What are the main components of stand up packaging?
Plastic stand up packaging bags everyone is familiar with it, almost every day we will deal with it, its existence has brought us great convenience, so it is deeply loved by the majority of people. It is called a plastic bag mainly related to its production of raw materials and effects, and its tensile properties and toughness can also be related to the production of raw materials by stand up pouches wholesale. What are the ingredients of the plastic package?
First, synthetic resin. It is the most important component of plastic stand up packaging bags, and its content in plastic bags is generally 40% to 100%. Because of its high content, the nature of the resin determines the nature of the plastic, so people often think of resin as a synonym for plastic. In addition to a very small percentage of plastic bags containing 100% of the resin, the vast majority of plastic bags also need to add other substances.
Second, filler, it is also called filler, it can improve the strength and heat resistance of plastic bags, and can reduce costs. For example, the addition of wood flour to the phenolic resin can greatly reduce the cost, making the phenolic plastic one of the cheapest plastics, while also significantly improving the mechanical strength.
Third, plasticizers. It can increase plasticity and flexibility of plastics, reduce brittleness, and make plastic stand up packaging packaging bags easy to process and shape. Plasticizers are generally compatible with resins, non-toxic, odorless, and light- and heat-stabilized high-boiling organic compounds, the most commonly used are phthalates. For example, when producing PVC plastic packaging bags, soft plastic PVC packaging bags can be obtained by adding more plasticizers. If no plasticizer is added or less, rigid PVC plastic packaging bags are required.
Fourth, stabilizers. In order to prevent the synthetic resin from being decomposed and destroyed by light and heat during processing and use, and to extend the service life, stabilizers must be added to the plastic. Stearate and epoxy resins are commonly used.