The technical requirements for food preservation bags primarily cover raw materials, appearance quality, and functional performance. Production must utilize plastic materials that meet standards for food contact, ensuring safety and non-toxicity so that no contamination occurs during use. Additionally, the bag's surface should be smooth and even, free from defects-such as visible impurities, damage, or air bubbles-that could impair usability.
In terms of performance, these bags require good transparency, flexibility, and sealing capabilities. The material must possess adequate tensile strength and tear resistance to prevent breakage during packaging, while the seal must be secure enough to effectively block air, moisture, and odors, thereby enhancing food preservation.
Food preservation bags must also comply with relevant food safety standards, undergoing testing for hygiene parameters, temperature resistance, and the migration of harmful substances. Manufacturers are required to implement quality control measures to ensure every batch meets specified requirements, thereby guaranteeing both food safety and reliability in daily use.