China Printed Composite Bags Supplier - Custom Eco-Friendly Factory Zipper Bags for Food and Daily Chemicals
Parameter
| Serial Number | Indicator Name | Indicator Value |
|---|---|---|
| 1 | length tolerance | ±2 mm |
| 2 | width tolerance | ±2 mm |
| 3 | thickness tolerance | round dot:80±8% μm |
| 4 | heat seal width tolerance | 7±1.5mm |
| 5 | printing quality | text and patterns are clear, with uniform color; registration deviation≤(0.3mm),main part(0.2mm) |
| 6 | peel strength | NY/PE TD:≥3.0N |
| 7 | heat seal strength | 1.lateral(TD):≥35N 2.longitudinal(MD):≥35N |
Product Image
Packaging Project
Frequently Asked Questions
What are the standard length and width tolerances for these bags?
The length and width tolerances are strictly controlled within ±2 mm to guarantee dimensional stability and consistency during automated packaging processes.
What is the thickness tolerance for the round dot?
The thickness tolerance for the round dot is specified at 80±8% μm, ensuring uniform material distribution and reliable protection.
How is the printing quality of the composite bags monitored?
We ensure texts and patterns are clear with uniform color. The registration deviation is strictly limited to ≤0.3mm, and ≤0.2mm for the main parts.
What is the peel strength of the NY/PE TD material?
The peel strength of the NY/PE TD composite layers is certified to be ≥3.0N, preventing delamination under normal handling conditions.
What are the heat seal strength and width parameters?
The heat seal width tolerance is 7±1.5mm. The heat seal strength is ≥35N for both lateral (TD) and longitudinal (MD) directions to prevent any leaks or bursting.

