GB/T 39415.2-2020 PDF English
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| GB/T 39415.2-2020 | English | 110 |
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Packaging sacks - Method of specifications for characteristics - Part 2:SAcks made from thermoplastic flexible film
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GB/T 39415.2-2020: Packaging sacks - Method of specifications for characteristics - Part 2:SAcks made from thermoplastic flexible film
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT39415.2-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 55.080
A 82
Packaging sacks - Method of specifications for
characteristics - Part 2: Sacks made from
thermoplastic flexible film
(ISO 8351-2:1994, Packaging - Method of specification for sacks -Part
2: Sacks made from thermoplastic flexible film, MOD)
ISSUED ON: NOVEMBER 19, 2020
IMPLEMENTED ON: JANUARY 01, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Method of specifications ... 5
Packaging sacks - Method of specifications for
characteristics - Part 2: Sacks made from
thermoplastic flexible film
1 Scope
This Part of GB/T 39415 specifies the method of specifications for
characteristics in ordering documents of sacks made from thermoplastic flexible
film.
This Part is applicable to the sacks made from thermoplastic flexible film
specified in GB/T 17858.2. It may refer to this Part when formulating standards
for various paper sacks.
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 17858.2, Packaging sacks - Vocabulary and types - Part 2: Sacks
made from thermoplastic flexible film (GB/T 17858.2-2010, ISO 6590-2:1986,
MOD)
GB/T 31556.2, Packaging sacks - Description and method of measurement
for dimension - Part 2: Sacks made from thermoplastic flexible film (GB/T
31556.2-2015, ISO 6591-2:1985, MOD)
3 Method of specifications
3.1 General
When drafting the ordering documents for sacks made from thermoplastic
flexible film, both the supplier and the purchaser shall negotiate and select the
appropriate content from the following options to be included in the order
document.
The format of the order document shall be negotiated between the supplier and
- Sack width, b;
- Frill width, e;
- Sack bottom width, c;
- Valve port width, g;
- Valve port length, f;
- Valve sleeve length, i;
- Valve sleeve position, l: the distance between the outermost edge of the
sack and the outermost edge of the valve sleeve is measured parallel to
the bottom.
3.2.4 Material
It shall specify the type, quantitative [in grams per square meter (g/m2)] or
thickness [in micron (μm)] of each layer of material, surface treatment (such as
anti-slip, anti-static). If there is surface treatment, it shall be stated that the
treatment surface faces inward, outward or double-sided treatment.
The material shall specify the following requirements:
- Separable or integral;
- Paper type (such as ordinary paper sack paper, stretchable paper sack
paper) and basis weight;
- Film types, such as: low density polyethylene (PE-LD), linear low-density
polyethylene (PE-LLD), high density polyethylene (PE-HD),
polyvinylidene chloride (PVDC), ethylene-vinyl acetate Ester copolymer
(E/VAC);
- Film state (flat film or tube film);
- Film thickness in micrometers (μm);
- Melt flow index of the film, in grams per 10 minutes (g/10min);
- Length, in millimeters (mm), when it is different from other layers (usually
seen in separable or integrated tube films);
- Width of the ruffle, in millimeters (mm), when it is different from other layers
(usually seen in a separable or integrated tube film);
- Width, in millimeters (mm), when it is different from other layers (usually
seen in separable or integrated tube films);
The bottom direction requirements include:
- Fold to the front of the sack;
- Fold to the back of the sack.
3.2.10 Heat seal sealing
Heat seal sealing requirements include:
- Heat sealing margin, n, in millimeters (mm);
- Heat sealing position: the top or bottom of the sack, the top and bottom are
determined according to the printed content.
3.2.11 Filling port (for open sack only)
The requirements for filling port of open sack include:
- Horizontal pasting (with/without):
• All layers;
• Innermost layer has no horizontal pasting.
- Thumb mouth, yes/no.
3.2.12 Printing
Printing requirements include:
- Color and performance requirements of the ink (such as abrasion
resistance, UV resistance);
- Print a complete description of the requirements and positions of the main
elements, such as the front, back, frills, valve port end, non-valve port end,
and valve port end direction.
3.2.13 Packaging
Packaging requirements include:
- Bundles of sacks: tied/untied/folded;
- Bundled into packages: the total number of bags per package;
- Bundled into pallet units: the total number of bags per unit;
- Bundle stacking method;
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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