JP7314600B2

JP7314600B2 - insulated container

Info

Publication number: JP7314600B2
Application number: JP2019082963A
Authority: JP
Inventors: 健太郎市川
Original assignee: Toyo Seikan Group Holdings Ltd
Current assignee: Toyo Seikan Group Holdings Ltd
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2023-07-26
Anticipated expiration: 2039-04-24
Also published as: JP2020179875A

Description

本発明は、飲料などの内容物を収容する断熱容器に関する。 TECHNICAL FIELD The present invention relates to an insulated container for containing contents such as beverages.

飲料などの内容物を収容する容器の保温・保冷性を高めるには、容器本体が外気の影響を受けないように容器本体の外周面と外気の間に空隙を設けることが有効である。 2. Description of the Related Art In order to improve the heat and cold insulation properties of a container containing a content such as a beverage, it is effective to provide a gap between the outer peripheral surface of the container body and the outside air so that the container body is not affected by the outside air.

下記特許文献１には、胴部外周面に複数の凹凸部が形成された容器本体に熱収縮性を有するフィルムを被覆して容器とフィルムの間に空気層を形成して、容器内の内容物が保温可能なペットボトル容器について開示されている。 Patent Document 1 below discloses a PET bottle container in which a container body having a plurality of irregularities formed on the outer peripheral surface of the body is covered with a heat-shrinkable film to form an air layer between the container and the film so that the contents in the container can be kept warm.

特開２００３－４０３５７号公報Japanese Patent Application Laid-Open No. 2003-40357

しかし、特許文献１の容器では、容器本体に被覆されるフィルムが１枚であるため、容器本体とフィルムとの間に１層の空気層しか形成されず、十分な保温・保冷効果が得られない。また、特許文献１の容器において、フィルムが係止される凹凸部の凸部分は、空気層を介さずフィルムと直接接触しているため、外気の影響を受け易い。以上のことから、特許文献１の容器は、十分な断熱効果を実感することができず、改善の余地がある。 However, in the container of Patent Document 1, since only one film is coated on the container body, only one layer of air layer is formed between the container body and the film, and sufficient heat and cold insulation effects cannot be obtained. Further, in the container of Patent Document 1, the convex portion of the concave-convex portion on which the film is locked is in direct contact with the film without an air layer intervening therebetween, and is easily affected by outside air. From the above, the container of Patent Document 1 cannot realize a sufficient heat insulating effect, and there is room for improvement.

内容物を保温・保冷する機能を備えた断熱容器としては、内容器と外容器の間に空隙による空気層を設けた多重構造容器が考えられるが、容器の成形難易度が高い上、製造コストが嵩んでしまうという問題がある。そのため、容易に実現でき、且つ十分な保温・保冷効果が得られる断熱容器のニーズが高まっている。 As an insulated container with the function of keeping the contents warm and cold, a multi-layer structure container with an air layer between the inner container and the outer container is conceivable. Therefore, there is an increasing need for an insulated container that can be easily realized and that can provide sufficient heat and cold insulation effects.

本発明は、上述の事情に鑑みてなされたものであり、上述のような問題点を解決することを課題の一例とする。すなわち、本発明の課題の一例は、容易に実現でき、且つ断熱性能に優れた断熱容器を提供することにある。 The present invention has been made in view of the circumstances described above, and an object thereof is to solve the problems described above. That is, one example of the object of the present invention is to provide an insulated container that can be easily realized and has excellent insulation performance.

本発明に係る断熱容器は、可撓性を有する複数の被覆体が容器本体の外周面に対して層状に被覆され、前記被覆体の少なくとも一部において、最内層の前記被覆体が前記外周面の全周に対して離間することで前記外周面上に全周に亘り形成された第１空隙と、最内層の前記被覆体を含む複数の前記被覆体同士が全周に亘り互いに離間することで前記第１空隙よりも径方向外方において全周に亘り形成された第２空隙とからなる複数の空気層を有する。 In the heat insulating container according to the present invention, the outer peripheral surface of the container body is coated with a plurality of flexible coatings in layers, and in at least a part of the coating, the innermost layer of the coating is separated from the entire circumference of the outer peripheral surface to form a first gap along the entire circumference of the outer peripheral surface. It has a plurality of air layers consisting of two air gaps .

好適には、前記断熱容器において、複数の前記被覆体の端部同士が接触した状態で前記容器本体に装着される。 Preferably, in the heat insulating container, the plurality of covering bodies are attached to the container main body in a state in which the ends thereof are in contact with each other.

好適には、前記断熱容器において、複数の前記被覆体のうち、互いに隣接する前記被覆体の端部同士がずれた状態で前記容器本体に装着される。 Preferably, in the heat-insulating container, of the plurality of coverings, the coverings adjacent to each other are mounted on the container main body in a state in which the ends of the coverings are shifted from each other.

好適には、前記断熱容器において、最外層の前記被覆体以外の前記被覆体は、前記容器本体を構成する樹脂と同一の樹脂で構成され、印刷を施さずに構成される。 Preferably, in the heat-insulated container, the coverings other than the outermost covering are made of the same resin as the container body, and are not printed.

好適には、前記断熱容器において、前記容器本体の前記外周面には、前記被覆体が装着される被覆体装着部が設けられ、前記被覆体装着部は、前記容器本体における前記被覆体装着部が設けられていない前記外周面よりも径方向外方に突出している。 Preferably, in the heat-insulated container, the outer peripheral surface of the container body is provided with a covering mounting portion to which the covering is mounted, and the covering mounting portion protrudes radially outward from the outer peripheral surface of the container body on which the covering mounting portion is not provided.

好適には、前記断熱容器において、前記被覆体装着部は、前記被覆体が装着されたときに形成される空隙と前記空隙の外部とを連通させる通路を備える。 Preferably, in the heat-insulating container, the covering mounting portion includes a passage that communicates between a gap formed when the covering is mounted and the outside of the gap.

本発明によれば、容易に実現でき、且つ断熱性能に優れた断熱容器を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the heat insulation container which can be implement|achieved easily and is excellent in heat insulation performance can be provided.

本実施形態に係る断熱容器の縦断面を模式的に示す図である。It is a figure which shows typically the vertical cross section of the heat insulation container which concerns on this embodiment. （ａ）は第１形態に係る被覆体装着部を備えた断熱容器に被覆体が装着された状態の縦断面を模式的に示す図であり、（ｂ）は第２形態に係る被覆体装着部を備えた断熱容器に被覆体が装着された状態の縦断面を模式的に示す図であり、（ｃ）は第３形態に係る被覆体装着部を備えた断熱容器に被覆体が装着された状態の縦断面を模式的に示す図である。(a) is a diagram schematically showing a vertical cross section of a state in which a cover is attached to an insulated container having a cover attachment part according to a first embodiment, (b) is a view schematically showing a longitudinal cross section of a state in which a cover is attached to an insulated container having a cover attachment part according to a second embodiment, and (c) is a diagram schematically illustrating a longitudinal cross section of a state in which a cover is attached to an insulated container having a cover attachment part according to a third embodiment. （ａ）は第４形態に係る被覆体装着部を備えた断熱容器に被覆体が装着された状態の縦断面を模式的に示す図であり、（ｂ）は第５形態に係る被覆体装着部を備えた断熱容器に被覆体が装着された状態の縦断面を模式的に示す図である。(a) is a diagram schematically showing a vertical cross section of a state in which a cover is attached to an insulated container provided with a cover attachment part according to a fourth embodiment, and (b) is a view schematically showing a longitudinal cross section of a state in which a cover is attached to an insulated container provided with a cover attachment part according to a fifth embodiment. （ａ）は通路が形成される箇所を模式的に示す部分拡大斜視図であり、（ｂ）は通路が形成される箇所を図１に示すＩＶ－ＩＶ線で切断した端面を模式的に示す図である。(a) is a partially enlarged perspective view schematically showing a portion where a passage is formed, and (b) is a diagram schematically showing an end surface of the portion where the passage is formed, cut along line IV-IV shown in FIG.

以下、本発明に係る実施形態について、図面を参照しながら説明する。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments according to the present invention will be described with reference to the drawings.

本実施形態では、ボトル形状を有する断熱容器１の中心軸Ｚに沿った方向を「軸方向」とも称し、断熱容器１の中心軸Ｚを周回する方向を「周方向」とも称し、断熱容器１の中心軸Ｚに直交する方向を「径方向」とも称する。また、本実施形態では、断熱容器１の口部３から底部６へ向かう軸方向を「下方」とも称し、断熱容器１の底部６から口部３へ向かう軸方向を「上方」とも称する。また、本実施形態では、断熱容器１の中心軸Ｚに沿った平面で断熱容器１を切断した断面を「縦断面」とも称し、断熱容器１の中心軸Ｚに直交する平面で断熱容器１を切断した断面を「横断面」とも称する。 In the present embodiment, the direction along the central axis Z of the insulated container 1 having a bottle shape is also referred to as the “axial direction”, the direction around the central axis Z of the insulated container 1 is also referred to as the “circumferential direction”, and the direction perpendicular to the central axis Z of the insulated container 1 is also referred to as the “radial direction”. In the present embodiment, the axial direction from the mouth 3 to the bottom 6 of the heat insulating container 1 is also referred to as "downward", and the axial direction from the bottom 6 to the mouth 3 of the heat insulating container 1 is also referred to as "upward". Further, in the present embodiment, a cross section obtained by cutting the heat insulating container 1 along a plane along the central axis Z of the heat insulating container 1 is also referred to as a "longitudinal section", and a cross section obtained by cutting the heat insulating container 1 along a plane perpendicular to the central axis Z of the heat insulating container 1 is also referred to as a "cross section".

［断熱容器の概要］
図１は、本実施形態に係る断熱容器１の縦断面を模式的に示す図である。断熱容器１は、ボトル形状を成し、内容物となる飲料（ホット飲料、コールド飲料を問わず）、液体調味料、氷菓などを収容する。 [Insulation container outline]
FIG. 1 is a diagram schematically showing a longitudinal section of a heat insulating container 1 according to this embodiment. The heat-insulated container 1 has a bottle shape and accommodates beverages (regardless of whether they are hot beverages or cold beverages), liquid seasonings, frozen desserts, and the like.

断熱容器１は、図１に示されるように、容器本体２の一端部であり内容物の注出口７を有する口部３と、断熱容器１の他端部であり接地面を有する底部６と、口部３から径方向外方に広がりながら下方へ延びる肩部４と、肩部４から下方に延びて底部６に連なる胴部５とを備える。 As shown in FIG. 1, the heat-insulating container 1 includes a mouth portion 3 that is one end of the container body 2 and has a content outlet 7, a bottom portion 6 that is the other end of the heat-insulating container 1 and has a ground surface, a shoulder portion 4 that extends downward while expanding radially outward from the mouth portion 3, and a body portion 5 that extends downward from the shoulder portion 4 and continues to the bottom portion 6.

容器本体２は、熱可塑性樹脂製の容器であり、ブロー成形によって製造される。好適には、容器本体２は、試験管形状のような有底筒状のプリフォームを用いた二軸延伸ブロー成形によって製造される。ブロー成形において、容器本体２における口部３はプリフォームの非延伸部に相当し、肩部４、胴部５及び底部６はプリフォームの延伸部に相当する。 The container body 2 is a container made of thermoplastic resin and manufactured by blow molding. Preferably, the container body 2 is manufactured by biaxial stretch blow molding using a bottomed cylindrical preform such as a test tube. In blow molding, the mouth portion 3 of the container body 2 corresponds to the unstretched portion of the preform, and the shoulder portion 4, body portion 5 and bottom portion 6 correspond to the stretched portions of the preform.

容器本体２は、ポリオレフィン系樹脂、エチレン－ビニル系共重合体、スチレン系樹脂、ビニル系樹脂、ポリアミド系樹脂、ポリエステル系樹脂、ポリカーボネート系樹脂、ポリフエニレンオキサイド樹脂、又は、生分解性樹脂を用いて成形される。好適には、容器本体２は、ポリオレフィン系樹脂、又は、ポリエステル系樹脂を用いて成形される。より好適には、容器本体２は、ポリエステル系樹脂を用いて成形される。このポリエステル系樹脂としては、例えば、ポリエチレンテレフタレート、ポリブチレンテレフタレート、ポリエチレンナフタレート、ポリエチレンフラノエート、及び、これらの共重合ポリエステルなどの樹脂が挙げられる。特に好適には、容器本体２は、ポリエチレンテレフタレート樹脂を用いて成形される。 The container body 2 is molded using polyolefin resin, ethylene-vinyl copolymer, styrene resin, vinyl resin, polyamide resin, polyester resin, polycarbonate resin, polyphenylene oxide resin, or biodegradable resin. Preferably, the container body 2 is molded using polyolefin resin or polyester resin. More preferably, the container body 2 is molded using a polyester-based resin. Examples of the polyester-based resin include resins such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyethylene furanoate, and copolymer polyesters thereof. Particularly preferably, the container body 2 is molded using polyethylene terephthalate resin.

［被覆体装着部］
図１に示されるように、容器本体２における胴部５及び底部６には、被覆体１０が装着される装着部位として機能する被覆体装着部８が設けられる。被覆体装着部８は、容器本体２の外周面に設けられ、例えば胴部５の中央部のような、容器本体２における被覆体装着部８が設けられていない外周面よりも径方向の外方に突出して設けられる。図１に示される断熱容器１において、被覆体装着部８は、外層となる第１被覆体１０ａが装着される第１被覆体装着部８ａと、内層となる第２被覆体１０ｂが装着される第２被覆体装着部８ｂとを含む。第１被覆体装着部８ａは、肩部４から連なる胴部５の上端部及び胴部５と連なる底部６の側壁部に設けられる。第１被覆体装着部８ａは、被覆体装着部８が設けられていない胴部５の外周面よりも径方向に突出するように設けられる。第２被覆体装着部８ｂは、第１被覆体装着部８ａよりも胴部５の中央部側に設けられる。第２被覆体装着部８ｂは、第１被覆体装着部８ａよりも径方向の幅寸法が小さく、且つ被覆体装着部８が設けられていない胴部５の外周面よりも径方向に突出するように設けられる。 [Covering part]
As shown in FIG. 1, the body portion 5 and the bottom portion 6 of the container body 2 are provided with a cover mounting portion 8 functioning as a mounting portion to which the cover 10 is mounted. The cover mounting portion 8 is provided on the outer peripheral surface of the container body 2, and projects radially outward from the outer peripheral surface of the container body 2 where the cover mounting portion 8 is not provided, such as the central portion of the body portion 5. In the heat-insulating container 1 shown in FIG. 1, the covering mounting portion 8 includes a first covering mounting portion 8a to which the first covering 10a as the outer layer is mounted, and a second covering 10b to which the second covering 10b as the inner layer is mounted. The first cover mounting portion 8 a is provided on the side wall portion of the upper end portion of the trunk portion 5 continuing from the shoulder portion 4 and the bottom portion 6 continuing from the trunk portion 5 . The first cover mounting portion 8a is provided so as to protrude in the radial direction from the outer peripheral surface of the trunk portion 5 where the cover mounting portion 8 is not provided. The second cover mounting portion 8b is provided closer to the central portion of the trunk portion 5 than the first cover mounting portion 8a. The second cover mounting portion 8b has a radial width smaller than that of the first cover mounting portion 8a, and is provided so as to protrude radially beyond the outer peripheral surface of the trunk portion 5 where the cover mounting portion 8 is not provided.

図１に示される断熱容器１において、外層となる第１被覆体１０ａと、内層となる第２被覆体１０ｂの間には、空隙Ａ１が形成され、内層となる第２被覆体１０ｂと容器本体２の外周面の間には、空隙Ａ２が形成される。空隙Ａ１と空隙Ａ２は、それぞれ断熱性を有する空気層として機能する。よって、本実施形態に係る断熱容器１は、容器本体２の外周面が、径方向に層状に形成された複数の空気層で覆われることとなる。断熱容器１は、第１被覆体１０ａのみによる１層の空気層に比べ、複数の空気層の方が空気の対流による熱移動が低減されるので、より優れた断熱性が付与される。また、被覆体１０に遮光性がある場合には、輻射による熱移動を複数層で低減できる。また、被覆体１０が熱伝導率の低い断熱体である場合には、熱電導による熱移動を複数層で低減できる。 In the heat insulating container 1 shown in FIG. 1, a gap A1 is formed between the first covering 10a as the outer layer and the second covering 10b as the inner layer, and a gap A2 is formed between the second covering 10b as the inner layer and the outer peripheral surface of the container body 2. The gap A1 and the gap A2 each function as an air layer having heat insulation. Therefore, in the heat insulating container 1 according to this embodiment, the outer peripheral surface of the container body 2 is covered with a plurality of air layers formed in layers in the radial direction. The heat-insulating container 1 has a plurality of air layers, in which heat transfer due to air convection is reduced compared to a single air layer formed only by the first covering 10a, so that the heat-insulating property is imparted to the heat-insulating container 1 more excellently. In addition, when the cover 10 has a light-shielding property, heat transfer due to radiation can be reduced by a plurality of layers. Moreover, when the covering 10 is a heat insulating material with low thermal conductivity, heat transfer due to thermal conduction can be reduced by a plurality of layers.

ここで、被覆体装着部８の形態例について説明する。図２（ａ）～（ｃ）には、被覆体装着部８の形態例として、第１被覆体１０ａと第２被覆体１０ｂが別体に装着される第１形態の被覆体装着部８１～第３形態の被覆体装着部８３と、各形態における被覆体１０の装着例について示されている。また、図３（ａ）、（ｂ）には、被覆体装着部８の形態例として、第１被覆体１０ａと第２被覆体１０ｂの一部が接触した状態で装着される第４形態の被覆体装着部８４及び第５形態の被覆体装着部８５と、各形態における被覆体１０の装着例について示されている。 Here, an example of the form of the cover mounting portion 8 will be described. FIGS. 2A to 2C show, as examples of the form of the cover mounting part 8, a cover mounting part 81 of a first form in which a first cover 10a and a second cover 10b are separately mounted to a cover mounting part 83 of a third form, and an example of mounting the cover 10 in each form. In addition, FIGS. 3A and 3B show, as example forms of the covering mounting portion 8, a covering mounting portion 84 of a fourth type and a covering mounting portion 85 of a fifth type mounted in a state where the first covering 10a and a part of the second covering 10b are in contact with each other, and mounting examples of the covering 10 in each form.

―第１形態に係る被覆体装着部―
図２（ａ）に示されるように、第１形態の被覆体装着部８１は、肩部４から連なる胴部５の上端部及び胴部５から連なる底部６の側壁部のそれぞれに設けられる上下一対の第１被覆体装着部８１ａと、上下一対の第１被覆体装着部８１ａの間であって軸方向に沿って間隔を空けて設けられる上下一対の第２被覆体装着部８１ｂを含む。第１被覆体装着部８１ａは、径方向の幅寸法が最大となるように径方向の外方に突出して設けられる。第２被覆体装着部８１ｂは、第１被覆体装着部８１ａよりも径方向の幅寸法が小さくなるように、上下一対の第１被覆体装着部８１ａの間における胴部５の所定箇所が他の胴部５の外周面よりも径方向の外方に突出して設けられる。 - Covering body mounting part according to the first form -
As shown in FIG. 2( a ), the covering mounting portion 81 of the first form includes a pair of upper and lower first covering mounting portions 81 a provided on the upper end portion of the trunk portion 5 extending from the shoulder portion 4 and the side wall portion of the bottom portion 6 connecting from the trunk portion 5 , and a pair of upper and lower second covering mounting portions 81 b provided between the pair of upper and lower first covering mounting portions 81 a and spaced along the axial direction. The first cover mounting portion 81a is provided so as to protrude radially outward so as to maximize the width dimension in the radial direction. The second cover mounting portion 81b is provided so that a predetermined portion of the body portion 5 between the pair of upper and lower first cover mounting portions 81a protrudes radially outward from the outer peripheral surface of the other body portion 5 so that the width dimension in the radial direction is smaller than that of the first cover mounting portion 81a.

第１形態の被覆体装着部８１には、２枚の被覆体１０（第１被覆体１０ａ、第２被覆体１０ｂ）が装着される。図２（ａ）において、外層となる第１被覆体１０ａは、第１被覆体装着部８１ａに装着され、内層となる第２被覆体１０ｂは、第２被覆体装着部８１ｂに装着される。 Two covers 10 (a first cover 10a and a second cover 10b) are attached to the cover attachment portion 81 of the first configuration. In FIG. 2A, the first cover 10a, which is the outer layer, is attached to the first cover attachment portion 81a, and the second cover 10b, which is the inner layer, is attached to the second cover attachment portion 81b.

第１形態の被覆体装着部８１では、第１被覆体装着部８１ａと第２被覆体装着部８１ｂの径方向の幅寸法が異なるため、第１被覆体１０ａと第２被覆体１０ｂの装着状態において各被覆体が互いに離間する。そのため、第１形態の被覆体装着部８１を備えた断熱容器１では、第１被覆体１０ａと第２被覆体１０ｂの間に空隙Ａ１が形成され、第２被覆体１０ｂと胴部５の間に空隙Ａ２が形成され、空隙Ａ１と空隙Ａ２で構成される２層の空気層により胴部５が覆われることとなる。よって、第１形態の被覆体装着部８１を備えた断熱容器１は、十分な断熱効果を備える容器となり得る。 In the covering mounting portion 81 of the first embodiment, the first covering mounting portion 81a and the second covering mounting portion 81b have different radial width dimensions, so that the coverings are separated from each other when the first covering 10a and the second covering 10b are mounted. Therefore, in the heat-insulating container 1 having the cover mounting portion 81 of the first embodiment, a gap A1 is formed between the first cover 10a and the second cover 10b, and a gap A2 is formed between the second cover 10b and the body 5, and the body 5 is covered with two air layers composed of the gap A1 and the gap A2. Therefore, the heat-insulating container 1 provided with the cover mounting portion 81 of the first form can be a container with a sufficient heat-insulating effect.

―第２形態に係る被覆体装着部―
図２（ｂ）に示されるように、第２形態の被覆体装着部８２は、肩部４から連なる胴部５の上端部及び胴部５から連なる底部６の側壁部のそれぞれに設けられる上下一対の第１被覆体装着部８２ａと、上下一対の第１被覆体装着部８２ａの間であって軸方向に沿って間隔を空けて設けられる複数の第２被覆体装着部８２ｂを含む。図２（ｂ）において、第２被覆体装着部８２ｂは、軸方向に間隔を空けて４つ設けられる。第１被覆体装着部８２ａは、径方向の幅寸法が最大となるように径方向の外方に突出して設けられる。第２被覆体装着部８２ｂは、第１被覆体装着部８２ａよりも径方向の幅寸法が小さくなるように、上下一対の第１被覆体装着部８２ａの間における胴部５の複数箇所が他の胴部５の外周面よりも径方向の外方に突出して設けられる。 - Covering body mounting part according to the second form -
As shown in FIG. 2(b), the cover mounting portion 82 of the second form includes a pair of upper and lower first cover mounting portions 82a provided respectively on the upper end portion of the body portion 5 extending from the shoulder portion 4 and the side wall portion of the bottom portion 6 connecting from the body portion 5, and a plurality of second covering body mounting portions 82b provided between the pair of upper and lower first covering body mounting portions 82a and spaced apart along the axial direction. In FIG. 2(b), four second cover mounting portions 82b are provided at intervals in the axial direction. The first cover mounting portion 82a is provided so as to protrude radially outward so as to maximize the width dimension in the radial direction. The second covering mounting portion 82b is provided so that a plurality of portions of the body portion 5 between the pair of upper and lower first covering mounting portions 82a protrude radially outward from the outer peripheral surface of the other body portion 5 so that the width dimension in the radial direction is smaller than that of the first covering body mounting portion 82a.

第２形態の被覆体装着部８２には、２枚の被覆体１０（第１被覆体１０ａ、第２被覆体１０ｂ）が装着される。図２（ｂ）において、外層となる第１被覆体１０ａは、第１被覆体装着部８２ａに装着され、内層となる第２被覆体１０ｂは、第２被覆体装着部８２ｂに装着される。 Two covers 10 (a first cover 10a and a second cover 10b) are attached to the cover attachment portion 82 of the second form. In FIG. 2B, the first cover 10a, which is the outer layer, is attached to the first cover attachment portion 82a, and the second cover 10b, which is the inner layer, is attached to the second cover attachment portion 82b.

第２形態の被覆体装着部８２では、第１被覆体装着部８２ａと第２被覆体装着部８２ｂの径方向の幅寸法が異なるため、第１被覆体１０ａと第２被覆体１０ｂの装着状態において各被覆体が互いに離間する。そのため、第２形態の被覆体装着部８２を備えた断熱容器１は、第１被覆体１０ａと第２被覆体１０ｂの間に空隙Ａ１が形成され、第２被覆体１０ｂと胴部５の間に空隙Ａ２が形成され、空隙Ａ１と空隙Ａ２で構成される２層の空気層により胴部５が覆われることとなる。よって、第２形態の被覆体装着部８２を備えた断熱容器１は、十分な断熱効果を備える容器となり得る。 In the covering mounting portion 82 of the second embodiment, the first covering mounting portion 82a and the second covering mounting portion 82b have different radial width dimensions, so that the coverings are separated from each other when the first covering 10a and the second covering 10b are mounted. Therefore, in the heat-insulating container 1 having the cover mounting portion 82 of the second form, the gap A1 is formed between the first cover 10a and the second cover 10b, the gap A2 is formed between the second cover 10b and the body 5, and the body 5 is covered with two air layers composed of the gap A1 and the gap A2. Therefore, the heat insulating container 1 provided with the second form of the cover mounting portion 82 can be a container with a sufficient heat insulating effect.

また、第２被覆体装着部８２ｂは、軸方向に沿って胴部５の上下方向に複数設けられているため、第２被覆体１０ｂが装着されると、上下方向に複数区画された空隙Ａ２が形成される。そのため、第２形態の被覆体装着部８２を備えた断熱容器１では、第１形態の被覆体装着部８１を備えた断熱容器１と比べて、空隙Ａ２内における空気の対流が抑制され、保温・保冷性を更に高めることができる。 In addition, since a plurality of the second cover mounting portions 82b are provided in the vertical direction of the trunk portion 5 along the axial direction, when the second cover 10b is mounted, a plurality of vertically partitioned gaps A2 are formed. Therefore, in the heat-insulating container 1 provided with the cover mounting portion 82 of the second form, air convection in the gap A2 is suppressed compared to the heat-insulating container 1 provided with the cover mounting portion 81 of the first form, and the heat and cold insulation properties can be further enhanced.

なお、第２形態の被覆体装着部８２において、第２被覆体装着部８２ｂの形成数は、図２（ｂ）に示される数（４つ）に限定されず、例えば容器本体２の大きさ、収容される内容物の種類に応じて適宜設定されてよい。 In addition, in the cover mounting part 82 of the second embodiment, the number of the second cover mounting parts 82b formed is not limited to the number (four) shown in FIG.

―第３形態に係る被覆体装着部―
図２（ｃ）に示されるように、第３形態の被覆体装着部８３は、肩部４から連なる胴部５の上端部及び胴部５から連なる底部６の側壁部のそれぞれに設けられる上下一対の第１被覆体装着部８３ａと、上下一対の第１被覆体装着部８３ａの間であって軸方向に沿って間隔を空けて設けられる上下一対の第２被覆体装着部８３ｂに加え、上下一対の第１被覆体装着部８３ａと上下一対の第２被覆体装着部８２ｂとの間であって、軸方向に沿って間隔を空けて設けられる上下一対の第３被覆体装着部８３ｃを含む。第１被覆体装着部８３ａは、径方向の幅寸法が最大となるように径方向の外方に突出して設けられる。第２被覆体装着部８３ｂは、第１被覆体装着部８３ａよりも径方向の幅寸法が小さくなるように、上下一対の第１被覆体装着部８３ａの間における胴部５の所定箇所が他の胴部５の外周面よりも径方向の外方に突出して設けられる。第３被覆体装着部８３ｃ（８ｃ）は、第１被覆体装着部８３ａよりも径方向の幅寸法が小さく、且つ第２被覆体装着部８３ｂよりも径方向の幅寸法が大きくなるように、上下一対の第１被覆体装着部８３ａと上下一対の第２被覆体装着部８３ｂとの間における胴部５の所定箇所が他の胴部５の外周面よりも径方向の外方に突出して設けられる。 -Covering body mounting part according to the third form-
As shown in FIG. 2(c), the covering body mounting portion 83 of the third embodiment includes a pair of upper and lower first covering body mounting portions 83a provided on the upper end portion of the body portion 5 extending from the shoulder portion 4 and the side wall portion of the bottom portion 6 extending from the body portion 5, and a pair of upper and lower covering body mounting portions 83b provided at intervals along the axial direction between the pair of upper and lower first covering body mounting portions 83a. It includes a pair of upper and lower third covering member mounting portions 83c that are spaced apart in the axial direction between the pair of second covering member mounting portions 82b. The first cover mounting portion 83a is provided so as to protrude radially outward so as to maximize the width dimension in the radial direction. The second cover mounting portion 83b is provided so that a predetermined portion of the body portion 5 between the pair of upper and lower first cover mounting portions 83a protrudes radially outward from the outer peripheral surface of the other body portion 5 so that the width dimension in the radial direction is smaller than that of the first cover mounting portion 83a. The third covering mounting portion 83c (8c) has a radial width smaller than that of the first covering mounting portion 83a and a radial width larger than that of the second covering mounting portion 83b.

第３形態の被覆体装着部８３には、３枚の被覆体１０（第１被覆体１０ａ、第２被覆体１０ｂ、第３被覆体１０ｃ）が装着される。図２（ｃ）において、最外層となる第１被覆体１０ａは、第１被覆体装着部８３ａに装着され、最内層となる第２被覆体１０ｂは、第２被覆体装着部８３ｂに装着され、中間層となる第３被覆体１０ｃは、第３被覆体装着部８３ｃに装着される。 Three covers 10 (a first cover 10a, a second cover 10b, and a third cover 10c) are attached to the cover attachment portion 83 of the third form. In FIG. 2C, the first covering 10a, which is the outermost layer, is attached to the first covering mounting portion 83a, the second covering 10b, which is the innermost layer, is attached to the second covering mounting portion 83b, and the third covering 10c, which is the intermediate layer, is attached to the third covering mounting portion 83c.

第３形態の被覆体装着部８３では、第１被覆体装着部８３ａ、第２被覆体装着部８３ｂ及び第３被覆体装着部８３ｃの径方向の幅寸法が互いに異なるため、第１被覆体１０ａ、第２被覆体１０ｂ及び第３被覆体１０ｃの装着状態において対向する被覆体同士が互いに離間する。そのため、第３形態の被覆体装着部８３を備えた断熱容器１は、第１被覆体１０ａと第３被覆体１０ｃの間に空隙Ａ１が形成され、第２被覆体１０ｂと胴部５の間に空隙Ａ２が形成され、第２被覆体１０ｂと第３被覆体１０ｃの間に空隙Ａ３が形成され、空隙Ａ１、空隙Ａ２及び空隙Ａ３で構成される３層の空気層により胴部５が覆われることとなる。よって、第３形態の被覆体装着部８３を備えた断熱容器１は、第１形態の被覆体装着部８１又は第２形態の被覆体装着部８２を備えた断熱容器１と比べて、より断熱効果の高い容器となり得る。 In the covering member mounting portion 83 of the third embodiment, the first covering member mounting portion 83a, the second covering member mounting portion 83b, and the third covering member mounting portion 83c have different widths in the radial direction. Therefore, in the heat-insulating container 1 having the cover mounting portion 83 of the third form, the gap A1 is formed between the first cover 10a and the third cover 10c, the gap A2 is formed between the second cover 10b and the body 5, the gap A3 is formed between the second cover 10b and the third cover 10c, and the body 5 is covered with three air layers composed of the gaps A1, A2, and A3. Therefore, the heat-insulating container 1 having the cover mounting portion 83 of the third type has a higher heat insulating effect than the heat-insulating container 1 having the cover mounting portion 81 of the first type or the cover mounting portion 82 of the second type.

―第４形態に係る被覆体装着部―
図３（ａ）に示されるように、第４形態の被覆体装着部８４は、肩部４から連なる胴部５の上端部及び胴部５から連なる底部６の側壁部のそれぞれに設けられる上下一対の第１被覆体装着部８４ａと、上下一対の第１被覆体装着部８４ａの間であって胴部５の中央部よりも下方に設けられる第２被覆体装着部８４ｂを含む。第１被覆体装着部８４ａは、径方向の幅寸法が最大となるように径方向の外方に突出して設けられる。第２被覆体装着部８４ｂは、第１被覆体装着部８４ａよりも径方向の幅寸法が小さくなるように、上下一対の第１被覆体装着部８４ａの間における胴部５の中央部よりも下方側の一部が他の胴部５の外周面よりも径方向の外方に突出して設けられる。 -Covering body mounting part according to the fourth form-
As shown in FIG. 3A , the cover mounting portion 84 of the fourth form includes a pair of upper and lower first cover mounting portions 84 a provided on the upper end portion of the body portion 5 continuing from the shoulder portion 4 and the side wall portion of the bottom portion 6 connecting from the body portion 5 , and a second covering body mounting portion 84 b provided between the pair of upper and lower first cover mounting portions 84 a and below the central portion of the body portion 5 . The first cover mounting portion 84a is provided so as to protrude radially outward so as to maximize the width dimension in the radial direction. The second covering mounting portion 84b is provided such that a portion of the second covering mounting portion 84b on the lower side than the central portion of the trunk portion 5 between the pair of upper and lower first covering mounting portions 84a protrudes radially outward from the outer peripheral surface of the other trunk portion 5 so that the width dimension in the radial direction is smaller than that of the first covering mounting portion 84a.

第４形態の被覆体装着部８４には、２枚の被覆体１０（第１被覆体１０ａ、第２被覆体１０ｂ）が装着される。図３（ａ）において、外層となる第１被覆体１０ａは、その上端部が第２被覆体１０ｂの上端部を覆いつつ第２被覆体１０ｂの上端部を越えて上方の第１被覆体装着部８４ａに装着され、その下端部が下方の第１被覆体装着部８４ａに装着される。また、内層となる第２被覆体１０ｂは、その上端部が第１被覆体１０ａの上端部で覆われた状態で第１被覆体１０ａの上端部の装着位置よりも下方にずれた位置で上方の第１被覆体装着部８４ａに装着され、その下端部が第２被覆体装着部８４ｂに装着される。 Two covers 10 (a first cover 10a and a second cover 10b) are attached to the cover attachment portion 84 of the fourth form. In FIG. 3A, the first cover 10a, which is the outer layer, has its upper end covering the upper end of the second cover 10b and is attached to the upper first cover mounting portion 84a beyond the upper end of the second cover 10b, and its lower end is attached to the lower first cover mounting portion 84a. In addition, the second cover 10b, which is the inner layer, is mounted on the upper first cover mounting part 84a at a position shifted downward from the mounting position of the upper end of the first cover 10a with its upper end covered by the upper end of the first cover 10a, and its lower end is mounted on the second cover mounting part 84b.

第４形態の被覆体装着部８４では、第１被覆体装着部８４ａと第２被覆体装着部８４ｂの径方向の幅寸法が異なるため、第１被覆体１０ａと第２被覆体１０ｂの装着状態において各被覆体の一部が互いに離間する。そのため、第４形態の被覆体装着部８４を備えた断熱容器１では、第１被覆体１０ａと第２被覆体１０ｂの間に空隙Ａ１が形成され、第２被覆体１０ｂと胴部５の間に空隙Ａ２が形成され、空隙Ａ１と空隙Ａ２で構成される２層の空気層により胴部５が覆われることとなる。よって、第４形態の被覆体装着部８４を備えた断熱容器１は、十分な断熱効果を備える容器となり得る。また、第４形態の被覆体装着部８４を備えた断熱容器１は、被覆体装着部８４の形成数が少なくて済むため、容器の成形難易度が低くなり、容易に実施することができる。 In the covering mounting portion 84 of the fourth embodiment, the first covering mounting portion 84a and the second covering mounting portion 84b have different radial width dimensions, so that when the first covering 10a and the second covering 10b are mounted, the coverings are partially separated from each other. Therefore, in the heat-insulating container 1 having the cover mounting portion 84 of the fourth embodiment, a gap A1 is formed between the first cover 10a and the second cover 10b, a gap A2 is formed between the second cover 10b and the body 5, and the body 5 is covered with two layers of air composed of the gap A1 and the gap A2. Therefore, the heat-insulating container 1 provided with the cover mounting portion 84 of the fourth form can be a container with a sufficient heat-insulating effect. In addition, since the heat-insulated container 1 having the cover mounting portion 84 of the fourth embodiment requires only a small number of cover mounting portions 84 to be formed, the degree of difficulty in forming the container is reduced, and the container can be easily formed.

例えば、上述した第１形態の被覆体装着部８１を備えた断熱容器１において、第２被覆体１０ｂを容器本体２から剥離して分別する際に、第１被覆体装着部８１ａと第２被覆体装着部８１ｂの間に指がうまく入らず、第２被覆体１０ｂが剥がしづらいことがある。これに対し、第４形態の被覆体装着部８４を備えた断熱容器１では、上方の第１被覆体装着部８４ａに第２被覆体１０ｂの上端部が装着されるため、第２被覆体１０ｂの上端部の周辺に十分な空間があって爪を引っ掛け易い。よって、第４形態の被覆体装着部８４を備えた断熱容器１は、第２被覆体１０ｂと容器本体２の分別を容易に行うことができる。 For example, in the heat-insulating container 1 having the cover mounting portion 81 of the first embodiment described above, when separating the second cover 10b from the container body 2 by peeling it off, the first cover mounting portion 81a and the second cover mounting portion 81b may not allow fingers to be properly inserted, and the second cover 10b may be difficult to peel off. On the other hand, in the heat-insulating container 1 having the cover mounting portion 84 of the fourth form, the upper end of the second cover 10b is mounted on the upper first cover mounting portion 84a. Therefore, the heat-insulated container 1 having the cover mounting portion 84 of the fourth form can easily separate the second cover 10b and the container body 2 .

また、第４形態の被覆体装着部８４では、第１被覆体１０ａの上端部で第２被覆体１０ｂの上端部を覆いつつ、第１被覆体１０ａの上端部の装着位置を、第２被覆体１０ｂの上端部の装着位置よりも上方にずれた位置としている。つまり、外層となる第１被覆体１０ａの上端部が、内層となる第２被覆体１０ｂを越えて第１被覆体装着部８４ａに装着された状態となる。これにより、第４形態の被覆体装着部８４を備えた断熱容器１は、第１被覆体１０ａを剥がした際に、第２被覆体１０ｂに対する第１被覆体１０ａと被覆体装着部８との挟持状態が解除されるため、容器本体２と被覆体１０の分別がし易くなるという効果を奏する。 In addition, in the covering member mounting portion 84 of the fourth embodiment, the upper end portion of the first covering member 10a covers the upper end portion of the second covering member 10b, and the mounting position of the upper end portion of the first covering member 10a is shifted upward from the mounting position of the upper end portion of the second covering member 10b. That is, the upper end portion of the first cover 10a, which is the outer layer, is mounted on the first cover mounting portion 84a beyond the second cover 10b, which is the inner layer. As a result, when the first cover 10a is removed from the heat-insulated container 1 having the cover mounting portion 84 of the fourth embodiment, the first cover 10a and the cover mounting portion 8 are released from the sandwiched state with respect to the second cover 10b.

更に、第４形態の被覆体装着部８４では、上方の第１被覆体装着部８４ａに対し、第１被覆体１０ａの上端部と第２被覆体１０ｂの上端部を一部接触させた状態で係止させることができるため、被覆体１０の装着工程を容易に行うことができる。特に被覆体１０をシュリンクラベルとした場合、シュリンク加工前のラベルの装着位置決めが一度で行えるため、有効である。 Furthermore, in the cover mounting portion 84 of the fourth embodiment, the upper end portion of the first cover 10a and the upper end portion of the second cover 10b can be engaged with the upper first cover mounting portion 84a in a state in which they are partially in contact with each other. Therefore, the mounting process of the cover 10 can be easily performed. In particular, when the cover 10 is a shrink label, it is effective because the mounting and positioning of the label before shrink processing can be performed at once.

―第５形態に係る被覆体装着部―
図３（ｂ）に示されるように、第５形態の被覆体装着部８５は、肩部４から連なる胴部５の上端部及び胴部５から連なる底部６の側壁部のそれぞれに設けられる上下一対の第１被覆体装着部８５ａを含む。第１被覆体装着部８５ａは、径方向の幅寸法が最大となるように径方向の外方に突出して設けられる。 -Covering body mounting part according to the fifth form-
As shown in FIG. 3B, the cover mounting portion 85 of the fifth form includes a pair of upper and lower first cover mounting portions 85a provided on each of the upper end portion of the body portion 5 extending from the shoulder portion 4 and the side wall portion of the bottom portion 6 extending from the body portion 5. The first cover mounting portion 85a is provided so as to protrude radially outward so as to maximize the width dimension in the radial direction.

第５形態の被覆体装着部８５において、被覆体１０として、例えば２枚のシュリンクラベル（第１被覆体１０ａ、第２被覆体１０ｂ）が装着され、外層となる第１被覆体１０ａの熱収縮量よりも、内層となる第２被覆体１０ｂの熱収縮量の方が大きくなるように設定される。第１被覆体１０ａと第２被覆体１０ｂの熱収縮量に差を持たせる方法としては、例えば第１被覆体１０ａと第２被覆体１０ｂで熱膨張係数の異なる樹脂を使用する方法、内層となる第２被覆体１０ｂの厚さを第１被覆体１０ａの厚さよりも薄くする方法、内層となる第２被覆体１０ｂのシュリンク加工時間を第１被覆体１０ａよりも長くする方法などが挙げられる。 In the cover mounting portion 85 of the fifth embodiment, for example, two shrink labels (a first cover 10a and a second cover 10b) are attached as the cover 10, and the amount of heat shrinkage of the second cover 10b, which is an inner layer, is set to be larger than that of the first cover 10a, which is an outer layer. Examples of a method for providing a difference in the amount of thermal contraction between the first covering 10a and the second covering 10b include a method of using resins having different thermal expansion coefficients for the first covering 10a and the second covering 10b, a method of making the thickness of the second covering 10b, which is the inner layer, thinner than the thickness of the first covering 10a, and a method of making the second covering 10b, which is the inner layer, longer than the first covering 10a.

図３（ｂ）において、外層となる第１被覆体１０ａは、その上端部が第２被覆体１０ｂの上端部と接触した状態で上方の第１被覆体装着部８５ａに装着され、その下端部が第２被覆体１０ｂの下端部と接触した状態で下方の第１被覆体装着部８５ａに装着される。また、内層となる第２被覆体１０ｂは、その上端部が第１被覆体１０ａの上端部により一部が覆われた状態で上方の第１被覆体装着部８５ａに装着され、その下端部が第１被覆体１０ａの上端部に覆われた状態で下方の第１被覆体装着部８５ａに装着される。 In FIG. 3B, the first covering 10a, which is the outer layer, is attached to the upper first covering mounting portion 85a with its upper end in contact with the upper end of the second covering 10b, and is attached to the lower first covering mounting portion 85a with its lower end in contact with the lower end of the second covering 10b. In addition, the second cover 10b, which is the inner layer, is mounted on the upper first cover mounting part 85a with its upper end partially covered by the upper end of the first cover 10a, and its lower end is mounted on the lower first cover mounting part 85a with its lower end covered by the upper end of the first cover 10a.

第５形態の被覆体装着部８５では、第１被覆体１０ａの熱収縮量よりも第２被覆体１０ｂの熱収縮量の方が大きいため、シュリンク加工の際は、第１被覆体１０ａよりも第２被覆体１０ｂの方が径方向の内方に向かって大きく熱収縮する。これにより、第５形態の被覆体装着部８５では、第１被覆体１０ａと第２被覆体１０ｂの装着状態において各被覆体の一部が互いに離間する。そのため、第５形態の被覆体装着部８５を備えた断熱容器１は、第１被覆体１０ａと第２被覆体１０ｂの間に空隙Ａ１が形成され、第２被覆体１０ｂと胴部５の間に空隙Ａ２が形成され、空隙Ａ１と空隙Ａ２で構成される２層の空気層により胴部５が覆われることとなる。よって、第５形態の被覆体装着部８５を備えた断熱容器１は、十分な断熱効果を備える容器となり得る。また、第５形態の被覆体装着部８５を備えた断熱容器１は、被覆体装着部８５の形成数が少なくて済むため、容器の成形難易度が低くなり、容易に実施することができる。 In the covering body mounting portion 85 of the fifth embodiment, the amount of heat shrinkage of the second covering body 10b is greater than that of the first covering body 10a. Therefore, during the shrinking process, the second covering body 10b undergoes greater heat shrinkage radially inward than the first covering body 10a. As a result, in the cover mounting portion 85 of the fifth embodiment, portions of the covers are separated from each other in the mounted state of the first cover 10a and the second cover 10b. Therefore, in the heat-insulating container 1 having the cover mounting portion 85 of the fifth embodiment, the gap A1 is formed between the first cover 10a and the second cover 10b, the gap A2 is formed between the second cover 10b and the body 5, and the body 5 is covered with two air layers composed of the gap A1 and the gap A2. Therefore, the heat insulating container 1 provided with the cover mounting portion 85 of the fifth form can be a container with a sufficient heat insulating effect. In addition, since the heat-insulated container 1 having the covering member mounting portions 85 of the fifth embodiment requires only a small number of covering member mounting portions 85 to be formed, the degree of difficulty in forming the container is reduced, and the container can be easily formed.

更に、第５形態の被覆体装着部８５は、被覆体装着時に第１被覆体１０ａと第２被覆体１０ｂを重ねた状態でシュリンク加工が可能なため、被覆体１０の装着工程を１回で済ませることができる。また、第５形態の被覆体装着部８５は、上方の第１被覆体装着部８５ａに対し、第１被覆体１０ａの上端部と第２被覆体１０ｂの上端部を一部接触した状態で係止させることができるため、被覆体１０の装着工程を容易に行うことができる。特に被覆体１０をシュリンクラベルとした場合、シュリンク加工前のラベルの装着位置決めが一度で行えるため、有効である。 Furthermore, since the covering body mounting portion 85 of the fifth embodiment can be shrink-processed while the first covering body 10a and the second covering body 10b are overlapped when the covering body is mounted, the mounting process of the covering body 10 can be completed in one step. In addition, the cover mounting portion 85 of the fifth embodiment can be engaged with the upper first cover mounting portion 85a in a state where the upper end portion of the first cover 10a and the upper end portion of the second cover 10b are partially in contact with each other. Therefore, the mounting process of the cover 10 can be easily performed. In particular, when the cover 10 is a shrink label, it is effective because the mounting and positioning of the label before shrink processing can be performed at once.

以上のように、本実施形態に係る断熱容器１は、外層となる第１被覆体１０ａと内層となる第２被覆体１０ｂの間の少なくとも一部が離間して空隙Ａ１が形成されると共に、第２被覆体１０ｂと胴部５の間の少なくとも一部が離間して空隙Ａ２が形成される。これにより、断熱容器１は、面積の大きい胴部５が空隙Ａから構成される複数の空気層によって覆われるため、断熱性能が向上し、保温・保冷性に優れた容器となる。 As described above, in the heat insulating container 1 according to the present embodiment, at least a portion of the first covering 10a serving as the outer layer and the second covering 10b serving as the inner layer are separated to form the gap A1, and at least a portion of the second covering 10b and the body portion 5 are separated to form the gap A2. As a result, the heat-insulating container 1 has the trunk portion 5 having a large area covered with a plurality of air layers formed by the gaps A, so that the heat-insulating performance is improved and the heat-insulating container 1 is excellent in heat and cold insulation.

ところで、被覆体装着部８を備えた断熱容器１において、第１被覆体１０ａよりも内層となる第２被覆体１０ｂ及び第３被覆体１０ｃは、使用する樹脂を容器本体２と同一のリサイクル工程で処理可能な樹脂とし、印刷処理を施さない構成とする。これにより、断熱容器１は、例えば印刷処理が施されたラベルである最外層の第１被覆体１０ａのみを剥がすだけで、第２被覆体１０ｂと第３被覆体１０ｃを装着したまま容器ごとリサイクルすることが可能となる。よって、断熱容器１をリサイクルする際に、容器本体２と被覆体１０の分別処理の手間を省くことができる。 By the way, in the heat insulating container 1 having the cover mounting part 8, the second cover 10b and the third cover 10c, which are inner layers than the first cover 10a, are made of a resin that can be processed in the same recycling process as the container body 2, and are not printed. As a result, the heat insulating container 1 can be recycled together with the second cover 10b and the third cover 10c attached only by peeling off only the outermost first cover 10a, which is, for example, a printed label. Therefore, when recycling the insulated container 1, the trouble of separating the container main body 2 and the cover 10 can be saved.

また、被覆体装着部８を備えた断熱容器１では、複数の被覆体１０のうち、互いに隣接する被覆体１０の端部同士が軸方向にずれた状態、すなわち、互いに隣接する被覆体１０における一方の被覆体１０の端部が、他方の被覆体１０の端部を越えた状態で被覆体装着部８に装着されている。具体的には、図３（ａ）に示される第４形態の被覆体装着部８４を備えた断熱容器１のように、第１被覆体１０ａの上端部が、第２被覆体１０ｂを越えて第１被覆体装着部８４ａに装着される。また、図３（ｂ）に示される第５形態の被覆体装着部８５を備えた断熱容器１のように、第２被覆体１０ｂの上端部が、第１被覆体１０ａを越えて第１被覆体装着部８５ａに装着される。これにより、断熱容器１では、被覆体１０の端部に爪を引っ掛け易くなるため、被覆体１０を容易に剥がすことができる。このような互いに隣接する被覆体１０の端部同士を軸方向にずれた状態で容器本体２に装着させる形態としては、図３（ａ）に示される第４形態の被覆体装着部８４を備えた断熱容器１のように、第１被覆体１０ａの上端部が、第２被覆体１０ｂを越えて第１被覆体装着部８４ａに装着される形態とするのがより好ましい。また、更に好ましくは、互いに隣接する一方の被覆体１０の端部と、他方の被覆体１０の端部とのずれ量を２ｍｍ以上としてよい。これにより、断熱容器１では、被覆体１０の端部に対して爪を更に引っ掛け易くなるという効果が得られる。 Further, in the heat-insulating container 1 having the covering body mounting portion 8, the ends of the covering bodies 10 adjacent to each other among the plurality of covering bodies 10 are shifted in the axial direction. Specifically, like the heat-insulating container 1 having the fourth form of the covering mounting portion 84 shown in FIG. Also, like the heat-insulated container 1 having the fifth form of the cover mounting portion 85 shown in FIG. As a result, in the insulated container 1, it becomes easy to hook the end of the cover 10 with a fingernail, so that the cover 10 can be easily peeled off. As a configuration in which the end portions of the coverings 10 adjacent to each other are attached to the container body 2 in a state in which the ends of the coverings 10 adjacent to each other are axially displaced from each other, it is more preferable to adopt a configuration in which the upper end portion of the first covering 10a is attached to the first covering member attaching portion 84a beyond the second covering 10b, as in the heat insulating container 1 provided with the covering member attaching portion 84 of the fourth configuration shown in FIG. 3(a). More preferably, the amount of deviation between the end of one cover 10 and the end of the other cover 10 adjacent to each other may be 2 mm or more. As a result, in the heat insulating container 1, the end of the cover 10 can be hooked with a nail more easily.

［通路］
次に、容器本体２に形成される通路９について説明する。通路９は、空隙Ａ内に溜まった液体を外部に排出するための部位である。通路９は、図４（ａ）又は図４（ｂ）に示されるように、容器本体２の外周面において空隙Ａと空隙Ａの外部とが連通するように軸方向に沿って設けられる凹溝である。空隙Ａ内に溜まる液体は、例えば常温以上の内容物を充填した後の冷却工程時に散水される冷却水、結露により容器本体２の外周面に生じた水滴など、被覆体１０の装着前後に拘わらず空隙Ａ内に溜まり得る液体のことを指す。 [aisle]
Next, the passage 9 formed in the container body 2 will be described. The passage 9 is a portion for discharging the liquid accumulated in the gap A to the outside. As shown in FIG. 4(a) or 4(b), the passage 9 is a concave groove provided along the axial direction so that the space A communicates with the outside of the space A on the outer peripheral surface of the container body 2. The liquid that accumulates in the gap A refers to a liquid that can accumulate in the gap A regardless of whether the cover 10 is attached, such as cooling water sprinkled during the cooling process after filling the contents at room temperature or higher, and water droplets generated on the outer peripheral surface of the container body 2 due to condensation.

通路９は、空隙Ａ内に溜まった液体が外部に排出可能なように、例えば空隙Ａの下部近傍、すなわち被覆体１０の下端部が装着される被覆体装着部８に設けられてよい。例えば、上述した第１形態の被覆体装着部８１を備える断熱容器１の場合、通路９は、空隙Ａ１を形成する第１被覆体１０ａの下端部が装着される下方の第１被覆体装着部８１ａと、空隙Ａ２を形成する第２被覆体１０ｂの下端部が装着される下方の第２被覆体装着部８１ｂのそれぞれに設けられてよい。 The passage 9 may be provided, for example, in the vicinity of the lower portion of the gap A, that is, in the cover mounting portion 8 to which the lower end of the cover 10 is mounted, so that the liquid accumulated in the gap A can be discharged to the outside. For example, in the case of the heat-insulated container 1 including the covering mounting portion 81 of the first embodiment described above, the passage 9 may be provided in each of the lower first covering mounting portion 81a to which the lower end portion of the first covering 10a forming the gap A1 is mounted and the lower second covering mounting portion 81b to which the lower end portion of the second covering 10b forming the gap A2 is mounted.

通路９は、形成される空隙Ａ毎に設けられていれば、各空隙Ａに対する形成数は特に限定されないが、空隙Ａ内の空気の流出入による対流を抑制させるためには、単数など形成数は少ない方が好ましい。また、通路９の形成幅は、空隙Ａ内に溜まった液体が排出可能な程度の幅寸法であれば特に限定されないが、空隙Ａ内の空気の流出入による対流を抑制させるためには、形成幅は狭い方が好ましい。更に、通路９は、被覆体１０の下端部が装着される側の被覆体装着部８に限らず、被覆体１０の上端部が装着される側の被覆体装着部８に設けられてよい。 The number of passages 9 formed for each gap A is not particularly limited as long as the passages 9 are provided for each gap A to be formed. Further, the formation width of the passage 9 is not particularly limited as long as the liquid accumulated in the gap A can be discharged, but in order to suppress the convection due to the inflow and outflow of the air in the gap A, the formation width is preferably narrow. Further, the passage 9 may be provided not only in the cover mounting part 8 on which the lower end of the cover 10 is mounted, but also in the cover mounting part 8 on which the upper end of the cover 10 is mounted.

なお、通路９は、図４に示されるように、空隙Ａと空隙Ａの外部とを連通させる凹溝として説明したが、空隙Ａ内に溜まった液体を外部に排出できればよい。そのため、通路９である凹溝の断面形状としては、図４（ｂ）に示されるような断面矩形状に限定されず、例えば断面Ｖ字状、断面半円状としてもよい。 Although passage 9 has been described as a groove that communicates gap A with the outside of gap A as shown in FIG. Therefore, the cross-sectional shape of the groove that is the passage 9 is not limited to the rectangular cross-sectional shape shown in FIG.

このように、本実施形態に係る断熱容器１では、被覆体１０と被覆体装着部８とで区画された空隙Ａ毎に溜まった液体を、通路９を介して空隙Ａから排出することができるため、液体が空隙Ａ内に残ることで生じ得る断熱性能の低下及び製品品質の低下を共に防止することができる。 As described above, in the heat insulating container 1 according to the present embodiment, the liquid accumulated in each gap A defined by the cover 10 and the cover mounting part 8 can be discharged from the gap A through the passage 9. Therefore, it is possible to prevent both the deterioration of the heat insulating performance and the deterioration of the product quality that may occur due to the liquid remaining in the gap A.

被覆体１０としてラベルを使用する場合は、断熱容器１に対するラベルの装着方式として、内容物を充填する前にラベルを装着させる、所謂「プレラベル方式」と、内容物を充填した後にラベルを装着させる、所謂「アフターラベル方式」の何れかの方式が採用される。このうち、アフターラベル方式においては、常温以上の高温の内容物が収容されると、断熱容器１に冷却水を散水して内容物を常温まで冷却する冷却工程が行われ、容器外周面が濡れた状態のままラベル装着工程へと移行する場合がある。従来の容器では、容器本体が濡れた状態でラベル装着工程に移行すると、空隙内に水が残った状態となり、製品品質上の問題となることもある。これに対し、本実施形態に係る断熱容器１では、上述した通路９を備えているため、通路９を介して空隙Ａ内に残った水を空隙Ａ内から外部に排出させることができるため、製品品質を担保することができる。また、断熱容器１は、通路９を備えることで、空隙Ａ内に残った水による断熱効果の低下を防止する効果も奏することができる。 When a label is used as the cover 10, as a method of attaching the label to the heat insulating container 1, either the so-called "pre-label method" in which the label is attached before filling the contents or the so-called "after label method" in which the label is attached after filling the contents is adopted. Among these, in the after-label method, when contents at room temperature or higher are stored, a cooling process is performed in which cooling water is sprayed on the heat-insulated container 1 to cool the contents to room temperature, and the outer peripheral surface of the container remains wet. In conventional containers, if the labeling process is started while the container body is wet, water may remain in the voids, which may pose a problem in terms of product quality. On the other hand, since the heat insulating container 1 according to the present embodiment is provided with the above-described passage 9, the water remaining in the gap A can be discharged from the gap A to the outside through the passage 9, so that the product quality can be ensured. In addition, since the heat insulating container 1 is provided with the passage 9, it is possible to prevent the water remaining in the gap A from lowering the heat insulating effect.

［被覆体］
次に、容器本体２に装着される被覆体１０について説明する。被覆体１０は、容器本体２の外周面に被覆される可撓性を有する樹脂製のフィルム又はシートである。本実施形態において、「フィルム」と「シート」は一般的に厚みで分類され、例えばＪＩＳ包装用語規格で制定されているように、厚さが２５０μｍ未満のものを「フィルム」といい、厚さが２５０μｍ以上のものを「シート」という。被覆体１０は、断熱性能を向上させる観点においては、胴部５の全周を覆うように装着することが好ましいが、少なくとも胴部５の一部を覆うように設けられていても、一般的な容器と比べて断熱性能を向上させることができる。 [Coating]
Next, the cover 10 attached to the container body 2 will be described. The covering 10 is a flexible resin film or sheet covering the outer peripheral surface of the container body 2 . In the present embodiment, "film" and "sheet" are generally classified by thickness. For example, as stipulated in the JIS Standards for Packaging Terminology, a film having a thickness of less than 250 μm is referred to as a "film", and a thickness of 250 μm or more is referred to as a "sheet". The covering 10 is preferably attached so as to cover the entire circumference of the body portion 5 from the viewpoint of improving the heat insulation performance, but even if it is provided so as to cover at least a part of the body portion 5, the heat insulation performance can be improved compared to a general container.

被覆体１０の一例としては、例えば表面に製品としての意匠性を考慮して文字、数字、図形、色、ロゴなどの各種視覚的要素となる装飾、食品表示などが予め印刷されたラベルである。また、被覆体１０は、ラベルに限定されず、印刷を施さずに単にフィルム状に成形したフィルム体又はシート状に成形したシート体であってよい。本実施形態に係る断熱容器１では、被覆体１０としてラベルを使用した例で説明し、最外層となる第１被覆体１０ａにのみ、表面に装飾及び食品表示などが印刷されることとする。 An example of the cover 10 is a label whose surface is pre-printed with various visual elements such as letters, numbers, figures, colors, logos, food labels, etc. in consideration of the design of the product. Moreover, the cover 10 is not limited to a label, and may be a film body formed into a film shape without printing or a sheet body formed into a sheet shape. In the insulated container 1 according to the present embodiment, an example in which a label is used as the cover 10 will be described, and only the first cover 10a, which is the outermost layer, is printed with decorations, food labels, and the like on its surface.

被覆体１０となるラベルは、用途などに応じてその形態を適宜選択することが可能であり、特に限定されないが、例えばシュリンクラベル、ストレッチラベル、ロールラベル（巻きラベル）に代表される一般的なラベルを採用することができる。 The form of the label to be the cover 10 can be appropriately selected depending on the application, and is not particularly limited. For example, a general label represented by a shrink label, a stretch label, and a roll label (wound label) can be used.

本実施形態に係る断熱容器１において、被覆体装着部８に装着させる被覆体１０は、１種のみを使用してもよいし、２種以上を併用してもよい。また、被覆体１０の装着方式については、使用する被覆体１０に応じて適宜選択される。更に、被覆体１０は、容器本体２で使用される樹脂（例えばポリエチレンテレフタレート樹脂）と同じ樹脂を使用し、印刷処理を施さずに構成することで、リサイクル工程が容器本体２と同一となり、容器本体２から被覆体１０を分別する手間が省け、容易にリサイクルすることができる。 In the heat insulating container 1 according to the present embodiment, the covering 10 to be attached to the covering attachment portion 8 may be used alone or in combination of two or more. Moreover, the mounting method of the cover 10 is appropriately selected according to the cover 10 to be used. Further, the covering 10 uses the same resin (for example, polyethylene terephthalate resin) as that used in the container body 2 and is configured without printing, so that the recycling process is the same as that of the container body 2, and the trouble of separating the covering 10 from the container body 2 can be saved, and recycling can be easily performed.

［作用効果］
以上のように、本実施形態に係る断熱容器１では、可撓性を有する複数の被覆体１０が、容器本体２の外周面に対して層状に被覆され、複数の被覆体１０の少なくとも一部において被覆体同士が互いに離間して空隙Ａが形成されると共に、最内層の被覆体１０の少なくとも一部が、容器本体２の外周面と離間して空隙Ａが形成される構成となっている。 [Effect]
As described above, in the heat-insulated container 1 according to the present embodiment, a plurality of flexible coverings 10 are coated on the outer peripheral surface of the container body 2 in layers, and at least some of the coverings 10 are separated from each other to form a gap A, and at least a part of the innermost covering 10 is separated from the outer peripheral surface of the container main body 2 to form a gap A.

これにより、断熱容器１は、被覆体１０同士の間の少なくとも一部及び被覆体１０と容器本体２の間の少なくとも一部が離間して複数の空隙Ａが形成され、容器本体２は、空隙Ａから構成される複数の空気層により覆われる。そのため、断熱容器１は、断熱性能が向上して保温・保冷性に優れた容器となる。 As a result, in the heat insulating container 1, at least a portion between the coverings 10 and at least a portion between the covering 10 and the container body 2 are separated to form a plurality of gaps A, and the container body 2 is covered with a plurality of air layers composed of the gaps A. Therefore, the heat-insulating container 1 has improved heat-insulating performance and is excellent in heat and cold insulation.

また、本実施形態に係る断熱容器１では、被覆体１０の端部同士が接触した状態で容器本体２に装着される構成となっている。 Further, in the heat insulating container 1 according to the present embodiment, the cover 10 is attached to the container main body 2 in a state where the ends of the cover 10 are in contact with each other.

これにより、断熱容器１は、被覆体装着部８に対し、例えば第１被覆体１０ａの上端部と第２被覆体１０ｂの上端部を接触させた状態で係止させることができる。そのため、断熱容器１は、被覆体１０としてシュリンクラベルを使用した場合、ラベル装着工程前のラベルの装着位置決めが一度に行えるため、ラベル装着工程を容易に行うことができる。 As a result, the heat-insulating container 1 can be locked to the cover mounting portion 8, for example, in a state where the upper end of the first cover 10a and the upper end of the second cover 10b are in contact with each other. Therefore, when the heat insulating container 1 uses a shrink label as the cover 10, the mounting position of the label before the label mounting process can be performed at once, so that the label mounting process can be easily performed.

また、本実施形態に係る断熱容器１では、複数の被覆体１０のうち、互いに隣接する被覆体１０の端部同士がずれた状態で容器本体２に装着される構成となっている。 Further, in the heat-insulating container 1 according to the present embodiment, the coverings 10 adjacent to each other among the plurality of coverings 10 are attached to the container main body 2 in a state in which the ends of the coverings 10 are shifted from each other.

これにより、断熱容器１は、被覆体１０の端部に爪を引っ掛け易くなるため、容器本体２から被覆体１０が剥がし易くなる。よって、断熱容器１では、リサイクルする際の容器本体２と被覆体１０の分別処理を容易に行うことができる。 As a result, the edge of the cover 10 of the heat-insulated container 1 can be easily hooked with a fingernail, so that the cover 10 can be easily peeled off from the container body 2 . Therefore, in the insulated container 1, the container main body 2 and the cover 10 can be easily separated for recycling.

また、本実施形態に係る断熱容器１では、最外層の被覆体１０（例えば第１被覆体１０ａ）にのみ印刷処理が施され、最外層の被覆体１０以外の被覆体１０（例えば第２被覆体１０ｂ、第３被覆体１０ｃ）と容器本体２とが共に同一のリサイクル工程で処理可能な材料からなり、印刷を施さずに構成されている。 In addition, in the heat insulating container 1 according to the present embodiment, only the outermost covering 10 (for example, the first covering 10a) is printed, and the coverings 10 other than the outermost covering 10 (for example, the second covering 10b and the third covering 10c) and the container body 2 are both made of materials that can be processed in the same recycling process, and are configured without printing.

これにより、断熱容器１は、最外層となる被覆体１０のみを剥がすことで、それより内層にある被覆体１０を剥がさずともリサイクル可能な状態となるため、リサイクル時の分別処理の手間を省くことができる。 As a result, the heat insulating container 1 can be recycled by peeling off only the covering 10 as the outermost layer without removing the covering 10 in the inner layer, thereby saving labor for sorting in recycling.

また、本実施形態に係る断熱容器１では、容器本体２の外周面には、被覆体１０が装着される被覆体装着部８が設けられ、被覆体装着部８は、容器本体２における被覆体装着部８が設けられていない外周面よりも径方向の外方に突出している設けられる構成となっている。 In addition, in the heat-insulated container 1 according to the present embodiment, the outer peripheral surface of the container body 2 is provided with a cover mounting portion 8 to which the cover 10 is attached, and the cover mounting portion 8 is configured to protrude outward in the radial direction from the outer peripheral surface of the container body 2 where the cover mounting portion 8 is not provided.

これにより、断熱容器１は、被覆体装着部８に被覆体１０を装着させるだけで、被覆体１０同士及び胴部５と被覆体１０との間に確実に空隙Ａを形成することができる。 As a result, the insulation container 1 can reliably form the gap A between the covers 10 and between the body 5 and the cover 10 simply by mounting the cover 10 on the cover mounting portion 8 .

また、本実施形態に係る断熱容器１では、被覆体装着部８は、被覆体１０が装着されたときに形成される空隙Ａと、空隙Ａの外部とを連通させる通路９を備えた構成となっている。 In addition, in the heat-insulating container 1 according to the present embodiment, the covering mounting portion 8 is configured to include a passage 9 that communicates between the gap A formed when the covering 10 is mounted and the outside of the gap A.

これにより、断熱容器１は、空隙Ａ内に存在する液体を外部に排出することが可能となるため、空隙Ａ内に残った液体によって生じ得る断熱性能の低下及び製品品質の低下を防止することができる。 As a result, the heat insulating container 1 can discharge the liquid existing in the gap A to the outside, so that the deterioration of the heat insulation performance and the product quality that can be caused by the liquid remaining in the gap A can be prevented.

［その他］
上述の実施形態において、断熱容器１は、特許請求の範囲に記載された「断熱容器」の一例に該当する。容器本体２は、特許請求の範囲に記載された「容器本体」の一例に該当する。被覆体装着部８、第１被覆体装着部８ａ及び８１ａ～８５ａ、第２被覆体装着部８ｂ及び８１ｂ～８５ｂ並びに第３被覆体装着部８ｃ及び８３ｃは、特許請求の範囲に記載された「被覆体装着部」の一例に該当する。通路９は、特許請求の範囲に記載された「通路」の一例に該当する。被覆体１０、１０ａ～１０ｃは、特許請求の範囲に記載された「被覆体」の一例に該当する。空隙Ａ、Ａ１～Ａ３は、特許請求の範囲に記載された「空隙」の一例に該当する。 [others]
In the above-described embodiment, the heat-insulated container 1 corresponds to an example of the "heat-insulated container" described in the claims. The container main body 2 corresponds to an example of the "container main body" described in the claims. The covering mounting portion 8, the first covering mounting portions 8a and 81a to 85a, the second covering mounting portions 8b and 81b to 85b, and the third covering mounting portions 8c and 83c are described in the claims. The passage 9 corresponds to an example of the "passage" described in the claims. The coverings 10, 10a to 10c correspond to an example of the "covering" described in the claims. The voids A and A1 to A3 correspond to an example of the "void" described in the claims.

上述の実施形態及び特許請求の範囲で使用される用語は、限定的でない用語として解釈されるべきである。例えば、「含む」という用語は、「含むものとして記載されたものに限定されない」と解釈されるべきである。「備える」という用語は、「備えるものとして記載されたものに限定されない」と解釈されるべきである。「有する」という用語は、「有するものとして記載されたものに限定されない」と解釈されるべきである。 The terms used in the above-described embodiments and claims should be interpreted as non-limiting terms. For example, the term "including" should be interpreted as "not limited to what is stated to include." The term "comprising" should be interpreted as "not limited to what is described as comprising". The term "having" should be interpreted as "not limited to what is described as having".

１断熱容器
２容器本体
３口部
４肩部
５胴部
６底部
７注出口
８（８１～８５）被覆体装着部
８ａ（８１ａ～８５ａ）第１被覆体装着部
８ｂ（８１ｂ～８４ｂ）第２被覆体装着部
８ｃ（８３ｃ）第３被覆体装着部
９通路
１０被覆体
１０ａ第１被覆体
１０ｂ第２被覆体
１０ｃ第３被覆体
Ａ（Ａ１～Ａ３）空気層となる空隙
Ｚ中心軸 1 Insulated container 2 Container body 3 Mouth 4 Shoulder 5 Body 6 Bottom 7 Spout 8 (81 to 85) Cover mounting part 8a (81a to 85a) First covering mounting part 8b (81b to 84b) Second covering mounting part 8c (83c) Third covering mounting part 9 Passage 10 Covering 10a First covering 10b Second second Coating 10c Third coating A (A1 to A3) Air gap Z Center axis

Claims

A plurality of flexible coatings are coated on the outer peripheral surface of the container body in a layered manner, and in at least a part of the coatings, the innermost coating is separated from the entire circumference of the outer peripheral surface to form a first gap over the entire circumference of the outer peripheral surface, and a plurality of the coatings including the innermost coating are separated from each other over the entire circumference to form a plurality of second gaps that are formed radially outward from the first gap over the entire circumference. having an air layer of
insulated container.

A plurality of the coverings are attached to the container body with the ends thereof in contact with each other,
The insulated container of Claim 1 .

Among the plurality of coverings, the coverings adjacent to each other are attached to the container body in a state in which the ends thereof are displaced from each other.
The insulated container according to claim 2 .

The coating other than the outermost coating is made of the same resin as the resin that constitutes the container body, and is configured without printing.
The insulated container according to any one of claims 1-3 .

The outer peripheral surface of the container body is provided with a covering mounting portion to which the covering is mounted,
The cover mounting portion protrudes radially outward from the outer peripheral surface of the container body on which the cover mounting portion is not provided,
The insulated container according to any one of claims 1-4 .

The covering mounting portion includes a passage that communicates between a gap formed when the covering is mounted and the outside of the gap,
The insulated container according to claim 5 .