FACE MASK HAVING WELDED THERMOPLASTIC MASK BODY

Title:

FACE MASK HAVING WELDED THERMOPLASTIC MASK BODY

Document Type and Number:

WIPO Patent Application WO/2012/141930

Kind Code:

A3

Abstract:

A respirator (10) that includes a mask body (12) and at least one filter cartridge (24). The mask body (12) has a central portion (14) and a peripheral portion (16). The filter cartridge (24) is attached to the rigid central portion (16). The peripheral portion 14 is made from a low stiffness first thermoplastic material, and the central portion (16) is made from a rigid second thermoplastic material. The first thermoplastic material is welded to the second thermoplastic material. A respirator of this structure can be made in a convenient manner, with a sound hermetic bond between the parts, while also being light in weight.

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Inventors:

CHOI DONG-IL (KR)
LEE KYOUNGHO (KR)
LEE JIN-HO (KR)
KANG BONGHYUP (KR)
NOH DONG-SUN (KR)

Application Number:

PCT/US2012/031841

Publication Date:

January 03, 2013

Filing Date:

April 02, 2012

Export Citation:

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Assignee:

3M INNOVATIVE PROPERTIES CO (US)

International Classes:

A62B18/02; A62B7/10; A62B23/00

Foreign References:

US20050109343A1	2005-05-26
US5592937A	1997-01-14
US20050139218A1	2005-06-30
US20050211251A1	2005-09-29

Other References: