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China Printed Composite Bags Factory - Eco-Friendly Zipper & Air Valve Bags from Trusted Suppliers

Discover our premium printed composite bags, a versatile solution developed by top suppliers in China. These bags include options such as printed composite zipper bags and printed composite air valve zipper bags, each crafted from eco-friendly, multi-layered materials. Renowned for their exceptional sealing and protective features, these bags are customizable with unique printing designs, making them perfect for packaging a variety of products, including food and daily chemical goods. With both practicality and visual appeal, our bags are ideal for businesses seeking high-quality packaging solutions directly from a reliable factory, **Material:** PA+PE (adaptable based on demand), **Colour:** Transparent with printed content, **Single-side thickness:** 80 μm, **Texture:** Smooth surface

Product Detail

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

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Packaging Project

Frequently Asked Questions

Q1: What are the size tolerances for these composite bags?

Both the length and width tolerances are strictly controlled within ±2 mm to ensure precise packaging consistency.

Q2: What is the standard thickness and tolerance of the packaging material?

The thickness specification features a round dot pattern design measuring 80±8% μm, ensuring uniform material distribution and reliable strength.

Q3: How do you guarantee the quality of the bag printing?

We ensure that all texts and patterns are highly clear with uniform color. The print registration deviation is kept under ≤0.3mm overall, and ≤0.2mm for the main parts of the artwork.

Q4: What is the heat seal strength of the composite bags?

The bags are designed for heavy-duty sealing. The heat seal strength reaches ≥35N in both the lateral (TD) and longitudinal (MD) directions, with a heat seal width tolerance of 7±1.5mm.