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GBT17030-2019

Chinese Standard: 'GBT17030-2019'
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GB/T 17030-2019
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 55.040
A 82
Replacing GB/T 17030-2008
Polyvinylidene Chloride (PVDC)
Flat-Film for Food-Packaging
食品包装用聚偏二氯乙烯(PVDC)片状肠衣膜
ISSUED ON: MAY 10, 2019
IMPLEMENTED ON: DECEMBER 01, 2019
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Classification ... 5
4 Technical Requirements ... 5
5 Test Methods ... 7
6 Inspection Rules ... 9
7 Marking, Package, Transportation and Storage ... 10
Polyvinylidene Chloride (PVDC)
Flat-Film for Food-Packaging
1 Scope
This Standard specifies the classification, technical requirements, test methods,
inspection rules, marking, package, transportation and storage of polyvinylidene
chloride (PVDC) flat-film for food-packaging.
This Standard is applicable to the polyvinylidene chloride (PVDC) flat-film (hereinafter
referred to as flat-film) prepared by blow molding using polyvinylidene chloride resin
as the main raw material.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB/T 1037-1988 Test Method for Water Vapor Transmission of Plastic Film and
Sheet - Cup Method
GB/T 1038 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 2981 Technical Specification of Pneumatic Tyres for Industrial Vehicles
GB 4806.1 National Food Safety Standard - General Safety Requirements on
Food Contact Materials and Articles
GB 4806.7 National Food Safety Standard - Food Contact Plastic Materials and
Articles
GB/T 6672 Determination of Thickness of Plastic Film and Sheeting by Mechanical
Scanning
than 10× to measure the diameter of the carbonization points and impurities in the flat-
film.
5.4 Printing quality
5.4.1 Visually examine the printing quality of the flat-film under the natural light.
5.4.2 Use the 20× magnifier with accuracy of 0.01mm to measure the overprinting error
between any two colors on the primary and secondary positions of the sample;
separately measure three points; then take the average value as the overprinting error
of the primary and secondary positions.
5.5 Specification and size
5.5.1 The thickness test shall be carried out as per the provisions of GB/T 6672; use
the maximum and minimum thickness measurement values to calculate the limit
deviation of the thickness.
5.5.2 The length and width inspection shall be carried out as per the provisions of GB/T
6673.
5.6 Physical and mechanical properties
5.6.1 Tensile strength and nominal tensile strain at break
It shall be carried out as per the provisions of GB/T 1040.3-2006. Adopt Type-2 sample;
sample width is 15mm±0.1mm; length is greater than or equal to 150mm; the clamp
spacing of the sample is 100mm±1mm; test speed (no-load) is 250mm/min±25mm/min.
The results shall take the average value, retaining the integer digits.
5.6.2 Tear resistance force
It shall be performed as per the provisions of GB/T 16578.2.
5.6.3 Heat shrinkage rate
It shall be performed as per the provisions of GB/T 12027. The heating medium is air;
test temperature is 120°C±2°C; test time is 30min.
5.6.4 Water vapor transmission rate
It shall be performed as per the Condition-2 in GB/T 26253-2010 or Condition-A in
GB/T 1037-1988; and the arbitration shall be performed as per the method in GB/T
26253-2010.
5.6.5 Oxygen gas transmission rate
It shall be performed as per the provisions of GB/T 19789 or GB/T 1038; test
d) When resuming production after more than half a year shutdown;
e) When exit-factory inspection results have significant differences with the previous
type inspection;
f) When the quality supervision agency proposes the inspection requirements.
6.4 Judgement Rules
6.4.1 If the appearance, printing quality, specification and size inspection results of the
flat-film meet the technical requirements; then such batch of products are judged to be
qualified; if one item is unqualified; and the double sampling reinspection is still
unqualified, t......
Related standard:   GB/T 17858.3-2020
   
 
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