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UV 7 Bar is a masterbatch containing UV Absorbers in a LLDPE carrier resin. Masterbatch absorbs the UV radiation and gives excellent optical properties.
% Anti-UV | 17.8 | – | 18.0 | MO211-700* |
Appearance | Slightly greenish pellets | ||||
Melt Index (190°C / 2,16 kg) | 10 | MO 1-700* | |||
Specific gravity g/cm3 | 1.15 | MO13-700* | |||
Bulk density | 0.63 | – | 0.66 | MO28-700* | |
Ash content | 25 | – | 27 | MO5-700* |
* POLYTECHS internal method
UV 7 bar can be easily processed on both blown and cast film extrusion lines.
For thin films (about 20 mm) tests may be performed. UV7 Bar is used in shrink-wrap films to prevent both discoloration and loss of properties of contents.
The table below represents recommended UV 7 Bar concentrations for different film thickness’ and the corresponding light stability (Kly) :
Quantity (%) | Film 50 mm | Film 100 mm | Film 200 mm |
1 | 30 kly | 80 kly | 130 kly |
2 | 50 kly | 150 kly | 200 kly |
4 | 100 kly | 200 kly | 300 kly |
6 | 150 kly | 320 kly | 500 kly |
Reminder:
Product is normally packed in 25 kg PE bags on 1375 kg shrink-wrapped pallets.
V 7 Bar是一种以LLDPE为载体的紫外线吸收剂母粒,起到吸收紫外线的作用,能赋予薄膜优异的光学性能。
物理特性
抗紫外线剂含量 |
17.8- 18.0% |
MO211-700* |
熔融指数(190℃/2.16KG) |
10 |
MO1-700* |
密度 g/cm3 |
1.15 |
MO13-700 |
堆积密度 |
0.63-0.66 |
MO28-700 |
灰份 |
25-27 |
MO5-700 |
外观 |
浅绿色颗粒 |
* 宝利得公司测试方法
用途
UV 7可非常容易地被用在吹膜和流延膜生产线中,对薄膜起到良好紫外线防护效果。
不推荐将其用于50μm以下太薄的薄膜中。
将UV 7用于外包装收缩膜中,既可起到防止薄膜变色的作用,又可防止被包装物品的变质。
推荐添加率
下表给出了不同薄膜厚度使用不同UV 7添加量时对应的日照稳定值。
添加量(%) |
50μm厚薄膜 |
100μm厚薄膜 |
200μm厚薄膜 |
1 |
30 kly |
80 kly |
130 kly |
2 |
50 kly |
150 kly |
200 kly |
4 |
100 kly |
200 kly |
300 kly |
6 |
150 kly |
320 kly |
500 kly |
140 kly = 1年在弗罗里达 190 kly = 1年在亚里桑那
包装
产品标准包装为每25kg一袋、共1375kg用收缩膜包装在托盘上。