GB/T 6673-2001 in English

《GB/T 6673-2001塑料薄膜和薄片长度和宽度的测定》由TC48（全国塑料制品标准化技术委员会）归口，主管部门为中国轻工业联合会。
本标准规定了测量塑料薄膜和薄片卷材自然长度的试验方法。本方法适用于长度100m以内的薄膜与薄片卷材，作为对其他测量方法进行检验的基准方法。任何其他测长方法，只要其测量结果与本方法相同则均可使用。如采用自动测量装置，则应按本方法规定的步骤对每种塑料薄膜及薄片所进行的测量加以检验。由于本方法较为繁复，在长卷材的情况下，在校脸上述其他测量方法时，允许使用按本方法测量过的约100m长的塑料薄膜或薄片来校验。本标准同时规定了测量塑料薄膜和薄片卷材的平均宽度的试验方法，以及测量宽度在5mm以上的塑料薄膜或薄片的试样宽度的试验方法。如果试样宽度只略大于5mm，本方法测量精度只有2%。本方法规定了两种测量宽度的步骤，采用何种步骤应视样品的宽度而定。本方法规定了测量塑料薄膜或薄片卷材的自然宽度的试验方法。本方法是对其他测量方法进行检验的基准方法，任何其他测宽方法，只要其测量结果与本方法相同则均可使用。如采用自动测量装置，则应按本方法规定的步骤对每种塑料薄膜及薄片所进行的测量加以检验

1.1 This standard specifies a method for the determination of the "free" length of a roll of plastics film or sheeting (see Chapter 2).
This method is intended for use with rolls of length up to 100 m as a reference method. All the other length measuring methods may be applied as long at its measuring result is same with that of this method. If automatic measuring device is adopted, measurements of various plastics film and sheeting according to the specified procedures of this method shall be examined.
Due to this method is complicated, for long roll when checking other aforementioned measuring methods, the plastics film or sheeting with its length measured of about 100maccording to this method is allowed to be adopted for checking.
1.2 Meanwhile, this standard specifies a method for the determination of the average "free" width of a roll and the width of a sample of plastics film or sheeting not less than 5 mm wide, also intended for use as a reference method (see Chapter 3). If the width is only slightly greater than 5 mm, the accuracy of the method is only 2%.This methods specifies two kinds of width measuring procedures, and the adoption of these two procedures shall be determined depending on the width of the specimen.
This method specifies the test methods for measuring the "free" length of the plastics film or sheeting roll.
This method is the reference method for examining the other measuring methods, and all the rest width measuring methods may be applied as long as their measuring results are equal to that of this method. If automatic measuring device is adopted, measurements of various plastic film and sheeting according to specified procedures of this method shall be examined.

Foreword I
ISO Foreword II
1 Scope
2 Reference Method for Length Measurement of Roll
3 Reference Method for the Width Measurement of Film or Sheeting