Analysis of black-streak defects on food-container screw caps

被引：0

作者：

HE Xiaolei ^{[1
]}

HONG Tao ^{[1
]}

ZHANG Yi ^{[1
]}

机构：

[1] Research Institute,Baoshan Iron & Steel Co.,Ltd.

来源：

Baosteel Technical Research | 2021年 / 15卷 / 01期

关键词：

food-container screw cap; black-streak; two-dimensional gas chromatography time-of-flight mass spectrometry;

D O I：

暂无

中图分类号：

TS203 [机械与设备];

学科分类号：

083201 ;

摘要：

The cause of black-streak defects on food-container screw caps is analyzed by two-dimensional gas chromatography time-of-flight mass spectrometry,morphological analysis,and energy-dispersive X-ray spectroscopy.An immersion experiment was conducted with the cap immersed in different concentrations of acetic acid to simulate the growth of black streaks.The experimental results show that the acetic acid concentration in food is closely related to the appearance of the black-streak defects.Acetic acid is speculated to permeate into the gaps of the cap followed by the formation of ferric acetate(light brown solid).The ferric acetate then breaks through the paint surface and its color coincides with that of the paint,which leads to the formation of the black-streak defects.

引用

页码：29 / 33

页数：5