公开(公告)号：US20240059865A1

公开(公告)日：2024-02-22

申请号：US18386572

申请日：2023-11-02

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Hiroyuki SENDAN ,  Tadahiro YABU ,  Yukihiro FUKAGAWA ,  Kenta MURAYAMA ,  Tomohiro SHIROMARU ,  Toshio MIYATANI ,  Masahiro KONDOU ,  Hiroyuki HAMADA

IPC: C08K3/36 ,  B33Y70/10

CPC classification number: C08K3/36 ,  B33Y70/10

Abstract: A shaped body of a fluororesin obtained using a shaping material comprising a powder of a fluororesin. The powder of the fluororesin has a static bulk density of 0.3 g/ml or more and 1.5 g/ml or less, and a particle diameter of 10 μm or more and 300 μm or less in terms of D50. Also disclosed is a three-dimensional structure containing the shaped body, and a method of shaping the shaping material.

公开(公告)号：US20230202088A1

公开(公告)日：2023-06-29

申请号：US18170883

申请日：2023-02-17

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Hitoshi IMAMURA ,  Hiroyuki HAMADA ,  Eri MUKAI

IPC: B29C48/27 ,  B29C48/00 ,  B29C48/10 ,  B29C48/355

CPC classification number: B29C48/274 ,  B29C48/022 ,  B29C48/10 ,  B29C48/355 ,  B29K2027/12

Abstract: A method for producing a tube, which includes: extruding a melt-fabricable fluororesin from a mold of an extruder into a form of a tube, leading the extruded melt-fabricable fluororesin to a cooling device to cool the extruded melt-fabricable fluororesin, and winding a resulting cooled tube onto a winding reel using a winding device. A gas is fed from a head end of the tube wound onto the winding reel into a hollow of the tube, the gas in the hollow is allowed to pass through a gas-introducing entrance of the mold and then through a gas-discharging hole of the mold to discharge the gas outside, thereby allowing the gas to flow along the hollow, and an internal pressure of the hollow is kept higher than atmospheric pressure and lower than 0.5 kgf/cm2.

公开(公告)号：US20220281144A1

公开(公告)日：2022-09-08

申请号：US17825735

申请日：2022-05-26

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Hitoshi IMAMURA ,  Hiroyuki HAMADA ,  Eri MUKAI ,  Yuuki KUWAJIMA ,  Manabu FUJISAWA

IPC: B29C45/00 ,  C08F214/26

Abstract: Provided is a method for producing an injection molded article for obtaining an injection molded article by injection molding a copolymer using an injection molding machine and a mold having a hot runner, wherein the copolymer is a copolymer containing tetrafluoroethylene unit and a fluoroalkyl vinyl ether unit, and the number of functional groups of the copolymer is 100 or less per 106 main-chain carbon atoms.

公开(公告)号：US20220213996A1

公开(公告)日：2022-07-07

申请号：US17701246

申请日：2022-03-22

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Hitoshi IMAMURA ,  Eri MUKAI ,  Hiroyuki HAMADA ,  Yuuki KUWAJIMA ,  Manabu FUJISAWA

IPC: F16L47/02 ,  B29C65/00

Abstract: The present disclosure provides a welded body having a connecting structure formed by welding a first molded body and a second molded body, wherein the first and second molded bodies contain at least one copolymer selected from the group consisting of a tetrafluoroethylene/fluoro(alkyl vinyl ether) copolymer and a tetrafluoroethylene/hexafluoropropylene copolymer, and wherein the connecting structure has a liquid contact surface to be in contact with a liquid having a solubility parameter of 14 to 35 (MPa)1/2, a welded part formed in the connecting structure is not exposed to the liquid contact surface, and the number of particles of 30 nm or larger to be eluted from the liquid contact surface in the connecting structure is 1,000 particles/ml or less.