Standard No.:	GB/T 2679.2-2015
English Name:	Sheet materials―Determination of water vapour trasmission rate―Gravimetric (Dish) method
Chinese Name:	薄页材料 透湿度的测定 重量（透湿杯）法
Chinese Classification:	Y30    Papermaking in general
Professional Classification:	GB    National Standard
Issued by:	AQSIQ;SAC
Issued on:	2015-09-11
Implemented on:	2016-4-1
Status:	valid
Superseding:	GB/T 2679.2-1995 Paper and board-Determination of water vapour transmission rate (Dish method)
Language:	English
File Format:	PDF
Word Count:	5500 words
Price(USD):	160.00
Delivery:	via email in 1~3 business day

本标准规定了重量(透湿杯)法测定薄页材料透湿度和折痕透湿度的方法。
本标准适用于平整的、能阻碍水蒸气透过的薄页包装材料,如纸、纸板、塑料薄膜、纸与薄膜或金属箔的复合材料、橡胶或塑料涂覆织物等。本方法不适用于在试验条件下由于接触热蜡而损坏或产生明显收缩的薄膜。对透湿度小于1g/(m2・24h)或厚度大于3mm 的材料,不建议使用此法。