The purpose of this study is to integrate a polymeric film onto a mold to impede thermal heat transfer during resin infusion. A thin plastic plate was fabricated by using microinjection molding. A polyimide (PI) film was laminated onto a mold in an effort to produce a thin light guide plate (LGP). The film could decelerate the solidification of molten polymer in the cavity of mold and enhance the wall slip of resin on the mold. The insulation effect was modeled numerically. The surface roughness and pattern transfer characteristics of the LGP were evaluated. It was found that the fluidity of the resin increased due to the decreased skin layer during mold filling. The results showed that the strategy proposed in this study could help decrease the thickness of LGP effectively when manufacturing the part via injection molding.

这项研究的目的是将聚合物薄膜整合到模具上，以阻止树脂注入过程中的热传递。通过使用微注射成型来制造薄塑料板。将聚酰亚胺（PI）膜层压到模具上，以生产薄的导光板（LGP）。该膜可以使熔融的聚合物在模具型腔中的凝固减速，并增加树脂在模具上的壁滑。对隔热效果进行了数值建模。评估了LGP的表面粗糙度和图案转印特性。已经发现，由于模具填充期间表皮层的减少，树脂的流动性增加。结果表明，本研究中提出的策略可以帮助通过注射成型制造零件时有效地降低LGP的厚度。