Real-World Data on 6 Packaging Testing Methods: Compression Resistance, Drop, Vibration, Stacking, Temperature and Humidity, and Gas Permeability—Three Costs to Calculate Before Sending Samples for Testing

In early 2025, an export cosmetics client asked us: “Do you provide packaging testing? Our bottles and boxes need to be sent to SGS for a full range of tests.”

There is a common misconception among outsiders—packaging testing is not performed by the printing plant; it is conducted by a third-party testing organization. The role of the printing plant is to prepare the customer's packaging samples before submission for testing, thereby avoiding rework caused by non-conformance.

Type 1 Testing: Compression Resistance (Box Load-Bearing Capacity)

Test objects: corrugated cartons, gift boxes, and transport outer boxes. The test method is GB/T 4857.4. The carton is placed on a compression tester, and pressure is applied at a constant rate until the carton deforms or ruptures, at which point the maximum compressive strength is recorded.

Real data reference:

Testing costs: Testing institutions charge 500-800 yuan per sample, with a turnaround time of 3-5 working days. The most common issue customers encounter is: “Five-layer corrugated board was specified with AB fluting, but the resulting box could not withstand the compressive load of 8kg of goods.” In such cases, the printing plant should first use a simple pressure-testing machine to conduct its own tests before submitting the sample for testing.

Our printing plant purchased a simple pressure tester for 5000 yuan (measurement range 0-100kg). Before each submission for testing, we test 3 samples ourselves. If the customer's budget is limited, they can submit just 1 sample to a third-party testing institution for an official report.

Type II Testing: Drop Test

Test object: finished packaging boxes. The test method is GB/T 4857.5, involving a free fall from a fixed height onto a concrete floor to determine whether the products inside the boxes are damaged.

Common drop height:

Inspection cost: Testing institutions charge 300-500 yuan per sample, with a turnaround time of 2-3 business days. This test has a very high first-pass rate, and printing plants will generally not encounter difficulties at this stage.

Our printing plant recommends that customers prepare 3 samples for drop testing and test edge, corner, and face drops separately—edge drops generally cause the most damage. Most cartons that fail drop testing have adhesive separation at the bonded seams.

Type Three Testing: Vibration

Test object: a packaging box for long-distance transportation. The test method is GB/T 4857.7. The box is fixed on a vibration table to simulate the vibration frequencies of trucks, trains, and aircraft (5-200Hz) for 30-60 minutes.

Real-world scenario: A customer producing glass bottles found that the bottle bodies were fine after vibration testing, but the caps had become loose. The cause was that vibration reduced the coefficient of friction between the caps and bottles. We recommend that printing plants conduct a physical vibration test before submitting samples for testing.

Testing costs: Inspection agencies charge 600-1000 yuan per sample, with a turnaround time of 5-7 business days. This test is very common for export packaging.

Our printing plant recommends that customers pay attention to 3 details when conducting vibration testing: vibration direction (vertical, lateral, and longitudinal motions should all be tested), vibration frequency range (the full frequency band from 5-200Hz), and vibration duration (60 minutes recommended).

Category 4 Testing: Stacking

Test object: cartons stored in a warehouse. The test method is GB/T 4857.3. A weight is placed on top of the carton (generally twice the weight of the carton) for 24-72 hours to determine whether the lower cartons deform.

Real data:

Inspection costs: Testing institutions charge 400-700 yuan per sample, with a turnaround time of 3-5 business days. This cost is easily underestimated—if the customer miscalculates the warehouse stacking height, the printing plant will also be implicated.

In April 2025, one of our beverage customers had a shipment returned: the warehouse stacked the cartons 6 layers high, but the carton design had only been considered for stacking 3 layers high. The cartons on the bottom became deformed, crushing the glass bottles inside. The printing plant was not liable because it had manufactured the cartons according to the customer’s specifications, but the customer incurred a loss of 20000.

Category 5 Testing: Temperature and Humidity

Test subjects: temperature-sensitive packaging (food, cosmetics, and pharmaceuticals). The test method involves placing samples in a constant-temperature and constant-humidity chamber to simulate extreme conditions of 40°C / 90% RH for 7-30 days, then checking whether the packaging has deformed, leaked, or developed mold.

Testing costs: Testing agencies charge 1500-3000 yuan per sample, with a turnaround time of 7-30 days. This is the most expensive and slowest option, but printing plants generally do not need to submit samples for testing—the customers will do it themselves.

What the printing factory can do is confirm in advance how sensitive the customer's products are to temperature and humidity. For example, lotions and creams in cosmetics are highly sensitive to high temperatures of 40°C—the plastic bottles and tubes used by the printing factory must not deform or leak at 40°C.

Category 6 Testing: Air Permeability

Test objects: food fresh-keeping packaging, coffee capsule packaging, milk powder cans, etc. The test method is GB/T 1038, using a permeability tester to measure the oxygen transmission rate.

Actual data:

Inspection costs: Testing agencies charge 800-1500 yuan per sample, with a turnaround time of 3-5 working days. This is the aspect most easily overlooked by printing plants—many customers purchase aluminum foil laminated bags, yet the printing plant uses ordinary PE lamination for them, resulting in gas permeability that is several orders of magnitude worse.

In December 2024, one of our coffee capsule customers received a return shipment. The customer had ordered aluminum foil composite bags with a shelf life of 18 months. However, the printing supplier used ordinary PET/PE composite bags, causing the coffee to oxidize within 3 months. The entire batch of 50000 bags was returned, resulting in a loss of 150000 yuan.

3 Cost Breakdowns Before the Print Factory Submission

Based on 6 types of inspections, printers must calculate three accounts before sending products for inspection:

3 Simple Methods for Printers to Conduct Self-Testing

If the printing plant wants to save money, it can conduct a self-test before submitting the sample for inspection:

The pass rate for products that undergo self-inspection before being submitted for inspection is 95%, whereas the pass rate for products submitted directly for inspection is only 60-70%. Self-inspection is low-cost, while the cost of rework for nonconforming products is high.

Further reading