新発見！ヒートシール技法の最新の動向: 加熱速さがヒートシール強さの発現パラメータ

摘要

本現象[Hishinuma効果]は次のような特徴を示す。（1）高速，高感度の溶着面温度計測と加熱操作によって，未知のヒートシール現象が発見できた。（2）カムアップタイムによるヒートシール強さ　の発現遷移は多くの汎用材料に発見されている。（個々の材料の個別現象ではなく，ヒートシール操作に村する共通現象かも知れない）（3）カムアップの時間帯（0.1～0.3s等）の低速化によってヒートシール強さ特性の発現が高温側へ遷移する。%It has been more than 50 years since application of heat sealing technology started. For long time, its application has progressed with the development of plastic.Control elements of heat sealing technology had been known as "temperature", as the main element, "time" and "pressure". However, when the heat sealing strength was measured under the resolution of 0.1 degree C and 10ms, where "temperature" was defined as "melting surface temperature" and "time" was defined as "the response of melting surface temperature", it was found that the expression parameter was heating speed of the melting surface. (This phenomenon is called "Hishinuma Effect".)This discovery will tell us how we identify the factors for variation of heat sealing characteristics. Also, it will improve the basic functions of packaging such as "easy openability" and "seal-ability" and further contribute to better application of plastic packaging materials.