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2020-07-27
TPE material color matching problem
TPE material color matching problem Recently, many customers are also consulting me about how to match the color of TPE materials, in fact, TPE materials are generally selected to color mixing color powder, because now the market, or no special for SEBS that is TPE particles specifically produced a masterbatch, the first TPE particles itself has its limitations, he is almost a modified material, but also belongs to the plastic class. Most TPE, TPR is transparent, translucent, this white, is very easy to color, should choose the appropriate color powder or color masterbatch coloring. Generally based on SBC. TPE/TPR is better than other types in coloring TPE/TPR materials. SBC-based TPE/TPR materials only need a small amount of color masterbatch to achieve the desired color effect, and the matched color is more pure and vivid than other types of TPE/TPR. It should be noted that the viscosity of masterbatch should be lower than that of TPE/TPR, because the melt index of TPE/TPR is higher than that of masterbatch, which is good for dispersion and makes the color distribution more even. 1) For TPE/TPR with SBS as the base, it is better to use polystyrene or EVA type color carrier. 2) For TPE/TPR with SEBS as the base, it is better to use polypropylene color carrier. 3) Softer TPE/TPR with SEBS as the matrix, it is better to use low-density polyethylene or ethylene vinyl acetate copolymer instead of polypropylene carrier, in order to avoid the hardness of the composite material being affected by polypropylene carrier. 4) SBS, SEBS are not allowed to use PVC as the base color masterbatch. 5) For some applications of overmolded TPE/TPR, polyethylene carrier should be avoided because polyethylene carrier may adversely affect the adhesion between TPE/TPR and the substrate. In fact, many times it is not only necessary to choose the color masterbatch. We also need to adjust the melt index of TPE, and familiarity with injection molding equipment is also essential. http://1806260057.pool2-site.make.yun300.cn/product/5/#c_product_list-15330035904672074-2
2020-07-22
What material to do the toy is safe
What material to do the toy is safe Most toys are based on synthetic resins, which can be divided into two categories: thermoplastics and thermosets. The former mainly has a chain-like linear structure that softens when heated and can be repeatedly molded, while the latter has a net-like body structure when formed, which cannot be softened by heat and cannot be repeatedly molded. In the toy industry, plastic and plastic is a kind of thing. Select plastic toys also pay attention to. * Wipe with cloth: qualified plastic toys, plastic on the coloring agent is usually used organic dyes and inorganic dyes, the use of high temperature coloring, even if you rub again hard will not lose color. * Finished product thickness: plastic toys can not be too thin, in general, there are corners or curves where the plastic wall should be thicker than the rest, so as to increase the bearing capacity of the toy when it falls to the ground without being destroyed. * Check the gap: screws and other fastening head can not protrude from the surface of the toy, flat head, round head wood screws should have countersunk holes. Plastic toys should be assembled to fit, there should be no gaps. * closed transmission mechanism: toys with transmission mechanism (gear drive, chain drive), such as all kinds of toy cars, its transmission mechanism should be covered, so that the baby's hands can not reach in. These safety materials can be found on the logo of the toy What material will be shown on the toy logo, in the purchase of toys, don't finish checking the toy logo, to find a trusted material, but also to choose a toy suitable for the age of the baby, which is also very important Oh. Shangri-Li Plastics is looking forward to your call! Contact:139 2505 9389 Mr. Yan For more information, please see: http://www.dgshangli.cn http://1806260057.pool2-site.make.yun300.cn/product/13/
2020-07-16
Is TPR material toxic?
Is TPR material toxic? TPR material is a thermoplastic rubber material. It is a kind of thermoplastic soft rubber material with rubber elasticity 5261 and without vulcanization, which can be directly processed and molded (such as injection molding, extrusion 1653, blow molding, etc.). TPR material is based on thermoplastic styrene-butadiene rubber as the basic raw material, adding resin (such as PP, PS), fillers, plasticizing oil agent and other functional additives blended modified materials. The use temperature range is -45~90℃. Usually TPR material is based on SBS base material, its chemical properties are as follows: weather resistance, aging resistance in general, temperature resistance 70~75℃. If you need good aging resistance and temperature resistance, you can choose the modified material of SEBS base material. Extended information. TPR and PVC are both soft materials with rubber elasticity, which are difficult to identify through appearance and feel. And the difference by burning is more intuitive and easy. 1, look at the burning smell. tpr burning aromatic smell, the taste is not unpleasant. pvc burning chlorine odor, the taste is unpleasant. 2, look at the flame color. Burning flame root color green is PVC material, the color of blue is TPR material. 3, flame retardant level (refers to the material without flame retardants) PVC flame retardant level UL94-V2, with self-extinguishing, ignition combustion, ignition source evacuation, the flame will generally be extinguished; TPR flame retardant level UL94-HB, burning in the fire, away from the fire continues to burn does not go out. TPR material is widely used in daily-use products, hardware tools, luggage wheels, sports equipment, toy products, auto parts, medical products, wire and cable, electronic appliances, communication instruments and shoe products, etc.. The shoes and toys industry is mainly the application area of TPR with SBS base material, and the modified material with SEBS base material is mainly used in the application of aging resistance, weather resistance, high material tensile strength, and ultra-low material hardness (less than 5 degrees Shore hardness). We look forward to hearing from you! Contact:139 2505 9389 Mr. Yan For more information, please see: http://www.dgshangli.cn http://1806260057.pool2-site.make.yun300.cn/product/10/
2020-07-14
Is it better to use TPU for shoe soles than tire soles and why?
Is it better to use TPU for shoe soles than tire soles and why? TPU is only part of the support in the midsole, not the entire sole. The general sole is a composite of several materials. The outsole (that is, the part of the ground) is generally made of rubber, the tire sole that the questioner said should be the V-sole, very wear-resistant, but only part of the sole. TPU, plastic and carbon fiber are only the support part of the sole, which gives the shoe good torsional resistance and power transmission. So a shoe sole is a composite, different materials play different roles, should be considered. Shangri-Li Plastics is looking forward to your call! Contact:139 2505 9389 Mr. Yan For more information, please see: http://www.dgshangli.cn http://1806260057.pool2-site.make.yun300.cn/product/16/