GB/T 41169-2021 English PDF (GBT41169-2021)

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GB/T 41169-2021: Paper, aluminum foil and plastic laminated film and pouch for food packaging
GB/T 41169-2021
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 83.140.10
CCS G 32
Paper, aluminum foil and plastic laminated film and pouch
for food packaging
ISSUED ON: DECEMBER 31, 2021
IMPLEMENTED ON: JULY 01, 2022
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Terms, definitions and abbreviations ... 5 
4 Classification ... 7 
5 Requirements ... 8 
6 Test methods ... 11 
7 Inspection rules ... 14 
8 Marks, packaging, transportation and storage ... 16 
Annex A (normative) Test method for adhesion of plastic to paper and paper to
aluminum foil ... 18 
Annex B (normative) Test method for heat sealing strength of composite films ... 19 
Paper, aluminum foil and plastic laminated film and pouch
for food packaging
1 Scope
This Standard specifies terms, definitions, abbreviations, classification, requirements,
test methods, inspection rules and marking, packaging, transportation and storage for
paper, aluminum foil and plastic laminated film and pouch for food packaging.
This Standard is applicable to the film and pouch for food packaging that are made of
plastic, aluminum foil and paper, with a thickness of less than 0.3mm.
This Standard does not apply to liquid food packaging films, pouches; and films and
pouches that need to be sterilized.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 191, Packaging and storage marks
GB/T 451.2, Paper and board - Determination of grammage
GB/T 1037-1988, Test method for water vapor transmission of plastic film and sheet.
Cup method
GB/T 1038-2000, Plastics - Film and Sheeting - Determination of Gas Transmission
- Differential-pressure Method
GB/T 1040.3-2006, Plastics - Determination of Tensile Properties - Part 3: Test
Conditions for Films and Sheets
GB/T 2828.1-2012, Sampling procedures for inspection by attributea - Part 1:
Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot
inspection
GB/T 2918-2018, Plastics - Standard atmospheres for conditioning and testing
GB/T 6673, Determination of Length and Width of Plastics Film and Sheeting
GB/T 7707, The intaglio prints for decorating
GB/T 8808, Test method for peel force of flexible laminated plastics
GB/T 10006, Plastics - Film and sheeting - Determination of the coefficients of
friction
GB 12904, Bar code for commodity - Retail commodity numbering and bar code
marking
GB/T 14257, Bar code for commodity - Bar code symbol placement guidelines
GB/T 14258, Information technology - Automatic identification and data capture
techniques - Verification of print quality of bar code symbols
GB/T 17497.1, Decorative products by flexographic printing - Part 1: Paper
GB/T 17497.2, Decorative products by flexographic printing - Part 2: Plastic film
and foil
GB/T 18348, Bar code for commodity - Bar code symbol print quality verification
GB/T 19789-2005, Packaging materials - Test method for oxygen gas permeability
characteristics of plastic film and sheeting - Coulometric sensor
GB/T 21049, Han Xin code
GB/T 21302-2007, General rules of laminated films and pouches for packaging
GB/T 22364, Paper and board - Determination of bending resistance
GB/T 26253-2010, Determination of water vapour transmission rate for plastics-
film and sheeting - Infrared detection sensor method
QB/T 1130-1991, Plastics Angle Tear Performance Test Method
QB/T 2358-1998, Test Methods for Thermal Sealing Strength of Plastic Film
Packaging Bag
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 paper, aluminum foil, plastic laminated film and pouch
films and bags made of paper, aluminum foil and plastic
Conduct visual inspection under natural light. Measure with a measuring tool with an
accuracy of not less than 0.5mm.
6.3.2 Printing quality
6.3.2.1 Gravure printing quality
According to the provisions of GB/T 7707.
6.3.2.2 Flexographic printing quality
According to the provisions of GB/T 17497.1 or GB/T 17497.2.
6.3.2.3 Barcode printing quality
According to the provisions of GB/T 18348 and GB/T 14258.
6.3.2.4 Han Xin code printing quality
According to the provisions of GB/T 21049.
6.3.3 Mass per unit area (quantitative) deviation
Measure in accordance with the provisions of GB/T 451.2.
6.4 Size deviation
6.4.1 Size deviation of roll film
6.4.1.1 Length and width deviation shall be carried out in accordance with the
provisions of GB/T 6673.
6.4.1.2 Repeated length deviation is measured with a measuring tool with an accuracy
of not less than 0.5mm. Steps: Use a steel ruler to flatten and compress the test sample.
The tick marks are aligned with the edge of the printed electric eye. Take as many
printing units as possible within 1m. Read the data. Then take the average value.
6.4.2 Size deviation of pouch
6.4.2.1 Length and width deviation shall be carried out in accordance with the
provisions of GB/T 6673.
6.4.2.2 Use a measuring tool with an accuracy of not less than 0.5mm to measure the
sealing width of the pouch and the distance between the seal and the edge of the pouch.
6.4.3 Core size and deviation
Use a vernier caliper with a resolution of 0.1mm.
6.4.4 Joint
Visually inspect. The joints shall be clearly marked.
6.5 Physical and mechanical properties
6.5.1 Breaking force
According to the provisions of GB/T 1040.3-2006.
The specimen is in the form of a long strip. The length is ≥150mm. The width is
15mm±0.5mm. The specimen clamp spacing is 100mm±1mm. The tensile speed of the
specimen is 100mm/min±10mm/min. The breaking force is the maximum force during
the stretching process.
6.5.2 Peel force
According to the provisions of GB/T 8808.
6.5.3 Adhesion
The adhesion between plastic and paper, aluminum foil and paper shall be carried out
according to the provisions of Annex A.
6.5.4 Heat sealing strength
Carry out according to the regulations of QB/T 2358-1998 for pouches.
If it leaves the factory in the form of roll film, it shall be carried out in accordance with
the provisions of Annex B. The heat sealing conditions can be negotiated by both parties.
6.5.5 Right angle tear performance
According to the provisions of QB/T 1130-1991.
6.5.6 Oxygen transmission rate
According to the provisions of GB/T 1038-2000 or GB/T 19789-2005. For the
composite film with paper as inner layer or paper as sub-inner layer, when testing, orient
the paper towards the high concentration side. The aluminum foil faces the low
concentration side. GB/T 1038-2000 is the arbitration method.
6.5.7 Water vapor transmission
Carry out according to GB/T 1037-1988 or GB/T 26253-2010. The test conditions: the
temperature is 38℃ ± 0.6℃; the relative humidity is 90% ± 2%. When testing, plastic
or aluminum foil faces the low humidity side. GB/T 1037-1988 is the arbitration method.
6.5.8 Stiffness
According to the provisions of GB/T 22364.
6.5.9 Pressure resistance test
Carry out according to the provisions of 6.5.10 in GB/T 21302-2007.
6.5.10 Drop test