公开(公告)号：US20190118248A1

公开(公告)日：2019-04-25

申请号：US16161054

申请日：2018-10-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YOSHIE TAKAHASHI ,  KAZUTO FUKUDA ,  TOSHIFUMI NAGINO

IPC: B22D11/06 ,  B28B3/12

Abstract: A roll press machine according to the present disclosure includes a hot press mechanism having a pair of rollers arranged with a gap therebetween and heating mechanisms that heat the pair of rollers to heat and roll a forming material, a material feeding mechanism that feeds the forming material and a conveying mechanism that conveys the forming material fed by the material feeding mechanism to the hot press mechanism, in which each of the pair of rollers in the hot press mechanism has a roller structure including an outermost layer and an intermediate layer inside the outermost layer, and a thermal expansion coefficient of the outermost layer is lower than a thermal expansion coefficient of the intermediate layer.

公开(公告)号：US20170327983A1

公开(公告)日：2017-11-16

申请号：US15486385

申请日：2017-04-13

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KOTA NAKAHIRA ,  TOSHIFUMI NAGINO ,  KAZUFUMI MIYATAKE ,  MOTOI HATANAKA

IPC: D04H1/56 ,  D04H1/4291 ,  D01D5/098 ,  D01F6/06 ,  D04H3/16 ,  D04H3/007

CPC classification number: D04H1/56 ,  D01D5/0985 ,  D01F6/06 ,  D04H1/4291 ,  D04H1/4382 ,  D04H3/007 ,  D04H3/016 ,  D04H3/16

Abstract: A non-woven fabric, non-woven fabric producing method and an acoustic absorbent of desirable properties are provided. The non-woven fabric is a non-woven fabric including a plurality of ultrafine fibers configured from a thermoplastic resin, and comprises: a base portion configured by entangling of some of the plurality of ultrafine fibers; and a fiber bundle configured by entangling and bundling of other ultrafine fibers in the plurality of ultrafine fibers, and that is entangled with the base portion. The fiber bundle has a lower void fraction than a void fraction of the base portion.