Custom China Vacuum Zipper Bag with Flat Valve - OEM/ODM Suppliers & Factory for Food Storage
Parameter
| Serial Number | Indicator Name | Indicator Value |
|---|---|---|
| 1 | Deviation | ±2.5 mm |
| 2 | Width deviation | ±2.5 mm |
| 3 | Thickness and deviation | round dot: 210±20 μm |
| 4 | Usage temperature | -20 ~ 100℃ |
| 5 | Oxygen permeability | PA/PE < 30, PET/PE < 40cm³/(m² · 24h · 0.1MPa) |
| 6 | Impact resistance | >0.8J |
| 7 | Cutting resistance | ≥5N |
Size
| Width * Length | Weight | Box gauge (47 * 34 * 30cm) |
|---|---|---|
| 22 * 21cm | 11g | 1300pcs/box |
| 26 * 28cm | 16.3g | 1000pcs/box |
| 26 * 34cm | 19g | 800pcs/box |
| 30 * 34cm | 22g | 700pcs/box |
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Frequently Asked Questions
Q1: What materials are the vacuum zipper bags made of?
A1: These bags are constructed from premium PA/PE or PET/PE composite materials, which offer excellent oxygen barrier properties, durability, and high puncture resistance.
Q2: What is the operating temperature range for these bags?
A2: The bags are highly versatile and can safely withstand temperatures ranging from -20℃ to 100℃, making them perfect for freezer storage as well as sous-vide cooking.
Q3: How do I extract air using the flat valve?
A3: First, seal the bag tightly using the provided sealing clip. Then, place either a manual suction pump or an electric pump directly over the flat valve and extract the air until the desired vacuum level is reached.
Q4: Are these vacuum zipper bags reusable?
A4: Yes, they are designed for multiple uses. You can clean them with mild soap and warm water, air dry them completely, and reuse them for food or item storage.
Q5: Can I use these bags for liquid or moist foods?
A5: Yes, but for liquids, it is recommended to pre-freeze them slightly before vacuuming, or use a pump with a green liquid filter to prevent moisture from clogging the flat valve.
Q6: What sizes are available and how are they packaged?
A6: Standard sizes include 22*21cm, 26*28cm, 26*34cm, and 30*34cm. They are bulk-packed in boxes ranging from 700pcs to 1300pcs depending on the bag dimensions.

