Hot melt adhesive online viscometerIt is an industrial instrument designed specifically for real-time monitoring of the viscosity of hot melt adhesives and other fluids. It achieves high-precision measurement through vibration or electromagnetic micro torsional vibration principles and is widely used in hot melt adhesive production, coating processes, and adhesive research and development. The core of the equipment is based on the principle of shear stress. After the sensor probe (vibrating rod or vibrating plate) is inserted into the fluid, the vibration amplitude changes due to the viscous damping effect. High viscosity fluids attenuate vibrations faster, and the system supplements energy through circuits to maintain probe resonance frequency and constant amplitude, thereby calculating fluid viscosity. Some models use electromagnetic micro torsional induction current technology, where the probe generates torsional oscillations in the fluid, converting resistance changes into electrical signals, and outputting real-time viscosity data through software algorithms.
Hot melt adhesive online viscometerThe main application scope is:
1. Adhesive manufacturing industry
This is the most direct and core application area.
Production process monitoring: Real time monitoring of viscosity changes during the polymerization, mixing, and melting processes of hot melt adhesives (such as EVA, PUR, PA, PO, etc.) to ensure consistency between product batches.
Formula development and optimization: Through continuous viscosity temperature curves, help R&D personnel understand the rheological behavior of different formulas under processing conditions, and accelerate the development of new products.
Quality Control (QC): As an online monitoring tool for key quality parameters, it promptly detects production abnormalities (such as excessive cross-linking, degradation, and compositional deviations) and reduces the production of non-conforming products.
2. Packaging industry
Hot melt adhesive is widely used for bonding various packaging, and its viscosity directly affects the coating effect and bonding strength.
Carton/carton forming: On automatic box pasting machines and carton forming machines, monitor the viscosity of hot melt adhesive to ensure good flowability for uniform coating, while having sufficient cohesion to achieve rapid bonding and high strength.
Label attachment: On the label attachment line for beverage bottles, food packaging, etc., ensure that the hot melt adhesive can quickly wet the label and form a strong bond.
Food packaging, such as Tetra Pak and sterile packaging, requires high hygiene and adhesive reliability for adhesives. Online viscosity monitoring is key to ensuring food safety and packaging integrity.
3. Sanitary product manufacturing industry
Disposable hygiene products: used on the production line of sanitary napkins, diapers, and adult incontinence products to monitor the viscosity of hot melt adhesive in areas such as waist circumference, leak proof edges, and absorbent cores. Accurate viscosity control is crucial for the comfort, leak resistance, and production efficiency of products.
4. Wood and Furniture Processing
Edge banding and splicing: In the edge banding machine and splicing line of panel furniture and wooden flooring, real-time monitoring of the viscosity of hot melt adhesive is carried out to ensure that the wood surface can be fully wetted, forming a strong bond and preventing glue cracking.
Artificial board production: used to monitor the application process of adhesives in the production of particleboard, medium density fiberboard (MDF), and other materials.
5. Automotive and Electronic Assembly
Automotive interior: used for bonding interior parts such as instrument panels, door panels, and ceilings, ensuring that the bonding strength can still be maintained in high temperature and high humidity environments.
Electronic component fixation: In the assembly of certain electronic products, hot melt adhesive is used for temporary or permanent fixation of components, and online monitoring can ensure process stability.
6. Textile and non-woven fabric industry
Composite material production: When producing multi-layer composite non-woven fabrics such as medical protective materials, filter materials, and sanitary materials, hot melt adhesive is used for lamination and bonding. Online viscometer can ensure even distribution of glue and firm adhesion.