FIELD: medicine.
SUBSTANCE: invention relates to a medical equipment, namely a hearing protection device, and in particular to a push-to-fit type earplug made entirely of a closed-cell, slow-recovery foam. Earplug comprises a body including a sound attenuating portion and a semi-rigid stem portion having a relatively greater stiffness than the sound attenuating portion. Body is entirely made of a closed-cell, slow- recovery foam, wherein the sound attenuating portion comprises a fist composition, and the stem portion comprises a second composition different from the first one. Sound attenuating portion is characterized by a first density ρ1, and the stem portion is characterized by a second density ρ2, and ρ2>ρ1.
EFFECT: use of the invention provides hearing protection for a user.
17 cl, 5 dwg, 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF EAR PLUG MAKING | 2013 |
|
RU2610513C2 |
| PRESS-FITTED EAR PLUG WITH CAVITY IN TIP | 2018 |
|
RU2742708C1 |
| PRESSED EAR PLUG | 2013 |
|
RU2619996C2 |
| PUSH-IN EAR PLUG | 2013 |
|
RU2662889C1 |
| FOAMING ARTICLE | 2013 |
|
RU2606603C2 |
| FOAMING ARTICLE | 2013 |
|
RU2669638C1 |
| EAR PLUG WITH A CAVITY IN THE EAR TIP AND METHODS FOR ITS MANUFACTURE | 2014 |
|
RU2631199C2 |
| EARPLUG WITH TIP CAVITY AND METHODS OF MANUFACTURING SAME | 2014 |
|
RU2688399C2 |
| METHOD OF EAR PLUG MAKING | 2013 |
|
RU2659253C1 |
| HEARING PROTECTION ASSEMBLY WITH EAR PLUGS AND ITS MANUFACTURING METHOD | 2018 |
|
RU2746154C1 |
