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Acrylic (PMMA) has extremely low surface energy and is widely recognized as a difficult to stick material. But by selecting the right type of hot melt adhesive particles and combining them with the correct surface treatment, it is entirely possible to achieve a firm bonding. The following is a complete selection and operation guide.
Sunlife hot melt adhesive particles are recommended in two directions: ① high initial adhesion APAO based models (good wetting properties for low surface energy materials), used in conjunction with primer; ② Polyamide (PA) based models (where polar groups form chemical bonds with acrylic) do not require a primer but are relatively expensive.
The recommended coating temperature is 170-180 ° C. The bonding should be completed within 10 seconds after coating, and the pressure should be maintained at 0.3-0.5MPa for 15 seconds. After 24 hours of curing, it reaches 90% of the final strength.
Q: Is it possible to stick directly without surface treatment?
A: No way. The peel strength without treatment is only 30-40% of that after treatment, and the adhesive will peel off after a few days. Choose at least one of primer or polishing.
Q: How much tensile force can acrylic panels withstand after bonding?
A: After being bonded with primer and PAPO based hot melt adhesive particles, the tensile shear strength can reach 1.5-2.0 MPa, which meets the requirements of most display racks and light box applications.
For binding books and periodicalsHot melt adhesive granulesWhat model? Book and magazine adhesive packaging is not a universal use of particles. It is important to choose the appropriate model based on the paper type, thickness, and machine type. Below is a list of common models. List of adhesive models for books and periodicals General EVA […]
The application methods of EVA hot melt adhesive and the variables to be considered: Due to the multi-functionality of a series of markets, the global hot melt adhesive market is growing. Before choosing hot melt adhesive for the process, please carefully review the type of application method and the variables to consider: EVA hot melt […]
hot melt adhesiveThe production formula of particles is not mysterious, the core isThe ratio of the four major componentsBasic resin (40-55%) provides cohesive strength, thickening resin (25-35%) provides viscosity, wax (10-20%) regulates flow and opening time, antioxidants and other additives (0.5-1%) ensure thermal stability. What really widens the gap is the route selection of the […]
Hot melt adhesive used for mattress assembly Hot melt adhesive makes assembling mattresses faster and easier. Because they are easy to handle, many manufacturers use adhesives to connect the foam around the mattress springs, connect the cushioning foam and insulation materials to the interior of the mattress body, and maintain the cushioning on the top […]
