This European Technical Specification defines terms, establishes a classification and specifies test methods for flat, factory made, non-structural, faced and unfaced sandwich boards for use in furniture manufacturing (SWB-F) for dry (service class 1) and humid conditions (service class 2). This European Technical Specification does not specify requirements.<\/p>\n
Guidance is provided for the selection of board properties which are relevant for specific board applications.<\/p>\n
This European Technical Specification is not applicable to products which are already covered by existing standards.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 3<\/td>\n | CEN\/TC 112 <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 4 Classification 4.1 General 4.2 Classification according to board lay-up 4.3 Classification according to surface appearance 4.4 Classification according to conditions of use 4.5 Classification according to application purposes <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 5 Symbols 5.1 General 5.2 Symbols related to conditions of use Table 1 \u2014 Symbols related to conditions of use 5.3 Symbols related to specific applications Table 2 \u2014 Symbols related to board application in furniture manufacturing 5.4 Combination of symbols for identification of sandwich boards 6 Conditioning and test conditions <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 7 Sampling, preparation and handling of test pieces and expression of test results 7.1 General requirements Table 3 \u2014 Minimum number of test pieces m which have to be tested to determine properties of sandwich boards <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 7.2 Testing of SWB-F in combination with auxiliary material(s) or after execution of additional processing steps 7.3 Test piece size 7.4 Determination of dimensions of test pieces <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 7.5 Expression of test results 8 Test methods 8.1 General guideline on the description and use of test methods 8.2 Physical properties 8.2.1 Determination of board dimensions 8.2.2 Moisture content <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 8.2.3 Apparent density and mass per unit area 8.2.4 Linear expansion due to changes in relative humidity 8.2.5 Behaviour under humidity variations in successive uniform climates 8.2.6 Moisture resistance 8.2.6.1 Principle <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 8.2.6.2 Conditioning 8.2.6.3 Calculation of the property retention index <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 8.3 Mechanical properties 8.3.1 Flexural properties 8.3.1.1 General 8.3.1.2 Bending test 8.3.1.3 Bending properties of sandwich board for shelving and similar applications <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Figure 1 \u2014 Test method for determination of bending properties of SWB-F for horizontal elements such as shelving Figure 2 \u2014 Locations of measuring points \u201cA\u201d and \u201cD\u201d for the test method for determination of bending properties of SWB-F for horizontal elements such as shelving <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 8.3.2 Surface soundness 8.3.3 Compressive properties perpendicular to the plane of the board 8.3.3.1 Flatwise compressive behaviour <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Figure 3 \u2014 Test method for determination of flatwise compressive behaviour of SWB-F 8.3.3.2 Resistance to a concentrated static point load <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Figure 4 \u2014 Test method for determination of resistance of SWB-F to a concentrated static point load 8.3.3.3 Resistance to a concentrated static load applied in close proximity to the board edge <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | Figure 5 \u2014 Test method for determination of resistance of SWB-F to a concentrated static point load 8.3.4 Impact resistance <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 8.3.5 Shear strength 8.3.5.1 General shear strength test method <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | Figure 6 \u2014 Loading configuration for determination of the shear strength of SWB-F according to EN 789 8.3.5.2 Simplified shear resistance test method 8.4 Properties relevant to processing and to performance in use 8.4.1 General <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 8.4.2 Integrity of board edges 8.4.2.1 General 8.4.2.2 Principle 8.4.2.3 Apparatus 8.4.2.4 Test piece 8.4.2.5 Procedure 8.4.2.6 Expression of test results 8.4.3 Quality of edge banding 8.4.3.1 General 8.4.3.2 Resistance of the board edge with edge-banding against a static concentrated load 8.4.3.2.1 Principle <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 8.4.3.2.2 Apparatus and loading device Figure 7 \u2014 Test method for determination of the resistance of the board edge with edge-banding against a static concentrated load F 8.4.3.2.3 Test pieces <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 8.4.3.2.4 Procedure 8.4.3.2.5 Expression of test results 8.4.3.3 Peel resistance of edge-banding 8.4.3.3.1 Principle 8.4.3.3.2 Apparatus <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 8.4.3.3.3 Peel test fixture 8.4.3.3.3.1 General Figure 8 \u2014 Peel test fixture <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | Figure 9 \u2014 Dual roller bearing assembly in the peel test fixture 8.4.3.3.3.2 Bonded test piece Figure 10 \u2014 Dimensions of a bonded test piece with the rigid adherend (top), the bond-line (middle) and the flexible adherend (bottom) <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | 8.4.3.3.3.3 Blank test piece without bonding 8.4.3.3.4 Procedure 8.4.3.3.5 Expression of test results 8.4.3.3.5.1 Measured peel resistance of each bonded test piece <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | Figure 11 \u2014 Example of the recordings for four test pieces of force [N] (depicted on the y-axis) versus crosshead movement [mm] (depicted on the x-axis) (the region of the autographic curves to be averaged for calculation of the peel resistance is hig… 8.4.3.3.5.2 Mean apparent peel resistance for test pieces without bonding 8.4.3.3.5.3 Corrected peel resistance 8.4.4 Load bearing capacity of fasteners 8.4.4.1 General <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | 8.4.4.2 Determination of axial withdrawal resistance of fasteners <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | Figure 12 \u2014 Test set-up according to Option 1 for determination of the load bearing capacity of fasteners in SWB-F with a thickness > 15 mm; downward holding forces act on the holding plate <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Figure 13 \u2014 Test set-up according to Option 2 a) (i.e. centre point insertion of the fastener) for determination of the load bearing capacity of fasteners in SWB-F 8.4.4.3 Pull through resistance of fasteners 8.4.4.4 Load bearing capacity of shelf supports 8.4.5 Shear resistance of a grooved board <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | 8.5 Formaldehyde emission 9 Marking 10 Test report <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | Annex A (normative) Test methods A.1 Shear resistance of grooved board A.1.1 Principle A.1.2 Apparatus and test set-up A.1.2.1 Compression testing machine A.1.2.2 Measurement of force A.1.2.3 Loading assembly <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | Figure A.1 \u2014 Unassembled test set-up for determining the shear resistance of a grooved board A.1.2.4 Test piece preparation <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | A.1.2.5 Procedure Figure A.2 \u2014 Assembled test set-up for determining the shear resistance of a grooved board prior to the start of test A.1.2.6 Calculation and expression of results <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | A.1.3 Simplified test method for determination of the shear strength of SWB-F A.1.3.1 Principle A.1.3.2 Apparatus and test set-up <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | Figure A.3 \u2014 Example for the set-up for a simplified, symmetrical shear strength test for test SWB-F with core material with negligible in-plane compressive strength A.1.3.3 Test piece preparation A.1.3.4 Procedure A.1.3.5 Expression of results <\/td>\n<\/tr>\n | ||||||
| 43<\/td>\n | A.1.4 Determination of the load bearing capacity of shelf supports A.1.4.1 Principle Figure A.4 \u2014 Testing procedure for determination of the load bearing capacity of shelf supports A.1.4.2 Apparatus and test set-up A.1.4.2.1 Compression testing machine A.1.4.2.2 Loading block, guiding device for the loading block and the test piece support assembly <\/td>\n<\/tr>\n | ||||||
| 44<\/td>\n | Figure A.5 \u2014 Unassembled test set-up for determination of the load bearing capacity of shelf supports A.1.4.3 Shelf support <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | Figure A.6 \u2014 Reference steel shelf support A.1.4.4 Test piece preparation A.1.4.5 Procedure <\/td>\n<\/tr>\n | ||||||
| 46<\/td>\n | Figure A.7 \u2014 Assembled test set-up for determination of the load bearing capacity of shelf supports A.1.4.6 Calculation and expression of results A.1.5 Pull through resistance A.1.5.1 Principle <\/td>\n<\/tr>\n | ||||||
| 47<\/td>\n | A.1.5.2 Apparatus and test set-up A.1.5.3 Test piece preparation <\/td>\n<\/tr>\n | ||||||
| 48<\/td>\n | Figure A.8 \u2014 Test configuration for determination of the embedment strength A.1.5.4 Procedure A.1.5.5 Expression of results <\/td>\n<\/tr>\n | ||||||
| 50<\/td>\n | Annex B (informative) Characterization of sandwich boards for different applications in furniture manufacturing Table B.1 \u2014 Essential (e), optional (o) and irrelevant (i) characteristics for SWB-F for different applications (general, vertical elements, horizontal elements, front elements) in dry conditions <\/td>\n<\/tr>\n | ||||||
| 51<\/td>\n | Table B.2 \u2014 Essential (e), optional (o) and irrelevant (i) characteristics for SWB-F for different applications (general, vertical elements, horizontal elements, front elements) in humid conditions <\/td>\n<\/tr>\n | ||||||
| 53<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Sandwich boards for furniture (SWB-F). Factory made products. Definition, classification and test methods for determination of performance characteristics<\/b><\/p>\n |