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Reusable shopping bag

Reusable shopping bag is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Reusable shopping bag rather than just read about it. In short: A reusable shopping bag, sometimes called a bag for life in the UK, is a type of shopping bag which can be reused many times, in contrast to single-use paper or plastic shopping bags. It is often a tote bag made from fabric such as canvas, natural fibres such as jute, woven synthetic fibers, or a thick plastic that is more durable than disposable plastic bags, allowing multiple use.

Reusable shopping bag — main illustration
Reusable shopping bag — illustration

Key takeaways

  • Reusable shopping bag belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Reusable shopping bag to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Reusable shopping bag from memory before moving on to harder problems.

Reference excerpt

A reusable shopping bag, sometimes called a bag for life in the UK, is a type of shopping bag which can be reused many times, in contrast to single-use paper or plastic shopping bags. It is often a tote bag made from fabric such as canvas, natural fibres such as jute, woven synthetic fibers, or a thick plastic that is more durable than disposable plastic bags, allowing multiple use. Other shoppers may use a string bag or a wheeled trolley bag. They are often sold in supermarkets and apparel shops. Reusable bags require more energy to produce than common plastic shopping bags. One reusable bag requires the same amount of energy as an estimated 28 traditional plastic shopping bags or eight paper bags. A study commissioned by the United Kingdom Environment Agency in 2005 found that the average cotton bag is used only 51 times before being thrown away. In some cases, reusable bags need to be used over 100 times before they are better for the environment than single-use plastic bags.

History In 1990s, governments in some countries started to impose taxes on distribution of disposable plastic bags or to regulate the use of them. Some supermarkets have encouraged shoppers to stop using disposable plastic bags, by for example offering inexpensive reusable shopping bags or providing information on plastic bags' environmental damage.

United States First introduced in the US in 1977, plastic shopping bags for bagging groceries at stores flourished in the 1980s and 1990s, replacing paper bags. Many supermarkets encourage the use of reusable shopping bags to increase sales and profit margins. Most non woven bags cost $0.10–0.25 to produce but are sold for $0.99–$3.00. As stores receive diminishing returns due to saturated markets, there are concerns that prices will drop and they will become the new single-use bag. Some major supermarket chains have string or calico bags available for sale. They are sold with announcement of environmental issues in many cases. The ones sold in supermarkets often have designs related to nature, such as prints of trees or that of the earth, in order to emphasize environmental issues. One startup company out of Duluth, Minnesota, embroiders their bags with their local Aerial Lift Bridge on it. Some supermarkets have rewards programs for customers who bring their own shopping bags. When the customers collect a certain number of points, they can usually get discount coupons or gifts, which motivate customers to reduce plastic bag use. Some retailers such as Whole Foods Market and Target offer a cash discount for bringing in reusable bags. Since 1999, 6.25 billion reusable bags were imported into the United States for resale and give-aways under Harmonized Tariff Code (HTC) 4202923031 as reported by the United States International Trade Commission. Most U.S. grocery store customers do not bring their own bags, and many reusable bags go unused by customers, according to a 2008 article in the Wall Street Journal. In 2009, Walmart Stores proposed turning three California stores into reusable-bag-only stores. Concurrently, Walmart was prepared to introduce a $0.15 reusable bag. On 23 October 2009, Walmart abandoned plans to remove carrier bags and introduced the new lower-cost bags. In contrast to previous bags sold at $0.99 and $0.50, these lower cost bags may reduce price incentive to reuse these heavier-duty bags.

United Kingdom

Reusable shopping bags are offered in most British supermarkets. These are sold for a nominal sum, usually 10 pence, and are replaced for free. The bags are more durable than standard bags, meaning that they can be reused many times over. The main purpose of this is to ensure that packaging waste legislation was met and to encourage the bags to be recycled (which usually earns the retailer a small amount of money per bag), and unlike with 5p carrier bags there is a (small) financial incentive to bring the bags back for recycling, lessening the environmental impact. In contrast to most spartan carrier bags, bags for life tend to be colourful and sometimes show some aspect of the supermarket's advertising. Some supermarkets maintain the same design for years at a time, whereas some, like Waitrose, rotate the designs to tie in with either the season or the most recent advertising campaign. Waitrose was the first British supermarket to launch Bag For Life in association with British Polythene Industries. It was the brainchild of Gini Ekstein, from British Polythene industries. Gini Ekstein with Paul Oustedal and Nick Jones, of Waitrose, launched Bag For Life in 1998. It was the first closed-loop recycling initiative; returned and broken bags are made into black benches places outside Waitrose stores. The initial marketing messages designed by Ekstein and by Beth Chiles of Message Marketing are still in use today. Later on, Sainsbury's and other supermarkets introduced the bag for life. In 2015 the UK Government introduced a tax on all carrier bags, which meant that every consumer would pay 5p for any carrier bag from any "large retailer" store. The increasing use of jute and juco bags (a mix of cotton and jute) has provided a natural alternative to single-use plastic bags and reusable plastic bags. These are found in many of the major supermarkets, and over 50 million have been sold in the UK alone. These bags have a 3–4 year lifespan and so are often seen as the ecological option. Jute bags have become a crossover product from an alternative to plastics to a fashion/shopper accessory. Jute bags will last for about 4 years and if used correctly will replace over 600 single bags. At end of life, they can be used as planters for growing garden vegetables.

Ireland In Ireland, they were introduced in March 2002, when the Plastic Bag Environmental Levy was brought in to reduce the massive amount of disposable bags being used annually. Bags costing 70 euro cents or more are exempt from the levy.

Australia and New Zealand

… excerpt ends here. Continue reading the full article.

Illustrations

Reusable shopping bag: A blue reusable shopping bag
A blue reusable shopping bag
Reusable shopping bag: String bag with shopping items
String bag with shopping items
Reusable shopping bag: Wheeled shopping trolley bags
Wheeled shopping trolley bags
Reusable shopping bag: Typical example of a British reusable shopping bag
Typical example of a British reusable shopping bag
Reusable shopping bag: A non-woven polypropylene "green bag" from Australia
A non-woven polypropylene "green bag" from Australia

Worked examples

Example 1 — a first encounter with Reusable shopping bag

Start with the simplest possible case. Write down what Reusable shopping bag claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Reusable shopping bag before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Reusable shopping bag ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Reusable shopping bag

In research
Reusable shopping bag appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Reusable shopping bag in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Reusable shopping bag is common in secondary-school and first-year university syllabi. It links to neighbouring topics Environmental design, Recycling, Reuse, so understanding it makes those chapters shorter.
In everyday life
Look for Reusable shopping bag outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Reusable shopping bag in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Reusable shopping bag means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Reusable shopping bag out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Reusable shopping bag in simple terms?

A reusable shopping bag, sometimes called a bag for life in the UK, is a type of shopping bag which can be reused many times, in contrast to single-use paper or plastic shopping bags. It is often a tote bag made from fabric such as canvas, natural fibres such as jute, woven synthetic fibers, or a t…

Why does Reusable shopping bag matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Reusable shopping bag?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Reusable shopping bag.

Tags

  • Environmental design
  • Recycling
  • Reuse
  • Shopping bags

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