Foam cooler has a general insulation performance, low plastic cooler price, light weight, also known as ESP cooler. It is a most common use cooler. The disadvantage is that it can not be used for a long time, high scrap rate, not environmental, short insulated time.
Injection molding cooler, using injection molding method, make lining and outer wall, which filled ESP foam, the main feature is the insulation effect is good, more solid, can be long-term use. General production materials for the external material usually is PE or PP. Insulation layer is EPS. Relatively low cost, many categories. But because it is extrusion molding, thin material wall, PP material is brittle. As the wall can not be installed very tight lock, sealing is not good.
Blow molding cooler, compared to Europe and the United States with more than the rotomoulding cooler, Japan like blow molding cooler more, blow molding cooler compared to injection cooler, General box material is HDPE, insulation layer is PU foam. This kind is lighter, wall is also thin, can not bear long-term impact and long-term drop, sealing performance has to be improved. The cost is higher.
Rotomolding food cooler, rotomolding is a relatively new type of plastic molding technology, mold rotation in the rotomolding machine, with fire to melt the plastic particles, after cooling molding. Because it need continuous rotation of the plastic molding machine, so called rotomolding.
Rotation molding process is more special, because the need to melt the plastic particles evenly filled in the mold, the production time is longer, a mold work 24 hours a day can only produce more than a dozen products, so the rotomolding production cycle is longer, mass production needs Increase the number of molds to achieve. But rotomoulding mold is much cheaper than a injection blow mold, suitable for small batch of custom processing.
Rotational plastic food cooler wall thickness can reach 5-10MM thickness.Their characteristic is normally the injection molding and blow molding, the corner will be the thinnest place, but come to the rotomolding, the corner will be the the thickest place.
From a small water tank, large to a simple house walls can be produced by rotomolding technology. Rotary molding material use LLDPE, good toughness, low temperature resistance. Rotational plastic cooler to form an empty cavity, suitable for filling insulated materials, the current general use PU foam filling.
Rotomolding food cooler can be directly touch food, durable structure, you can rest assured that stacked multi-layer and good load. Due to wall thickness and more materials, rotomolding food cooler is relatively heavy, mostly for trucks, individuals, long-term frequent use of food cold storage transport, perfect choice for camping, fishing, hunting and other outdoor activities.
For example: our cooler with marine stainless steel buckle, tough rubber fish tail handle, bottom anti-skid pad, opener and other convenient accessories, non-toxic and tasteless, anti-UV VU8 LEVEL, easy to change color, smooth surface, easy to clean, Insulation effect is good, anti-fall against the fight, can be used for life. Has been widely used in hunting, fishing, camping and other outdoor activities, our cooler in the summer to ice at least 6 days.