National Standard for Vinyl Flooring Rolls GB/T11982-2005
The national standard number of vinyl flooring rolls: GB/T 1 1982-2005 “Polyvinyl chloride flooring rolls” is divided into two parts: the first part is a vinyl flooring rolls with a base material, and the second part has a base The floor has back-coated vinyl coiled material. We are mainly talking about Part 1 of GB/T 11982. This part is non-equivalent to EN 651:1996 “Technical Requirements for Polyvinyl Chloride Flooring with Foam Layer for Resilient Flooring”. The main differences are as follows:
- EN651:1996 includes roll flooring and block floor, this part only applies to roll flooring;
- This part is different from the classification of products in EN 651:1996;
- This part has requirements for the appearance quality of roll flooring, but EN 651:1996 does not;
- Different wear resistance test methods are used;
- Added items with limit of hazardous substances.
- This part replaces GB/T 11982.1 -1989 ((vinyl flooring rolls Part 1 vinyl flooring rolls with Base Material”.
- Compared with GB/T 11982.1-1989, the main changes in this part are as follows:
- According to the place where the product is used, it is divided into household general-purpose, household durable, commercial general, and commercial durable according to the wear resistance;
- The classification of superior, first-class and qualified products has been cancelled;
- According to whether the product has a foam layer, use different thickness gauges to measure the thickness;
- Modified the test method of heating warpage;
- Modified the test method of peel strength;
- Modified the test method of wear resistance;
- Increased the requirements for the limit of hazardous substances.
This part of the standard was proposed by the China Building Materials Industry Association. Under the jurisdiction of the National Standardization Technical Committee for Lightweight and Decoration Building Materials (CSBTS/TC195).
Responsible drafting unit: Shanghai Academy of Building Research.
This part of GB/T 1 1982 specifies the terms and definitions, classification and marking, requirements, test methods, inspection rules, marking, packaging, transportation and Store. It is suitable for the roll flooring produced by the coating process on the sheet-like continuous substrate with the polyvinyl chloride resin as the main raw material and appropriate additives.
2 Normative references
The clauses in the document become clauses of this part after being quoted in this part of GB/T 11982. For dated reference documents, all subsequent amendments (excluding errata content) or revisions do not apply to this section. However, all parties who have reached an agreement based on this section are encouraged to study whether the latest versions of these documents can be used . For undated references, the latest version applies to this section.
- GB 2 50 -1995 Gray scale for assessing change in colour (idtI SO 105/A02:1993, T extiles-Testsf orc olourf astness-Part A02: Grey scale for assessing change in colour)
- GB 7 30-1998 Textile color fastness test light and weather fastness blue wool standard (eqvI SO 105-B:1994)
- GB /T 8 427-1998 Textile color fastness test Color fastness to artificial light: Atmospheric arc (eqvI SO 105-1302:1994)
- GB /T 18102-2000 Impregnated paper laminated wooden floor
- GB 1 858 6 Limits of harmful substances in vinyl floor of interior decoration materials
3 Terms and definitions
- Homogeneous vinyl flooring rolls
- Heterogeneous vinyl flooring rolls with base material, intermediate layer and surface wear-resistant layer
4 Classification and marking
4.1.1 Classified by the structure of the middle layer
- Foamed vinyl roll flooring with base material, codenamed FB;
- Dense vinyl roll flooring with base material, code-named CBo
4.1.2 Classification by wear resistance
- Universal type, codenamed G;
- Durable type, codenamed Ha
The marking sequence of the coil floor is: product name, structure classification, wear resistance level, total thickness, width and length, standard number.
Example: A general-purpose foamed roll flooring with a total thickness of 1.5mm, a width of 2000mm, and a length of 15m is expressed as: vinyl roll flooring FB-G1.5 X2000X15-GB/T 11982.1—20050
5. 1 Appearance
The appearance should meet the following regulations.
Cracks, breaks, and delamination on the surface are not allowed, slight wrinkles, bubbles, missing printing, lack of film, overprint deviation, color difference, and pollution are not obvious, and slight pattern deformation is allowed.
5.2 Size tolerance
The allowable size deviation shall be specified below.
The length and width are not less than the nominal length, the single value of thickness is plus or minus 0.20mm, the average value is plus or minus 0.18, minus 0.15mm.
5.3 Physical properties
The physical properties should meet the following regulations.
The nominal value of the mass per unit area is plus 13% minus 10%, the vertical and horizontal heating dimensional change is less than or equal to 0.40%, the heating warpage is less than or equal to 8mm, the color fastness is greater than or equal to level 3, and the average longitudinal and longitudinal peeling resistance is greater than or equal to 50N/50mm, A single value is greater than or equal to 40N/50mm, the residual recessed universal type is less than or equal to 0.35mm, the durable type is less than or equal to 0.20mm, the wear resistance universal type is greater than or equal to 1500 revolutions, and the durable type is greater than or equal to 5000 revolutions.
5.4 Limits of hazardous substances
The limit of hazardous substances shall comply with GB1 8586.
6 Test method
6. 1 Condition adjustment and test conditions
Before the test, the sample must be placed for at least 24 hours under the standard conditions of temperature 23℃±20C and relative humidity 50%±10i0 and carry out the test under these conditions.
Under diffuse sunlight or fluorescent light, the illuminance is 100l x ± 201 x, and the tested coil floor is laid flat, 100cm away from the sample, and the appearance is checked obliquely. Record the existence of various defects listed in Table 1.
Place the floor wear-resistant layer of the whole roll of rolled material upwards, and lay it flat on a hard surface without tensile stress. Use a steel tape with an graduation of 1 cm to measure the two sides parallel to the longitudinal direction at a distance of about 200 mm from both sides. Take the arithmetic mean of the two length measurements to indicate the length of the roll flooring, accurate to 0.05 m.
According to the method in 6.3, measure the width of the middle and both ends perpendicular to the longitudinal direction with a steel tape with a division value of lm m, and take the smallest width to indicate the width of the roll flooring, accurate to 5 mm.
6.5 Total thickness
The thickness gauge should meet the following requirements, and the graduation value is 0.01mm.
The diameter of the flat probe is 6.00 plus or minus 0.30mm, and the total mass of the foamed vinyl roll flooring with base material is 85 plus or minus 3g, and the dense vinyl roll flooring with base material is 28 plus or minus. 1g.
6.5.2 Test procedure
Take a test piece with a length of at least 100 mm and the width of the entire coil floor from both ends of the same coil floor or from the beginning of two coil floors. Measure the thickness of each test piece with a dial gauge thickness gauge. The measuring point should be at least 10 mm away from the edge of the test piece, and each test piece should measure at least 10 points. If there are uneven patterns, measure the thickness of the protruding parts. Record and calculate the deviation of each thickness measurement value and the arithmetic mean value of all measurement values from the nominal thickness value, accurate to 0.01 m md
6.6 Quality per unit area
Cut five specimens of 10mm x 10mm from the roll flooring, measure the size of each specimen to the nearest 0.01 mm, and then weigh the mass of each specimen to the nearest 0.01g. Calculate the deviation between the arithmetic mean of the mass per unit area of the five test pieces and the nominal mass value per unit area, expressed as a percentage, accurate to 1%.
6.7 Heating dimensional change rate
Before cutting the test piece, the floor of the coil should be laid as flat as possible and the direction should be marked.
Take three square test pieces with a side length of about 250mm at equal intervals on the coil floor. Any side of the test piece should be at least 100 mm away from the edge of the coil floor. The sides of each test piece should be parallel or perpendicular to the production direction.
6.7.2 Test procedure
As shown in Figure 1, draw two parallel lines with a distance of 200 mm along the longitudinal and transverse directions of the specimen at a distance of about 25 mm from the edge of the specimen, and mark four intersection points. Use a vernier caliper to measure the longitudinal and transverse lines respectively. The distance between the intersections is accurate to 0.02 mm. Then place the test piece with the wear-resistant layer upward, and place it flat on a polished glass plate or stainless steel plate sprinkled with talcum powder. The distance between the test pieces should be more than 50 mm, and put them in a constant temperature blast oven with a temperature of 80℃±2℃. Inside, the distance between the plate and the vertical wall of the oven should not be less than 50 mm, and the vertical distance between the plates and the oven should not be less than 100 mm. Take it out after keeping it for 6 hours and place it under standard conditions for 24 hours. Then measure the distance between the intersection of two straight lines in the longitudinal and transverse directions of GB/T 11982.1-2005 for each test piece to the nearest 0.02 mm. A piece of 180mmX 1 80mmX 1 should be used for measurement. A 3mm flat steel plate is pressed on the test piece.
6.7.3 Result calculation
The longitudinal or transverse heating dimensional change rate of the test piece is calculated according to formula (1). Calculate the arithmetic average of the longitudinal and transverse heating dimensional change rates, accurate to 0.01%. In the formula:
- EH — Dimensional change rate, %;
- Lo — the distance before heating, MM;
- L—distance after heating, mm.
- Unit is mm
6.8 Heating warpage
Same as 6.7.1.
6.8.2 Test procedure
Measure the average thickness of the roll flooring according to 6.5, and then place the wear-resistant layer of each test piece upwards, and place it flat on a polished glass plate or stainless steel plate sprinkled with talcum powder, with a distance of more than 50 mm between the test pieces, and put them together In a blast oven with a temperature of 80℃±2℃, the distance between the plate and the vertical wall of the oven should not be less than 50 mm, and the vertical distance between the plates and the oven should not be less than 100 mm. After keeping for 6 hours, take out the plate with the test piece. Do not move the test piece. Place it under standard conditions for 24 hours. Use a height vernier caliper to measure the maximum distance between the upper surface of each side of the test piece and the plate (usually at the corner) , Minus the average thickness of the roll flooring, use the arithmetic mean of 12 data of three test pieces to express the heating warpage, accurate to 1 mm.
6.9 Color fastness
According to GB/T 8427-1998, take three test pieces. Put the two test pieces together with the 6-level blue wool standard specified in GB 730-1998 into the test box to be exposed to nitrogen light, and the other test piece was kept in the shade. The temperature of the blackboard in the test box is 45°C±50°C, and the relative humidity is 50%±10%a. When the discoloration of the blue wool standard is exposed to level 6 and reaches the level 3 color difference of the gray sample card specified in GB 250-1995, the test is terminated. The gray sample card specified in GB 250-1995 is used to evaluate the color change grade of the test piece, and the poorer grade of the two test pieces is used to indicate the color fastness.
6. 10 Peel resistance
Take six specimens of at least 150mm in length and 1mm in width of 50mm on the coil floor at equal intervals. Take three specimens in the longitudinal and transverse directions. Either side of the specimen should be at least 100 mm from the edge of the coil floor.
6.10.2 Test procedure
Immerse the test piece upright in ethyl acetate, immerse it in a depth of not more than 40mm, 45min, then take out the test piece, and peel off the substrate immersed in the solvent by hand. Place the test piece in a blast oven at 60°C for 2 hours to fully evaporate the solvent. After adjusting the test for 24 hours under standard conditions, peel off at a tensile speed of 100 mm/min ± 5 mm/min, record the maximum load of the specimen being peeled off, and calculate the arithmetic average of the longitudinal and transverse specimens respectively, with accuracy to 0. 01 N/50 mm.
6. 11 Residual depression
The depression testing machine is equipped with a steel column indenter with a flat contact surface and a diameter of 11.3 mm. The edge is rounded with a radius of 0.1 5 mm and can apply a load of 500 N ± 0.5 N.
6. 11.2 Sampling
Take three test pieces with a size of 60m x 60m from the roll flooring.
6. 11.3 Test procedure
After the test piece is placed under standard conditions for 1 hour, use the thickness gauge specified in 6.5.1 to measure the thickness of the test piece and mark the measuring point. Place the wear-resistant layer of the test piece upward on the working platform of the dent testing machine, load 500 N ± 0.5 N uniformly on the marked measuring point, start timing within 2 seconds, hold for 150 minutes, then remove all loads, measure after 150 minutes The thickness of the marked measuring point is accurate to 0.01 mm.
6. 11.4 Result calculation
The residual depression is calculated according to formula (2) and expressed by the arithmetic mean of the test results of three specimens.
- D = t. One t ·· ,·················· one (2)
- In the formula:
- D— Residual depression, mm;
- to—The thickness of the test piece before loading, mm;
- t— Thickness after removing load 150m in, mmo
6.12 Abrasion resistance
According to GB/T 18102-2000 in 6.3.11, take two specimens for testing, and use the lower number of revolutions of the two specimens to indicate wear resistance.
6. 13 Hazardous substances limit R
According to GB 18586 regulations.
7 Inspection rules
7.1 Inspection classification
Inspection is divided into two types: factory inspection and type inspection.
7.1.1 Factory inspection
The factory inspection items are the mass per unit area, heating dimensional change rate, residual dent, and wear resistance in 5.1, 5.2 and 5.3. Among them, 5.1 and 5.2 are batch-by-batch inspections. 5.3 The mass per unit area, heating dimensional change rate, residual depression, and abrasion resistance shall be inspected according to the inspection batch. Four consecutive batches with the same formula, the same process and the same specifications are an inspection batch.
7.1.2 Type inspection
Type inspection items are all the inspection items listed in Chapter 5.
In one of the following cases, type inspection should be carried out.
- Trial type identification of new products or old products transferred to factories;GBJT 11982. 1-2005
- During normal production, once a year;
- After formal production, if there are major changes in materials and processes, which may affect product performance;
- When the product has been discontinued for more than half a year and production is resumed;
- When the factory inspection result is significantly different from the last type inspection;
- When the national quality supervision agency requests for type inspection.
7.2 Batching and sampling
The inspection is carried out in batches, with the same formula, the same technology, and the same specifications of the roll flooring as a batch. The quantity of each batch is 50,000 mZ, and the quantity is less than 5,000 m. It is also regarded as a batch, and the production volume is less than 5,000 ntz. The five-day output is counted as one batch.
Three volumes are randomly selected from each batch for inspection.
7.3 Judgment rules
7.3.1 Appearance and dimensions
When evaluating the appearance and size of the roll flooring, each coil shall meet the requirements of 5.1 and 5.2. If any item is unqualified, another six rolls of flooring shall be taken from the batch, and the unqualified items shall be re-inspected. If it is still unqualified, the batch of products shall be deemed unqualified.
7.3.2 Physical properties
The physical properties of the roll flooring shall be randomly selected from the roll flooring that is qualified according to 7.3.1 for inspection. If all the results meet the requirements of 5.3, the batch of products is judged to be qualified; if any item is unqualified, double samples are taken from the batch to re-inspect the unqualified items, if it is still unqualified, the batch is judged The product is unqualified.
7.3.3 Hazardous substances are restricted
If any one of the hazardous substance limits is unqualified, the batch of products shall be deemed unqualified.