Extrusion & Post
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Linear low-density polyethylene linear low-density polyethylene process handover problems when switching between different processing methods
Problem Phenomenon
When switching from one processing method to another (such as from injection to extrusion), product quality fluctuates greatly and a long debugging time is required.
Poor process handover affects production efficiency and product quality.
Cause Analysis
(1) Different processing methods have different material requirements (MFR, molecular weight, etc.)
(2) Parameter settings do not match after equipment conversion
(3) Operators are not familiar with the other processing method
(4) Raw material batch differences are superimposed on changeover adjustments
(5) Insufficient preparation before changeover
Solution
(1) Establish changeover operating procedures, specifying the process parameter range for each processing method
(2) Prepare suitable material grades before changeover
(3) Operators are trained in multiple processing methods
(4) During changeover, first conduct small-batch trial production, and proceed to mass production after passing inspection
(5) Establish material processability archives
Key Takeaway
Changeover handover requires advance planning and full preparation; the key is to clarify the differentiated requirements of different processing methods on materials.
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