴の凹凸としたが故に、内表面には前記凹凸に起因した凸凹が出来なかった。すなわち、二次元のシートを熱成形(真空成形)によって三次元の容器にした場合、通常、外表面の凹凸が内表面側に転写され、内表面には凸凹が形成される。本発明者は、前記特徴の凸凹(凹凸)が内表面に形成されていると、好ましくないことに気付いた。そこで、外表面に形成された如きの凹凸(凹凸間隔が1000〜3000μm、凹深さ(又は凸高さ)が150〜450μmの凹凸)が、内表面には形成されないようにする為には、どのようにすれば良いかが検討された。その結果、外表面に形成する凹凸を前記数値範囲内の凹凸とした場合、この凹凸に起因した凸凹(内表面側に転写された凹凸)は出来ないことが突き止められた。従って、断熱効果や滑止防止効果のみならず、内表面側への凹凸転写防止の観点からも、外表面に形成する凹凸を前記数値範囲内の凹凸にすることが大事であった。本発明では、前記容器の外表面の前記凹凸に起因した凸凹(凹凸間隔が1000〜3000μm、凹深さ(又は凸高さ)が150〜450μmの凸凹)が、前記容器の内表面に、形成されてなかった。これが本発明の大きな特徴である。好ましくは、前記転写に基づく凸凹(凹凸)のみならず、凹凸(凹凸間隔が1000〜3000μm、凹深さ(又は凸高さ)が150〜450μm)が、そもそも、形成されていない。前記凹凸が形成されていない個所(通常、容器を把持する事が想定される平面個所)における前記容器の肉厚は500〜2500μm(好ましくは、600μm以上。好ましくは、1700μm以下。)であった。肉厚が薄すぎた場合、前記外表面に形成の凹深さ(又は凸高さ)が小さくても、内表面側に凹凸が転写され易い。かつ、断熱効果が小さい。逆に、肉厚が厚すぎた場合、断熱効果は大きいものの、材料コストが高く付いてしまう。従って、肉厚は500〜2500μmが好ましかった。   The present invention is a container. Embodiments of the container are described. The container was configured using a foamed resin material. For example, a foamed resin sheet is used. The foamed resin sheet was formed by thermoforming. A foamed resin sheet was formed by vacuum molding. Unevenness is formed on the outer surface of the desired portion of the container. So far, there have been containers with irregularities formed thereon. However, in the present invention, in order to exhibit the above features, the unevenness has an unevenness interval of 1000 to 3000 μm (preferably 1400 μm or more, preferably 2000 μm or less), and a recess depth (or protrusion height) of 150 to. 450 μm (preferably 180 μm or more, preferably 350 μm or less). Of course, even if there are irregularities outside the above range, there is no problem. However, the above-described feature is not achieved only by unevenness outside the range. For example, in the case of large irregularities having an irregularity interval exceeding 5000 μm, the surface of the hand touches the irregular surface over a wide range when the container is held. For this reason, the heat insulation effect based on the fall of the contact area resulting from an unevenness | corrugation becomes small. In addition, it is difficult to expect an anti-slip effect. That is, the container is easily slipped off. For this reason, the unevenness formed on the outer surface of the container is the unevenness of the above characteristics. Furthermore, since the unevenness formed on the outer surface is the unevenness of the above characteristics, the inner surface could not be uneven due to the unevenness. That is, when a two-dimensional sheet is formed into a three-dimensional container by thermoforming (vacuum forming), the irregularities on the outer surface are usually transferred to the inner surface side, and irregularities are formed on the inner surface. The present inventor has noticed that it is not preferable that the above-described unevenness (unevenness) is formed on the inner surface. Therefore, in order to prevent the unevenness as formed on the outer surface (irregularity having an unevenness interval of 1000 to 3000 μm and a concave depth (or convex height) of 150 to 450 μm) from being formed on the inner surface, It was examined how to do it. As a result, it was found that when the irregularities formed on the outer surface were irregularities within the above numerical range, the irregularities caused by the irregularities (the irregularities transferred to the inner surface side) could not be formed. Therefore, from the viewpoint of not only the heat insulation effect and the anti-slip effect, but also the prevention of uneven transfer to the inner surface side, it is important to make the unevenness formed on the outer surface uneven within the above numerical range. In the present invention, unevenness due to the irregularities on the outer surface of the container (irregularities having an irregularity interval of 1000 to 3000 μm and a concave depth (or convex height) of 150 to 450 μm) is formed on the inner surface of the container. It was not done. This is a major feature of the present invention. Preferably, not only the unevenness (unevenness) based on the transfer but also the unevenness (unevenness interval is 1000 to 3000 μm and the recess depth (or protrusion height) is 150 to 450 μm) is not formed in the first place. The thickness of the container at a place where the irregularities are not formed (usually a plane place where the container is supposed to be gripped) is 500 to 2500 μm (preferably 600 μm or more, preferably 1700 μm or less). . When the wall thickness is too thin, irregularities are easily transferred to the inner surface side even if the concave depth (or convex height) formed on the outer surface is small. And the heat insulation effect is small. On the contrary, if the wall thickness is too thick, the heat insulation effect is great, but the material cost is high. Therefore, the wall thickness was preferably 500-2500 μm.

前記凹凸(凹凸間隔が1000〜3000μm、凹深さ(又は凸高さ)が150〜450μm)は、前記容器の容器本体部の底面部における所望個所の外表面に、形成されている。又は、前記容器の容器本体部の側面部における所望個所の外表面に、形成されている。勿論、底面部と側面部との両方に形成されていても良い。   The said unevenness | corrugation (an uneven | corrugated space | interval is 1000-3000 micrometers and a concave depth (or convex height) is 150-450 micrometers) is formed in the outer surface of the desired location in the bottom face part of the container main-body part of the said container. Or it forms in the outer surface of the desired location in the side part of the container main-body part of the said container. Of course, it may be formed on both the bottom and side portions.

前記凹凸(凹凸間隔が1000〜3000μm、凹深さ(又は凸高さ)が150〜450μm)は、前記容器の蓋部の天面部における所望個所の外表面に、形成されている。又は、前記容器の蓋部の側面部における所望個所の外表面に、形成されている。勿論、天面部と側面部との両方に形成されていても良い。   The irregularities (the irregularity interval is 1000 to 3000 μm and the concave depth (or convex height) is 150 to 450 μm) are formed on the outer surface of a desired portion in the top surface portion of the lid portion of the container. Or it forms in the outer surface of the desired location in the side part of the cover part of the said container. Of course, you may form in both a top | upper surface part and a side part.

前記凹凸は、容器本体部にのみ、形成されていても良い。前記凹凸は、蓋部にのみ、形成されていても良い。勿論、両方に形成されていても良い。   The unevenness may be formed only on the container body. The unevenness may be formed only on the lid. Of course, it may be formed in both.

本発明にあっては、基本的に、容器の内表面に、前記特徴の凹凸が、形成されていない。それでは、如何なる凹凸も形成されていないかと問われると、必ずしも、そうではない。例えば、非常にミクロな凹凸は有っても、差し支えない。と言うよりも、如何なる表面にも、微細な凹凸は存在する。凹凸度が0と言うことは、理論的に有り得ても、現実には存在しない。本発明にあっては、前記容器の内表面における凹凸の凹深さ(又は凸高さ)が30μm以下のものならば、本発明の特長の発揮に問題はなかった。従って、斯かる凹凸は存在していても良い。尚、凹深さ(凸高さ)が10μm以下の場合、肉眼では、その凹凸を認識できなかった。逆に、マクロ的な凹凸も、別段、問題なかった。   In the present invention, basically, the irregularities having the above characteristics are not formed on the inner surface of the container. Then, it is not necessarily so when asked whether any irregularities are formed. For example, even if there are very micro irregularities, there is no problem. Rather, fine irregularities exist on any surface. It is theoretically possible that the degree of unevenness is 0, but it does not actually exist. In the present invention, if the concave and convex depth (or convex height) on the inner surface of the container is 30 μm or less, there is no problem in exhibiting the features of the present invention. Therefore, such unevenness may exist. In addition, when the concave depth (convex height) was 10 μm or less, the unevenness could not be recognized with the naked eye. On the contrary, there was no problem with macro unevenness.

前記凹凸は、好ましくは、断面が略円弧形状である。前記凹凸は、好ましくは、線状である。ここで、線状とは、連続した線に限られない。例えば、不連続であっても、多島海状であって、全体を眺めた場合、線の如くになっている場合は、線状であると見做される。   The unevenness preferably has a substantially arc shape in cross section. The irregularities are preferably linear. Here, the line shape is not limited to a continuous line. For example, even if it is discontinuous, it is considered to be linear if it is in the shape of an archipelago and looks like a line when viewed as a whole.

前記発泡樹脂における気泡径は、好ましくは、40〜100μmであった。気泡径が小さ過ぎた場合、断熱効果が乏しかったからである。気泡径が大きくなり過ぎた場合、容器成型性が悪くなってしまう。従って、前記特徴の気泡(独立気泡)の発泡樹脂が好ましかった。前記特徴の気泡(独立気泡)の数は、非発泡性の表面層から、非発泡性の裏面層までの、発泡層の垂直方向に、前記気泡径の範囲(範囲以下も含めて)で、8個(好ましくは10個)以上であった。   The bubble diameter in the foamed resin was preferably 40 to 100 μm. This is because if the bubble diameter is too small, the heat insulation effect was poor. If the bubble diameter becomes too large, the container moldability will deteriorate. Therefore, the foamed resin having the above-mentioned characteristics (closed cell) was preferred. The number of the characteristic bubbles (closed cells) is within the range of the bubble diameter (including the range below) in the vertical direction of the foam layer from the non-foam surface layer to the non-foam back layer. The number was 8 (preferably 10) or more.

前記容器の成形に際しては、非発泡性の表面層と、非発泡性の裏面層と、前記表面層と前記裏面層との間に設けられた発泡層とが積層されたシートが用いられることが好ましかった。すなわち、表面に非発泡層を持つシートの採用が好ましかった。発泡層表面に前記特徴の凹凸の形成は困難であったからによる。   In forming the container, a sheet in which a non-foaming surface layer, a non-foaming back layer, and a foam layer provided between the surface layer and the back layer are used may be used. I liked it. That is, it was preferable to use a sheet having a non-foamed layer on the surface. This is because it was difficult to form the unevenness of the above characteristics on the surface of the foam layer.

以下、より具体的な実施形態が挙げられる。但し、本発明は以下の実施形態のみに限定されない。本発明の特長が大きく損なわれない限り、各種の変形例や応用例も本発明に含まれる。   Hereinafter, more specific embodiments will be mentioned. However, the present invention is not limited only to the following embodiments. Various modifications and application examples are also included in the present invention as long as the features of the present invention are not greatly impaired.

図1〜図4は本発明の一実施形態になる容器の説明図である。図1は開蓋時における容器(容器本体部と蓋部)の斜視図、図2は容器本体部の底面側からの斜視図、図3は図1のX−X線における容器本体部の断面図、図4は図1のY−Y線における蓋部の断面図である。   1-4 is explanatory drawing of the container which becomes one Embodiment of this invention. 1 is a perspective view of a container (a container main body and a lid) when the lid is opened, FIG. 2 is a perspective view from the bottom side of the container main body, and FIG. 3 is a cross-sectional view of the container main body taken along line XX in FIG. 4 and 4 are cross-sectional views of the lid portion taken along line YY in FIG.

図1〜図3から判る通り、容器本体部1の底面部2の外表面(下面)には、適宜な個所(容器を持った際、手が触れる個所)に、凹凸(凹溝)3が、複数、形成されている。凹溝3の溝方向は、容器本体部1の短手方向である。これは、容器本体部1を手にしようとした場合、短手側を手にすることが多いからである。手にした際の滑り止め効果の点から、凹溝3の溝方向は容器本体部1の短手方向であることが好ましい。容器本体部1の側面部4の外表面には、適宜な個所に、凹凸(凹溝)5が、複数、形成されている。凹溝5の方向は略水平方向である。凹溝3,5は、間隔(ピッチ)が1000〜3000μm、深さが150〜450μmであった。   As can be seen from FIG. 1 to FIG. 3, the outer surface (lower surface) of the bottom surface portion 2 of the container main body 1 has irregularities (concave grooves) 3 at appropriate locations (locations where the hand touches when holding the container). A plurality are formed. The groove direction of the concave groove 3 is the short direction of the container body 1. This is because when the container main body 1 is to be obtained, the short side is often obtained. From the viewpoint of the anti-slip effect when it is held in the hand, the groove direction of the groove 3 is preferably the short direction of the container body 1. A plurality of irregularities (concave grooves) 5 are formed at appropriate locations on the outer surface of the side surface portion 4 of the container body 1. The direction of the groove 5 is a substantially horizontal direction. The concave grooves 3 and 5 had an interval (pitch) of 1000 to 3000 μm and a depth of 150 to 450 μm.

図1,3から判る通り、容器本体部1の内面側には、間隔(ピッチ)が1000〜3000μm、深さが150〜450μmの凹凸(凹溝)は、底面部および側面部の何所にも、形成されていない。すなわち、容器本体部を成形した場合、前記凹溝3,5に起因した凹凸(凹溝)は、何所にも、形成されていない。尚、前記特徴外の凹凸が形成されていても良い。例えば、非常にミクロな凹凸(深さ)が30μm以下の凹凸は形成されていても良い。逆に、非常にマクロな凹凸が形成されていても良い。例えば、本実施形態にあっても、幅が1cm程度の凹凸6が形成されている。このような大きな凹凸6は、本発明の特長の発揮には、邪魔にならなかった。   As can be seen from FIGS. 1 and 3, irregularities (concave grooves) having an interval (pitch) of 1000 to 3000 μm and a depth of 150 to 450 μm are provided on the inner surface side of the container main body 1 at various locations on the bottom surface and the side surface. Even not formed. That is, when the container body is molded, the irregularities (concave grooves) due to the concave grooves 3 and 5 are not formed at any place. Note that irregularities outside the above characteristics may be formed. For example, a very fine unevenness (depth) of 30 μm or less may be formed. Conversely, very macro unevenness may be formed. For example, even in the present embodiment, the unevenness 6 having a width of about 1 cm is formed. Such large irregularities 6 did not interfere with the display of the features of the present invention.

図1,4から判る通り、蓋部11の天面部12の外表面(上面)には、適宜な個所(容器を持った際、手が触れる個所)に、凹凸(凹溝)13が、複数、形成されている。凹溝13の溝方向は、蓋部1の短手方向である。これは、蓋部11を手にしようとした場合、短手側を手にすることが多いからである。手にした際の滑り止め効果の点から、凹溝13の溝方向は蓋部11の短手方向であることが好ましい。蓋部11の側面部14の外表面には、凹溝13と同様な特徴の凹凸(凹溝)は形成されていない。凹溝13は、間隔(ピッチ)が1000〜3000μm、深さが150〜450μmであった。   As can be seen from FIGS. 1 and 4, the outer surface (upper surface) of the top surface portion 12 of the lid portion 11 has a plurality of irregularities (concave grooves) 13 at appropriate locations (locations where the hand touches when holding the container). Is formed. The groove direction of the concave groove 13 is the short direction of the lid 1. This is because, when trying to get the lid 11 in hand, the short side is often held. From the viewpoint of the anti-slip effect when it is held in the hand, the groove direction of the concave groove 13 is preferably the short direction of the lid portion 11. Concavities and convexities (concave grooves) having the same characteristics as the concave grooves 13 are not formed on the outer surface of the side surface portion 14 of the lid portion 11. The concave groove 13 had an interval (pitch) of 1000 to 3000 μm and a depth of 150 to 450 μm.

図4から判る通り、蓋部11の内面側には、間隔(ピッチ)が1000〜3000μm、深さが150〜450μmの凹凸(凹溝)は、天面部および側面部の何所にも、形成されていない。すなわち、蓋部11を成形した場合、前記凹溝13に起因した凹凸(凹溝)は、何所にも、形成されていない。尚、前記特徴外の凹凸が形成されていても良い。例えば、非常にミクロな凹凸(深さ)が30μm以下の凹凸は形成されていても良い。逆に、非常にマクロな凹凸は形成されていても良い。例えば、幅が1cm程度の凹凸が形成されていても、このような大きな凹凸は、本発明の特長の発揮に、邪魔にならない。   As can be seen from FIG. 4, irregularities (concave grooves) having an interval (pitch) of 1000 to 3000 μm and a depth of 150 to 450 μm are formed on the inner surface side of the lid portion 11 at various locations on the top surface portion and the side surface portion. It has not been. That is, when the lid portion 11 is formed, the unevenness (concave groove) due to the concave groove 13 is not formed in any place. Note that irregularities outside the above characteristics may be formed. For example, a very fine unevenness (depth) of 30 μm or less may be formed. Conversely, very macro unevenness may be formed. For example, even when unevenness having a width of about 1 cm is formed, such large unevenness does not interfere with the display of the features of the present invention.

前記容器本体部1、及び蓋部11は、発泡樹脂シートの成形(例えば、真空成形)によって、構成された。前記発泡樹脂シートは、非発泡性の表面層と、非発泡性の裏面層と、前記表面層と前記裏面層との間に設けられた発泡層とが積層されたシートである。前記シートは、厚さが500〜2500μmであった。発泡層の気泡径は40〜100μmであった。発泡層の厚さは全体の70〜90%程度である。残りの厚さが、前記表面層と前記裏面層との合計厚である。尚、表面層(裏面層)の発泡層側にはフィラーが含まれていても良い。   The said container main-body part 1 and the cover part 11 were comprised by shaping | molding (for example, vacuum forming) of a foamed resin sheet. The foamed resin sheet is a sheet in which a non-foamable surface layer, a non-foamable back surface layer, and a foam layer provided between the surface layer and the back surface layer are laminated. The sheet had a thickness of 500-2500 μm. The cell diameter of the foam layer was 40-100 μm. The thickness of the foam layer is about 70 to 90% of the whole. The remaining thickness is the total thickness of the front surface layer and the back surface layer. In addition, the filler may be contained in the foaming layer side of the surface layer (back surface layer).

表−1に示される容器(本発明の容器)が作製された。容器本体部1に形成された凹溝3,5の凹凸特徴と、蓋部11に形成された凹溝13の凹凸特徴とは、同じであった。   The container (container of the present invention) shown in Table 1 was produced. The concave and convex features of the concave grooves 3 and 5 formed in the container main body 1 and the concave and convex feature of the concave grooves 13 formed in the lid 11 were the same.

表−1
No. 外表面の凹溝(μm) 内表面の凹溝(μm) 肉厚(μm)
深さ 間隔 深さ 間隔
1 180 1400 − − 600
2 180 2000 − − 600
3 250 1400 − − 600
4 250 2000 − − 600
5 350 1400 − − 1000
6 350 2000 − − 1700
*内表面の凹溝欄の「−」は、凹溝深さが30μm以下であったので、表記は省略。
Table-1
No. Groove on outer surface (μm) Groove on inner surface (μm) Thickness (μm)
Depth interval Depth interval
1 180 1400-600
2 180 2000 − − 600
3 250 1400-600
4 250 2000 − − 600
5 350 1400--1000
6 350 2000--1700
* “-” In the concave groove column on the inner surface is not shown because the concave groove depth is 30 μm or less.

上記構成の容器(容器本体部+蓋部)について、断熱効果、滑止効果、内面側の洗浄容易性が調べられたので、その結果が表−2に示される。   Since the heat insulation effect, the anti-slip effect, and the ease of cleaning on the inner surface side were examined for the container (container body + lid part) having the above configuration, the results are shown in Table-2.

表−2
No. 断熱効果 滑止効果 洗浄容易性 備考
1 ◎ ◎ ◎ 本発明
2 ◎ ◎ ◎ 本発明
3 ◎ ◎ ◎ 本発明
4 ◎ ◎ ◎ 本発明
5 ◎ ◎ ◎ 本発明
6 ◎ ◎ ◎ 本発明
Table-2
No. Heat insulation effect Non-slip effect Ease of cleaning Remarks 1 ◎ ◎ ◎ Present invention 2 ◎ ◎ ◎ Present invention 3 ◎ ◎ ◎ Present invention 4 ◎ ◎ Present invention 5 ◎ ◎ ◎ Present invention 6 ◎ ◎ Present invention

外表面に形成された凹凸の凹深さ(又は凸高さ)が大きな場合、どうしても、内表面側にも、外表面の凹凸が転写形成されてしまう。この為、断熱効果や滑止効果が優秀でも、内面側に出来た凹凸によって、内面側の洗浄が難しく、汚れが残ったままになる。   When the concave depth (or convex height) of the irregularities formed on the outer surface is large, the irregularities on the outer surface are inevitably transferred to the inner surface side. For this reason, even if the heat insulation effect and the non-slip effect are excellent, the unevenness formed on the inner surface side makes it difficult to clean the inner surface, and the dirt remains.

外表面に形成される凹凸の凹深さ(又は凸高さ)が小さな場合、内表面には凹凸が転写されないものの、断熱効果や滑止効果は劣る。   When the concave / convex depth (or convex height) of the irregularities formed on the outer surface is small, although the irregularities are not transferred to the inner surface, the heat insulating effect and the antiskid effect are inferior.

これに対して、本発明の場合には、断熱効果、滑止効果、洗浄容易性、の何れにあっても、優秀であった。更には、肉厚が不必要に厚くないので、コストも低廉であった。   On the other hand, in the case of this invention, it was excellent in any of a heat insulation effect, a non-slip effect, and easy cleaning. Furthermore, since the wall thickness is not unnecessarily thick, the cost is low.

1 容器本体部
2 底面部
3,5 凹溝(凹凸)
4 側面部
11 蓋部
12 天面部
13 凹溝(凹凸)
14 側面部

1 Container body part 2 Bottom part 3, 5 Concave groove (unevenness)
4 Side surface portion 11 Lid portion 12 Top surface portion 13 Groove (unevenness)
14 Side

Claims (11)

発泡樹脂製の容器であって、
凹凸間隔が1000〜3000μm、凹深さ(又は凸高さ)が150〜450μmの凹凸が、前記容器の所望個所の外表面に、形成されており、
凹凸間隔が1000〜3000μm、凹深さ(又は凸高さ)が150〜450μmの前記容器の外表面の前記凹凸に起因した凸凹が、前記容器の内表面に、形成されてなく、
前記凹凸が形成されていない平面個所における前記容器の肉厚は500〜2500μmである
ことを特徴とする容器。
A container made of foamed resin,
Concavities and convexities having a concave-convex interval of 1000 to 3000 μm and a concave depth (or convex height) of 150 to 450 μm are formed on the outer surface of a desired portion of the container,
Unevenness due to the unevenness on the outer surface of the container having an unevenness interval of 1000 to 3000 μm and a concave depth (or convex height) of 150 to 450 μm is not formed on the inner surface of the container,
A container having a thickness of 500 to 2500 μm at a flat surface where the irregularities are not formed.
凹凸間隔が1000〜3000μm、凹深さ(又は凸高さ)が150〜450μmの凹凸が、前記容器の内表面に、形成されていない
ことを特徴とする請求項1の容器。
2. The container according to claim 1, wherein unevenness having an unevenness interval of 1000 to 3000 μm and a concave depth (or convex height) of 150 to 450 μm is not formed on the inner surface of the container.
凹凸間隔が1000〜3000μm、凹深さ(又は凸高さ)が150〜450μmの凹凸が、前記容器の容器本体部の底面部および/または側面部における所望個所の外表面に、形成されている
ことを特徴とする請求項2の容器。
Concavities and convexities having a concave-convex interval of 1000 to 3000 μm and a concave depth (or convex height) of 150 to 450 μm are formed on the outer surface of a desired location in the bottom and / or side of the container body of the container. The container according to claim 2.
凹凸間隔が1000〜3000μm、凹深さ(又は凸高さ)が150〜450μmの凹凸が、前記容器の蓋部の天面部および/または側面部における所望個所の外表面に、形成されている
ことを特徴とする請求項2又は請求項3の容器。
Concavities and convexities having a concave-convex interval of 1000 to 3000 μm and a concave depth (or convex height) of 150 to 450 μm are formed on the outer surface of a desired location in the top and / or side of the lid of the container. The container of Claim 2 or Claim 3 characterized by these.
前記容器の外表面に形成されている凹凸は、凹凸間隔が1400〜2000μm、凹深さ(又は凸高さ)が180〜350μmである
ことを特徴とする請求項1〜請求項4いずれかの容器。
5. The unevenness formed on the outer surface of the container has an unevenness interval of 1400 to 2000 μm and a concave depth (or convex height) of 180 to 350 μm. container.
前記容器の内表面における凹凸の凹深さ(又は凸高さ)は、最大でも、30μmである
ことを特徴とする請求項1〜請求項5いずれかの容器。
The container according to any one of claims 1 to 5, wherein the concave depth (or convex height) of the irregularities on the inner surface of the container is 30 µm at the maximum.
前記容器の内表面における凹凸幅は、最小でも、5000μmである
ことを特徴とする請求項1〜請求項6いずれかの容器。
The container according to any one of claims 1 to 6, wherein the uneven width on the inner surface of the container is at least 5000 µm.
前記凹凸の断面は略円弧形状である
ことを特徴とする請求項1〜請求項7いずれかの容器。
The container according to any one of claims 1 to 7, wherein a cross-section of the unevenness has a substantially arc shape.
前記凹凸は線状である
ことを特徴とする請求項1〜請求項8いずれかの容器。
The container according to claim 1, wherein the irregularities are linear.
前記発泡樹脂は気泡径が40〜100μmである
ことを特徴とする請求項1〜請求項9いずれかの容器。
The container according to any one of claims 1 to 9, wherein the foamed resin has a bubble diameter of 40 to 100 µm.
非発泡性の表面層と、非発泡性の裏面層と、前記表面層と前記裏面層との間に設けられた発泡層とが積層されたシートが成形されてなる
ことを特徴とする請求項1〜請求項10いずれかの容器。

The non-foaming surface layer, the non-foaming back surface layer, and a foamed layer provided between the surface layer and the back surface layer are formed, and a sheet is formed. The container in any one of Claims 1-10.

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Publication number Priority date Publication date Assignee Title
JPS5373270U (en) * 1976-11-22 1978-06-19
JPS5533235U (en) * 1978-08-24 1980-03-04
JPS6135119U (en) * 1984-08-03 1986-03-04 ニチモウ株式会社 box
JPH0630015U (en) * 1992-09-25 1994-04-19 博 内田 Wrap packaging dish
JPH07186292A (en) * 1993-12-27 1995-07-25 Idemitsu Petrochem Co Ltd Production of formed container
JP2001348453A (en) * 2000-04-03 2001-12-18 Sumitomo Chem Co Ltd Thermoplastic resin sheet and container
JP2002019056A (en) * 2000-07-05 2002-01-22 Jsp Corp Polypropylene resin foamed sheet laminate and its manufacturing method as well as container
JP2001146223A (en) * 2000-09-25 2001-05-29 Risu Pack Co Ltd Lunch container formed of foamed sheet
US20030192897A1 (en) * 2002-04-11 2003-10-16 Ivex Packaging Corporation Container for holding food
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JP2007091240A (en) * 2005-09-27 2007-04-12 Cp Kasei Kk Lid of container
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