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1. 发明申请

WO2009024837A1 METHOD FOR FORMING POLYLACTIC ACID FIBERS 审中-公开
标题翻译：形成聚酰亚胺纤维的方法
公开(公告)号：WO2009024837A1
公开(公告)日：2009-02-26
申请号：PCT/IB2007/053353
申请日：2007-08-22
申请人： KIMBERLY-CLARK WORLDWIDE, INC. , HE, Aimin , WIDEMAN, Gregory, J. , TOPOLKARAEV, Vasily, A.
发明人： HE, Aimin , WIDEMAN, Gregory, J. , TOPOLKARAEV, Vasily, A.
IPC分类号： D01F6/92
CPC分类号： D01F6/92 , D01F1/10
摘要： A method of forming a polylactic acid fiber that involves the use of a macrocyclic ester oligomer to improve the crystallization properties of polylactic acid is provided. Without intending to be limited by theory, it is believed that the macrocyclic ester oligomer undergoes a ring-opening reaction during melt processing and thus converts to a low molecular weight linear crystal structure. These linear crystals may act as a nucleating "seed" for increasing the degree and rate of crystallization of polylactic acid, which improves its ability to be formed into fibers and webs. That is, polymers having a higher degree of melt and crystallization enthalpy are more readily able to bond at higher speeds and also have a lower degree of shrinkage, thereby improving web stability, tensile strength, and web aesthetics.
摘要翻译：提供了一种形成包含使用大环酯低聚物以改善聚乳酸的结晶性能的聚乳酸纤维的方法。不期望受理论的限制，相信大环酯低聚物在熔融加工过程中经历开环反应，因此转化为低分子量线性晶体结构。这些线性晶体可以作为成核“种子”，用于增加聚乳酸的结晶度和速率，这提高了其形成纤维和纤维网的能力。也就是说，具有较高熔体和结晶焓的聚合物更容易能够以更高的速度粘合并且还具有较低的收缩率，从而提高幅材稳定性，拉伸强度和纤维网美观性。

2. 发明申请

WO2009150553A2 FIBERS FORMED FROM AROMATIC POLYESTER AND POLYETHER COPOLYMER 审中-公开
标题翻译：从芳族聚酯和聚醚共聚物形成的纤维
公开(公告)号：WO2009150553A2
公开(公告)日：2009-12-17
申请号：PCT/IB2009/051572
申请日：2009-04-15
申请人： KIMBERLY-CLARK WORLDWIDE, INC. , HE, Aimin , TOPOLKARAEV, Vasily, A. , WRIGHT, Alan, E. , WIDEMAN, Gregory, J.
发明人： HE, Aimin , TOPOLKARAEV, Vasily, A. , WRIGHT, Alan, E. , WIDEMAN, Gregory, J.
IPC分类号： D01F6/84 , D04H1/42
CPC分类号： D01F6/62 , C08F283/01 , C08L67/02 , C08L71/02 , D01F6/66 , D04H1/56 , D04H1/565 , Y10T442/60 , Y10T442/68 , Y10T442/681 , Y10T442/696 , C08L2666/22
摘要： A method for forming a fiber is provided. The method comprises supplying at least one aromatic polyester to a melt processing device and modifying the aromatic polyester with at least one polyether copolymer within the device to form a thermoplastic composition having a melt flow rate that is greater than the melt flow rate of the aromatic polyester. The polyether copolymer contains a repeating unit (A) having the following formula (A) wherein, x is an integer from 1 to 250, the polyether copolymer further containing a repeating unit (B) having the following formula (B) wherein, n is an integer from 3 to 20; and y is an integer from 1 to 150.
摘要翻译：提供了一种形成纤维的方法。该方法包括向熔融加工装置供应至少一种芳族聚酯，并在装置内用至少一种聚醚共聚物改性芳族聚酯以形成熔体流动速率大于芳族聚酯的熔体流动速率的热塑性组合物。聚醚共聚物含有具有下式（A）的重复单元（A），其中x为1〜250的整数，聚醚共聚物还含有具有下式（B）的重复单元（B），其中n为 3到20的整数; y为1〜150的整数。

3. 发明申请

WO2009024836A1 MULTICOMPONENT BIODEGRADABLE FILAMENTS AND NONWOVEN WEBS FORMED THEREFROM 审中-公开
标题翻译：多组分可生物降解胶片和非织造布
公开(公告)号：WO2009024836A1
公开(公告)日：2009-02-26
申请号：PCT/IB2007/053351
申请日：2007-08-22
申请人： KIMBERLY-CLARK WORLDWIDE, INC. , HE, Aimin , WANG, James, H. , TOPOLKARAEV, Vasily, A. , WIDEMAN, Gregory, J. , PALFERY, Doris
发明人： HE, Aimin , WANG, James, H. , TOPOLKARAEV, Vasily, A. , WIDEMAN, Gregory, J. , PALFERY, Doris
IPC分类号： D01F8/14
CPC分类号： D01F8/14 , A61F13/15252 , B32B5/16 , B32B27/12 , B32B27/36 , B32B2307/7163 , D01F6/92 , D04H3/03 , D04H3/16 , D04H13/00 , Y10T428/2929 , Y10T442/697
摘要： A biodegradable, substantially continuous filament is provided. The filament contains a first component formed from at least one high melting polyester and a second component formed from at least one low melting polyester. The low melting point polyester is an aliphatic-aromatic copolyester formed by melt blending a polymer and an alcohol to initiate an alcoholysis reaction that results in a copolyester having one or more hydroxyalkyl or alkyl terminal groups. By selectively controlling the alcoholysis conditions (e.g., alcohol and copolymer concentrations, catalysts, temperature, etc.), a modified aliphatic-aromatic copolyester may be achieved that has a molecular weight lower than the starting aliphatic-aromatic polymer. Such lower molecular weight polymers also have the combination of a higher melt flow index and lower apparent viscosity, which is useful in the formation of substantially continuous filaments.
摘要翻译：提供了可生物降解的，基本连续的细丝。长丝包含由至少一种高熔点聚酯形成的第一组分和由至少一种低熔点聚酯形成的第二组分。低熔点聚酯是通过熔融共混聚合物和醇以引发醇解反应形成的脂族 - 芳族共聚酯，其导致共聚酯具有一个或多个羟烷基或烷基端基。通过选择性地控制醇解条件（例如醇和共聚物浓度，催化剂，温度等），可以实现具有低于起始脂族 - 芳族聚合物的分子量的改性脂族 - 芳族共聚酯。这种低分子量聚合物还具有较高的熔体流动指数和较低的表观粘度的组合，其可用于形成基本连续的长丝。

4. 发明申请

WO2007070064A1 BIODEGRADABLE MULTICOMPONENT FIBERS 审中-公开
标题翻译：可生物降解的多组分纤维
公开(公告)号：WO2007070064A1
公开(公告)日：2007-06-21
申请号：PCT/US2005/046178
申请日：2005-12-15
申请人： KIMBERLY - CLARK WORLDWIDE, INC. , CHAKRAVARTY, Jayant , TOPOLKARAEV, Vasily, A. , WIDEMAN, Gregory, J.
发明人： CHAKRAVARTY, Jayant , TOPOLKARAEV, Vasily, A. , WIDEMAN, Gregory, J.
IPC分类号： D01F8/14
CPC分类号： D01F8/14 , A61F13/15252 , B32B5/022 , B32B5/08 , B32B5/26 , B32B27/12 , B32B2262/0276 , B32B2262/12 , B32B2307/54 , B32B2307/7163 , B32B2307/726 , B32B2307/728 , B32B2535/00 , B32B2555/02 , D04H1/541 , D04H3/147 , D04H3/16 , D04H13/00 , Y10T428/2929 , Y10T442/60 , Y10T442/637 , Y10T442/638 , Y10T442/641 , Y10T442/671 , Y10T442/696
摘要： A multicomponent fiber that contains a high-melting aliphatic polyester and a low-melting aliphatic polyester is provided. The multicomponent fibers are substantially biodegradable, yet readily processed into nonwoven structures that exhibit effective fibrous mechanical properties.
摘要翻译：提供含有高熔点脂肪族聚酯和低熔点脂肪族聚酯的多组分纤维。多组分纤维基本上是可生物降解的，但易于加工成具有有效的纤维力学性能的非织造结构。

5. 发明申请

WO2012020336A2 TOUGHENED POLYLACTIC ACID FIBERS 审中-公开
标题翻译：增韧聚酰胺纤维
公开(公告)号：WO2012020336A2
公开(公告)日：2012-02-16
申请号：PCT/IB2011/053010
申请日：2011-07-06
申请人： KIMBERLY-CLARK WORLDWIDE, INC. , TOPOLKARAEV, Vasily, A. , ZHOU, Peiguang , WIDEMAN, Gregory, J. , EBY, Tom , MCENEANY, Ryan, J.
发明人： TOPOLKARAEV, Vasily, A. , ZHOU, Peiguang , WIDEMAN, Gregory, J. , EBY, Tom , MCENEANY, Ryan, J.
IPC分类号： D01F6/62 , D01F1/10 , D01F6/92 , D04H1/42 , D01D5/08
CPC分类号： D04H3/009 , B29K2067/043 , B29K2067/046 , B29K2105/0088 , B29K2995/006 , C08L67/04 , D01F6/625 , D01F6/92 , Y10T428/26 , Y10T428/298 , Y10T442/626 , C08L101/00 , C08L23/00
摘要： Polylactic acid fibers formed from a thermoplastic composition that contains polylactic acid and a polymeric toughening additive are provided. The present inventors have discovered that the specific nature of the components and process by which they are blended may be carefully controlled to achieve a composition having desirable morphological features. More particularly, the toughening additive can be dispersed as discrete physical domains within a continuous phase of the polylactic acid. These domains have a particular size, shape, and distribution such that upon fiber drawing, they absorb energy and become elongated. This allows the resulting composition to exhibit a more pliable and softer behavior than the otherwise rigid polylactic acid. Through selective control over the components and method employed, the present inventors have discovered that the resulting fibers may thus exhibit good mechanical properties, both during and after melt spinning.
摘要翻译：提供由含有聚乳酸和聚合物增韧添加剂的热塑性组合物形成的聚乳酸纤维。本发明人已经发现，可以仔细地控制组分的具体性质和它们混合的方法，以获得具有所需形态特征的组合物。更具体地，增韧添加剂可以作为离散物理区域分散在聚乳酸的连续相中。这些区域具有特定的尺寸，形状和分布，使得在纤维拉伸时，它们吸收能量并变细。这使得所得组合物表现出比其它刚性聚乳酸更柔软和柔软的特性。通过选择性地控制所使用的组分和方法，本发明人已经发现，所得到的纤维可能在熔融纺丝期间和之后都显示出良好的机械性能。

6. 发明申请

WO2010070469A2 BIODEGRADABLE AND RENEWABLE FILM 审中-公开
标题翻译：可生物降解和可再生膜
公开(公告)号：WO2010070469A2
公开(公告)日：2010-06-24
申请号：PCT/IB2009/054732
申请日：2009-10-26
申请人： KIMBERLY-CLARK WORLDWIDE, INC. , SHI, Bo , FUNK, Sara, A. , WANG, James, H. , WIDEMAN, Gregory, J. , KAUFMAN, Ross, T. , TOPOLKARAEV, Vasily, A.
发明人： SHI, Bo , FUNK, Sara, A. , WANG, James, H. , WIDEMAN, Gregory, J. , KAUFMAN, Ross, T. , TOPOLKARAEV, Vasily, A.
IPC分类号： C08J5/18 , C08L3/02 , C08L89/00 , C08J9/22
CPC分类号： A61L15/225 , A61L15/425 , A61L15/62 , B29C47/00 , B29C47/0026 , B29C55/005 , B29K2003/00 , B29K2105/04 , B29K2105/16 , B29K2995/006 , B32B5/022 , B32B9/02 , B32B27/08 , B32B27/12 , B32B27/20 , B32B27/22 , B32B27/30 , B32B27/32 , B32B27/36 , B32B27/40 , B32B37/153 , B32B2038/0028 , B32B2262/0238 , B32B2262/0246 , B32B2262/0253 , B32B2262/0261 , B32B2262/0276 , B32B2262/0292 , B32B2262/062 , B32B2305/20 , B32B2307/31 , B32B2307/7145 , B32B2307/7163 , B32B2307/724 , B32B2307/7265 , B32B2555/02 , C08J5/18 , C08J2300/16 , C08J2303/02 , C08L3/02 , C08L89/00 , Y10T428/24504 , Y10T442/282 , Y10T442/674 , C08L2666/26 , C08L89/02
摘要： A biodegradable and renewable film that may be employed in a wide variety of applications is provided. The film is formed from a thermoplastic composition that contains at least one starch and at least one plant protein. Even at a high renewable material content, the present inventors have discovered that films may be readily formed from plant proteins and starches by selectively controlling the individual amount of the starch and plant proteins, the nature of the starch and plant proteins, and other components used in the film. Balancing the amount of starches and plant proteins within a certain range, for instance, can reduce the likelihood of plant protein aggregation and enhance the ability of the composition to be melt processed. The composition also contains at least one plasticizer that improves the thermoplastic nature of the protein and starch components. The selection of the plasticizer may also help reduce the tendency of the plant protein to aggregate during melt processing. For example, a relatively acidic plasticizer (e.g., carboxylic acid) may be employed in certain embodiments to minimize the formation of disulfide bonds in a gluten protein, and thereby decrease its tendency to aggregate.
摘要翻译：提供了可用于各种应用的可生物降解和可再生的膜。该膜由含有至少一种淀粉和至少一种植物蛋白质的热塑性组合物形成。即使在高可再生材料含量下，本发明人也发现，通过选择性地控制淀粉和植物蛋白质的个体数量，淀粉和植物蛋白质的性质以及所使用的其它组分，可以容易地从植物蛋白质和淀粉形成膜在电影里。例如，将一定范围内的淀粉和植物蛋白质的量平衡可以降低植物蛋白质聚集的可能性并增加组合物被熔融加工的能力。该组合物还含有至少一种改善蛋白质和淀粉组分的热塑性质的增塑剂。增塑剂的选择也有助于降低植物蛋白质在熔融加工过程中聚集的趋势。例如，在某些实施方案中可以使用相对酸性的增塑剂（例如羧酸）以最小化谷蛋白中二硫键的形成，从而降低其聚集趋势。

7. 发明申请

WO2008073101A1 BIODEGRADABLE POLYLACTIC ACIDS FOR USE IN FORMING FIBERS 审中-公开
标题翻译：用于形成纤维的生物可降解聚酯酸
公开(公告)号：WO2008073101A1
公开(公告)日：2008-06-19
申请号：PCT/US2006/047867
申请日：2006-12-15
申请人： KIMBERLY-CLARK WORLDWIDE, INC. , TOPOLKARAEV, Vasily, A. , WIDEMAN, Gregory, J. , KAUFMAN, Ross, T. , WRIGHT, Alan, E. , KRUEGER, Jeffrey, J. , CHAKRAVARTY, Jayant
发明人： TOPOLKARAEV, Vasily, A. , WIDEMAN, Gregory, J. , KAUFMAN, Ross, T. , WRIGHT, Alan, E. , KRUEGER, Jeffrey, J. , CHAKRAVARTY, Jayant
IPC分类号： C08G63/00
CPC分类号： C08G63/912 , A61F13/15252 , B32B9/04 , C08L67/04 , C08L71/02 , D01D5/0985 , D01F6/625 , D01F6/92 , D01F8/14 , D04H3/011 , D04H3/02 , D04H3/03 , D04H3/153 , D04H3/16 , D04H5/03 , D04H5/06 , D04H5/08 , D04H13/00 , Y10T442/60 , Y10T442/68 , C08L2666/22
摘要： A method for forming a biodegradable polylactic acid suitable for use in fibers is provided. Specifically, a polylactic acid is melt processed at a controlled water content to initiate a hydrolysis reaction. Without intending to be limited by theory, it is believed that the hydroxyl groups present in water are capable of attacking the ester linkage of polylactic acids, thereby leading to chain scission or "depolymerization" of the polylactic acid molecule into one or more shorter ester chains. The shorter chains may include polylactic acids, as well as minor portions of lactic acid monomers or oligomers, and combinations of any of the foregoing. By selectively controlling the hydrolysis conditions (e.g., moisture and polymer concentrations, temperature, shear rate, etc.), a hydrolytically degraded polylactic acid may be achieved that has a molecular weight lower than the starting polymer. Such lower molecular weight polymers have a higher melt flow rate and lower apparent viscosity, which are useful in a wide variety of fiber forming applications, such as in the meltblowing of nonwoven webs.
摘要翻译：提供一种形成适用于纤维的可生物降解的聚乳酸的方法。具体地说，将聚乳酸以受控的水分进行熔融加工以引发水解反应。不期望受理论的限制，据信存在于水中的羟基能够攻击聚乳酸的酯键，从而导致聚乳酸分子链断裂或“解聚”成一个或多个较短酯链。较短的链可以包括聚乳酸，以及乳酸单体或低聚物的少量部分，以及前述任何一种的组合。通过选择性地控制水解条件（例如水分和聚合物浓度，温度，剪切速率等），可以实现分子量低于起始聚合物的水解降解聚乳酸。这种较低分子量的聚合物具有较高的熔体流动速率和较低的表观粘度，其可用于多种纤维形成应用中，例如在非织造纤维网的熔喷中。

8. 发明申请

WO2008073099A1 BIODEGRADABLE POLYESTERS FOR USE IN FORMING FIBERS 审中-公开
标题翻译：用于成型纤维的生物可降解聚酯
公开(公告)号：WO2008073099A1
公开(公告)日：2008-06-19
申请号：PCT/US2006/047852
申请日：2006-12-15
申请人： KIMBERLY-CLARK WORLDWIDE, INC. , TOPOLKARAEV, Vasily, A. , WIDEMAN, Gregory, J. , KAUFMAN, Ross, T. , WRIGHT, Alan, E. , KRUEGER, Jeffrey, J. , CHAKRAVARTY, Jayant
发明人： TOPOLKARAEV, Vasily, A. , WIDEMAN, Gregory, J. , KAUFMAN, Ross, T. , WRIGHT, Alan, E. , KRUEGER, Jeffrey, J. , CHAKRAVARTY, Jayant
IPC分类号： C08G63/00
CPC分类号： C08G63/916 , A61F13/15252 , B32B27/36 , D01D5/0985 , D01F6/625 , D01F6/92 , D04H3/011 , D04H3/03 , D04H3/153 , D04H3/16 , D04H13/00 , Y10T442/68
摘要： A method for forming a biodegradable polyester suitable for use in fibers is provided. Specifically, a biodegredable polyester is melt processed at a controlled water content to initiate a hydrolysis reaction. Without intending to be limited by theory, it is believed that the hydroxyl groups present in water are capable of attacking the ester linkage of the polyester, thereby leading to chain scission or "depolymerization" of the polyester molecule into one or more shorter ester chains. By selectively controlling the reaction conditions (e.g., water content, temperature, shear rate, etc.), a hydrolytically degraded polyester may be achieved that has a molecular weight lower than the starting polymer. Such lower molecular weight polymers have a higher melt flow rate and lower apparent viscosity, which are useful in a wide variety of fiber forming applications, such as in the meltblowing of nonwoven webs.
摘要翻译：提供一种形成适用于纤维的可生物降解聚酯的方法。具体地说，将可生物聚合的聚酯以受控的水含量熔融加工以引发水解反应。不期望受理论的限制，据信存在于水中的羟基能够攻击聚酯的酯键，从而导致聚酯分子链断裂或“解聚”成一个或多个较短的酯链。通过选择性地控制反应条件（例如水含量，温度，剪切速率等），可以获得具有低于起始聚合物的分子量的水解降解的聚酯。这种较低分子量的聚合物具有较高的熔体流动速率和较低的表观粘度，其可用于多种纤维形成应用中，例如在非织造纤维网的熔喷中。

9. 发明申请

WO2010070470A2 INJECTION MOLDING MATERIAL CONTAINING STARCH AND PLANT PROTEIN 审中-公开
标题翻译：含淀粉和植物蛋白的注射成型材料
公开(公告)号：WO2010070470A2
公开(公告)日：2010-06-24
申请号：PCT/IB2009/054733
申请日：2009-10-26
申请人： KIMBERLY-CLARK WORLDWIDE, INC. , WANG, James, H. , WIDEMAN, Gregory, J. , SHI, Bo , FUNK, Sara, A.
发明人： WANG, James, H. , WIDEMAN, Gregory, J. , SHI, Bo , FUNK, Sara, A.
IPC分类号： C08L3/02 , C08L89/00 , C08L101/00 , B29C45/00
CPC分类号： C08L23/06 , B29C45/0001 , B29K2105/16 , B29K2711/00 , B29K2995/006 , C08L1/00 , C08L3/00 , C08L3/02 , C08L23/02 , C08L23/04 , C08L23/10 , C08L89/00 , C08L2205/02 , C08L2207/066 , Y10T428/1348 , Y10T428/1352 , C08L2666/06 , C08L2666/26
摘要： An injection molding material that includes a renewable resin containing a combination of renewable polymers (e.g., starch and plant protein) and a plasticizer is provided. Although such compounds are normally difficult to process into thermoplastics, the present inventors have discovered that injection molding materials may nevertheless be formed by melt blending the renewable resin with a synthetic resin (e.g., polyolefin) while selectively controlling the nature of the resins and their relative concentrations. In this manner, a morphology may be achieved in which the renewable resin is present as a discontinuous phase that is dispersed within a continuous phase of the synthetic resin (e.g., "island-in-the-sea" morphology). The discontinuous and continuous phases may each constitute from about 30 vol.% to about 70 vol.%, and in some embodiments, from about 40 vol.% to about 60 vol.%. With such a morphology, the continuity of the synthetic resin can minimize the aggregate properties of the renewable resin such that the molding material possesses melt properties similar to that of the synthetic resin. Further, this morphology may also minimize the need to use different molding tools as the shrinkage properties of the overall composition may be substantially similar to that of the synthetic resin.
摘要翻译：提供包含含有可再生聚合物（例如淀粉和植物蛋白）和增塑剂的组合的可再生树脂的注塑材料。尽管这些化合物通常难以加工成热塑性塑料，但是本发明人已经发现注塑材料可以通过将可再生树脂与合成树脂（例如聚烯烃）熔融共混来形成，同时选择性地控制树脂及其相对性质浓度。以这种方式，可以实现可再生树脂作为分散在合成树脂的连续相内的不连续相（例如，“海中岛”形态）存在的形态。不连续相和连续相各自可以构成从约30体积％至约70体积％，并且在一些实施方案中从约40体积％至约60体积％。通过这样的形态，合成树脂的连续性可以使可再生树脂的聚集性能最小化，使得模制材料具有与合成树脂类似的熔融性质。此外，由于整个组合物的收缩性质可能与合成树脂的收缩性质基本相似，所以这种形态也可以最小化使用不同模塑工具的需要。

10. 发明申请

WO2009138886A2 WATER-SENSITIVE FILM CONTAINING AN OLEFINIC ELASTOMER 审中-公开
标题翻译：含有烯烃弹性体的水敏膜
公开(公告)号：WO2009138886A2
公开(公告)日：2009-11-19
申请号：PCT/IB2009/051331
申请日：2009-03-30
申请人： KIMBERLY-CLARK WORLDWIDE, INC. , SHI, Bo , WANG, James, H. , WIDEMAN, Gregory, J.
发明人： SHI, Bo , WANG, James, H. , WIDEMAN, Gregory, J.
IPC分类号： C08J5/18 , C08L29/04 , C08L23/00 , B29D7/01 , A61F13/15
CPC分类号： C08J5/18 , C08J2329/04 , C08K5/0016 , C08K5/053 , C08L1/284 , C08L23/08 , C08L23/0815 , C08L29/04 , C08L53/02 , C08L67/02 , C08L2666/24 , C08L2666/04
摘要： A film that is both elastic and water-sensitive (e.g., water-soluble, water-dispersible, etc.) in that it loses its integrity over time in the presence of water is provided. To achieve these dual attributes, the film contains an olefinic elastomer and a water-soluble polymer. Although these polymers are normally chemically incompatible due to their different polarities, the present inventors have discovered that phase separation may be minimized by selectively controlling certain aspects of the film, such as the nature of the polyolefin, water-soluble polymer, and other film components, the relative amount of the film components, and so forth. For example, certain water-soluble polymers may be selected that have a low molecular weight and viscosity to enhance their melt compatibility with nonpolar polyolefins. This, in turn, may result in a film that is generally free of separate phases, which would otherwise limit the ability of the water-soluble polymer to contact water and disperse.
摘要翻译：提供了具有弹性和水敏性（例如水溶性，水分散性等）的膜，因为它在水的存在下随时间失去其完整性。为了实现这些双重属性，膜含有烯烃弹性体和水溶性聚合物。虽然这些聚合物由于其极性不同而通常是化学上不相容的，但是本发明人已经发现，通过选择性地控制膜的某些方面，例如聚烯烃，水溶性聚合物和其它膜组分的性质，可以使相分离最小化，膜成分的相对量等。例如，可以选择某些具有低分子量和粘度的水溶性聚合物，以提高它们与非极性聚烯烃的熔融相容性。这又可能导致通常没有分离相的膜，否则这将限制水溶性聚合物与水接触并分散的能力。

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