Method for measuring weigh of two-sided coated plate film

A measurement method and coating technology, which is applied in the field of measurement of the weight of the plate coating film used for aluminum can lids, can solve problems such as large measurement errors, and achieve accurate results, rapid measurement, and good data reproducibility

Inactive Publication Date: 2007-07-18
SOUTHWEST ALUMINUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problem that the measurement error of the coating film weight of the can end is relatively large by using a film weight meter, the purpose of the present invention is to provide a method for measuring the weight of the coating film with less error

Method used

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  • Method for measuring weigh of two-sided coated plate film
  • Method for measuring weigh of two-sided coated plate film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The influence of embodiment 1 different temperatures

[0042] The samples obtained by the aforementioned method to remove the single film and weighed with an analytical balance are divided into eight groups, two for each group, namely 1-1, 1-2, 2-1, 2-2, 3-1, 3 -2, 4-1, 4-2, 5-1, 5-2, 6-1, 6-2, 7-1, 7-2, 8-1, 8-2, each group is at a temperature of 20 ℃, 30°C, 40°C, 50°C, 60°C, 70°C, 80°C, 90°C concentrated sulfuric acid for 30 seconds each, and the results of film weight and corrosion were tested. The test results are shown in Table 1.

[0043] In the table, the theoretical film weight is to adopt organic solvent to replace the concentrated sulfuric acid to remove the organic film in the step (7), and other steps are identical with the process of measuring with the concentrated sulfuric acid.

[0044] The influence of table 1 temperature on measurement result

[0045] temperature

[0046] ℃

[0047] It can be seen from Table 1 that the temperatur...

Embodiment 2

[0048] Embodiment 2 The influence of concentrated sulfuric acid immersion time on test error.

[0049] The method is to divide 12 different samples into six groups, numbered 1-1, 1-2, 2-1, 2-2, 3-1, 3-2, 4-1, 4-2, 5-1, 5-2, 6-1, 6-2, the concentrated sulfuric acid in step (7) in the test method adopts a fixed temperature of 50°C, and changes the immersion time to 10 seconds, 20 seconds, 30 seconds, and 40 seconds respectively , 50 seconds, and 60 seconds to evaluate the influence of immersion time on the weight of the film and the corrosion of the substrate. In the table, the theoretical film weight is to adopt the organic solvent method to replace the concentrated sulfuric acid to remove the organic film in the step (7), and other steps are the same as the process of measuring with the concentrated sulfuric acid. The results are shown in Table 2

[0050] The influence of table 2 immersion time on measurement result

[0051] time

Second

sample

Numbe...

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Abstract

The invention discloses a double-sided coated plate film weight measuring method. It includes the following steps: using white cleaning cloth or sand paper to scrape off the sample single face film to expose the base material; using solvent permeated sand cloth to clean the film; dying the sample surface; clicking out the sample with certain area; using unmixed solvent to clean the two sides of the sample; drying; weighing on the analytical balance; dipping into inorganic solvent to remove another coating; taking out to wash and dry; using analytical balance to weight; dividing the different value of the two-time weighting by sample area to gain unit area coating film weight. This method is fast, exact, and has small error.

Description

technical field [0001] The invention relates to a method for measuring the weight of a coating film, in particular to a method for measuring the weight of a coating film of a plate used for aluminum pop can lids. Background technique [0002] Coating film weight is a test item for architectural coated aluminum sheets and can lid coated aluminum sheets. Currently, the film weight is measured by a film weight meter. However, compared with the architectural coated aluminum plate, since the organic coating film thickness of the can lid coated aluminum plate of the can is thinner, and it is a double-sided coated plate, and the film thickness on both sides is not the same, usually the outer cover is 3.0 μm ~ 6.0μm, the inside of the cover is 7.5 ~ 12.0μm, there is a large error in the measurement of the film weight by the film weight meter, which affects the production control and the user's production of the cover. [0003] Therefore, how to measure the film weight on both sides...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01G17/00G01G9/00
Inventor 蒲以明周仁良
Owner SOUTHWEST ALUMINUM GRP
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