Suppliers China Personalilzed Drawstring Bags Manufacturer make drawstring bag how to make a drawstring backpack
Details for China make drawstring bag how to make a drawstring backpack

make drawstring bag how to make a drawstring backpack

make drawstring bag how to make a drawstring backpack
Product Type:

Bags & Luggage >> Handbag

Keyword: Drawstring bags
If you are interested, please contact us!
MOQ: 5000
FOB price: 0.25
Port: ningbo
Payment Terms: T/T
Packing: 300
Delivery Time: 15
Detailed Product Description

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  5min after the test to see if there is fluid leaking out, and then flip the bag, tests were carried out on the other side of the filter paper. 2 water decompression method (true 
Air France) This method also includes vacuum pumps and vacuum generators law, often used to test the air content of more complex bag. (1) vacuum measurement method 
A transparent test device consists of a pressure vessel, the sample holder and a vacuum system (vacuum pump, vacuum gauge, etc.) components. This method has the following disadvantages: shape 
The length of time a vacuum, and unstable; good sealing performance; pressure pointer display, low accuracy. So now being phased out. (2 
) Vacuum generator method (use of equipment: Ming Wei detection MFY-01 seal tester) This method is widely applied in the flexible packaging industry, it 
Using jet principle, the positive pressure air becomes a source of negative pressure to form a stable, high-precision real-time display of electronic pressure sensor to test the degree of vacuum within the container, the micro 
Computer control, test parameters (vacuum and hold time) can be arbitrarily set, shorter time to reach vacuum, vacuum remained stable, sealed 
Good performance. Test method according to GB/T15171-1994 Flexible sealing member 3 Test Procedure: Under the action of water, the material properties of the outer layer

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Company Name: China Personalilzed Drawstring Bags Manufacturer  
Company Address: hauqi 
Zip: 325800 
Contact Person: huaqian 
Telephone Number: 18868955478 
Fax Number: