China Shipping Bag Manufacturers, Suppliers, Factory

Our custom envelope bags are made with a unique combination of kraft paper and glassine paper, providing a durable yet lightweight packaging solution. The kraft paper offers strength and a natural look, while the glassine paper ensures smoothness and a sleek finish. Ideal for eco-conscious businesses, these bags are perfect for a wide range of applications, offering a balance of functionality and style.

Corrugated paper bag is a commonly used packaging material, with excellent moisture, shock and protection properties. It is made of high-strength corrugated paper, which can withstand a certain amount of pressure and weight, ensuring that the postal items are not damaged during transportation. In addition, the black corrugated paper mailing bag also has the characteristics of strong confidentiality, which can protect the privacy and security of the mailed items. When mailing important documents or valuables, choosing a corrugated paper bag is a wise choice, which can provide you with reliable protection and convenient mailing experience.

Zeal X, a leading producer of packaging solutions, today announces the introduction of its Zeal X GRS-Certified 100% Recycled LDPE Plastic Bags, designed to elevate inner packaging standards with unmatched sustainability and customization. Ideal for apparel and gift packaging, these recyclable, non-toxic, odorless bags boast Global Recycled Standard (GRS) certification, ensuring high quality while minimizing environmental impact.

How to distinguish the cardboard material? Cartons are so common in daily life, more or less can not avoid contact with the carton, then what kind of carton is a good carton? 1. The best way is to weigh.

Glassine paper bags have emerged as one of the best alternatives to traditional plastic packaging due to their unique material properties and eco‑friendly advantages. Made from super‑calendered wood pulp, they feature a highly transparent, smooth, and dense structure that excels at blocking moisture, grease, and air while remaining thin yet durable. Unlike plastic bags, glassine bags can be processed through standard residential recycling streams and fully biodegrade in commercial composting systems, helping to prevent microplastic pollution and waste build‑up at the source. Moreover, glassine is sourced from FSC‑certified pulp, meets food‑contact safety standards, and offers excellent printability and customization, giving brands an environmentally responsible yet visually appealing packaging solution.

The selection of the material and thickness of the paper box is one of the key factors determining the quality of the paper box. The appropriate material and thickness can improve the stability and load-bearing capacity of the carton, and protect the packaged goods from damage. The main materials of the paper box include corrugated cardboard, grey cardboard, matte cardboard, linen cardboard, white cardboard and so on. Corrugated cardboard is the main material of the paper box, which is composed of paper core and face paper. The paper core is formed by the cross of vertical and transverse textures, which can provide the strength and rigidity of the cardboard. Face paper is paper covered on both sides of the paper core to protect the core from damage. Kraft paper board is a hard cardboard that has a strong load-bearing capacity after drying. According to the specific needs, you can choose the appropriate paper box material.