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1. 发明申请

US20200157336A1 COMPOSITIONS AND FILMS COMPRISING POLYLACTIC ACID POLYMER, POLYVINYL ACETATE POLYMER AND PLASTICIZER 审中-公开
公开(公告)号：US20200157336A1
公开(公告)日：2020-05-21
申请号：US16748040
申请日：2020-01-21
申请人： 3M INNOVATIVE PROPERTIES COMPANY
发明人： Ning Zhou , Robert S. Clough , Derek J. Dehn , Jeffrey P. Kalish , William W. Merrill , Kevin M. Lewandowski , Jayant Chakravarty
IPC分类号： C08L31/04 , C09J7/24 , C08K5/11 , C08K5/103 , C09J7/25 , C08J5/18 , B32B27/30 , B32B7/12 , C08L67/04
摘要： A composition is described comprising semicrystalline polylactic acid polymer; polyvinyl acetate polymer having a glass transition temperature (Tg) of at least 25° C.; plasticizer; and optionally amorphous polylactic acid polymer. In another embodiment the composition further comprises nucleating agent. Also described are films comprising the composition as well as articles, such as a tape or sheet, comprising the film described herein and a layer of pressure sensitive adhesive disposed on the film.

2. 发明申请

US20190284357A1 Composition and Films Comprising Polylactic Acid Polymer and Copolymer Comprising Long Chain Alkyl Moiety 审中-公开
公开(公告)号：US20190284357A1
公开(公告)日：2019-09-19
申请号：US16461013
申请日：2017-11-29
申请人： 3M INNOVATIVE PROPERTIES COMPANY
发明人： William W. Merrill , Jeffrey P. Kalish , Jacob D. Young , Ramesh C. Kumar , Sonja S. Mackey , Kanta Kumar , Adam R. Wohl , David J. Kinning , Michael D. Crandall , Ignatius A. Kadoma
IPC分类号： C08J5/18 , B32B27/08 , B32B27/36 , B32B7/06 , B32B7/12 , C08L67/04
摘要： Compositions and films are described comprising a polylactic (PLA) polymer and a copolymer comprising a first moiety comprising a C12-C30 alkyl group and a second moiety that is miscible in the composition. Suitable first moieties include a C12-C30 alkyl (meth)acrylate or a polyvinyl alcohol comprising pendent C12-C30 alkyl groups. Suitable second moieties include C1-C10 (meth)acrylic acid or ester thereof, vinyl acetate and ethylene vinyl acetate. The aforementioned composition may be used to form a release layer of an adhesive article such as a pressure sensitive adhesive tape. The films may be a monolithic film or a film layer of a multilayer film. The release layer may be disposed upon a substrate layer that may also comprise PLA. The films are produced by melt extrusion of the aforementioned composition and may be oriented.

3. 发明申请

US20160229111A1 PROCESSES AND APPARATUS FOR MAKING TRANSVERSELY DRAWN FILMS WITH SUBSTANTIALLY UNIAXIAL CHARACTER 审中-公开
标题翻译：用于制造具有主要单一字符的横向拉伸膜的方法和装置
公开(公告)号：US20160229111A1
公开(公告)日：2016-08-11
申请号：US15131283
申请日：2016-04-18
申请人： 3M INNOVATIVE PROPERTIES COMPANY
发明人： William W. Merrill , Jeffery N. Jackson , Andrew T. Ruff , John A. Wheatley , Dennis L. Krueger
IPC分类号： B29C55/08
CPC分类号： B29C55/08 , B29C55/20 , B29C69/001 , B29C2793/009 , B29K2067/003 , B29K2995/0051 , B29L2011/00 , Y10S425/041
摘要： A roll of multilayer optical film is described. The roll includes a substantially uniaxially-oriented multilayer optical film, where at least one layer of the multilayer optical film has indices of refraction in a length direction and a thickness direction that are substantially the same, but substantially different from an index of refraction in a width direction.
摘要翻译：描述了一卷多层光学膜。辊包括基本上单轴取向的多层光学膜，其中多层光学膜的至少一层在长度方向和厚度方向上具有基本相同的折射率，但是基本上不同于折射率宽度方向。

4. 发明申请

US20140308491A1 INTERNALLY PATTERNED MULTILAYER OPTICAL FILMS USING SPATIALLY SELECTIVE BIREFRINGENCE REDUCTION 审中-公开
标题翻译：使用空间选择性减少的内部图案多层光学膜
公开(公告)号：US20140308491A1
公开(公告)日：2014-10-16
申请号：US14315778
申请日：2014-06-26
申请人： 3M INNOVATIVE PROPERTIES COMPANY
发明人： William W. Merrill , Douglas S. Dunn , Travis L. Potts
IPC分类号： G02B5/30
CPC分类号： G02B5/3041 , B42D25/23 , B42D25/24 , B42D25/391 , G02B5/0816 , G02B5/0841 , G02B5/285 , G02B5/287 , G02B5/30 , G02B5/305 , G02B5/3083 , G02B27/28 , G02F1/133536 , G02F1/13363 , G02F2001/133521 , Y10T428/24942
摘要： A reflective film includes interior layers arranged to selectively reflect light by constructive or destructive interference, the layers extending from a first zone to a second zone of the film. The film has a first thickness and the interior layers provide a first reflective characteristic in the first zone; the film has a second thickness and the interior layers provide a second reflective characteristic in the second zone. The difference between the first and second reflective characteristics is not substantially attributable to any difference between the first and second thicknesses, which difference may be zero. Rather, the difference in the reflective characteristics is substantially attributable to reduced birefringence of at least some of the interior layers in one zone relative to the other zone. The film may also incorporate absorbing agents to assist in the manufacture or processing of the film. Related methods and articles are also disclosed.
摘要翻译：反射膜包括布置成通过结构性或相消干涉选择性地反射光的内层，所述层从膜的第一区延伸到第二区。该膜具有第一厚度，并且内部层在第一区域中提供第一反射特性; 该膜具有第二厚度，并且内部层在第二区域中提供第二反射特性。第一和第二反射特性之间的差异基本上不能归因于第一和第二厚度之间的任何差异，该差值可以为零。相反，反射特性的差异基本上归因于在一个区域中的至少一些内层相对于另一区域的双折射率的降低。该薄膜还可以包含吸收剂以协助制造或加工薄膜。还公开了相关的方法和文章。

5. 发明公开

US20230219274A1 METHODS AND SYSTEMS FOR MEASUREMENT AND CONTROL OF CIRCUMFERENTIAL LAYER DISTRIBUTION IN BLOWN FILMS 审中-公开
公开(公告)号：US20230219274A1
公开(公告)日：2023-07-13
申请号：US17999977
申请日：2021-06-09
申请人： 3M INNOVATIVE PROPERTIES COMPANY
发明人： William W. Merrill , Pradeep P. Bhat , Francis T. Caruso , David L. Hofeldt , David D. Nguyen , Ziang Li
IPC分类号： B29C48/92 , B29C48/32 , B29C48/00 , B29C48/18 , G01B11/06 , G01B11/24
CPC分类号： B29C48/92 , B29C48/32 , B29C48/0018 , B29C48/18 , G01B11/06 , G01B11/24 , B29C2948/92152 , B29C2948/92704 , B29C2948/92904
摘要： A sensing system for measurement of a multilayered blown polymeric film. A feedblock supplies polymeric material streams to an annular blown film die to form a plurality of layers of different polymeric materials. A sensing system is positioned adjacent to a film bubble extruded from the blown film die, wherein the blown film bubble includes annular layers of at least two different polymeric materials. The sensing system emits a signal toward selected circumferential positions around the film bubble and receives a plurality of reflected signals at each circumferential position. Each reflected signal in the plurality of reflected signals is generated at an interface between annular layers that includes a refractive index change detectable by the sensing system. A processor processes the reflected signals from the sensing system, and for each circumferential position determines a layer thickness profile for each polymeric material in the film.

6. 发明申请

US20220127444A1 COMPOSITIONS AND FILMS COMPRISING POLYLACTIC ACID POLYMER, POLYVINYL ACETATE POLYMER AND PLASTICIZER 有权
公开(公告)号：US20220127444A1
公开(公告)日：2022-04-28
申请号：US17570862
申请日：2022-01-07
申请人： 3M INNOVATIVE PROPERTIES COMPANY
发明人： Ning Zhou , Robert S. Clough , Derek J. Dehn , Jeffrey P. Kalish , William W. Merrill , Kevin M. Lewandowski , Jayant Chakravarty
IPC分类号： C08L31/04 , C08L67/04 , C09J7/25 , C08K5/103 , C08K5/11 , C09J7/24 , B32B7/12 , B32B27/30 , C08J5/18
摘要： A composition is described comprising semicrystalline polylactic acid polymer; polyvinyl acetate polymer having a glass transition temperature (Tg) of at least 25° C.; plasticizer; and optionally amorphous polylactic acid polymer. In another embodiment the composition further comprises nucleating agent. Also described are films comprising the composition as well as articles, such as a tape or sheet, comprising the film described herein and a layer of pressure sensitive adhesive disposed on the film.

7. 发明授权

US10913199B2 Processes and apparatus for making transversely drawn films with substantially uniaxial character 有权
公开(公告)号：US10913199B2
公开(公告)日：2021-02-09
申请号：US15131283
申请日：2016-04-18
申请人： 3M INNOVATIVE PROPERTIES COMPANY
发明人： William W. Merrill , Jeffery N. Jackson , Andrew T. Ruff , John A. Wheatley , Dennis L. Krueger
IPC分类号： B29C55/08 , B29C55/20 , B29C69/00 , B29L11/00 , G02B5/30 , B29K67/00
摘要： A stretcher for processing a film is described. In particular, stretcher receives a film, graps edge portions of the film, conveys the film in a machine direction, and moves the opposing edge portions along diverging; substantially parabolic paths to form a stretched film.

8. 发明授权

US09864120B2 Patterned marking of multilayer optical film by thermal conduction 有权
公开(公告)号：US09864120B2
公开(公告)日：2018-01-09
申请号：US14916819
申请日：2014-09-03
申请人： 3M INNOVATIVE PROPERTIES COMPANY
发明人： Michael Benton Free , Martin B. Wolk , Rolf W. Biernath , Stephen A. Johnson , William W. Merrill , William F. Edmonds , Claire A. Jalbert
IPC分类号： G02B5/30 , G02B5/08 , G02B5/28
CPC分类号： G02B5/3083 , G02B5/0841 , G02B5/285 , G02B5/305
摘要： A multilayer optical film (130) has a packet of microlayers that selectively reflect light by constructive or destructive interference to provide a first reflective characteristic. At least some of the microlayers are birefringent. A stabilizing layer attaches to and covers the microlayer packet proximate an outer exposed surface of the film Heating elements (122) can physically contact the film to deliver heat to the packet through the stabilizing layer by thermal conduction, at altered regions of the film, such that the first reflective characteristic changes to an altered reflective characteristic in the altered regions to pattern the film The stabilizing layer provides sufficient heat conduction to allow heat from the heating elements to change (e.g. reduce) the birefringence of the birefringent microlayers disposed near the outer exposed surface in the altered regions, while providing sufficient mechanical support to avoid substantial layer distortion of the microlayers near the outer exposed surface in the altered regions.

9. 发明授权

US09851484B2 Effective media retarder films with spatially selective birefringence reduction 有权
公开(公告)号：US09851484B2
公开(公告)日：2017-12-26
申请号：US14735758
申请日：2015-06-10
申请人： 3M INNOVATIVE PROPERTIES COMPANY
发明人： William W. Merrill , Douglas Scott Dunn , David T. Yust
IPC分类号： G02B5/30 , G02B5/32 , B29D11/00 , B42D25/29 , G02F1/13363
CPC分类号： G02B5/3083 , B29D11/00644 , B29D11/0073 , B42D25/29 , B42D25/351 , B42D25/45 , G02B5/32 , G02F1/13363 , G02F2413/09
摘要： A retarder film provides a first light retardation and can be heat processed in one or more selected areas to provide a second light retardation in the selected area(s). The retarder film may have an absorption characteristic such that the heat processing can be carried out by selectively exposing the film to a suitable radiant beam. The retarder film is composed of a stack of contiguous ultrathin layers configured to provide an effective optical medium for visible light. Visible light propagates through the stack as an effective medium having effective refractive indices along principal x-, y-, and z-axes. At least some of the ultrathin layers possess intrinsic birefringence, and the effective indices of the stack are functions of the intrinsic refractive indices of the constituent ultrathin layers. The heat processing is carried out so that the ultrathin layer stack structural integrity is not substantially altered in the processed area(s).

10. 发明申请

US20150277013A1 EFFECTIVE MEDIA RETARDER FILMS WITH SPATIALLY SELECTIVE BIREFRINGENCE REDUCTION 有权
标题翻译：有效的介质延迟膜与空间选择性减少
公开(公告)号：US20150277013A1
公开(公告)日：2015-10-01
申请号：US14735758
申请日：2015-06-10
申请人： 3M INNOVATIVE PROPERTIES COMPANY
发明人： William W. Merrill , Douglas Scott Dunn , David T. Yust
IPC分类号： G02B5/30
CPC分类号： G02B5/3083 , B29D11/00644 , B29D11/0073 , B42D25/29 , B42D25/351 , B42D25/45 , G02B5/32 , G02F1/13363 , G02F2413/09
摘要： A retarder film provides a first light retardation and can be heat processed in one or more selected areas to provide a second light retardation in the selected area(s). The retarder film may have an absorption characteristic such that the heat processing can be carried out by selectively exposing the film to a suitable radiant beam. The retarder film is composed of a stack of contiguous ultrathin layers configured to provide an effective optical medium for visible light. Visible light propagates through the stack as an effective medium having effective refractive indices along principal x-, y-, and z-axes. At least some of the ultrathin layers possess intrinsic birefringence, and the effective indices of the stack are functions of the intrinsic refractive indices of the constituent ultrathin layers. The heat processing is carried out so that the ultrathin layer stack structural integrity is not substantially altered in the processed area(s).
摘要翻译：延迟膜提供第一光延迟并且可以在一个或多个选定区域中进行热处理以在所选择的区域中提供第二光延迟。延迟膜可以具有吸收特性，使得可以通过将膜选择性地暴露于合适的辐射束来进行热处理。延迟膜由连续的超薄层的叠层组成，其被配置为提供可见光的有效光学介质。可见光通过堆叠传播，作为沿着主要x轴，y轴和z轴具有有效折射率的有效介质。至少一些超薄层具有固有的双折射，并且叠层的有效折射率是组成超薄层的固有折射率的函数。进行热处理，使得超薄层堆叠结构完整性在经处理的区域中基本上不改变。

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