Maya Ellison
Plastic containers are now a ubiquitous part of daily life, from plastic cups and bottles to food containers and packaging. The story of how plastic containers became so popular is rooted in the post-war period when plastic began to replace more expensive materials such as paper, glass, and metal in throwaway items. The first fully synthetic plastic, Bakelite, was invented in 1907 by Leo Baekeland, but it was in the 1950s that plastic containers began to gain traction with the introduction of high-density polyethylene, which was cheaper and lighter than glass. Plastic containers became increasingly popular with manufacturers and customers due to their durability, low cost, and ease of transportation. However, the environmental consequences of plastic waste began to trouble observers in the 1960s and 1970s, leading to a shift in perceptions about plastic. Despite these concerns, plastic containers continue to be widely used across various sectors, including commercial, retail, household, tourism, and agriculture.
| Characteristics | Values |
|---|---|
| Plastic bottles were first used commercially | 1947 |
| Plastic bottles became popular | 1950s |
| Polyethylene Terephthalate (PETE) containers were introduced | 1970s |
| Plastic's reputation fell due to environmental concerns | 1970s and 1980s |
| Plastic bags became a target for activists | 1980s |
| Plastic was invented | 19th century |
| First fully synthetic plastic was invented | 1907 |
| Plastic tape was invented | 1930 |
| Bubble wrap was invented | 1957 |
| Plastic's environmental impact was first observed | 1960s |
| Plastic's use in food and beverage packaging | 1970s |
| Plastic's use in pharmaceutical packaging | 1974 |
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What You'll Learn
Plastic's popularity increased post-WW2
The use of plastic containers became popular in the post-WW2 era due to several factors. Firstly, plastic containers were lightweight, cheap, and easy to transport, making them attractive to both manufacturers and customers. They were also superior to glass bottles in terms of resistance to breakage during production and transportation. The development of high-density polyethylene in the early 1950s made plastic containers even more affordable and accessible.
Secondly, the post-war period saw a shift in consumer culture, with plastic replacing more expensive materials such as paper, glass, and metal in throwaway items. This shift towards single-use products contributed to the popularity of plastic containers. Plastic was also used in packaging films, milk containers, and bags for food and garbage, further increasing its prevalence in people's daily lives.
The invention of Bakelite in 1907 by Leo Baekeland played a significant role in the advancement of plastic use. As the first fully synthetic plastic, Bakelite could be shaped or moulded into almost anything, offering endless possibilities for manufacturers. This discovery led major chemical companies to invest in the research and development of new polymers, leading to the creation of new plastics.
The convenience and low cost of plastics were the main drivers of their increasing use. Plastic packaging could keep food fresh for longer, prevent food waste, and provide consumers with a greater variety of food options. It also allowed for easy transportation and distribution of goods. These advantages contributed to the widespread adoption of plastics in various industries, including food and beverage, pharmaceutical, and retail.
However, it is important to note that the popularity of plastic containers also had negative consequences. The environmental impact of plastic waste became a growing concern in the 1960s, with plastic debris observed in the oceans and awareness of environmental issues spreading. Despite these concerns, the use of plastic containers continued to grow, and they remain ubiquitous in modern society.
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Plastic's environmental impact
Plastic containers became popular due to their convenience, durability, lightweight nature, and low cost. However, their widespread adoption has had significant environmental impacts.
Firstly, plastic pollution has become pervasive in natural and built environments, including oceans, rivers, agricultural soils, and the air. Plastic debris in the oceans was first observed in the 1960s, and today, plastic pollution is ubiquitous, with microplastics and nanoplastics found in every ecosystem on Earth. The persistence of plastic in the environment is a major concern, as it can take between 100 to 1,000 years or more for plastic to decompose, depending on environmental conditions.
Secondly, plastic pollution poses a threat to marine life and human health. Over 1,500 species in marine and terrestrial environments are known to ingest plastics, and research has found microplastics and nanoplastics in all sources of water, types of food, placentas of pregnant people, and human stool. The ingestion of microplastics can lead to chronic inflammation, cardiovascular diseases, diabetes, neurodegenerative diseases, cancer, and even stroke.
Thirdly, plastic production contributes to climate change and air emissions. In the EU, annual emissions related to plastic production amount to around 13.4 million tonnes of CO2, or about 20% of the chemicals industry's emissions. Additionally, the infrastructure and transportation of raw materials for plastic production can release hundreds of toxins, causing various health issues, including damage to sensory organs, effects on respiratory, nervous, and gastrointestinal systems, and increased likelihood of cancer.
Finally, the recycling of plastics is not a perfect solution to plastic waste. Only a small fraction of plastic waste (about 9%) is economically or technically viable to recycle, and most plastics still end up in landfills or the environment. While some countries and regions have implemented measures to reduce plastic waste and pollution, such as bag bans and circular economy strategies, the global consumption of plastic continues to accelerate, with over half of the plastic ever manufactured produced since 2000.
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Plastic's low cost and convenience
Plastic containers are made exclusively or partially of plastic. They include single-use or reusable plastic cups, bottles, bags, food containers, tubes, cosmetic containers, and many more. The entire packaging industry heavily relies on plastic containers or containers with some plastic content. Food storage nowadays relies mainly on plastic food storage containers.
The low cost and convenience of plastics are the main reasons for their continuously increasing use. Plastic packaging can keep food fresh for longer, prevent food waste, and provide consumers with a greater variety of food. Plastic has replaced traditional materials like wood, paperboard, and metal for the manufacture of containers because of its price, moldability/formability, durability, and lightweight.
The use of plastic containers became popular in the post-war period when plastic began to replace the more expensive paper, glass, and metal materials used in throwaway items, such as consumer packaging. Plastic containers are lightweight, safe, virtually unbreakable, and easy to transport. Plastic bottles were first used commercially in 1947, but remained relatively expensive until the early 1950s, when high-density polyethylene was introduced. They quickly became popular with manufacturers and customers because, compared to glass bottles, they are lighter, cheaper, and easier to transport.
The invention of plastic was considered monumental because, until then, humans relied on natural resources to make everything. However, there is a limit to the supply of natural resources. As society grew and consumerism increased, shortages arose. The creation of new materials helped free people from the social and economic constraints imposed by the scarcity of natural resources.
The widespread adoption of plastics has not been without consequences to our health and the environment. Plastic pollutes our landscapes, oceans, air, and bodies. It has even entered the fossil record. Plastic waste has become a significant concern, with plastic lasting forever in the environment.
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Plastic's versatility and mouldability
Plastic is a term used to describe materials that can be formed and moulded under heat and pressure. The word "plastic" itself originally meant "pliable and easily shaped". The versatility and mouldability of plastic have allowed it to pervade all aspects of society. Humans have used plastic to make pillows, toothbrushes, keyboards, containers, and many other products.
The first fully synthetic plastic, Bakelite, was invented in 1907 by Leo Baekeland. Bakelite was durable, heat-resistant, and could be shaped or moulded into almost anything. This made it ideal for mass production and led to the creation of new plastics.
The mouldability of plastic refers to how well a mould will conform to being injected with molten plastic. The design of the mould is critical to the success of the moulding process, as it must allow for consistent material flow and cooling. Smooth, continuous curves and uniform wall thickness are ideal for mouldability.
The choice of plastic material is also important, as it affects the moulding process and the performance of the final product. Factors such as mechanical properties, thermal stability, chemical resistance, and durability depend on the chosen material.
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Plastic's recyclability
Plastic containers have become increasingly popular due to their convenience, low cost, and ability to keep food fresh for longer. However, this widespread adoption of plastics has led to significant environmental and health concerns, with plastic polluting landscapes, oceans, air, and even human bodies. The key to addressing these issues lies in improving plastic recyclability.
In principle, almost all plastic can be recycled. However, various barriers exist in practice. For instance, items often contain multiple types of plastic and different layers, making separation challenging and costly. Additionally, plastic can be contaminated by food and other substances, rendering the resins unsuitable for reuse. Small quantities of plastics may not be economical for recycling due to low efficiencies and high operational costs of recycling facilities.
The most widely recycled plastic globally is PET (polyethylene terephthalate), commonly found in plastic bottles. PET can be recycled into various products, including fashion items like polar fleece clothes, backpacks, and carpets. This process involves transforming PET into flakes that can be spun into yarn. Other commonly recycled plastics include HDPE (high-density polyethylene), found in milk and shampoo bottles, and LDPE (low-density polyethylene), used for plastic carrier bags.
Mechanical recycling is the most prevalent method of plastic recycling. It involves collecting, cleaning, sorting, shredding, and melting plastic waste into pellets for resale to producers of recycled plastic products. However, different types of plastic don't always mix well when melted, and recycled plastic often has lower quality than primary plastic due to unpredictable additive combinations and shortened polymer chains.
To enhance plastic recyclability and promote a circular economy, several actions are necessary. These include scaling up established recycling technologies, developing methods to handle hard-to-recycle plastics, leveraging insights from nature, and reducing the production of single-use plastics. By overcoming the challenges associated with plastic recycling, we can improve waste management, conserve natural resources, and mitigate environmental degradation caused by plastic pollution.
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Frequently asked questions
Plastic containers became popular in the 1950s when high-density polyethylene was introduced, making plastic containers cheaper than their alternatives.
Before plastic, containers were made from natural materials such as gourds, shells, leaves, hollowed logs, woven grasses, and animal organs.
Plastic containers became popular because they are convenient, lightweight, durable, and cheap to produce.
There are many types of plastic containers, including plastic cups, bottles, bags, food containers, tubes, clamshells, cosmetic containers, and bulk containers.
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