How to use the shape to distinguish different types of hot melt adhesive?

January 10, 2023

Hot melt adhesive film

(1)Block and Granular Hot Melt Adhesives

This kind of hot melt granule has a large output. There are blocks in the form of squares, round blocks, and granular ones in the shape of flat, rhombus, and cylinder. The colors are light yellow, white, red, black or translucent and colorless. There should be a melting pot when using, and after melting, scrape coating, roll coating, spray coating or extrusion coating
(2)Stick hot melt adhesive
Usually it is a round rod-shaped rubber strip with a length of 150-300mm. The glue application tool is a hot melt gun. The end is inserted into the barrel of the gun. After being heated and melted, the trigger is pulled, the rubber strip is pushed forward, and the melt glue is extruded at the same time. This glue has yellow, white, red, or colorless and transparent mainly used for bonding metal, electronic products, plastic parts and toys
(3)Powder hot melt adhesive
Mostly used for fabrics and pads, the glue must be "coating" by a dusting device. When bonding, the glued liner and Other substrates are superimposed, and after hot pressing, they can be tightly bonded. Such as adhesive lining for clothing, carpet backing, leather shoe lining. The pulverization of hot melt adhesive is more difficult, because of the friction and heating during mechanical pulverization, sticky lumps will appear, and chemical pulverization and cryogenic mechanical pulverization are required. Most of the colors are natural
(4)Hot Melt Adhesive Film

The hot melt adhesive is extruded into a film sheet and rolled into a roll product, cut into the required size, and sandwiched between the substrates and hot pressed to achieve high bonding strength. The Adhesive Film can also be mixed with heat-curing components, such as epoxy resin or cross-linking agent. Transparent adhesive films are used in automotive laminated safety glass manufacturing and solar cell encapsulation. They have polyurethane film, EVA film. No need for Transparent Adhesive Film for car, plane bondinga

Hot Melt Adhesive Film Manufacture

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