GB/T 19785-2005

📋 Scope / 适用范围 ai_extracted

This standard specifies the classification, requirements, packaging methods, and marking of stretch wrap packaging (hereinafter referred to as stretch packaging). This standard applies to the packaging of goods where individual items, loose parts, or assembled products are wrapped or secured onto a pallet using stretch wrapping to form a complete handling unit.

📚 References & Relations / 引用与关联

📖 Terms & Definitions / 术语和定义 ai_extracted

拉伸缠绕膜

以线性低密度聚乙烯为主要原料，在一定温度及拉伸比的条件下经过纵、横两个方向拉伸取向、定 型、冷却等处理所制得的薄膜，它具有优良的拉伸强度，伸长率、撕裂强度和抗刺穿强度是用于拉伸缠绕 包装的理想薄膜。

The film is produced using linear low-density polyethylene as the primary raw material, processed through orientation in both machine and transverse directions under specific temperature and draw ratio conditions, followed by setting and cooling treatments. It exhibits excellent tensile strength, elongation, tear strength, and puncture resistance, making it an ideal film for stretch wrapping applications.

阻尼拉伸

tension control 被包装物与薄膜之间利用阻尼方式产生的薄膜拉伸。拉伸数值一般增加60％左右为标准拉伸，调 节范围为40%-80%.

Tension Control The stretching of the film between the packaged item and the film is achieved through a damping method. The standard stretching value generally increases by approximately 60%, with an adjustment range of 40% to 80%.

预拉伸pre-stretch / pre-stretch

薄膜受到一个恒定的拉伸力后，再裹包货物的方式为预拉伸。拉伸数值一般增加200％左右为标 准拉伸，调节范围为100%-300%}

When a film is subjected to a constant tensile force and then wrapped around the cargo, the method is referred to as pre-stretching. The standard stretch typically corresponds to an increase of approximately 200% in the stretch value, with an adjustable range of 100% to 300%.

🔗 Related Standards / 同类标准