With the increasing frequency of using rotational molding in people's daily lives, it is deeply loved by everyone. Because rotational molding has many advantages, Shanghai Yuezhan editor will take you to understand the differences between rotational molding insulation boxes and others

In the eyes of many people, the food incubator is still a relatively strange thing, and the incubator under influence is a foam box.

    Food insulation has only recently gained attention from companies in various food related industries. Generally, the breeding point for bacteria in food is within the range of 10-65 degrees Celsius. Therefore, we control the insulation to be below 10 degrees Celsius for refrigeration or above 66 degrees Celsius for thermal insulation.

    Foam incubator has general thermal insulation performance, low price and light weight, also known as ESP incubator. It is currently the most common and widely used insulated box. The disadvantage is that it cannot be reused for a long time, with a high scrap rate and slightly poor insulation performance.

    The injection molding method is used to make the inner lining and outer wall of the injection molding food incubator, which is filled with ESP foam. The main feature is that the insulation effect is good, it is firm and can be used for a long time. The general production material is PP for the outer material and PE or PP for the inner material. The insulation layer is made of EPS. Relatively low cost, with a wide range of categories. Simply because it is extruded, the material wall is relatively thin, and the PP material is brittle. Due to the thin wall, it is not possible to install a very tight lock buckle, resulting in average sealing performance.

    Blow molded insulation boxes, compared to the roll molded insulation boxes commonly used in Europe and America, Japan and other countries tend to use blow molded insulation boxes. Compared to injection molded insulation boxes, blow molded insulation boxes are integrally formed and can foam PU insulation layers inside, resulting in higher compactness and durability. The general outer box material is HDPE, and the insulation layer is PU foam. His advantages are durability, light weight, and good insulation effect. The disadvantage is that the wall is thin and cannot withstand long-term impact and falls. Similarly, due to the inability to install sturdy metal locks, the sealing performance still needs to be improved. The cost is relatively high.

    EPP incubator is very popular recently, because it is lighter than injection molding and blow molding, and more durable than foam food incubator, which can be reused. Now many enterprises like food distribution, cold chain distribution and home furnishing use more of them. They can also match with oxford cloth insulation bags, which can be folded, shoulder and back, and gradually replace foam boxes as the main insulation tools for home furnishing and electric vehicle distribution. However, the disadvantages are also obvious. Although the weight is light and stronger than foam box, there are still some defects in large-scale and long-term use.

    Rotational molding of food insulated boxes is a relatively new plastic molding technology. The mold rotates on a rotational molding machine, and the plastic particles are melted in an oven or fire, cooled, and then molded. Due to the need for continuous rotation of the rotational molding machine, it is called rotational molding. Rolling molding is a unique process that requires melting plastic particles to evenly fill the mold, resulting in a longer production time. A mold can only produce a dozen or so products in 24 hours, so the rolling molding production cycle is longer. Batch production requires increasing the number of molds to achieve. However, compared to injection molding and blow molding, rotational molding molds are relatively cheaper and suitable for small batch customized processing. Compared to blow molding, rotational molding is more commonly used in Europe, America, and other regions. The wall thickness of the rotational molding food insulation box can reach 5-10MM, and the characteristic is that the wall is thicker in the corners where it is formed, which can form a solid surface. Roll molded products can be produced from as small as a water tank to as large as the walls of a simple house. The material used for rotational molding is LLDPE, which has good toughness and low temperature resistance. Roll molded food insulation boxes naturally form an empty inner cavity, suitable for filling with insulation materials. Currently, PU foam is commonly used for filling. Roll molded food insulated boxes can directly contact food, with a sturdy and durable structure that can be safely stacked in multiple layers and has good load-bearing capacity. However, due to the large amount of materials used for wall thickness and the relatively heavy weight of rotational molding food insulation boxes, they are generally not suitable for electric bicycles and single person delivery. Instead, they are used for refrigerated and insulated transportation of food by trucks, multiple people, and frequent long-term use.

    Of course, in addition to the insulation boxes mentioned above, there are also various food insulation products made of aluminum alloy, fiberglass, and Oxford cloth insulation bags.

    At present, with the long-term development of the economy, people are paying more and more attention to food hygiene and cold chain distribution. The flexible distribution method and low cost of insulated boxes are increasingly favored by various related industries. With the continuous development trend of fresh food e-commerce, fishing, and pharmaceutical logistics, the use of insulated boxes will become increasingly widespread and the market prospects will be better and better.

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