Inspection | Infant and Toddler Feeding Bottle Inspection Standards and Methods

Infant feeding bottles are containers that come into direct contact with a baby's mouth and food. Their safety is directly related to the healthy growth of babies. Therefore, the quality of infant feeding bottles cannot be underestimated. Inspection should be carried out in strict accordance with relevant national standards. How are infant feeding bottles inspected? What are the requirements for infant feeding bottle inspection?

Technical Specifications for Inspection of Infant and Toddler Feeding Bottles

1. Component requirements

1. Appearance requirements

   • During a visual inspection under natural light, the bottle should be clean and free of foreign matter, and should not have any gaps, holes or deformations that affect its use (unless permitted by design).

2. Edge and tip requirements

   • All parts must be free of sharp edges or points that could cause injury.

3. Printing pattern ink adhesion

   • The printed pattern (including text and capacity scale) of reusable parts must comply with GB/T 9286 Level 1 standard : The shedding area at the cross-cutting point is ≤5%.

4. Capacity scale and deviation requirements

   • Scale mark :

     • Clearly marked with "mL" or "ml" The capacity scale is the unit, and the minimum scale is ≤60mL;

     • Multiple scale interval ≤ 60mL;

     • The nominal capacity consists of the largest visible scale and the unit (e.g. 300mL).

   • Capacity deviation test (select one method):

     • Method A : Use a graduated cylinder to measure the volume of water at a temperature of (20±5)°C and calculate the deviation:

       • When the volume is ≥100 mL: ΔV′ = |(V₁ - V₀)/V₀| × 100%

       • When the volume is less than 100 mL: ΔV″ = |V₁ - V₀|

     • Method B : Use a balance to weigh the water mass and convert it into volume. The formula is the same as A.

     • Test points : minimum, maximum and middle scales, take the average value of three samples.

5. Small parts requirements

   • Removable parts or parts that fall off after the drop test must not be completely accommodated in the small parts tester (according to the standard diagram).

6. Sealing gasket requirements

   • Diameter ≥35mm.

7. Needle punch and tensile properties

   • Puncture test : A sharp needle (200±10N force) is used to pierce the waist of the pacifier. If the puncture occurs, a tensile test is required;

   • Tensile test : Apply (90±5)N force for 10 seconds, no breakage or separation.

2. System performance requirements

1. Component fit

   • After assembly according to the instructions, all parts should fit together perfectly.

2. Boiling water resistance

   • The disassembled parts are immersed in boiling water (10–12 minutes) and there is no deformation or damage after removal (except for soda-lime glass).

3. Thermal shock resistance

   • After the parts (except glass) are immersed in boiling water for 10-12 minutes, they are transferred to 0℃ ice water for 10-12 minutes within 5 seconds without any cracking or rupture.

4. Sealing performance

   • After the boiling water and thermal shock tests, inject 2/3 of the nominal capacity with water and turn it upside down for 3 minutes without leakage (except for the nipple milk outlet).

5. Light transmission performance

   • The capacity scale and liquid level are clearly visible under natural light (except for metal bottles).

3. Special requirements for pacifiers and drinking parts

1. Test template passability

   • The component must not protrude from the bottom of the test template A/B (according to the standard diagram), otherwise it must meet the following requirements:

   • Length : The distance from the top to the locking ring (or bottle mouth) is ≤100mm;

   • Safe holding force : Apply (60±5)N force for 10 seconds, and there is no breakage or separation of the parts;

   • Flexibility test : After applying a force of (10±1)N, the distance between the bending point and the locking ring (or bottle mouth) is <40mm.

2. Overall drop performance

   • After filling with water, drop it from a height of (120±5) cm in random directions 3 times (excluding glass/ceramic bottles):

     • The bottle body, nipple and locking ring are not separated, cracked or broken;

     • Glass/ceramic bottles must be marked with a "Glass is fragile" warning.

4. Additional material requirements

1. Plastic bottle body compressive deformation

   • The diameter change rate after applying a pressure of 20N is ≤10% (except for compressible design products, but warning labels are required).

2. Glass bottle special

   • Thermal shock resistance : meets the standard temperature shock requirements (see Table 2);

   • Water resistance : meets chemical stability standards (see Table 3);

   • Internal stress : apparent stress at the bottom of the bottle ≤ level 4;

   • Mechanical impact strength : ≥0.10J (number of fractures among 8 samples ≤1).

5. Factory inspection requirements

1. Batch rules

   • For the same raw materials/specifications/process, the batch size is ≤50,000 pieces. If the production volume in 7 days is insufficient, the production volume in 7 days shall prevail.

2. Inspection items and sampling

   • Appearance : Press GB/T 2828.1 Second sampling plan (AQL=6.5, general inspection level II);

   • Printing adhesion, capacity deviation, component matching : random sampling, double re-inspection if unqualified.

3. Qualification determination

   • If all items are qualified, the batch is qualified.

VI. Labeling and warning requirements

1. Basic Principles

   • The instructions for use must be in standard Chinese, with the safety warning font ≥ size 4 bold and the content ≥ size 5 bold.

2. Must-buy information

   • Product name, model, implementation standard, production date/batch number, shelf life, manufacturer information (imported products shall be marked with the place of origin and agent).

3. Safety Alert Examples

   
   

   - Glass baby bottles: "Glass is fragile, and the temperature difference between hot and cold should be ≤45°C"; - Contains natural rubber: "May cause allergies"; - Contains straws: "Not suitable for babies under 6 months old"; - Microwaveable products: "Stir the food when heating and check the temperature."

4. Instructions for use

   • Cleaning method (boil for 5 minutes before first use), prohibited operations, parts inspection and replacement requirements.

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