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    • 4. 发明申请
    • Uniaxially oriented articles having structured surface
    • 具有结构化表面的单轴取向制品
    • US20060141218A1
    • 2006-06-29
    • US11184024
    • 2004-12-23
    • Rolf BiernathOlester BensonAndrew OuderkirkWilliam MerrillDavid KowitzCatherine TarnowskiRobert Brott
    • Rolf BiernathOlester BensonAndrew OuderkirkWilliam MerrillDavid KowitzCatherine TarnowskiRobert Brott
    • B32B3/00
    • B29C55/04G02B5/1833G02B5/3083Y10T428/24479
    • Uniaxially Oriented Articles Having Structured Surface A process for uniaxially stretching films is having a structured surface comprising a geometric feature is described. The process provides a film in which the cross sectional shape of the feature after stretching is substantially identical to the cross sectional shape of the feature prior to stretching. Structured surface articles are also described. The articles have substantially the same uniaxial orientation throughout the film, including the geometric structure. Uniaxially oriented articles having structured surfaces are described. The articles have dimensional relationships as follows: the (a) ratio of the thickness of the body (Z′) to the height of the geometric feature (P′) is at least about 2; or (b) the ratio of body thickness to feature height (Z′:P′) is at least about 1 and the ratio of feature height to feature separation (P′:FS′) is at least about 1; or (c) the ratio of body thickness to feature height (Z′:P′) is at least about 1 and the ratio of feature base width to feature separation (BW′:FS′) is at least about 1; or (d) the ratio of body thickness to feature base width (Z′:BW′) is at least about 3; or (e) the ratio of body thickness to feature base width (Z′:BW′) is at least about 1 and the ratio of feature height to feature separation (P′:FS′) is at least about 1; or (f) the ratio of body thickness to feature base width (Z′:BW′) is at least about 1 and the ratio of feature base width to feature separation (BW′:FS′) is at least about 1; or (g) the ratio of feature base width to feature top width (BW′:TW′) is at least about 2 and the ratio of feature base width to feature separation (BW′:FS′) is at least about 1.
    • 具有结构化表面的单轴定向制品用于单轴拉伸膜的方法具有包括几何特征的结构化表面。 该方法提供了拉伸后的特征的横截面形状与拉伸前的特征的横截面形状基本相同的膜。 还描述了结构化表面制品。 制品在整个薄膜中具有基本相同的单轴取向,包括几何结构。 对具有结构化表面的单轴取向制品进行说明。 制品的尺寸关系如下:(a)身体(Z')的厚度与几何特征(P')的高度之比至少为2; 或(b)身体厚度与特征高度之比(Z':P')至少约为1,特征高度与特征分离比(P':FS')至少约为1; 或(c)身体厚度与特征高度之比(Z':P')至少约为1,特征基本宽度与特征分离(BW':FS')之比至少为1; 或(d)体厚与特征基准宽度(Z':BW')的比值至少为3; 或(e)身体厚度与特征基准宽度(Z':BW')的比值至少约为1,特征高度与特征分离比(P':FS')至少约为1; 或(f)身体厚度与特征基准宽度(Z':BW')的比值至少约为1,特征基础宽度与特征分离(BW':FS')之比至少为1; 或(g)特征基本宽度与特征顶部宽度(BW':TW')的比率至少约为2,并且特征基本宽度与特征分离(BW':FS')的比率至少为约1。
    • 6. 发明申请
    • Uniaxially oriented birefringent article having a structured surface
    • 具有结构化表面的单轴取向双折射制品
    • US20060204720A1
    • 2006-09-14
    • US11184022
    • 2004-12-23
    • Rolf BiernathWilliam MerrillAndrew OuderkirkOlester BensonDavid KowitzCatherine TarnowskiRobert Brott
    • Rolf BiernathWilliam MerrillAndrew OuderkirkOlester BensonDavid KowitzCatherine TarnowskiRobert Brott
    • B32B3/00
    • C08J5/18Y10T428/24479
    • An article, such as a film, comprising a body portion and a surface portion is provided. The body portion has (i) a first and a second surface, and (ii) first and second in-plane axes that are orthogonal with respect to each other and a third axis that is mutually orthogonal to the first and second in-plane axis in a thickness direction of the body. The surface portion comprises a linear geometric feature disposed on the first surface of the body in a direction substantially parallel to the first in-plane axis of the polymeric body. The article has (i) a first index of refraction (n1) along the first in-plane axis, (ii) a second index of refraction (n2) along the second in-plane axis, and (iii) a third index of refraction (n3) along the third axis, wherein n2 and n3 are substantially the same but substantially different from n1; and wherein the uniaxially oriented polymeric film has a relative birefringence of 0.3 or less and wherein the ratio of the thickness of the body to the height of the geometric feature is at least 2.
    • 提供了包括主体部分和表面部分的诸如胶片的物品。 主体部分具有(i)第一和第二表面,以及(ii)彼此正交的第一和第二平面轴线以及与第一和第二平面轴线相互正交的第三轴线 在身体的厚度方向上。 表面部分包括在基本上平行于聚合物主体的第一平面轴线的方向上设置在主体的第一表面上的线性几何特征。 该物品具有(i)沿着第一面内轴线的第一折射率(n <1> 1),(ii)沿着第一平面轴线的第二折射率(n <2 ) 第二面内轴线,以及(iii)沿着第三轴线的第三折射率(n 3/3),其中n 2和n 3 < SUB>基本上相同但是与n 1个基本不同; 并且其中所述单轴取向聚合物膜具有0.3或更小的相对双折射,并且其中所述主体的厚度与所述几何特征的高度之比至少为2。