JP7442649B2 - 色のグラデーションを有するブロー成形多層物品 - Google Patents
色のグラデーションを有するブロー成形多層物品 Download PDFInfo
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- JP7442649B2 JP7442649B2 JP2022541918A JP2022541918A JP7442649B2 JP 7442649 B2 JP7442649 B2 JP 7442649B2 JP 2022541918 A JP2022541918 A JP 2022541918A JP 2022541918 A JP2022541918 A JP 2022541918A JP 7442649 B2 JP7442649 B2 JP 7442649B2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2501/00—Containers having bodies formed in one piece
- B65D2501/0009—Bottles or similar containers with necks or like restricted apertures designed for pouring contents
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Description
ΔE*=[(L* X-L* Y)2+(a* X-a* Y)2+(b* X-b* Y)2]1/2
「X」は第1の測定ポイントを表し、「Y」はグラデーションに沿った2番目の測定ポイントを表す。
物品が容器又はボトルである場合、臨界垂直荷重、光沢20°、不透明度、及び分光測光の測定は全て、物品から取り外されたサンプルパネルで行った。長さ100mm及び幅約50mmの寸法を有するサンプルを、物品壁の主要部分から切り取り、肩部/ネック及び底部領域から少なくとも50mm離れて切り取る。
ボトルから取り出したときにサンプルが容易に層間剥離した場合、サンプルには「臨界垂直荷重」に対して0Nのスコアが与えられる。無傷のままであるサンプルについては、スクラッチ試験手順(ASTM D7027-13/ISO 19252:08)に従って、Surface Machine Systems社のScratch 5を使用して、直径1mmの球形チップ、初期荷重:1N、最終荷重:125N、スクラッチ速度:10mm/s、及びスクラッチ長さ100mmを使用してスクラッチ誘発損傷を受ける。100mmより小さいサンプルについては、初期荷重及び最終荷重を同じに維持しながら、スクラッチ長さを減少させることができる。これにより、臨界垂直荷重の推定値が提供される。この推定値を使用して、追加のサンプルを狭い荷重範囲で実行し、臨界垂直荷重をより正確に判断できる。
光沢20°は、ASTM D 2457/D523に従って、20マイクロ-トリ-グロス(BYK-Gardner社)の光沢計で測定される。各ポイントを3回測定し、平均を計算して光沢20°を決定する。全ての光沢測定は、「ベースブラック」と称される黒い背景で行われた。ベースブラックは、X-Riteグレースケールバランスカード(45×45 L*a*b*21.077 0.15-0.29)の黒色領域である。Micro-Tri Gloss計によって与えられる測定値は、「光沢単位」を表す単位「GU」を有する。
特定の位置での壁厚は、直径1/8インチのターゲットボールを使用するOlympus Magna-Mike(登録商標)8600を使用して測定された。各位置で3回の測定を行い、局所壁厚を決定するために平均を計算した。
方法1:Surftest SJ-210(Mitutoyo America Corporation)などの可携帯型表面粗さ試験機を使用して、サンプルパネルをRa(算術平均高さ)について分析し、ボトルの高さを均等にする。粗さは、μin単位で測定される。
不透明度は、直径3mmの開口を有するX-rite 341C(X-Rite社)などの携帯型濃度計を使用して、ボトルの切り取り部分で測定する。絶対光学密度(D)を測定し、D=-log10Tで透過率(T)に変換し、式中、%不透明度は100-%Tであり、5.00の光学密度(D)=100%不透明であり、0.00=0%不透明である。各ポイントを3回測定し、平均を計算して%不透明度を決定する。
試験されるボトルのサンプルは、約5mm×5mm×3mmの寸法を有するサンプルを、連続ボクセルを有する単一のデータセットとして走査することができるマイクロCT X線走査機器を使用して撮像される。マイクロCT走査によって収集されたデータセットにおいて、2μmの等方性空間分解能が必要である。好適な機器の一例は、次の設定、すなわち、72μAで55kVpのエネルギーレベル、3600回の投影、10mmの視野、700msの積分時間、5回の平均化、及び2μmのボクセルサイズで操作される、SCANCO Systemsモデルμ50マイクロCTスキャナ(Scanco Medical AG、Bruttisellen、Switzerland)である。解析される試験サンプルは、プラスチックの矩形片を壁から、好ましくはラベルパネル領域などの平らな部分からX-Acto(登録商標)ナイフで切断し、次いで、亀裂の発生を回避するように注意深く、細い歯のX-Acto(登録商標)鋸を使用して約5mmの幅にサンプルを更にトリミングすることによって調製される。サンプルは、装着発泡体材料と共に垂直に位置付けられ、プラスチックシリンダ形スキャンチューブ内に配置され、マイクロCTスキャナ内に固定される。機器の画像取得設定は、画像強度コントラストが、材料内の複数の層、及び材料そのものと空気及び装着発泡体を含む外部環境とを明確かつ再現可能に識別されるような感度になるように選択される。このコントラスト識別又は必要とされる空間解像度を達成できない画像取得設定は、この方法には不適である。そのキャリパーを有する各サンプルの同様の体積がデータセットに含まれるように、プラスチックサンプルのスキャンが捕捉される。3Dレンダリングを生成するためにデータセットの再構成を実施するためのソフトウェアが、走査機器製造業者によって供給される。後続の画像処理工程及び定量画像解析に好適なソフトウェアとしては、Avizo Lite 2019.1(Visualization Sciences Group/FEI Company(Burlington,Massachusetts,U.S.A.)、及び対応するMATLAB Image Processing Toolbox(The Mathworks Inc.)を伴ったMATLABバージョンR2020bなどのプログラムが挙げられる。
A.ブロー成形多層物品であって、内面及び外面を含む壁によって画定される中空体と、
本体からオリフィスまで延在するネックと、を備え、
壁の少なくとも第1の部分が、
壁の外面及び内面を形成する2つのA層と、A層の間に位置するB層と、を含む、少なくとも3つの層を含み、
A層が透明であり、かつ任意選択的に着色された染料又は顔料を含み、
B層が、効果顔料及び/又は不透明化顔料を含み、
A層及びB層が、熱可塑性樹脂を含み、
A層の厚さが、変化しており、
外面が、外面を形成するA層からの成分によって形成された軸方向の色のグラデーションを含む、ブロー成形多層物品。
B.効果顔料又は不透明化顔料が、A層を通して視認可能である、段落Aに記載の物品。
C.B層が、物品壁の全長にわたって延在し、B層が、可変厚さを含む、段落A及びBに記載のブロー成形多層物品。
D.中空物品が、ネックと基部とを更に含み、B層は、基部におけるB層の幅と比較してネックにおいてより薄い幅を有する、段落A~Cに記載の物品。
E.B層がフォーク状になり、かつ/又はA層がフォーク状になる、段落A~Dに記載の物品。
F.本体の外面が、表面粗さを更に含み、外面全体にわたって、表面粗さが実質的に同じであり、外面全体の表面粗さが、20μin(0.508μm)未満、好ましくは18μin(0.4572μm)未満、代替的に10μin(0.254μm)、より好ましくは5μin(0.127μm)未満、及び更により好ましくは3μin(0.0762)未満で変化している、段落A~Eに記載の物品。
G.外面の一部分の表面粗さが、8μin(0.2032μm)未満、好ましくは5μin(0.127μm)、より好ましくは3μin(0.0762μm)未満、及び更により好ましくは2μin(0.0508μm)未満である、段落A~Fに記載の物品。
H.外面の一部分の表面粗さが、約20μin(0.508μm)~約42μin(1.0668μm)、好ましくは約25μin(0.635μm)~約40μin(1.016μm)、より好ましくは約28μin(0.7112μm)~約38μin(0.9652μm)、及び更により好ましくは約30μin(0.762μm)~約36μin(0.9144μm)の表面粗さである、段落A~Gに記載の物品。
I.本体の外面が、光沢20°を更に含み、外面の長さ及び/又は幅にわたって、表面粗さが実質的に同じであり、本体の外面の長さ及び/又は幅に沿った光沢20°が、15GU未満、好ましくは10GU未満、より好ましくは5GU未満、及び更により好ましくは2GU未満で変化している、段落A~Gに記載の物品。
J.本体の外面が、光沢であり、かつ約65GU~約110GU、好ましくは約68GU~約100GU、より好ましくは約69~約95GU、及び更により好ましくは約70GU~約90GUの光沢20°を含む、段落A~Iに記載の物品。
K.本体の外面が、15以下、好ましくは12以下、より好ましくは10以下、及び更により好ましくは7以下の光沢20°を有する位置を含む、段落A~Jに記載の物品。
L.物品が、約70%~約100%、好ましくは約75%~約95%、及びより好ましくは約80%~約93%の不透明度を有する、段落A~Kに記載の物品。
M.%不透明度が、70%超、好ましくは75%超、より好ましくは80%超、及び更により好ましくは85%超であり得る、段落A~Lに記載の物品。
N.不透明度が、物品の長さにわたって、30%未満、好ましくは25%未満、より好ましくは22%未満、及び更により好ましくは20%未満変化している、段落L~Mに記載の物品。
O.ネックが、内面及び外面を有する壁によって画定され、
ネックが、色のグラデーションを含まず、
ネックの外面の一部分がA層を含み、ネックの外面の一部分がB層を含む、段落A~Nに記載の物品。
P.物品が、100N超、好ましくは105超、及びより好ましくは110超の臨界垂直荷重を有していた、段落A~Oに記載の物品。
Q.効果顔料が、真珠光沢顔料であり、効果顔料が、B層の約0.01重量%~約10重量%を含む、段落A~Pに記載の物品。
R.壁が、約250μm~約1mm、好ましくは約300μm~約700μm、及びより好ましくは約400μm~約600μm、及び更により好ましくは約450μm~約575μmの厚さを含み、壁パネルの平均厚さが、物品の長さにわたって30%未満変化している、段落A~Qに記載の物品。
S.熱可塑性樹脂が、ポリエチレンテレフタレート(PET)、ポリエチレンテレフタレートグリコール(PETG)、ポリスチレン(PS)、ポリカルボナート(PC)、ポリ塩化ビニル(PVC)、ポリエチレンナフタレート(PEN)、ポリシクロヘキシレンジメチレンテレフタレート(PCT)、グリコール修飾PCTコポリマー(PCTG)、シクロヘキサンジメタノール及びテレフタル酸のコポリエステル(PCTA)、ポリブチレンテレフタレート(PBCT)、アクリロニトリルスチレン(AS)、スチレンブタジエンコポリマー(SBC)、低密度ポリエチレン(LDPE)、直鎖低密度ポリエチレン(LLPDE)、高密度ポリエチレン(HDPE)、ポリプロピレン(PP)、並びにこれらの組み合わせからなる群から選択される、段落A~Rに記載の物品。
T.多層物品が、ポリエチレンテレフタレートを含む、段落Sに記載の物品。
U.物品が、非シリンダ形状を有する、段落A~Tに記載の物品。
V.ブロー成形物品の製造方法であって、方法が、
a.予備的形成品を製造するための予備的形成品金型を提供するステップと、
b.溶融熱可塑性樹脂及び効果顔料及び/又は不透明化顔料を含むストリーム-bを、流量-bで予備的形成品金型に注入するステップと、
c.ストリーム-bの注入と同時に又は0.01~2秒内に、溶融熱可塑性樹脂を含むストリーム-aを、初期流量-aで予備的形成品金型に注入するステップと、
d.流量-aを加速して、流量-bよりも速くするステップと、
e.ストリーム-aをストリーム-bに吹き込み、ストリーム-bの外側に流すステップと、
f.冷却して、外面を含む予備的形成品を形成するステップであって、外面の少なくとも一部分が、色のグラデーションを作り出す凝固したストリーム-aを含む、ステップと、
g.予備的形成品をブロー成形して、段落A~Uの物品を形成するステップと、を含む、方法。
Claims (15)
- ブロー成形多層物品であって、
内面及び外面を含む壁によって画定される中空本体と、
前記中空本体からオリフィスまで延在するネックと、
前記中空本体の下端の基部と、を備え、
前記壁の少なくとも第1の部分が、
前記壁の前記外面及び前記内面を形成する2つのA層と、前記A層の間に位置するB層と、を含む、少なくとも3つの層を含み、
前記A層が、透明であり、かつ着色された染料又は顔料を含み、
前記B層が、効果顔料及び/又は不透明化顔料を含み、
前記A層及び前記B層が、熱可塑性樹脂を含み、
前記A層の厚さが、変化しており、
前記壁は、前記中空本体及び前記ネックの大部分にわたって、前記2つのA層と前記B層とを有し、
前記B層は、前記基部における前記B層の幅と比較して前記ネックにおいてより薄い幅を有し、
前記外面が、前記外面を形成する前記A層からの成分によって形成された軸方向の色のグラデーションを含む、ブロー成形多層物品。 - 前記B層が、物品壁の全長にわたって延在し、前記B層が、可変厚さを含む、請求項1に記載のブロー成形多層物品。
- 前記本体の前記外面が、光沢であり、本明細書に開示される光沢20°法に従って測定される場合、約65~約110GUの光沢20°を含む、請求項1又は2に記載のブロー成形多層物品。
- 前記本体の前記外面の長さ及び/又は幅にわたって、表面粗さが実質的に同じである、請求項1~3のいずれかに記載のブロー成形多層物品。
- 前記物品が、ボトルであり、前記ネックが、内面及び外面を有する前記壁によって画定され、
前記ネックが、色のグラデーションを含まず、
前記ネックの前記外面の一部分が、A層を含み、前記ネックの前記外面の一部分が、B層を含む、請求項1~4のいずれかに記載のブロー成形多層物品。 - 前記物品が、不透明度試験方法に従って測定される場合、約70%~約95%の不透明度を有し、前記不透明度が、前記物品の長さにわたって25%未満だけ変化している、請求項1~5のいずれかに記載のブロー成形多層物品。
- 本明細書に開示される臨界垂直荷重法に従って測定される場合、前記物品が、100Nを超える臨界垂直荷重を有した、請求項1~6のいずれかに記載のブロー成形多層物品。
- 前記効果顔料が、真珠光沢顔料であり、前記効果顔料が、前記B層の約0.01重量%~10重量%を含む、請求項1~7のいずれかに記載のブロー成形多層物品。
- 前記壁が、本明細書に開示される局所壁厚法に従って測定される場合、約250μm~約1mmの厚さを含み、壁パネルの平均厚さが、本明細書に開示される局所壁厚法に従って測定した場合、前記壁の長さにわたって50%未満だけ変化している、請求項1~8のいずれかに記載のブロー成形多層物品。
- 前記熱可塑性樹脂が、ポリエチレンテレフタレート(PET)、ポリエチレンテレフタレートグリコール(PETG)、ポリスチレン(PS)、ポリカルボナート(PC)、ポリ塩化ビニル(PVC)、ポリエチレンナフタレート(PEN)、ポリシクロヘキシレンジメチレンテレフタレート(PCT)、グリコール修飾PCTコポリマー(PCTG)、シクロヘキサンジメタノール及びテレフタル酸のコポリエステル(PCTA)、ポリブチレンテレフタレート(PBCT)、アクリロニトリルスチレン(AS)、スチレンブタジエンコポリマー(SBC)、低密度ポリエチレン(LDPE)、直鎖低密度ポリエチレン(LLPDE)、高密度ポリエチレン(HDPE)、ポリプロピレン(PP)、並びにこれらの組み合わせからなる群から選択される、請求項1~9のいずれかに記載のブロー成形多層物品。
- 前記熱可塑性樹脂が、ポリエチレンテレフタレート(PET)である、請求項1~10のいずれかに記載のブロー成形多層物品。
- 前記物品が、非シリンダ形状を有する、請求項1~11のいずれかに記載のブロー成形多層物品。
- 前記壁の前記外面が、前記A層の少なくとも85%を含む、請求項1~12のいずれかに記載のブロー成形多層物品。
- 前記効果顔料又は不透明化顔料が、前記A層を通して視認可能である、請求項1~13のいずれかに記載のブロー成形多層物品。
- ブロー成形物品を製造するための方法であって、前記方法が、
a.予備的形成品を製造するための予備的形成品金型を提供するステップと、
b.溶融熱可塑性樹脂及び効果顔料及び/又は不透明化顔料を含むストリーム-bを、流量-bで前記予備的形成品金型に注入するステップと、
c.ストリーム-bの注入と同時に又は0.01~2秒内に、溶融熱可塑性樹脂を含むストリーム-aを、初期流量-aで前記予備的形成品金型に注入するステップと、
d.前記流量-aを加速して、流量-bよりも速くするステップと、
e.ストリーム-aをストリーム-bに吹き込み、ストリーム-bの外側に流すステップと、
f.冷却して、外面を含む予備的形成品を形成するステップであって、前記外面の少なくとも一部分が、前記色のグラデーションを作り出す凝固したストリーム-aを含む、ステップと、
g.前記予備的形成品をブロー成形して、請求項1~14のいずれか一項に記載の物品を形成するステップと、に従う、方法。
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MX2022008435A (es) | 2022-08-02 |
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EP4087727A1 (en) | 2022-11-16 |
US20210206141A1 (en) | 2021-07-08 |
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