المشاكل والحلول

إجابات عملية على التحديات الشائعة في مواد البلاستيك

Dimensional fluctuation of general-purpose polyethylene extruded products

Extrusion & Post dimensional fluctuation screw speed haul-off speed temperature stability uniform feeding

Cyclic pressure fatigue failure of general-purpose polyethylene PPR pipes

Extrusion & Post fatigue failure PPR stress concentration inner wall quality welding bead

Thermal aging performance of general-purpose polyethylene PPR pipes not up to standard

Extrusion & Post thermal aging antioxidant PPR oxidation induction time extrusion temperature

Melt flow rate mismatch of raw materials for general-purpose polyethylene extrusion

Extrusion & Post melt flow rate grade selection extrusion grade process adjustment batch inspection

Uneven wall thickness of general-purpose polyethylene extruded pipes

Extrusion & Post uneven wall thickness die concentricity uniform temperature stable haul-off sizing sleeve

Insufficient long-term hydrostatic strength of general-purpose polyethylene PPR pipes

Extrusion & Post hydrostatic strength PPR molecular weight pipe wall thickness crystallinity

Sharkskin appears on the surface of general-purpose polyethylene extruded products

Extrusion & Post sharkskin melt fracture die temperature extrusion speed die polishing

Bamboo pattern/melt fracture appears on the surface of general-purpose polyethylene extruded products

Extrusion & Post melt fracture bamboo pattern critical shear rate die temperature extrusion speed

Dimensions of general-purpose polyethylene injection molded products too small, below the lower limit

Extrusion & Post undersized dimension excessive shrinkage insufficient holding pressure post-shrinkage gate freezing

Dimensions of general-purpose polyethylene injection molded products too large, exceeding the upper limit

Extrusion & Post oversized dimension holding pressure shrinkage rate mold temperature dimensional control

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