Flat-folded personal respiratory protection devices and...

A - Human Necessities – 62 – B

Patent

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Details

A62B 18/02 (2006.01) A41D 13/11 (2006.01)

Patent

CA 2368844

Respiratory devices having first and second lines of demarcation bisected by a fold. The devices are capable of being folded in a first substantially flat configuration for storage (e.g., in a pocket) and are capable of being unfolded in a second ready-to-wear configuration so that a portion of the device covering the nose and the mouth is off-the-face. Processes for making such devices include folding a preform over a bisecting axis and cutting the preform at desired angles and sealing the cuts together to form the mask.

L'invention concerne des dispositifs de protection respiratoire comprenant deux lignes de démarcation coupées en deux par un pli. Ces dispositifs peuvent être pliés dans une première configuration sensiblement plate afin d'être rangés (par exemple, dans une poche). Ces dispositifs peuvent également être dépliés dans une seconde configuration prête à porter, de sorte qu'une partie du dispositif recouvrant le nez et la bouche soit écartée du visage. L'invention concerne également des procédés de fabrication de ces dispositifs qui consistent à plier une préforme sur une bissectrice, à découper la préforme selon des angles voulus et à fermer les découpes les unes sur les autres de façon à former le masque.

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