Regarding to the concerning of the Certificate letter for the Cold resistance temperature.
In a nature of Polyethylene (PE) material resin properties its can withstand low temperatures of -25 Degree Celsius.
However, the standardized upon food contact condition e.g., raw food, food with high fatty, high sugar, sodium, and cooking ingredient content can breaking those PE properties.
NOT only that film thickness, contact time and contact temperature also are factories cause damage those PE properties also. So we cannot certify exactly for the cold resistance temperature.
Based on the Japan Food Sanitation Law, the Polyethylene (PE) ; Evaporation residue (Elution) testing requires with leaching condition at 25 Degree Celsius for 1hr. with Fats and oils and fatty foods simulation, which standard acceptable evaporation residue NOT MORE THAN 3mg/ml. You may can see our sample lab test result is ‘PASS’ with all condition test as per Birdie provided to you.
Please note, generally with our other major customers do not mention temperature on the labelling declare just storage at refrigerated, Freezer, frozen condition,
Regarding to the concerning of the Certificate letter for the Cold resistance temperature.In a nature of Polyethylene (PE) material resin properties its can withstand low temperatures of -25 Degree Celsius. However, the standardized upon food contact condition e.g., raw food, food with high fatty, high sugar, sodium, and cooking ingredient content can breaking those PE properties.NOT only that film thickness, contact time and contact temperature also are factories cause damage those PE properties also. So we cannot certify exactly for the cold resistance temperature.Based on the Japan Food Sanitation Law, the Polyethylene (PE) ; Evaporation residue (Elution) testing requires with leaching condition at 25 Degree Celsius for 1hr. with Fats and oils and fatty foods simulation, which standard acceptable evaporation residue NOT MORE THAN 3mg/ml. You may can see our sample lab test result is ‘PASS’ with all condition test as per Birdie provided to you.Please note, generally with our other major customers do not mention temperature on the labelling declare just storage at refrigerated, Freezer, frozen condition,
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