JP5302725B2 - Adhesive tape - Google Patents
Adhesive tape Download PDFInfo
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- JP5302725B2 JP5302725B2 JP2009065513A JP2009065513A JP5302725B2 JP 5302725 B2 JP5302725 B2 JP 5302725B2 JP 2009065513 A JP2009065513 A JP 2009065513A JP 2009065513 A JP2009065513 A JP 2009065513A JP 5302725 B2 JP5302725 B2 JP 5302725B2
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- adhesive tape
- density polyethylene
- layer
- adhesive
- aluminum foil
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- 239000002390 adhesive tape Substances 0.000 title claims description 38
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 31
- 229910052782 aluminium Inorganic materials 0.000 claims description 31
- 239000011888 foil Substances 0.000 claims description 31
- 239000010410 layer Substances 0.000 claims description 30
- 229920001903 high density polyethylene Polymers 0.000 claims description 24
- 239000004700 high-density polyethylene Substances 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 24
- 229920001684 low density polyethylene Polymers 0.000 claims description 19
- 239000004702 low-density polyethylene Substances 0.000 claims description 19
- 239000012790 adhesive layer Substances 0.000 claims description 15
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 16
- 239000000853 adhesive Substances 0.000 description 13
- 230000001070 adhesive effect Effects 0.000 description 13
- 239000000758 substrate Substances 0.000 description 10
- -1 polyethylene Polymers 0.000 description 9
- 229920000573 polyethylene Polymers 0.000 description 9
- 239000004698 Polyethylene Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000003475 lamination Methods 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 6
- 230000032798 delamination Effects 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 6
- 230000005484 gravity Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 5
- 239000011810 insulating material Substances 0.000 description 5
- 238000010030 laminating Methods 0.000 description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 4
- 239000011342 resin composition Substances 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 229920000092 linear low density polyethylene Polymers 0.000 description 3
- 239000004707 linear low-density polyethylene Substances 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 239000000123 paper Substances 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 229920003355 Novatec® Polymers 0.000 description 1
- 229920002873 Polyethylenimine Polymers 0.000 description 1
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- RLAWWYSOJDYHDC-BZSNNMDCSA-N lisinopril Chemical compound C([C@H](N[C@@H](CCCCN)C(=O)N1[C@@H](CCC1)C(O)=O)C(O)=O)CC1=CC=CC=C1 RLAWWYSOJDYHDC-BZSNNMDCSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
Description
本発明は、アルミ箔と横一軸延伸フィルムの積層体を基材に用いた粘着テープに関する。さらに詳しくは、例えば、ダクトホース等の配管に断熱材を巻きつけた際、断熱材を固定、被覆するために使用される粘着テープで、アルミ箔と横方向に手切れ性のあるフィルムをラミネートした基材を使用した粘着テープに関する。 The present invention relates to an adhesive tape using a laminate of an aluminum foil and a laterally uniaxially stretched film as a substrate. More specifically, for example, when a heat insulating material is wrapped around a pipe such as a duct hose, it is an adhesive tape that is used to fix and coat the heat insulating material. The present invention relates to an adhesive tape using the prepared base material.
ビル、船舶、車等においては、天井裏や壁内に吸気用や排気用のダクトホースが取り付けられている。このダクトホース等の配管回りに巻いた断熱材を固定、被覆する粘着テープとして、テープ基材としてクラフト紙の上面にアルミ箔を貼り合わせたアルミ箔紙を使用した粘着テープ（例えば、特許文献１）、又、アルミ箔と横一軸延伸フィルムをテープ基材とした粘着テープ（例えば、特許文献２）が知られている。
しかしながら、アルミ箔紙を使用した粘着テープは手で切断することは可能であるが、まっすぐ切断することができずに斜めに切れてしまう問題がある場合があった。又、アルミ箔と横一軸延伸フィルムをテープ基材とした粘着テープは、軍手をはめた手でも、まっすぐにかつ片手でも切断できるので都合が良いが、該粘着テープは、基材を手で引き出して切断した際、基材ねじれが発生する場合があり、作業において問題となる場合があった。 However, although an adhesive tape using aluminum foil paper can be cut by hand, there may be a problem that the tape cannot be cut straight and cut obliquely. In addition, an adhesive tape using aluminum foil and a laterally uniaxially stretched film as a tape base material is convenient because it can be cut with either a hand with a gloves or straight and with one hand. In some cases, the substrate may be twisted when it is cut, which may cause a problem in the work.
本発明は、テープを引き出した際ねじれが発生せずかつ、手切れ性（テープのカットの容易性）のよい粘着テープを提供することを目的とする。 An object of the present invention is to provide a pressure-sensitive adhesive tape that does not twist when the tape is pulled out and has good hand cutting properties (ease of tape cutting).
本発明の粘着テープは、基材層と、基材層の下に粘着剤層を有する粘着テープであって、基材層が上層から順に、アルミ箔、接着層の低密度ポリエチレン、接着層の高密度ポリエチレン、横一軸延伸フィルムであり、かつ前記低密度ポリエチレン層が５〜２０μｍであり、高密度ポリエチレン層が１０〜４０μｍである粘着テープである。 The pressure-sensitive adhesive tape of the present invention is a pressure-sensitive adhesive tape having a base material layer and a pressure-sensitive adhesive layer under the base material layer, and the base material layer is composed of an aluminum foil, a low-density polyethylene of an adhesive layer, an adhesive layer in order from the upper layer. The pressure-sensitive adhesive tape is a high-density polyethylene, a transversely uniaxially stretched film, the low-density polyethylene layer is 5 to 20 μm, and the high-density polyethylene layer is 10 to 40 μm .
本発明により、テープを引き出した際ねじれが発生せずかつ、手切れ性のよい粘着テープを得ることができる。 According to the present invention, it is possible to obtain a pressure-sensitive adhesive tape that does not twist when the tape is pulled out and has good hand cutting properties.
本発明の粘着テープは、アルミ箔に貼合するフィルムに横一軸延伸フィルムを選ぶことによって、横一軸延伸フィルムに付与された方向性によって無方向性のアルミ箔に方向性を与えこれに直線的に引き裂けるようにすると共に、積層の際使用する接着層に密度の違う２種類のポリエチレンを使用することで、テープを引き出した際ねじれの発生が防止できる。 The pressure-sensitive adhesive tape of the present invention gives a directivity to a non-directional aluminum foil according to the directionality given to the lateral uniaxially stretched film by selecting a laterally uniaxially stretched film as the film to be bonded to the aluminum foil, and linear By using two types of polyethylene having different densities for the adhesive layer used for lamination, the occurrence of twisting can be prevented when the tape is pulled out.
本発明において、横一軸延伸フィルムは、高密度ポリエチレンを主成分とする樹脂組成物からなる。樹脂組成物は、高密度ポリエチレン（以下、「ＨＤＰＥ」と略称する。）単独、又は、ＨＤＰＥと直鎖状低密度ポリエチレン（以下、「ＬＬＤＰＥ」と略称する。）、及び、低密度ポリエチレン（以下、「ＬＤＰＥ」と略称する。）の少なくとも一方との混合物をいう。ＨＤＰＥを主成分とする樹脂組成物の密度は、０．９５ｇ／ｃｍ３以上であり、好ましくは０．９５５ｇ／ｃｍ３以上である。密度の上限については特に限定はないが、好ましくは０．９７ｇ／ｃｍ３未満である。ＨＤＰＥを主成分とする樹脂組成物の密度が０．９５ｇ／ｃｍ３未満であると、延伸してフィルムにしても十分な引き裂き強度が得られない場合がある。 In the present invention, the laterally uniaxially stretched film is made of a resin composition containing high-density polyethylene as a main component. The resin composition includes high-density polyethylene (hereinafter abbreviated as “HDPE”) alone, HDPE and linear low-density polyethylene (hereinafter abbreviated as “LLDPE”), and low-density polyethylene (hereinafter abbreviated as “LDPE”). , Abbreviated as “LDPE”). Density of the resin composition based on HDPE is a 0.95 g / cm 3 or more, preferably 0.955 g / cm 3 or more. The upper limit of the density is not particularly limited, but is preferably less than 0.97 g / cm 3 . If the density of the resin composition containing HDPE as a main component is less than 0.95 g / cm 3 , sufficient tear strength may not be obtained even if the film is stretched.
本発明に使用できる横一軸延伸フィルムのＨＤＰＥは、密度が０．９３〜０．９７ｇ／ｃｍ３の範囲でメルトフローレートが、ＪＩＳＫ６９２２−２に規定される温度１９０℃、荷重２．１６ｋｇの測定条件下において、好ましくは０．０１〜５．０ｇ／１０分を有するものである。 The HDPE of a laterally uniaxially stretched film that can be used in the present invention has a density in the range of 0.93 to 0.97 g / cm 3 and a melt flow rate of 190 ° C. and a load of 2.16 kg as defined in JISK6922-2. Under the conditions, it preferably has 0.01 to 5.0 g / 10 min.
本発明に使用できる横一軸延伸フィルムのＬＬＤＰＥは、エチレンとブテンー１、ヘキセンー１、オクテンー１等との共重合体であり、密度が０．９１〜０．９５ｇ／ｃｍ３の範囲でメルトフローレートが、ＪＩＳＫ６９２２−２に規定される温度１９０℃、荷重２．１６ｋｇの測定条件下において、好ましくは０．０１〜５．０ｇ／１０分を有するものである。 The LLDPE of a transversely uniaxially stretched film that can be used in the present invention is a copolymer of ethylene and butene-1, hexene-1, octene-1, etc., and has a melt flow rate in the range of 0.91 to 0.95 g / cm 3. However, it preferably has 0.01 to 5.0 g / 10 min under the measurement conditions of a temperature of 190 ° C. and a load of 2.16 kg as defined in JIS K6922-2.
本発明に使用できる横一軸延伸フィルムのＬＤＰＥは、密度が０．９０〜０．９３ｇ／ｃｍ３の範囲でメルトフローレートが、ＪＩＳＫ６９２２−２に規定される温度１９０℃、荷重２．１６ｋｇの測定条件下において、好ましくは０．０１〜１０．０ｇ／分を有するものである。 The LDPE of a laterally uniaxially stretched film that can be used in the present invention has a density in the range of 0.90 to 0.93 g / cm 3 and a melt flow rate of 190 ° C. and a load of 2.16 kg as defined in JISK6922-2. Under the conditions, it preferably has 0.01 to 10.0 g / min.
横一軸延伸フィルム１１の延伸倍率は、８〜１６倍の範囲である。延伸倍率が８倍未満では充分な分子配向が得られず、延伸方向に直線的に引き裂けなくなる。一方、１６倍を超えると延伸途中で延伸切れが発生したりするため、延伸が困難になる。また、延伸されたフィルムの厚さは、好ましくは１５〜５０μｍである。厚さが、１５μｍ未満だと、フィルムとして必要な強度が低下して、粘着テープの基材としては不向きとなる場合がある。一方、厚さが、５０μｍを超えると得られた粘着テープの手切れ性が悪くなる場合がある。 The draw ratio of the lateral uniaxially stretched film 11 is in the range of 8 to 16 times. If the draw ratio is less than 8, sufficient molecular orientation cannot be obtained, and the film cannot be linearly torn in the drawing direction. On the other hand, if it exceeds 16 times, stretching may occur in the middle of stretching, making stretching difficult. Moreover, the thickness of the stretched film is preferably 15 to 50 μm. If the thickness is less than 15 μm, the strength required for the film may be reduced, making it unsuitable as a base material for the adhesive tape. On the other hand, when the thickness exceeds 50 μm, the hand-cut property of the obtained adhesive tape may be deteriorated.
アルミ箔は、どのような物でも用いることができるが、アルミ箔のピンホールや強度、製造時のアルミ箔の取扱性、粘着テープでの取扱性などを考慮すると、それ自体の強度並びに引裂時における易引裂性と延伸された横一軸延伸フィルムの影響力を損なわないよう、厚みを６〜１５μｍ、好ましくは７〜１２μｍのものが使用される。アルミ箔の厚みが１５μｍを超えると、基材層が硬くなったり、得られた粘着テープの手切れ性が悪くなったりする場合がある。一方、アルミ箔の厚みが６μｍ未満だと、アルミ箔と横一軸延伸フィルムの押出ラミネート時にアルミ箔にシワが入る場合がある。 Any aluminum foil can be used, but considering the pinhole and strength of the aluminum foil, the handleability of the aluminum foil at the time of manufacture, the handleability of the adhesive tape, etc., its own strength and at the time of tearing In order not to impair the easy tearability and the influence of the stretched lateral uniaxially stretched film, those having a thickness of 6 to 15 μm, preferably 7 to 12 μm are used. When the thickness of the aluminum foil exceeds 15 μm, the base material layer may become hard or the hand-cut property of the obtained adhesive tape may be deteriorated. On the other hand, if the thickness of the aluminum foil is less than 6 μm, the aluminum foil may be wrinkled during extrusion lamination of the aluminum foil and the lateral uniaxially stretched film.
横一軸延伸フィルムとアルミ箔を積層する方法としては、押出ラミネート法が好適であり、接着層としてはポリエチレンを使用する。 As a method of laminating the laterally uniaxially stretched film and the aluminum foil, an extrusion laminating method is suitable, and polyethylene is used as the adhesive layer.
接着層のポリエチレン厚みとしては１５μｍ〜６０μｍ、好ましくは２０〜３５μｍにする。これより薄いと前記の理由から強度が低下し、テープ基材として好ましくない。また、この範囲より大きいと基材の伸びが大きくなり、テープの手切れ性が悪くなる場合がある。 The polyethylene thickness of the adhesive layer is 15 μm to 60 μm, preferably 20 to 35 μm. If it is thinner than this, the strength is lowered for the reasons described above, which is not preferable as a tape substrate. On the other hand, if it is larger than this range, the elongation of the substrate is increased, and the hand cutting property of the tape may be deteriorated.
一般的に横一軸延伸フィルムとアルミ箔を押出ラミネート法で積層した基材の一面に粘着剤を塗工しテープ化したものは、テープを引き出した際、基材にねじれが発生する。 In general, when a tape is formed by applying an adhesive to one surface of a base material obtained by laminating a laterally uniaxially stretched film and an aluminum foil by extrusion lamination, the base material is twisted when the tape is pulled out.
これを防ぐためには、接着層に密度の高いポリエチレンで押出ラミネートにより積層すればよい。具体的には密度が０．９２６ｇ／ｃｍ３〜０．９７ｇ／ｃｍ３、好ましくは０．９３０ｇ／ｃｍ３〜０．９６ｇ／ｃｍ３の範囲である。 In order to prevent this, the adhesive layer may be laminated by extrusion lamination with high-density polyethylene. Specifically, the density is in the range of 0.926 g / cm 3 to 0.97 g / cm 3 , preferably 0.930 g / cm 3 to 0.96 g / cm 3 .
前記のような接着層に密度の高いポリエチレンで押出ラミネートにより積層することで、テープ化した時でもねじれが発生しないテープが得られる。 By laminating the above adhesive layer with high-density polyethylene by extrusion lamination, a tape that does not twist even when taped is obtained.
しかしながら、押出ラミネートにおいて接着層に使用するポリエチレンの密度が高くなると接着強度が低下する傾向にある。特にアルミ箔とポリエチレンは接着し難いため、この部分の接着強度が低いと、テープとして使用中にアルミ箔とポリエチレン層のデラミネーションが発生して使用不能となる。 However, when the density of polyethylene used for the adhesive layer in extrusion lamination increases, the adhesive strength tends to decrease. In particular, since aluminum foil and polyethylene are difficult to bond, if the adhesive strength of this portion is low, delamination of the aluminum foil and the polyethylene layer occurs during use as a tape, making it unusable.
これを防ぐためには接着層に密度の低いポリエチレンを使用してラミネートすればよい。具体的には密度が０．９００ｇ／ｃｍ３〜０．９２５ｇ／ｃｍ３、好ましくは０．９１０ｇ／ｃｍ３〜０．９２２ｇ／ｃｍ３の範囲である。しかしながら、この方法では本願明細書段落００１６のようにねじれが発生してしまうために好ましくない。 In order to prevent this, the adhesive layer may be laminated using low density polyethylene. Specifically density 0.900g / cm 3 ~0.925g / cm 3 , preferably in the range of 0.910g / cm 3 ~0.922g / cm 3 . However, this method is not preferable because twisting occurs as in paragraph 0016 of the present specification.
これを防ぐために、横一軸延伸フィルム側に接着層として密度の高いポリエチレンを積層し、その上に接着層として密度の低いポリエチレンを積層してアルミ箔をラミネートするのである。また、層の厚さは密度の高いポリエチレン層よりも密度の低いポリエチレン層を薄くする。 In order to prevent this, high density polyethylene is laminated as an adhesive layer on the laterally uniaxially stretched film side, and low density polyethylene is laminated thereon as an adhesive layer, and aluminum foil is laminated. Moreover, the thickness of a layer makes a polyethylene layer with a low density thinner than a polyethylene layer with a high density.
このように積層された基材は、粘着剤を塗工した際においても、基材ねじれが発生せず、アルミ箔のデラミネーションも発生しない基材を得ることができる。 Thus, the base material laminated | stacked in this way can obtain the base material which does not generate | occur | produce a twist of a base material and does not generate | occur | produce the delamination of an aluminum foil, when an adhesive is applied.
接着層は密度の高いポリエチレン層は１０〜４０μｍ、密度の低いポリエチレン層は５〜２０μｍとし、合計では本願明細書段落００１５のように１５μｍ〜６０μｍ、好ましくは２０〜３５μｍにする。 The adhesive layer has a high density polyethylene layer of 10 to 40 μm and a low density polyethylene layer of 5 to 20 μm, and the total is 15 μm to 60 μm, preferably 20 to 35 μm, as in paragraph 0015 of the present specification.
基材のアルミ箔側には剥離剤を塗布するのが好ましい。剥離剤としては、従来一般的に使用されている長鎖アルキル系剥離剤を用いる。具体的には、例えば、商品名ピーロイル１０１０（一方社油脂工業社製）を、例えばトルエン等の有機溶剤に溶解して０．０５〜０．６ｇ／ｍ２の量になるように塗布乾燥されるが、これに限定されるものではない。 It is preferable to apply a release agent to the aluminum foil side of the substrate. As the release agent, a long-chain alkyl release agent generally used conventionally is used. Specifically, for example, the product name Pyroyl 1010 (manufactured by Yushi Kogyo Co., Ltd.) is dissolved in an organic solvent such as toluene and applied and dried to an amount of 0.05 to 0.6 g / m 2. However, the present invention is not limited to this.
基材の横一軸延伸フィルム側には粘着剤を塗布する。粘着剤としては、特に限定されないが、例えばエラストマー成分として天然ゴム系粘着剤、合成ゴム系粘着剤が使用され、粘着付与剤樹脂、必要に応じて軟化剤、老化防止剤、更に架橋剤、顔料等の添加剤が配合される。粘着剤は１０〜６０μｍ厚みで塗布されるのが好ましい。 An adhesive is applied to the lateral uniaxially stretched film side of the substrate. The pressure-sensitive adhesive is not particularly limited. For example, a natural rubber-based pressure-sensitive adhesive or a synthetic rubber-based pressure-sensitive adhesive is used as an elastomer component. A tackifier resin, a softener, an anti-aging agent, a cross-linking agent, and a pigment as necessary. Etc. are blended. The pressure-sensitive adhesive is preferably applied with a thickness of 10 to 60 μm.
以下に、実施例を挙げて本発明を具体的に説明するが、本発明はこれらの実施例により限定されるものではない。図１は、各実施例および比較例の粘着テープを模式的に示した縦断面図である。 EXAMPLES Hereinafter, the present invention will be specifically described with reference to examples, but the present invention is not limited to these examples. FIG. 1 is a longitudinal sectional view schematically showing an adhesive tape of each example and comparative example.
表１において、「基材強度」とは、粘着テープを引き出し作業中の、粘着テープの状態を目視で判定し、次の評価基準
優良：引き出し作業中に粘着テープの切れが発生しなかったもの
良 ：引き出し作業中に粘着テープの切れが僅かに発生したもの
不良：引き出し作業中に粘着テープの切れが発生したもの
で評価した。
In Table 1, “base strength” means that the state of the adhesive tape is visually determined during the pulling out of the adhesive tape, and the following evaluation criteria are excellent: the adhesive tape is not broken during the pulling out operation. Good: The adhesive tape was slightly cut during the pulling operation. Defect: The adhesive tape was cut during the pulling operation.
表１において、「手切れ性」とは、作業用手袋、例えば、軍手を両手にはめて、どちらか片方の手で粘着テープを保持して、もう片方の手で粘着テープを約７０ｃｍ程度引き出し、粘着テープを保持したほうの手で基材を切断する。例えば、左手で粘着テープを保持し、右手で粘着テープを約７０ｃｍの長さまで引き出し、左手で基材を切断する。このようにしたとき、粘着テープの切断面の切り口の状態を目視で判定し、次の評価基準
良 ：粘着テープが指先のひねりで切れたもの
不良：粘着テープの切断が困難であったもの
で評価した。
In Table 1, “hand tearability” refers to work gloves such as work gloves, holding an adhesive tape with one hand, and pulling out the adhesive tape approximately 70 cm with the other hand. The base material is cut with the hand holding the adhesive tape. For example, the adhesive tape is held with the left hand, the adhesive tape is pulled out to a length of about 70 cm with the right hand, and the substrate is cut with the left hand. When this is done, the condition of the cut surface of the adhesive tape is visually determined, and the following evaluation criteria are good: The adhesive tape is cut by the twist of the fingertip. Bad: The adhesive tape is difficult to cut. evaluated.
表１において、「基材ねじれ」とは、前記、本願明細書段落００３１の方法でテープ基材を切断した時、基材がねじれたかどうかを次の評価基準
良 ：基材ねじれが発生しなかったもの
不良：基材ねじれが発生したもの
で評価した。
In Table 1, “substrate twist” means whether or not the substrate was twisted when the tape substrate was cut by the method of paragraph 0031 described above. Defects of food: Evaluation was made based on the occurrence of twisting of the base material.
表１において、「デラミネーション」とは、粘着テープを温度６５℃、相対湿度８０％の雰囲気下に２４時間放置したのち、温度２３℃、相対湿度５０％の雰囲気下で十分冷却した後、粘着テープを引き出してみて基材のアルミ箔と横一軸延伸フィルムとのデラミネーションを、次の評価基準
良 ：基材のアルミ箔とフィルムのデラミネーションがないもの
不良：基材のアルミ箔とフィルムのデラミネーションが発生したもの
で評価した。
In Table 1, “delamination” means that the adhesive tape is allowed to stand in an atmosphere at a temperature of 65 ° C. and a relative humidity of 80% for 24 hours, and then sufficiently cooled in an atmosphere at a temperature of 23 ° C. and a relative humidity of 50%. Pull out the tape and delamination between the aluminum foil of the base material and the laterally uniaxially stretched film. The following evaluation criteria are good: Defective product without base film aluminum foil and film delamination: Base material aluminum foil and film Evaluation was performed using delamination.
（実施例１）
ＨＤＰＥ（日本ポリエチレン社製 ノバテックＨＤ ＨＦ５６２密度０．９６３ｇ／ｃｍ３）を押出機に供給し、溶融し、フィルムダイを通して押し出し、成形機で冷却することにより、厚みが約２５０μｍの未延伸シートを成形した。この未延伸シートを１２０℃のテンター内で１０倍に横延伸し、２５μｍの横一軸延伸フィルムを得た。
Example 1
HDPE (Novatec HD HF562 density 0.963g / cm 3 ) manufactured by Nippon Polyethylene Co., Ltd. is fed to an extruder, melted, extruded through a film die, and cooled by a molding machine to form an unstretched sheet having a thickness of about 250 μm. did. This unstretched sheet was stretched 10 times in a 120 ° C. tenter to obtain a 25 μm laterally uniaxially stretched film.
前記フィルムと厚さ７μｍのアルミ箔（日本製箔社製 Ａ１Ｎ３０Ｈ−Ｏ材）を押出ラミネートして貼り合わせた。接着剤は横一軸延伸フィルムの上に高密度ポリエチレン（比重０．９５）を使用し２０μｍの厚みで積層し、ついで低密度ポリエチレン（比重０．９２）を１５μｍの厚みで積層した。 The film and an aluminum foil having a thickness of 7 μm (A1N30H-O material manufactured by Nihon Foil Co., Ltd.) were extruded and laminated. As the adhesive, high-density polyethylene (specific gravity 0.95) was laminated on a lateral uniaxially stretched film at a thickness of 20 μm, and then low-density polyethylene (specific gravity 0.92) was laminated at a thickness of 15 μm.
得られた基材のアルミ箔側に、背面処理剤（一方社油脂工業社製 ピーロイル１０１０）を０．１ｇ／ｍ２の量になるように塗布し、横一軸延伸フィルム側に合成ゴム系粘着剤を２５μｍの厚みで塗布し、紙管に５０ｍの長さで巻き取った後、５０ｍｍ幅に切断して、粘着テープを得た。 On the aluminum foil side of the obtained base material, a back surface treatment agent (Pyrole 1010 manufactured by Yushi Kogyo Co., Ltd.) was applied in an amount of 0.1 g / m 2 , and a synthetic rubber-based adhesive was applied to the lateral uniaxially stretched film side. The agent was applied with a thickness of 25 μm, wound up on a paper tube with a length of 50 m, and then cut into a width of 50 mm to obtain an adhesive tape.
（実施例２）
高密度ポリエチレン層を１０μｍ、低密度ポリエチレン層を５μｍとした以外、実施例１と同様にして粘着テープを得た。
(Example 2)
An adhesive tape was obtained in the same manner as in Example 1 except that the high density polyethylene layer was 10 μm and the low density polyethylene layer was 5 μm.
（実施例３）
高密度ポリエチレン層を４０μｍ、低密度ポリエチレン層を２０μｍとした以外、実施例１と同様にして粘着テープを得た。
(Example 3)
An adhesive tape was obtained in the same manner as in Example 1 except that the high-density polyethylene layer was 40 μm and the low-density polyethylene layer was 20 μm.
（比較例１）
接着剤として低密度ポリエチレン(比重０．９２)３５μｍを使用し、高密度ポリエチレンは使用しなかった以外、実施例１と同様にして粘着テープを得た。
(Comparative Example 1)
A pressure-sensitive adhesive tape was obtained in the same manner as in Example 1 except that 35 μm of low density polyethylene (specific gravity 0.92) was used as an adhesive and high density polyethylene was not used.
（比較例２）
接着剤として高密度ポリエチレン(比重０．９５)３５μｍを使用し、低密度ポリエチレンは使用しなかった以外、実施例１と同様にして粘着テープを得た。
(Comparative Example 2)
A pressure-sensitive adhesive tape was obtained in the same manner as in Example 1 except that 35 μm of high-density polyethylene (specific gravity 0.95) was used as an adhesive and low-density polyethylene was not used.
（比較例３）
横一軸延伸フィルムに低密度ポリエチレン層（比重０．９２）を１．５μｍ積層し、ついで高密度ポリエチレン層を２０μｍ（比重０．９５）積層した以外、実施例１と同様にして粘着テープを得た。
(Comparative Example 3)
A pressure-sensitive adhesive tape was prepared in the same manner as in Example 1 except that a low-density polyethylene layer (specific gravity 0.92) was laminated to 1.5 μm on a horizontally uniaxially stretched film, and then a high-density polyethylene layer was laminated to 20 μm (specific gravity 0.95). Obtained.
（比較例４）
低密度ポリエチレン層の厚みを４μｍとした以外、実施例１と同様にして粘着テープを得た。
(Comparative Example 4)
An adhesive tape was obtained in the same manner as in Example 1 except that the thickness of the low density polyethylene layer was 4 μm.
（比較例５）
高密度ポリエチレン層の厚みを８μｍとした以外、実施例１と同様にして粘着テープを得た。
(Comparative Example 5)
An adhesive tape was obtained in the same manner as in Example 1 except that the thickness of the high-density polyethylene layer was 8 μm.
（比較例６）
ドライラミネート法により積層した。すなわち本願明細書段落００３２の方法により横一軸延伸フィルムを得た。
次に、前記フィルムの一面に二液硬化型ポリウレタン系接着剤からなる接着剤を約１μｍの厚さで塗布し、ついで平均分子量５０，０００のポリエチレンイミンを固形分濃度１ｗｔ％の含有割合になるように調整した接着剤を塗布し、充分に乾燥後アルミ箔を貼り合わせ積層体を得た。それ以外は本願明細書段落００３４と同様にして粘着テープを得た。
(Comparative Example 6)
Lamination was performed by a dry laminating method. That is, a lateral uniaxially stretched film was obtained by the method of paragraph 0032 of the present specification.
Next, an adhesive made of a two-component curable polyurethane adhesive is applied to one surface of the film in a thickness of about 1 μm, and then polyethyleneimine having an average molecular weight of 50,000 is contained at a solid content concentration of 1 wt%. The adhesive prepared as described above was applied, and after sufficiently drying, an aluminum foil was bonded to obtain a laminate. Otherwise, an adhesive tape was obtained in the same manner as in paragraph 0034 of the present specification.
表１から明らかなように、本発明は、テープを引き出した際ねじれが発生せずかつ、手切れ性（テープのカットの容易性）のよい粘着テープを得ることができる。 As is apparent from Table 1, the present invention can provide an adhesive tape that does not twist when the tape is pulled out and has good hand cutting properties (ease of tape cutting).
本発明の粘着テープは、ダクトホース等の配管に断熱材を巻きつけた際、断熱材を固定、被覆する粘着テープに好適に用いることができる。 The pressure-sensitive adhesive tape of the present invention can be suitably used for a pressure-sensitive adhesive tape that fixes and covers a heat insulating material when the heat insulating material is wound around a pipe such as a duct hose.
１ 基材
１１ 横一軸延伸フィルム
１２ アルミ箔
１３ 低密度ポリエチレン層
１４ 高密度ポリエチレン層
２ 粘着剤
DESCRIPTION OF SYMBOLS 1 Base material 11 Horizontal uniaxially stretched film 12 Aluminum foil 13 Low density polyethylene layer 14 High density polyethylene layer 2 Adhesive
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| JP2009065513A JP5302725B2 (en) | 2009-03-18 | 2009-03-18 | Adhesive tape |
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| JP5744607B2 (en) * | 2011-04-11 | 2015-07-08 | 電気化学工業株式会社 | Adhesive film |
| JP5557342B2 (en) * | 2011-07-22 | 2014-07-23 | 電気化学工業株式会社 | Aluminum foil adhesive tape |
| JP5560512B2 (en) * | 2011-09-02 | 2014-07-30 | 因幡電機産業株式会社 | Connection structure of connecting tape and insulation using it |
| CN102965043B (en) * | 2012-11-06 | 2014-04-30 | 浙江德洋胶粘制品有限公司 | Toughened aluminum foil tape and manufacturing method thereof |
| KR102317518B1 (en) * | 2018-03-02 | 2021-10-25 | (주)엘엑스하우시스 | A sandwich panel and a manufacturing method thereof |
| US11198273B2 (en) | 2016-06-10 | 2021-12-14 | Lg Hausys, Ltd. | Sandwich panel and a manufacturing method thereof |
| KR102317517B1 (en) * | 2018-03-02 | 2021-10-25 | (주)엘엑스하우시스 | A sandwich panel and a manufacturing method thereof |
| KR102317515B1 (en) * | 2018-03-02 | 2021-10-25 | (주)엘엑스하우시스 | A sandwich panel and a manufacturing method thereof |
| US11225056B2 (en) | 2016-06-10 | 2022-01-18 | Lg Hausys, Ltd. | Sandwich panel and a manufacturing method thereof |
| KR102269941B1 (en) * | 2018-03-02 | 2021-06-25 | (주)엘지하우시스 | A sandwich panel and a manufacturing method thereof |
| KR102294372B1 (en) | 2016-06-10 | 2021-08-26 | (주)엘엑스하우시스 | A molded object and a manufacturing method thereof |
| KR102317516B1 (en) * | 2018-03-02 | 2021-10-25 | (주)엘엑스하우시스 | A sandwich panel and a manufacturing method thereof |
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| JP2005193609A (en) * | 2004-01-09 | 2005-07-21 | Idemitsu Unitech Co Ltd | Multi-layer film |
| JP5002252B2 (en) * | 2006-12-06 | 2012-08-15 | 電気化学工業株式会社 | Adhesive tape and method for producing the same |
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