Polycarbonate and PET water bottles
01.06.2023

Today, 19L plastic water bottles are made from different types of raw materials: polycarbonate and polyethylene terephthalate. At the same time, there are disputes in society – which material is better. For example, polycarbonate bottles – reusable and durable, which makes them practical, and the use of such containers is cost-effective for water supply companies. At the same time, polyethylene terephthalate wins due to the quality of the composition. In general, both types of raw materials have their own characteristics and advantages, which is why they are in demand in production

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Characteristics of Polycarbonate Products

PC (this is how this material is marked in international classification) is produced by the polymerization of phosgene and bisphenol A. The latter is a synthetic analogue of estrogen, a female hormone. This substance has been known since the 1960s. It is obtained by condensing phenol in a mixture with acetone.

Another component of polycarbonate, phosgene, has been known since the early 20th century. In the First and Second World Wars, this substance was used as a chemical weapon. Possessing a toxic effect, phosgene had a devastating effect on people. Interestingly, although it was prohibited to use it in the production of chemical weapons in 1993 due to its high harm, phosgene is still allowed in the industry. In particular, this component is used in the production of polycarbonate.

Despite the presence of bisphenol A and phosgene in PC bottles, they are in demand. The reason lies in their excellent operational properties:

  • Reliability;
  • Resistance to wear. One bottle can be used up to 60 times;
  • Thermal resistance, which allows washing polycarbonate products at temperatures above 60 degrees Celsius (according to EWBA recommendations). However, it is worth noting that heating the material above 70 degrees Celsius leads to the release of bisphenol compounds;
  • Suitability for recycling.

However, it should be noted that PC is an expensive material, which is why the production of products from it requires significant costs. The potential harm of polycarbonate bottles due to the presence of bisphenol and phosgene should not be overlooked. This factor is the main reason why alternatives to PC have been sought in the industry. Today, that alternative is polyethylene terephthalate.

Features and Advantages of PET Products

The key difference of 19-liter water bottles made from polyethylene terephthalate is the absence of bisphenol in their composition, which makes them safer for health. The advantages of PET products also include other characteristics:

  • Lightweight;
  • Resistance to low temperatures;
  • Low odor absorption;
  • Impact resistance.

At the same time, PET bottles have low resistance to high temperatures. Heating the material above 60 degrees Celsius leads to the release of harmful compounds (such as antimony, which belongs to hazard class II). This characteristic complicates the disposal of PET bottles.

It is also worth noting a technological feature of production - it is not possible to blow one-time bottles with handles from polyethylene terephthalate, but the handle can be integrated mechanically. You can also order handles for bottles from us at the Preform Factory, where mass production of these products is established.

Restrictions on the Use of PC Packaging Worldwide

The presence of harmful compounds like phosgene and bisphenol A in polycarbonate became the reason for the prohibition of this material for tableware production. Canada was the first country to impose a ban on the use of polycarbonate for tableware production in 2008. In the same year, bisphenol A was added to the list of highly hazardous substances in Canada.

In the United States, bisphenol A was officially recognized as a harmful component in 2010. In 2012, the US Food and Drug Administration (FDA) banned the use of PC as a raw material for children's tableware. Since 2013, the use of bisphenol as a component for manufacturing packaging for infant formula has also been banned in the United States.

In 2011, restrictions were also introduced in Europe. In March, the European Commission banned the use of bisphenol in the production of baby bottles, and from June, the sale and import of baby tableware containing bisphenol were prohibited within the European Union.

Australia did not stay behind either. Scientists in this country who participated in collective research in 2014 began urging the government to follow the example of the United States, Canada, and the European Union and ban bisphenol A as a raw material for tableware and packaging production.

France became the first European country to completely ban polycarbonate as a raw material for the production of packaging or any tableware. The corresponding law was registered in 2015.

The ban on bisphenol A is in effect, either fully or partially, in South Africa, Malaysia, Brazil, China, Ecuador, Argentina, more than 10 states in North America, and others.

This trend clearly indicates that PET packaging will gradually replace polycarbonate in the market. Therefore, water bottle manufacturers should already take care to equip their workshops with appropriate equipment for blow molding. You can order PET preforms from us right now.

Zavod Preform: Why It's Beneficial to Collaborate with Us

Our company specializes in the production of PET preforms for manufacturing plastic bottles and containers of various capacities, as well as handles for buckets and bottle caps. We procure the raw materials ourselves and prepare them, and upon request, we can color the materials in different shades using dyes. "Zavod Preform" is also known for its high level of customer orientation on the market. This is reflected in the following features:

  • Accompaniment by a manager throughout the entire collaboration period
  • Possibility of giving preforms individual designs
  • Adherence to deadlines and shipping products throughout Ukraine

In addition, we ensure strict control at all stages of production. Our responsible approach to work and commitment to achieving positive collaboration outcomes allow us to guarantee the quality of our services and products.