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تحضير المواد الخام

• Polyethylene resin selection, mixture PE materials.
• Additives mixing, incorporate additives like anti-static agents, slip agents, toughening agents, or masterbatches for color or functional enhancements.

عملية البثق

PE films are primarily manufactured using two methods:

• Blown film extrusion: polyethylene resin is melted and extruded through a multi-screw extruder. The molten material passes through an annular die, where air inflates it into a bubble. The bubble is then stretched, cooled, and wound into rolls. It is ideal for producing high-strength, multi-functional films.
• Cast film extrusion: the molten material is extruded through a flat die to form a thin film, and then cooled on a chill roll, and stretched to achieve the desired breathability. It is ideal for breathable, non-breathable, and laminated films.

• Breathability enhancement, inorganic fillers (e.g., calcium carbonate) are mixed with PE for compounding, followed by mechanical or thermal stretching to create micropores, imparting breathability.
• Lamination is applied to improve textile-like texture and strength properties, often used to bond with spunbond and air through nonwovens.
• Custom patterns can be printed on the film using flexographic or gravure printing techniques.

التشريح واللف

The film is scanned by cameras for quality control before being rolled onto shafts in large jumbo rolls, and subsequently slit into smaller rolls of the required width and packaged according to customer requirements.