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    MELT BLOWN FIBER FORMING PROCESS AND METHOD OF MAKING FIBROUS STRUCTURES
    2.
    发明申请
    MELT BLOWN FIBER FORMING PROCESS AND METHOD OF MAKING FIBROUS STRUCTURES 审中-公开
    MELT BLOWN FIBER FORMING PROCESS AND METHOD OF MAKEING FIBROUS STRUCTURES

    公开(公告)号：US20160341119A1

    公开(公告)日：2016-11-24

    申请号：US15227443

    申请日：2016-08-03

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Nataliya V. Fedorova ,  Eric M. Moore ,  Sehyun Nam ,  Pamela A. Percha ,  Sachin Talwar

    IPC: F02B77/11 ,  D01F6/96 ,  C08K5/5313 ,  D01D5/14

    CPC classification number: F02B77/11 ,  C08G63/88 ,  C08K5/5313 ,  D01D5/0985 ,  D01D5/14 ,  D01F1/10 ,  D01F6/62 ,  D01F6/96 ,  D04H3/011 ,  D04H3/16 ,  D10B2331/04 ,  D10B2401/04 ,  D10B2401/062 ,  D10B2505/12 ,  Y10T428/298

    Abstract: A melt blowing process comprising: (a) providing a thermoplastic polymer material that includes at least one or a plurality of polyester polymers and at least one or a combination of different meltable metal phosphinates; and (b) melt blowing the thermoplastic polymer material into at least one fiber or a plurality of fibers, with each fiber having a diameter or thickness that is less than about 10 microns. The metal phosphinate is in an amount that (a) reduces the viscosity of the polyester polymer and (b) functions as a crystallizing agent, which at least promotes crystallization of the polyester polymer, when the thermoplastic polymer material is melt blown into the at least one fiber. Non-woven and woven fibrous structures can be made using fibers made from this process.

    Abstract translation: 一种熔喷法，其包括：（a）提供热塑性聚合物材料，其包括至少一种或多种聚酯聚合物和至少一种或不同的可熔融金属膦酸盐的组合; 和（b）将热塑性聚合物材料熔融吹入至少一根纤维或多根纤维中，每种纤维的直径或厚度小于约10微米。 金属次膦酸盐的量为（a）降低聚酯聚合物的粘度，和（b）作为结晶剂的功能，其至少促进聚酯聚合物的结晶，当热塑性聚合物材料熔融吹入至少 一根纤维 可以使用由该方法制成的纤维制造非织造织物纤维结构体。

    ORIENTED POLYLACTIC ACID POLYMER BASED FILM
    6.
    发明申请
    ORIENTED POLYLACTIC ACID POLYMER BASED FILM 审中-公开

    公开(公告)号：US20190136045A1

    公开(公告)日：2019-05-09

    申请号：US16099741

    申请日：2017-05-04

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： William W. Merrill ,  Jeffrey P. Kalish ,  Pamela A. Percha ,  Derek J. Dehn ,  Bradley L. Givot ,  Ignatius A. Kadoma

    IPC: C08L67/04 ,  C08J5/18 ,  C08J7/04 ,  B32B27/08 ,  B32B27/36

    Abstract: In one embodiment, a film is described comprising a mixture of semicrystalline polylactic acid polymer; polyvinyl acetate polymer having a glass transition temperature (Tg) midpoint as measured by differential scanning calorimetry of at least 25° C.; and plasticizer; wherein the film is oriented. In another embodiment, a film is described comprising a mixture comprising semicrystalline polylactic acid polymer, polymer having a midpoint Tg as measured by differential scanning calorimetry of at least 25° C., and plasticizer; wherein the mixture exhibits a single midpoint Tg and the single midpoint Tg ranges from 40° C. to 65° C.; and wherein the film is oriented and the oriented film exhibits a higher midpoint Tg ranging from 40° C. to 65° C. and a lower midpoint Tg ranging from 5 to 25° C.

    METHODS OF CONTROLLING HAZE IN ORTHODONTIC APPLIANCES INCLUDING SEMI-CRYSTALLINE POLYMERS
    10.
    发明公开
    METHODS OF CONTROLLING HAZE IN ORTHODONTIC APPLIANCES INCLUDING SEMI-CRYSTALLINE POLYMERS 审中-公开

    公开(公告)号：US20230363858A1

    公开(公告)日：2023-11-16

    申请号：US18029942

    申请日：2021-10-05

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Ta-Hua Yu ,  Pamela A. Percha ,  Karl J.L. Geisler ,  Bruce R. Broyles

    IPC: A61C7/08

    CPC classification number: A61C7/08

    Abstract: A dental appliance includes a polymeric shell with a plurality of cavities for receiving one or more teeth, including an interior region with a core layer of a first thermoplastic polymer A with a thermal transition temperature of about 70° C. to about 140° C. and a flexural modulus greater than about 1.3 GPa, and first and second interior layers of a second thermoplastic polymer B with a glass transition temperature of less than about 0° C., a flexural modulus less than about 1 GPa, and an elongation a break of greater than 150%; and first and second exterior layers of a third thermoplastic polymer C with a thermal transition temperature of about 70° C. to about 140° C. and a flexural modulus greater than about 1.3 GPa. The dental appliance demonstrates enhanced optical properties, with enhanced light transmission and low haze.

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