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1、 STD-JIS R 3202-ENGL L77b Li733b08 053b437 30T UDC 666.16 JIS JAPANESE INDUSTRIAL STANDARD Float glass and polished plate glass Translated and Published bY Japanese Standards Association Printed in Japan 9s COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT
2、Japanese Standards Association Licensed by Information Handling Services STD*JIS R 3202-ENGL 199b M 4733b08 053b440 021 D In the event of any doubt arising, the original Standard in Japanese is to be final authority Errata for JIS (English edition) are printed in Standardization laumal, published mo
3、nthly by the Japanese Standards Association. Errata will be provided upon request, please contact: Business Department, Japanese Standards Association 4-1-24, Akasaka, Mnato-ku, Tokyo, JAPAN 107 TEL. 03-3583-8002 FAX. 03-3583-0462 Errata are also provided to subscribers of JIS (English edition) in M
4、onthly information. COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services STD.JIS R 3202-ENGL 199b = q733b08 053b114L Tb8 UDC 666.16 JAPANESE INDUSTRIAL STANDARD J I S Float glass and poli
5、shed plate glass R 3202-1996 1. Scope plate glass (1 used mainly for buildings and manufacturing mirror, etc. in Annexes. This Japanese Industrial Standard specifies the float glass (1 and polished Further, plate glass for manufacturing mirror (“) and frosted plate glass C ) are specified Notes () T
6、he transparent plate glass manufactured by floating method. (7 The transparent plate glass manufactured by polishing method. (7 The product selected so as to conform to the quality specified in the Annex, after cutting the float glass or polished plate glass to the dimensions used for mirror for the
7、 purpose of manufacturing mirror particularly. (4) The float glass the surface of which is frosted by sand-grinding, sand- blasting, etching, etc. Remarks: The following standards are cited in this Standard: JIS B 7502 Micrometer callipers JIS B 7512 Steel tape measures JIS B 7516 Metal rules JIS 2
8、8401 Rules for rounding off of numerical values 2. Classification The float glass and the polished plate glass shall be classfied as shown below according to thickness: (1) 2 mm (7 (2) 3 mm (3) 4 mm (4) 5 mm (5) 6 mm (6) 8 mm (7) 10 mm (8) 12 mm (9) 15 mm (10) 19 mm Note(5) 2 mm shall be only for fl
9、oat glass, 3. Quality in Table 1. The quality of float glass and polished plate glass shall be as shown COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services 2 R 3202-1996 Diameter of bubb
10、le 0.5 mm or more to 1.5 nun excl. Item of defects Diameter of bubble bubble bubble bubble 1.5 mm or more to 3.0 mm excl. Bubble Diameter of foreign material 0.5 nun or more to 1.0 mm excl. Foreign material Diameter of foreign Diameter of foreign Diameter of material material foreign material 1.0 mm
11、 or more to 2.0 mm or more to 3.0 mm or more 2.0 mm excl. 3.0 mm excL Concentration of pointshape defects Linear and zonal defects Area of one plate 1 m excl. Flaw Area of one plate 1 m or over to 4 m excl. Area of one plate 4 mz or over Perspective distortion Crazing Defect on cut side Table 1. Qua
12、lity of float glass and polished plate glass Quality Upper limit of permissible number of bubbles 5.5 x S I 1.1 x S I 0.44 x S I 0.22 x S I O Upper limit of permissible number of foreign materiais 2.2 x s I 0.44 x S I 0.22 x s I O As for bubbles of 1.5 mm or more in diameter and foreign materials of
13、 1.0 mm or more i n diameter, the distance between two bubbles, two foreign materials, or bubble and foreign material shall be 15 cm or more. There shall be no defect distinguished visually in the test in 5.1 (1). Upper limit of permissible length of flaw (mm) 60 I 60 x S I 240 Permissible upper lim
14、it of total sum of flaw lengths in one plate (mm) Less than i m z in area of one piate I 1 mz or more in area of one plate 240 I 240 x S The linear stripe pattern shali not be observed as distorted one in the test in 5.1 (3). There shall be no defect distinguished visually in the test i n 5.1 (1). D
15、efects in shape such as chipping of cut side, shelling, protrusion, slicing off, corners on/off, etc. shall be that the deviation from the cutting line when seeing perpendicularly to the surface of plate glass is not more than the nominal value of thickness of plate glass and not more than 10 mm. Re
16、marks 1. Of the point-shape defects, those with gas are bubbles and those without it are foreign materials. The values of diameter of bubble and foreign material shall be the largest external diameter. However, in the value of diameter, halo part is not included. 2. Linear and zonal defects are thos
17、e which exist in the inside or on the surface of the glass, such as line, non-uniformity of base, scratch, etc. 3. In the calculation formula in the Table, S is the area of the plate glass expressed with the unit of m2 and rounded off down to the second decimal place in accordance with the specifica
18、tion in JIS 2 8401. The permissible upper limit of the number of bubbles and foreign materials and the permissible upper limit of the length of flaw and COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information
19、 Handling Services STDeJIS R 3202-ENGL L77b W Li733608 053b4Li3 830 2 mm 3 mm 4 mm 5 mm 3 R 3202-1996 1.9 f 0.2 3.0 4.0 5.0 f 0.3 its total sum shall be the integer value obtained by discarding the decimal fraction of the value obtained by multiplying S by the coefficient. 4 . Shape and dimensions T
20、he shape and dimensions of the float glass and the polished plate glass shall be as shown below : 4.1 Shape The shape shall be square or rectangular plate. 4 . 2 Dimensions The dimensional value of length, width and thickness shall be expressed with the numerical value in mm unit. 4 . 3 Thickness an
21、d its tolerance The thickness shall be such that the value measured in accordance with 5.2 shall be within the range shown by thickness and its tolerance given in Table 2. Table 2. Thickness and its tolerance Unit : mm Tolerance Ciassification of I Thickness 1 thickness f 0.6 10 mm 10.0 19 mm I 19.0
22、 I f 1.2 4 . 4 Tolerance on length and width The dimensional value of length and width shall be such that the value measured in parallel at a position 50 mm or less distant from the side of plate in accordance with 5.3 shall be within the range of tolerance shown in Table 3. COPYRIGHT Japanese Stand
23、ards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services 4 R 3202-1996 Length and width of 3000 mm or less Table 3. Tolerance on length and width Unit : mm Length and width over 3000 mm up to and including 5000 mm C
24、lassification thickness 12 mm 15 mm f3 + 4 - 4 m m 19 mm f 5 + 6 5. Test method 5.1 Quality The tests on quality shown in 3. shall be made as follows : (1) Detection of bubble, foreign material, linear and zonal defects, flaw and crazing is made under the circumstance not affected by the light from
25、the outside by setting a group of fluorescent lamps (“1 horizontally in four parallel steps separating each other at an interval of 50 cm on the vertical wall with black mat surface coated as shown in Fig.1, illuminating the specimen glass put on the position 1 m apart from and parallel to the wall
26、from the back side, and observing visually the specimen from the front side. The distance between the specimen glass and the observer shall be approximately 50 cm in the case of bubble, foreign material and crazing, and some 4 m for linear and zonal defects and flaw. Note (9 The fluorescent lamp to
27、be used shall be 40 W cool white fluorescent lamp of 120 cm in length and, if the length exceeding 120 cm is required, plural lamps shall be installed touching end by end in tandem. COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Associ
28、ation Licensed by Information Handling Services STD-JIS R 3202-ENGL L99b I 4933b08 053b1145 b03 M A 5 R 3202-1996 Fig 1. Arrangement for detecting defects I - i l m - T Approx. 50 cm or * approx. 4 m (2) Size of diameter of bubble and foreign material is measured using a magnifying glass with minimu
29、m graduation of 0.1 mm or the metal rule with 0.5 mm minimum scale specified in JIS B 7516. Perspective distortion is examined by seeing through the specimen glass at the position approximately 4.5 m distant from it in the direction that the incident angle to it is as shown in Table 4, and observing
30、 the screen set up perpendicularly to the sight line approximately 4.5 m further ahead of the specimen over the total width of about middle part of the specimnen from the horizontal direction, as shown in Fig. 2. The specimen glass shall be kept with the drawn direc- tion?) at manufacture vertical a
31、nd, on the surface of the screen, the stripe pattern of white and black parallel straight lines of 25 mm width and inclined 45 degrees shall be provided, and its surface shall be lusterless. (3) Note 0 If the drawn direction at manufacture is not clear, the observation shall be made in two direction
32、s. COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services STD-JIS R 3202-ENGL L77b 4733b08 053bqqb 54T Classification according to thickness 2 mm 6 R 3202-1996 Incident angle (degree) 40 Fi
33、g 2. Arrangement for test on perspective distortion Plan Front view of screen (4) Specimen Screen I- Approx. 4 . 5 m Approx. 4 . 5 m I 3 mm I 45 For the size of concave and convex of defects on cut side, the dimension of deviation from the cut line when seeing perpendicularly to the surface of plate
34、 glass is measured. The position of cut line is obtained from the remained mark of cut line itself or from the cut line mark on other part with the help of interpolation or extrapolation Fig 3. (a) Chipping and protrusion 4 mm or more I 50 Chipping 4- 3 Cut line (see Fig 3). Defects on cut side (b)
35、Shelling A (CI Corners on/off r (d) Slicing off Cut line 79 COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services STD-JIS R 3202-ENGL L77b Y733b08 053b11117 48b 7 R 3202-1996 5.2 Thickness
36、 measurement Thickness specified in 4.3 shall be measured on the part 15 mm distant from periphery with the micrometer calipers specified in JIS B 7502 which is graduated to 0.01 mm or with a measuring instrument having an equivalent or superior in accuracy. The indicated value of thickness shall be
37、 the numerical value rounded off to the first decimal place in accordance with JIS 2 8401. 5.3 Length and width measurement Length and width specified in 4.4 shall be measured with the steel tape measure specified in JIS B 7512 with a minimum scale of 1 mm about the distance between two cut lines in
38、 parallel with the side. 6. Inspection In the inspection of the float glass and polished plate glass, the tests shall be made in accordance with 5. on the specimen taken by a resonable sampling plan, and the results shall meet the rquirements of 3. and 4. 7. Packaging The float glass and polished pl
39、ate glass shall be packaged by the use of suitable shock-absorbing material. 8. Marking The following items or their abbreviations shall be marked on each package of float glass and polished plate glass. (1) Name of product (2) Classification according to thickness (3) Nominal dimensions of length a
40、nd width (4) Manufacturers name COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services 8 R 3202-1996 Annex 1. Plate glass for manufacturing mirror 1. Scope This Annex specifies the plate gl
41、ass for manufacturing mirror. 2. Classification The plate glass for manufacturing mirror shall be classified according to thickness as shown below: (i) 2 mm (2) 3 mm (3) 5 mm (4) 6 mm 3. Quality The quality of the plate glass for manufacturing mirror, on each of the central part, peripheral part and
42、 edge part into which the surface of plate glass is divided as shown in Annex 1 Fig. 1, shall be as given in Annex 1 Table 1. Annex 1 Fig 1. Central part, peripheral part and edge part of plate glass for manufacturing mirror COPYRIGHT Japanese Standards Association Licensed by Information Handling S
43、ervices COPYRIGHT Japanese Standards Association Licensed by Information Handling Services STD-JIS R 3202-ENGL L77b I 4733b08 053b447 257 M Upper limit of permissible number of bubbles in 2 mm plate iameter of Diameter of Diameter of Diameter of ubble bubble bubble bubble .5 mm or more 1.0 mm or mor
44、e 1.5 mm or more 2.0 mm or more ) 1.0 mm excl. to 1.5 mm exd. to 2.0 mm excl 9 R 3202-1996 Upper limit of permissible number of bubbles in 3 mm, 5 mm, 6 mm plates Diameter of bubble Diameter of Diameter of Diameter of bubble bubble bubble 0.5 mm or mo to 1.0 mm e x d to 1.5 mm e x d to 2.0 mm exc? O
45、 mm Or more 1.0 mm or mo 1.5 mm or mo Annex 1 Table 1. Quality of plate glass for manufacturing mirror 1.3 x S 2.6 x S 2.6 x S 1 2.6 x S I 0.44 x S I O I t e m of defed 1.3 x s 0 . 4 4 x s O 2.6 x S 0 . 4 4 x s O irt of platt glass pper limit of permissible number of foreign materials in 2 mm late Q
46、uality Upper limit of permissible number of foreign materials in 3, 5, 6 mm plate Bubble 0.44 X S 1.3 X S 2.2 x s O O kntral O r t eripheral O r t Cdge part Foreign material liameter of foreign material .3 mm or more to 1.0 mm excl 1.0 mm or more Diameter of foreign material Diameter of fmign materi
47、al Diameter of foreign material 1 0 . 3 mm or more to 1.0 mm excl I 1.0 mm or more 2entral art ?eripheral art Nee part - - I O I I O Concentration of Mint shape defects Whole plate LS for bubbles of 0.5 mm or more in diameter and foreign materials of 0.3 mm or more in diameter within lhe central par
48、t and peripheral mi, lhe distance between two bubbles, two foreign materials or bubble and foreign material, shall be 15 cm or more. Linear and zonal defects n lhe test in 5.(1), there shall be no visually distinguishable defect in lhe central part and peripheral part of the plate. Whole plate Centr
49、al Part Flaw io flaw. Upper limit of permissible flaw length (mm) Peripheral part Edge part I 4 m 2 or more in area of one piate I i m2 or more to 4 m2 exci. in area of one date Less than 1 m2 in area of one plate 30 3 o x s 1 - 120 Slight flaw Central Dart here shall be no flaw exceeding 15 mm in length. Peripheral part Edge part In the lest in 5.W. the linear stripe pattern shall not be seen to be distorted Perspective distortion Crazing Whole plate Whole plate In the test in 5 there shall be no visually distinguishable defect Such defects as chipping on cut