Coating/converting machinery
Hotmelt Coating Stations can be adapted for integration in (existing) machines or complete assembly lines. Hotmelt Coating Stations  may become an essential step in more and more industries, as it is already in the whitegoods and automotive industry.

Het bericht Hot melt coatings verscheen eerst op PUR hot melt adhesives.

PE based hotmelts are odorless, clear and very thermostable in the melting tank and the heated hoses (160C). The (food) packaging can withstand temperatures between -40 ° C and + 50 ° C.

No angelhair or very minimal spinning
A common problem is hotmelt threads (angel hair). It creates pollution, can reduce adhesion and is a sign of poor hotmelt (melt adhesive) or incorrect equipment settings. Angel hair problems are solved by using a Metallocene hotmelt, but also by increasing the temperature, the use of special hotmelt heads. In addition, there are many more different causes, such as obsolete nozzles, drafts in the machine, or an outdated hot melt (charring).

Het bericht PO hot melt adhesives (polyolefin) verscheen eerst op PUR hot melt adhesives.

Hot melt application equipment are industrial availalbe to melt the “plastic glue’, Which is being transported through  the hot melt system to the gun (head) and nozzle without a mechanical trigger mechanism but based on mostly, air pressure drive piston pumps. When the hot melt is applied on the first substrate, it is initially hot enough to burn and blister skin, so be carefull with hot melt adhesives! Hot melt is tacky when hot (the hot tack may differ with the several commercial available types), and solidifies in a few seconds. Some grades, for e.g. matress assembly, offer open times up to 1 or two minutes. Self adhesive hot melt adhesives do offer a permanent open time. Hot melt adhesives can also be applied by rollercoaters, dipping or spraying.

Hot melt adhesives may provide several advantages over other assembly techniques, such as screwing or welding. Unlike solvent-based adhesives, hot melt adhesives are environmently save, friendly for the environment and economic. Hot melt adhesives do not contain  Volatile organic compounds. Standard EVA and PO hot melts do not require curing, PU (PolyUrethane hot melts) do cure after (12h-36h) the first application.. Most Hot melt adhesives have a long shelf life. These glues usually can be disposed of without special precautions. Hotmelt adhesives may be sensible to temperature changes, typically temperatures above 60 degrees Celcius, or below 5 degrees Celcius may be critical. Temperature influences mostly can be reduces with using a reactive PU adhesive. PU hot melt adhesive have a further curing process after the initial, solid bond is established. (known asa  reactive urethane). Most EVA and PO HMAs are notresistant to chemical attacks and weathering, but will do perfect for packaging and in house used equipment, such as whitegoods.. Due it’s being 100%  solids, hot melt adhesives do not lose thickness,; solvent-based wand waterbeased adhesives may lose up to 50-70% of layer thickness after drying

Het bericht Hot melt adhesive (HMA) verscheen eerst op PUR hot melt adhesives.

• Fast application,
• difficult shaped profiles
• low and high temperature resistance
• Moisture restance
• Roller coating, slotcoating, no contact extrusion, or spray applications

Het bericht Profile Wrapping PU hot melt adhesive verscheen eerst op PUR hot melt adhesives.

The glue is tacky and sticky when hot, and cools down in a few seconds to enable a fast bond and further processing. Intercol’s Hot melt adhesives can also be applied by jetting, roller coating, wheel application,  dipping, swirl and spraying.

Hot melt adhesives offer several advantages over solvent-based glues and adhesives. Volatile organic compounds  (VOC) are eliminated, and the “drying”  process is very quick (fast setting speed). Hot melt adhesives have a almoste permanent shelf life and normally can be disposed of without special precautions. You might be carefull with substrates that are sensitive to higher temperatures, and loss of bond adhesive strength at higher temperatures, or even a complete melt of the adhesive. PUR or PU-reactive adhesives will qure after applying and therefore these are almost not temperature dependent.  Most PUR hot melts are resistant to chemical attacks and  have a high durability due to weathering. hot melt adhesives do not  lose thickness (like with vaporizing water or solidus) during solidifying; solvent-based and waterbased adhesives may lose up to 50-70% of layer thickness  when dried.

Het bericht Hot melt verscheen eerst op PUR hot melt adhesives.

Non surface swelling with Flat laminated  panels and substrates when using Intercol’s low emmision laminating PUR hot melt adhesives, as for all hot melt adhesives, the solid content is 100%, no H2O or solvents are used. PUR flat laminating Hotmelts can be applied in a thin layer and at the same time providing a strong resistance to water, chemicals and heat. Low VOC emissions and outstanding laminating performance factors of these PUR (PU) adhesives. Our complete PUR hot melt laminating (flat) portfolio for flat lamination and profille wrapping provides the best solution for most building- and construction materials.

Het bericht Flat Lamination PU hot melt verscheen eerst op PUR hot melt adhesives.