Counter sunk area

The temperature of molded part corners should particularly he taken into account, as the well-known corner warpage can be avoided. In the arrangement of the temperature control channels, heat dissipation is inevitably better in the counter sunk area than in the core area. This can be explained by the smaller contact area in the core. This leads to a displacement of the plastic polymer core in the direction of the core (Figure 2.86), wherein the contraction of the shifted residual melt causes a distortion of the corner geometry. 

For the explanation of the different heat transport in a molded part corner, this area is divided into uniform molding part squares (dashed lines) in Figure 2.86. In the counter sunk area, two cooling channels (d) are arranged for one square (a) in the core area, only one cooling channel (c) is arranged for three squares (b). 

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See also in sourсe #XX -- [ ]

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