PDF GB/T 21302-2007 English
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General rules of laminated films and pouches for packaging
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GB/T 21302-2007: PDF in English (GBT 21302-2007) GB/T 21302-2007
GB
ICS 83.140.10
G 33
General rules of laminated films and pouches for
packaging
ISSUED ON. DECEMBER 05, 2007
IMPLEMENTED ON. SEPTEMBER 01, 2008
Issued by.
General Administration of Quality Supervision, Inspection
and Quarantine of the People’s Republic of China;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms, definitions, symbols and abbreviations ... 5
4 Classification ... 8
5 Requirements ... 9
6 Test methods ... 13
7 Inspection rules ... 17
8 Marking, packaging, transportation and storage ... 18
Foreword
This Standard was proposed by China Light Industry Council.
This Standard shall be under the jurisdiction of National Standardization Technical
Committee of Plastic Products.
Drafting organizations of this Standard. Composite Film Professional Committee of China
Plastics Processing Industry Association, Shanghai People Plastic Printing Factory,
Shanghai Zijiang Color-Printing Packaging Co., Ltd., Wuxi Guotai Color-Printing Co., Ltd.,
Jiangsu Caihua Packaging Group Co., Lianyungang Zhongjin Medicinal Packaging Co.,
Ltd.
Main drafters of this Standard. Wu Shiming, Gu Hongqing, Cai Mingyu, Gao Xuewen, Yin
Qiqian, Wen Xiusong, Zhang Lieyin and Tian Guohong.
This Standard is developed for the first time.
General Rules of Laminated Films and Pouches for Packaging
1 Scope
This Standard specifies the terms, definitions, symbols, abbreviations, classification,
requirements, test methods, inspection rules, packaging, transportation and storage of
laminated films and pouches for packaging that are made of different materials through
different lamination methods.
This Standard applies to laminated films and pouches for food and non-food packaging; it
is not applicable to laminated films and pouches for pharmaceutical packaging.
2 Normative references
The articles contained in the following documents have become part of this document
when they are quoted herein. For the dated documents so quoted, all subsequent
modifications (excluding corrigendum’s contents) or revisions made thereafter do not
apply to this Standard. However, the parties who reach an agreement according to this
Standard are encouraged to study whether the latest versions of these documents may be
used. For the undated documents so quoted, the latest versions (including all modification
sheets) apply to this document.
GB/T 191 Packaging - Pictorial marking for handling of goods (GB/T 191-2000, eqv
ISO 780.1997)
GB/T 1037-1988 Test method for water vapor transmission of plastic film and sheet -
Cup method (neq ASTM E96.1980)
GB/T 1038-2000 Plastics - Film and sheeting - Determination of gas transmission -
Differential-pressure method (neq ISO 2556.1974)
GB/T 1410-2006 Methods of test for volume resistivity and surface resistivity of solid
electrical insulating materials (IEC 60093.1980, IDT)
GB/T 1040. 3-2006 Plastics - Determination of tensile properties - Part 3. Test
conditions for films and sheets (ISO 527-3.1995, IDT)
GB/T 2410-1980 Transparent plastics - Transmissivity and haze test (eqv ASTM
D1003.1977)
GB/T 2918-1998 Plastics - Standard atmospheres for conditioning and testing (idt ISO
291.1997)
GB/T 5009.60-2003 Method for analysis of hygienic standard of products of
polyethylene, polystyrene and polypropyrene for food packaging
GB/T 5009.119-2003 Determination of diaminomethylbezen of complex for food
packaging material
GB/T 6672-2001 Plastics film and sheeting - Determination of thickness by mechanical
scanning (idt ISO 4593.1993)
GB/T 6673-2001 Determination of length and width of plastics film and sheeting (idt
ISO 4592.1992)
GB/T 7707-1987 The intaglic prints for decorating (neq ISO 5737.1983)
GB/T 8808-1988 Test method for peel force of flexible laminated plastics (neq DIN
53357.1982)
GB/T 8809-1988 Test method for pendulum impact resistance of plastic films (neq
ASTM D3420.1984)
GB 9683 Hygienic standard for composite laminated food packaging bag
GB/T 10006-1988 Plastics - Film and sheeting - Determination of the coefficients of
friction (idt ISO 8295.1986)
GB 12904-2003 Bar code for commodity (ISO/IEC 15420.2000, NEQ)
GB/T 14257-2002 Location of bar code symbol for commodity
GB/T 14258-2003 Information technology - Automatic identification and data capture
techniques - Verification of print quality of bar code symbols (ISO/IEC 15416.2000,
MOD)
GB/T 17497-1998 Decorative products by flexo printing
GB/T 18348-2001 Verification of print quality of bar code for commodity (ISO/IEC
15416.2000, NEQ)
QB/T1130-1991 Test method of plastic right-angle tear property
QB/T2358-1998 Test method of heat-seal strength of plastic film packaging bag
3 Terms, definitions, symbols and abbreviations
The following terms, definitions, symbols and abbreviations apply to this Standard.
3.1 Terms, definitions and symbols
3.1.1
Material
Here it refers to different types of resins, plastic films, coated films, paper, aluminum foil,
etc.
3.1.2
Lamination method
Dry lamination, wet lamination, wet lamination, extrusion lamination, coextru-lamination,
etc.
3.1.3
Laminated films
It is composed of two or more kinds of materials.
3.1.4
Pouch
Pouch that is made through hot-seal method, has longitudinal seam and bottom seam, of
which the top is sealed through heat-seal method after filling of contents.
3.1.5
Dry lamination
Laminated film manufacturing method that the adhesive between lamination materials is
free of volatile substance (e.g. solvent, etc.) during lamination forming.
Symbol “/dr.” is placed in between English abbreviations of two materials to indicate dry
lamination, e.g. BOPP/dr. LDPE.
Symbol “/sf.” is placed in between English abbreviations of two materials to indicate
solvent-free lamination, e.g. BOPA/sf. LDPE.
3.1.6
Wet lamination
Laminated film manufacturing method that the adhesive between lamination materials has
volatile substance during lamination forming.
Symbol “/wt.” is placed in between English abbreviations of two materials to indicate wet
lamination, e.g. PAPER/wt. AL.
3.1.7
Extrusion lamination
Laminated film manufacturing method that an extruder is used to extrude adhesive resin
for lamination forming of laminated materials.
Symbol “/ex.” is placed in between English abbreviations of two materials to indicate
extrusion lamination, e.g. BOPP/ex. LDPE.
3.1.8
Coextru-lamination
Laminated film manufacturing method that two or more extruders are used to extrude
same or different materials for coextru-forming by multi-layer die-heads.
Symbol “/co.” is placed in between English abbreviations of two materials to indicate
coextru-lamination, e.g. PP/co. EVA/co. LDPE.
3.2 Abbreviations
ABS (Acrylonitrile/Butadiene/Styrene) Copolymer
AS (Acrylonitrile/Styrene) Copolymer
AL Aluminum foil
BOPA Biaxially Oriented Polyamide (Nylon)
BOPET Biaxially Oriented Polyester (Polyethylene Terephthalate)
BOPP Biaxially Oriented Polypropylene
CPE Cast Polyethylene
CPP Cast Polypropylene
EAA (Ethylene/Acrylic Acid) Copolymer
EEA (Ethylene/Ethyl Acrylate) Copolymer
EMA (Ethylene/Methacrylic Acid) Copolymer
EVA (Ethylene/Vinyl Acetate) Copolymer
EVOH (Ethylene/Vinyl Alcohol) Copolymer
HDPE High Density Polyethylene
LDPE Low Density Polyethylene
5.2.1 Gravure-printing
Gravure-printing quality shall comply with the provisions of GB/T 7707-1987.
5.2.2 Flexographic printing
Flexographic printing quality shall comply with the provisions of GB/T 17497-199.
5.2.3 Bar code printing
Bar code printing shall comply with the provisions of GB 12904-2003 and GB/T
14257-2002.
5.3 Specifications
5.3.1 Dimensional deviation of flat film
Dimensional deviation of flat film in length is determined by both supplying-demanding
sides through negotiation; dimensional deviation in width is ±2 mm; average width
deviation is ±10%.
5.3.2 Dimensional deviation of roll film
Width deviation is ±2 mm; thickness deviation is ±10%. When roll film is delivered based
on length, its length shall not have negative deviation; when it is delivered based on
quality, its quality shall not have negative deviation.
5.3.3 Dimensions and deviation of copper core of roll film
Inner diameter is mm or mm; special requirements are determined by both
supplying-demanding sides through negotiation.
5.3.4 Dimensional deviation of pouches
Dimensional deviation of pouches shall comply with the provisions in Table 3.
Table 3 Dimensional deviation of pouches
Pouch
Length/mm
Length
Deviation/mm
Width
Deviation/mm
Seal Width
Deviation/%
Distance from Seal to
Pouch-edge/mm
< 100 ±2 ±2 ±20 ≤4
100~400 ±4 ±4 ±20 ≤5
>400 ±6 ±6 ±20 ≤6
Note. Average thickness deviation of pouches is ±10%.
5.4 Physical and mechanical properties
5.4.1 Pulling strength
Classification of pulling strength is shown in Table 4.
Table 4 Classification of pulling strength
Item Level 1 Level 2 Level 3 Level 4 Level 5
Pulling Strength/(...
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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