Sauce packaging fears leakage, boiled food packaging fears high-temperature deformation—traditional films often suffer from packaging damage due to insufficient corrosion resistance, liquid leakage due to low heat-sealing strength, or film surface shrinkage during boiling sterilization due to poor temperature resistance. Our high-functional IPE film integrates three core performances of "high-strength heat-sealing + acid-alkali corrosion resistance + wide temperature range tolerance" through multi-layer co-extrusion technology and special raw material formulation, providing a stable and reliable solution for sauce and boiled food packaging.
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1. High-Strength Heat-Sealing: Reliable Protection Against Liquid Leakage
Using special heat-sealing resin and interlayer reinforcement technology, the film's heat-sealing strength is stably maintained at 20–25N/15mm, far exceeding the industry's conventional standard of 15–18N/15mm. Even when packaging thick sauces with particles (such as broad bean paste, beef sauce) or when internal pressure increases after boiling, the seal can still fit tightly without cracking or liquid leakage. Tests show that when the film bag containing sauce falls from a height of 1.2 meters or bears 5kg of lateral pressure, the seal integrity rate reaches 100%, completely solving the leakage risk in sauce transportation and storage.
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2. Acid-Alkali Corrosion Resistance: Suitable for Multiple Sauce Types
The film surface is added with chemical corrosion-resistant modifiers, forming a uniform protective layer through precision co-extrusion technology, which can withstand acid-alkali environments with pH 2–12 for a long time—whether it is acidic vinegar, tomato sauce, alkaline broad bean paste, or high-salt soy sauce and chili sauce, it can effectively block the penetration of sauce components, preventing the film from swelling, discoloration or strength attenuation. Even if the sauce is stored for a long time (more than 6 months), the packaging remains intact without affecting product quality and appearance.
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3. Wide Temperature Range Resistance: Suitable for Boiling Sterilization Process
The raw material uses high-temperature resistant polyethylene substrate, which is subjected to special cross-linking treatment, expanding the film's temperature resistance range to -20℃ ~ 121℃: it can be used for frozen sauce storage at low temperatures, and can withstand 121℃ boiling sterilization at high temperatures (such as 10–30 minutes of boiling heating for prepared dishes). During the process, the film surface does not shrink or deform, and the heat-sealing strength attenuation rate is less than 5%. No additional protective layer is needed, directly adapting to the boiling packaging line of food factories, simplifying the production process and reducing packaging costs.
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4. Safety Compliance and Efficient Processing: Balancing Practicality and Productivity
All raw materials comply with FDA and EU 10/2011 food contact standards, with no harmful substances precipitated during acid-alkali resistance and high-temperature resistance, and can directly contact food and sauces. The film surface has high flatness (thickness uniformity ±2μm), compatible with high-speed automatic packaging machines of 80–180 bags per minute, ensuring smooth conveying without jamming and reducing downtime for debugging. It also supports surface printing (adhesion up to 4B level), and can customize brand logos and product information, helping to improve the visual texture of packaging and enhance consumer recognition.
💬 Frequently Asked Questions
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What heat-sealing strength does the IPE film provide, and how does it compare to industry standards?
The IPE film maintains a heat-sealing strength of 20–25N/15mm, which significantly exceeds the conventional industry standard of 15–18N/15mm. This ensures the seal remains intact even under the pressure of thick, particle-filled sauces or after boiling sterilization.
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What range of pH levels can the IPE film withstand for sauce packaging?
The film is engineered to resist acid-alkali environments with a pH range of 2–12, making it suitable for highly acidic products like vinegar and tomato sauce, as well as alkaline products like broad bean paste and high-salt condiments.
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Is the IPE film suitable for both frozen storage and high-temperature boiling sterilization?
Yes. The film's temperature resistance spans from -20℃ to 121℃. It can handle frozen sauce storage at low temperatures and withstand 121℃ boiling sterilization for 10–30 minutes without shrinkage, deformation, or significant loss of heat-sealing strength.
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Does the IPE film comply with international food safety standards?
Absolutely. All raw materials used in the IPE film comply with FDA (USA) and EU 10/2011 food contact material standards. No harmful substances are released under acid-alkali or high-temperature conditions, ensuring the film is safe for direct contact with food and sauces.
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Can the IPE film be used with high-speed automatic packaging machines?
Yes. With a surface flatness of ±2μm thickness uniformity, the IPE film is fully compatible with high-speed automatic packaging machines operating at 80–180 bags per minute, ensuring smooth conveying, minimal downtime, and consistent production efficiency.
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Can custom branding or product information be printed on the IPE film?
Yes. The IPE film supports surface printing with an ink adhesion level of up to 4B, allowing food manufacturers to print brand logos, product names, and other information directly onto the packaging. This helps enhance visual appeal and improve consumer recognition on retail shelves.
