HJ 571-2010 (HJ571-2010)

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HJ 571-2010: PDF in English
HJ 571-2010
HJ
INDUSTRY STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
Replacing HBC 17-2003
Technical requirement for environmental
labeling products - Wood based panels and
finishing products
ISSUED ON. MAY 04, 2010
IMPLEMENTED ON. JULY 1, 2010
Issued by. Ministry of Environmental Protection of the People’s Republic
of China
Ministry of Environmental Protection of the People’s Republic of China
Announcement
2010 No.41
In order to implement “Environmental Protection Law of the People’s Republic of China”,
protect environment, and promote technology advancement, “Technical requirement for
environmental labeling products - Cases and bags” and other 4 standards are hereby
approved and released as national environmental protection standards. Standard names
and numbers are as follows.
I. Technical requirement for environmental labeling products - Cases and bags (HJ
569-2010)
II. Technical requirement for environmental labeling products - Toner cartridge (HJ
570-2010)
III. Technical requirement for environmental labeling products - Wood based panels
and finishing products (HJ 571-2010)
IV. Technical requirement for environmental labeling products - Stationery (HJ
572-2010)
V. Technical requirement for environmental labeling products - Ink-jet cartridge (HJ
573-2010)
Above standards shall be implemented from July 1, 2010; and published by China
Environmental Science Press. The contents of standards can be found at the website of
Ministry of Environmental Protection (bz.mep.gov.cn).
Announcement is hereby given.
May 4, 2010
Table of Contents
Foreword ... 4 
1  Application scope ... 5 
2  Normative references ... 5 
3  Terms and definitions ... 5 
4  Basic requirements ... 6 
5  Technical contents ... 6 
6  Test methods ... 7 
Annex A ... 8 
Foreword
In order to implement “Environmental Protection Law of the People’s Republic of China”,
reduce the impact of wood based panels and finishing products on environment and
human health during production and use process, and protect environment, this Standard
is formulated.
This Standard sets forth requirements for raw materials used in wood based panels and
finishing products, banned substances during timber processing, adhesives, coatings,
total volatile organic compounds (TVOC) emission rate and formaldehyde emission.
This Standard revises “Technical requirement for environmental labeling products - Wood
based panels and finishing products” (HBC 17—2003); the main changes are as follows.
— Add the requirements for the sources of raw materials and processing;
— Add the requirements for total volatile organic compounds (TVOC) in products;
strengthen the requirements for formaldehyde emission;
— Modify the requirements for coatings; partially allow the use of waterborne coating
and solvent-based wood coatings that meet requirements.
HBC 17-2003 “Technical requirement for environmental labeling products - Wood based
panels and finishing products” shall be abolished, from the date of implementation of this
Standard.
This Standard is applicable to product certification for Chinese environmental mark.
This Standard was organized and drafted by Department of Science, Technology and
Standards of Ministry of Environmental Protection.
Main drafters of this Standard. Environmental Development Center of Ministry of
Environmental Protection, and Shenzhen Academy of Metrology & Quality Inspection.
This Standard was approved by Ministry of Environmental Protection on May 4, 2010.
This Standard shall be implemented from July 1, 2010.
This Standard shall be interpreted by Ministry of Environmental Protection.
Previous versions replaced by this Standard are as follows.
— HJBZ 37-1999, HBC 17-2003.
Annex A
(Normative)
Emission Rate Determination of Total Volatile Organic Compounds
(TVOC) in Wood Based Panels and Finishing Products - Climate
Chamber Test Method
A.1 Scope
This Annex specifies a test method of determining the emission rate of total volatile
organic compounds (TVOC) in wood based panels and finishing products under specific
environmental conditions of climate chamber.
This Annex applies to emission rate determination of total volatile organic compounds
(TVOC) in wood based panels and finishing products.
A.2 Method principles
Put samples with 1 m2 surface area into climate chamber of which the temperature,
relative humidity, air velocity and air exchange rate are controlled under predetermined
conditions. Volatile organic compounds (VOC) are emitted from samples and mixed with
the air inside chamber; collect the air in chamber to determine VOC concentration in air.
Calculate the total VOC to obtain TVOC emission rate of samples.
A.3 Equipment and reagents
A.3.1 Climate chamber
A.3.1.1 Volume of climate chamber
Volume of climate chamber in this Standard is 1 m3.
A.3.1.2 Materials of climate chamber
Climate chamber’s inner wall, pipeline and test related devices shall be made of materials
with low sporadic and low absorbent materials. The inert against VOC shall be as large as
possible, and shall not absorb VOC to the greatest extent. Chamber’s inner wall shall
have a smooth surface; it may be effectively cleaned with water before testing.
A.3.1.3 Air tightness of climate chamber
To avoid intrusion of surrounding air into cabinet that results in out-of-control over air
exchanger, all binding sites except the joints of door for putting test piece into and taking
them out shall be sealed (door has self-tightness). Climate chamber shall operate under a
slight overpressure condition.
re-treatment is required if it is not used within 4 weeks.
A.3.6 Injectors
10 μl liquid injector, 10 μl gas injector, 1 ml gas injector.
A.3.7 Volatile organic compounds for gas chromatography calibration
A.3.7.1 Standard gas. Prepare the standard gas of which the concentration of compounds
to be tested is known, through determined method. It is recommended that concentration
of compounds of standard gas is about 100 μg/m3.
A.3.7.2 Liquid standard substance. Solvents to be tested are chromatographically pure;
and are not affected by the compounds that flow out together with the compounds to be
tested.
A.3.7.3 Calibration mixed solution. Use liquid standard substance in A.3.7.2 to prepare; it
may also purchase the certified standard mixed solution.
A.3.8 Injection device for preparation of liquid standard series
Conventional gas chromatography inlet. It may be used on-line or assembled separately;
retain carrier gas connections at inlet; the lower end of inlet may be connected to
adsorption tube.
A.4 Sample-taking and pre-treatment
A.4.1 Sampling
Samples shall be drawn from qualified products that manufacturing enterprise produces
recently. For plywood and other large-sized products, after the sample is drawn, remove
50 cm from the surrounding of products, then conduct sample-taking as the test specimen;
for end-product that may be used directly, such as floor boards, it may take draw samples
directly. Sampling area size is based on sample load factor; sample load factor in this
Standard is 1 m2/m3. Protruded part of tenon shall be removed before treatment. For raw
material products such as particle board and plywood, and decorative double-faced
products that may be used directly after coating and veneering, the area is calculated
based on two faces. For single decorative-faced products that may be used directly after
coating and veneering, the area is calculated based on one face. For products of which
the sample testing surface is composed of several pieces, such as flooring products, it
shall take the sample from the middle-part of packaging bag; put the products together
without adhesive; then treat it according to single decorative-faced products. During single
decorative-faced sample treatment, test sample may be treated back to back; the area
that is not counted in calculation may also be treated through above closing method.
Drawn samples shall be wrapped in aluminum foil in accordance with the provisions in
A.4.2, and placed in unprinted airtight sealed polyethylene bags, one for each bag.
Flooring products can use original package. It shall not exceed 1 h from sampling to
Minimum temperature of cold trap. ≤−30°C (based on cold trap type adopted)
Adsorbent in cold trap. Tenax TA, 40~100 mg
Transmission line temperature. 220°C
Split ratio. Split ratios of sample tube to secondary cold trap AND secondary cold trap
to chromatographic column are selected in accordance with gas concentration.
A.5.5.2 Gas chromatographic analysis reference conditions
Column temperature program shall be set for compounds of which the analysis boiling
point and polarity difference are large, so as to obtain test results in the shortest time.
Such as, dimethyl siloxane capillary column of which the length is 50 m, inner diameter is
0.25 mm, and tube wall is 0.32 μm shall be adopted. The column operating conditions are
programmed temperature rising; initial temperature maintains at 50°C for 10 min;
programmed temperature rises to 250°C at...
......
(Above excerpt was released on 2015-04-06, modified on 2021-06-07, translated/reviewed by: Wayne Zheng et al.)
Source: https://www.chinesestandard.net/PDF.aspx/HJ571-2010