GB/T 6673-2001: Determination of length and width of plastics film and sheeting

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Scope

1.1 This standard covers test methods for measuring the "free" length of rolls of plastic
films and sheeting (see Chapter 2).
This method is applicable to film and sheet rolls with a length of less than 100 m and
serves as a reference method for verifying other measurement methods. Any other
length measurement method can be used as long as the measurement results are the
same as those of this method. If an automatic measuring device is used, the
measurements made for each plastic film and sheeting shall be verified according to the
steps specified in this method.
Since this method is relatively complicated, in the case of long rolls, when calibrating
the above-mentioned other measurement methods, it is allowed to use a plastic film or
sheeting about 100 m long measured by this method for calibration.
1.2 This standard also specifies the test method for measuring the average width of
plastic film and sheeting rolls, and the test method for measuring the width of plastic
film or sheeting specimens with a width of more than 5 mm (see Chapter 3). If the
specimen width is only slightly greater than 5 mm, the measurement accuracy of this
method is only 2%. This method specifies two procedures for measuring the width, and
which procedure shall be used depends on the width of the sample.
This method covers the test method for measuring the "free" width of rolls of plastic
films or sheeting.
This method is a reference method for verifying other measurement methods. Any other
width measurement method can be used as long as its measurement results are the same
as this method. If an automatic measuring device is used, the measurement of each
plastic film and sheeting shall be verified according to the steps specified in this method.

Basic Data

Standard ID	GB/T 6673-2001 (GB/T6673-2001)
Description (Translated English)	Determination of length and width of plastics film and sheeting
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G31
Classification of International Standard	83.140.10
Word Count Estimation	5,514
Date of Issue	2001-10-24
Date of Implementation	2002-05-01
Older Standard (superseded by this standard)	GB/T 6673-1986
Adopted Standard	ISO 4592-1992; IDT
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China
Summary	This standard specifies: measuring the natural roll of plastic film and sheet length Test methods. This standard applies to: length within 100m film and sheet membrane, as tested against other measurement methods the reference methods. Any other length measurement methods, as long as the measurement result is the same as the method can be used. If automatic measuring device, then shall the provisions of this method for each step performed by plastic film and sheet Measuring be tested. Since this method is more complicated, in long coils the case, faces at school these other measurement methods, permitted by the method of measuring too about 100m long plastic film or sheet to verify. This standard also provides a measure of plastic film and sheeting roll average width Test methods, well above 5mm width measurement plastic film or sheet sample width Test methods. If the sample is only slightly larger than the width of 5mm, accuracy of this method is only 2%. This method provides two measurement width step, steps should be adopted as the sample the width may be. This method provides for the measurement of plastic film or sheet roll natural width Test methods. The method is tested against other methods of measurement baseline methodologies, any other method of measuring wide, as long as the measurement results with the same method you can use this. If automatic measuring device, then shall the provisions of this method for each step performed by plastic film and sheet Measuring be tested.