JP7282032B2 - 多層フィルムを含む物品 - Google Patents
多層フィルムを含む物品 Download PDFInfo
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- JP7282032B2 JP7282032B2 JP2019530663A JP2019530663A JP7282032B2 JP 7282032 B2 JP7282032 B2 JP 7282032B2 JP 2019530663 A JP2019530663 A JP 2019530663A JP 2019530663 A JP2019530663 A JP 2019530663A JP 7282032 B2 JP7282032 B2 JP 7282032B2
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- Laminated Bodies (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
本出願は、2016年12月9日に出願された米国特許仮出願第62/432337号の優先権を主張するものであり、その開示の全容が参照により本明細書に組み込まれる。
構造及び/又はテクスチャを有する、ポリマーフィルム及びフィルム複合体を、製造し更なる機能性を得ることが、望まれている。このような機能性としては、テクスチャ加工された表面が平滑な表面に対してより広い表面積となることによる、光学的効果、及び/又は液体吸収若しくは固形分保持の増加を挙げることができる。
例示的実施形態
1.第1の連続ポリマー層と第2の連続ポリマー層との間に配置されているストランドのランダムなネットワーク(いくつかの実施形態では、伸びたストランド)及び連結領域(ランダムなネットワークは第1の光学濃度を有し、連結領域は第2の光学濃度を有し、第1の光学濃度は第2の光学濃度よりも高く、いくつかの実施形態では、連結領域の少なくとも一部に開口部が存在し、他方、いくつかの実施形態では、層内に開口部が存在しない(すなわち、層内に貫通穴(スルーホール)が存在しない。))を示す、少なくとも1つのポリマー層(いくつかの実施形態では、それぞれ、少なくとも2、3、4、5、6つ、又は更には少なくとも7つのポリマー層)を有する、第1の連続ポリマー層と第2の連続ポリマー層を含む、物品。いくつかの実施形態では、ストランドのランダムなネットワーク及び連結領域をそれぞれが示す更なるポリマー層の全て、又は更なるポリマー層のいくつかは、ストランドのランダムなネットワーク及び連結領域を示す別の層に隣接している。
2.ストランドのランダムなネットワーク及び連結領域を示す層が、独立して、ポリオレフィン材料(例えば、ポリプロピレン及び/又はポリエチレン)、変性ポリオレフィン材料、ポリビニルクロライド、ポリカーボネート、ポリスチレン、ポリエステル(コポリエステルを含む)、ポリ乳酸、ポリフッ化ビニリデン、(メタ)アクリル(例えば、ポリメチルメタクリレート)、ウレタン、アクリルウレタン、エチレンビニルアセテートコポリマー、アクリレート変性エチレンビニルアセテートポリマー、エチレンアクリル酸コポリマー、ナイロン、エンジニアリングポリマー(例えば、ポリケトン及び/又はポリメチルペンタン)、又はエラストマー(例えば、天然ゴム、合成ゴム、イソプレン、ブタジエン、若しくはエチレン(ブチレン)ブロックを含有するスチレンブロックコポリマー、メタロセン触媒ポリオレフィン、ポリウレタン;若しくはポリジオルガノシロキサン)のうちの少なくとも1つを含む、例示的実施形態1に記載の物品。
3.ストランドのランダムなネットワーク及び連結領域を示す少なくとも1つの層が、少なくとも1%(いくつかの実施形態では、少なくとも5、10、15、20、25、30、35、40、45、50、55、60、65、70、75%、又は更には少なくとも80%、いくつかの実施形態では、1~80%の範囲)の開放気孔率を有する、例示的実施形態1又は2に記載の物品。
4.ストランドのランダムなネットワーク及び連結領域を示す層が、残りのポリマー多層フィルムから分離可能である、例示的実施形態1~3のいずれか1つに記載の物品。
5.第1の連続層及び第2の連続層が、独立して、ポリオレフィン材料(例えば、ポリプロピレン及び/又はポリエチレン)、変性ポリオレフィン材料、ポリビニルクロライド、ポリカーボネート、ポリスチレン、ポリエステル(コポリエステルを含む)、ポリ乳酸、ポリフッ化ビニリデン、(メタ)アクリル(例えば、ポリメチルメタクリレート)、ウレタン、アクリルウレタン、エチレンビニルアセテートコポリマー、アクリレート変性エチレンビニルアセテートポリマー、エチレンアクリル酸コポリマー、ナイロン、エンジニアリングポリマー(例えば、ポリケトン及び/又はポリメチルペンタン)、又はエラストマー(例えば、天然ゴム、合成ゴム、イソプレン、ブタジエン、若しくはエチレン(ブチレン)ブロックを含有するスチレンブロックコポリマー、メタロセン触媒ポリオレフィン、ポリウレタン;若しくはポリジオルガノシロキサン)のうちの少なくとも1つを含む、例示的実施形態1~4のいずれか1つに記載の物品。
6.第1の連続層が、スキン層である、例示的な実施形態1~5のいずれか1つに記載の物品。
7.ストランドのランダムなネットワーク及び連結領域を示す第2の層を更に含む、例示的実施形態1~6のいずれか1つに記載の物品。
8.ストランドのランダムなネットワーク及び連結領域を示す第2の層が、ストランドのランダムなネットワーク及び連結領域を含む第1の層とは異なる、ストランドのランダムなネットワーク及び連結領域を有する、例示的実施形態7の物品。
9.1~1000μmの範囲の厚さ(いくつかの実施形態では、25~500μm、50~250μm、又は更には2~10μmの範囲の厚さ)を有する、例示的実施形態1~8のいずれか1つに記載の物品。
10.染料又は顔料のうちの少なくとも1つを更に含む(例えば、白色、黄色、緑色、青色、赤色、橙色、褐色、黒色などの色を付与している)、例示的実施形態1~9のいずれか1つに記載の物品。
11.少なくとも1つの帯電防止材料を更に含む、例示的実施形態1~10のいずれか1つに記載の物品。
12.インク又は塗料受容材料のうち少なくとも1つを更に含む、例示的実施形態1~11のいずれか1つに記載の物品。
13.金属(例えば、アルミニウム、青銅、ステンレス鋼、亜鉛、鉄、スズ、銀、金、及び/又はチタン)粒子を更に含む、例示的実施形態1~12のいずれか1つに記載の物品。
14.剥離剤を更に含む、例示的実施形態1~13のいずれか1つに記載の物品。
15.耐摩耗材料を更に含む、例示的実施形態1~14のいずれか1つに記載の物品。
16.滑剤又はブロッキング防止剤のうち少なくとも1つを更に含む、例示的実施形態1~15のいずれか1つに記載の物品。
17.ヒンダードアミン光安定剤(HALS)を更に含む、例示的実施形態1~16のいずれか1つに記載の物品。
18.UV安定剤を更に含む、例示的実施形態1~17のいずれか1つに記載の物品。
19.縦方向及び横方向を有し、ポリマー多層フィルムが、横方向において弾性を有する、例示的実施形態1~18のいずれか1つに記載の物品。
20.ポリマー多層フィルムの第1の主表面又は第2の主表面のいずれかに取り付けられた主表面を有するライナーを更に含む、例示的実施形態1~19のいずれか1つに記載の物品。いくつかの実施形態では、ポリマー多層フィルムの各々の主表面は、それに取り付けられたライナーを有する。
21.ライナーが、ストランドのランダムなネットワーク及び連結領域を示すポリマー多層フィルムを含む、例示的実施形態20に記載の物品。
22.本明細書に記載のポリマー多層フィルムの第1の主表面又は第2主面のうちの少なくとも1つ(いくつかの実施形態では、それぞれ)は、少なくとも0.4(いくつかの実施形態では、少なくとも0.5、0.6、0.7、又は更に少なくとも0.8、いくつかの実施形態では、0.4~0.8の範囲)の摩擦係数を有する、例示的実施形態1~21のいずれか1つに記載の物品。
23.テープである、例示的実施形態1~22のいずれか1つに記載の物品。
7層のフィルムを製造するには、7層環状積層ダイ(Labtech Engineering(Samut Prakan,Thailand)から商品名「COEX7層」(LF-400型)で入手)を使用して、7枚の積層ダイプレートのみが存在することを除き、図3及び図3Aに示される装置を使用した。ダイへの空気流を手動で制御し、約2:1のブローアップ比とした。続いて、気泡を、ダイの上で約3メートル(10フィート)に押しつぶし、巻き取った。供給材料を送り込むには、約30:1の長さ対直径比を有する、7個の独立した直径20mmの押出機によった。
ポリマー多層フィルムは、低密度ポリエチレンのみを含有する第1、第2、第3、及び第4の押出機、同じ化学発泡剤とスチレンエチレンブチレンスチレン(SEBS)コポリマー(PolyOne(Avon Lake,OH)から商品名「KRATON G 1657」として市販されている)とのブレンドを含有していた第5の押出機、並びにエチレン酢酸ビニルコポリマー(Westlake Chemical Corporation(Houston,TX)から商品名「WESTLAKE EF446」で入手)を含有していた第6及び第7の押出機を除いて、実施例1に記載の通りに調整した。化学発泡剤を入れている層については、215℃の溶融温度を維持した。全ての他の層について、180℃の溶融温度を維持した。ダイを180℃で維持した。
なお、以上の各実施形態に加えて以下の態様について付記する。
(付記1)
第1の連続ポリマー層及び第2の連続ポリマー層を含む物品であって、前記第1の連続ポリマー層と前記第2の連続ポリマー層との間に配置されているストランドのランダムなネットワーク及び連結領域を示す少なくとも1つのポリマー層を有する、物品。
(付記2)
ストランドのランダムなネットワーク及び連結領域を示す少なくとも1つのポリマー層が、少なくとも20パーセントの開放気孔率を有する、付記1に記載の物品。
(付記3)
ストランドのランダムなネットワーク及び連結領域を示す少なくとも1つのポリマー層が、残りのポリマー多層フィルムから分離可能である、付記1又は2に記載の物品。
(付記4)
ポリマー多層フィルムである、付記1~3のいずれか一項に記載の物品。
(付記5)
本明細書に記載のポリマー多層フィルムの前記第1の主表面又は第2の主面のうちの少なくとも1つは、少なくとも0.4の摩擦係数を有する、付記1~4のいずれか一項に記載の物品。
(付記6)
グラフィック物品である、付記1~5のいずれか一項に記載の物品。
Claims (5)
- 第1の連続ポリマー層と、
第2の連続ポリマー層と、
前記第1の連続ポリマー層と前記第2の連続ポリマー層との間に配置されているポリマー多層フィルムと、
を有し、
前記ポリマー多層フィルムは、それぞれがストランドのランダムなネットワーク及び連結領域を示す複数のインフレーションポリマーフィルム層を有し、
前記ストランドのランダムなネットワークは、第1の光学濃度を有し、前記連結領域は、第2の光学濃度を有し、
前記第1の光学濃度は、前記第2の光学濃度よりも大きく、かつ
前記ポリマー多層フィルムの第1の主表面又は第2の主面のうちの少なくとも1つは、第1の連続ポリマー層及び/又は第2の連続ポリマー層をテクスチャ加工する、テクスチャ加工されたフィルム。 - 前記複数のインフレーションポリマーフィルム層における少なくとも1つのポリマー層が、少なくとも20パーセントの開放気孔率を有する、請求項1に記載のフィルム。
- 前記複数のインフレーションポリマーフィルム層における少なくとも1つのポリマー層が、残りのポリマー多層フィルムから分離可能である、請求項1又は2に記載のフィルム。
- グラフィック物品である、請求項1~3のいずれか一項に記載のフィルム。
- テープである、請求項1~4のいずれか一項に記載のフィルム。
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