论文部分内容阅读
兰德克公司的Intelimer膜的透气性可由温度调节而变化.用于产品包装的这种薄膜,符合产品的透气率,而且如事先设定温度,达到此温度,其透气性即发生变化.大部分产品的透气程度随温度变化而变化.新鲜产品的包装,因考虑到嫌气条件和高温等引起的二氧化碳伤害而设定在5℃,而现在使用的包装膜,基本上透气性不随温度而改变.兰德克公司开发出在温度细微变化时对气体透过情况能够显示出很大变化的薄膜.这种调节机制是通过利用拥有长链的脂肪族乙醇基的高分子侧链的结晶高分子技术完成的.侧链有妨碍气体分子(氧气、二氧化碳等)透过的结晶结构,如达到某特定温度则侧链溶解,变成可使气体分子透过的不定形结构.这种温度开关也可以薄膜的粘着性和粘性产生变化.
The breathability of Randall’s Intelimer membranes can be varied by temperature, and the films used in product packaging conform to the breathability of the product, and the air permeability changes as the temperature is set beforehand. The degree of ventilation of some products varies with temperature. The packaging of fresh products is set at 5 ° C due to the carbon dioxide damage caused by anaerobic conditions and high temperatures, and the packaging film now used is basically not permeable to temperature Changes.Randker developed a film that shows a large change in gas permeation when the temperature changes slightly.This mechanism of adjustment is achieved by utilizing the high crystallinity of the polymer sidechains with long chain aliphatic alcohol groups Molecular technology to complete the side chain has hindered the gas molecules (oxygen, carbon dioxide, etc.) through the crystal structure, such as to reach a certain temperature, then the side chain dissolved, into the gas molecules can penetrate the amorphous structure of this temperature switch It is also possible to change the tackiness and tackiness of the film.