Erarbeitung von Kennwerten für das kunststoffgerechte Konstruieren

Moslé, H. G.; Dick, Hilmar

doi:10.1007/978-3-322-88448-0

Cited by 1 publication

(2 citation statements)

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“…5. 10 (Table 1 ), (in the case of pressure: the maximal value reached by the pressure in the mold). A special tool allowed a rigorous control of the melt temperature in the die and of the temperature of the tool as well as of the pressure in the mold at two different points.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…The results obtained on these specimens with a knit-line in their middle have been compared with those obtained on test bars, which have been gated from one end only, and in which, of course, knit-lines do not appear. A disadvantage of tests on standard specimens, which are normally used to establish the specific tensile properties of a polymer is that often the results are not transferable to a real constructional p~ made of the investigated polymer (10).…”

Section: Introductionmentioning

confidence: 99%

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The influence of knit‐lines on the tensile properties of injection molded parts

Criens

Moslé

1983

Polymer Engineering & Sci

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When injection molding complex parts, often knit‐lines are formed during the mold filling stage. These knit‐lines are well‐known as particularly critical regions in the mold when mechanically loaded. Using three test materials, polystyrene (PS), polycarbonate (PC) and polyoxymethylene (POM), the relationship between a design and a processing parameter and the effects of the knit‐lines on the tensile properties of injection molded plates with holes is quantified by the variation of a socalled knit‐line‐factor ak1. Finally, for PS a comparison of the influence of knit‐line‐formation by a splitted melt stream and by multi‐gating on the mechanical level is given.

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Section: Experimental Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%