Problem & Solution

Practical answers to common plastic material challenges

Browse Articles →

Extruded pipe inner wall surface rough

Rough pipe inner wall requires improving the mandrel and temperature

Material Drying pipe inner wallmandrelextrusion temperature

Product cracks during subsequent use or storage

Internal stress cracking requires eliminating residual stress and optimizing design

Material Drying stress crackingresidual stressannealingdesign

Bubbles or voids appear inside the product

Bubbles/voids need to be addressed from drying, holding pressure, and venting

Material Drying bubblesvoidsholding pressuredryingventing

Poor interfacial bonding or delamination in multi-material molding

Co-injection needs to be addressed from compatibility and process matching

Extrusion & Post co-injectioncompatibilityinterfaceshrinkage rate difference

Heat deflection temperature or long-term use temperature below target requirements

Heat resistance needs to be addressed from modifiers and formulation

Material Analysis heat resistanceheat deflection temperaturemodifiercellulose acetate butyrate

Clamping force directly affects product quality and mold safety

Clamping force needs to be calculated based on projected area and injection pressure

Injection Molding clamping forceflashprojected area

Product has sink marks, unstable dimensions, or flash

Holding pressure needs to be set according to shrinkage rate and gate freezing time

Molds & Tooling holding pressureshrinkage compensationshrinkage rategate freezing

Tiger-skin-like stripes appear on the product surface

Tiger-skin stripes require stable injection parameters and mold temperature

Material Drying tiger-skin stripesinjection instabilityspeed control

Warpage deformation needs quantitative measurement and cause analysis

Warpage needs quantitative measurement and marking of moisture conditions

Material Drying warpage measurementquantificationmoisture contentPA change

Modified cellulose acetate butyrate weather resistance not up to standard

Weather resistance needs to be addressed from UV absorbers and antioxidants

Material Analysis weather resistanceultravioletantioxidantyellowing

Prev 1 ... 481 482 483 484 485 486 487 ... 1164 Next