Sorun ve Çözüm

Yaygın plastik malzeme zorluklarına pratik yanıtlar

Makalelere Göz At →

Insufficient breaking strength of homopolymer polypropylene PP fibers

Insufficient PP fiber strength is caused by improper raw material selection or process parameters; it needs to be optimized from material grade and drawing conditions.

Extrusion & Post fiber strengthPP fiberspinning temperaturedraw ratioside-blowing air

10 görüntüleme

Tam Yanıtı Oku →

Excessive shrinkage rate of homopolymer polypropylene extruded products

Excessive shrinkage rate is caused by high crystallinity or high temperature; it needs to be solved by controlling temperature and cooling rate.

Extrusion & Post shrinkage ratecrystallinitymelt temperaturecooling ratehaul-off speed

10 görüntüleme

Tam Yanıtı Oku →

Poor printability of homopolymer polypropylene film

Poor printability is caused by low surface energy; ink adhesion needs to be improved by increasing surface tension through corona treatment.

Extrusion & Post printabilitysurface energycorona treatmentink adhesionsurface tension

10 görüntüleme

Tam Yanıtı Oku →

Longitudinal reversion of homopolymer polypropylene pipes exceeding standard

Excessive reversion is caused by large internal stress or excessive orientation; it needs to be solved from temperature control, cooling rate, and haul-off speed.

Extrusion & Post longitudinal reversioninternal stresscooling ratehaul-off speedmolecular orientation

10 görüntüleme

Tam Yanıtı Oku →

Melt flow rate mismatch of raw material for homopolymer polypropylene extrusion

MFR mismatch needs to be solved by selecting appropriate grades and adjusting temperature parameters.

Extrusion & Post melt flow rategrade selectionextrusion gradeprocess adjustmentbatch testing

9 görüntüleme

Tam Yanıtı Oku →

Sharkskin on the surface of homopolymer polypropylene extruded products

Sharkskin is the result of stick-slip flow of the melt at the die exit; it is improved by increasing die temperature and reducing extrusion speed.

Extrusion & Post sharkskinmelt fracturedie temperatureextrusion speeddie polishing

9 görüntüleme

Tam Yanıtı Oku →

Homopolymer polypropylene injection products with undersized dimensions below the lower limit

Undersized dimensions are caused by excessive shrinkage; the shrinkage rate needs to be controlled by strengthening holding pressure, lowering temperature, and extending cooling time.

Extrusion & Post undersized dimensionexcessive shrinkageinsufficient holding pressurepost-shrinkagegate freezing

9 görüntüleme

Tam Yanıtı Oku →

Flash/burrs on homopolymer polypropylene injection products

Flash is a manifestation of mismatch between mold clamping force and injection pressure; it needs to be controlled from clamping force, injection pressure, and mold accuracy.

Extrusion & Post flashclamping forceinjection pressureparting linemold gap

10 görüntüleme

Tam Yanıtı Oku →

Excessive Shrinkage Rate of Block Copolymer Polypropylene Extruded Products

Excessive shrinkage rate is caused by high crystallinity or high temperature, and needs to be solved by controlling temperature and cooling rate.

Extrusion & Post shrinkage ratecrystallinitymelt temperaturecooling ratehaul-off speed

9 görüntüleme

Tam Yanıtı Oku →

Excessive Longitudinal Reversion Rate of Block Copolymer Polypropylene Pipes

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

9 görüntüleme

Tam Yanıtı Oku →

Önceki 1 ... 20 21 22 23 24 25 26 ... 224 Sonraki

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

Sorun ve Çözüm

Kategoriler

Teklif Al