JP2020146951A - Temperature indicator patch, and article with temperature indicator patch - Google Patents
Temperature indicator patch, and article with temperature indicator patch Download PDFInfo
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- 239000000463 material Substances 0.000 claims abstract description 91
- 239000010410 layer Substances 0.000 claims abstract description 76
- 238000002845 discoloration Methods 0.000 claims abstract description 24
- 239000012790 adhesive layer Substances 0.000 claims abstract description 7
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 40
- 230000007423 decrease Effects 0.000 claims description 3
- 230000004043 responsiveness Effects 0.000 abstract description 8
- 239000000975 dye Substances 0.000 description 8
- 235000013305 food Nutrition 0.000 description 5
- 238000007639 printing Methods 0.000 description 4
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 239000005033 polyvinylidene chloride Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 229920000298 Cellophane Polymers 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 235000012055 fruits and vegetables Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007644 letterpress printing Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 235000012046 side dish Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
Abstract
Description
本発明は、示温貼付材および示温貼付材付き物品に関する。 The present invention relates to a temperature-indicating patch and an article with a temperature-indicating patch.
従来、温度に応じて変色する変色材の応用が考えられており、例えば、特許文献１では、変色材を含む変色層が支持体上に積層された積層体を、示温材として応用することが開示されている。このような示温材を被着体に貼付すれば、被着体の温度変化を知ることができ、食品等の温度管理に好適である。 Conventionally, the application of a discoloring material that changes color according to temperature has been considered. For example, in Patent Document 1, a laminate in which a discoloring layer containing a discoloring material is laminated on a support can be applied as a temperature indicating material. It is disclosed. If such a temperature indicating material is attached to the adherend, the temperature change of the adherend can be known, which is suitable for temperature control of foods and the like.
しかしながら、上記従来技術の積層体は、基材層である支持体の表側の面に変色層を有しており、被着体に貼付された際、変色層と被着体との間に、支持体が介在するため、それらの間の熱伝達が遮られ、被着体の温度変化に対する応答性が低下する虞がある。 However, the laminate of the prior art has a discoloration layer on the front surface of the support which is a base material layer, and when the laminate is attached to the adherend, the discoloration layer and the adherend have a discoloration layer. Since the support is interposed, the heat transfer between them may be blocked, and the responsiveness of the adherend to the temperature change may be lowered.
さらに、上記従来技術のように、基材層の表側の面に変色層が設けられていると、変色層が擦過等によって傷ついたり剥がれたりし、そのような応答性自体が失われてしまう虞もある。 Further, if the discoloration layer is provided on the front surface of the base material layer as in the above-mentioned prior art, the discoloration layer may be damaged or peeled off by scratching or the like, and such responsiveness itself may be lost. There is also.
また、上記従来技術では、例として、基材層である支持体が透明である形態が開示されているが、基材層に例えば文字等の情報が表示されている場合、基材層を通して被着体が透けて見えると、基材層に表示されている情報は、背景となる被着体の色や図柄等に紛れて視認し難くなる虞がある。 Further, in the above-mentioned prior art, as an example, a form in which the support which is a base material layer is transparent is disclosed, but when information such as characters is displayed on the base material layer, it is covered through the base material layer. If the adherend can be seen through, the information displayed on the base material layer may be difficult to see because of the color or pattern of the adherend as the background.
本発明は、それらの課題に鑑みてなされ、被着体の温度変化に対する応答性が良好で失われ難く、かつ基材層に表示された情報を視認し易い示温貼付材および示温貼付材付き物品を提供することを目的とする。 The present invention has been made in view of these problems, and has a good responsiveness to temperature changes of the adherend, is not easily lost, and is easy to see the information displayed on the base material layer. The purpose is to provide.
上記目的を達成するための本発明の示温貼付材は、温度に応じて変色する変色材を含む粘着剤層、および、前記粘着剤層と積層された基材層を有し、前記基材層側から前記粘着剤層の変色を視認可能であるとともに、前記変色の前後を通じて１０％以上のヘーズを有する。 The temperature-indicating patch material of the present invention for achieving the above object has a pressure-sensitive adhesive layer containing a color-changing material that changes color depending on temperature, and a base material layer laminated with the pressure-sensitive adhesive layer. The discoloration of the pressure-sensitive adhesive layer can be visually recognized from the side, and a haze of 10% or more is obtained before and after the discoloration.
上記目的を達成するための本発明の示温貼付材付き物品は、前記示温貼付材と、前記示温貼付材が貼付された物品と、を有する。 The article with the temperature-indicating sticking material of the present invention for achieving the above object includes the temperature-indicating sticking material and the article to which the temperature-indicating sticking material is attached.
上記構成を有する発明では、被着体に接する粘着剤層に変色材が含まれており、被着体と変色材との間で熱が伝わり易いため、被着体の温度変化に対する応答性が良好である。さらに、変色材を含む粘着剤層が、被着体と接する側と反対の表側において、基材層によって擦過等から保護されるため、変色材の応答性が失われ難い。 In the invention having the above configuration, the pressure-sensitive adhesive layer in contact with the adherend contains a discoloring material, and heat is easily transferred between the adherend and the discoloring material, so that the responsiveness to the temperature change of the adherend is improved. It is good. Further, since the pressure-sensitive adhesive layer containing the discoloring material is protected from scratches and the like by the base material layer on the front side opposite to the side in contact with the adherend, the responsiveness of the discoloring material is not easily lost.
また、上記構成を有する発明では、粘着剤層の変色の前後を通じて１０％以上のヘーズを示温貼付材が有し、これによって、示温貼付材は不透明になっているため、被着体が透け難く、基材層に情報が表示されていても、それを視認し易い。 Further, in the invention having the above structure, the temperature-indicating adhesive has a haze of 10% or more before and after the discoloration of the pressure-sensitive adhesive layer, which makes the temperature-indicating adhesive opaque, so that the adherend is difficult to see through. Even if the information is displayed on the base material layer, it is easy to see it.
以下、添付した図面を参照しながら、本発明の実施形態を説明する。なお、図面の寸法比率は、説明の都合上誇張されており、実際の比率とは異なる。 Hereinafter, embodiments of the present invention will be described with reference to the attached drawings. The dimensional ratios in the drawings are exaggerated for convenience of explanation and differ from the actual ratios.
図１に示すように、実施形態の示温貼付材１００は、粘着剤層１１０および基材層１２０を有するとともに、基材層１２０の面に設けられた情報表示部１３０を有する。 As shown in FIG. 1, the temperature indicating patch 100 of the embodiment has the pressure-sensitive adhesive layer 110 and the base material layer 120, and also has an information display unit 130 provided on the surface of the base material layer 120.
粘着剤層１１０は、温度に応じて変色する変色材を含んでおり、変色材の変色に応じて異なる色調を示す。粘着剤層１１０は、変色材を粘着剤中に分散させた状態で含んでいる。ここで、粘着剤は、例えば、アクリル系粘着剤、ウレタン系粘着剤、シリコーン系粘着剤、スチレン系熱可塑性エラストマー、ビニルエーテル共重合体、天然ゴム等であるが、特に限定されない。 The pressure-sensitive adhesive layer 110 contains a discoloring material that changes color depending on the temperature, and exhibits a different color tone depending on the discoloration of the discoloring material. The pressure-sensitive adhesive layer 110 contains a discoloring material in a state of being dispersed in the pressure-sensitive adhesive. Here, the pressure-sensitive adhesive is, for example, an acrylic pressure-sensitive adhesive, a urethane-based pressure-sensitive adhesive, a silicone-based pressure-sensitive adhesive, a styrene-based thermoplastic elastomer, a vinyl ether copolymer, a natural rubber, or the like, but is not particularly limited.
粘着剤層１１０に含まれる変色材は、温度低下にともない変色する性質を有する。変色材は、例えば、所定の温度以下になると変色し、その後、所定の温度より高くなると元に戻る可逆的変化を示すが、その変色温度は変色材によって異なり、用途に応じて好適な変色材が選択される。 The discoloring material contained in the pressure-sensitive adhesive layer 110 has a property of discoloring as the temperature decreases. For example, the discoloring material shows a reversible change in which the color changes when the temperature falls below a predetermined temperature and then returns to the original value when the temperature rises above the predetermined temperature. However, the discoloring temperature varies depending on the discoloring material and is suitable for the application. Is selected.
そのような可逆的変化を示す変色材としては、特に限定されないが、例えば、ロイコ系染料、顕色剤、および溶媒が封じ込められたマイクロカプセルが挙げられる。ロイコ系染料は、酸化還元により可逆的に色が変化する有機色素である。顕色剤は、ロイコ系染料と結合して発色させる酸性物質である。ロイコ系染料は、顕色剤と接触すると互いの電子の享受により発色する。溶媒は、それらの接触・離隔を制御する。所定の温度以上になると溶媒が溶け、ロイコ系染料と顕色剤との間に入り込んで、それらを引き離す。これによって、ロイコ系染料と顕色剤との間の電子の享受が抑制され、発色が元に戻る。 The discoloring material exhibiting such a reversible change is not particularly limited, and examples thereof include microcapsules containing a leuco dye, a color developer, and a solvent. Leuco dyes are organic dyes whose color changes reversibly by redox. The color developer is an acidic substance that binds to a leuco dye to develop a color. When the leuco dye comes into contact with the color developer, it develops a color by enjoying each other's electrons. The solvent controls their contact and separation. When the temperature rises above a predetermined temperature, the solvent melts, enters between the leuco dye and the color developer, and separates them. As a result, the enjoyment of electrons between the leuco dye and the color developer is suppressed, and the color development is restored.
基材層１２０は、粘着剤層１１０と積層されており、また、基材層１２０側から粘着剤層１１０の変色を視認可能な透明性を有している。粘着剤層１１０の変色が視認可能であれば、基材層１２０は、可視光領域においてどの程度の透過率を有するかは特に限定されないが、例えば７０％以上、より好ましくは８０％以上の透過率を有する。 The base material layer 120 is laminated with the pressure-sensitive adhesive layer 110, and has transparency so that the discoloration of the pressure-sensitive adhesive layer 110 can be visually recognized from the base material layer 120 side. As long as the discoloration of the pressure-sensitive adhesive layer 110 is visible, the transmittance of the base material layer 120 in the visible light region is not particularly limited, but for example, 70% or more, more preferably 80% or more of transmittance is transmitted. Have a rate.
基材層１２０の形成材料は、特に限定されないが、例えば、ポリエチレンやポリプロピレン等のポリオレフィン系フィルム、ポリエチレンテレフタレート等のポリエステルフィルム、セロファン、ポリ塩化ビニリデン、ポリ塩化ビニリデン共重合体、ポリフッ化ビニリデン、ポリ塩化ビニル、ポリスチレン、ポリメタクリル酸メチル、ポリカーボネート、ナイロン等のプラスチックフィルムである。 The material for forming the base material layer 120 is not particularly limited, but for example, a polyolefin film such as polyethylene or polypropylene, a polyester film such as polyethylene terephthalate, cellophane, polyvinylidene chloride, polyvinylidene chloride copolymer, polyvinylidene chloride, poly It is a plastic film such as vinyl chloride, polystyrene, polymethyl methacrylate, polycarbonate, and nylon.
基材層１２０が透明である一方で、粘着剤層１１０が色を有しているため、示温貼付材１００は、ある程度のヘーズ（ｈａｚｅ）を有している。具体的に、示温貼付材１００は、粘着剤層１１０の変色の前後を通じて、１０％以上のヘーズを有し、より好ましくは、３０％以上のヘーズを有する。ヘーズの上限値は、例えば１００％以下であるが、特に限定されない。 Since the base material layer 120 is transparent and the pressure-sensitive adhesive layer 110 has a color, the temperature-indicating patch 100 has a certain amount of haze. Specifically, the temperature indicating patch 100 has a haze of 10% or more, more preferably 30% or more, before and after the discoloration of the pressure-sensitive adhesive layer 110. The upper limit of the haze is, for example, 100% or less, but is not particularly limited.
ヘーズは、ＪＩＳ Ｋ７１３６：２０００に準拠し、ヘーズメーター（例えば日本電色工業株式会社製ＮＤＨ５０００）によって測定できる。また、ヘーズは、粘着剤層１１０に含まれる変色材の割合によって調整でき、例えば、粘着剤層１１０に対し、１質量％以上の変色材を含ませることによって、１０％以上のヘーズが得られる。 The haze conforms to JIS K7136: 2000 and can be measured by a haze meter (for example, NDH5000 manufactured by Nippon Denshoku Industries Co., Ltd.). Further, the haze can be adjusted by the ratio of the discoloring material contained in the pressure-sensitive adhesive layer 110. For example, by adding 1% by mass or more of the discoloring material to the pressure-sensitive adhesive layer 110, a haze of 10% or more can be obtained. ..
情報表示部１３０は、基材層１２０の面に設けられており、情報を表示する印刷層１３１によって構成されている。本実施形態において、情報表示部１３０は、基材層１２０に対し、粘着剤層１１０とは反対側の表側の面に設けられているが、これに限定されず、粘着剤層１１０側の面に設けられてもよい。 The information display unit 130 is provided on the surface of the base material layer 120, and is composed of a print layer 131 for displaying information. In the present embodiment, the information display unit 130 is provided on the front surface of the base material layer 120 opposite to the pressure-sensitive adhesive layer 110, but is not limited to this, and the surface on the pressure-sensitive adhesive layer 110 side. It may be provided in.
印刷層１３１は、どのように形成されるか特に限定されず、例えば、フレキソ印刷、オフセット印刷、凸版印刷、シルクスクリーン印刷等によって形成され、これらは、一定の図柄等を大量に作製するのに適する。一方、熱転写方式、インクジェット方式、電子写真（静電）方式等は、例えばシリアル番号のような可変情報を印すのに適する。 The printing layer 131 is not particularly limited in how it is formed, and is formed by, for example, flexographic printing, offset printing, letterpress printing, silk screen printing, etc., and these are used for producing a large number of constant patterns or the like. Suitable. On the other hand, the thermal transfer method, the inkjet method, the electrophotographic (electrostatic) method and the like are suitable for marking variable information such as a serial number.
印刷層１３１の色調は、特に限定されないが、粘着剤層１１０の色調とは変色の前後を通じて異なることが好ましい。このようにすれば、情報表示部１３０で表示される情報が、粘着剤層１１０の色調と同化し難く、視認し易い。 The color tone of the print layer 131 is not particularly limited, but is preferably different from the color tone of the pressure-sensitive adhesive layer 110 before and after the discoloration. In this way, the information displayed on the information display unit 130 is difficult to assimilate with the color tone of the pressure-sensitive adhesive layer 110 and is easy to see.
次に示温貼付材１００の使用について述べる。 Next, the use of the temperature indicating patch 100 will be described.
図２に示すように、示温貼付材１００は、粘着剤層１１０を介して物品１０（被着体）に貼付して使用され、粘着剤層１１０の色によって、物品１０の温度が所定の温度以下になっているか、あるいはそれよりも高くなっているかを示す。 As shown in FIG. 2, the temperature indicating sticking material 100 is used by being attached to the article 10 (adhesive body) via the adhesive layer 110, and the temperature of the article 10 is set to a predetermined temperature depending on the color of the adhesive layer 110. Indicates whether it is below or higher than that.
図２に示した例では、物品１０は、店で販売される弁当もしくは惣菜であり、物品１０に示温貼付材１００が貼付された示温貼付材付き物品２０は、冷蔵して所定の温度以下で店の棚に陳列される。 In the example shown in FIG. 2, the article 10 is a lunch box or a side dish sold in a store, and the article 20 with the temperature-indicating sticking material 100 attached to the article 10 is refrigerated at a predetermined temperature or lower. Displayed on store shelves.
ただし、これは一例に過ぎず、物品１０は、弁当もしくは惣菜以外にも、温度管理が必要な、青果、鮮魚、精肉等の生鮮食品であってもよく、または、ペットボトル、ビン、缶、もしくはグラス等に入った飲料であってもよい。 However, this is only an example, and the article 10 may be a fresh food such as fruits and vegetables, fresh fish, meat, etc., which requires temperature control, in addition to the lunch or prepared food, or a PET bottle, bottle, can, etc. Alternatively, it may be a beverage in a glass or the like.
物品１０に貼付された示温貼付材１００において、粘着剤層１１０が変色した状態であれば、物品１０が所定の温度以下になっていることが分かり、一方、粘着剤層１１０が変色する前の状態であれば、物品１０の温度が所定の温度よりも高いことが分かる。 In the temperature indicating pasting material 100 attached to the article 10, if the pressure-sensitive adhesive layer 110 is in a discolored state, it is found that the temperature of the article 10 is below a predetermined temperature, while before the pressure-sensitive adhesive layer 110 is discolored. In the state, it can be seen that the temperature of the article 10 is higher than the predetermined temperature.
粘着剤層１１０は、変色前、不透明で白濁した状態であるが、所定の温度以下では、その変色前の色調とは異なる色調を示す。所定の温度以下となった変色後の色調は、例えば、冷やされたことをイメージし易い青系であるが、これに限定されない。変色後の色調は、粘着剤層１１０に含ませる変色材を適宜選択することによって調整できる。 The pressure-sensitive adhesive layer 110 is in an opaque and cloudy state before discoloration, but at a predetermined temperature or lower, it exhibits a color tone different from the color tone before the discoloration. The color tone after discoloration below a predetermined temperature is, for example, bluish, which makes it easy to imagine that it has been cooled, but is not limited to this. The color tone after discoloration can be adjusted by appropriately selecting the discoloring material to be contained in the pressure-sensitive adhesive layer 110.
次に本実施形態の作用効果を述べる。 Next, the action and effect of this embodiment will be described.
本実施形態では、物品１０に接する粘着剤層１１０に変色材が含まれており、物品１０と変色材との間で熱が伝わり易いため、物品１０の温度変化に対する応答性が良好である。さらに、変色材を含む粘着剤層１１０が、物品１０と接する側と反対の表側において、基材層１２０によって擦過等から保護されるため、変色材の応答性が失われ難い。 In the present embodiment, the pressure-sensitive adhesive layer 110 in contact with the article 10 contains a discoloring material, and heat is easily transferred between the article 10 and the discoloring material, so that the responsiveness of the article 10 to a temperature change is good. Further, since the pressure-sensitive adhesive layer 110 containing the discoloring material is protected from scratches and the like by the base material layer 120 on the front side opposite to the side in contact with the article 10, the responsiveness of the discoloring material is not easily lost.
また、本実施形態では、示温貼付材１００が、粘着剤層１１０の変色の前後を通じて１０％以上のヘーズを有し、これによって、示温貼付材１００は不透明になっているため、物品１０が透け難く、情報表示部１３０の情報を視認し易い。 Further, in the present embodiment, the temperature-indicating sticking material 100 has a haze of 10% or more through before and after the discoloration of the pressure-sensitive adhesive layer 110, which makes the temperature-indicating sticking material 100 opaque, so that the article 10 is transparent. It is difficult and it is easy to visually recognize the information of the information display unit 130.
具体的に図３に示すように、本実施形態では、情報表示部１３０が、情報の一例として黒色の文字や数字で賞味期限を表示しているが、仮に示温貼付材１００が透明で、物品１０が透けて見えると、情報表示部１３０の黒色で示された情報が、背景となる物品１０の黒色と同化して視認し難くなる。 Specifically, as shown in FIG. 3, in the present embodiment, the information display unit 130 displays the expiration date with black letters and numbers as an example of the information, but tentatively, the temperature indicating sticking material 100 is transparent and the article. When the 10 is seen through, the information shown in black in the information display unit 130 becomes assimilated with the black in the background article 10 and becomes difficult to see.
一方、本実施形態では、示温貼付材１００が、１０％以上のヘーズを有し、不透明であるため、物品１０が透け難く、情報表示部１３０の情報を視認し易い。 On the other hand, in the present embodiment, since the temperature indicating sticking material 100 has a haze of 10% or more and is opaque, the article 10 is difficult to see through and the information in the information display unit 130 is easily visible.
さらに、情報表示部１３０が、示温貼付材１００の変色の前後を通じて、その前後で示される色調とは異なる色調で情報を表示するようにすれば、示温貼付材１００の変化する色調と、情報表示部１３０が表示する情報の色調とが同化し難いため、情報表示部１３０の情報が特に視認し易い。 Further, if the information display unit 130 displays information in a color tone different from the color tone shown before and after the discoloration of the temperature indicator sticking material 100, the changing color tone of the temperature indicator sticking material 100 and the information display Since it is difficult to assimilate the color tone of the information displayed by the unit 130, the information of the information display unit 130 is particularly easy to see.
例えば、示温貼付材１００の色調が、白系と青系との間で変化する場合、情報表示部１３０が、それらと異なる黒系の色調で情報を表示すれば、情報表示部１３０の情報が目立ち、視認し易い。 For example, when the color tone of the temperature indicating sticking material 100 changes between white and blue, if the information display unit 130 displays information in a black color tone different from those, the information in the information display unit 130 stands out. , Easy to see.
本実施形態では、示温貼付材１００が、粘着剤層１１０に含まれる変色材に応じて、温度低下にともない変色し、これによって、物品１０が所定の温度以下であることが一目瞭然であるため、物品１０が冷やされたことを容易に知ることができる。 In the present embodiment, the temperature indicating sticking material 100 is discolored as the temperature decreases according to the discoloring material contained in the pressure-sensitive adhesive layer 110, so that it is obvious that the article 10 is below a predetermined temperature. It can be easily known that the article 10 has been cooled.
本発明は、上述した実施形態に限定されるものではなく、特許請求の範囲内で種々改変できる。 The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the claims.
例えば、本発明の示温貼付材がどのような形状を有するかは、特に限定されず、上記実施形態の示温貼付材１００のように矩形形状でなくてもよく、例えば長尺形状等の他の形状であってもよい。 For example, the shape of the temperature-indicating sticker of the present invention is not particularly limited, and may not be rectangular like the temperature-indicating sticker 100 of the above-described embodiment, and other shapes such as a long shape may be used. It may be in shape.
また、上記実施形態のラベル１００は、粘着剤層１１０、基材層１２０、および印刷層１３１を有するが、それら以外の層を有する形態も本発明の範囲に含まれ、例えば、印刷層１３１を覆う透明なラミネートフィルムを保護層として有してもよい。 Further, the label 100 of the above embodiment has the pressure-sensitive adhesive layer 110, the base material layer 120, and the printing layer 131, but a form having other layers is also included in the scope of the present invention, for example, the printing layer 131. A transparent laminated film may be provided as a protective layer.
また、本発明の示温貼付材が貼付される物品も、上記実施形態のように食品や飲料に限定されず、家電等の電気製品であってもよく、例えばクーラーの送風口の近傍に本発明の示温貼付材を貼付すれば、所定の温度以下に冷やされていることが一目で分かる。 Further, the article to which the temperature indicating sticking material of the present invention is attached is not limited to foods and beverages as in the above embodiment, and may be an electric product such as a home appliance. For example, the present invention may be in the vicinity of the air outlet of the cooler. It can be seen at a glance that the temperature has been cooled to a predetermined temperature or lower by pasting the temperature indicating pasting material.
また、上記実施形態では、粘着剤層１１０に含まれる変色材が、所定の温度で可逆的に変色するが、本発明は、このような形態に限定されない。本発明は、粘着剤層に含まれる変色材が、所定の温度で不可逆的に変色する形態も含む。 Further, in the above embodiment, the discoloring material contained in the pressure-sensitive adhesive layer 110 is reversibly discolored at a predetermined temperature, but the present invention is not limited to such an embodiment. The present invention also includes a form in which the discoloring material contained in the pressure-sensitive adhesive layer is irreversibly discolored at a predetermined temperature.
不可逆的に変色する変色材は、例えば、一旦所定の温度以上となって変色すると、その温度より低くなっても元の色には戻らず、変色したままである。このため、変色材の変色が、所定の温度以上になった形跡となり、それによって、例えば、冷凍または冷蔵して輸送していた食品が、輸送途中で一時的に常温になっていたというような、温度履歴を表示することができる。 A discoloring material that discolors irreversibly does not return to the original color even if the temperature drops below a predetermined temperature, and remains discolored. For this reason, the discoloration of the discoloring material becomes a sign that the temperature has exceeded a predetermined temperature, so that, for example, the food that has been frozen or refrigerated and transported has temporarily reached room temperature during transportation. , The temperature history can be displayed.
あるいは、不可逆的に変色する変色材は、所定の温度以下となった形跡を示してもよく、この場合、変色材は、一旦所定の温度以下になって変色すると、その温度より高くなっても元の色には戻らず、変色したままとなる。 Alternatively, the discoloring material that discolors irreversibly may show evidence that the temperature has fallen below a predetermined temperature. In this case, once the discoloring material becomes discolored below a predetermined temperature, the discoloring material may become higher than that temperature. It does not return to its original color and remains discolored.
上記実施形態では、変色材として、ロイコ系染料を含む例が挙げられているが、これに限定されず、変色材は、例えば、金属錯体やサーモクロミック液晶等であってもよい。 In the above embodiment, an example including a leuco-based dye is given as the discoloring material, but the discoloring material is not limited to this, and the discoloring material may be, for example, a metal complex or a thermochromic liquid crystal.
１０ 物品、
２０ 示温貼付材付き物品、
１００ 示温貼付材、
１１０ 粘着剤層、
１２０ 基材層、
１３０ 情報表示部、
１３１ 印刷層。
10 goods,
20 Articles with temperature indicator,
100 temperature indicator,
110 Adhesive layer,
120 substrate layer,
130 Information display unit,
131 print layer.
Claims (4)
前記粘着剤層と積層された基材層を有し、
前記基材層側から前記粘着剤層の変色を視認可能であるとともに、
前記変色の前後を通じて１０％以上のヘーズを有する、示温貼付材。 An adhesive layer containing a discoloring material that changes color depending on the temperature, and
It has a base material layer laminated with the pressure-sensitive adhesive layer, and has
The discoloration of the pressure-sensitive adhesive layer can be visually recognized from the base material layer side, and
A temperature-indicating patch having a haze of 10% or more before and after the discoloration.
前記示温貼付材が貼付された物品と、を有する、示温貼付材付き物品。 The temperature indicating sticking material according to any one of claims 1 to 3,
An article with a temperature-indicating sticking material, comprising an article to which the temperature-indicating sticking material is attached.
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| JP2019047299A JP2020146951A (en) | 2019-03-14 | 2019-03-14 | Temperature indicator patch, and article with temperature indicator patch |
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| JP2019047299A JP2020146951A (en) | 2019-03-14 | 2019-03-14 | Temperature indicator patch, and article with temperature indicator patch |
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| JP2020146951A true JP2020146951A (en) | 2020-09-17 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001234134A (en) * | 2000-02-25 | 2001-08-28 | Pilot Ink Co Ltd | Reversible temperature sensitive color changing pressure sensitive adhesive tape |
| JP2006273938A (en) * | 2005-03-28 | 2006-10-12 | Nitto Denko Cs System Kk | Adhesive tape for sealing, sealing body, method for checking temperature variation of sealing body |
| JP2014101440A (en) * | 2012-11-20 | 2014-06-05 | Pilot Corporation | Metallic sheen-imparting reversible thermochromic adhesive tape and method for manufacturing a metallic sheen-imparting reversible thermochromic adhesive tape |
| JP2017125741A (en) * | 2016-01-13 | 2017-07-20 | 大日本印刷株式会社 | thermometer |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001234134A (en) * | 2000-02-25 | 2001-08-28 | Pilot Ink Co Ltd | Reversible temperature sensitive color changing pressure sensitive adhesive tape |
| JP2006273938A (en) * | 2005-03-28 | 2006-10-12 | Nitto Denko Cs System Kk | Adhesive tape for sealing, sealing body, method for checking temperature variation of sealing body |
| JP2014101440A (en) * | 2012-11-20 | 2014-06-05 | Pilot Corporation | Metallic sheen-imparting reversible thermochromic adhesive tape and method for manufacturing a metallic sheen-imparting reversible thermochromic adhesive tape |
| JP2017125741A (en) * | 2016-01-13 | 2017-07-20 | 大日本印刷株式会社 | thermometer |
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