JP7141949B2 - 表面保護フィルム及び関連方法 - Google Patents
表面保護フィルム及び関連方法 Download PDFInfo
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- JP7141949B2 JP7141949B2 JP2018548404A JP2018548404A JP7141949B2 JP 7141949 B2 JP7141949 B2 JP 7141949B2 JP 2018548404 A JP2018548404 A JP 2018548404A JP 2018548404 A JP2018548404 A JP 2018548404A JP 7141949 B2 JP7141949 B2 JP 7141949B2
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- film
- protective film
- adhesive
- protection film
- polymer
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- 239000012748 slip agent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012719 thermal polymerization Methods 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000013008 thixotropic agent Substances 0.000 description 1
- 150000003606 tin compounds Chemical class 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Images
Classifications
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- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
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- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
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- B32B25/045—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
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- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
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- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
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Landscapes
- Adhesive Tapes (AREA)
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Description
基材表面を保護する接着剤付物品及び方法が提供される。より詳細には、商用及び軍事航空機などの与圧車両の表面を保護するのに有用な接着剤付物品が提供される。
航空機の表面は、高速での異物衝突による損傷を受けやすい。異物による損傷は、地上近くに位置し、離着陸時に岩や瓦礫に衝突する、航空機の着陸ギア部品及び扉の下側で特に起こりやすい。軍用貨物機は、この種の損傷に特に弱い場合がある。航空機の外面が受ける衝撃はさほど限定的ではなく、飛行中のいかなる時にも発生する可能性がある。
製造業者は、コーティングや保護テープを施すことによって、又は金属パネルを設置して、表面を損傷から守ることによって、異物による損傷を軽減しようと試みてきた。金属パネルは非常に効果的であるが、大幅な重量の追加となり、長期間にわたって損傷を受けると頻繁に交換する必要がある。噴霧コーティングはある程度の保護を提供するが、十分な衝撃保護を提供するには通常なら相当の厚みを必要とするため、効果は限定されがちである。十分な厚さの発泡系保護テープは高いレベルの衝撃保護を提供し、性能と利便性との合理的な組み合わせである。
本明細書で使用される場合、
「直径」は、所与の物体又は特徴の最長寸法を指す。
「剥離ライナー」は、「ライナー」という用語と互換的に使用され、感圧性接着剤の表面と密着させた後に接着剤コーティングを損傷することなく後に脱離することのできる可撓性シートを指す。
「基材」とは、意図される目的のために感圧性接着剤コーティングが適用される表面を指す。
「テープ」とは、バッキングに適用された感圧性接着剤コーティングを指す。
例示的な一実施形態による表面保護フィルムが図1に示されており、本明細書において、符号100により表されている。図示されるように、保護フィルム100は複数層から成り、該複数層は、第1のポリマーフィルム102、発泡接着剤104、第2のポリマーフィルム106、感圧性接着剤108を含むが、それらに限定されない。
第1のポリマーフィルム102は、要求に応じて下の基材から保護フィルム100を剥離しやすくするように、少なくともある程度の伸びを有することが好ましい。いくつかの実施形態においては、第1のポリマーフィルム102は、破断時の長手方向の伸び率が、少なくとも約100%、少なくとも約200%、又は少なくとも約300%である。
発泡接着剤104、204は、好ましくはアクリルポリマー又はシリコーンポリマー系接着剤由来の発泡体である。アクリルポリマー及びシリコーンポリマーは、それらの紫外線光安定性、順応性、及び応力分配能力のために有用である。
保護フィルム全体に十分な接着力とクリーンな脱離性をもたらす限り、既知のどんな感圧性接着剤を使用してもよい。接着剤は、典型的に、それらが接着される基材のタイプに基づいて選択される。感圧性接着剤の部類には、アクリル、粘着付与ゴム、粘着付与合成ゴム、エチレン酢酸ビニル、及びシリコーンポリマーなどが含まれる。好適なアクリル系及びシリコーン系の接着剤は、例えば、米国特許第3,239,478号(Harlan)、同第3,935,338号(Robertson)、同第5,169,727号(Boardman)、同第RE24,906号(Ulrich)、同第4,952,650号(Youngら)、同第4,181,752号(Martensら)、及び同第8,298,367号(Begerら)に開示されている。
実施形態1 表面保護フィルムであって、複数の層を、次の順序で備える表面保護フィルムであって、該表面保護フィルムの主面に露出した第1のポリマーフィルムと、発泡接着剤と、第2のポリマーフィルムと、感圧性接着剤と、を備える表面保護フィルム。
実施形態2 該第1及び第2のポリマーフィルムのそれぞれがポリウレタンエラストマーを含む、実施形態1の表面保護フィルム。
実施形態3 該ポリウレタンエラストマーが熱可塑性ポリウレタンエラストマーを含む、実施形態2に記載の表面保護フィルム。
実施形態4 該発泡接着剤がシンタクチックフォームを含む、実施形態1~3のいずれかに記載の表面保護フィルム。
実施形態5 該シンタクチックフォームが、非三級アルキルアルコールのアクリル酸エステル又はメタクリル酸エステルの1又はそれ以上の反応生成物を含み、該非三級アルキルアルコールが1~20個の炭素原子を有する、実施形態4に記載の表面保護フィルム。
実施形態6 該発泡接着剤が、発泡接着剤中に均一に分布した熱可塑性発泡性ポリマー微小球を更に含んでおり、該熱可塑性発泡性ポリマー微小球は、未膨張発泡性ポリマー微小球、少なくとも部分的に膨張した発泡性ポリマー微小球、又はその両方を含む、実施形態5に記載の表面保護フィルム。
実施形態7 複数の層を通って延在するミシン目の配列を更に含み、該ミシン目が、該表面保護フィルムの両側面間に流体連通を提供する、実施形態1~6のいずれかに記載の表面保護フィルム。
実施形態8 該ミシン目が100マイクロメートル~3200マイクロメートルの平均直径を有する、実施形態7に記載の表面保護フィルム。
実施形態9 該ミシン目が200マイクロメートル~2000マイクロメートルの平均直径を有する、実施形態8に記載の表面保護フィルム。
実施形態10 該ミシン目が350マイクロメートル~1000マイクロメートルの平均直径を有する、実施形態9に記載の表面保護フィルム。
実施形態11 該ミシン目が1平方メートル当たり6000~100000の面密度を有する、実施形態7~10のいずれかに記載の表面保護フィルム。
実施形態12 該ミシン目が1平方メートル当たり8000~70000の面密度を有する、実施形態11に記載の表面保護フィルム。
実施形態13 該ミシン目が1平方メートル当たり10000~40000の面密度を有する、実施形態12に記載の表面保護フィルム。
実施形態14 該第1のポリマーフィルムが150マイクロメートル~600マイクロメートルの平均厚さを有する、実施形態1~13のいずれかに記載の表面保護フィルム。
実施形態15 該第1のポリマーフィルムが200マイクロメートル~500マイクロメートルの平均厚さを有する、実施形態14に記載の表面保護フィルム。
実施形態16 該第1のポリマーフィルムが250マイクロメートル~400マイクロメートルの平均厚さを有する、実施形態15に記載の表面保護フィルム。
実施形態17 該第2のポリマーフィルムが50マイクロメートル~300マイクロメートルの平均厚さを有する、実施形態1~16のいずれかに記載の表面保護フィルム。
実施形態18 該第2のポリマーフィルムが70マイクロメートル~200マイクロメートルの平均厚さを有する、実施形態17に記載の表面保護フィルム。
実施形態19 該第2のポリマーフィルムが90マイクロメートル~150マイクロメートルの平均厚さを有する、実施形態18に記載の表面保護フィルム。
実施形態20 該発泡接着剤が250マイクロメートル~2500マイクロメートルの平均厚さを有する、実施形態1~19のいずれかに記載の表面保護フィルム。
実施形態21 該発泡接着剤が350マイクロメートル~1500マイクロメートルの平均厚さを有する、実施形態20に記載の表面保護フィルム。
実施形態22 該発泡接着剤が450マイクロメートル~1000マイクロメートルの平均厚さを有する、実施形態21に記載の表面保護フィルム。
実施形態23 接着していた基材から該表面保護フィルムを、該感圧性接着剤を該基材上に実質上残すことなく剥離することができる、実施形態1~22のいずれかに記載の表面保護フィルム。
実施形態24 車両用基材保護方法であって、保護が必要な時に、実施形態1~23のいずれかに記載の表面保護フィルムを該車両用基材の外側面に適用する工程と、保護が不要な時に、該表面保護フィルムを該外側面から、該外側面の接線面に対して35度以上の角度で剥離する工程によって、該車両用基材から該表面保護フィルムを脱離する工程と、を備える方法。
実施形態25 車両用基材が航空機の外装パネルである、実施形態24の車両用基材保護方法。
℃:摂氏度
ft/min:フィート毎分
g/m2:グラム/平方メートル
L:リットル
lb/in:ポンド/インチ
Kg/cm:キログラム/センチメートル
mm:ミリメートル
nm:ナノメートル
μM:マイクロメートル
mil:1/1000インチ
m/min:メートル/分
Pa:パスカル
psi:ポンド重量毎平方インチ
RH:相対湿度
5925:ミネソタ州セントポールの3M社から入手される製品名「VHB5925」のアクリルフォームテープ
8641:3M社から入手される製品名「POLYURETHAN PROTECTIVE TAPE 8641、PERFORATED」の穴あき保護ポリウレタンテープ
8681:3M社から入手される製品名「8681HS POLYURETHAN PROTECTIVE TAPE」の12mil(304.8μm)厚の接着剤なしポリウレタンフィルム
8664HS:3M社から入手される製品名「8664HS POLYURETHAN PROTECTIVE TAPE」から入手される6mil(152.4μm)厚のポリウレタンテープ
剥離接着力
7.6cm×20.3cmのアルミニウムパネルを、ペンシルバニア州ピッツバーグのPPG Industries社から入手される製品名DEFT 02Y40Aの「MIL-PRF-23377」で下塗りした後、PPG社から入手される製品名DEFT99-GY-001のトップコート「MIL-PRF-85285」で被覆した。プライマーは、トップコートを適用する前に21℃で24時間乾燥させた。テープの適用前に、トップコートを約1年間適用した。2.54cm幅のサンプルテープを塗装面全体に適用した後、2.0kgローラで各方向に2回圧延した。その結果得られたアセンブリを、12インチ/分の速度、180度の角度で、ASTM D3330に従って評価した。
テープサンプルを24mil(0.610mm)厚のむき出しのアルミニウムパネルに接着し、21℃で7日間放置した。次いで、24パイント(11.36L)の1/2インチ(12.72mm)の河岩を用いて、70psi(482.6KP)の圧力及び90度の入射角で、ASTM D3170に従ってサンプルを評価した。
テープサンプルを24mil(0.610mm)厚のむき出しのアルミニウムパネルに接着し、21℃で7日間放置した。次に、4フィート(1.81Kg)の高さから4ポンド(4.81kg/m)の錘を落下させて、サンプルをASTM D6905に従って評価した。各サンプルに2回衝撃を加えた。
5ft/分(1.52m/分)、60psi(413.7KPa)の圧力、21℃の条件下で動作させたラミネータを用いて、8681と8664HSフィルムの非接着面間に5925フィルムを積層させた。次に、素材をレーザ穿孔し、0.25インチ(6.35cm)毎に離間させた10mil(254.0μm)の孔を形成した。
(i)23℃、相対湿度50%、1日後、ii)乾熱71℃、7日後、(iii)49℃、相対湿度95%の条件下で、上述したような剥離接着性について、実施例と比較例(8641フィルム)を試験した。結果を表1に列挙する。
実施例と比較例8641フィルムにグラベロメータ試験を行った。8641も実施例1もASTM D3170に示されるように10Aと評価され、テープに欠けも損傷も観察されなかった。
実施例と比較例8641フィルムに落下衝撃試験を行った。8641と実施例1のいずれにも、破砕、割れ、又は欠けは見られなかった。
Claims (9)
- 複数の層を、次の順序で備える表面保護フィルムであって、
前記表面保護フィルムの主面に露出した第1のポリマーフィルムと、
少なくとも250マイクロメートルの平均厚さを有する、発泡接着剤と、
第2のポリマーフィルムと、
感圧性接着剤と、
を備える表面保護フィルム。 - 前記第1及び第2のポリマーフィルムのそれぞれがポリウレタンエラストマーを含む、請求項1に記載の表面保護フィルム。
- 前記ポリウレタンエラストマーが熱可塑性ポリウレタンエラストマーを含む、請求項2に記載の表面保護フィルム。
- 前記発泡接着剤がシンタクチックフォームを含む、請求項1~3のいずれか一項に記載の表面保護フィルム。
- 前記シンタクチックフォームが、非三級アルキルアルコールのアクリル酸エステル又はメタクリル酸エステルの1又はそれ以上の反応生成物を含み、前記非三級アルキルアルコールが1~20個の炭素原子を有する、請求項4に記載の表面保護フィルム。
- 前記発泡接着剤が、前記発泡接着剤中に均一に分布した熱可塑性発泡性ポリマー微小球を更に含んでおり、該熱可塑性発泡性ポリマー微小球は、未膨張発泡性ポリマー微小球、少なくとも部分的に膨張した発泡性ポリマー微小球、又はその両方を含む、請求項5に記載の表面保護フィルム。
- 複数の層を通って延在するミシン目の配列を更に含み、前記ミシン目が、前記表面保護フィルムの両側面間に流体連通を提供する、請求項1~6のいずれか一項に記載の表面保護フィルム。
- 前記ミシン目が100マイクロメートル~3200マイクロメートルの平均直径と1平方メートル当たり6000~100000の面密度とを有する、請求項7に記載の表面保護フィルム。
- 車両用基材保護方法であって、
保護が必要な時に、請求項1~8のいずれか一項に記載の表面保護フィルムを前記車両用基材の外側面に適用する工程と、
保護が不要な時に、前記表面保護フィルムを前記外側面から、前記外側面の接線面に対して35度以上の角度で剥離する工程によって、前記車両用機材から前記表面保護フィルムを脱離する工程と、を備える方法。
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