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公开(公告)号:US20230318146A1
公开(公告)日:2023-10-05
申请号:US18127148
申请日:2023-03-28
IPC分类号: H01M50/489 , H01M50/417 , H01M50/449 , H01M50/491 , H01M50/423
CPC分类号: H01M50/489 , H01M50/417 , H01M50/449 , H01M50/491 , H01M50/423
摘要: Provided is a nonaqueous electrolyte secondary battery separator which is excellent in withstand voltage property, in conformability to external force, and in liquid retention property. The nonaqueous electrolyte secondary battery separator includes: a porous film containing a polyolefin-based resin as a main component; and a porous layer containing a resin and formed on one surface or both surfaces of the porous film, the porous layer having an air permeability of not more than 500 sec/100 mL in terms of Gurley values and having an open area ratio of not more than 2%.
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公开(公告)号:US20180079113A1
公开(公告)日:2018-03-22
申请号:US15682856
申请日:2017-08-22
发明人: Atsushi NAKAZAWA
CPC分类号: B29C35/045 , B01D67/0025 , B01D67/0027 , B01D67/0055 , B01D67/0083 , B01D67/0086 , B29C35/0288 , B29C35/06 , B29C55/04 , B29C55/085 , B29C55/12 , B29C55/165 , B29K2105/041 , B29K2105/256 , B29L2031/3468 , H01M2/145
摘要: A film-stretching apparatus in accordance with an aspect of the present invention includes a stretching furnace which has (i) an entrance through which a material film is transferred into the stretching furnace and (ii) an exit through which the material film having been stretched is transferred out of the stretching furnace, an airflow in the entrance being controlled so as to be directed toward an outside of the stretching furnace.
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公开(公告)号:US20170092912A1
公开(公告)日:2017-03-30
申请号:US15278706
申请日:2016-09-28
发明人: Akihiko SHIN , Yuji TAKAOKA , Atsushi NAKAZAWA , Hideyuki SASAKI
IPC分类号: H01M2/14 , H01M2/18 , H01M10/0525
CPC分类号: H01M2/145 , B32B27/14 , C08J7/047 , C08J2323/06 , C08J2323/12 , C08J2477/10 , H01M2/1653 , H01M2/166 , H01M2/1686 , H01M2/18 , H01M10/0525
摘要: A desired drying capability is achieved while damage to a film is prevented. A film production method is arranged such that: a production process including a drying step is operated by setting a drying condition, under which to carry out the drying step, for each of at least two periods, the two periods being a first period and a second period later than the first period; the drying condition is changed in at least a part of the first period so as to be enhanced with time; and the drying condition is maintained in the second period so as to be substantially fixed.
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公开(公告)号:US20200044218A1
公开(公告)日:2020-02-06
申请号:US16599167
申请日:2019-10-11
发明人: Akihiko SHIN , Yuji TAKAOKA , Atsushi NAKAZAWA , Hideyuki SASAKI
摘要: A desired drying capability is achieved while damage to a film is prevented. A film production method is arranged such that: a production process including a drying step is operated by setting a drying condition, under which to carry out the drying step, for each of at least two periods, the two periods being a first period and a second period later than the first period; the drying condition is changed in at least a part of the first period so as to be enhanced with time; and the drying condition is maintained in the second period so as to be substantially fixed.
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公开(公告)号:US20180083245A1
公开(公告)日:2018-03-22
申请号:US15682857
申请日:2017-08-22
发明人: Atsushi NAKAZAWA
CPC分类号: H01M2/145 , B29C55/085 , B29C55/12 , B29K2023/0683 , B29K2105/041 , B29K2105/256 , B29L2007/008
摘要: A film-stretching apparatus in accordance with an embodiment of the present invention includes a stretching furnace having (i) an entrance through which a material film is transferred into the stretching furnace and (ii) an exit through which the material film having been stretched is transferred out of the stretching furnace. An airflow in the entrance is controlled so as to be directed toward an inside of the stretching furnace. A gas in the stretching furnace is controlled so as to be discharged outside the stretching furnace.
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公开(公告)号:US20180079114A1
公开(公告)日:2018-03-22
申请号:US15683175
申请日:2017-08-22
CPC分类号: B29C35/045 , B01D67/0025 , B01D67/0027 , B01D67/0083 , B01D67/0086 , B29C35/0288 , B29C35/06 , B29C55/04 , B29C55/085 , B29C55/12 , B29C55/165 , B29K2105/041 , B29K2105/256 , B29L2031/3468 , H01M2/145 , H01M2/1653 , H01M2/1686
摘要: A film-stretching apparatus in accordance with an embodiment of the present invention includes a stretching furnace which is divided into a plurality of air amount control zones. In a case where the number of the plurality of air amount control zones is seven, a total amount of air to be discharged from, out of the plurality of air amount control zones, three air amount control zones which are located on an entrance side of the stretching furnace is controlled so as to be larger than a total amount of air to be discharged from, out of the plurality of air amount control zones, three air amount control zones which are located on an exit side of the stretching furnace.
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