Plastic Zip Pouch Bags are a type of openable packaging bag based on polymer films. They typically feature a press-to-seal structure, with a track-type interlocking design at the bag opening for easy opening and resealing. The main body is composed of multiple layers of composite plastic films; the combination of different materials enhances the bag's physical strength and overall stability. Composite structures are common in food packaging, meeting the basic load-bearing requirements for storing coffee beans, coffee powder, and other dry materials. Their manufacturing process is flexible, allowing for diverse adjustments to bag size, appearance, thickness, and color according to product category and brand requirements.

1. Sealing

The bag opening uses a press-lock seal made of PE or PP, with a gripping strength of 1.0–1.5N, resulting in superior sealing performance and reducing the rate of air ingress. Combined with the composite bag body, the Coffee Packaging Plastic Zip Pouch Bag maintains a stable seal even after repeated opening and closing, helping to maintain a dry environment for coffee beans. The seal track design allows for easy manual pressing by consumers and makes it easier to maintain a neat appearance when used for retail coffee packaging.

2. Stability

The Plastic Zip Pouch Bag uses a multi-layer composite structure of PET/PE or PET/NY/PE. A 30–60μm PET outer layer provides good stiffness, while a 50–80μm PE inner layer provides heat-sealing strength. The overall thickness is typically controlled within the 110–150μm range, ensuring the Coffee Packaging Plastic Zip Pouch Bag maintains its shape during transportation and shelf display. This thickness and structure meet the three-layer composite standard commonly used in food flexible packaging, making the bag less prone to deformation when storing coffee beans.

3. Moisture Resistance

By selecting a PET/VMPET/PE or OPP/VMPET/PE structure, water vapor transmission rate can be reduced to the conventional range of 2–3 g/m²·24h. The metallized layer (VMPET) enhances barrier properties, allowing the Coffee Packaging Plastic Zip Pouch Bag to better maintain stable relative humidity inside the bag when storing roasted coffee beans. The multi-layered composite effectively reduces moisture penetration, providing a reliable foundation for long-term storage, and functions as a moisture barrier in coffee powder packaging.

4. Abrasion Resistance

The PET outer layer possesses high mechanical strength, with a tensile strength typically reaching 130–180 MPa, making the Coffee Packaging Plastic Zip Pouch Bag less prone to scratches and damage during transportation, shelf placement, and bulk handling. The composite NY layer further enhances puncture resistance, reducing damage caused by the impact of sharp coffee bean edges inside the bag. The overall material system meets the abrasion resistance standards for food flexible packaging and is commonly used in export goods.

5. Customizable

Plastic Zip Pouch Bags can be customized to meet the needs of coffee businesses in various ways, including MDOPE/PE structures for increased stiffness, White PE inner layers for enhanced light-blocking properties, and PET/NY for increased pressure resistance. Bag types include flat bags, stand-up pouches, and foil bags. Size, thickness, printing patterns, and even the addition of an air vent can all be customized. Industry-standard printing resolutions reach 150–175 LPI, making the Coffee Packaging Plastic Zip Pouch Bag suitable for branded packaging.

1. Coffee Roasting Plants

The plastic composite structure allows Plastic Zip Pouch Bags to be used in the standard packaging process for roasted coffee beans. After cooling, coffee beans need to be placed in highly barrier-resistant bags to prevent air from affecting the flavor. This type of bag can be used with automated filling equipment in factories; the material's moderate coefficient of friction helps the equipment operate smoothly and is compatible with standardized production lines.

2. Chain Coffee Shops

Plastic Zip Pouch Bags provide shelf packaging solutions for coffee shops. The printed area can display product information, allowing consumers to more intuitively identify the roasting level and origin. Its self-sealing structure is suitable for small packages of coffee beans or sample packs, meeting the needs of rapid restocking, short-term storage, and counter display while maintaining the neatness of the packaging.

3. E-commerce Warehousing Centers

In e-commerce shipping scenarios, the multi-layered composite structure of Coffee Packaging Plastic Zip Pouch Bags reduces bag damage caused by pressure during transportation. The outer material's good rigidity makes it suitable for packaging together with cartons and corrugated shipping bags. The sealed structure keeps the bag closed until the customer receives the goods, preventing spillage and improving the receiving experience.

4. Supermarket Shelf Area

Plastic Zip Pouch Bags are suitable for display in regular food sections of supermarkets, where a neat appearance and long shelf life are required. Their barrier structure helps maintain the flavor of coffee beans and powder, preventing display problems caused by loose packaging during retail inventory management. Hanging holes can be added to the bag for use with different shelving arrangements.

5. Branded Gift Sets

In gift set and festive packaging scenarios, the printability of Plastic Zip Pouch Bags facilitates themed designs and limited-edition packaging. Customers can include different sized coffee sachets in gift boxes or sets. The flat surface of the bag allows for secure placement inside the gift box, creating a more unified overall look.