Abstract:

Objective A heating method of developing characters filed away on plastic products was researched and the corresponding principles were discussed. Methods Convex characters were filed away on common plastic materials， then developed by heating with the alcohol lamp. Results The filed characters were clearly developed in the experiment. Conclusion Factors such as damaging degree of characters， properties of plastic materials and manufacture techniques， affect the results of development.

Key words: plastic product, character, developing, principle

摘要：

目的 研究塑料制品上损毁文字的加热显现方法，探讨显现原理；方法 将盗窃案涉及的常见塑料客体上的凸面文字进行锉除，对文字消除部位进行加热显现；结果 清晰显现了几种常见塑料客体上的消除字迹；结论 在利用加热法显现塑料客体上消除的文字时，塑料表面损毁程度、客体材质、生产工艺等因素对显现结果产生重要影响。

关键词: 塑料制品, 文字, 显现, 原理