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GB/T 18103-2013 English PDF (GBT18103-2013)

GB/T 18103-2013 English PDF (GBT18103-2013)

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GB/T 18103-2013: Engineered wood flooring

This Standard specifies the terms and definitions, classification, requirements, inspection methods, inspection rules, mark, package, transport and storage of engineered wood flooring.
GB/T 18103-2013
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 79.080
B 70
Replacing GB/T 18103-2000
Engineered wood flooring
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ISSUED ON. DECEMBER 31, 2013
IMPLEMENTED ON. JUNE 22, 2014
Issued by. General Administration of Quality Supervision, Inspection and Quarantine;
Standardization Administration Committee.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Classification ... 8
5 Requirements ... 8
6 Inspection methods ... 13
7 Inspection rules ... 21
8 Mark, package, transport and storage ... 24
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009. This Standard replaces GB/T 18103-2000 ?€?Engineered wood flooring?€?.
Compared with GB/T 18103-2000, the main technical changes are as follows. - Modify the definition of engineered wood flooring (3.1 of this edition; 3.1 of edition 2000);
- Modify the classification of engineered wood flooring; delete the
classification by formaldehyde emission (Clause 4 of this edition; Clause 4 of edition 2000);
- Modify the requirements for layer material of engineered wood flooring (5.2 of this edition; 5.2 of edition 2000);
- Modify the requirements for appearance qualify of engineered wood flooring and inspection methods (5.3 and 6.1 of this edition; 5.3 and 6.2 of edition 2000);
- Modify the size and size deviation of engineered wood flooring (5.4 of this edition; 5.4 of edition 2000);
- Modify the surface abrasion and formaldehyde emission indicators (5.5, 6.3.7 and 6.3.9 of this edition; 5.5.5, 5.5.7, 6.3.6 and 6.3.8 of edition 2000); - Add paint film hardness index and test methods (5.5 and 6.3.6 of this edition).
This Standard was proposed by State Forestry Administration.
This Standard shall be under the jurisdiction of National Technical Committee on Wood-based Panels Standardization of China (SAC/TC 198).
The drafting organizations of this Standard. Research Institute of Wood Industry, Chinese Academy of Forestry, Power Dekor Group, Kunshan Yingyi Nature
Wood Industry Co., Ltd., Baroque Timber Industries (Zhongshan) Co. Ltd., Guangdong Yihua Timber Industry Co., Ltd., Zhejiang Shiyou Timber Co., Ltd., Treesun Flooring Co., Ltd., Zhejiang Fudeli Timber Industry Co., Ltd., Zhejiang Shenghua Yunfeng Greeneo Co., Ltd., Anhui Yangzi Flooring Incorporated
Company, Zhejiang Biyork Wood Co., Ltd., Anxin Floor (Shanghai) Wood Co., Ltd., Der International Home Furnishing Co., Ltd., Guangdong Fu Lin Timber Technology Limited, Suzhou David Wood Industry Co., Ltd., Beijing Ruijia Ouya Timber Industry Co., Ltd., Arte Mundi (Shanghai) New Material Technology Co., Ltd., Zhejiang Yuhua Timber Co., Ltd., Jiangsu Kentier Wood Co., Ltd.,
Engineered wood flooring
1 Scope
This Standard specifies the terms and definitions, classification, requirements, inspection methods, inspection rules, mark, package, transport and storage of engineered wood flooring.
This Standard is applicable to the flooring that takes solid wood board or veneer (including recombinant decorative veneer) as panel; taking solid wood board, veneer or plywood as core layer or bottom layer; and is processed and
laminated by different combinations of layers. This Standard is applicable to engineered wood flooring that complies with general requirements for indoor use.
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 2828.1-2012 Sampling procedures for inspection by attributes - Part 1. Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 4823-1995 Defects in sawn timber
GB/T 4893.4-1985 Test of surface coatings of furniture - Part 4.
Determination of adhesion - Cross cut
GB/T 6739-2006 Paints and varnishes - Determination of film hardness by pencil test
GB/T 15036.2-2009 Solid wood flooring - Part 2. Examination methods
GB/T 17657-1999 Test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels
GB 18580 Indoor decorating and refurbishing materials - Limit of
formaldehyde emission of wood-based panels and finishing products
LY/T 1654-2006 Reconstituted decorative veneer
LY/T 1738 Plywood for solid wood composite flooring
3 Terms and definitions
The ones defined in GB/T 4823-1995 as well as the following terms and
definitions are applicable to this Standard. For ease of use, the following terms and definitions in GB/T 4823-1995 are repeatedly listed out.
3.1 Engineered wood flooring
The flooring that takes solid wood board or veneer (including recombinant decorative veneer) as panel; taking solid wood board, veneer or plywood as core layer or bottom layer; and is processed and laminated by different combinations of layers. The names of flooring species are determined by panel species (except the parquet of which the panel is made of different species). 3.2 Two-layer engineered wood flooring
Two-layer engineered wood flooring that takes solid wood board or veneer as panel, solid wood board or veneer as bottom layer.
3.3 Three-layer engineered wood flooring
Three-layer engineered wood flooring that takes solid wood board or veneer as panel, solid wood board as core layer, and veneer as bottom layer.
3.4 Multi-layer engineered wood flooring
The engineered wood flooring that takes solid wood board or veneer as panel, and plywood as base material.
3.5 Decay
Due to invasion of rot fungi, it gradually changes wood colour and cell structure to make wood cells subject to different degrees of damage, which results in significant change in wood physical and mechanical properties. Finally, it makes wood soft and friable; and appears sieve-like, fibrous, block split and powdered, etc.
Note. Rewrite the definition of 3.3 in GB/T 4823-1995.
3.6 Bore hole
The wood hole that is decayed by insects or marine boring animals.
[Definition of 3.4 in GB/T 4823-1995]
3.7 Fungus stain
Discoloration of wood due to erosion caused by fungus.
[Definition of 3.2.2 in GB/T 4823-1995]
3.8 Staining
Colour difference between part of surface colour and natural colour due to the influence of other substances.
3.9 Gap
Gap between adjacent wood blocks and veneers.
3.10 Cutted and chatter mark
Cutted and chatter mark of which the shape and the size are similar and regular left on the machined surface during cutting or sanding.
3.11 Exposed undercoat
There is no local paint film.
3.12 Blister
Bubbles of different sizes on the paint film surface.
3.13 Pin holes
Holes produced by shrinkage during drying process of paint film.
3.14 Wrinkling
Wrinkling on the surface made by paint film shrinkage.
3.15 Nib
Particulate debris adhered to paint film surface.
3.16 Abrasion resistance
Indicator of paint film?€?s abrasive resistance on the surface of engineered wood flooring that is represented by paint film?€?s abrasion loss after the grinding wheel of adherent abrasive cloth relatively rubs with paint film surface for certain numbers of revolutions.
3.17 Size of the surface layer
The length and width of surface layer of engineered wood flooring, excluding tongue.
4 Classification
4.1 Classified by panel material.
- The engineered wood flooring of which the panel is natural whole-sheet veneer;
- The engineered wood flooring of which the panel is natural splicing veneer (including parquet);
- The engineered wood flooring of which the panel is reconstituted decorative veneer;
- The engineered wood flooring of which the panel is coloured veneer.
4.2 Classified by structure.
- Two-layer engineered wood flooring;
- Three-layer engineered wood flooring;
- Multi-layer engineered wood flooring.
4.3 Classified by coating mode.
- Oil finishing engineered wood flooring;
- Paint finishing engineered wood flooring;
- Unfinished engineered wood flooring.
5 Requirements
5.1 Grading
According to the appearance quality, the products are divided into superior products, first-class products and qualified products.
5.2 Material requirements
5.2.1 Panel
5.2.1.1 Panel species. oak, walnut wood, cherry wood, ash tree, birch, maple, catalpa, teak wood, cylindrical Africa Melia and other common species. The panel of parquet allows to use different species.
5.5 Physiochemical properties
Physiochemical properties shall comply with the requirements in Table 3. Table 3 Requirements for physiochemical properties
Inspection item Unit Requirements
Impregnated peel -
The cumulative length of any of either side of a plastic layer
does not exceed 1/3 of the length of the layer. It shall be
defined as qualified when 5 out of 6 specimens are qualified.
Static bending strength MPa ??? 30
Modulus of elasticity MPa ??? 4000
Moisture content % 5 ~ 14
Adhesion of paint film -
Peeling paints are allo...

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