TW202344729A - 用於改進的產品遞送的化妝品片材掩模 - Google Patents
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- TW202344729A TW202344729A TW112107126A TW112107126A TW202344729A TW 202344729 A TW202344729 A TW 202344729A TW 112107126 A TW112107126 A TW 112107126A TW 112107126 A TW112107126 A TW 112107126A TW 202344729 A TW202344729 A TW 202344729A
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Abstract
非織造織物可以製成局部遞送系統，其具有增加的和可控的產品釋放速率，同時仍具有大規模生產和分配所需的強度和耐久性。這樣的釋放系統包含由微旦尼爾纖維製成的織物，所述微旦尼爾纖維通過原纖化雙組分海島纖維而生產。由這些織物製成的面膜可以在3-5分鐘或更短時間內實現足夠的產品遞送。
Description
本發明涉及非織造織物，及其作為化妝品和個人護理產品的局部遞送體系的用途。更具體地講，本發明涉及由非織造織物製成的片材掩模(包括貼片)。
化妝品和個人護理片材掩模普遍用於將產品遞送到面部和身體的其它區域。典型地，對於片材掩模建議的保留持續時間是10-30分鐘。需要該時間以允許顯著劑量浸漬在掩模中的產品轉移到皮膚。而且，當掩模在皮膚上時，使用者可以體驗舒適的清涼感覺。然而，必須佩戴片材掩模(例如面膜)10-30分鐘對於繁忙的消費者來說可能是不方便的，所述消費者將受益於在短得多的時間內從片材面模中得到最多的量。此外，通常，產品從常規片材掩模的釋放速率與皮膚的吸收速率不匹配。當未吸收的產品暴露於環境大氣時，發生降解，例如蒸發損失。結果是，通常將額外的產品浸漬到掩模中以確保使用者將接收足夠的劑量。這增加了成本和浪費。由於這些和其它原因，仍然需要可以在顯著少於10分鐘內遞送一定劑量的水性產品的化妝品片材掩模。從片材織物釋放水性產品的速率主要取決於織物的孔隙率。通常，如果纖維密度和/或纖維尺寸減小，則孔隙率(和釋放速率)將增加，但由這些較小纖維製成的織物的完整性受損，並且可能不具有所需的強度和耐久性。因此，本發明所解決的一個挑戰是如何製備化妝品片材掩模，其具有增加的和可控的釋放速率，同時仍具有大規模生產和分配所需的強度和耐久性。
用於製造美容片材掩模的不同織物具有不同的流體處理性質，例如織物可以保持的流體製劑的量、釋放到皮膚中的速率和蒸發損失。這些性質還取決於給定織物內的纖維(結構)的排列。例如，纖維素織物(例如棉和人造絲)可以吸收高達其品質的8倍，而聚酯(PET)織物可能僅保持其品質的一倍或兩倍。在纖維素織物中，流體駐留在織物纖維之間的空間(孔)中，以及駐留在單獨的纖維的孔中。在聚酯織物中，流體不能滲透到單獨的纖維中，而是僅駐留在纖維之間的空間(孔)中。
另一類織物是非織造織物。非織造織物是通過用若干方式中的任何一種使纖維纏結而結合在一起的纖維排列，所述方式包括機械、熱和化學方式。非織造材料可以是纖網、墊、棉絮和片材的形式。非織造材料的性質將部分取決於原材料選擇以及網成形、黏結和整理的工藝。US3,338,992是早期嘗試由連續合成纖維生產非織造網的一個實例。如本文所用，“纖維”是具有高縱橫比(長度/直徑)的結構。雖然沒有普遍的一致性，我們使用“微纖維”的定義作為直徑為約0.5-5μ，並且線性品質密度小於1旦尼爾(den) (其中旦尼爾定義為每9000米的纖維克數)的材料。與微纖維相比，“納米纖維”我們定義為直徑小於約0.5μ，具有相對高的表面積體積比和高孔隙率。“微旦尼爾”纖維我們是指小於1旦的纖維。“短纖維”是指相對短的、確定長度的纖維，而“長絲纖維”是具有非常高的縱橫比的較長的、有效連續的纖維。
存在多種技術用於生產最終構成非織造織物的纖維。“多組分纖維”由兩種或更多種材料(例如不同的合成聚合物)製造。由多組分纖維製成的織物受益於具有來自各單獨的纖維組分的特性。或者，在生產多組分纖維之後，有時有用的是將組分纖維彼此分離以用於單獨的加工。微旦尼爾纖維通常以這種方式生產。普通的分離技術可以分類為機械的或溶劑基的(例如：溶解一種類型的纖維而留下另一種纖維，或溶脹纖維以分離它們)。
“雙組分纖維”由兩種具有不同化學和物理性質的聚合物組成。通常，兩種聚合物從同一噴絲頭共擠出以形成單個長絲，其中兩種聚合物沿細介面描繪。以這種方式成功地加工兩種不同原料所必需的參數(例如：聚合物流體的黏度、可拉伸性、與紡絲方法的相容性)是本領域已知的。雙組分纖維的若干幾何排列是常見的。這些中的一些在本領域中已知為並排、分段的餅狀、分段的帶狀、分段的十字形、尖端的三葉形、並排的蝴蝶結、芯-鞘和海島。本發明採用由特定技術製成的海島織物。
通常，海島纖維包含許多放置在另一種聚合物(海)的基質中的一種聚合物(島)的小長絲。US6,455,156公開了一種用於製備這類雙組分纖維的技術。然而，在該方法中，必須使用鹼溶液來溶解海基質，以到達島纖維(其不受鹼溶液的不利影響)。使用對環境不友好的鹼溶液是該方法的缺點，同時還將可以用於島組分的聚合物限制為不受鹼溶液不利影響的那些。
US7,981,226和US8,420,556 (通過引用以其整體併入本文)公開了一種通過原纖化雙組分纖維由微旦尼爾、海島纖維製造高強度、高表面積非織造織物的方法。結果是，島組分從海基質中釋放。通常，海組分足夠弱，使得它可以通過水力纏結而原纖化，並且島組分和海組分必須彼此具有很小或不具有親和力；也就是說，它們必須是不相容的。不相容性定義為“兩種纖維組分在兩者之間形成清晰的介面，使得一種不擴散到另一種中”。然而，如在‘226和‘556中所解釋的，“本發明的關鍵特徵在於原纖化時海纖維與島纖維纏繞和纏結。因此，雖然可以以微米和納米水準製造島纖維，海組分也在形成海組分的微米纖維和納米纖維的各纖維之間分離。因此，海纖維和島纖維由單一的雙組分纖維生產連續的微米纖維和納米纖維。而且，在纖維保持其結構完整性的情況下，它們能夠在它們自身中纏繞和纏結，形成高強度纖維。”
如在US7,981,226和US8,420,556中進一步解釋的，在原纖化之前，外部纖維包裹內部纖維，並且結果是，在外部纖維固化之前，內部纖維固化。這促進非常強的島纖維，然後可以通過原纖化或其它外部能量將其與海纖維分離。在該方法中，內部島纖維和外部海纖維兩者都保持為連續纖維，並且隨後在各種纖維之間形成黏合。“這促進本發明的高強度方面，即使相應的纖維本身處於微米和納米水準。”
US7,981,226和US8,420,556也公開了如果用於原纖化的外部能量以通過水噴射的水力纏結方法的形式提供，則是優選的。為了使其起作用，內部島纖維和外部海纖維兩者都必須不溶於水。為此，如果要使用水力纏結或如果纖維將用於濕法應用的織物，將不能使用PVA，PVA是在常規海島纖維結構中常用的材料。水力纏結通常用雙組分纖維在網上進行，並且可以產生約0.5微米或更小的微旦尼爾纖維。以這種方式生產的長絲纖維可以被結合到可以通過紡黏形成的非織造織物中。或者，短纖維可以形成為網並通過若干已知方法中的任何一種黏合。這樣生產的非織造織物據說可以用於製造帳篷、降落傘、戶外織物、房屋包裹物、遮篷、篩檢程式、抹布、清潔布和紡織品。根據‘226和‘556，島纖維和海纖維可以包含熱塑性聚合物，例如尼龍6、尼龍6/6、尼龍6,6/6、尼龍6/10、尼龍6/11、尼龍6/12、聚丙烯、聚乙烯、聚酯、共聚酯、共聚醚酯彈性體、聚烯烴、聚丙烯酸酯和熱塑性液晶聚合物。此外，熱塑性聚合物可以包含共聚醚酯彈性體，其具有通過酯鍵頭尾結合的長鏈醚酯單元和短鏈酯單元。
據我們所知，如下文所述的非織造織物從未用於生產將產品快速釋放到皮膚中的化妝品或個人護理片材掩模。
發明目的
本發明的主要目的是局部遞送系統，例如化妝品或個人護理片材掩模，具有增加的和可控的釋放速率，同時仍具有大規模生產和分配所需的強度和耐久性。
本發明的另一個目的是提供局部遞送系統，例如化妝品或個人護理片材掩模，其可以在10分鐘或更短時間內(例如3-5分鐘或更短時間內)實現足夠的產品釋放。
我們描述了用於改進的產品遞送的非織造局部遞送體系，例如化妝品或個人護理片材掩模。這些局部遞送系統包含由微旦尼爾纖維製成的織物，所述微旦尼爾纖維通過原纖化雙組分海島纖維而生產。通過使用噴射條的水力纏結進行原纖化，其中噴射與噴射的間距在600μ至2400μ的範圍內。選擇纖維的材料和其它相關參數以提供具有可控的產品釋放速率的耐久的局部遞送系統。
我們已經發現，由微旦尼爾纖維製成的某些織物在局部遞送領域(尤其是化妝品片材掩模)中特別有用，用於改進的產品遞送。我們描述了定制的海島方法，以生產具有某些定義的參數值的織物。用於本文所述應用的聚合物材料(島組分/海組分)的特別有利的組合包括：聚醯胺6/聚乳酸；聚醯胺6/聚乙烯；聚丙烯/聚乳酸，但是本發明不限於這些組合。在本發明的優選的實施方案中，島組分聚合物與海組分聚合物的重量比在約1:4至約1:6之間。例如，島組分聚合物可以構成雙組分纖維的約15-20重量%，而海組分構成80-85重量%。我們的觀察結果是，由這樣的織物製成的掩膜在局部遞送流體產品方面是優越的。當使用優選的噴射與噴射的間距進行水力纏結步驟時，尤其如此。優選的噴射與噴射的間距在約600μ-2400μ的範圍內，水壓為10巴至1,000巴。如果噴射與噴射的間距小於約600μ，則所得織物太薄且太緻密而不能有效地釋放液體產品，使得不能在小於10分鐘內遞送全部劑量的產品。另一方面，如果噴射間距大於約2400μ，則纖維可能分離，使得織物失去機械完整性。使用優選的島與海的比率和優選的噴射與噴射的間距，我們已經注意到“甜區”，其中織物保持足以用於本文預期的應用的機械完整性，同時仍然能夠有效地釋放液體產品。在該甜區內生產的織物的基重為約30g/m
2-100g/m
2，優選約80g/m
2-100g/m
2。根據本發明製造的非織造織物也具有獨特的“絎縫”結構，其提供與由其它方法製造的織物的視覺區別。
同樣重要的是纖維填充密度(也稱為固體體積分數)。纖維填充密度是纖維所占體積與織物體積的比率。本發明的優選的織物的纖維填充密度為約5%-30%，這意味著大多數片材是空的空間。然而，當所有其它參數如本文所規定時，所得織物對於本文預期的應用足夠強和耐用。
當應用為化妝品片材掩模時，為了將液體組合物遞送至皮膚表面，則用液體組合物浸漬掩膜。給定以上規定的填充密度，可以浸漬到掩膜中的液體組合物的重量通常在掩膜重量的2-8倍的範圍內。同時，規定的填充密度使得產品能夠快速轉移到目標表面。因此，我們能夠生產在3-5分鐘或更短時間內將一定劑量的產品遞送至目標表面的化妝品片材掩模。如上所述，對於目前市場上的化妝品片材掩模，建議的保留持續時間為10-30分鐘並非罕見。這是將全部劑量的產品轉移到皮膚表面所需的時間量。相反，我們已發現，使用本文規定的參數，由海島非織造織物製成的化妝品片材掩模可以在3-5分鐘內(優選少至3分鐘內)實現類似或優越的結果，同時實現大規模生產、分配和使用掩膜所需的強度和耐久性。
任選地，島組分和海組分中的一者或兩者可以由可持續材料製成。可用的可持續材料的實例包括：聚乙烯醇、聚丁二酸丁二醇酯、回收的聚乙烯、回收的聚丙烯、回收的聚酯或共聚酯。任選地，島組分和海組分中的一者或兩者可以由生物基材料而不是化石衍生的材料製成。這樣的材料包括例如衍生自甘蔗的聚乙烯和衍生自蓖麻油的聚醯胺。由生物基材料製成的織物(尤其是一次性物品，如化妝品片材掩模)通常對環境和長期可持續性更好。
根據本發明的化妝品片材掩模(包括貼片)可以通過用一種或多種用於處理皮膚的皮膚護理製劑浸漬海島非織造織物來製備。根據上述填充密度，可以浸漬到片材掩模中的一種或多種製劑的總重量通常在掩膜重量的2-8倍的範圍內。浸漬片材掩模可以通過本領域已知的任何合適的方式來完成。這樣的化妝品片材掩模可以用於處理各種皮膚狀況。片材掩模可以被構造成符合使用者皮膚的預定處理區域，例如面部、頸部、腹部或四肢或其任何部分。例如，完整的面膜通常從前額的發線延伸到下巴，並且從耳朵延伸到耳朵，並且提供有用於眼睛、鼻子和嘴的孔。部分面膜可以成形為施用於眼睛下區域，或施用於產生魚尾紋的眼睛的側面區域，在產生皺眉紋的嘴周圍，或鼻的T區。化妝品片材的確切尺寸和形狀將取決於預期用途和產品特性。化妝品片材將具有足夠的柔性，並且其尺寸和形狀適於與使用者皮膚的期望的處理區域相一致。當將片材掩模施用於皮膚並符合皮膚輪廓時，它們可以向皮膚遞送預定劑量的一種或多種用於處理皮膚的皮膚護理製劑。
製劑可以包含一種或多種皮膚有益劑。皮膚有益劑可以選自：抗皺或皮膚緊致劑；抗老化劑；保濕劑；皮膚增白或脫色素劑；抗炎劑；抗痤瘡劑；DNA修復劑；皮膚脂質屏障修復劑；抗蜂窩組織劑；傷口癒合劑；妊娠紋/疤痕去除劑；膨脹劑；毛髮生長阻滯劑；毛髮生長刺激劑；黑眼圈減少或消腫劑；膠原合成或血液迴圈增強劑；抗氧化劑；皮脂控制劑；和孔隙最小化劑。皮膚有益劑可以是帶電的或中性的。示例性抗皺劑包括但不限於乙醯基六肽-8、棕櫚醯基寡肽、二肽二氨基丁醯基、苄基醯胺二乙酸酯等。示例性皮膚緊致劑包括但不限於藻類提取物、支鏈澱粉、甜杏仁籽提取物、卡波姆、棕櫚醯寡肽、棕櫚醯四肽-7、栓皮櫟(
Quercus suber)提取物等。示例性抗老化劑包括但不限於替普瑞酮、白藜蘆醇三磷酸三鈉、虎杖(
Polygonum cuspidatum)根提取物、乳清蛋白等。示例性保濕劑包括但不限於透明質酸、甘油、尿素、海藻糖等。示例性皮膚增白或脫色素劑包括但不限於抗壞血酸、抗壞血酸磷酸鎂、氨基丙基抗壞血酸磷酸酯、桑樹根提取物、黃芩(
Scutellaria baicalensis)提取物、葡萄提取物、阿魏酸、扁柏醇等。示例性抗炎劑包括但不限於卷柏提取物、海狗鞭提取物、虎杖根提取物等。示例性抗痤瘡劑包括但不限於水楊酸、乙醇酸、乳糖酸等。示例性DNA修復劑包括但不限於C1-C8烷基四羥基環己酸酯、微球菌裂解物、二裂酵母發酵裂解物等。示例性皮膚脂質屏障修復劑包括但不限於植物鞘氨醇、亞油酸、膽固醇等。示例性抗蜂窩組織劑包括但不限於毛喉鞘蕊花(
Coleus forskohlii)根提取物、荷花玉蘭(
Magnolia grandiflora)樹皮提取物、
Nelubo nucifera葉提取物等。示例性傷口癒合劑包括但不限於細花含羞草(
Mimosa tenuiflora)樹皮提取物、大豆蛋白等。示例性膨脹劑包括但不限於酵母/木醋桿菌紅茶發酵物、知母(
Anemarrhena asphodeloides)根提取物、透明質酸鈉等。示例性毛髮生長阻滯劑包括但不限於熊果酸、植物鞘氨醇、齒葉乳香(
Boswella serrata)提取物等。示例性毛髮生長刺激劑包括但不限於鋸葉棕(
Serenoa serrulata)果實提取物、甘草提取物、乙醯葡糖胺等。示例性黑眼圈減少或de-puffing agent包括但不限於橙皮苷甲基查耳酮、二肽-2、西番蓮(
Passiflora incarnate)花提取物、亞油酸、異亞油酸等。示例性膠原合成或血液迴圈增強劑包括但不限於精氨酸、泡葉藻(
Ascophyllum nodosum)提取物、次海門東(
Asparagopsis armata)提取物、咖啡因等。示例性抗氧化劑包括但不限於去甲二氫愈創木酸、葡萄籽提取物、綠茶葉提取物等。
Claims (11)
- 由雙組分海島纖維製成的海島非織造織物，其中： 所述雙組分海島纖維包含： 由第一聚合物材料製成的島纖維； 由第二聚合物材料製成的海纖維；和 通過水噴射使所述海纖維和島纖維纏結，其中噴射與噴射的間距為600µ-2400µ。
- 根據請求項1所述的海島非織造織物，其中： 所述第一聚合物材料為聚醯胺6，並且所述第二聚合物材料為聚乳酸，或者 所述第一聚合物材料為聚醯胺6，並且所述第二聚合物材料為聚乙烯，或者 所述第一聚合物材料為聚丙烯，並且所述第二聚合物材料為聚乳酸。
- 根據請求項1所述的海島非織造織物，其中： 所述第一聚合物材料、第二聚合物材料或兩者選自聚乙烯醇、聚丁二酸丁二醇酯、回收的聚乙烯、回收的聚丙烯、回收的聚酯、共聚酯、衍生自甘蔗的聚乙烯和衍生自蓖麻油的聚醯胺。
- 根據請求項1所述的海島非織造織物，其中所述第一聚合物材料與所述第二聚合物材料的重量比在1:4至1:6之間。
- 根據請求項1所述的海島非織造織物，其中所述非織造織物的纖維填充密度為5%-30%。
- 根據請求項1所述的海島非織造織物，其中所述島纖維和海纖維為微旦尼爾纖維，並且所述織物的基重為30g/m 2-100g/m 2。
- 用於將液體組合物遞送至皮膚表面的片材掩模，所述片材掩模包含由雙組分海島纖維製成的海島非織造織物，其中： 所述雙組分海島纖維包含： 由第一聚合物材料製成的島纖維； 由第二聚合物材料製成的海纖維；和 通過水噴射使所述海纖維和島纖維纏結； 所述非織造織物用所述液體組合物浸漬。
- 根據請求項7所述的片材掩模，其中所述水噴射以噴射與噴射的間距為600µ-2400µ進行。
- 根據請求項7所述的片材掩模，其中所述非織造織物被構造成符合使用者皮膚的預定處理區域，例如面部、頸部、腹部、四肢或其任何部分。
- 根據請求項9所述的片材掩模，其中所述非織造織物中的液體組合物的重量是所述非織造織物重量的2-8倍。
- 根據請求項9所述的片材掩模，其被構造為完整的面膜。
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2022
- 2022-03-01 US US17/652,996 patent/US20230279590A1/en active Pending
-
2023
- 2023-02-22 WO PCT/US2023/063079 patent/WO2023168178A1/en unknown
- 2023-02-24 TW TW112107126A patent/TW202344729A/zh unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US20230279590A1 (en) | 2023-09-07 |
| WO2023168178A1 (en) | 2023-09-07 |
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