What are the main materials used in soda water BIB packaging? Do these materials meet food safety standards, especially what are the requirements for chemical stability and gas barrier properties of soda water?
As an important form of modern food packaging technology, soda water BIB (Bag-In-Box) packaging is widely popular not only because of its economical, easy to transport and store characteristics, but also because it can effectively protect the unique flavor and quality of carbonated beverages such as soda water. Our company, as a leader in this field, is committed to continuous development and providing high-quality products and comprehensive solutions to local and global customers. We are well aware that in the selection and application of soda water BIB packaging materials, technology and safety are equally important. We use a series of high-performance, food safety-compliant materials to ensure the optimal chemical stability and gas barrier properties of soda water.
The core structure of soda water BIB packaging is usually composed of multiple layers of composite materials, which are carefully designed and selected to meet the requirements of soda water for gas barrier properties, chemical stability, mechanical strength and recyclability. Specifically, the main materials of soda water BIB packaging include:
Inner layer material (contact layer): usually polymer materials such as polyethylene (PE) or ethylene-vinyl alcohol copolymer (EVOH). PE has become a common inner layer material for soda water BIB packaging due to its good chemical stability and barrier properties, especially its good ability to retain oxygen and carbon dioxide. EVOH, with its extremely high gas barrier properties, especially oxygen barrier properties, can provide better protection under certain special needs.
Barrier layer: For soda water packaging with high barrier requirements, one or more layers of barrier materials, such as aluminum foil (Al) or multi-layer co-extruded barrier composite materials, will be added to enhance the barrier effect against oxygen, light and moisture, and further extend the shelf life of the product.
Outer layer material: The outer layer material mainly protects the inner layer from external physical damage, while providing certain printing and aesthetics. Commonly used materials include polypropylene (PP) or polyester (PET), which not only have good mechanical strength, but are also easy to print and convenient for displaying brand information.
Adhesive: The layers of material are bonded by special adhesives to ensure the integrity and sealing of the packaging. These adhesives must also meet food safety standards to avoid contamination of soda water.
Whether the materials meet food safety standards
All materials selected by our company strictly follow international food safety standards, including but not limited to FDA (U.S. Food and Drug Administration), EU (European Union) regulations on food contact materials, and China's GB 4806 and other relevant standards. These materials need to undergo strict toxicology and migration tests during the production process to ensure that they will not release harmful substances when in contact with soda water and other foods, thereby protecting the health of consumers.
Requirements for chemical stability and gas barrier properties of soda water
Chemical stability: As a carbonated beverage, soda water contains a high carbon dioxide content, as well as sugar, spices and other ingredients that may be added. Therefore, packaging materials must have excellent chemical stability, be able to resist the erosion of these ingredients, and avoid chemical reactions that cause flavor changes or the generation of harmful substances. The PE, EVOH and other materials we use are specially treated to effectively resist acid and alkali corrosion, ensuring that the original flavor of soda water is not affected.
Gas barrier properties: The quality of soda water depends largely on the amount of carbon dioxide dissolved in it. Therefore, packaging materials must have good gas barrier properties, especially the ability to retain carbon dioxide, to prevent the "gassing" phenomenon caused by gas escape, so as to maintain the taste and bubble of soda water. High-barrier BIB packaging, such as composite materials containing EVOH or aluminum foil, can significantly reduce gas permeability, ensuring that soda water still maintains the best taste after long-term storage.
Our company is equipped with an advanced-designed bag-in-box production line, which can customize and produce BIB packaging products of various specifications and performances according to customer needs, and flexibly respond to market demand. Team members have more than 15 years of industry experience, deep technical knowledge, and are familiar with various market applications. They can provide customers with a full-chain solution from material selection, structural design to production and manufacturing. Especially in the field of soda water BIB packaging, we can not only provide high-quality materials that meet food safety standards, but also ensure that each batch of products achieves the best performance indicators through precise process control and strict quality control processes.
With deep technical accumulation, advanced production equipment and strict compliance with food safety standards, our company provides reliable BIB packaging solutions for sensitive products such as soda water. We work closely with our customers to continuously explore new market opportunities and are committed to promoting the continuous progress and development of the food packaging industry.