首页
登录
职称英语
In which year did the SPI introduce the recycling symbol? [br] [originaltext]L
In which year did the SPI introduce the recycling symbol? [br] [originaltext]L
游客
2025-02-14
37
管理
问题
In which year did the SPI introduce the recycling symbol? [br]
Lecturer: Today, we’re going to look at recycling programmes. The confusion over what we can and cannot recycle continues to confound consumers. Let’s look at plastics first, as they are especially troublesome, since different types of plastic require different processing to be reformulated and re-used as raw material. Some municipalities accept all types of plastic for recycling, while others only accept jugs, containers and bottles with certain numbers stamped on their bottoms.
The symbol code we’re familiar with—a single digit ranging from 1
to 7 and surrounded by a triangle of arrows—was
designed by The Society Q31
of the Plastics Industry, or SPI, in 1988
to allow consumers and recyclers
to differentiate types of plastics while providing a uniform coding system
for manufacturers. The numbers, which many countries now require to be
moulded or imprinted on all—or at least most—containers that can accept
the half-inch minimum-size symbol
, identify the type of plastic. The symbols Q32
also help recyclers do their jobs more effectively.
The easiest and most common plastics to recycle are made of polyethylene
terephthalate, or PETE, and are assigned the number 1. Examples include
soda and water bottles, medicine containers, and many other common consumer
product containers. Once it has been processed by a recycling facility, PETE
can become fibre-fill for winter coats, sleeping bags and life jackets. It can also
be used to make bean bags, rope, car bumpers, tennis ball felt,
combs
, cassette Q33
tapes, sails for boats, fumiture and, of course, other plastic bottles.
Number 2 is reserved for high-density polyethylene plastics. These
include heavier containers that hold laundry detergents and bleaches as well
as milk, shampoo and motor oil. Plastic labelled with the number 2 is often
recycled into
toys
, piping, plastic lumber and rope. Like plastic designated Q34
number 1, it is widely accepted at recycling centres.
Plastics that are less commonly recycled include polyvinyl chloride,
commonly used in
plastic pipes
, shower curtains, medical tubing, vinyl Q35
dashboards, and even some baby bottle nipples. These get the number 3. Like
number 4, which include wrapping films,
grocery and sandwich bags
, and Q37
other containers made of low-density polyethylene, and 5, which are poly-propylene
containers used in Tupperware, among other products,
few municipal Q36
recycling centres will accept it due to its very low rate of recyclability.
Another useful plastic to recycle is number 6, which is used in polystyrene,
or Styrofoam, items such as coffee cups,
disposable cutlery
, meat trays, Q39
packing "peanuts" and
insulation. It is widely accepted
because it can be reprocessed Q38/40
into many items, including cassette tapes and rigid foam insulation.
Last, but far from least, the hardest plastics to recycle are items crafted from various combinations of the aforementioned plastics or from unique plastic formulations not commonly used. Usually imprinted with a number 7 or nothing at all, these plastics are the most difficult to recycle and, as such, are seldom collected or recycled. More ambitious consumers should feel free to return such items to the product manufacturers to avoid contributing to the local waste stream, and instead put the burden on the makers to recycle or dispose of the items properly.
选项
答案
half-inch / half inch / half an inch
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3955964.html
相关试题推荐
WhoisMrsSuttonworriedabout?[br]【18】[originaltext]MRSSMITH:Hello,MrsS
WhoisMrsSuttonworriedabout?[br]【16】[originaltext]MRSSMITH:Hello,MrsS
WhoisMrsSuttonworriedabout?[br]【15】[originaltext]MRSSMITH:Hello,MrsS
WhoisMrsSuttonworriedabout?[br]【14】[originaltext]MRSSMITH:Hello,MrsS
【1】[br]【10】[originaltext]JANICE:Hello...Flagstone.JON:Ohhello;isthatF
【1】[br]【9】[originaltext]JANICE:Hello...Flagstone.JON:Ohhello;isthatFl
【1】[br]【7】[originaltext]JANICE:Hello...Flagstone.JON:Ohhello;isthatFl
【1】[br]【6】[originaltext]JANICE:Hello...Flagstone.JON:Ohhello;isthatFl
【1】[br]【2】[originaltext]JANICE:Hello...Flagstone.JON:Ohhello;isthatFl
Melissa’sfirsttipis______.[br][originaltext]Carlos:OK,everyone.Let’s
随机试题
EveryonewasinvitedtothepartyexceptJack,whichcausedmuch(suspect)_____
Thereareagreatmanybooks,websites,andtraining【C1】______todaymoreor
[originaltext]M:IseeyouandyourMendshavebeendecoratingthedormitory.W
下列因素中,能引起氧解离曲线右移的是A.CO分压降低 B.1.3-DPG降低
某工程现场φ25mmHRB400钢筋的焊接采用闪光对焊方式,检测结果见右表。请你
心脏病患者疑为甲状腺功能亢进时,不应该做的检查是A.TRH兴奋试验B.血清FT、
在市场促销中,人员促销要求房地产经纪人( )。A.通过媒体向消费者传递销售信息
关于气雾剂的概念叙述正确的是A.系指药物与适宜抛射剂装于具有特制阀门系统的耐压容
患者,女,60岁。因脑出血入院2周,目前患者意识不清,骶尾部皮肤发红,大小为3c
A.1、2、3 B.2、4、5 C.2、4、6 D.3、6、7
最新回复
(
0
)