What are the unique advantages of hanging hole bags in terms of moisture resistance and durability, and what packaging needs can they meet?
Publish Time: 2026-01-29
In retail outlets, especially supermarkets, convenience stores, and chain pharmacies, hanging hole bags have become the preferred packaging solution for small items due to their convenient hanging display function and excellent physical properties. These bags are typically made of OPP and PE composite materials, with a 3-5 cm wide reinforcing layer at the top, and can be perforated with round or perforated holes for easy hanging directly on shelf hooks. They can also be customized with flat or self-adhesive openings, balancing sealing and ease of use. Their unique advantages in moisture resistance and durability make them widely adaptable to the packaging needs of various products, from food to electronic accessories.1. OPP/PE Composite Structure: Building an Efficient Moisture BarrierOne of the core advantages of hanging hole bags is the superior moisture resistance provided by their material combination. OPP film boasts high transparency, excellent gloss, and good airtightness, effectively blocking water vapor penetration. The inner PE layer provides excellent heat-sealing performance and flexibility, ensuring a strong seal and preventing cracking. The two layers are tightly bonded through a dry lamination process, forming a multi-layered structure that is "rigid on the outside and flexible on the inside," resulting in a significantly lower water vapor permeability than ordinary single-layer plastic bags. For goods requiring moisture protection—such as dry foods like biscuits, nuts, tea, coffee powder, and seasoning packets—or moisture-sensitive products like electronic components, batteries, and small hardware parts, hanging hole bags effectively extend shelf life and prevent moisture damage or oxidation.2. High Strength and Durability: Tear-resistant, Puncture-resistant, and Reliable Load-BearingHanging hole bags also excel in durability. The OPP material itself has high tensile strength and tear resistance, while the PE layer gives the bag good impact resistance and flexibility, preventing brittleness even at low temperatures. The top 3-5 cm clip area is thickened or double-layered, significantly enhancing the load-bearing capacity of the hanging hole area, allowing for stable hanging of goods weighing 100-300 grams or even more without tearing or deformation. Furthermore, both the round hole and the more robust airplane-shaped hole design are stress-optimized to prevent cracking at the hole edges due to hook friction. This structural reliability makes hanging hole bags suitable for packaging small tools, stationery, toys, cosmetic samples, mobile phone accessories, and other items with a certain weight or sharp edges.3. Flexible Sealing Design: Balancing Sealing and User ExperienceHanging hole bags are available in both flat-top and self-adhesive-sealed versions to meet the sealing needs of different products. Flat bags are suitable for single use or when the contents are independently sealed, offering low cost and high production efficiency; while self-adhesive-sealed bags allow consumers to open and close them multiple times, making them particularly suitable for items that need repeated access, such as snacks, face masks, and bandages. The self-adhesive-sealed design maintains good dust and moisture protection even when closed, improving the end-user experience while reducing the risk of contents exposure.Based on OPP/PE composite material, hanging hole bags achieve a high balance between moisture resistance and durability through scientific structural design and process optimization. They are not only a "protective shell" for goods but also a "silent salesperson" at the retail terminal. In the modern packaging trend that prioritizes efficiency, environmental protection, and user experience, hanging hole bags, with their practicality and adaptability, continuously provide safe, aesthetically pleasing, and economical packaging solutions for various small items, becoming an indispensable "invisible contributor" on supermarket shelves.
