GB 4806.14-2023 PDF English
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National food safety standard - Ink for food contact materials and products
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GB 4806.14-2023: PDF in English GB 4806.14-2023
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
National food safety standard - Ink for food contact
materials and products
ISSUED ON: SEPTEMBER 06, 2023
IMPLEMENTED ON: SEPTEMBER 06, 2024
Issued by: National Health Commission of PRC.
State Administration for Market Regulation.
Table of Contents
1 Scope ... 3
2 Terms and definitions ... 3
3 Product categories ... 3
4 Basic requirements ... 3
5 Technical requirements ... 4
6 Others ... 6
Appendix A Determination of lead, mercury, cadmium, chromium, arsenic in inks for
food contact materials and products ... 8
National food safety standard - Ink for food contact
materials and products
1 Scope
This standard applies to inks for food contact materials and products and the printing
ink layers formed thereon.
2 Terms and definitions
2.1 Inks for food contact materials and products
Ink that is expected to be printed on food contact materials and products, in direct
contact with food or in indirect contact with food but whose components may be
transferred to food. It also includes varnish used with inks.
3 Product categories
According to whether they are in direct contact with food, inks for food contact
materials and products can be divided into two categories:
- Inks for direct contact with food: Inks printed on the food contact surfaces of food
contact materials and products, that are expected to come into direct contact with
food;
- Indirect food contact inks: Inks printed on non-food contact surfaces of food
contact materials and products, that are not expected to come into direct contact
with food, BUT whose components may be transferred to food.
4 Basic requirements
4.1 Inks used for food contact materials and products shall comply with the
requirements of GB 4806.1.
4.2 Ink manufacturers for food contact materials and products shall control the safety
risks of ink products, through formula design, raw material selection, production
process control, product information transmission and other measures.
4.3 Enterprises printing food contact materials and products shall control safety risks
arising from inks, through packaging design, raw material selection, printing process
control, product information transmission and/or adding effective barrier layers. Under
the premise of achieving the expected printing effects, it shall minimize the usage of
ink.
4.4 The production and printing process of inks for food contact materials and products
shall comply with the relevant requirements of GB 31603.
5 Technical requirements
5.1 Raw material requirements
5.1.1 Basic raw materials
5.1.1.1 The basic raw materials used in inks for direct contact with food shall be
substances approved for use in GB 2760 and related announcements; their quality
specifications shall meet the requirements of relevant standards.
5.1.1.2 Inks for indirect contact with food shall not use colorants based on lead, mercury,
cadmium, chromium (VI), arsenic, antimony, selenium or their compounds. The
colorants used shall comply with the purity requirements for colorants in GB 9685.
Other basic raw materials shall be those approved in China for use in food contact
materials and products. The same basic raw materials used in inks for direct contact
with food can also be used in inks for indirect contact with food.
5.1.2 Additives
5.1.2.1 The additives used in the inks for direct contact with food shall be substances
approved for use in GB 2760 and related announcements; their quality specifications
shall meet the requirements of relevant standards.
5.1.2.2 The additives used in inks for indirect contact with food shall comply with the
requirements of GB 9685 and related announcements. Additives used in inks for direct
contact with food can also be used in the inks for indirect contact with food.
5.2 Sensory requirements
The sensory requirements of food contact materials and products printed with ink shall
comply with the provisions of Table 1.
Appendix A
Determination of lead, mercury, cadmium, chromium, arsenic in inks for food
contact materials and products
A.1 Scope
This Appendix specifies the inductively coupled plasma emission spectrometry method
for the determination of lead, mercury, cadmium, chromium, arsenic in inks for food
contact materials and products.
This Appendix is applicable to the determination of lead, mercury, cadmium, chromium,
arsenic in inks for food contact materials and products.
A.2 Principle
The ink is pulverized after the coating film is dried; converted into a solution state
through acid digestion. After diluting the obtained solution to a constant volume, it is
measured using an inductively coupled plasma emission spectrometer. The
characteristic spectral line wavelength of each element is used for qualification and
external standard method for quantification.
A.3 Reagents and materials
Unless otherwise stated, the reagents used in this method are of superior purity or higher;
the water is grade-1 water specified in GB/T 6682.
A.3.1 Reagents
A.3.1.1 Nitric acid (HNO3).
A.3.1.2 Hydrochloric acid (HCl).
A.3.1.3 Hydrofluoric acid (HF).
A.3.1.4 Gold element (Au) hydrochloric acid solution (1000 mg/L): The solvent is 10%
(mass fraction) hydrochloric acid.
A.3.1.5 Argon (Ar): Purity ≥ 99.99%, or liquid argon.
A.3.2 Reagent preparation
A.3.2.1 Nitric acid solution (2 + 98): Measure 20 mL of nitric acid; slowly add it to 980
mL of water; mix well.
A.3.2.2 Nitric acid solution (1 + 5): Measure 500 mL of nitric acid; slowly add it to
2500 mL of water; mix well.
A.4.5 Ultraviolet light curing machine (UV curing machine): UV wavelength 365 nm
or 395 nm.
A.4.6 Ultrasonic water bath.
A.4.7 Glass plates.
A.4.8 Nylon screen: Pore diameter 4 mm (5 mesh).
A.4.9 Filter membrane: Polyethersulfone material, pore size 0.45 μm.
A.5 Analytical procedures
A.5.1 Specimen preparation
Use a sampler to take samples according to GB/T 3186-2006. Disperse the specimen
evenly on the glass plate to prepare a coating film. Cure the specimen according to the
ink type, until it is completely dry. Then crush the specimen.
A.5.1.1 Water-based and solvent-based inks
After preparing the coating film, use a constant temperature drying oven to heat cure
and dry the film. The temperature shall not exceed 90 °C. After the coating film is
completely dry, cool it to room temperature and crush it to less than 4 mm, using a glass
rod. In order to facilitate complete digestion of the specimen, the specimen can be
placed in a nylon sieve for sieving.
A.5.1.2 UV and offset inks
After preparing the coating film, use a UV curing machine for curing. After the coating
film is completely dry, cool it to room temperature and crush it to less than 4 mm, using
a glass rod. In order to facilitate complete digestion of the specimen, the specimen can
be placed in a nylon sieve for sieving.
Note: If it needs to determine whether the coating film is completely dry, it can regularly use a
pin to scratch the ink coating film, to observe whether the scratches close up within 5 minutes;
if not, the coating film is completely dry.
A.5.2 Specimen digestion
A.5.2.1 Microwave digestion
Weigh 0.5 g of the crushed specimen (accurate to 0.1 mg). Place it in the
polytetrafluoroethylene digestion inner tank. Add 6 mL of nitric acid (A.3.1.1), 2 mL
of hydrochloric acid (A.3.1.2), 2 mL of hydrofluoride acid (A.3.1.3). Seal the digestion
tank and place it in a microwave digestion instrument. Digest it according to the
standard operating procedures of the microwave digestion instrument. The digestion
conditions can be carried out, according to Table A.2. After the digestion is completed,
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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