The production of eight-sided sealed coffee bags first requires the selection of appropriate materials. Common materials include OPP, PE, CPP, PET, nylon, pure aluminum, and aluminum-coated materials, etc. The choice of these materials will affect the barrier performance, heat sealing performance, moisture-proof performance, and transparency of the packaging bag. For example, pure aluminum or aluminum-coated materials can provide good oxygen and light barrier properties, while nylon materials have high strength and toughness.

Eight-sided sealed coffee bags are usually printed to increase the product's attractiveness and brand recognition. The printing process includes electro-engraving copper plate high-speed printing, which can achieve high-definition pattern and text printing.

Barrier performance improvement: the composite of matte film, aluminum plating and PE can synthesize the barrier performance of the three. The aluminized layer can effectively block the penetration of light, ultraviolet rays and gases, and the matte film can further enhance this blocking effect, while PE can prevent the penetration of substances such as moisture, thereby extending the shelf life of the packaged item. For example, for some drugs or foods that are sensitive to light and oxygen, this composite film can provide better protection.
Both appearance and practicality: the matte effect brought by the matte film makes the appearance of the package more textured and improves the grade of the product. The metallic luster of the aluminized layer increases the visual appeal of the package, while the utility of PE ensures the flexibility and durability of the package during use. 

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Free sample time:1-3 Days
Lead time:About 15-20 Days
Shipping time:5-7 working days

Free sample time:1-3 Days
Lead time:About 15-20 Days
Shipping time:5-7 working days

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Application: Wolfberry tea/tea/snack/candy/foods packaging
Material: PET/VMPET/PE,PET/AL/PE,OPP/VMPET/PE,OPP/AL/PE,kraft paper/PET/PE
Color: Accept your design
Printing: CMYK (Or 1-8 Sport colors are available)