초록 ▼

A one-way degassing valve (4) for containers of aromatic products such as coffee and the like, comprising a valve body (5, 6), a valve element (12) and a filter (17), comprising a selective filter layer (21a), preferably consisting of activated charcoal, which allows the passage of low molecular wei

A one-way degassing valve (4) for containers of aromatic products such as coffee and the like, comprising a valve body (5, 6), a valve element (12) and a filter (17), comprising a selective filter layer (21a), preferably consisting of activated charcoal, which allows the passage of low molecular weight gases, such as carbon dioxide, and retains high molecular weight gases that constitute the product's aroma, and an oxygen and CO2 adsorbing layer (21b), able to eliminate the residual oxygen present in the container and suitably reduce the amount of CO2.

대표청구항 ▼

1. An airtight container for products that develop odorous gases, with a one-way degassing valve provided with at least one selective filtering layer which prevents aromas or odours from escaping, and at least one oxygen and carbon dioxide adsorbent layer able to eliminate the residual oxygen and ca

1. An airtight container for products that develop odorous gases, with a one-way degassing valve provided with at least one selective filtering layer which prevents aromas or odours from escaping, and at least one oxygen and carbon dioxide adsorbent layer able to eliminate the residual oxygen and carbon dioxide present in the container.