Download or read book GB T 1038 1 2022 Translated English of Chinese Standard GB T 1038 1 2022 GBT1038 1 2022 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2022-12-21 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document specifies two test methods for the gas transmission of plastic film and sheeting, as well as sandwich material under the condition of differential pressure---pressure sensor method and gas chromatography. This document is applicable to the determination of gas transmission of plastic film and sheeting. The determination of gas transmission of other materials may take this as a reference.

Download or read book GB T 1038 2 2022 Translated English of Chinese Standard GB T 1038 2 2022 GBT1038 2 2022 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2022-12-21 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document specifies two test methods for the gas transmission of plastic film and sheeting, co-extrusion material, plastic coating material and laminated board under the condition of equal pressure---coulomb sensor method and gas chromatography.