In the field of raw materials for chemical production, PP (meltblown) is a common plastic product, widely used in masks, filter materials, non-woven fabrics and other fields. The following is the manufacturing method of PP (meltblown):
I. Preparation of raw materials
The manufacture of PP (meltblown) firstly needs to prepare the raw materials, mainly polypropylene resin. Polypropylene resin has high molecular weight, low melting point, good chemical resistance and other characteristics, is the ideal material for manufacturing PP (meltblown).
II, melt extrusion
will be added to the polypropylene resin in the extruder, through the heating and screw extrusion effect, so that the resin melt plasticization. The molten resin passes through the extruder head to form a melt of a certain shape, laying the foundation for the next step of stretching.
III. Stretching
After the molten resin comes out of the extruder head, it enters the stretching device. Here, the melt is rapidly stretched into fibers, while the fibers are rapidly cooled and cured. During stretching, the melt undergoes refinement, forming the microstructure of PP (meltblown).
Four, collection
After stretching and cooling and curing the PP (meltblown) fibers are collected to form a nonwoven fabric of a certain thickness and density. During the collection process, methods such as electrostatic adsorption can be used to improve the collection efficiency of the fibers.
V. Post-processing
The collected PP (meltblown) nonwoven fabrics can be post-processed, such as hot pressing, cutting, packaging, etc., to meet different needs of use.
The above is the basic manufacturing method of PP (Meltblown), the specific production process and equipment will vary according to different product types and quality requirements. At the same time, the production process needs to be strictly controlled and adjusted in order to ensure the quality and performance of the products.
In short, the manufacture of PP (meltblown) requires certain technical and equipment support. Through scientific production process and strict quality control, high quality PP (meltblown) products can be produced, contributing to the development of the field of raw materials for chemical production.
