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The opening time and solidification time are important specifications for selecting suitable EVA hot melt adhesive for specific applications. Choosing adhesive that meets the specifications will be one of the factors in achieving the required adhesive force.
Opening time:Defined as the time it takes to apply adhesive to the surface of a material until it forms a bond with other surface materials..
Solidification time:defined as the time required for two surfaces to form a bond and produce satisfactory adhesion..
The setting time and opening time depend on four main factors:
The current types of hot melt adhesives include EVA based adhesives, polyolefin based adhesives, polyurethane based adhesives, and polyamide based adhesives. Each type of adhesive has its own characteristics of opening time and solidification time. Most EVA hot melt adhesives have longer opening and setting times than other adhesives.
There are multiple methods to determine the opening time and setting time of glue. At the softening point, it becomes softer and flows into the flow when it reaches the melting point. Then, as it cools, the circulation moves the resilient material away from the melt.
Determine opening hours:
Apply adhesive to the surface of the material.Confirm setting time:
Spray the adhesive onto the surface of the material. Simultaneously place another surface on the bonding surface. Pressing time (2 seconds, 4 seconds); Seconds, 6 After a few seconds, we tore open both surfaces of the material. Dry and completely tear off the paper sample (in the shortest possible time), select the sample to determine the setting time of the adhesive.Smell is not a small matter Book and magazine factories, graphic and text stores, food packaging workshops,Hot melt adhesive granulesOdor directly affects worker comfort and customer perception. But the typical misconception is that ‘strong odor equals firm adhesion’, and there is no necessary relationship between the two. 5 common misconceptions Misconception 1: The stronger the […]
Our common hot melt adhesive can generally stick to wood, paper (white cardboard, kraft paper, silver cardboard, PE coated paper, BOPP coated paper), cloth (non-woven fabric, cotton), glass, acrylic, plastic (PVC, PP, PE, etc.), metal (aluminum alloy, iron plate, stainless steel, etc.). Easy to stick: wood, white cardboard, kraft paper, non-woven fabric, cotton cloth, glass, […]
What are the applications, uses, and advantages of hot melt adhesive? Hot melt adhesive is widely used in various industries. Here are some of the main industries that benefit from hot melt additives. Electronics:Electronic innovation affects almost every field of our lives.. The formula currently under development helps promote electrical interconnection, provide critical protection, and […]
The use of hot melt adhesive requires appropriate preparation and preheating to ensure smooth operation. 1. Glue Add an appropriate amount according to the amount of glue used and the size of the hot melt glue pool. During normal use, maintain a liquid level range of 35% -80% in the sol tank. If the amount […]
