Face masks having an elastic and polyolefen thermoplastic band thereto by heat and pressure

A polyolefin and thermoplastic technology, applied in the field of preparing filter masks, can solve the problem of not being able to filter air

Inactive Publication Date: 2002-06-05
3M INNOVATIVE PROPERTIES CO
View PDF27 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Face shields are transparent, liquid-impermeable shields that cover the wearer's face to protect them

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Face masks having an elastic and polyolefen thermoplastic band thereto by heat and pressure
  • Face masks having an elastic and polyolefen thermoplastic band thereto by heat and pressure
  • Face masks having an elastic and polyolefen thermoplastic band thereto by heat and pressure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0059] Composite straps are sonically welded to a variety of conventional filtering mask bodies. The sonic welder used was a Branson 501 sonic welder with 1170P controller. The shim (or the part of the welder that is in contact with the weld zone) is provided with a 14.5mm x 9.8mm contact zone with a plurality of 0.5mm protrusions at 0.7mm spacing and 0.7mm height. For welding, place the straps in the desired location on the mask body and place the shims on the straps. The shim is slightly larger than the width of the straps so that it overlaps the mask body. The shim is made to vibrate for a certain period of time (welding time), during which time heat is generated. After soldering, the shim remains in the weld zone (hold time) to secure the solder bond.

[0060] The following conventional filtering masks were used as the mask body in this example:

[0061] "8210" is an 8210 trademark filtering mask available from 3M Company in the United States, which has a molded shell ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Melting pointaaaaaaaaaa
Melting pointaaaaaaaaaa
Login to view more

Abstract

A filtering mask (10), comprising: a mask body (20) and a tie strap (30). The mask body (20) is adapted to cover the nose and mouth of the wearer and includes polyolefin-containing fibers. The tether (30) comprises an elastic component and a thermoplastic fiber component, the thermoplastic fiber component having a melting point of about 250°C or lower, selected from polyolefins, substituted polyolefins, and mixtures thereof, the tether (30) is attached to a reliable place (23) on said mask body (20) by heat and pressure.

Description

[0001] The present invention relates to a filtering mask supported on the wearer's face by straps comprising an elastic component and a thermoplastic polyolefin component, the straps being attached to the mask body by heat and pressure Up. background of the invention [0002] In many environments where the air contains dust or other airborne pollutants, fiber filter masks are often used to protect workers. A mask is used to remove particulate matter from the air, which is then inhaled by the wearer. In some settings, masks are used to protect nearby people (i.e., people other than those wearing the mask) or nearby objects (such as equipment placed in a clean room). Masks are used to remove infectious agents exhaled by the wearer to protect nearby people and nearby objects. [0003] Fibrous filtering masks typically have a porous mask body shaped to filter inhaled or expelled air. Air passes through the mask material, and the filter layers in the mask remove airborne particl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A45D44/12A41D13/11A62B18/08A62B23/02B29C65/00
CPCB29L2031/4835B29C66/729A41D13/1161A62B23/025A62B18/084A41D13/1146B29C66/532B29C66/5326B29C65/08B29C65/10B29C65/04B29C65/106B29C65/18B29C65/02B29C66/71B29C66/712B29C66/723B29C66/1122B29K2023/12B29K2023/00B29K2021/00B29K2009/00A41G7/00
Inventor 薛建贤D·C·凯撒
Owner 3M INNOVATIVE PROPERTIES CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap