QB/T 1952.1-2023Upholstered furniture - Sofa (English PDF)

Foreword

This document was drafted in accordance with the rules given in GB/T 1.1-2020

"Directives for standardization - Part 1.Rules for the structure and drafting of

standardizing documents".

This document supersedes QB/T 1952.1-2012 "Upholstered furniture -- Sofa".

Compared with QB/T 1952.1-2012, in addition to structural adjustments and editorial

changes, the main technical changes are as follows.

a) The definition of "serpentine spring" has been revised (see the Introduction to

Chapter 3, 8.8 of GB/T 28202-2020; Clause 3.4 of Edition 2012). Terms and

definitions including those defined in GB/T 28202-2020, as well as "leather",

"imitation leather", "artificial leather sofa", "leather sofa", "chair measuring

device", "angel of seat surface", " angel of back" and " recycled leather" have

been added (see the Introduction to Chapter 3, 3.1~3.4 and 3.9~3.12);

b) The classification of products by covering material has been revised (see 4.1; 4.1

of Edition 2012);

c) The requirements and corresponding test methods for angel of seat surface, angel

of back, and dimensional tolerances have been added (see 5.1 Table 1, 6.1.1.6,

and 6.1.1.7). The requirements for the front height of seat have been revised (see

Table 1 in 5.1; Table 1 in 5.1 of Edition 2012). The test methods for major

dimensions have been revised (see 6.1; 6.1 of Edition 2012);

d) The requirements for wooden components and wood moisture content have been

revised (see Table 3 in 5.2; Table 2 in 5.2 of Edition 2012). The requirements for

the roundness of metal components and their corresponding test methods have

been deleted (see Table 2 in 5.2 and 6.2.4 of Edition 2012). The requirements for

bonded regenerated foam plastics and their corresponding test methods have been

added (see Table 3 in 5.2 and 6.2.4);

e) The requirements for fabric appearance properties have been revised (see Table 4

in 5.3; Table 3 in 5.3 of Edition 2012);

f) The requirements and test methods for the corrosion resistance of surface coatings

on metal parts have been revised (see Table 5 in 5.4.1; Table 4 in 5.4.1 and 6.4.2

of Edition 2012);

g) The requirements and corresponding test methods have been added for the wash

fastness, dry-cleaning fastness, dimensional change during washing, dimensional

change during dry cleaning, pilling resistance, abrasion resistance, and pH of

textile fabrics (see Table 6 in 5.4.2, 6.4.2 and 6.4.3). The requirements and test

methods for leather wet rubbing fastness, artificial sweat rubbing fastness,

abrasion resistance, and pH have been added (see Table 6 in 5.4.2, 6.4.2, and

Upholstered furniture -- Sofa

1 Scope

This document specifies requirements regarding the main dimensions and tolerances,

external symmetry, materials, workmanship, appearance, physicochemical properties,

mechanical properties, and safety performance of sofas. It describes the corresponding

test methods. Furthermore, it sets forth provisions concerning inspection rules, marks,

instructions for use, packaging, transportation, and storage. Additionally, it provides a

product classification system designed to facilitate technical specifications.

This document applies to the production, classification, inspection, and sale of sofas

intended 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 1732, Determination of impact resistance of coating films

GB/T 3324-2017, General technical requirements for wooden furniture

GB/T 3920, Textiles -- Tests for colour fastness -- Colour fastness to rubbing

GB/T 3922, Textiles -- Testing method for colour fastness to perspiration

GB/T 4802.2-2008, Textiles -- Determination of fabric propensity to surface fuzzing

and to pilling -- Part 2.Modified Martindale method

GB/T 4893.4, Test of surface coating of furniture -- Part 4.Determination of

adhesion by cross-cut

GB/T 4893.7, Test of surface coatings of furniture -- Part 7.Determination of

surface resistance to alternation of heat and cold

GB/T 4893.8, Test of surface coatings of furniture -- Part 8.Determination of

resistance to abrasion

GB/T 4893.9, Test of surface coatings of furniture -- Part 9.Determination of

resistance to impact

GB/T 38733-2020, Office furniture -- Office chairs -- Methods for the determination

of dimensions

GB/T 39452, Leather -- Physical and mechanical tests -- Tests for adhesion of finish

GB/T 40904, Methods for the determination of prohibited substances in furniture

products and related materials -- Azo dyes

GB/T 40908, Methods for the determination of prohibited substances in furniture

products and related materials -- Flame retardants

QB/T 1646-2007, Polyurethane synthetic leather

QB/T 2385, Dark rare hardwood furniture

QB/T 2537, Leather -- Tests for colour fastness -- Colour fastness to cycles of to-

and-fro rubbing

QB/T 2724, Leather -- Chemical tests -- Determination of pH

QB/T 2726, Leather -- Physical and mechanical tests -- Determination of abrasion

resistance

QB/T 3826, Corrosion-resistant testing method of the metal deposits and conversion

coatings for the light industrial products -- Neutral salt spraying test (NSS)

QB/T 4462-2013, Upholstered furniture -- Manual operation folding sofa

IS016000-3.2011, Indoor air -- Part 3.Determination of formaldehyde and other

carbonyl compounds in indoor air and test chamber air- Active sampling method

3 Terms and definitions

For the purposes of this document, the terms and definitions defined in GB/T 28202-

2020 as well as the followings apply.

4 Product classification