Common sense of solvent-free laminating adhesive
Solvent-free adhesive manufacturers believe that solvent-free adhesive is one of the basic elements of the composite process, and its main impact is reflected in the whole process of production and use. Its main influence can be reflected in the following aspects or indicators, such as: 1) the range of the substrate and the use of the composite film; 2) working temperature and viscosity; 3) mix ratio and tolerance; 4) normal temperature viscosity and working viscosity (Working temperature);5) curing temperature and curing time; 6) transparency; 7) peel strength; 8) friction coefficient; 9) Functionality (such as retort resistance, medium resistance, etc.) 10) heat sealing strength; 11) weather resistance, etc.
Solvent-free laminating adhesiveManufacturers believe that solvent-free adhesive is one of the basic elements of the composite process, and its main impact is reflected in the whole process of production and use. Its main influence can be reflected in the following aspects or indicators, such as: 1) the range of the substrate and the use of the composite film; 2) working temperature and viscosity; 3) mix ratio and tolerance; 4) normal temperature viscosity and working viscosity (Working temperature);5) curing temperature and curing time; 6) transparency; 7) peel strength; 8) friction coefficient; 9) Functionality (such as retort resistance, medium resistance, etc.) 10) heat sealing strength; 11) weather resistance, etc.
The solvent-free laminating adhesive manufacturer said that the process adaptability of the adhesive includes the applicability (or selectivity) of the substrate, the adaptability of the composite film (bag) and the adaptability to the environment. The adaptability of the substrate mainly refers to which composite substrates or structures the adhesive is suitable for; the adaptability of the composite film (bag) mainly refers to which uses or occasions the composite film (bag) is suitable for, such as general or special, functional packaging or non-functional packaging. The adaptability to the environment mainly refers to the requirements of the adhesive for the operating environment and the storage, transportation or use environment of the composite film (bag).
Solvent-free laminating adhesive manufacturersRepresentationThe development of solvent-free composite adhesives in China shows a trend of differentiation. On the one hand, more and more companies are launching special products suitable for various substrates and special purposes; on the other hand, some companies are launching so-called integrated adhesives with unified functions to facilitate users' selection and use.
The process stability of the adhesive refers to two aspects. One is the stability of the quality of the adhesive itself, that is, the consistency of the performance indicators of each batch of products after long-term use. The other is the stability of the quality of the composite product, that is, the peel strength of the composite film (bag) and other indicators decay slowly enough to meet the needs of long-term storage or extended shelf life.
Solvent-free laminating adhesive manufacturersRepresentationThe process operability of the adhesive refers to the controllability and convenience of the adhesive operation during the composite operation, as well as the controllability and convenience of the subsequent operation (I. e., cutting or bag making). These factors are related to viscosity (including normal temperature viscosity and working viscosity), temperature, tolerance and friction coefficient.
Adhesives are an important factor in the safety of composite products. Different uses have different requirements for safety. For food and drug composite packaging, safety is the primary consideration, while other types of composite films (bags) may put other indicators in a more important position. Safety is directly related to the type of adhesive (such as polyester or polyether), but it is also closely related to the content, shelf life, composite structure, and the choice of composite process (such as multi-layer composite using different composite processes).
Related News