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GB/T 32487-2016 (GB/T32487-2016)

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GB/T 32487-2016: PDF in English (GBT 32487-2016)

GB/T 32487-2016
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 97.140
Y 80
General technical requirements for plastic furniture
ISSUED ON: FEBRUARY 24, 2016
IMPLEMENTED ON: SEPTEMBER 01, 2016
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Terms and definitions ... 6 
4 Requirements ... 6 
5 Test methods ... 11 
6 Inspection rules ... 15 
7 Marks, instructions on use, packaging, transport, storage ... 18 
General technical requirements for plastic furniture
1 Scope
This Standard specifies terms and definitions, requirements, test methods,
inspection rules, marks, instructions on use, packaging, transport, storage for
plastic furniture.
This Standard is applicable to plastic furniture products.
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 250-2008, Textiles - Tests for colour fastness - Grey scale for assessing
change in colour
GB/T 1043.1, Plastics - Determination of charpy impact properties - Part 1:
Non - instrumented impact test
GB/T 1732, Determination of impact resistance of film
GB/T 2035, Terms and definitions for plastics
GB/T 2411, Plastics and ebonite - Determination of indentation hardness by
means of a durometer (shore hardness)
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 3326, Furniture - Main sizes of tables, chairs and stools
GB/T 3327, Furniture - Main sizes of storage units
GB/T 3328, Furniture - Main sizes of beds
GB 5296.6, Instructions for use of products of consumer interest - Part 6:
furniture
GB/T 6739-2006, Paints and varnishes - Determination of film hardness by
pencil test
GB/T 9286, Paints and varnishes - Cross cut test for films
GB/T 10357.1, Test of mechanical properties of furniture - Part 1: Strength
and durability of tables
GB/T 10357.2, Test of mechanical properties of furniture - Part 2: Stability of
chairs and stools
GB/T 10357.3, Test of mechanical properties of furniture - Part 3: Strength
and durability of chairs and stools
GB/T 10357.4, Test of mechanical properties of furniture - Part 4: Stability of
storage units
GB/T 10357.5, Test of mechanical properties of furniture - Part 5: Strength
and durability of storage units
GB/T 10357.6, Test of mechanical properties of furniture - Part 6: Strength
and durability of beds
GB/T 10357.7, Test of mechanical properties of furniture - Part 7: Stability of
tables
GB/T 10357.8, Test of mechanical properties of furniture - Part 8: Stability of
chairs with tilting or reclining mechanisms when fully reclined, and rocking
chairs
GB/T 16422.2, Plastics - Methods of exposure to laboratory light sources -
Part 2: Xenon-arc sources
GB/T 17657-1999, Test methods of evaluating the properties of wood-based
panels and surface decorated wood-based panels
GB 20286, Requirements and mark on burning behavior of fire retarding
products and subassemblies in public place
GB 28007-2011, General technical requirements for children furniture
GB/T 28202-2011, Furniture industry terminology
GB 28481, Limit of harmful substances of plastic furniture
QB/T 3826, Corrosion-resistant testing method of the metal deposits and
conversion coatings for the light industrial products - Neutral salt spraying
test (NSS)
Table 3 -- Appearance
S/N Inspection item Requirements Item classification Basic General
Appearance of plastic piece
No cracks, obvious deformation,
shrinkage, pinhole √
2 No depressions, flashes, wrinkles, sputum √
3 No bubbles, impurities, scars, white marks √
Surface shall be smooth and free
of scratches, burrs, galling, and
stains
5 No obvious color difference √
Furniture
hardware
appearance
Plating piece
Surface of coating shall be free
from rust, burrs and exposed
bottom
Surface of coating shall be
smooth and flat, and there shall
be no defects such as blistering,
yellowing, speckle, burnt, cracks,
scratches and bruises
Spraying piece
Coating shall be free from
leakage and rust √
Coating shall be smooth and
uniform, with consistent color,
and shall be free of defects such
as sag, crepe, wrinkle, and flying
paint
10
Metal alloy piece
No rust, oxide film peeling-off,
edge, sharp edge √
11
Surface is fine and there shall be
no defects such as cracks, burrs,
and black spots
12
Welded piece
Welding part shall be firm and
shall be free of de-soldering,
soldering, and welding
13
Uniform welds, no defects such
as burrs, sharp edges, splashes,
cracks
14 Other appearance
There shall be no burrs, cutting
edges and corners in parts that
touch human body or collect
objects
Use warpage measuring appliance of which precision is not less than 0.1mm.
Select a plate with the most serious warpage. Place appliance on diagonal of
the plate to measure. Take the maximum distance as measured value of
warpage.
5.3.2 Flatness
Use flatness measuring appliance of which precision is not less than 0.03mm.
Select three plates with the most serious unevenness. Measure distance from
reference line within a length of 0~150mm on surface. Take the maximum
distance as measured value of flatness.
5.3.3 Adjacent side perpendicularity
Use steel ruler or tape measure of which precision is not less than 1mm.
Measure lengths of two diagonals and opposite sides of a rectangular plate or
frame. Difference shall be measured value of adjacent side perpendicularity.
5.3.4 Dislocation
Use dislocation measuring appliance of which precision is not less than 0.1mm.
Select tested part with maximum distance between adjacent surfaces to
measure. Select any surface from this adjacent surface as measuring reference
surface. Place base surface of appliance on measuring reference surface.
Measuring surface of appliance measures another adjacent surface (along with
adjacent surface, measure one or more parts). When measured values are both
positive (or negative) values, take the maximum absolute value as measured
value of dislocation. When measured values are positive and negative, take
sum of maximum absolute values as measured value of dislocation and
maximum measured value as evaluated value of dislocation.
5.3.5 Splitting
Use feeler gauge to measure. Before measurement, it shall open and close
drawer or door three times to make drawer or door in closed position. Then
measure splitting value at 5mm inside splitting ends. Take the maximum value
as evaluated value of splitting.
5.3.6 Sag, swing degree
Use steel ruler or tape measure of which precision is not less than 1mm to
measure. Place steel ruler on horizontal and side surfaces adjacent to
measuring part of test piece. Extend test piece at 2/3 of total length. Measure
free sag of horizontal edge of drawer and left-right swinging value of drawer
side. Take maximum value as measured value of sag and swing degree.
5.3.7 Foot stability
Place test piece on a flat plate or on a flat ground. Use feeler gauge to measure
some foot or distance between bottom and flat plate.
5.4 Appearance
5.4.1 Discoloration, color fading
Test 3 positions respectively on product appearance or interior finish. Use a wet
skim white gauze with bare hands to apply a force to rub back and forth 3 times
at each place. Reciprocating distance of rubbing is 200mm~300mm. Observe
whether gauze has color on painted part.
5.4.2 Holes and gaps
In accordance with 7.5.3 in Gb 28007-2011.
5.4.3 Other appearance
It shall, under natural light or approximate natural light (e.g. 40W fluorescent
light) of which illumination is in a range of 300lx~600lx, within a line of sight of
700mm~1000mm, use visual inspection or steel ruler of which precision is
0.5mm to measure. When there is a dispute, three people shall jointly test and
use the same opinion of two or more people as test result.
5.5 Physical and chemical properties
5.5.1 Plastic piece
5.5.1.1 Heat-cold resistance cycle
In accordance with 4.31.1 in GB/T 17657-1999.
5.5.1.2 Hardness
In accordance with GB/T 2411.
5.5.2 Other pieces
5.5.2.1 Hardness
In accordance with GB/T 6739-2006.
5.5.2.2 Impact strength
In accordance with GB/T 1732.
5.5.2.3 Corrosion resistance
5.5.2.3.1 Preparation of test plate
Strength and durability of tables and tea tables shall be performed according to
provisions on level 3 in GB/T 10357.1. Strength and durability of chairs and
stools shall be performed according to provisions on level 3 in GB/T 10357.3.
Strength and durability of single-layer bed shall be performed according to
provisions of GB/T 10357.6. Strength and durability of cabinets and racks shall
be performed according to level 2 in GB/T 10357.5. Stability of tables and tea
tables shall be performed according to provisions of GB/T 10357.7. Stability of
chairs and stools shall be performed according to provisions of GB/T 10357.2
and GB/T 10357.8. Stability of cabinets and racks shall be performed according
to provisions of GB/T 10357.4.
5.7 Hazardous substance limit
In accordance with GB 28481.
5.8 Flame retardancy
Flame retardancy of plastic furniture used in public places shall be performed
in accordance with GB 20286. Flame retardancy of plastic furniture used in
other places shall be performed according to agreement between supplier and
purchaser.
5.9 Marks
Check whether product has marks. Check mark contents according to 7.1.
5.10 Instructions on use
Check whether product has instructions on use. Check contents of instructions
on use according to 7.2.
6 Inspection rules
6.1 Inspection classification
Inspection is classified into exit-factory inspection and type inspection.
6.2 Exit-factory inspection
6.2.1 Inspection items
Exit-factory inspection items include 4.2, 4.3, 4.4, 4.9 and 4.10.
6.2.2 Sampling and batching rules
Exit-factory inspection shall be subjected to full inspection. Since batch size is
large, if it is difficult to perform full inspection, it shall perform sampling
6.3.2 Type inspection timing
Type inspection shall be performed in one of the following situations:
a) during normal production, type inspection shall be performed regularly;
inspection period is usually one year;
b) when great changes happen on raw and auxiliary materials and production
process thereof;
c) production is resumed after discontinued production for a long time;
d) when trial model identification for new product or old product produced in
transferred plant;
e) when user requests type inspection and it is specified in order contract;
f) when quality supervision agency requires type inspection.
6.3.3 Sampling rules
Within an inspection period, randomly extract 2 samples from products that are
produced recently, one for inspection and the other for storage.
6.3.4 Type inspection procedures
Inspection procedures shall follow a principle of minimizing correctness of
remaining inspection items.
6.3.5 Determination of inspection results
6.3.5.1 Determination of single product
When all basic items are accepted, when rejected general items do not exceed
4, this product shall be determined as accepted otherwise it shall be rejected.
6.3.5.2 Determination of set products
Each product of this set of products shall be determined according to 6.3.5.1.
When each product is determined as accepted, this set of products shall be
accepted otherwise shall be rejected.
6.3.6 Re-inspection rules
If product is determined as rejected by type inspection, when there is objection
to test result, it shall re-inspect stored spare sample. Inspect rejected items and
un-inspected items due to test piece damage. Assess according to 6.3.5 and
indicate “re-inspection” in inspection results.
......
 
(Above excerpt was released on 2019-08-03, modified on 2021-06-07, translated/reviewed by: Wayne Zheng et al.)
Source: https://www.chinesestandard.net/PDF.aspx/GBT32487-2016