公开(公告)号：US10422052B2

公开(公告)日：2019-09-24

申请号：US15556859

申请日：2016-03-09

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Wan Gyu Hahm ,  In Woo Nam ,  Seung Jin Lee ,  Do Kun Kim ,  Ki Sub Lim ,  Joo Hyung Lee ,  Gyu Dong Lee ,  Yeong Og Choi ,  Byeong Jin Yeang

IPC: D01D5/12 ,  D01D5/16 ,  D01D5/253 ,  D01D5/34 ,  D01D5/36 ,  D01D7/00 ,  D01D10/02 ,  D01D5/084 ,  D01D5/088 ,  D01D5/098 ,  D01D5/30 ,  D01F8/00 ,  D01F8/14 ,  D01D5/32 ,  D01F6/06 ,  D01F6/60 ,  D01F6/62 ,  D01F8/06 ,  D01F8/12 ,  D01D4/02 ,  D01F6/04

Abstract: Provided is a method of manufacturing high strength synthetic fibers, and high strength synthetic fibers manufactured using the same. More particularly, the method involves a localized heating process by raising the temperature of a molten spinning fiber to a temperature higher than that of a pack body during a short period of time with no degradation through a heating zone located in the immediate vicinity of capillary in the spinning nozzle, so as to effectively control the molecular entanglement structure in the molten polymer without reducing the molecular weight and thus to enhance the drawability of the as-spun fibers, thereby improving the mechanical properties of the as-spun fibers, such as strength, elongation, etc., using the existing processes of melt spinning and drawing and thus enabling a mass production of a high-performance fiber at low cost.

公开(公告)号：US11833257B2

公开(公告)日：2023-12-05

申请号：US15735818

申请日：2016-06-10

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Tae Hee Kim ,  Jung Nam Im ,  Song Jun Doh ,  Chaehwa Kim ,  Yoonjin Kim ,  Gyu Dong Lee

IPC: A61L15/42 ,  A61F13/00 ,  A61L15/22 ,  A61L15/44 ,  B29C44/00 ,  B29K105/04

CPC classification number: A61L15/425 ,  A61F13/00012 ,  A61F13/00042 ,  A61F13/00063 ,  A61F13/00987 ,  A61L15/225 ,  A61L15/44 ,  B29C44/00 ,  A61L2300/102 ,  A61L2300/418 ,  A61L2300/602 ,  A61L2400/04 ,  B29K2105/04 ,  C08J2201/00 ,  C08J2301/00 ,  C08J2301/02 ,  C08J2301/08 ,  C08J2305/00 ,  C08J2305/08

Abstract: Disclosed is a porous structure including water-soluble chitosan; and a carboxymethyl cellulose-based compound, wherein a weight ratio of the water-soluble chitosan and the carboxymethyl cellulose-based compound is from 65:35 to 25:75, and a process for preparing the same.

公开(公告)号：US11191865B2

公开(公告)日：2021-12-07

申请号：US15736758

申请日：2016-06-24

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Jung Nam Im ,  Song Jun Doh ,  Tae Hee Kim ,  Yoonjin Kim ,  Chaehwa Kim ,  Gyu Dong Lee ,  Gahee Kim

IPC: A61L15/22 ,  A61L15/28 ,  A61L31/04 ,  A61L15/44 ,  D04H1/04 ,  D04H1/72 ,  D06N3/00 ,  D06N3/12

Abstract: Disclosed are a medical fiberous structure and a method for preparing the same, wherein the medical fiberous structure comprises calcium carboxymethyl cellulose and a chitosan compound, at least one of the calcium carboxymethyl cellulose and the chitosan compound having a fibrous shape.