4m Height One Way Vent Valve In PE Food Grade Protect Coffee Bag From Damp
| Product Detail |
| Model Name | One way vent valve |
| Model | A1 |
| Function | Protect coffee bag from damp |
| Material | Polyethylene and PVC gasket |
| OEM/ODM | Great , welcome |
| Usage | Coffee bags |
| Technique | Plastic injection mould |
| Outer diameter | 23mm |
| Height | 4m |
| Color | Clear , white , customized color |
| Payment method | Western Union,Bank Transfer , letter of credit |
| Shipping way | By sea , or by express(usually for sample order) |
| Package | Inner poly bags and standard export carton box |
| Packing box size | 50*33*43cm |
| One Way Vent Valve Picture |



| One way ventilation instruction |
The one way vent valve , it works that the outer air won't get into bags , and inner air could vent from
bags , release the air and protect bags from damp and expandation.
1. Usually sealed on coffee bags , coffee bean bags , cereal bags with one way vent valve
2. Foil-based laminated packaging , food flexible bags
3. Pet's food composition bags
4. Vacuum bags with valve could degassing air from bags
5. Seasoning sauce packing bags , air vent , keep bags from damp
| Advantage |
1. Some food will produce volatilized air after roast , with one way vent valve could vent air while outer air
won't get into bags , will upmost protect the commodity
2. 100% food grade PE material , could used for food softbags
3. Guard against damp , prolong the storage time of commodity
4. Preserves aroma characteristics within the package during shelf life