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JPH0518433B2 - - Google Patents

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Publication number
JPH0518433B2
JPH0518433B2 JP62211417A JP21141787A JPH0518433B2 JP H0518433 B2 JPH0518433 B2 JP H0518433B2 JP 62211417 A JP62211417 A JP 62211417A JP 21141787 A JP21141787 A JP 21141787A JP H0518433 B2 JPH0518433 B2 JP H0518433B2
Authority
JP
Japan
Prior art keywords
heat
label
sensitive
plasticizer
paper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP62211417A
Other languages
Japanese (ja)
Other versions
JPS6456480A (en
Inventor
Takao Ijiri
Shoji Sakakyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Terumo Corp
Original Assignee
Terumo Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Terumo Corp filed Critical Terumo Corp
Priority to JP62211417A priority Critical patent/JPS6456480A/en
Publication of JPS6456480A publication Critical patent/JPS6456480A/en
Publication of JPH0518433B2 publication Critical patent/JPH0518433B2/ja
Granted legal-status Critical Current

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  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、感熱性ラベルに関する。詳しく述べ
ると、血液バツグ、輸液バツグ等の貼着に好適な
感熱性ラベルに関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to heat-sensitive labels. More specifically, the present invention relates to a heat-sensitive label suitable for attaching to blood bags, infusion bags, etc.

(従来の技術及び問題点) 採血された血液の型(A、B、O、RH等)を
表示するため、血液バツグ、輸液バツグ等の可撓
性容器にラベルを貼着する必要がある。
(Prior Art and Problems) In order to display the type of blood collected (A, B, O, RH, etc.), it is necessary to attach a label to a flexible container such as a blood bag or an infusion bag.

従来、このような容器に対して常温で貼着性を
有するラベルを圧接して貼着する感圧ラベルが用
いられていた。感圧接着剤としては、天然ゴム、
SBR、再生ゴム等のゴム系感圧接着剤、アクリ
ル系感圧接着剤、ポリビニルエーテルおよびシリ
コーン等が用いられていた。このようなラベル
は、常温で剥れたり、経時的にラベルの接着力が
低下するという恐れがあつた。例えば、このよう
な血液バツグ用のラベルは、もし万一剥れたり、
故意あるいは事故により貼り替えられた場合に
は、輸血の際に血液不適合を生じ重大な事態を招
く恐れがあつた。
Conventionally, pressure-sensitive labels have been used in which labels that are adhesive at room temperature are attached to such containers by pressure contact. Pressure-sensitive adhesives include natural rubber,
Rubber-based pressure-sensitive adhesives such as SBR and recycled rubber, acrylic-based pressure-sensitive adhesives, polyvinyl ether, and silicone were used. There was a fear that such labels would peel off at room temperature or that the adhesive strength of the label would decrease over time. For example, if a label for a blood bag like this were to come off,
If the sticker was replaced intentionally or by accident, there was a risk of blood incompatibility during blood transfusion, which could lead to a serious situation.

そこで、血液バツグ等より剥れない接着剤を有
するラベルの開発が望まれていた。また、従来の
感圧ラベルは粘着層を有しているので、台紙を必
要とするかあるいは数葉を重ね合わせた場合で
も、各剥離作業を有するために作業性が低かつ
た。感圧性接着剤に代り感熱性接着剤が、その問
題点を解決すべく鋭意研究が行なわれたが、満足
にゆく強度を有するラベルは今だ見い出し得なか
つた。
Therefore, it has been desired to develop a label with an adhesive that does not peel off from blood bags or the like. Further, since conventional pressure-sensitive labels have an adhesive layer, they require a mount or even when several sheets are stacked one on top of the other, each label has to be peeled off, resulting in low workability. Intensive research has been conducted to replace pressure-sensitive adhesives with heat-sensitive adhesives to solve this problem, but a label with satisfactory strength has not yet been found.

(発明が解決しようとする問題点) 本発明の目的は、従来技術の問題点を解決し、
常温で経時的にラベルの接着力が低下してラベル
が剥れるこのない、新規な感熱性の接着剤を塗布
したラベルを提供することにある。
(Problems to be Solved by the Invention) The purpose of the present invention is to solve the problems of the prior art,
To provide a label coated with a novel heat-sensitive adhesive, which does not cause the adhesive force of the label to decrease over time at room temperature and cause the label to peel off.

(問題点を解決するための手段) 本発明は、接着性に優れた感熱性ラベルであつ
て、シート状基材の片面にメチルメタクリレート
(MMA)−ブチルメタクリレート(BMA)共重
合体と炭素数10〜33のアルキルまたはシクロアル
キルのフタル酸エステル類または炭素数9〜22の
脂肪酸エステル類である可塑剤を含有する感熱性
接着剤層を形成したことを特徴とする感熱性ラベ
ルを提供するものである。
(Means for Solving the Problems) The present invention is a heat-sensitive label with excellent adhesive properties, which includes a sheet-like base material having a methyl methacrylate (MMA)-butyl methacrylate (BMA) copolymer and a carbon number Provided is a heat-sensitive label characterized by forming a heat-sensitive adhesive layer containing a plasticizer which is an alkyl or cycloalkyl phthalate ester having 10 to 33 carbon atoms or a fatty acid ester having 9 to 22 carbon atoms. It is.

上記基材は、天然繊維紙、化学繊維紙、フイル
ム合成紙およびフアイバー合成紙より成る群から
選ばれたいずれか1つであることが好ましい。
The base material is preferably any one selected from the group consisting of natural fiber paper, chemical fiber paper, film synthetic paper, and fiber synthetic paper.

また、上記MMAとBMAとの比率(モル)が
60:40〜30:70であることが好ましい。
Also, the ratio (mol) of the above MMA and BMA is
The ratio is preferably 60:40 to 30:70.

さらに、上記重合体と可塑剤との比率(重量)
が85:15〜70:30であつてもよい。
Furthermore, the ratio (weight) of the above polymer and plasticizer
may be between 85:15 and 70:30.

上記可塑剤は、特にジシクロヘキシルフタレー
ト(DCHP)、ジオクチルフタレート(DOP)、
ジオクチルアジペイト(DOA)およびジオクチ
ルセバケート(DOS)より成る群から選ばれた
少なくとも1種のものであつてもよい。
The plasticizers mentioned above are in particular dicyclohexyl phthalate (DCHP), dioctyl phthalate (DOP),
It may be at least one selected from the group consisting of dioctyl adipate (DOA) and dioctyl sebacate (DOS).

(作用) 本発明の感熱性ラベルは、可撓性材料面にラベ
ルを貼着するものであり、特に血液バツグ、輸液
バツグ等の医療用容器を対象とする。
(Function) The heat-sensitive label of the present invention is for attaching a label to a flexible material surface, and is particularly intended for medical containers such as blood bags and infusion bags.

本発明のシート状基材は、片面が鉛筆またはボ
ールペン、サインペン、マジツク(ペン)等の水
性または油性インクで記載可能な面であればよ
く、一方他面は、感熱性接着剤が塗布できればよ
い。
The sheet-like base material of the present invention may have one side that can be written on with water-based or oil-based ink such as a pencil, ballpoint pen, felt-tip pen, or magic pen, while the other side may be coated with a heat-sensitive adhesive. .

このような基材としては、紙であればよく、例
えば天然繊維紙、化学繊維紙、フイルム合成紙お
よびフアイバー合成紙等がある。ここで、天然繊
維紙とは植物繊維の他に石綿のような鉱物繊維や
動物繊維を用いた紙であり、化学繊維紙とはビニ
ロン、ナイロン、アクリル、レーヨン、ポリプロ
ピレン等の化学繊維を分散剤で水中に懸濁させ、
抄紙機のような装置を用いてウエブを形成し、高
分子接着剤あるいは自己融着した紙であり、フイ
ルム合成紙とはプラスチツクフイルムを用いて紙
と類似の性質を持たせたものであり、フアイバー
合成紙とは不織布法または合成パルプ法によりプ
ラスチツクの微細なフアイバーをパルプ状に作り
それをからみ合わせてシート状にしたものであ
り、これらの紙の中で、保存性、取扱い性の点か
ら天然繊維紙が好ましい。
Such a base material may be any paper, such as natural fiber paper, chemical fiber paper, film synthetic paper, fiber synthetic paper, and the like. Here, natural fiber paper is paper that uses mineral fibers such as asbestos or animal fibers in addition to plant fibers, and chemical fiber paper is paper that uses chemical fibers such as vinylon, nylon, acrylic, rayon, and polypropylene as a dispersant. Suspend it in water with
It is paper that is formed into a web using a paper machine-like device and is bonded using polymeric adhesive or self-bonding.Film synthetic paper is paper that uses plastic film to have properties similar to paper. Fiber synthetic paper is made from fine plastic fibers made into pulp using the non-woven fabric method or synthetic pulp method and then intertwined to form a sheet. Natural fiber paper is preferred.

本発明に使用する共重合体は、ラベルと血液バ
ツグ等を貼着する接着剤の主成分となるものであ
りMMAとBMAの共重合体(分子量9000〜
60000、好ましくは35000〜50000)であり、
MMAとBMAの比率(モル比)は60:40〜30:
70であり、好ましくは50:50〜40:60であり、最
も好ましくは41:59である。このような重合体の
軟化点は80℃〜110℃である。ここでBMAにお
いてブチル基とはn−ブチル基を示す。
The copolymer used in the present invention is a copolymer of MMA and BMA (with a molecular weight of 9,000 to
60000, preferably 35000-50000),
The ratio (molar ratio) of MMA and BMA is 60:40~30:
70, preferably 50:50 to 40:60, most preferably 41:59. The softening point of such polymers is between 80°C and 110°C. Here, the butyl group in BMA refers to n-butyl group.

本発明においてMMA−BMA共重合体は、ラ
ベルと血液バツグ等の接着温度を下げる目的から
も可塑剤を加えて用いることが好ましく、MMA
−BMA共重合体と可塑剤の比率(重量)は85:
15〜70:30であり、好ましくは82:18〜75:25で
ある。可塑剤の比率(重量)が15未満であると接
着時の温度を充分に下げることができず、一方30
を越えると接着力が不充分であるという欠点を有
する。
In the present invention, it is preferable to use the MMA-BMA copolymer with the addition of a plasticizer for the purpose of lowering the adhesion temperature between the label and the blood bag.
-The ratio (weight) of BMA copolymer and plasticizer is 85:
The time is from 15:30 to 70:30, preferably from 82:18 to 75:25. If the plasticizer ratio (weight) is less than 15, the temperature during bonding cannot be lowered sufficiently;
If it exceeds 100%, there is a drawback that the adhesive strength is insufficient.

本発明の可塑剤としては、炭素数10〜33のアル
キルまたはシクロアルキルのフタル酸エステル類
または炭素数9〜22の脂肪酸エステル類があり、
例えばDCHP、DOP、DOAおよびDOSより成る
群から選ばれた少なくとも1種のものであり、取
扱いやすさの点から、特にジシクロヘキシルフタ
レート(DCHP)が最も好ましい。
The plasticizer of the present invention includes alkyl or cycloalkyl phthalate esters having 10 to 33 carbon atoms or fatty acid esters having 9 to 22 carbon atoms;
For example, it is at least one selected from the group consisting of DCHP, DOP, DOA, and DOS, and dicyclohexyl phthalate (DCHP) is particularly preferred from the viewpoint of ease of handling.

ラベルに塗布する接着剤の塗布量は、ラベルの
材質、重量、被接着材の材質等により変化するが
一般に単位面積当り15〜25g/m2(乾燥重量)で
あり、好ましくは21〜23g/m2である。塗布量が
15g/m2未満であると接着力が不足し、一方25
g/m2より越えても塗布量に比例した接着力は得
られない。
The amount of adhesive applied to the label varies depending on the label material, weight, material of the adhered material, etc., but is generally 15 to 25 g/m 2 (dry weight) per unit area, preferably 21 to 23 g/m 2 (dry weight). m2 . The amount of application
If it is less than 15g/ m2 , the adhesive strength will be insufficient;
Even if the coating amount exceeds g/m 2 , adhesive strength proportional to the coating amount cannot be obtained.

本発明の感熱性ラベルは次のようにして貼着す
る。ラベルの被接着部をヒーターにより、あらか
じめ加熱する。加熱温度は、一般にラベルの被接
着材の材質により変化するが、通常80〜100℃、
好ましくは90〜100℃である。この後、ラベルの
接着剤を塗布した面を予め加熱した被接着部に1
〜3Kg/cm2、好ましくは1〜2Kg/cm2の力で1〜
4秒間、好ましくは2〜3秒間圧接する。加熱お
よび加圧によりラベルの接着剤面が被接着材に接
着して、ラベルを貼着する。
The heat-sensitive label of the present invention is attached as follows. The part of the label to be adhered is heated in advance using a heater. The heating temperature generally varies depending on the material to which the label is adhered, but is usually 80 to 100℃,
Preferably it is 90-100°C. After this, place the adhesive-applied side of the label on the pre-heated area to be adhered.
~3Kg/ cm2 , preferably 1~2Kg/ cm2 force
Pressure is applied for 4 seconds, preferably 2 to 3 seconds. The adhesive side of the label adheres to the material to be adhered by applying heat and pressure, thereby pasting the label.

(実施例) 以下、本発明を実施例に基づきより詳細に説明
する。
(Examples) Hereinafter, the present invention will be explained in more detail based on Examples.

実施例 メチルメタクリレート41重量部(41モル%)、
ブチルメタクリレート84重量部(59モル%)およ
び重合開始剤である過酸化ラウロイル0.04重量部
を還流冷却器および攪拌器付きの4つ口1のセ
パラブルフラスコに投入し、接液部を窒素ガスで
置換し、かつ窒素ガスを流しながら50℃で2時間
で反応を終了させた。得られた低分子量物(粘度
10000cp温度25℃)にジシクロヘキシルフタレー
ト31重量部を加え、これを10cm×10cmのラベルの
片面上にはけで塗布した。これに6メガラドの電
子線を放射することで重合体構造を三次元化して
感熱性ラベルを得た。110℃で1夜乾燥後測定し
たところ、塗布量は22g/m2であつた。重合体の
分子量は、50000であつた。
Example 41 parts by weight (41 mol%) of methyl methacrylate,
84 parts by weight (59 mol%) of butyl methacrylate and 0.04 parts by weight of lauroyl peroxide, a polymerization initiator, were placed in a 4-neck separable flask equipped with a reflux condenser and a stirrer, and the wetted parts were heated with nitrogen gas. The reaction was completed in 2 hours at 50° C. while purging the atmosphere and flowing nitrogen gas. The obtained low molecular weight product (viscosity
31 parts by weight of dicyclohexyl phthalate was added to 10,000 cp (temperature: 25°C) and applied with a brush onto one side of a 10 cm x 10 cm label. By irradiating this with an electron beam of 6 megarads, the polymer structure was made three-dimensional and a heat-sensitive label was obtained. After drying at 110° C. overnight, the coating weight was measured to be 22 g/m 2 . The molecular weight of the polymer was 50,000.

エチレン−酢酸ビニル共重合体からなる血液バ
ツクの表面に前記の如く得られた感熱性ラベルの
接着面を当接し、14℃に加熱された熱盤をラベル
側より圧接(1.5Kg/m2×2秒間)して貼着した。
The adhesive surface of the heat-sensitive label obtained as described above was brought into contact with the surface of a blood bag made of ethylene-vinyl acetate copolymer, and a heating plate heated to 14°C was pressed from the label side (1.5Kg/m 2 × 2 seconds) and then stuck it.

冷却後、該ラベルを剥離しようとしたが容易に
剥れず、血液バツクが破れた。
After cooling, an attempt was made to peel off the label, but it could not be peeled off easily and the blood bag was torn.

比較のために、従来のアクリル系感圧接着剤を
使用する同サイズのラベルを前記血液バツグに室
温で圧接(1.5Kg/m2×2秒間)して貼着した。
このラベルは簡単に剥離し、再貼着できた。
For comparison, a label of the same size using a conventional acrylic pressure-sensitive adhesive was attached to the blood bag by pressure contact (1.5 kg/m 2 ×2 seconds) at room temperature.
This label was easily peeled off and reapplied.

(発明の効果) 本発明は、シート状基材の片面にメチルメタク
リレート−ブチルメタクリレート共重合体と可塑
剤から成る感熱性接着剤層を形成してなる感熱性
ラベルであるから、貼着後はラベルが被接着材か
ら剥離することがなくなり、無理に剥そうとする
と被接着材が破れるという程接着力が強固であ
る。このため、室温で剥離し、貼り替えられると
いう可能性がなくなつた。
(Effects of the Invention) The present invention is a heat-sensitive label in which a heat-sensitive adhesive layer made of methyl methacrylate-butyl methacrylate copolymer and a plasticizer is formed on one side of a sheet-like base material. The label will not peel off from the adhered material, and the adhesive strength is so strong that if you try to forcefully peel it off, the adhered material will tear. For this reason, there is no longer a possibility that it will peel off at room temperature and be replaced.

本発明は、血液バツク、輸液バツク等の医療容
器に適用し得るばかりでなく、熱可塑性材料にも
適用可能である。さらに、上記バツグの材質が軟
質塩ビ製の場合、ラベルの接着剤層に可塑剤が含
有されているのでラベル貼着後に、バツグから接
着剤層へ可塑剤の移行が生じにくく、バツグ強度
が維持できる。
The present invention is applicable not only to medical containers such as blood bags and infusion bags, but also to thermoplastic materials. Furthermore, when the material of the bag is made of soft PVC, the adhesive layer of the label contains a plasticizer, which prevents the plasticizer from migrating from the bag to the adhesive layer after the label is attached, and the strength of the bag is maintained. can.

また、本発明は、被接着材に損傷を与えない温
度で貼着が可能である。さらに、感熱温度が高い
ので、オートクレーブ減菌(例えば121℃)等を
行なつてもラベルが剥離する心配はない。
Further, according to the present invention, attachment can be performed at a temperature that does not damage the adhered material. Furthermore, since the heat-sensitive temperature is high, there is no fear that the label will peel off even when sterilized in an autoclave (for example, at 121°C).

Claims (1)

【特許請求の範囲】 1 シート状基材の片面にメチルメタクリレート
−ブチルメタクリレート共重合体と炭素数10〜33
のアルキルまたはシクロアルキルのフタル酸エス
テル類または炭素数9〜22の脂肪酸エステル類で
ある可塑剤を含有する感熱性接着剤層を形成した
ことを特徴とする感熱性ラベル。 2 基材が天然繊維紙、化学繊維紙、フイルム合
成紙およびフアイバー合成紙よりなる群から選ば
れたいずれかの1つである特許請求の範囲第1項
に記載の感熱性ラベル。 3 メチルメタクリレート−ブチルメタクリレー
トの比率(モル)が60:40〜30:70である特許請
求の範囲第1項または第2項に記載の感熱性ラベ
ル。 4 該共重合体と可塑剤の比率(重量)が85:15
〜70:30である特許請求の範囲第1〜3項のいず
れか1項に記載の感熱性ラベル。 5 可塑剤が、ジシクロヘキシルフタレート、ジ
オクチルフタレート、ジオクチルアジペイトおよ
びジオクチルセバケートよりなる群から選ばれた
少なくとも1種のものである特許請求の範囲第1
〜4項のいずれか1項に記載の感熱性ラベル。
[Scope of Claims] 1. A methyl methacrylate-butyl methacrylate copolymer and a carbon number of 10 to 33 on one side of a sheet-like base material.
1. A heat-sensitive label comprising a heat-sensitive adhesive layer containing a plasticizer which is an alkyl or cycloalkyl phthalate ester or a fatty acid ester having 9 to 22 carbon atoms. 2. The heat-sensitive label according to claim 1, wherein the base material is any one selected from the group consisting of natural fiber paper, chemical fiber paper, film synthetic paper, and fiber synthetic paper. 3. The heat-sensitive label according to claim 1 or 2, wherein the ratio (mole) of methyl methacrylate to butyl methacrylate is 60:40 to 30:70. 4 The ratio (weight) of the copolymer and plasticizer is 85:15
The heat-sensitive label according to any one of claims 1 to 3, wherein the ratio is 70:30. 5. Claim 1, wherein the plasticizer is at least one selected from the group consisting of dicyclohexyl phthalate, dioctyl phthalate, dioctyl adipate, and dioctyl sebacate.
The heat-sensitive label according to any one of items 1 to 4.
JP62211417A 1987-08-27 1987-08-27 Thermal label Granted JPS6456480A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62211417A JPS6456480A (en) 1987-08-27 1987-08-27 Thermal label

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62211417A JPS6456480A (en) 1987-08-27 1987-08-27 Thermal label

Publications (2)

Publication Number Publication Date
JPS6456480A JPS6456480A (en) 1989-03-03
JPH0518433B2 true JPH0518433B2 (en) 1993-03-11

Family

ID=16605610

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62211417A Granted JPS6456480A (en) 1987-08-27 1987-08-27 Thermal label

Country Status (1)

Country Link
JP (1) JPS6456480A (en)

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EP2348084A1 (en) 2009-12-25 2011-07-27 Yupo Corporation Thermosensitive adhesive label and labeled container with same
WO2013058273A1 (en) 2011-10-19 2013-04-25 株式会社ユポ・コーポレーション Water-activated sheet, water-activated label using said sheet, production method for said label, label adhering device using said label, and adherend for said label
US9777193B2 (en) 2009-12-25 2017-10-03 Yupo Corporation Thermosensitive adhesive label and labeled container with the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03109476A (en) * 1989-09-22 1991-05-09 Sekisui Chem Co Ltd Tacky agent and tacky sheet

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0083499B1 (en) * 1981-12-28 1986-04-09 Minnesota Mining And Manufacturing Company Hot-tackifying adhesive tape

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2348084A1 (en) 2009-12-25 2011-07-27 Yupo Corporation Thermosensitive adhesive label and labeled container with same
US9777193B2 (en) 2009-12-25 2017-10-03 Yupo Corporation Thermosensitive adhesive label and labeled container with the same
WO2013058273A1 (en) 2011-10-19 2013-04-25 株式会社ユポ・コーポレーション Water-activated sheet, water-activated label using said sheet, production method for said label, label adhering device using said label, and adherend for said label

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JPS6456480A (en) 1989-03-03

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