1.Polypropylene chips are commonly used in spunbond non-woven fabrics and melt blown non-woven fabrics

The raw material of polypropylene chips used in spunbond and meltblown production line is spinning grade polypropylene (PP) chip, and its specific properties are as follows:

(1).Melt index(MFI):25 ~ 40g / 10min for spunbond method   400~1500g/10min for meltblown method

(2)Relative molecular weight distribution width(Mw/Mn):<4~5

(3)Melting point:164~170℃(The melting point of pure isotactic polypropylene is 176℃)

(4)Density:0.91g/cm3

(5)Isotacticity:Not less than 96%

(6)Ash content:Not more than 0.025% (weight)

(7)Moisture content:Not higher than 0.05%(weight)

(8)The appearance is smooth, the particle size is uniform, and there is no continuous particle phenomenon.

2.Selection of raw materials

The raw materials used in the nonwoven production line are related to the market positioning and purpose of the products. When producing products in the low-end market, due to the low requirements for raw materials, inferior raw materials can be selected in order to reduce production costs. vice versa.

Most spunbond nonwoven fabric production lines use granular polypropylene (PP) chips, but a considerable number of small nonwoven production lines use powdered PP raw materials, and some nonwoven production lines use recycled polypropylene raw materials. In addition to granular raw materials, the meltblown nonwoven fabric production line may also use spherical raw materials.

The price of slice is directly related to the size of MFI value. Generally, the larger the MFI value, the higher the price. Therefore, we should comprehensively consider the production process, equipment characteristics, product use, product sales price, production cost and other factors to select the raw materials.

Zhejiang Yanpeng Nonwoven Machinery Co.,Ltd is a professional manufacturer of nonwoven fabric production line which engaged in development and production for many years. Our company has focused on making nonwoven production line since 2008, We can provide customized single S, SS ,SSS spunbond nonwoven production line,SSMS, SMMS SMS spunmelt (spunbond & meltblown) production lines,and other PP,PET/PLA, BiCo spunbond production line to our customers.  Yanpeng people will continue to be dedicated to the development of non-woven equipment and related products.We sincerely want to return our customers with cost-effective products and best service.  Our polypropylene(PP) spunbond nonwoven equipment is constantly updated after years of production practice, which makes the design of non-woven fabric production line more perfect and the operation easier.Our equipment is constantly improving. Our equipment is constantly improving, under the premise of complete specifications, superior performance, excellent quality and beautiful color, it can also add recycled material and filling to reduce the cost of products.