PP masterbatch suppliers more and more, but the quality of management, each vendor has its own way, today, Xiao Bian to share with you, Veris masterbatch normal quality management What are the key issues to note:

PP masterbatch quality indicators include more content, such as the appearance of uniform color, no dust, masterbatch size: Φ (2.7 ~ 3.3) mm × (3 ~ 3.4) mm, Moisture: ≤0.3% ( wt), color: 4 (gray card), heat resistance: ≥240 ℃ (used in BCF, meltblown nonwoven fabric model relatively high heat resistance), these indicators are our Dalian Rui Cai Technology Co., Ltd. color concerns.

(1) filtration performance fiber grade masterbatch by filtration to characterize the performance of students masterbatch quality, its value is known as the small DF value, the spinning process filtering component replacement cycle is relatively long, generally require PP masterbatch DF values less than 2.0 × 105Pa · cm 2 / g.

(2) Melt flow index (MI value) MI of the polypropylene is mainly used to slice characterize the molecular size of the decision process and the finished fiber forming property thereof after slicing. Masterbatch containing a pigment, a dispersant and a low-molecular carrier polyethylene wax, it is not used to the level of the table MI seek their own molecular weight, and will vary depending on variety and pigment changes, it is not the masterbatch masterbatch MI control indicators for reference only spinning. Select spinning masterbatch MI slices slightly larger than the qualities, good for both size and similar mixing. General requirements for the MI values ​​(15 ~ 30) g / 30min.

(3) melting point PP Masterbatch dispersant with low molecular weight polyethylene wax, the melting point between 110 ~ 120 ℃; and pigments generally a high melting point than polypropylene spinning temperature, so thermal analysis spectrum masterbatch there are two on the endothermic peak of the low melting point but masterbatch masterbatch can not characterize the quality of the pros and cons, and some corporate standards specified melting point 130 ~ 160 ℃.

(4) heat-resistant masterbatch heat index refers to a polypropylene masterbatch and polypropylene sections were at different temperatures of 5 to 10 minutes spinning cycle by a certain percentage, the degree of observed changes in their color. The color change is available assessing change in color gray color sample card or sample card comparison evaluation, when the total value of the color ⊿E≤3, this temperature is the temperature of this heat-resistant masterbatch, usually requiring heat 270-300 ℃, the color changes to level 4.

(5) weatherability colored polypropylene weatherability, referring to the sun fastness test method of textiles measured by assessing the results of standard assessment blue light fastness, light fastness requirements in five, in fact on more than 6 ~ 8.

Quality management in place, the finished product will masterbatch outstanding performance, made of polypropylene products, stable performance, colorful, Veris has always attached great importance to quality management, to provide better products for customers is to give.