A laminated packaging material is composed of a thermoplastic material outermost layer, a paper base material layer, a conductive barrier layer and a heat sealing innermost layer.

解决问题的方法：一种叠层包转材料由热塑性材料最外层、纸基材料层、导电阻挡层和热封最内层构成。

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In this paper, heating power and stable heat conduction quality of the resistance-heat sealing machine were studied according to principles of heat transfer.

用热工基本原理，详细地叙述了电阻加热式封口器的加热功率及稳定导热量计算。

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Based on the practical operating condition of the stern tube sealing system, a new model of heat transfer is presented in this paper.

本文根据尾轴密封装置的工作实际，提出一种新的传热模型。

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