China Custom kraft paper envelope bags Manufacturers, Suppliers, Factory

GRS is a global recycling standard, as well as an international, voluntary and complete product standard.

Honeycomb paper is made according to the principle of honeycomb structure in nature. It is a new type of environmental protection and energy saving material that connects corrugated base paper into numerous hollow three-dimensional hexagons by gluing method, forming a whole stressed part - paper core, and gluing face paper on both sides.

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.

Zeal X, a professional manufacturer specializing in eco-friendly paper packaging, officially announced the launch of its upgraded Kraft Paper Mailer Bag series, designed for modern e-commerce, fashion, and logistics industries seeking sustainable, durable, and customizable solutions.

What's a mailer bags?I believe that many people say that in the rapidly developing logistics market, the express delivery industry has also undergone greater changes, more people choose online shopping, and more people choose to mail goods to customers, in order to meet the needs of the market. How should we choose the right mailer bag? When choosing a Courier bag, what kind of quality is more suitable? Because the packaging of an express is constantly changing, the small details of the express industry, the mailer bag has become more suitable for our attention.

Kraft paper bag is a composite material or pure kraft paper packaging container, non-toxic, tasteless, pollution-free, low-carbon environmental protection, in line with national environmental standards, with high strength, high environmental protection, is one of the most popular environmental protection packaging materials in the world. Kraft paper bag is made of wood pulp paper as the base material, the color is divided into white kraft paper and yellow kraft paper, which can be sprayed with a film on the paper using PP material to play a waterproof role, and the strength of the bag can be made of one to six layers according to customer requirements, printing and bag-making integration. The opening and bottom sealing methods are divided into heat sealing, paper sealing and paste bottom.