Document ID: chunk:federal_register_of_legislation:F2015C00542:reg:22:p7
Version: federal_register_of_legislation:F2015C00542
Segment Type: reg
Provision Reference: reg 22 (pt 7/10)
Character Range: 280115–283488

temperature

              3.5.1. Tests

               The test pieces shall be cut from finished parts. However, for practical reasons, the tests may be carried out on finished products or parts of them. These shall be selected so that all interlayers are tested proportionately to their use.

               The check shall be carried out on at least three samples per colour of interlayer taken from the daily production.

              3.5.2. Results

               All results shall be recorded.

              3.6. Light transmission

              3.6.1. Tests

               Representative samples of tinted finished products shall be subjected to this test.

               The check shall be carried out at least at the beginning of every production run if there is any change in the characteristics of the glazing affecting the results of the test.

               Windscreens and panes having a regular light transmittance measured during type approval of not less than 75 per cent, and glass glazing whose symbol is V (see paragraph 5.5.2. of this Regulation), shall be exempted from this test.

               Alternatively, for toughened-glass, a certificate of compliance with the above requirements may be submitted by the glass supplier.

              3.6.2. Results

               The value of regular light transmission shall be recorded. In addition, for windscreens with opaque obscuration, it shall be verified from the drawings referred to in paragraph 3.2.1.2.2.4. of this Regulation, that such bands are outside the test area B or zone I according to the category of vehicle for which the windscreen is intended. Any opaque obscuration shall be in conformity with the provisions contained in Annex 18.

              3.7. Optical distortion and separation of secondary image

              3.7.1. Tests

               Every windscreen shall be inspected for visual defects. In addition, using the methods specified in this Regulation or any method giving similar results, measurements shall be made in the various areas of vision at the following minimum frequencies:

               Either where Ps  200, one sample per shift,

               Or, where Ps > 200, two samples per shift,

               Or 1 per cent of the whole production, the test pieces chosen being representative of all production.

              3.7.2. Results

               All results shall be recorded.

              3.8. Test of resistance to abrasion

              3.8.1. Tests

               Plastics-surfaced, glass-plastics and plastic glazing only shall be submitted to this test. There shall be at least one check per month and per type of plastic material surfacing or plastic material.

              3.8.2. Results

               The measurement of the light scatter shall be recorded.

              3.9. Resistance-to-humidity test

              3.9.1. Tests

               Plastics-surfaced and glass-plastics glazing only shall be submitted to this test. There shall be at least one check per month and per type of plastic material surfacing or plastic material.

              3.9.2. Results

               All results shall be recorded.

              3.10. Test of resistance to chemicals

              3.10.1. Tests

               Plastics-surfaced, glass-plastics and plastic glazing only shall be submitted to this test. There shall