GB 9106-1994Packaging containers -- Two-piece can -- Part 1: Aluminum easy open end and aluminum can (English PDF)

4.1 Tank

4.1.1 Two-piece cans are divided into.200 series, 202 series and 206 series according to the can mouth model. The main specifications are shown in Table 1.

4.1.2 The model code of the two-piece tank consists of the cover diameter, the mouth diameter code, the tank nominal diameter code, the tank height code and the nominal capacity.

4.2 Aluminum Easy Open Lid

Aluminum easy-open lids are divided into ring-pull type and piece-retained easy-open lids, as shown in Figure 1.

4.3 Structure size

4.3.1 The main dimensions of the tank should meet the requirements of Table 2, Table 3 and Table 4, as shown in Figure 2.

5.1 Basic requirements

5.1.1 The structural dimensions of the product should meet the requirements of 4.3, and the special tank type shall be negotiated between the supplier and the buyer.

5.1.2 The product has different requirements for the physical and chemical properties of the inner coating film and sealant due to the different filling contents.

The manufacturer shall provide samples to the buyer for filling test and obtain confirmation.

5.2 Tank

5.2.1 Appearance quality

5.2.1.1 The pattern and color of the product should be negotiated between the supplier and the buyer.

5.2.1.2 See Table 6 for the appearance quality requirements of tanks.

5.2.2 Physical properties

The physical properties of the tank should meet the requirements of Table 7.

5.2.3 Film quality

The coating film inside and outside the tank should be cured and adhere well. If the content has sterilization process requirements, according to the sterilization process requirements of the content, After the coating film sterilization test, there should be no defects such as peeling, discoloration and blistering.

5.3 Aluminum Easy Open Lid

5.3.1 Appearance quality

The appearance quality requirements of aluminum easy-opening lids are shown in Table 8.

5.3.2 Physical properties

The physical properties of aluminum easy-opening lids should meet the requirements in Table 9.

5.3.3 Quality of coating film

The inner and outer coating film of the aluminum easy-opening lid should be cured and adhere well. If the content has sterilization process requirements, according to the sterilization process requirements of the content, After the internal and external coating film sterilization test, there should be no defects such as peeling, discoloration and blistering.

5.4 Food safety requirements

5.4.1 Metal materials should meet the requirements of GB 4806.9.

5.4.2 The inner wall paint of the product should meet the requirements of GB 4806.10.

5.4.3 The aluminum easy-open lid sealant should meet the requirements of GB 4806.11.

5.4.4 Additives for food contact materials should comply with GB 9685 and relevant national announcements.

6.1 Dimensional inspection

Use a special or general measuring tool to measure, and the minimum reading value of the measuring tool is not greater than 0.01mm.

6.2 Visual inspection

Under natural light, check visually at a distance of 60cm.

6.3 Axial pressure test of tank

Use the tank axial bearing pressure tester with the minimum reading value not greater than 10N to read the maximum reading value.

6.4 Compressive strength test of tank

Use the tank bottom pressure strength tester with the minimum reading value not greater than 1kPa to read the maximum reading value.

6.5 Test of integrity of coating film inside the tank

Add electrolyte [1%(m/V) sodium chloride solution] in the tank, the liquid level is 3mm from the tank mouth, and the minimum reading value is not more than 0.1mA the inner coating film integrity tester tests the coating film inside the tank and reads the current value in the 4th second.

6.6 Sterilization test of internal and external coating film

6.6.1 Pasteurization. Use a constant temperature water bath, put the sample in distilled water at a temperature of (68±2) °C, take it out after 30 minutes of constant temperature, and check Whether the internal and external coating film has discoloration, blistering and shedding.

6.6.2 High-temperature sterilization. The tank is filled with distilled water at room temperature, and sealed with a lid. Put the sample into the high-temperature cooking pot and add an appropriate amount of steam.

Heat the distilled water to 121°C and keep it for 30min. After cooling, pour out the distilled water. After natural drying, check the internal and external coating film for discoloration, blistering and shedding.

6.7 Compressive strength test of aluminum easy-open lid

Use an easy-open lid compression strength tester with the smallest reading value not greater than 1kPa to read the reading when the lid is deformed.

6.8 Sealing test of aluminum easy-open lid

During the 6.7 test, keep the test pressure at 610kPa, hold the pressure for 1 min, and observe whether the sample leaks.

6.9 Integrity test of inner coating film of aluminum easy-open lid

Add electrolyte [1% (m/V) sodium chloride solution] to the test cup, install the sample cover, and use the inner with the smallest reading value not greater than 0.1 mA the coating film integrity tester tests the coating film inside the cap and reads the current value in the 4th second.

6.10 Test of breaking force and full opening force of aluminum easy-opening lid

6.10.1 Use a breaking force/full opening force tester with a minimum reading value not greater than 1N. The full travel time of the instrument is 15s.

6.10.2 Pull-ring type breaking force and full-opening force test. Place the aluminum easy-opening cover on the measuring bracket, and the bracket is fixed at a backward 30° 60°) position, read the readings at the moment the lid is opened and when the tab is completely torn off the lid.

6.10.3 Breaking force and full-opening force test. put the aluminum easy-opening lid into a horizontal bracket, the bracket and the tension chain are at 60°, and read the lid opening successively.

The reading value at the moment of opening and when the tongue is fully opened according to the pre-marked line.

6.11 Open reliability test

Open the aluminum easy-opening cover positively by hand or a simple tool, and observe whether the pull ring (sheet) falls off and opens completely.

6.13 Food safety inspection

The food safety inspection of metal materials, product inner wall coatings, aluminum easy-opening sealants, and additives for food contact materials shall be in accordance with GB 4806.9, Implementation of GB 4806.10, GB 4806.11, and GB 9685.

7.1 Basic requirements

7.1.1 The product quality shall be sampled in accordance with the sub-sampling plan of 11.1.2 in GB/T 2828.1-2012, and shall be inspected in accordance with Chapter 5 and Chapter 6.

7.1.2 The quality department of the manufacturer shall inspect the product and issue a certificate of conformity in accordance with the provisions of this section.

7.1.3 Product inspection is divided into factory inspection and type inspection.

7.2 Factory inspection

The ex-factory inspection items are product structure size (5.1.1), tank appearance quality (5.2.1), and aluminum easy-opening lid appearance quality (5.3.1).

7.3 Type inspection

7.3.1 Type inspection items are all items in Chapter 5 (except 5.1.2).

7.3.2 In one of the following situations, type inspection shall be carried out.

a) Product (or conversion of old products) for trial formulation and appraisal;

b) When changes in structure, materials, and processes may affect product performance;

c) Normal production, inspection once a year;

d) When production resumes after a long-term shutdown;

e) When the factory inspection results are significantly different from the last type inspection;

f) When the national quality supervision agency requests for type inspection.

7.4 Sampling inspection plan

Factory inspection and type inspection (except food safety requirements) shall be sampled according to the plans listed in Table 10 and Table 11.

7.5 Determination of qualified batch

All the inspection results of all inspection items are qualified, and the batch of products is determined to be qualified.

8.1 Logo

8.1.1 The tank body and aluminum easy-opening lid shall bear the manufacturer's logo.

8.1.2 The pallet packaging or packing box of the product should be accompanied by an inspection certificate, and the certificate should indicate the name of the manufacturer, product name, specification, and manufacturing Date, batch number, quantity and inspection mark.

8.1.3 The labeling of product information shall comply with the provisions of GB 4806.1.

8.1.4 The recycling mark shall comply with the requirements of GB/T 18455.

8.2 Packaging

8.2.1 Packaging materials

The packaging materials should be clean, dry, non-toxic, harmless, free from peculiar smell and pollution.

8.2.2 Tank packaging

8.2.2.1 The tank is packed in trays. The size of the pallet can be determined according to the requirements of users and transportation. The number of tanks per layer and the number of layers are negotiated by both the supply and the demand.

The layers should be separated by neutral cardboard or suitable materials, put on the top plate and tied with packing tape, and then wrapped with plastic film.

8.2.2.2 The top plate and tray shall be made of wood or other suitable materials.

8.2.3 Aluminum easy-open lid packaging

8.2.3.1 The aluminum easy-open lid is packed in neutral packaging paper bags or suitable materials, and the bag should not be sealed with paper staples or iron nails.

8.2.3.2 The aluminum easy-open lid is bagged and packed in a box or pallet. It can also be packed in other reliable ways.

8.3 Transportation

The means of transportation should be clean, dry, free from odor, pollution, etc. Avoid rain, sun, damp pollution and damage during transportation.

8.4 Storage

The product should be stored in a dry, ventilated and clean warehouse, free from pollution, damage and direct sunlight.