JP3224475B2 - Heat shrink label - Google Patents
Heat shrink labelInfo
- Publication number
- JP3224475B2 JP3224475B2 JP10243494A JP10243494A JP3224475B2 JP 3224475 B2 JP3224475 B2 JP 3224475B2 JP 10243494 A JP10243494 A JP 10243494A JP 10243494 A JP10243494 A JP 10243494A JP 3224475 B2 JP3224475 B2 JP 3224475B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- layer
- label
- shrinkable
- polyester
- 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
Links
- 239000010410 layer Substances 0.000 claims description 53
- 229920000728 polyester Polymers 0.000 claims description 26
- 230000003746 surface roughness Effects 0.000 claims description 19
- 229920006257 Heat-shrinkable film Polymers 0.000 claims description 17
- 239000002344 surface layer Substances 0.000 claims description 16
- 230000004927 fusion Effects 0.000 claims description 14
- 239000013078 crystal Substances 0.000 claims description 13
- 230000008602 contraction Effects 0.000 claims 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 20
- 239000002904 solvent Substances 0.000 description 16
- 238000007639 printing Methods 0.000 description 14
- 229920000139 polyethylene terephthalate Polymers 0.000 description 10
- 239000005020 polyethylene terephthalate Substances 0.000 description 10
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 8
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 4
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- -1 polyethylene terephthalate Polymers 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 235000011037 adipic acid Nutrition 0.000 description 2
- 239000001361 adipic acid Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000007646 gravure printing Methods 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 101000619542 Homo sapiens E3 ubiquitin-protein ligase parkin Proteins 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 102000045222 parkin Human genes 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば、瓶、缶、ポリ
エチレンテレフタレート製のボトル（以下ＰＥＴボトル
という）等の容器及び乾電池、文具雑貨等の物品に装着
される熱収縮ラベルの改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a heat-shrinkable label to be attached to articles such as bottles, cans, polyethylene terephthalate bottles (hereinafter referred to as PET bottles), dry batteries and stationery goods.
【０００２】[0002]
【従来の技術】一般に、加熱によって収縮する性質を有
する熱収縮フィルムを使用した熱収縮ラベル20は、図３
に示すように、熱収縮性を有する熱収縮フィルムの両端
部を接着して筒状に形成され、ＰＥＴボトル21やガラス
瓶、その他合成樹脂製等の種々の容器に使用されてい
る。2. Description of the Related Art Generally, a heat-shrinkable label 20 using a heat-shrinkable film having a property of shrinking by heating is shown in FIG.
As shown in FIG. 2, a heat-shrinkable heat-shrinkable film is formed into a tubular shape by bonding both ends thereof, and is used for a PET bottle 21, a glass bottle, and other various containers made of synthetic resin.
【０００３】このような熱収縮ラベル20に使用される熱
収縮フィルムとしては、ポリ塩化ビニル、ポリスチレ
ン、ポリエステル等からなる延伸フィルムが使用され
る。特に、ポリエチレンテレフタレート等のポリエステ
ルはその廃棄処理時に有害物質が発生せず衛生的で、ま
た常温での寸法安定性、耐侯性、外観等が優れているた
めにラベルの素材として注目されている。As a heat-shrinkable film used for such a heat-shrinkable label 20, a stretched film made of polyvinyl chloride, polystyrene, polyester or the like is used. In particular, polyester such as polyethylene terephthalate has attracted attention as a label material because it is sanitary without generating harmful substances at the time of disposal, and is excellent in dimensional stability at normal temperature, weather resistance, appearance and the like.
【０００４】また、上記のように熱収縮フィルムをＰＥ
Ｔボトル21やガラス瓶等に装着するために、両端部を重
ね合わせて有機溶剤により溶着して筒状に形成していた
が、この有機溶剤による溶着は、重ね合わせ部分におけ
るフィルムの収縮性及び接着の作業性に優れたものであ
った。[0004] Further, as described above, the heat-shrinkable film is made of PE.
In order to be mounted on a T-bottle 21 or a glass bottle, both ends are overlapped and welded with an organic solvent to form a tube. However, the welding with the organic solvent causes shrinkage and adhesion of the film at the overlapped portion. Was excellent in workability.
【０００５】[0005]
【発明が解決しようとする課題】しかし、ポリエチレン
テレフタレート等のポリエステルからなる延伸フィルム
は、耐溶剤性が強いため、比較的毒性の強い、塩化メチ
レン、クロロホルム等の塩素系の溶剤により溶着しなけ
ればならず作業環境の安全面に問題があった。However, since a stretched film made of polyester such as polyethylene terephthalate has strong solvent resistance, it must be welded with a relatively toxic chlorine-based solvent such as methylene chloride and chloroform. However, there was a problem with the safety of the working environment.
【０００６】また、比較的毒性の弱いケトン系やフラン
系等の溶剤で接着するために、ポリエステルの延伸倍率
を低くして溶剤接着性を向上させることも考えられた
が、フィルムに厚みムラが生じたり、熱収縮性が不足し
たりするという問題が生じ、またフィルムの生産性が悪
くなる等の問題があり満足できるものではなかった。さ
らに、ポリエステルの重合成分の改良も考えられたが、
コストが高くなり現実的ではなかった。In order to bond with a relatively toxic solvent such as ketone or furan, it has been considered to improve the solvent adhesion by lowering the stretch ratio of the polyester. This was not satisfactory because of problems such as occurrence of heat shrinkage and insufficient heat shrinkage, and deterioration of film productivity. Furthermore, improvement of the polymerization component of polyester was also considered,
The cost was high and it was not realistic.
【０００７】本発明は、このような問題点を解決するた
めになされたもので、通常使用される比較的毒性の少な
い溶剤による接着が可能で、しかも外観、装着状態共に
良好で、且つ良好に熱収縮することができる熱収縮ラベ
ルを提供することを課題とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and can be bonded with a solvent having relatively low toxicity, which is generally used, and has good appearance and mounting condition. It is an object to provide a heat shrinkable label that can be heat shrunk.
【０００８】本発明が、このような課題を解決するため
になされた手段としては、熱収縮フィルム5 からなるラ
ベル本体1 が筒状に形成されて物品5 に外嵌装着され、
且つ熱収縮される熱収縮ラベルにおいて、ラベル本体1
が、結晶融解熱(Hu)４乃至８cal/g のポリエステルから
なる中心層2 と該中心層2 の両面に設けられた結晶融解
熱(Hu)０乃至３cal/g のポリエステルからなる内面層3a
と外面層3bからなる熱収縮フィルム5 からなり、前記ラ
ベル本体(1) の最外面の表面の平均表面粗さ（Ｒa ) が
０．０４０乃至０．４００μｍであり、且つ最内面の表
面の平均表面粗さ（Ｒa ) が０．４５０乃至１．０００
μｍであることにある。The present invention has been made in order to solve the above-mentioned problems. As a means, a label main body 1 made of a heat-shrinkable film 5 is formed in a tubular shape, and is externally fitted to an article 5.
In a heat-shrinkable label that is heat-shrinkable, the label body 1
Is a central layer 2 made of polyester having a heat of crystal fusion (Hu) of 4 to 8 cal / g, and an inner surface layer 3a made of polyester having a heat of crystal fusion (Hu) of 0 to 3 cal / g provided on both sides of the central layer 2.
Consisting exterior layer 3b and the heat-shrinkable film 5 Tona is, the La
The average surface roughness (Ra) of the outermost surface of the bell body (1) is
0.040 to 0.400 μm, and the innermost surface
Average surface roughness (Ra) of the surface is 0.450 to 1.000
μm .
【０００９】また、前記ラベル本体1 の最外面の表面の
平均表面粗さ（Ｒa ) が０．０４０乃至０．４００μｍ
であり、且つ最内面の表面の平均表面粗さ（Ｒa ) が
０．４５０乃至１．０００μｍであることにある。The outermost surface of the label body 1 has an average surface roughness (R a ) of 0.040 to 0.400 μm.
And the average surface roughness (R a ) of the innermost surface is from 0.450 to 1.000 μm.
【００１０】さらに、前記ラベル本体1 の最外面の表面
のピーク数（Ｐc ) が０乃至３個／４ｍｍであり、且つ
最内面の表面のピーク数（Ｐc ) が５乃至５０個／４ｍ
ｍであることにある。Further, the number of peaks (P c ) on the outermost surface of the label body 1 is 0 to 3/4 mm, and the number of peaks (P c ) on the innermost surface is 5 to 50/4 m.
m.
【００１１】[0011]
【作用】すなわち、上記のように結晶融解熱(Hu)が４乃
至８ｃａｌ／ｇの範囲であるポリエステルからなる中心
層2 の両面に結晶融解熱(Hu)が０乃至３ｃａｌ／ｇの範
囲であるポリエステルの内面層3a及び外面層3bを設けた
３層構造からなる熱収縮フィルムを使用したため、内面
層3a及び外面層3bによって溶剤に対する溶解性がよい、
ポリエステルからなる熱収縮ラベルを形成することがで
きる。That is, the heat of crystal fusion (Hu) is in the range of 0 to 3 cal / g on both sides of the central layer 2 made of polyester having the heat of crystal fusion (Hu) in the range of 4 to 8 cal / g as described above. Since a heat-shrinkable film having a three-layer structure provided with an inner surface layer 3a and an outer surface layer 3b of polyester is used, the solubility in a solvent is good due to the inner surface layer 3a and the outer surface layer 3b.
A heat-shrinkable label made of polyester can be formed.
【００１２】また、中心層２の結晶融解熱(Hu)が上記範
囲であるため、溶剤に対する溶解性が高いにもかかわら
ず、ラベル本体1 の腰が強く容器への装着性の良好に形
成することができる。Further, since the heat of crystal fusion (Hu) of the central layer 2 is within the above range, the label body 1 is strong and has good mounting properties to the container despite its high solubility in solvents. be able to.
【００１３】さらに、ラベル本体1 の最外面側の平均表
面粗さ（Ｒa ) を０．０４０乃至０．４００μｍ、及び
ピーク数（Ｐc ) を０乃至３個／４ｍｍの範囲に形成し
た場合には、ラベル表面が傷つきにくく、外観を滑らか
に形成することができる。Furthermore, when the average surface roughness (R a ) on the outermost surface of the label body 1 is formed in the range of 0.040 to 0.400 μm and the number of peaks (P c ) is formed in the range of 0 to 3/4 mm. In this method, the label surface is hardly damaged, and the appearance can be formed smoothly.
【００１４】また、ラベル本体1 の最内面側の平均表面
粗さ（Ｒa ) を０．４５０乃至１．０００μｍ、及びピ
ーク数（Ｐc ) を５乃至５０個／４ｍｍの範囲に形成し
た場合には、容器への装着性が良好で、且つ容器からラ
ベルがずり落ちにくくすることができるのである。When the average surface roughness (R a ) of the innermost surface of the label body 1 is in the range of 0.450 to 1.000 μm, and the number of peaks (P c ) is in the range of 5 to 50/4 mm. Therefore, the label can be easily attached to the container and the label can be prevented from slipping off the container.
【００１５】[0015]
【実施例】以下、本発明の実施例について、図面に従っ
て説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１６】図１及び図２において示す、１はラベル本
体で、該ラベル本体１は、結晶融解熱(Hu)が４乃至８ｃ
ａｌ／ｇの範囲であるポリエステルからなる中心層２の
両面に結晶融解熱(Hu)が０乃至３ｃａｌ／ｇであるポリ
エステルからなる内面層3a及び外面層3bが設けられた３
層構造の熱収縮フィルム５の内面層3aの表面に印刷層４
を設けられ、図２に示すように、該ラベル本体１の両端
部1a,1b に溶剤９としてテトラヒドロフランが塗布さ
れ、ラベル本体１の内面層3aと外面層3bが溶着されて筒
状に形成されている。1 and 2, reference numeral 1 denotes a label body, and the label body 1 has a heat of crystal fusion (Hu) of 4 to 8c.
An inner layer 3a and an outer layer 3b made of polyester having a heat of crystal fusion (Hu) of 0 to 3 cal / g are provided on both sides of a central layer 2 made of polyester having a range of al / g.
The printed layer 4 is formed on the surface of the inner layer 3a of the heat-shrinkable film 5 having a layer structure.
As shown in FIG. 2, tetrahydrofuran is applied as a solvent 9 to both end portions 1a and 1b of the label main body 1, and the inner surface layer 3a and the outer surface layer 3b of the label main body 1 are welded and formed into a cylindrical shape. ing.
【００１７】前記中心層２のポリエステルフィルムとし
ては、例えばテレフタル酸８５モル％とイソフタル酸１
５モル％を酸成分とし、エチレングリコール１００モル
％をグリコール成分としたポリエステル（この場合の結
晶融解熱(Hu)約６．０ｃａｌ／ｇ）、または、テレフタ
ル酸８０モル％とアジピン酸２０モル％を酸成分とし、
エチレングリコール１００モル％をグリコール成分とし
たポリエステル（この場合の結晶融解熱(Hu)約６．８ｃ
ａｌ／ｇ）等が使用できる。As the polyester film of the center layer 2, for example, terephthalic acid 85 mol% and isophthalic acid 1
Polyester containing 5 mol% as an acid component and 100 mol% of ethylene glycol as a glycol component (in this case, heat of crystal fusion (Hu) of about 6.0 cal / g), or 80 mol% of terephthalic acid and 20 mol% of adipic acid Is an acid component,
Polyester containing 100 mol% of ethylene glycol as a glycol component (in this case, heat of crystal fusion (Hu) of about 6.8 c
al / g) can be used.
【００１８】また、内面層3a及び外面層3bのポリエステ
ルフィルムとしては、例えばテレフタル酸７０モル％と
アジピン酸３０モル％を酸成分とし、エチレングリコー
ル１００モル％をグリコール成分としたポリエステル
（この場合の結晶融解熱(Hu)は約２．１ｃａｌ／ｇ）、
または、テレフタル酸１００モル％を酸成分とし、エチ
レングリコール６５モル％、ネオペンチルグリコール３
３モル％及びジエチレングリコール６モル％をグリコー
ル成分としたポリエステル（この場合の結晶融解熱(Hu)
は０ｃａｌ／ｇ）等が使用できる。As the polyester film of the inner layer 3a and the outer layer 3b, for example, a polyester containing 70 mol% of terephthalic acid and 30 mol% of adipic acid as an acid component and 100 mol% of ethylene glycol as a glycol component (in this case, polyester) The heat of fusion (Hu) is about 2.1 cal / g),
Alternatively, 100 mol% of terephthalic acid is used as an acid component, and 65 mol% of ethylene glycol and neopentyl glycol 3
Polyester containing 3 mol% and 6 mol% of diethylene glycol as glycol components (the heat of crystal fusion (Hu) in this case)
Is 0 cal / g) or the like.
【００１９】この結晶融解熱(Hu)の測定は、パーキン・
エルマー社製ＤＳＣ−１Ｂを使用して行い、試料量２０
ｍｇ、昇温速度８°Ｃ／分で窒素シールを行い、一度融
点以上まで昇温し、常温まで降温した後、再度昇温した
時の融解ピークの面積から求めたものである。The heat of crystal fusion (Hu) was measured by the method of Parkin.
This was performed using Elmer DSC-1B, and the sample amount was 20
mg, a nitrogen seal was performed at a temperature rising rate of 8 ° C./min, the temperature was once raised to the melting point or higher, the temperature was lowered to room temperature, and then the temperature was raised again to obtain the melting peak area.
【００２０】次にこのような構成からなる熱収縮ラベル
８の製造方法について説明する。まず、前記３層構造の
熱収縮フィルム５の製造方法は、共押出方法によって各
層を形成する。Next, a method of manufacturing the heat-shrinkable label 8 having such a configuration will be described. First, in the method of manufacturing the heat-shrinkable film 5 having the three-layer structure, each layer is formed by a co-extrusion method.
【００２１】前記中心層２用のポリエステルと内面層3a
及び外面層3b用のポリエステルを別々の押出機に供給
し、２４０乃至２７０°Ｃで溶解押出し、Ｔ型口金内で
中心層２用のポリエステルの上下に内面層3a用と外面層
3b用のポリエステルが設けられるような３層になるよう
にし、これを口金から引き取り、３０°Ｃの冷却ロール
で冷却して３層構造の未延伸のフィルム５とする。The polyester for the central layer 2 and the inner surface layer 3a
The polyester for the outer layer 3b is supplied to a separate extruder and melt-extruded at 240 to 270 ° C., and the polyester for the inner layer 3a and the outer layer are placed above and below the polyester for the center layer 2 in a T-type die.
It is made into three layers in which polyester for 3b is provided, and it is taken out from the die and cooled by a cooling roll at 30 ° C. to obtain an unstretched film 5 having a three-layer structure.
【００２２】さらにこの未延伸のフィルム５を６５乃至
８０°Ｃに加熱しつつ幅方向に３．５乃至４．５倍延伸
し、次いで６５乃至８５°Ｃで熱処理し冷却後、ロール
状に巻き取る。Further, the unstretched film 5 is stretched 3.5 to 4.5 times in the width direction while being heated to 65 to 80 ° C., then heat-treated at 65 to 85 ° C., cooled, and wound into a roll. take.
【００２３】この時の内面層3a及び外面層3bの厚さは、
０．５乃至５μｍであることが望ましい。両層3a,3b の
厚みが０．５μｍより薄い場合には、溶剤による溶着性
が不安定となり、また５μｍより厚いと容器への装着性
が悪くなるためである。At this time, the thickness of the inner surface layer 3a and the outer surface layer 3b is
It is desirable that the thickness be 0.5 to 5 μm. If the thickness of both layers 3a and 3b is less than 0.5 μm, the weldability by the solvent becomes unstable, and if the thickness is more than 5 μm, the mountability to the container becomes poor.
【００２４】このようにして、３層構造の熱収縮フィル
ム５を形成するが、この熱収縮フィルム５の一面側の平
均表面粗さ（Ｒa ) （ＪＩＳ Ｂ ０６０１による）は
０．０４０乃至０．４００μｍ、且つピーク数（Ｐc )
が０乃至３個／４ｍｍになるように形成する。Thus, the heat-shrinkable film 5 having a three-layer structure is formed. The average surface roughness (R a ) on one side of the heat-shrinkable film 5 (according to JIS B0601) is 0.040 to 0. 400 μm and the number of peaks (P c )
Is 0 to 3/4 mm.
【００２５】さらに、熱収縮フィルム５の他面側にはグ
ラビア印刷等の公知の印刷方法によって印刷層４を形成
する。この印刷層４は、ラベルとして容器６に装着する
際に、容器６に接するようにラベル本体１の最内面に形
成する。Further, a printing layer 4 is formed on the other side of the heat-shrinkable film 5 by a known printing method such as gravure printing. The printed layer 4 is formed on the innermost surface of the label body 1 so as to be in contact with the container 6 when the label is mounted on the container 6.
【００２６】また、この印刷層４の平均表面粗さ
（Ｒa ) は０．４５０乃至１．０００μｍ、且つピーク
数（Ｐc ) が５乃至５０個／４ｍｍになるように形成す
る。The printed layer 4 is formed so that the average surface roughness (R a ) is 0.450 to 1.000 μm and the number of peaks (P c ) is 5 to 50/4 mm.
【００２７】前記ピーク数（Ｐc ) は上記平均表面粗さ
（Ｒa ) の表面粗さ曲線から求める。該表面粗さ曲線に
中心線（該中心線より上の面積と下の面積とが等しくな
るような線）を引き、この中心線の上下にさらに２本の
基準線を引き、該上下の基準線を越えたピークの数をピ
ーク数（Ｐc ) とする。The peak number (P c ) is determined from the surface roughness curve of the average surface roughness (R a ). A center line (a line where the area above the center line is equal to the area below the center line) is drawn on the surface roughness curve, and two more reference lines are drawn above and below the center line. The number of peaks beyond the line is defined as the number of peaks (P c ).
【００２８】このように、最外面に形成される外面層3b
の平均表面粗さ（Ｒa ) 及びピーク数（Ｐc ) が上記範
囲となるように形成したのは、この範囲より大きい値の
場合には、表面が荒くなり、ラベルの外観が悪くなり、
またこの範囲より小さい値の場合には、傷がつきやすい
という問題が生じるためである。As described above, the outer surface layer 3b formed on the outermost surface
Is formed so that the average surface roughness (R a ) and the number of peaks (P c ) fall within the above ranges. If the average surface roughness (R a ) and the number of peaks (P c ) are within the above ranges, the surface becomes rough and the appearance of the label deteriorates when the value is larger than this range.
Also, if the value is smaller than this range, there is a problem that the film is easily damaged.
【００２９】また、印刷層４の平均表面粗さ（Ｒa ) 及
びピーク数（Ｐc ) が上記範囲となるように形成したの
は、この範囲より大きい値の場合には、容器に対する装
着性が悪くなり、またこの範囲より小さい値の場合に
は、容器に装着した時にずり落ち等が発生し易いという
問題が生じるためである。The printing layer 4 is formed so that the average surface roughness (R a ) and the number of peaks (P c ) are within the above-mentioned ranges. If the value is smaller than this range, there is a problem that a slip-off or the like is apt to occur when mounted on a container.
【００３０】さらに、印刷層４の表面の平均表面粗さ
（Ｒa ) 及びピーク数（Ｐc ) を上記のような範囲にす
る手段としては、印刷インキ中にシリカ、酸化チタン等
の適当な微粒子を混合することによって上記範囲内にす
ることができる。Further, as means for controlling the average surface roughness (R a ) and the number of peaks (P c ) of the surface of the printing layer 4 to the above-mentioned ranges, an appropriate material such as silica or titanium oxide in the printing ink may be used. The above range can be achieved by mixing fine particles.
【００３１】この３層構造の熱収縮フィルム５の他面側
に印刷層４が形成されたラベル本体１の両端部1a,1b の
うちの一端部1aの表面に、溶剤としてテトラヒドロフラ
ンを塗布して他端部1bと重合し、溶着することによって
筒状に形成する。The surface of one end 1a of both ends 1a and 1b of the label body 1 having the printing layer 4 formed on the other surface of the heat shrinkable film 5 having the three-layer structure is coated with tetrahydrofuran as a solvent. It is formed into a cylindrical shape by polymerizing and welding to the other end 1b.
【００３２】次に、このようにして製造された熱収縮ラ
ベル８をＰＥＴボトル６に使用する場合について説明す
る。Next, the case where the heat-shrinkable label 8 manufactured as described above is used for the PET bottle 6 will be described.
【００３３】まず、図３に示すように、上記のように筒
状に形成された熱収縮ラベル８をＰＥＴボトル６に外嵌
装着した後（図３点線参照）、加熱して熱収縮ラベル８
を熱収縮させてＰＥＴボトル６に密着させる。First, as shown in FIG. 3, the heat-shrinkable label 8 formed in a cylindrical shape as described above is externally fitted to the PET bottle 6 (see a dotted line in FIG. 3), and then heated to heat the heat-shrinkable label 8.
Is heat-shrinked to adhere to the PET bottle 6.
【００３４】この時、熱収縮ラベル８の接着部分は溶剤
９により溶着されているため、熱収縮の際に、重合部分
も良好に収縮するため熱収縮ラベル８全体が均一に収縮
することができるのである。At this time, since the adhesive portion of the heat-shrinkable label 8 is welded by the solvent 9, the polymerized portion also shrinks favorably during the heat shrinkage, so that the entire heat-shrinkable label 8 can be uniformly shrunk. It is.
【００３５】尚、上記実施例では印刷層４をラベルの最
内面側の内面層3a表面に形成したが、印刷層４を設ける
位置はこれに限定されるものではなく外面層3b側に印刷
層４が設けられていてもよい。但し、印刷層４を設ける
位置に関係なく、内面層3a及び外面層3bの表面の平均表
面粗さ（Ｒa ) 及びピーク数（Ｐc ) は上記範囲内に形
成することが好ましい。In the above embodiment, the printing layer 4 is formed on the surface of the innermost layer 3a on the innermost side of the label. However, the position where the printing layer 4 is provided is not limited to this. 4 may be provided. However, it is preferable that the average surface roughness (R a ) and the number of peaks (P c ) of the surfaces of the inner surface layer 3a and the outer surface layer 3b are formed within the above ranges regardless of the position where the print layer 4 is provided.
【００３６】また、上記実施例では熱収縮ラベル８を装
着する容器としてＰＥＴボトル６を使用したが、この他
ガラス、合成樹脂等の容器に使用することもでき、その
容器は限定されるものではなく、さらに容器以外にも、
乾電池、文具雑貨等に使用することもでき、熱収縮ラベ
ルが装着される物品は上記実施例に限定されない。In the above embodiment, the PET bottle 6 is used as a container to which the heat shrink label 8 is attached. However, the PET bottle 6 can also be used for containers made of glass, synthetic resin, etc., and the container is not limited. No, and in addition to containers,
It can also be used for dry batteries, stationery goods, etc., and the article to which the heat shrink label is attached is not limited to the above embodiment.
【００３７】さらに、上記実施例では、３層構造からな
る熱収縮フィルム１を共押出方法によって形成したが、
フィルムの製造方法はこれに限定されるものではなく、
夫々別個に作成された各層のフィルムを貼り合わせるド
ライラミネート方法等の公知の技術で製造することがで
きる。Further, in the above embodiment, the heat-shrinkable film 1 having a three-layer structure was formed by the co-extrusion method.
The production method of the film is not limited to this,
It can be manufactured by a known technique such as a dry laminating method of laminating the films of the respective layers separately prepared.
【００３８】また、上記実施例では、溶剤９としてテト
ラヒドロフランを使用したが、ラベル本体１を溶着する
ために使用する溶剤９としてはこの他のフラン系、ケト
ン系、エステル系、芳香族炭化水素系等の有機溶剤を適
宜使用することができる。Further, in the above embodiment, tetrahydrofuran was used as the solvent 9, but other solvents such as furan, ketone, ester, and aromatic hydrocarbon may be used for welding the label body 1. And other organic solvents can be used as appropriate.
【００３９】さらに、上記実施例では印刷層４を形成す
るためにグラビア印刷によって印刷を施すこととした
が、この他公知の印刷方法によって印刷層４を形成する
こともでき、その印刷方法は限定されるものではない。Further, in the above embodiment, printing is performed by gravure printing to form the printing layer 4, but the printing layer 4 can be formed by other known printing methods, and the printing method is limited. It is not something to be done.
【００４０】[0040]
【発明の効果】叙上のように、本発明の熱収縮ラベル
は、溶剤に対する溶解性の高い表面層を有する３層構造
のポリエステルからなる熱収縮フィルムを使用したた
め、外観が優れ、またその廃棄時に有害ガス等が発生せ
ず、且つ安全な溶剤によって溶着することができるポリ
エステル製の熱収縮ラベルを得ることができる。As described above, the heat-shrinkable label of the present invention uses a heat-shrinkable film made of a polyester having a three-layer structure having a surface layer having high solubility in a solvent, so that the appearance is excellent, and the heat-shrinkable label is discarded. A heat-shrinkable label made of polyester can be obtained which does not sometimes generate harmful gas and can be welded with a safe solvent.
【００４１】また、前記のように溶剤に対する溶着性の
高い表面層を有するため、十分に延伸処理を行うことが
でき、従って収縮性の良好なポリエステル製熱収縮ラベ
ルに形成することができるという効果もある。Further, as described above, since the surface layer has a high adhesiveness to a solvent, it can be sufficiently stretched, and can be formed into a heat-shrinkable polyester-made label having good shrinkage. There is also.
【００４２】さらに、平均表面粗さ（Ｒa ) 及びピーク
数（Ｐc ) を上記範囲になるように形成したため、容器
への装着性、及び表面外観の優れた熱収縮ラベルを得る
ことができるという効果を得ることができる。Further, since the average surface roughness (R a ) and the number of peaks (P c ) are formed within the above ranges, a heat-shrinkable label having excellent mountability to a container and excellent surface appearance can be obtained. The effect described above can be obtained.
【００４３】また、内面層及び外面層の厚みを０．５乃
至５μｍの範囲にした場合には、より確実に接着するこ
とができ、且つ容器への装着性のよいラベルを形成する
ことができるという効果も得られる。When the thickness of the inner layer and the outer layer is in the range of 0.5 to 5 μm, it is possible to form a label that can be more securely adhered and that can be easily attached to a container. The effect is also obtained.
【図１】本発明に係る熱収縮ラベルの一実施例を示す断
面図。FIG. 1 is a sectional view showing one embodiment of a heat shrinkable label according to the present invention.
【図２】同、ラベル本体を筒状にする前の断面図。FIG. 2 is a sectional view of the same before the label main body is formed into a tubular shape.
【図３】本発明、及び従来の熱収縮ラベルを装着したＰ
ＥＴボトルを示す斜視図。FIG. 3 shows a P with a heat-shrinkable label according to the present invention and a conventional heat-shrinkable label.
FIG. 2 is a perspective view showing an ET bottle.
１ ラベル本体 ２ 中心層 3a 内面層 3b 外面層 ４ 印刷層 1 label body 2 center layer 3a inner layer 3b outer layer 4 printing layer
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平４−278348（ＪＰ，Ａ) 特開 平５−117413（ＪＰ，Ａ) 特開 平６−79778（ＪＰ，Ａ) 特開 昭62−86388（ＪＰ，Ａ) 特開 平５−204312（ＪＰ，Ａ) 特開 昭63−27535（ＪＰ，Ａ) 特開 平５−131599（ＪＰ，Ａ) 特開 昭49−29377（ＪＰ，Ａ) 特開 平４−18347（ＪＰ，Ａ) 実開 昭48−99097（ＪＰ，Ｕ) 実開 平２−34441（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) G09F 3/00 - 3/20 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-278348 (JP, A) JP-A-5-117413 (JP, A) JP-A-6-79778 (JP, A) JP-A-62-178 86388 (JP, A) JP-A-5-204312 (JP, A) JP-A-63-27535 (JP, A) JP-A 5-131599 (JP, A) JP-A-49-29377 (JP, A) JP-A-4-18347 (JP, A) JP-A-48-99097 (JP, U) JP-A-2-34441 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) G09F 3/00-3/20
Claims (3)
(1) が筒状に形成されて物品(6) に外嵌装着され、且つ
熱収縮される熱収縮ラベルにおいて、ラベル本体(1)
が、結晶融解熱(Hu)４乃至８cal/g のポリエステルから
なる中心層(2) と該中心層(2) の両面に設けられた結晶
融解熱(Hu)０乃至３cal/g のポリエステルからなる内面
層(3a)と外面層(3b)からなる熱収縮フィルム(5) からな
り、前記ラベル本体(1) の最外面の表面の平均表面粗さ
（Ｒa ) が０．０４０乃至０．４００μｍであり、且つ
最内面の表面の平均表面粗さ（Ｒa ) が０．４５０乃至
１．０００μｍであることを特徴とする熱収縮ラベル。1. A label body comprising a heat-shrinkable film (5).
(1) is formed into a tubular shape, is externally fitted to the article (6), and is heat-shrinkable.
Is composed of a central layer (2) made of polyester having a heat of crystal fusion (Hu) of 4 to 8 cal / g and a polyester having a heat of crystal fusion (Hu) of 0 to 3 cal / g provided on both sides of the central layer (2). It consists of a heat-shrinkable film (5) consisting of an inner layer (3a) and an outer layer (3b).
The average surface roughness of the outermost surface of the label body (1).
(Ra) is 0.040 to 0.400 μm, and
The average surface roughness (Ra) of the innermost surface is from 0.450 to
Heat-shrinkable label characterized by 1.000μm der Rukoto.
ーク数（Ｐc ) が０乃至３個／４ｍｍであり、且つ最内
面の表面のピーク数（Ｐc ) が５乃至５０個／４ｍｍで
ある請求項１に記載の熱収縮ラベル。2. The number of peaks (Pc) on the outermost surface of the label body (1) is 0 to 3/4 mm, and the number of peaks (Pc) on the innermost surface is 5 to 50/4 mm. The heat-shrinkable label according to claim 1 , wherein
０．５乃至５μｍの範囲にある請求項１又は２に記載の
熱収縮ラベル。Wherein the inner surface layer (3a) and thermal contraction label according to claim 1 or 2 the thickness of the exterior layer (3b) is in the range of 0.5 to 5 [mu] m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10243494A JP3224475B2 (en) | 1994-05-17 | 1994-05-17 | Heat shrink label |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10243494A JP3224475B2 (en) | 1994-05-17 | 1994-05-17 | Heat shrink label |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001046821A Division JP2001272915A (en) | 2001-02-22 | 2001-02-22 | Heat shrinkable label |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07311547A JPH07311547A (en) | 1995-11-28 |
| JP3224475B2 true JP3224475B2 (en) | 2001-10-29 |
Family
ID=14327369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10243494A Expired - Fee Related JP3224475B2 (en) | 1994-05-17 | 1994-05-17 | Heat shrink label |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3224475B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4593759B2 (en) * | 1999-11-16 | 2010-12-08 | 株式会社フジシールインターナショナル | Labeled container |
| JP6359905B2 (en) * | 2014-07-18 | 2018-07-18 | 株式会社フジシール | Labeled container |
-
1994
- 1994-05-17 JP JP10243494A patent/JP3224475B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07311547A (en) | 1995-11-28 |
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