29 Jan 2026
Some products create gas after they are packed. If the gas stays in the bag, the bag becomes puffy. It may look bad, take more space, or even burst. A one-way degassing valve lets the gas out but keeps air from going in.
Coffee bags are the most common example. Freshly roasted coffee releases carbon dioxide. This happens for several days after roasting. If the bag is fully sealed, pressure will build up. But if the bag is opened, oxygen will change the flavor. With a valve, gas goes out and the coffee stays fresh.
Fermented or active food also needs help.Products like enzyme drinks, probiotic powder, or starter mixes make gas during storage. A valve helps the bag keep its shape and protects the inside.
Some pet food, high-protein feed, or oily ingredients also release gas slowly. Heat can make this happen faster. A degassing valve can stop the bag from swelling.
In short, if a product makes gas and still needs to stay sealed, wojin one way degassing valve is the right choice.
Originally published 29 Jan 2026, updated 29 Jan 2026.
Blog
The important role of valve applicator in coffee packaging
28 Apr 2026Valve press machines can precisely install one-way exhaust valves, helping coffee businesses improve production efficiency and ensure product freshness.
WOJIN Participates in HOTELEX 2026
30 Mar 2026WOJIN showcased the degassing valves and valve applicator at HOTELEX 2026, connecting with global customers and gaining insights into coffee packaging needs.
Starting 2026 with a Clear Plan
27 Feb 2026After the Spring Festival holiday, we returned to work with a company-wide meeting to review last year’s performance and set clear and practical goals for 2026.
Contact
Address
Unit 3, No.1, West Side of Jielong Street, Jiyue Industrial Zone, Leliu Port, Xinming Village, Leliu Town, Shunde District, Foshan City, Guangdong, P.R. China
E-mail
sales@wojinvalve.com
Phone
0086 138 2555 9141
