公开(公告)号：US12036715B2

公开(公告)日：2024-07-16

申请号：US16961893

申请日：2019-01-23

Applicant: DENKA COMPANY LIMITED

Inventor： Keishi Maeda ,  Junpei Fujiwara

IPC: B29C48/12 ,  B29C48/08 ,  B29C48/13 ,  B29C59/02 ,  B29K21/00 ,  B29K23/00 ,  B29K75/00 ,  B29K101/12 ,  B29L31/00 ,  B29L31/30 ,  B29L31/34 ,  B32B3/26 ,  B32B3/30 ,  B32B27/08 ,  B32B27/32 ,  B32B27/40

CPC classification number: B29C48/12 ,  B29C48/08 ,  B29C48/13 ,  B29C59/02 ,  B32B3/26 ,  B32B3/30 ,  B32B27/08 ,  B32B27/32 ,  B32B27/40 ,  B29K2021/003 ,  B29K2023/00 ,  B29K2075/00 ,  B29K2101/12 ,  B29L2031/3005 ,  B29L2031/3481 ,  B29L2031/712 ,  B32B2439/40 ,  B32B2605/003

Abstract: A resin sheet having hairlike bodies arranged regularly on at least one surface of an underlayer can be manufactured by forming the bodies by: melt extruding, from a die with an extrusion molding method, a thermoplastic resin having, on a log-log graph having elongational viscosity η(t) (unit: Pa·S) as measured at a strain rate of 0.5 (unit: S−1) and at a temperature at which elongation is possible as the vertical axis and elongation time t (unit: S) as the horizontal axis, a region in which the slope (log η/log t) in the interval 0.1

公开(公告)号：US11104100B1

公开(公告)日：2021-08-31

申请号：US17253362

申请日：2019-12-03

Applicant: DENKA COMPANY LIMITED

Inventor： Keishi Maeda ,  Hiroko Toyama

IPC: B32B5/12 ,  B32B27/32 ,  B32B27/40 ,  B29C51/14 ,  B29C51/00 ,  B29C51/10 ,  B32B27/12 ,  B29K75/00 ,  B29K101/12 ,  B29L31/30 ,  B29L31/34 ,  B29L31/00

Abstract: [Problem] The objective of the present invention is to provide a resin sheet that has a favorable tactile sensation and no less than a certain light transmittance and a molded article thereof.
[Solution] A resin sheet that has hair-like bodies arranged regularly on at least one surface of an underlayer and in which a continuous phase is formed without any structural boundary between the underlayer and the hair-like bodies, wherein the average height of the hair-like bodies is no less than 30 μm and no greater than 500 μm, the total light transmittance of the resin sheet measured in accordance with JIS K 7136-1 is no less than 0.1% and no greater than 20%, and the contrast ratio of the resin sheet measured in accordance with JIS K 5600 4-1 is no less than 70% and no greater than 98%.

公开(公告)号：US11987032B2

公开(公告)日：2024-05-21

申请号：US17440808

申请日：2020-03-25

Applicant: DENKA COMPANY LIMITED

Inventor： Hiroko Toyama ,  Keishi Maeda

IPC: B32B3/30 ,  B29C33/38 ,  B29C48/00 ,  B29C48/08 ,  B29C48/21 ,  B29C59/04 ,  B32B7/12 ,  B32B27/08 ,  B29K75/00 ,  B29L7/00

CPC classification number: B32B3/30 ,  B29C33/3842 ,  B29C48/002 ,  B29C48/08 ,  B29C48/21 ,  B29C59/04 ,  B32B7/12 ,  B32B27/08 ,  B29K2075/00 ,  B29L2007/002 ,  B32B2307/538 ,  B32B2439/00 ,  B32B2457/00 ,  B32B2605/003

Abstract: A resin sheet having hair-like bodies arranged regularly on at least one surface of a base layer containing a thermoplastic resin, the surface with the hair-like bodies having a coefficient of friction, as measured according to KES, of 0.5 or more and 1.0 or less, a deviation of the coefficient of friction, as measured by KES, of 0.010 or more and 0.025 or less, and a deviation of roughness, as measured by KES, of 0.2 or more and 1.5 or less.

公开(公告)号：US11872790B2

公开(公告)日：2024-01-16

申请号：US17440808

申请日：2020-03-25

Applicant: DENKA COMPANY LIMITED

Inventor： Hiroko Toyama ,  Keishi Maeda

IPC: B32B3/30 ,  B29C48/00 ,  B29C48/08 ,  B29C48/21 ,  B29C33/38 ,  B29C59/04 ,  B32B7/12 ,  B32B27/08 ,  B29K75/00 ,  B29L7/00

CPC classification number: B32B3/30 ,  B29C33/3842 ,  B29C48/002 ,  B29C48/08 ,  B29C48/21 ,  B29C59/04 ,  B32B7/12 ,  B32B27/08 ,  B29K2075/00 ,  B29L2007/002 ,  B32B2307/538 ,  B32B2439/00 ,  B32B2457/00 ,  B32B2605/003

Abstract: A resin sheet having hair-like bodies arranged regularly on at least one surface of a base layer containing a thermoplastic resin, the surface with the hair-like bodies having a coefficient of friction, as measured according to KES, of 0.5 or more and 1.0 or less, a deviation of the coefficient of friction, as measured by KES, of 0.010 or more and 0.025 or less, and a deviation of roughness, as measured by KES, of 0.2 or more and 1.5 or less.