Main uses of polypropylene with high melt index
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What types of products are mainly made from homopolymer and impact-resistant copolymer polypropylenes with a high melt index (above 30) during post-processing?
It is mainly used for coating and as a base material for color masterbatches.
Could the moderator explain it in more detail?
Hehe, how detailed do you mean? Generally, coating and masterbatch bases require higher fluidity.
As far as I know, polypropylene is drawn into materials such as polypropylene fibers and non-woven fabrics; high melt index grades are also used for these applications. I’m not sure whether those with a melt index of over 30 are utilized as well…………
Let me answer. Homopolymerized materials with high melt index are mainly used in non-woven fabrics. They are also used in high-speed injection molding to produce thin-walled products such as lunch boxes. As for copolymerized materials with high melt index, they are primarily used for making small, thin-walled items like ice cream containers
Thank you for the answers from Wzr141 and wuivan. Could you talk about the uses of impact-resistant copolymers?
Impact-resistant copolymerized polypropylene usually refers to multiphase copolymers; it is typically homopolymerized polypropylene combined with EPDM copolymer or block copolymers along with EPDM rubber. Applications include injection molding (mainly for washing machine drums, household appliance components, automotive interior parts, etc.), and extrusion (some applications involve pipes that are not made of PPR but rather of this copolymer material – though such cases are rare). There are too many applications to list here; refer to the grade specifications manual for details
I agree with the opinion from the 6th floor: Homopolymerized products with high melt index are mainly used in non-woven fabrics. They are also used in high-speed injection molding to produce thin-walled products such as lunch boxes. On the other hand, copolymerized materials with high melt index are primarily used for manufacturing small, thin-walled products'
Generally used for injection molding of thin-walled containers and coating films