Food contact sheet specific migration test sampling soaking device

Abstract

The invention relates to a food contact sheet specific migration test sampling soaking device which belongs to a device for soaking a food contact sheet in a food contact sheet specific migration test. An upper cover and a lower cover, which have the same size and shape, are the same in thickness of side walls; a liquid inlet hole and a gas outlet hole are respectively formed at different positions on the side wall of the upper cover; the liquid inlet hole is connected with a cone liquid outlet pipe; the gas outlet hole is connected with a cone gas outlet pipe; the liquid inlet hole and the gas outlet hole are respectively communicated with an inner cavity of the upper cover by pilot holes; the upper cover is provided with a liquid diversion sunken part and a gas outlet sunken part; the liquid diversion sunken part and the gas outlet sunken part are respectively communicated with an inner cavity of the lower cover by pilot holes; corresponding position connection holes are formed at multiple positions on the upper cover and the lower cover. The food contact sheet specific migration test sampling soaking device has the advantage that liquid for detecting toxic and hazardous substances migrated by a tested food contact slice completely reflects the quantity of the toxic and hazardous substances migrated when the slice is used as a packaging material, so that the food contact sheet specific migration test sampling soaking device is accurate to detect the quantity of the toxic and hazardous substances migrated by the slice, and has no interference of slice section migration substances.

Description

technical field [0001] The invention belongs to equipment for detecting harmful substances of food packaging sheet materials, in particular to a device for soaking food contact sheets in a specific migration test of food contact sheets. Background technique [0002] Now, in the specific migration test of food contact sheets, the food packaging sheet is first immersed in a food simulant (a mixture of water, acetic acid solution, ethanol solution, and isooctane) at a temperature of 20°C, 40°C, or 60°C. ), the immersion time is 4 hours to 24 hours, or the immersion time can be customized according to the detection needs, so that the toxic and harmful substances in the packaged sheet can naturally migrate to the soaking warm water. When soaking, always cut the packaging sheet of a certain area (usually 100 square centimeters to 200 square centimeters) into small pieces and soak them in warm water at 20 degrees Celsius. The disadvantage of this cutting into small pieces of s...

AI Technical Summary

Problems solved by technology

The disadvantage of this cutting into small pieces of soaking is that both sides of the packaging sheet and the cut surface of the cut must be soaked, and there should be no substances migrated from the cut surface of the cut during actual measurement, and often the printing on the outer surface of the packaging sheet is toxic. The content of harmful substances is high, and the toxic and harmful substances printed on the outer surface are not the content of the test

Therefore, this specific migration sampling method of cutting the packaging sheet into small pieces and soaking the food contact surface sheet will make the content of toxic and harmful substances in the final detection too high, and the detection result will be inaccurate and even seriously distorted.

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