Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights.
This standard was proposed by the China National Light Industry Council.
This standard is under the jurisdiction of the National Technical Committee on Paper Industry of Standardization Administration of China (SAC/TC 141).
Wallpaper
1 Scope
This standard specifies the types, requirements, test methods, inspection rules and marking, packaging, transportation and storage of wallpapers.
This standard is applicable to wallpaper of various substrates.
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 450 Paper and board—Sampling for testing and identification of machine and cross direction wire side and felt side
GB/T 451.1 Paper and board—Determination of size and deviation
GB/T 459 Paper and board—Determination of dimensional instability
GB/T 465.2 Paper and board—Determination of tensile strength after immersion in water
GB/T 2828.1 Sampling procedures for inspection by attributes—Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 4688 Determination of fibre constituent for paper and board and pulps
GB/T 7973 Paper, board and pulps—Measurement of diffuse reflectance factor (Diff/Geometry)
GB/T 7975 Paper and board—Determination of color (diffuse reflectance method)
GB/T 10739 Paper, board and pulps—Standard atmosphere for conditioning and testing
GB 18582-2008 Indoor decorating and refurbishing materials—Limit of harmful substances of interior architectural coatings
GB 18583-2008 Indoor decorating and refurbishing materials—Limit of harmful substances of adhesives
GB 18585 Indoor decorating and refurbishing materials—Limit of harmful substances of wallpapers
JC/T 548 Wallpaper adhesive
3 Product type
3.1 Wallpaper can be divided by material type into pure paper type, pure non-woven paper type, paper-backing type, non-woven paper-backing type and fabric backing type.
3.2 Wallpaper can be divided by function into common type and mildew-proof type.
4 Requirements
4.1 Dimensional deviation
Each roll of wallpaper shall be marked with length and width, whose allowable deviation shall not exceed ±1.5% of the nominal size.
4.2 Number of segments per roll and minimum segment length
The number of segments per roll and minimum segment length shall be in accordance with those specified in Table 1.
Table 1
Item Requirement
Number of segments per roll/segment ≤ 10 m/ roll 1
15 m/ roll 2
50 m/ roll 3
Minimum segment length /m ≥ 3
4.3 Appearance
The appearance quality of wallpaper shall be in accordance with those specified in Table 2.
Table 2
Item Requirement
Colour difference No obvious difference.
Scar and wrinkle Not allowed.
Bubble Not allowed.
Registering accuracy The deviation shall not be more than 1.5 mm
Bottom exposed Not allowed.
Missing print Not allowed.
Stain There should be no visually obvious stains.
4.4 Performance
The performance index of wallpaper shall be in accordance with those specified in Table 3 or as stipulated in the Contract.
?
Table 3
Item Unit Requirement
Fading resistance (ΔE) ≤ — 1.5
Color fastness to wet rubbing (ΔE) ≤ — 3.0
Masking a (ΔE) ≤ — 1.5
Anti-mould activity b ≤ Level 0
Dimensional instability
≤ Longitudinal % 0.4
Horizontal Pure paper wallpaper 1.8
Other wallpapers 1.5
Wet tensile strength
≥ Longitudinal kN/m 0.70
Horizontal 0.50
a The products that need to be affixed and finished are not checked for masking property.
b Only mildew-proof wallpaper is checked.
4.5 Harmful substances
The limit of harmful substances in wallpaper shall be in accordance with GB 18585.
4.6 Raw and auxiliary materials
4.6.1 The wallpaper products shall neither use toxic and harmful raw materials nor recycled ones.
4.6.2 The proportion of synthetic fiber content in the base paper of pure non-woven paper wallpaper and of non-woven paper-backing wallpaper shall be 15% or higher and 5% or higher respectively.
4.6.3 The anti-mould activity of adhesives used in wallpaper construction shall meet the requirements of JC/T 548, the harmful substances limit of adhesives shall meet the requirements of other adhesives in Table 2 of GB 18583-2009, and the harmful substances limit of wallpaper primer shall meet the requirements of water-based wall coatings in GB 18582-2008.
Foreword i
1 Scope
2 Normative references
3 Product type
4 Requirements
5 Test method
6 Inspection rules
7 Marking, packaging, transport and storage
Annex A (Normative) Determination of fading resistance
Annex B (Normative) Determination of color fastness to wet rubbing
Annex C (Normative) Determination of masking
Annex D (Normative) Determination of anti-mould activity
