公开(公告)号：US20250019508A1

公开(公告)日：2025-01-16

申请号：US18894138

申请日：2024-09-24

Applicant: TOYOBO CO., LTD.

Inventor： Kaya TOKUDA ,  Tetsuo OKUYAMA ,  Naoki WATANABE ,  Hiroyuki WAKUI ,  Harumi YONEMUSHI ,  Denichirou MIZUGUCHI

IPC: B29C71/02

Abstract: Provided is a layered body including glass and a polyamic acid heat-cured product that is readily releasable from an inorganic substrate after being heated at 250° C. A layered body including an inorganic substrate and a polyamic acid heat-cured product, the layered body being characterized by a weight average molecular weight of 30,000 or greater for the polyamic acid, and a peel strength of 0.3 N/cm or weaker between the polyamic acid heat-cured product layer and the inorganic substrate, after the layered body has been heated at 250° C.

公开(公告)号：US20240116274A1

公开(公告)日：2024-04-11

申请号：US18263953

申请日：2022-02-22

Applicant: TOYOBO CO., LTD.

Inventor： Kaya TOKUDA ,  Satoshi MAEDA ,  Tetsuo OKUYAMA ,  Naoki WATANABE

IPC: B32B17/10 ,  B32B7/12 ,  B32B27/08 ,  B32B27/28 ,  B32B27/32 ,  B32B27/36

CPC classification number: B32B17/10 ,  B32B7/12 ,  B32B27/08 ,  B32B27/281 ,  B32B27/32 ,  B32B27/36 ,  B32B2307/538 ,  B32B2457/00

Abstract: An inorganic substrate/polymer film laminate with an attached protective film that allows for easy individual removal even when stored in a stacked state for a long period of time is provided. A first laminate is characterized by including an inorganic substrate, a polymer film layer and a first protective film, in that order, wherein the surface roughness Ra of the surface of the inorganic substrate opposite of the polymer film layer is 0.02-1.2 μm.

公开(公告)号：US20220274314A1

公开(公告)日：2022-09-01

申请号：US17632159

申请日：2020-06-18

Applicant: TOYOBO CO., LTD.

Inventor： Tetsuo OKUYAMA ,  Kaya TOKUDA ,  Kazuyuki OUYA ,  Naoki WATANABE

IPC: B29C63/02 ,  B29C65/48 ,  B29C71/00

Abstract: This apparatus for manufacturing a laminate comprises: a first sheet transporting device for transporting a first sheet; a water supply device for supplying an aqueous medium to the surface of the first sheet coated with a silane coupling agent and/or the surface of a second sheet coated with a silane coupling agent; and a laminating device for attaching the first sheet and the second sheet which have been supplied with the aqueous medium.

公开(公告)号：US20220143964A1

公开(公告)日：2022-05-12

申请号：US17434405

申请日：2020-03-30

Applicant: TOYOBO CO., LTD.

Inventor： Masahiro YAMASHITA ,  Kaya TOKUDA ,  Tetsuo OKUYAMA

IPC: B32B37/00 ,  B32B37/12 ,  B32B37/20 ,  B32B37/06 ,  B65H23/195

Abstract: The present invention enables the achievement of a laminate of heat-resistant polymer films, which does not use a bonding material having inferior heat resistance. According to the present invention, a polyvalent amine compound serving as a reactive compound is applied to heat-resistant polymer films such as PET, PEN or PI films, and the resulting polymer films are superposed upon each other and subsequently subjected to a heat treatment under predetermined conditions, thereby obtaining a laminate of heat-resistant polymer films. Since the thus-obtained laminate does not use a bonding material, the heat resistance is not decreased and the film properties before lamination are not deteriorated. Since the process for obtaining this laminate has excellent productivity, this laminate is useful as a low-cost thick heat-resistant polymer film or sheet of high performance.

公开(公告)号：US20240278537A1

公开(公告)日：2024-08-22

申请号：US18569909

申请日：2022-07-14

Applicant: TOYOBO CO., LTD.

Inventor： Tetsuo OKUYAMA ,  Keisuke MATSUO

IPC: B32B15/08 ,  B32B7/12 ,  B32B15/18 ,  B32B15/20 ,  B32B27/28 ,  C09J11/06 ,  C09J185/00

CPC classification number: B32B15/08 ,  B32B7/12 ,  B32B15/18 ,  B32B15/20 ,  B32B27/281 ,  C09J11/06 ,  C09J185/00 ,  B32B2250/02 ,  B32B2255/06 ,  B32B2255/10 ,  B32B2255/26 ,  B32B2307/306 ,  B32B2307/538 ,  B32B2307/748

Abstract: The invention provides a laminate roll having excellent long-term heat resistance even when a metal substrate having a high surface roughness is used. In particular the invention provides a laminate roll in which a heat-resistant polymer film, an adhesive layer, and a metal substrate are laminated in this order, said laminate roll being characterized in that: the adhesive layer is derived from a silane coupling agent and/or derived from silicone; the adhesive strength FO of the laminate roll as measured by a 90-degree peel method before a long-term heat resistance test is 0.05-20 N/cm inclusive; and the adhesive strength Ft of the laminate roll as measured by the 90-degree peel method after the long-term heat resistance test is higher than the adhesive strength FO, wherein, for the long-term heat resistance test, the laminate roll is left to stand and stored in a nitrogen atmosphere at 350° C. for 500 hours.

公开(公告)号：US20240075718A1

公开(公告)日：2024-03-07

申请号：US18263100

申请日：2022-06-09

Applicant: TOYOBO CO., LTD.

Inventor： Kaya TOKUDA ,  Satoshi MAEDA ,  Tetsuo OKUYAMA ,  Harumi YONEMUSHI ,  Denichirou MIZUGUCHI

IPC: B32B27/08 ,  B32B3/30 ,  B32B7/06 ,  B32B17/10 ,  B32B27/16 ,  B32B27/28 ,  B32B27/36

CPC classification number: B32B27/08 ,  B32B3/30 ,  B32B7/06 ,  B32B17/10 ,  B32B27/16 ,  B32B27/281 ,  B32B27/36 ,  B32B2255/10 ,  B32B2255/26 ,  B32B2307/306 ,  B32B2307/748

Abstract: The invention provides a laminate having a protective film release auxiliary tape and comprising a rigid temporary support body (inorganic substrate) and a polymer film provided with a protective film. The laminate is configured such that the protective film can be peeled from the polymer film without separating the polymer film from the temporary support body. The laminate comprises an inorganic substrate, a heat-resistant polymer film, a protective film, and a protective film release auxiliary tape in this order. The adhesion strength F1 according to a 90 degree peeling method between the inorganic substrate and the heat-resistant polymer film, the adhesion strength F2 according to a 90 degree peeling method between the heat-resistant polymer film and the protective film, and the adhesion strength F3 according to a 90 degree peeling method between the protective film and the protective film release auxiliary tape satisfy the relationship F3>F1>F2.

公开(公告)号：US20190134963A1

公开(公告)日：2019-05-09

申请号：US16096490

申请日：2017-04-24

Applicant: TOYOBO CO., LTD.

Inventor： Shota HARA ,  Toshiyuki TSUCHIYA ,  Masahiro YAMASHITA ,  Tetsuo OKUYAMA ,  Naoki WATANABE

IPC: B32B27/28 ,  B32B7/12 ,  C08L79/08 ,  C08K5/5419

Abstract: A laminate mainly made of polyimide with low thermal expansion, high mechanical strength, and high heat resistance, and a method for manufacturing the same are provided. A surface of a polyimide film is activated and then treated by a silane coupling agent. Subsequently, the obtained silane coupling agent-treated polyimide films are superimposed, and pressure and heat are applied to the superimposed polyimide films so as to manufacture a polyimide film laminate. The obtained polyimide film laminate has a cross-sectional structure of superimposing polyimide film layers and silane coupling agent condensate layer(s) alternately to each other. Adhesive strength between the polyimide films of the polyimide film laminate of the present invention does not change largely from initial adhesive strength even after heat treatment at 400° C. for 15 minutes. Further, the polyimide film laminate exhibits a high bending elastic modulus and impact resistance.

公开(公告)号：US20170225433A1

公开(公告)日：2017-08-10

申请号：US15503382

申请日：2015-08-24

Applicant: TOYOBO CO., LTD.

Inventor： Tetsuo OKUYAMA ,  Naoki WATANABE ,  Issei KOBAYASHI ,  Toshiyuki TSUCHIYA ,  Satoshi MAEDA

IPC: B32B9/04 ,  H01L21/683 ,  B32B37/10

CPC classification number: B32B9/04 ,  B32B27/34 ,  B32B37/10 ,  B32B2255/20 ,  B32B2457/00 ,  C08J7/00 ,  C08J7/065 ,  C08J2379/08 ,  H01L21/6836 ,  Y02P20/582

Abstract: It is provided that a polymer film; a preparation method of the polymer film; and a laminated body used the polymer film. The polymer film is suitable for use in producing a laminate body which comprises a support and a polymer film, and is reduced in foreign-matter trapping and which can be used for supplying film devices using conventional apparatuses for glass substrates or silicon substrates. The polymer film coated with the layer of silane coupling agent, which is suitable for producing a laminate that comprises a support and a polymer film, comprises a silane coupling agent layer formed on at least one surface of the polymer film, wherein the silane coupling agent layer has a three-dimensional surface roughness (Sa) of 5.0 nm or less. The method of efficient for producing the polymer film coated with the above layer is the method for producing without using a vacuum.

公开(公告)号：US20240336033A1

公开(公告)日：2024-10-10

申请号：US18571852

申请日：2022-07-22

Applicant: TOYOBO CO., LTD.

Inventor： Kaya TOKUDA ,  Tetsuo OKUYAMA ,  Keisuke MATSUO

IPC: B32B15/08 ,  B32B7/12 ,  B32B37/10

CPC classification number: B32B15/08 ,  B32B7/12 ,  B32B37/10 ,  B32B2307/306 ,  B32B2379/08 ,  B32B2457/12

Abstract: Provided is a laminate that has excellent long-term heat resistance even when an inorganic substrate having a high surface roughness is used. This laminate is characterized by having an inorganic substrate, a silane coupling agent layer, and a heat-resistant polymer film in this order, and satisfying the following (A)-(C). (A) The peel strength F0 of the laminate, as measured by a 90° peeling method, is 1.0-20 N/cm. (B) In the surface of the inorganic substrate after peeling the heat-resistant polymer film from the laminate at 90°, the area of a peeled portion on the boundary surface between the inorganic substrate and the silane coupling agent layer is at most 20% of the entire peeled surface. (C) The peel strength F1 of the laminate, as measured by the 90° peeling method after heating in a nitrogen atmosphere at 350° C. for 500 hours, is greater than F0.

公开(公告)号：US20240246319A1

公开(公告)日：2024-07-25

申请号：US18566488

申请日：2022-07-14

Applicant: TOYOBO CO., LTD.

Inventor： Keisuke MATSUO ,  Tetsuo OKUYAMA

IPC: B32B15/08 ,  B32B7/12

CPC classification number: B32B15/08 ,  B32B7/12 ,  B32B2307/7376 ,  B32B2457/12

Abstract: Provided is a laminate that has excellent long-term heat resistance even when a metal substrate having a high surface roughness is used. A heat-resistant polymer film, an adhesive layer, and a metal substrate are layered in this order in the laminate. The laminate is characterized in that the adhesive layer is a silane coupling agent-derived adhesive layer and/or a silicone-derived adhesive layer, the adhesive strength F0 of the laminate prior to long-term heat resistance testing according to the 90 degree peel method is 0.05 N/cm to 20 N/cm inclusive, and the adhesive strength Ft of the laminate after long-term heat resistance testing according to the 90 degree peel method is larger than F0.