公开(公告)号：US20160303822A1

公开(公告)日：2016-10-20

申请号：US15101437

申请日：2015-09-18

Applicant: NITTO DENKO CORPORATION

Inventor： Kazumichi KATO ,  Kohei DOI ,  Hideyuki TOKUYAMA ,  Tadao TAKAHASHI

IPC: B32B5/18 ,  C08J9/00 ,  C09J7/02 ,  C08J5/18 ,  C08J9/12

CPC classification number: C08J5/18 ,  B32B5/18 ,  B32B27/065 ,  B32B27/283 ,  B32B2266/025 ,  B32B2266/0278 ,  B32B2266/08 ,  B32B2305/022 ,  B32B2307/306 ,  B32B2307/308 ,  B32B2307/558 ,  B32B2309/02 ,  B32B2309/04 ,  B32B2405/00 ,  B32B2457/20 ,  C08J9/0061 ,  C08J9/12 ,  C08J9/30 ,  C08J9/365 ,  C08J2201/026 ,  C08J2205/044 ,  C08J2205/05 ,  C08J2205/06 ,  C08J2207/00 ,  C08J2333/06 ,  C08J2333/08 ,  C08J2433/08 ,  C08J2491/00 ,  C09J7/26 ,  C09J201/00 ,  C09J2201/606 ,  C09J2201/622 ,  C09J2203/318 ,  C09J2203/326 ,  C09J2205/114 ,  C09J2400/24 ,  C09J2423/046 ,  C09J2433/00 ,  C09J2433/006 ,  C09J2475/006 ,  G02F2201/503

Abstract: The foamed sheet includes a foamed body having an average cell diameter of 10 to 200 μm, and a compression set at 80° C. of not more than 80% and an impact absorption change rate of not more than ±20% defined by: Impact absorption change rate (%)={(an impact absorption rate b after high-temperature compression−an initial impact absorption rate a)/the initial impact absorption rate a}×100, where the impact absorption rate a is an impact absorption rate (%) of a test piece A and the impact absorption rate b (%) after high-temperature compression is an impact absorption rate (%) acquired by storing the test piece A at 80° C. for 72 hours in the state of being compressed by 60% with respect to the initial thickness of the test piece A, thereafter releasing the compression state, and thereafter conducting measurement after a lapse of 24 hours at 23° C.

Abstract translation: 其中冲击吸收率a是试件A的冲击吸收率（％）和高温压缩后的冲击吸收率b（％）是通过将试样A储存在80℃而获得的冲击吸收率（％） 在相对于试验片A的初始厚度被压缩60％的状态下72小时，然后释放压缩状态，然后在23℃经过24小时后进行测量。

公开(公告)号：US20160221299A1

公开(公告)日：2016-08-04

申请号：US14914359

申请日：2014-08-21

Applicant: NITTO DENKO CORPORATION

Inventor： Kohei DOI ,  Kunio NAGASAKI ,  Tetsuya OTSUKA ,  Mika OKADA ,  Kazumichi KATO ,  Hideyuki TOKUYAMA ,  Tsunaki KITAHARA ,  Tadao TAKAHASHI ,  Kiichiro MATSUSHITA

IPC: B32B5/18 ,  H05K5/00 ,  B32B7/12

CPC classification number: B32B5/18 ,  B32B7/06 ,  B32B7/12 ,  B32B27/065 ,  B32B27/308 ,  B32B27/36 ,  B32B2266/0207 ,  B32B2266/0221 ,  B32B2266/0242 ,  B32B2266/0278 ,  B32B2266/06 ,  B32B2307/302 ,  B32B2307/54 ,  B32B2307/546 ,  B32B2307/558 ,  B32B2307/56 ,  B32B2307/72 ,  B32B2307/732 ,  B32B2457/20 ,  B32B2571/00 ,  C08J9/30 ,  C08J2201/026 ,  C08J2201/0504 ,  C08J2205/05 ,  C08J2205/06 ,  C08J2309/04 ,  C08J2323/08 ,  C08J2333/08 ,  C08J2375/04 ,  C09J7/26 ,  C09J2201/606 ,  C09J2201/622 ,  C09J2203/318 ,  C09J2423/046 ,  C09J2431/006 ,  C09J2433/006 ,  C09J2475/006 ,  H04M1/0266 ,  H04M1/185 ,  H05K5/0017

Abstract: A foamed sheet according to the present invention has a thickness of 30 to 500 μm and includes a foam. The foam has a density of 0.2 to 0.7 g/cm3, an average cell diameter of 10 to 150 μm, and a peak top of loss tangent (tan δ) occurring in a temperature range of from −30° C. to 30° C., where the loss tangent is defined as the ratio of a loss modulus to a storage modulus determined at an angular frequency of 1 rad/s in dynamic viscoelastic measurement of the foam. The foam preferably has a maximum of the loss tangent (tan δ) in the temperature range of from −30° C. to 30° C. of 0.2 or more.

Abstract translation: 根据本发明的发泡片材的厚度为30-500μm，并且包括泡沫。 泡沫体的密度为0.2〜0.7g / cm 3，平均泡孔直径为10〜150μm，在-30℃〜30℃的温度范围内发生损耗角正切峰值（tanδ） 其中损耗角正切被定义为在泡沫的动态粘弹性测量中以1rad / s的角频率确定的损耗模量与储能模量的比率。 泡沫优选在-30℃至30℃的温度范围内具有0.2或更大的损耗角正切（tanδ）的最大值。