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This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces JC/T 548-1994. In addition to a number of editorial changes, the following technical changes have been made with respect to JC/T 548-1994:
——the product classification is modified (see Clause 4; Clause 4 of Edition 1994);
——the product grade is canceled (see Clause 5; Clause 5 of Edition 1994);
——the technical requirements for pH value and drying time of wallpaper adhesive are modified (see Clause 5; Clause 5 of Edition 1994);
——the nonvolatile matter and 180° peeling strength of wallpaper adhesive are added, and the dry adhesion is deleted (see 5.1 hereof; Clause 5 of Edition 1994);
——the technical requirements for wallpaper primer are added (see 5.2 hereof);
——the limits of harmful substances in wallpaper adhesives are added (see 5.3 hereof);
——the standard paper-backing requirements for testing are modified (see 6.3.2 hereof; 6.1 of Edition 1994).
This standard was proposed by China Building Materials Federation.
This standard is under the jurisdiction of the National Technical Committee on Lightweight and Decorative Building Materials of Standardization Administration of China (SAC/TC 195).
The previous edition of this standard is as follows:
——JC/T 548-1994.
Wallpaper adhesive
1 Scope
This standard specifies the terms and definitions, classification and designation, technical requirements, test methods, inspection rules, marking, packaging and storage of adhesive for wallpaper (hereinafter referred to as wallpaper adhesive) and primer for wallpaper adhesive (hereinafter referred to as wallpaper primer).
This standard is applicable to water-based adhesives for indoor wallpaper bonding (referred to as wallpaper adhesive) and supporting wallpaper adhesive primer (referred to as wallpaper primer).
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 451.2 Paper and board—Determination of grammage
GB/T 1741 Test method for determining the resistance of paints film to mold
GB/T 2793 Test method for nonvolatile content of adhesives
GB/T 4851-2014 Measurement of static shear adhesion for adhesive types
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
GB/T 9271-2008 Paints and varnishes—Standard panels for testing
GB 11614 Flat glass
GB/T 14518 Determination of the pH of adhesives
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
JC/T 412.1-2006 Fiber cement flat sheets—Part 1: Non-asbestos fiber cement flat sheets
JG/T 210-2007 Primer for interior and exterior wall
QB/T 4034 Wallpaper
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
wallpaper primer
water-based material coated on the substrate to prevent excessive absorption of wallpaper adhesive due to the porosity of the substrate and adverse effects on wallpaper adhesive or wallpaper caused by extract at bottom layer
3.2
wet clay
initial adhesion of the adhesive to the adhered substrate when the adhesive layer is in a wet state
3.3
the paper web
one side of paper affixed to the paper machine's copper mesh (i.e. the reverse side), while the other side is the non-web side (i.e. the front side)
4 Classification and designation
4.1 Classification
4.1.1 Wallpaper adhesive products are classified into wallpaper adhesive and wallpaper primer.
4.1.2 Wallpaper adhesive, by its basic performance, consists of:
Common type (Type I)——generally used for common paper-backing wallpaper.
Enhanced type (Type II)——generally used for wallpaper with high wet adhesion and high strength requirements.
4.1.3 Wallpaper adhesive, by physical form, consists of:
Liquid adhesive (Y)——adhesive in liquid form at normal temperature.
Powdered adhesive (F)——adhesive in powder form at normal temperature.
Pasty adhesive (II)——adhesive in paste form at normal temperature.
4.2 Designation
Designation is made according to product name, basic performance, physical form and standard number.
For example: The common powdered wallpaper adhesive is designated as:
Wallpaper adhesive, Type I, F, JC/T 548-2016
5 Technical requirements
5.1 Wallpaper adhesive performance
It shall meet those specified in Table 1.
Table 1 Performance requirements of wallpaper adhesive
Item Technical index
Type I Type II
Appearance Uniform without caked mass after being stirred
pH 5~8
Nonvolatile matter a/% Pasty adhesive ≥16
Liquid adhesive ≥10
Pot life (7 d) Not decomposed, thinned and moldy
Drying time Easy to separate after 30 min
Wet clay /mm Moving distance is less than 5 when the peeling length is 200 mm Moving distance is less than 5 when the peeling length is 300mm
Slidability /N ≤8 ≤10
180° peeling strength /(N/25 mm) ≥5 ≥8
Freezing and thawing stability b/(N/25 mm) ≥5 ≥8
Anti-mould activity c/ level 0
a Only for liquid and pasty adhesives (when requested by the user).
b Only for liquid and pasty adhesives.
c Only for products with anti-mould capacity.
5.2 Wallpaper primer performance
It shall meet those specified in Table 2.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and designation
5 Technical requirements
6 Test methods
7 Inspection rules
8 Marking, packaging and storage
