BAGS

Bag Types & Materials

Name: Bag Types & Materials
Brand: Chung Tair Packing

The bag types we produce, which ones can be made in small runs, and the properties of common packaging materials.

Packaging Bags

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Send us photos or requirements of your product and we'll recommend the right bag style, material and packaging method.

Overview

[Bag types available in small runs] L-seal bags, three-side seal bags, stand-up flat pouches, stand-up zipper bags (with/without hang hole), flat bags (with/without hang hole), flat zipper bags (with/without hang hole), back-seal bags and gusseted back-seal bags — all can be ordered in small quantities. Small runs use digital color printing; spot colors and metallic colors are not available, and bags above a certain size cannot be made in small runs. Please ask for details.

[Other bag types] Five-side seal bags, new-style flat-bottom bags (new zipper tear strip) and all kinds of film rolls. The new-style flat-bottom bag stands neatly and adds side display space; we can also make the popular stand-up drink pouch to get your product talked about.

[Shaped bags] Want to stand out from other bags on the market with a shape that's all your own? Shaped bags require a custom die; the die fee depends on how complex the shape is. Please ask us about quantities.

[Flexible spout pouches] Spout / duckbill pouches (flexible material, refill packs) are made to order only, with no small runs. Please ask for details.

[Other styles] One-way valve bags, matte paper (VOP MAT), tissue paper / Unryu paper / bamboo-fiber paper bags (stock bags), protective poly flower sleeves, creative window stand-up pouches, premium coffee valve zipper bags (stock bags), foil bags with shaped windows, kraft paper bags with shaped windows, special shaped bags, face-mask sachets and clear PVC boxes. Bags in any material can be custom made (regular or small print runs).

[Laminate structure] A typical laminated pack has three layers: (1) Outer layer: adds mechanical strength, heat resistance, printability and optical properties. (2) Middle layer: delivers the main function of the laminate, such as barrier, light-blocking and aroma retention. (3) Inner layer: mainly provides sealing, then pressure, drop and airtight performance.

*The materials below are for reference; please contact us for details. For any bag-making question, call us or send your artwork on LINE.

Specifications

BOPP	High tensile strength but low tear strength; chemically stable, non-toxic, odorless; excellent moisture barrier
CPP	High clarity, gloss and stiffness for great shelf display; good heat resistance
BOPET	One of the highest tensile strengths of all plastic films; very high barrier to air and odors, an aroma-retaining material
VOP	A better gas and moisture barrier than KOP; prevents fat oxidation, discoloration and fading; oil-resistant, aroma-retaining, moisture-proof, anti-oxidation, rust- and insect-proof
PE	The most widely used plastic film; soft, highly stretchable and low in hardness
VMPET / VMCPP	High-barrier film with excellent aroma retention and light-blocking; prevents food from oxidizing and spoiling
Aluminum Oxide (AlOx)	Excellent gas barrier, aroma retention and chemical resistance; suitable for oily liquids and volatile products
AL (Aluminum Foil)	An excellent barrier material — blocks light, moisture and air