Blog
NEWS CENTER
What do you know about square-bottom bags?
Publication Time:
2021-03-05 10:54
Square Bottom Bag It is a bag that appears square from the outside, and the bottom is also square. Although it is soft packaging, it still maintains its shape after holding the product, making the entire bag look three-dimensional and beautiful. The name of the square bottom bag comes from its square bottom, unfolding like a box with different lengths, widths, and heights, but its softness is different from that of a cardboard box. Square bottom bags need to be customized according to the different specifications and sizes of the products to be packaged.
Polymers (or synthetic resins) are Square Bottom Bag the main component. In order to improve the performance of plastics, various auxiliary materials, such as fillers, plasticizers, lubricants, stabilizers, colorants, etc., should be added to the polymer to meet people's requirements for plastics. Generally, square bottom bags are made of synthetic resins, and the bottom is named square. It unfolds like a cardboard box, with different lengths, widths, and heights, and is "tailor-made" according to the different sizes of the products to be packaged.
Square Bottom Bag Generally, there are five sides: front and back, two sides, and bottom. The unique structure of the square bottom bag determines the convenience of packaging three-dimensional goods or square products. This bag not only considers the packaging significance of plastic bags but also fully expands new packaging concepts, so it is now widely used in daily life and production.
Square Bottom Bag There are two polymer structures:
1. Linear structure; polymers with this structure are called linear polymers.
2. Three-dimensional structure; these are called three-dimensional polymers. Some polymers have branches, called branched polymers, which belong to the linear structure. Some polymers have cross-linking between molecules, but the cross-linking is less, called network structure, which belongs to the three-dimensional structure. The two different structures exhibit two opposite properties.
Related News
VCI rust preventive paper - A new type of rust preventive packaging material
VCI rust preventive paper is a new type of rust preventive packaging material made by coating rust preventive base paper with volatile corrosion inhibitor (VCI).
How to use and precautions for anti-rust film bags
Rust preventive film bags are a new type of packaging material widely used in the packaging industry. They are specifically designed to prevent corrosion, oxidation, and contamination of industrial metal products during storage. The following is a detailed introduction to rust preventive film bags:
Detailed introduction to VCI rust preventive paper
VCI rust preventive paper (Volatile Corrosion Inhibitor Paper) is a special packaging material that protects metals from corrosion by releasing volatile rust preventive molecules (VCI). The following is a detailed introduction to VCI rust preventive paper:
High-end packaging solutions: A crucial element in building brand image
High-end packaging solutions, especially anti-rust film bags, are key to shaping brand image. Exquisite packaging not only protects product quality but also enhances consumer brand recognition. Let's explore this field together and discover the unlimited possibilities of high-end packaging!
Easy to Use: Packaging Techniques with PE Stretch Film
This article provides a detailed guide on using PE stretch film for packaging, making it easy for you to get started. Whether it's moving, storage, or transportation, mastering these tips will make packaging so simple!
Environmental Characteristics and Sustainable Packaging Solutions of PE Stretch Film
This article explores the eco-friendly characteristics of PE stretch film and how sustainable packaging solutions can promote its application. Through recycling, the use of bio-based materials, and the research and development of degradable products, we can work together to contribute to the protection of our planet.
Follow on Mobile
Address: No. 88, Lizhu Highway, Qianma Village, Liyang City, Changzhou City, Jiangsu Province (Changzhou Wanhe Technology Co., Ltd.)
Email:jszuomeibzkj@yeah.net
Tel:133 8286 2588
copyright © 2025 Jiangsu Zuo Mei Packaging Technology Co., Ltd.