Invention Grant
- Patent Title: Bicomponent nonwoven fabric having an improved strength and air permeability and manufacturing method thereof
- Patent Title (中): 具有改进的强度和透气性的双组分非织造织物及其制造方法
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Application No.: US14522329Application Date: 2014-10-23
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Publication No.: US09528207B2Publication Date: 2016-12-27
- Inventor: Jae Gyu Park , Dong Wook Kim , Matsumara Yoshitaka , Je Deuk Yoon
- Applicant: TORAY ADVANCED MATERIALS KOREA INC.
- Applicant Address: KR Kyungsangbuk-do
- Assignee: TORAY ADVANCED MATERIALS KOREA INC.
- Current Assignee: TORAY ADVANCED MATERIALS KOREA INC.
- Current Assignee Address: KR Kyungsangbuk-do
- Agency: Arent Fox LLP
- Priority: KR10-2014-0083622 20140704
- Main IPC: D04H1/541
- IPC: D04H1/541 ; D04H1/435 ; B29C47/00 ; B29K67/00

Abstract:
A nonwoven fabric having improved air permeability and strength is formed with a filament of sheath-core shape, the core part being constituted with blending a polyethylene terephthalate (PET) having melting point (Tm) of 250˜270° C. of 40 to 60 parts by weight with a polytrimethylene terephthalate (PTT) having melting point of 215˜235° C. of 10 to 50 parts by weight, the sheath part being constituted with a polyethylene terephthalate (PET) having melting point of 210˜230° C. of 10 to 30 parts by weight, and the core and sheath parts being spun with conjugate respectively, and formed with a web. The bicomponent nonwoven fabric uses a bicomponent polymer and improved spin method with conjugate and blending spinning to produce PTT nonwoven fabric having an improved strength and air permeability and soft property and proper resistance which are required for a variety of uses and to produce it economically.
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