PO hot melt adhesive film is a major category in the classification of hot melt adhesive film products. PO is the abbreviation of Polyolefins, and Polyolefins translates to polyolefins. So PO hot melt adhesive film is also called polyolefin hot melt adhesive film.

​

So what is polyolefin? Polyolefin is a general term for a class of high molecular polymers, usually refers to ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1-octene and 4-methyl-1-pentene - A class of thermoplastic resins obtained by the polymerization or copolymerization of olefins and certain cyclic olefins. The most commonly used polyolefins on hot melt adhesive films are polyethylene (Polyethylene, PE) and polypropylene (Polypropylene, PP), that is, PE hot melt adhesive films and PP hot melt adhesive films, which are collectively referred to as PO hot melt adhesive films. Melt film.

PO hot melt adhesive film from www.cn-hma.com is often produced by casting method, or by coating method, depending on the characteristics of the specific formula material. PO hot-melt adhesive film has good washing resistance, and depending on the material, it also has good low-temperature or high-temperature resistance, and can withstand a high temperature of about 100°C.

The application of PO hot-melt adhesive film is not very common in traditional hot-melt adhesive film applications. For example, the garment manufacturing and shoe-making industries do not use PO hot-melt adhesive film in large quantities. This is not because PO hot melt adhesive film has a problem with the bond strength of these materials, and even PO hot melt adhesive film has better bond strength. The reason why it is not used in these fields is that PO hot melt adhesive film has a poor feel and usually requires a relatively high temperature to use, which increases the energy cost of the enterprise.

The advantage of tpu hot melt adhesive film is that it has a very good bonding effect on materials such as metal, plastic, and wood. It not only has strong adhesive force, but also has strong resistance to high temperature boiling and weather resistance. This makes PO hot melt adhesive films have the opportunity to be used in the field of building materials that often have high requirements for weather resistance. The relatively mature and currently the largest application of PO hot melt adhesive film is the manufacture of aluminum-plastic panels, which are used to bond aluminum skins and plastic panels. In addition, the manufacture of aluminum honeycomb panels also has some demand for such hot-melt adhesive films.

In short, PO hot melt adhesive film is a kind of hot melt adhesive film product with excellent performance, which has good application effect for some specific materials and specific fields. I believe that in the future, more and more material developers will understand and apply it.

Why PO and EVA hot melt adhesive films are suitable for PP honeycomb panels

According to the principle of similarity and compatibility, PO hot melt adhesive film and PP are both polyolefin materials, so they have better compatibility and can produce better adhesion. But it should be noted that not all PO hot-melt adhesive films have a good bonding effect on PP plastics. If the bonding strength reaches a certain index, it is necessary to modify the hot-melt adhesive film itself. deal with. The composition of EVA hot melt adhesive film is vinyl acetate copolymer, which has good viscosity to polypropylene, while the composition of PP material is polypropylene, and its main composition is similar to polypropylene, so it will have better compatibility.

Features of hot melt adhesive film for PP honeycomb panel

PO hot-melt adhesive film for PP honeycomb panels has a melting point of 110 degrees Celsius, no elasticity, and has good washing resistance. EVA hot-melt adhesive film for PP honeycomb panels has elasticity and poor washing resistance. It is used for PP honeycomb panels. One reason is that the melting point is low, and the use temperature is 110 degrees Celsius. Both are environmentally friendly adhesives, which also meet the environmental performance requirements of PP honeycomb panels.

In general, if PP honeycomb panels are bonded with PO and EVA hot-melt adhesive films, they can meet all requirements. Not only the bonding performance is good, but the bonding effect is long-lasting, which increases the service life of PP honeycomb panels and meets the requirements of environmental protection. , can be said to be a good solution to the bonding problem of PP honeycomb panels.