BS EN 14932:2018规定了尺寸、机械和氧气传输的要求 青贮饲料包用拉伸热塑性薄膜的速率和光学特性 饲料它规定了薄膜的太阳反射率分类。本欧洲标准还规定了检查这些要求的试验方法。它还规定了测定气密性和透氧性的试验方法 根据包裹的人造捆确定。本欧洲标准适用于基于聚烯烃材料的白色、黑色或彩色薄膜。信息技术 覆盖范围从250毫米到1000毫米。 符合本欧洲标准的拉伸膜的性能取决于使用情况 在至少六层薄膜中，以60%到70%的比例预拉伸圆捆，并 包装方形捆时分别为55%和65%。本欧洲标准还提供了卷筒储存指南和包装、储存说明 包装好的包和薄膜的处理。交叉引用:ISO 4593ISO 527-3ISO 9370ISO 6383-2EN ISO 7765-1ISO 4892-2:2006EN 2155-5腐蚀1:1994EN ISO 527-1EN ISO 4892-2:2006ISO 527-1:1993ISO 9845-1ISO 527-3:1995ISO 7765-1:1988ISO 15105- 2:2003ISO 6383-2:1983EN ISO 6383-2EN ISO 13468-2ISO 7765-1ISO 13468-2EN ISO 527-3ISO 9845-1:1992（R07）ISO 4592ISO 15105-2:2003（R07）Ed 1EN ISO 4892-2（ISO 4892-2:2013）ASSPCR063NF T 54-191:1994ISO 15270EN 15345EN ISO 4892-3EN 15343ISO 10640EN 16472EN 15344EN 15347ISO 4892-3ASTM D5458-95（2012）ISO/TR 19032:2013所有现行修订版均可在购买时购买包括在购买本文件时。

BS EN 14932:2018 specifies the requirements for dimensional, mechanical, oxygen transmission rate and optical characteristics of stretch thermoplastic films for wrapping bales used for ensilaging of forage. It specifies a classification for solar reflectance of the films.This European Standard specifies also test methods to check these requirements.It specifies also test methods for the determination of the airtightness and oxygen permeability determined on a wrapped artificial bale.This European Standard is applicable to white, black or coloured films based on polyolefin materials. It covers the width range from 250 mm up to 1 000 mm.The performances of the stretch films in conformance with this European Standard are based on the use of at least six layers of films, pre-stretched at a ratio between 60 % and 70 % for round bales and a ratio of 55 % and 65 % for wrapping square bales.This European Standard also gives guidance for storage of rolls and instructions for wrapping, storage of wrapped bales and for disposal of films.Cross References:ISO 4593ISO 527-3ISO 9370ISO 6383-2EN ISO 7765-1ISO 4892-2:2006EN 2155-5Corrigendum 1:1994EN ISO 527-1EN ISO 4892-2:2006ISO 527-1:1993ISO 9845-1ISO 527-3:1995ISO 7765-1:1988ISO 15105-2:2003ISO 6383-2:1983EN ISO 6383-2EN ISO 13468-2ISO 7765-1ISO 13468-2EN ISO 527-3ISO 9845-1:1992 (R07)ISO 4592ISO 15105-2:2003 (R07) Ed 1EN ISO 4892-2 (ISO 4892-2:2013) ASSPCR 063NF T 54-191:1994ISO 15270EN 15345EN ISO 4892-3EN 15343ISO 10640EN 16472EN 15344EN 15347ISO 4892-3ASTM D5458 - 95(2012)ISO/TR 19032:2006 Ed 1ISO 16378:2013 ED1All current amendments available at time of purchase are included with the purchase of this document.