METHOD OF MAKING AN EARPLUG

A method of making an earplug (100), is disclosed. The method includes the steps of covering an elongate core (210, 310, 410) with an outer layer (220, 320, 420) that includes an unactivated foaming agent, positioning at least a portion of the outer layer in a mold (270, 370, 470), and activating th...

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Bibliographische Detailangaben
Hauptverfasser:	SEVILLE, Alan R, TEETERS, Kenneth F, HAMER, Jeffrey L, ENDLE, James P
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BANDAGES, DRESSINGS OR ABSORBENT PADS DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PERFORMING OPERATIONS PROSTHESES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING TREATMENT OR PROTECTION OF EYES OR EARS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A method of making an earplug (100), is disclosed. The method includes the steps of covering an elongate core (210, 310, 410) with an outer layer (220, 320, 420) that includes an unactivated foaming agent, positioning at least a portion of the outer layer in a mold (270, 370, 470), and activating the foaming agent such that a portion of the outer layer of at least a portion of the outer layer to form a sound attenuating portion (221, 321, 421) and a stem portion (222, 322, 422) bonded to the elongate core.