What factors cause plastic tray box fade over time?
Plastic tray box products in use process will have faded, this is caused by multiple factors comprehensive. Plastic tray box fade and the cause of dye light resistance, resistance to oxygen oxidizing, temperature difference, acid-proof alkaline, and the properties of resin raw materials used are directly related.
Below we specific to analysis;
A box, plastic tray in use process should avoid sun exposure, plastic products. Due to strong sunlight plastic pallet boxes, plastic tray box at the request of the production process of coloring a collapsible bulk containers indicator; Divided into level 4-8, in the case of dark enough use four, five, but if the plastic pallet boxes under the condition of the strong sunshine outdoor use, requires the light level is 8, add uv absorber in injection molding materials such as stabilizing agent, so that it can avoid plastic tray box under strong light use easy to fade.
Second, the stability of the dyes used in plastic pallet box production, to determine the degree of the products fade. Dye ingredients such as metal oxides and salts, this kind of material with good thermal stability, high heat resistance. Production of the main raw material for plastic pallet box: HDPP and HDPE, injection temperature above 280 ℃, so must consider when choose stain resistance to high temperature performance of dye.
Three, selection of antioxidants, because some oxidant in plastic pallet bins combination with the dye, and under the condition of high temperature produces chemical reaction, cause product easy to fade, plastic tray box products, oxidant to use high temperature resistant performance is stable.
Four, acid-proof alkaline, some plastic tray box products primarily with the acid and alkaline of the colorant used, resistant to oxidation reduction are closely related. Such as chromium molybdenum red resistance to dilute acid, but sensitive to alkali, cadmium yellow don't acid, these two pigments and phenolic resin for some colorants have the effect of strong reduction, seriously affect the heat resistance, weather resistance of the colorant and fade. For fading problem of the plastic pallet boxes, manufacturer shall be according to the production conditions of different plastic tray box and use of environmental requirements, in terms of targeting production on the ratio of raw material do right choice, this produces plastic tray box products not only durable, but also beautiful, is not easy to fade.
Plastic tray box color difference at home and abroad
Plastic tray box is a "good helper" in logistics, warehousing industry. Because of its high use value, can be recycled, flexible rotation, and many other advantages, are very popular with many industries. Then, the domestic plastic tray plastic tray box color box and abroad and what's the difference?
Abroad the use of the use of plastic tray box with the domestic situation is not the same, in color, which color to use domestic plastic tray box are generally based on industry demand characteristics and preferences to production and processing industry, and the color of no unified standard. Foreign each color plastic pallet boxes are has its meaning. For example, such as collapsible pallet bin yellow, red, blue three kinds of color box, blue box is used to hold, the red box is used to hold defective, yellow color of the box is used to hold waste. Abroad have unified requirements, through the color of the plastic pallet boxes can immediately understand the specific use of it. But in our country is not the same.
The use of plastic tray box in the domestic industry is also more and more specifications. At present, the domestic many industries is also the color of the plastic pallet boxes have the same requirements, such as: most of the food industry USES white plastic tray box.