LY/T 3236-2020 PDF English
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LY/T 3236-2020: Grading and evaluation methods for odor of wood-based panels and its products---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/LYT3236-2020
LY
FORESTRY INDUSTRY STANDARD
ICS 79.080
CCS B 70
Grading and evaluation methods for odor of wood-based
panels and its products
Issued on. DECEMBER 29, 2020
Implemented on. JUNE 01, 2021
Issued by. National Forestry and Grassland Administration
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Terms and definitions... 4
4 Test apparatuses... 4
5 Testing room environment... 6
6 Evaluator... 6
7 Test piece preparation... 7
8 Test methods... 8
9 Odor grading... 9
10 Test report... 9
Foreword
This document was drafted in accordance with the rules provided in GB/T 1.1-2020
Directives for standardization - Part 1.Rules for the structure and drafting of
standardizing documents.
Please note that some of the contents of this document may involve patents. The issuing
organization of this document is not responsible for identifying these patents.
This document shall be under the jurisdiction of National Technical Committee 198 on
Wood-based Panels of Standardization Administration of China (SAC/TC 198).
Organizations responsible for drafting this document. Research Institute of Wood
Industry, Chinese Academy of Forestry, Suofeiya Home Collection Co., Ltd., Northeast
Forestry University, Guangdong Topstrong Living Innovation & Integration Co., Ltd.,
Dehua TB New Decoration Material Co., Ltd., Wanhua Chemical Group Co., Ltd., Dare
Wood-Based Panels Group Co., Ltd., Golden Home Living Co., Ltd., Zbom Home
Collection Co., Ltd., Guangdong Yaodonghua Furniture Boards Co., Ltd., Guangxi
Fenglin Wood Industry Group Co., Ltd, Guangxi Sunway Forest Products Industry Co.,
Ltd., Oppein Home Group Inc., Guangdong T&H New Material Co., Ltd., Jiusheng
Wood Co., Ltd., Zhejiang Shiyou Timber Co., Ltd., Guangxi Forestry Research Institute,
Hubei Academy of Forestry, Shanghai Research Institute of Building Sciences (Group)
Co., Ltd., Jiangsu Deluni Wood Industry Co., Ltd., Guangzhou Teehome Decorative
Material Co., Ltd., Jiangsu Joyful New Material Co., Ltd., Yixian Shenglin Board
Industry Co., Ltd., North American Maple Qing Mu (Jiangsu) Co., Ltd., Hunan Fuxiang
Wood Industry Co., Ltd., Dongguan Beihui Decorative Material Co., Ltd., Suzhou
Dawei Wood Industry Co., Ltd., DARE (Jiangsu) Flooring Co., Ltd., Baroque Timber
Industries (Zhongshan) Co., Ltd., Zhejiang Layo Wood Industry Co., Ltd., Guangxi
Guoxu Forestry Development Group Co., Ltd., Huizhou EISYA Wood Technology Co.,
Ltd., Chengdu Meikangsanshan Wood Industry Co., Ltd., Guangdong Weihua
Corporation, Suofeiya Home Furnishing Hubei Co., Ltd., Ruitong Polymer Tech
(Zhejiang) Co., Ltd.
Main drafters of this document. Lv Bin, Huang Anmin, Liu Ru, Li Xinbing, Fu Yuejin,
Zhang Yuping, Shen Jun, Li Botao, Chen Songwu, Zhang Zhongfeng, Zhang Shifeng,
Li Guangrong, Lei Hai, Liu Yuanqiang, Gong Cheng, Cheng Jie, Pan Xiaozhen, Wu
Fushe, Zeng Minhua, Wei Yunhe, Deng Kan, Wang Chen, Jia Dongyu, Gan Lili, Liu
Zhonghui, Dai Yanmei, Chao Jiu, Ni Yuezhong, Fan Na, Chen Xiangjun, Ge Ya, Xu
Haiyu, Yang Fan, Zhao Liyuan, Zou Xianwu, Chen Xianbao, Zhou Qin, Zeng Zhen, Li
Fudong, Xing Xinting, Yu Guangming, Zhang Bo, Kong Xiaoming, Jiang Wei, Ji Juan,
Lin Deying, Ge Xiaohai, Li Xiaobo, Chen Juan, Ye Changhai, Zhou Heng, Xiao
Xuebing, Chun Hua, Lin Qiulan, You Jia, Chen Qian, Tang Lina, Qin Ye, Wang Zhiping.
This document is issued for the first time.
Grading and evaluation methods for odor of wood-based
panels and its products
1 Scope
This document specifies the terms and definitions, test apparatuses, testing room
environment, evaluator, test piece preparation, test method, odor grading and inspection
report of grading and evaluation methods for odor of wood-based panels and its
products.
This document applies to wood-based panels and its products, including plain wood-
based panels, decorated wood-based panels, wooden floors, wooden wall panels,
wooden doors and wood-based panel products.
2 Normative references
The following documents are referred to in the text in such a way that some or all of
their content constitutes requirements of this document. For dated references, only the
dated version applies to this document; for undated references, the latest edition
(including all amendments) applies to this document.
GB/T 11414-2007, Laboratory glassware - Bottles
GB/T 15723-1995, Laboratory glassware - Desiccator
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
4 Test apparatuses
4.1 Wide-mouth glass bottle
It shall comply with the requirements of GB/T 11414-2007, with a volume of 2 500 mL,
a sealed lid that is easy to open and close, and no odor at the temperatures of (20±2) °C
and (65±2) °C. Figure 1 is a typical drawing of the dimensions of a wide-mouth glass
bottle.
4.3 Oven
Temperature can be maintained at (65±2) °C.
4.4 Constant temperature and humidity chamber
Temperature ranges within 10 °C ~ 80 °C, with an accuracy ±2 °C; relative humidity
ranges within 10% ~ 95%, with an accuracy of ±5%.
5 Testing room environment
The testing room shall be fully ventilated, and the temperature shall be controlled at
(20±2) °C.
6 Evaluator
6.1 Selection of evaluators
6.1.1 The evaluators shall have no olfactory defects, no habits such as smoking, using
heavily scented cosmetics, or chewing gum, etc. that affect the olfactory evaluation
ability, and shall have relatively keen sense organs and identification abilities. Before
starting the evaluation, identification tests shall be conducted to select individuals with
better sensory sensitivity.
6.1.2 Prepare 4 samples of isoamyl acetate aqueous solution with the same volume and
6.2 Requirements of evaluators
6.2.1 The evaluation team shall consist of an odd number of 3 or more members.
6.2.2 On the day of the test, odor evaluators shall not carry or use odorous spices,
cosmetics or skin care products that may affect the olfactory evaluation ability, and shall
not eat foods with pungent odors. Odor evaluators who are suffering from colds or
olfactory organ discomfort shall not participate in the measurement on that day.
7 Test piece preparation
7.1 Plain wood-based panels
For plywood, particleboard, fiberboard, block board, glued-laminated timber and other
plain wood-based panels, an edge of (20±0.5) mm shall be removed, and then the test
piece shall be prepared from any part. The specification of the test piece is (25±0.5)
mm × (25 ±0.5) mm × panel thickness, and the total weight of the test piece is (200±10)
g.
7.2 Decorated wood-based panels
For decorated wood-based panels, an edge of (20±0.5) mm shall be removed, and then
the test piece shall be prepared from any part of the panel.
7.3 Wooden floors
For wooden floors, the test piece shall be prepared after removing the tongue and
groove. The specification of the test piece is (150±0.5) mm × (150±0.5) mm × floor
thickness, and the four sides are sealed with odorless aluminum foil. If the wooden floor
sample is not wide enough, it can be spliced. The number of test pieces is 10.
7.5 Wooden doors
Prepare test pieces from the four corners and edges of the wooden door. The
specification of the test piece is (150±0.5) mm × (150±0.5) mm × door thickness, the
sawn edges are sealed with odorless aluminum foil. It shall be ensured that at least 4
test pieces are taken from the four corners, and the remaining test pieces can be taken
from the edges (retaining the door edges). The number of test pieces is 8.
7.6 Wood-based panel products
Prepare a test piece from the edge-sealed corner of the wood-based panel product. The
specification of the test piece is (150±0.5) mm × (150±0.5) mm × panel thickness. If
the sample size is not enough, multiple samples can be sawed and cut to form one test
piece. Seal the sawn edges with odorless aluminum foil.
8 Test methods
8.1 Pretreatment of test pieces
Before the test, place the test pieces in an odorless environment with a temperature of
(20±2) °C and a relative humidity of (65±5) %, and adjust for 72 h ± 5 min.
8.2 Test steps
8.2.1 Plain wood-based panels
8.2.2 Decorated wood-based panels, wooden floors, wooden wall panels, wooden
doors and wood-based panel products
9 Odor grading
See Table 1 for odor grades and descriptions.
10 Test report
The test report shall cover the following content.
LY/T 3236-2020
LY
FORESTRY INDUSTRY STANDARD
ICS 79.080
CCS B 70
Grading and evaluation methods for odor of wood-based
panels and its products
Issued on. DECEMBER 29, 2020
Implemented on. JUNE 01, 2021
Issued by. National Forestry and Grassland Administration
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Terms and definitions... 4
4 Test apparatuses... 4
5 Testing room environment... 6
6 Evaluator... 6
7 Test piece preparation... 7
8 Test methods... 8
9 Odor grading... 9
10 Test report... 9
Foreword
This document was drafted in accordance with the rules provided in GB/T 1.1-2020
Directives for standardization - Part 1.Rules for the structure and drafting of
standardizing documents.
Please note that some of the contents of this document may involve patents. The issuing
organization of this document is not responsible for identifying these patents.
This document shall be under the jurisdiction of National Technical Committee 198 on
Wood-based Panels of Standardization Administration of China (SAC/TC 198).
Organizations responsible for drafting this document. Research Institute of Wood
Industry, Chinese Academy of Forestry, Suofeiya Home Collection Co., Ltd., Northeast
Forestry University, Guangdong Topstrong Living Innovation & Integration Co., Ltd.,
Dehua TB New Decoration Material Co., Ltd., Wanhua Chemical Group Co., Ltd., Dare
Wood-Based Panels Group Co., Ltd., Golden Home Living Co., Ltd., Zbom Home
Collection Co., Ltd., Guangdong Yaodonghua Furniture Boards Co., Ltd., Guangxi
Fenglin Wood Industry Group Co., Ltd, Guangxi Sunway Forest Products Industry Co.,
Ltd., Oppein Home Group Inc., Guangdong T&H New Material Co., Ltd., Jiusheng
Wood Co., Ltd., Zhejiang Shiyou Timber Co., Ltd., Guangxi Forestry Research Institute,
Hubei Academy of Forestry, Shanghai Research Institute of Building Sciences (Group)
Co., Ltd., Jiangsu Deluni Wood Industry Co., Ltd., Guangzhou Teehome Decorative
Material Co., Ltd., Jiangsu Joyful New Material Co., Ltd., Yixian Shenglin Board
Industry Co., Ltd., North American Maple Qing Mu (Jiangsu) Co., Ltd., Hunan Fuxiang
Wood Industry Co., Ltd., Dongguan Beihui Decorative Material Co., Ltd., Suzhou
Dawei Wood Industry Co., Ltd., DARE (Jiangsu) Flooring Co., Ltd., Baroque Timber
Industries (Zhongshan) Co., Ltd., Zhejiang Layo Wood Industry Co., Ltd., Guangxi
Guoxu Forestry Development Group Co., Ltd., Huizhou EISYA Wood Technology Co.,
Ltd., Chengdu Meikangsanshan Wood Industry Co., Ltd., Guangdong Weihua
Corporation, Suofeiya Home Furnishing Hubei Co., Ltd., Ruitong Polymer Tech
(Zhejiang) Co., Ltd.
Main drafters of this document. Lv Bin, Huang Anmin, Liu Ru, Li Xinbing, Fu Yuejin,
Zhang Yuping, Shen Jun, Li Botao, Chen Songwu, Zhang Zhongfeng, Zhang Shifeng,
Li Guangrong, Lei Hai, Liu Yuanqiang, Gong Cheng, Cheng Jie, Pan Xiaozhen, Wu
Fushe, Zeng Minhua, Wei Yunhe, Deng Kan, Wang Chen, Jia Dongyu, Gan Lili, Liu
Zhonghui, Dai Yanmei, Chao Jiu, Ni Yuezhong, Fan Na, Chen Xiangjun, Ge Ya, Xu
Haiyu, Yang Fan, Zhao Liyuan, Zou Xianwu, Chen Xianbao, Zhou Qin, Zeng Zhen, Li
Fudong, Xing Xinting, Yu Guangming, Zhang Bo, Kong Xiaoming, Jiang Wei, Ji Juan,
Lin Deying, Ge Xiaohai, Li Xiaobo, Chen Juan, Ye Changhai, Zhou Heng, Xiao
Xuebing, Chun Hua, Lin Qiulan, You Jia, Chen Qian, Tang Lina, Qin Ye, Wang Zhiping.
This document is issued for the first time.
Grading and evaluation methods for odor of wood-based
panels and its products
1 Scope
This document specifies the terms and definitions, test apparatuses, testing room
environment, evaluator, test piece preparation, test method, odor grading and inspection
report of grading and evaluation methods for odor of wood-based panels and its
products.
This document applies to wood-based panels and its products, including plain wood-
based panels, decorated wood-based panels, wooden floors, wooden wall panels,
wooden doors and wood-based panel products.
2 Normative references
The following documents are referred to in the text in such a way that some or all of
their content constitutes requirements of this document. For dated references, only the
dated version applies to this document; for undated references, the latest edition
(including all amendments) applies to this document.
GB/T 11414-2007, Laboratory glassware - Bottles
GB/T 15723-1995, Laboratory glassware - Desiccator
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
4 Test apparatuses
4.1 Wide-mouth glass bottle
It shall comply with the requirements of GB/T 11414-2007, with a volume of 2 500 mL,
a sealed lid that is easy to open and close, and no odor at the temperatures of (20±2) °C
and (65±2) °C. Figure 1 is a typical drawing of the dimensions of a wide-mouth glass
bottle.
4.3 Oven
Temperature can be maintained at (65±2) °C.
4.4 Constant temperature and humidity chamber
Temperature ranges within 10 °C ~ 80 °C, with an accuracy ±2 °C; relative humidity
ranges within 10% ~ 95%, with an accuracy of ±5%.
5 Testing room environment
The testing room shall be fully ventilated, and the temperature shall be controlled at
(20±2) °C.
6 Evaluator
6.1 Selection of evaluators
6.1.1 The evaluators shall have no olfactory defects, no habits such as smoking, using
heavily scented cosmetics, or chewing gum, etc. that affect the olfactory evaluation
ability, and shall have relatively keen sense organs and identification abilities. Before
starting the evaluation, identification tests shall be conducted to select individuals with
better sensory sensitivity.
6.1.2 Prepare 4 samples of isoamyl acetate aqueous solution with the same volume and
6.2 Requirements of evaluators
6.2.1 The evaluation team shall consist of an odd number of 3 or more members.
6.2.2 On the day of the test, odor evaluators shall not carry or use odorous spices,
cosmetics or skin care products that may affect the olfactory evaluation ability, and shall
not eat foods with pungent odors. Odor evaluators who are suffering from colds or
olfactory organ discomfort shall not participate in the measurement on that day.
7 Test piece preparation
7.1 Plain wood-based panels
For plywood, particleboard, fiberboard, block board, glued-laminated timber and other
plain wood-based panels, an edge of (20±0.5) mm shall be removed, and then the test
piece shall be prepared from any part. The specification of the test piece is (25±0.5)
mm × (25 ±0.5) mm × panel thickness, and the total weight of the test piece is (200±10)
g.
7.2 Decorated wood-based panels
For decorated wood-based panels, an edge of (20±0.5) mm shall be removed, and then
the test piece shall be prepared from any part of the panel.
7.3 Wooden floors
For wooden floors, the test piece shall be prepared after removing the tongue and
groove. The specification of the test piece is (150±0.5) mm × (150±0.5) mm × floor
thickness, and the four sides are sealed with odorless aluminum foil. If the wooden floor
sample is not wide enough, it can be spliced. The number of test pieces is 10.
7.5 Wooden doors
Prepare test pieces from the four corners and edges of the wooden door. The
specification of the test piece is (150±0.5) mm × (150±0.5) mm × door thickness, the
sawn edges are sealed with odorless aluminum foil. It shall be ensured that at least 4
test pieces are taken from the four corners, and the remaining test pieces can be taken
from the edges (retaining the door edges). The number of test pieces is 8.
7.6 Wood-based panel products
Prepare a test piece from the edge-sealed corner of the wood-based panel product. The
specification of the test piece is (150±0.5) mm × (150±0.5) mm × panel thickness. If
the sample size is not enough, multiple samples can be sawed and cut to form one test
piece. Seal the sawn edges with odorless aluminum foil.
8 Test methods
8.1 Pretreatment of test pieces
Before the test, place the test pieces in an odorless environment with a temperature of
(20±2) °C and a relative humidity of (65±5) %, and adjust for 72 h ± 5 min.
8.2 Test steps
8.2.1 Plain wood-based panels
8.2.2 Decorated wood-based panels, wooden floors, wooden wall panels, wooden
doors and wood-based panel products
9 Odor grading
See Table 1 for odor grades and descriptions.
10 Test report
The test report shall cover the following content.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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