heveahigh density polyethylenehigh impact polystyrenehigh nuclearity clusterhigh performancehigh performance compositehigh performance polymerhigh pressurehigh resolutionhigh stiffnesshigh strengthhigh stress crystallizationhigh styrene rubberhigh wash fastnesshighly oriented gridshindered aminehistogramhobbinghold upholding pressureholding timeholehomogeneoushomogenityhomopolymerizationhomotropichoneycombhoodhookean behaviourhookean modulushoop strainhoop stresshopperhoppinghorizontal periodhorizontal stabilizerhorizontal stiffnesshosehot det testhot dip galvanizinghot embossinghot emulsionhot gas weldinghot melt adhesivehot platehot plate weldinghot pothot presshot rubberhot runner