Aluminium Lidding Foil & Round Aluminium Foil Container With Lid – Complete Product Details

1. Product Specification Parameters

2. Production Process Flow

Step 1: Raw Material Sourcing & Inspection

• Source 8011/1235 aluminium coils from ISO 9001-certified suppliers (provide material test reports for purity and heavy metal content).
  - Test aluminium coils for food-grade compliance via GC-MS (per FDA 21 CFR 177.1390) – reject batches with any contaminants.
  - For lidding foil: Source food-safe acrylic resin (coating material) with EU 10/2011 certification.

Step 2: Aluminium Foil Rolling (Container & Lid)

• Container Foil: Pass aluminium coils through cold-rolling machines to reduce thickness to 0.03mm–0.05mm (precision control: ±0.002mm).
  - Lid Foil: Roll coils to 0.02mm–0.03mm thickness, then coat one side with acrylic resin (even coating thickness: 5μm–8μm) via roller coating.
  - Dry coated lid foil in a temperature-controlled oven (80°C–100°C) to cure the resin (no residual solvents, tested via headspace GC).

Step 3: Round Container Stamping & Forming

• Cut rolled container foil into circular blanks (size matching container diameter) via precision die-cutting (tolerance ±0.5mm).
  - Use hydraulic stamping machines (100–150 tons pressure) to form blanks into round containers with reinforced bases (ensures stackability and load-bearing).
  - Edge Treatment: Smooth container rims with ultrasonic deburring (prevents sharp edges from cutting hands or tearing lids).

Step 4: Lid Cutting & Tab Preparation (If Applicable)

• Cut coated lid foil into round shapes (matching container diameters) via automated rotary cutters (high speed: 500 lids/min for bulk orders).
  - For lids with peel tabs: Punch pre-cut tabs (10mm × 5mm) at the edge of each lid (ensures easy opening without tools).

Step 5: Cleaning & Sanitization (Critical for Food Safety)

• Send containers and lids through a 3-step cleaning process:
  1. Alkaline wash (food-safe detergent) to remove manufacturing oils;
  2. Rinse with deionized water (no mineral residues);
  3. Dry with hot air (60°C) and sanitize with UV-C light (254nm wavelength, eliminates 99.9% of bacteria like E. coli).

Step 6: Quality Testing & Inspection

• Container Tests:
  • Dimensional check (diameter, height) via laser measurement (100% sampling for small orders; 5% random sampling for bulk);
  • Leak test (fill with 100ml water, invert 24 hours – no leakage = pass);
  • Heat resistance test (bake at 220°C for 30 minutes – no warping = pass).
    - Lid Tests:
  • Seal strength test (measure force to peel lid from container: ≥3N/25mm = airtight);
  • Coating adhesion test (tape test per ASTM D3359 – no coating peeling = pass).

Step 7: Packaging & Traceability

• Package containers and lids separately in food-grade PE bags (anti-static, prevents dust contamination) – 50–100 units per bag.
  - Place bags into corrugated cardboard boxes (5-layer, moisture-resistant) with batch labels (production date, lot number, compliance certifications).
  - Log each batch into a traceability system (links to raw material suppliers and test reports) for easy recall if needed.

3. Product Advantages

3.1 Food Safety & Compliance

• 100% Food-Grade Materials: Aluminium foil and lid coating meet global food contact standards (FDA, EU 10/2011) – no toxins leach into food, even at high temperatures (220°C).
  - Hygienic Production: UV-C sanitization and closed-loop manufacturing prevent cross-contamination – ideal for ready-to-eat meals and baby food.

3.2 Versatile Temperature Adaptability

• Oven/Microwave/Freezer Safe: Use the same container for cooking (oven), reheating (microwave), and storage (freezer) – eliminates the need for multiple packaging types (saves costs for restaurants and meal kit brands).
  - Heat Retention: Aluminium foil retains heat 30% longer than plastic containers – keeps food warm during delivery (critical for food service).

3.3 Leak-Proof & Shelf-Life Extension

• Airtight Seal: Lidding foil’s acrylic coating forms a tight seal with the container rim – prevents liquid leakage (e.g., soups, curries) during transportation and blocks oxygen (reduces food spoilage by 3–5 days).
  - Light Barrier: Aluminium foil blocks UV/visible light – preserves the color and nutrients of light-sensitive foods (e.g., salads, fresh fruits, herbal soups).

3.4 Sustainability & Cost Efficiency

• 100% Recyclable: Both container and lid are made of aluminium – fully recyclable (meets EU SUP Directive 2019/904 and US EPA guidelines) – helps brands meet sustainability goals.
  - Space-Saving Stackability: Uniform round design allows dense stacking (saves 50% warehouse space vs. square containers) – reduces storage and shipping costs.
  - Single-Use Convenience: No cleaning needed (disposable after use) – cuts labor costs for busy food businesses (e.g., fast-food chains, catering services).

3.5 User-Friendly Design

• Easy-Peel Lid: Optional pre-cut tabs make opening simple (no scissors or knives needed) – improves customer experience for retail and takeaway.
  - Rim Protection: Smooth, deburred edges prevent hand cuts – safe for staff and end-users (e.g., parents serving baby food).

4. Application Scenarios

4.1 Food Service & Catering

• Use Cases: Takeaway meals (curries, pasta), catering for events (buffets, boxed lunches), hospital meals (portion-controlled, hygienic).
  - Benefits: Leak-proof seal withstands delivery vibrations; heat retention keeps food warm; disposable design reduces post-event cleanup.

4.2 Ready-to-Eat (RTE) & Prepared good Manufacturing

• Use Cases: Frozen prepared food (stews, stir-fries), refrigerated RTE meals (salads, grain bowls), shelf-stable sauces (tomato sauce, hummus).
  - Benefits: Airtight/light barrier extends shelf life; oven/microwave-safe for easy reheating; customizable sizes (150ml–1800ml) fit single-family portions.

4.3 Retail Food & Deli

• Use Cases: Fresh deli items (rotisserie chicken portions, coleslaw), baked goods (quiches, tarts), dairy products (yogurt, dips).
  - Benefits: Clear lid option (available for retail visibility) showcases products; easy-peel design encourages repeat purchases; recyclable material appeals to eco-conscious shoppers.

4.4 Household & Meal Prep

• Use Cases: Meal prep (portioning weekly meals), food storage (leftovers, homemade sauces), freezing (soups, stocks).
  - Benefits: Microwave-safe for quick reheating; freezer-safe prevents freezer burn; stackable design saves fridge/freezer space.