How to use the shape of hot melt adhesive 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 rubber pellets 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 to insert the end of the glue strip of the hot melt gun into the barrel of the gun. After being heated, pull the trigger, push the glue strip forward, and extrude the melt glue 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
Most of them are used for fabrics and pads, and the "coating" of the glue must be realized by a dusting device. When bonding, the glued lining material and Other substrates are superimposed, and after hot pressing, tight bonding can be achieved. 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. Film hot melt adhesive
The hot-melt adhesive is extruded into a film sheet into a roll product, cut to 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, polyvinyl butyral film, EVA film. No need for Transparent Adhesive Film for car, plane bonding
Hot Melt Adhesive Film Manufacture

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