This part of GB/T 3903 specifies the test method for the peel strength of the upper, with the purpose of evaluating the suitability of the final product. This section applies to various uppers for footwear.
GB/T 3903.39-2008 history
2019GB/T 3903.39-2019 Footwear—Test methods for uppers—Delamination resistance
2008GB/T 3903.39-2008 Test method for uppers of footwear Interlaminar peel strength