公开(公告)号：US20250154724A1

公开(公告)日：2025-05-15

申请号：US19019659

申请日：2025-01-14

Applicant: KANEKA CORPORATION

Inventor： Itsuki KUSAKABE ,  Yasunori OKADA

IPC: D21H19/28 ,  B65D65/42 ,  D21H25/06

Abstract: A method of forming a laminated article that includes a substrate and a resin layer. The method includes forming a coating on a substrate by applying an aqueous dispersion of a poly(hydroxyalkanoate) resin to the substrate. Subsequently, the resin layer is formed by fusing the poly(hydroxyalkanoate) resin by heating the coating. The coating can be heated using superheated steam to a surface temperature 10 to 100° C. above a melting point (Tm) of the poly(hydroxyalkanoate) resin.

公开(公告)号：US20250083426A1

公开(公告)日：2025-03-13

申请号：US18955030

申请日：2024-11-21

Applicant: KANEKA CORPORATION

Inventor： Kensuke MURASHIMA ,  Itsuki KUSAKABE ,  Masayuki FUJITA ,  Yasunori OKADA

IPC: B32B27/10 ,  B32B7/12 ,  B32B27/36 ,  C09J7/35 ,  C09J11/08

Abstract: A laminate includes, in order, a substrate layer (A), a bonding layer (B), and a resin layer (D) containing a poly(3-hydroxyalkanoate) copolymer (C). A glass transition temperature of a total resin material contained in the bonding layer (B) is from 20 to below 90° C., the bonding layer (B) has a weight per square meter of 0.1 to less than 5.0 g/m2, and the resin layer (D) has a thickness of 5 to 100 μm.

公开(公告)号：US20240392158A1

公开(公告)日：2024-11-28

申请号：US18698106

申请日：2022-10-06

Applicant: KANEKA CORPORATION

Inventor： Yasunori OKADA ,  Itsuki KUSAKABE

IPC: C09D167/04 ,  C09D7/45 ,  C09D7/65 ,  D21H19/12 ,  D21H27/10

Abstract: A method for producing a laminated body including a substrate layer and a resin layer formed on at least one side of the substrate layer, the resin layer containing a poly(3-hydroxybutyrate) resin and having a weight per unit area (dry weight) of 15 to 50 g/m2. The method includes the steps of applying an aqueous dispersion (HB-A) to a surface of the substrate layer to form a coat (a) of the aqueous dispersion (HB-A) and heating the coat (a) to form a coating layer (A) having a weight per unit area (dry weight) of 0.5 to 10 g/m2, wherein the aqueous dispersion (HB-A) contains a poly(3-hydroxybutyrate) resin (a1) and a dispersant (a2) including a water-soluble polymer, and the amount of the dispersant (a2) is from 0.1 to 2.0 parts by weight per 100 parts by weight of the poly(3-hydroxybutyrate) resin (a1); and applying an aqueous dispersion (HB-B) to a side having the coating layer (A) to form a coat (b) of the aqueous dispersion (HB-B) and heating the coat (b) to form a coating layer (B), wherein the aqueous dispersion (HB-B) contains a poly(3-hydroxybutyrate) resin (b1) and a dispersant (b2) including a water-soluble polymer, and the amount of the dispersant (b2) is from 0 to 0.5 parts by weight per 100 parts by weight of the poly(3-hydroxybutyrate) resin (b1).

公开(公告)号：US20240270998A1

公开(公告)日：2024-08-15

申请号：US18569700

申请日：2022-06-10

Applicant: KANEKA CORPORATION

Inventor： Kensuke MURASHIMA ,  Itsuki KUSAKABE ,  Masayuki FUJITA ,  Yasunori OKADA

IPC: C09D167/04 ,  B32B7/02 ,  B32B27/10 ,  B32B27/36 ,  C08G63/06

CPC classification number: C09D167/04 ,  B32B7/02 ,  B32B27/10 ,  B32B27/36 ,  C08G63/06 ,  B32B2250/03 ,  B32B2307/7163 ,  B32B2307/718 ,  B32B2307/748 ,  B32B2553/00 ,  C08G2230/00

Abstract: A biodegradable laminated article includes: a substrate layer; a first thermoplastic resin (A1) layer located on one side of the substrate layer and containing a polyhydroxyalkanoate resin; and a second thermoplastic resin (A2) layer located on the other side of the substrate layer and containing a polyhydroxyalkanoate resin. The weight per unit area of the first thermoplastic resin (A1) layer is from 10 to 200 g/m2, and the weight per unit area of the second thermoplastic resin (A2) layer is from 0.1 to 5 g/m2.