新技術：隱形條形碼，能大大提高塑料回收效率

Today, when you recycle a Plastic container, it goes to a material recovery facility, where it must be identified and sorted.
現在回收塑料瓶時會送到材料回收設施那裏，必須要進行識別和分類。
Facilities typically rely on imprecise older technology to try to figure out materials in a particular piece of waste. Workers standing next to conveyor belts as packages whiz by can catch others.
回收設施通常依靠不精確的舊技術試着找出一塊廢料中的可回收材料。包裹在傳送帶上飛速而過，工人站在旁邊抓住。
But by embedding a microscopic change in a pattern of pixels—called an invisible bar code—on the label, software can instantly identify the package so it can be sorted and recycled correctly.
但通過對商標的像素模式進行輕微改動，也被稱爲隱形條碼，軟件就能立刻識別出這個包裹，準確進行分類回收。

Several of the world’s largest brands, including PepsiCo, Nestle, and P&G, have spent the last two years collaborating with Digimarc, the company that developed the technology.
在過去兩年，百事可樂、雀巢和寶潔等全球大品牌與開發這種技術的Digimarc公司進行了合作。
Working with recyclers, retailers, and recycling machine manufacturers to test the system, the project aims to target one of the reasons that many plastic packages end up in landfills.
該項目和回收公司、零售商以及回收設備製造商合作測試該系統，目的是要弄清楚爲什麼很多塑料包裝最終進入了垃圾填埋場。
“Obviously, there isn’t one silver bullet solution to the plastic issue,” says Sander Defruyt, who leads the New Plastics Economy initiative at the noNPRofit Ellen MacArthur Foundation, which initially brought the companies together when the project began.
非營利性組織艾倫·麥克阿瑟基金會“新塑料經濟”倡議的發起人Sander Defruyt說：“顯然解決塑料問題沒有萬全之策”，在項目開始之初就是艾倫·麥克阿瑟基金會把各公司召集到一起的。
“We need to start by eliminating the plastic we don’t need. We need a lot of innovation shifting from single-use to reuse business models. But recycling is still one part of the problem, and [brands] realize that to make recycling work, we need to improve the way plastic waste is sorted in sorting centers.”
“我們要從消除不需要的塑料開始，需要有創新的方式將商業模式從一次性轉變爲重複使用。但回收仍然是一個問題，‘各大品牌’意識到爲了更有效地回收，我們需要在分類中心改進塑料垃圾分類的方式。”
By sorting more accurately, the final bales of material are more valuable, and the total amount of material that can be recycled increases.
通過更準確地分類，回收過程最後獲得的材料會更有價值，能被回收的材料總數纔會增加。
The system can identify whether a bottle was used for food or something like shampoo—a crucial step that current systems can’t accomplish but is necessary for food companies that want to buy recycled plastic to reuse in new packaging, as European regulations prohibit them from using recycled plastic that was originally for something other than food.
該系統能識別一個瓶子是裝過食品還是裝過洗髮水一類的東西，這是目前系統無法完成的關鍵一步，對於想要購買再生塑料製成新包裝的食品公司來說也是很有必要的，因爲歐洲法規禁止他們使用原本用於食品以外的其他用途的再生塑料。