Document ID: chunk:federal_register_of_legislation:F2023C00228:front:0:p33
Version: federal_register_of_legislation:F2023C00228
Segment Type: other
Provision Reference: 
Character Range: 89103–91932

+/- 15% relative humidity (RH).

       4. TEST PIECES

       Before the test, the sample roll of adhesive tape shall be conditioned for 24 hours in the specified atmosphere (See Para. 3 above).

       Five test pieces each 400 mm long shall be tested from each roll. These test pieces shall be taken from the roll after the first three turns were discarded.

       5. PROCEDURE

       The test shall be under the ambient conditions specified in Paragraph 3.

       Take the five test pieces while unrolling the tape radially at a speed of approximately 300 mm/s, then apply them within 15 seconds in the following manner:

       Apply the tape to the glass plate progressively with a slight length-wise rubbing movement of the finger, without excessive pressure, in such a manner as to leave no air bubble between the tape and the glass plate.

       Leave the assembly in the specified atmospheric conditions for 10 minutes.

       Unstick about 25 mm of the test piece from the plate in a plane perpendicular to the axis of the test piece.

       Fix the plate and fold back the free end of the tape at 90 degrees. Apply force in such a manner that the separation line between the tape and the plate is perpendicular to this force an perpendicular to the plate.

       Pull to unstick at a speed of 300 mm/s +/- 30 mm/s and record the force required.

       6. RESULTS

       The five values obtained shall be arranged in order and the median value taken as the result of the measurement.  This value shall be expressed in Newtons centimetre of width of the tape.

       Annex 8

       MINIMUM REQUIREMENTS FOR SAMPLING BY AN INSPECTOR

       1. GENERAL

       1.1. The conformity requirements shall be considered satisfied from a mechanical and a geometric standpoint, in accordance with the requirements of this Regulation, if any, if the differences do not exceed inevitable manufacturing deviations.

       1.2. With respect to photometric performance, the conformity of mass-produced headlamps shall not be contested if, when testing photometric performances of any headlamp chosen at random and equipped with a standard filament lamp;

       1.2.1. no measured value deviates unfavourably by more than 20% from the values prescribed in this Regulation.

       For values B 50 L (or R) and Zone III the maximum deviation may be respectively:

       B 50 L (or R):  0.2 litersx equivalent 20%

          0.3 litersx equivalent 30%

       Zone III:  0.3 litersx equivalent 20%

          0.45 litersx equivalent 30%

       1.2.2. or if

       1.2.2.1. for the passing beam, the values prescribed in this Regulation are met at HV (with a tolerance of 0.2 litersx) and related to that aiming at least one point of each area delimited on the measuring screen (at 25 m) by a circle 15 cm in radius around