Plastic Carry Bags are generally made out of polyethylene (polythene) which is used in contact with food stuffs, pharmaceuticals and drinking water and its use in these critical areas is approved by the regulatory authorities across the world including that in India like Bureau of Indian Standards (BIS) (请参阅BIS规范为10146:1982�在2003年2月重申)。Plastic Carry bags have contributed significantly in creating a sustainable, cost effective, energy efficient, hygienic and environmental friendly packaging system and for carrying, storing and packing various types of commodities/products including food products. The attributes, which have made the use of plastics safe and popular as a packaging material in general and as a carry bag in particular, are: •非毒性特征,惰性和耐化学性。 •Excellent barrier properties and water-proof characteristics. •由于不可损坏和重量轻而安全处理。 •透明度,可以轻松地携带/存储/包装内容的内容。 •Can also be opaque to protect the content from exposure to sunlight, when required. •对细菌和其他微生物生长的抗性。 •Pilfer proof characteristics etc. 由于这些特性,塑料携带的袋子可确保以最佳,卫生和经济方式将大众消费产物交付给消费者。在自然界中,它们不会构成任何健康危害。所有塑料中的所有塑料都符合BIS,FDA等国家和国际标准的要求 添加conv携带袋和辅助产品enience to day-to-day life. They are essential for packaging of bread, confectionery items, all range of Farsan/Namkeen and bakery products in view of its superior properties and cost effectiveness. All these products are very sensitive to moisture and loose taste and quality within no time. Hygroscopic edible products like sugar, salt, jaggery and many other food items susceptible to moisture cannot be effectively packed in alternative materials without sacrificing the quality or cost of packaging. Over years plastics packaging have played a major role in protecting and increasing the shelf life of these products. For carrying fish, meat, poultry and other wet food products, plastic bags are most suitable and no other alternative packaging can substitute them. |
• |
塑料袋的温室气体排放量要比未堆放的纸袋少60%,温室气体排放量要比堆肥纸袋少79%。塑料袋每1亿个袋子产生3,097吨二氧化碳当量,而未填充的纸袋产生了7,621吨,堆肥纸袋产生14、558吨,每1亿吨。 包装的生命周期清单,第1卷。1,Safel,1998年 |
• |
塑料杂货袋在生产过程中消耗的能量减少了40%,使用后的固体废物比纸袋减少了80%。(美国EPA) |
• |
Paper sacks generate 70% more air pollutants and 50 times more water pollutants than plastic bags do.US EPA. |
• |
比一公斤纸回收一公斤塑料所需的能量要少91%(US EPA) |
• |
运输150,000名。最小规定尺寸(20x30 cms)的塑料袋子为40微米厚度(重约600千克)将需要一个小节奏,而相似的尺寸和纸袋数量将需要超过10个这样的节奏来提供袋子。考虑需要的额外燃料和成本! |
|
纸张和聚乙烯之间的科学比较如下: |
|
环境负担 |
Polyethylene |
Paper |
生产的能源(GJ) |
29 |
67 |
Air pollution |
|
|
所以2 |
9.9 |
28.1 |
NOx |
6.8 |
10.8 |
CHx |
3.8 |
1.5 |
co |
1 |
6.4 |
Dust |
0.5 |
3.8 |
废水负担 |
|
|
鳕鱼 |
0.5 |
107.8 |
BOD |
0.02 |
43.1 |
(资料来源:Fabbri,A中的A Scott,G和Gilead,D。,编辑,可降解聚合物,原理和应用,Chapman&Hall,1995年,Chapt。) |
此外,纸张的生产取决于木浆的可用性,必须将树木砍伐,从而进一步引起环境问题。 塑料和黄麻袋 A comparison of Plastic Bags with Jute Bags in terms of Life Cycle Analysis reveals that |
• |
与黄麻袋相比,原材料制造,生产和运输过程中的节能为81%。 |
• |
Environmental Burden with respect to Air and Water pollution during Production of Raw Material and Bags for Plastic Bags and Jute bags are given below: |
|
|
Environmental Burden |
|
黄麻包 |
Plastic Bag |
空气排放 |
|
|
|
co |
公斤 |
54.3 |
0.6 |
二氧化碳 |
公斤 |
6610.2 |
760.0 |
所以x |
公斤 |
134.8 |
5.2 |
NOx |
公斤 |
68.1 |
4.8 |
CH4 |
公斤 |
39.5 |
3.2 |
HCl |
公斤 |
5.3 |
0.0 |
Dust |
公斤 |
67.6 |
1.4 |
Water Emission |
|
|
|
悬浮固体 |
公斤 |
352.3 |
0.2 |
Chlorides |
公斤 |
4535.5 |
0.1 |
|
|
The environmental burdens during transportation of the finished bags are as below: |
|
Emission |
gm/km |
黄麻袋的排放过多 |
Plastic Bags |
二氧化碳 |
781.0 |
11107.3 |
作为基础 |
co |
4.5 |
64.0 |
作为基础 |
HC |
1.1 |
15.6 |
作为基础 |
NOx |
8 |
113.8 |
作为基础 |
Particulates |
0.36 |
5.1 |
作为基础 |
Total regulated tail pipe emission |
13.96 |
198.5 |
作为基础 |
|
|
The values are for packaging of one lac MTs of Atta. Source: Centre for Polymer, Science and Engineering, IIT - Delhi |
|
Consider the enormous environmental burden generated by Jute bags, which are not visible to naked eyes though, in comparison to Plastic Bags! 塑料和纺织品袋 When plastics and textile are compared, following data is revealed: |
• |
Plastics manufacturing consumes 400 kwh/mt while composite textile mills consume 1310 kwh/mt. |
• |
纺织品贡献30%的Sox(任何部门第二高)和23%NOX(任何部门最高)(Source : Warmer Bulletin, July 01)Millions of KW of energy is saved and the atmosphere is less polluted when Plastic Carry bags are used in place of Textile bags. |
|
Biodegradable/Compostable Plastic Bags Biodegradation/Composting, by definition releases CO2 and CH4 - both Green House Gases, in to the atmosphere. Moreover, process takes place only when suitable environment is available. Use of biodegradable / composting plastics is thus restricted to specific applications worldwide. 什么是真正的问题? 我们的垃圾垃圾习惯不足,加上废物管理的基础设施不足,已经造成了固体废物的处理问题,包括城市地区的塑料废物。但是,可用的数据显示,印度主要城市的MSW含有约5%的塑料废物,平衡为纸张,可堆肥,沙子,淤泥,卫生尿布和建筑碎屑等。因此,不能将塑料袋视为唯一的理由。堵塞。 塑料袋的停用不是解决方案,宁愿将问题倍增。这将加剧普通人的困境,因为所谓的替代方案是不可行的,昂贵的,并且会给环境带来更大的负担。 为了阻止不合逻辑的使用,并鼓励废物拾取器收集和回收过程,监管机构已经指定了塑料携带袋的最小厚度和尺寸。 因此,我们面临的挑战是改善固体废物管理系统,并通过教育和提高意识来解决群众的乱抛习惯。该解决方案在于废物在来源和排列以回收所有可回收废物的排列。塑料袋是100%可回收的。 (来源:印度塑料中心环境中心(ICPE)) |
|
|
|