METHOD OF EAR PLUG MAKING Russian patent published in 2018 - IPC A61F11/08 B29C44/12 B29C44/34 

Abstract RU 2659253 C1

FIELD: manufacturing technology; individual protection means.

SUBSTANCE: invention relates to method of manufacturing article used as a sealing component of personal protective equipment, comprising the steps of: coating the substrate with an outer layer, wherein the base is made of a first material comprising a thermoplastic material and the outer layer is made of a second material comprising a thermoplastic material and an inactivated blowing agent with expandable spheres that is activated by heat; at least a portion of the outer layer in the mold and heat to at least a portion of the outer layer so that at least a portion of the outer layer expands to acquire a configuration of said shape and is thermally bonded to the substrate.

EFFECT: method of manufacturing a sealing component of personal protective equipment is proposed.

13 cl, 8 dwg

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RU 2 659 253 C1

Authors

Endle James P.

Hamer Jeffrey L.

Seville Alan R.

Teeters Kenneth F.

Dates

2018-06-29Published

2013-06-28Filed