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Yaygın plastik malzeme zorluklarına pratik yanıtlar

Makalelere Göz At →
11636 soru
Q
Random copolymer polypropylene pipe special material (Nordic standard） pipe longitudinal reversion rate exceeding standard
A
Excessive reversion rate is caused by large internal stress or excessive orientation, and needs to be solved from temperature control, cooling rate and haul-off speed.
Extrusion & Post longitudinal reversion rateinternal stresscooling ratehaul-off speedmolecular orientation
2 görüntüleme
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Q
Random copolymer polypropylene pipe special material (Nordic standard） extruded products inner wall roughness
A
Inner wall roughness is caused by low mandrel temperature or poor surface condition, and needs to be solved from temperature control and mold maintenance.
Processing Machinery inner wall roughnessmandrel temperaturemandrel polishingmelt temperatureplasticization quality
3 görüntüleme
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Q
Random copolymer polypropylene pipe special material (Nordic standard） extruded products degradation discoloration
Q
Random copolymer polypropylene pipe special material (Nordic standard） PPR pipe cyclic pressure fatigue failure
Q
Random copolymer polypropylene pipe special material (Nordic standard） PPR pipe thermal aging performance substandard
Q
Random copolymer polypropylene pipe special material (Nordic standard） extruded pipe uneven wall thickness
A
Uneven wall thickness is caused by uneven die gap or uneven temperature, and needs to be solved from mold precision and temperature uniformity.
Extrusion & Post uneven wall thicknessdie concentricitytemperature uniformityhaul-off stabilitysizing sleeve
2 görüntüleme
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Q
Random copolymer polypropylene pipe special material (Nordic standard） extruded products surface bubbles/pores
Q
Random copolymer polypropylene pipe special material (Nordic standard） extruder screw design mismatch
A
Screw design needs to match material characteristics and product requirements; if necessary, customize a dedicated screw.
Processing Machinery screw designcompression ratioL/D ratiomixing elementsscrew matching
3 görüntüleme
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Q
Random copolymer polypropylene pipe special material (Nordic standard） PPR pipe insufficient long-term hydrostatic strength
Q
Random copolymer polypropylene pipe special material (Nordic standard） extrusion raw material melt flow rate mismatch
A
MFR mismatch needs to be solved by selecting suitable grades and adjusting temperature parameters.
Extrusion & Post melt flow rategrade selectionextrusion gradeprocess adjustmentbatch testing
2 görüntüleme
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Kategoriler

Tüm Konular 11636 Material Drying 1439 Injection Molding 1506 Molding Process 740 Molds & Tooling 1506 Processing Machinery 2025 Extrusion & Post 2239 Blow Molding 315 Thermoforming 141 Material Analysis 1343 Production & Quality 382
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