Plastic containers for food are ubiquitous in modern kitchens, playing a crucial role in storing leftovers, packing lunches, and preserving ingredients. While often simply referred to as “plastic containers,” a deeper dive reveals a more nuanced world of terminology, materials, and functionalities. This article explores the various names and classifications of these essential kitchen items, highlighting their composition, uses, and importance in maintaining food safety and reducing waste.
The Common Names and Their Meanings
The most common and widely understood term is, of course, plastic containers. This encompasses a broad category of vessels made from various types of plastic, designed specifically to hold food.
Food storage containers is another frequently used phrase, emphasizing their primary purpose: preserving food and extending its shelf life. This term highlights their utility in preventing spoilage and reducing food waste.
You might also hear the term Tupperware used generically, even when referring to containers from other brands. Tupperware, a brand name, became synonymous with airtight plastic containers due to its early prominence and effective marketing. However, it’s important to remember that Tupperware is a specific brand, not a general term for all plastic containers.
Takeout containers are usually mentioned when referring to the single-use plastic containers given by restaurants. These are designed for transporting food safely but are often not meant for long-term storage or repeated use.
Understanding the Different Types of Plastic
The world of plastic is far from monolithic. Various types of plastic are used to manufacture food containers, each with its own properties, advantages, and disadvantages. Understanding these differences is crucial for making informed choices about food storage.
Polyethylene Terephthalate (PET or PETE)
PET is a common plastic often used for beverage bottles and some food containers. It’s lightweight, strong, and recyclable. It is often transparent or translucent. PET containers are generally considered safe for single use but may not be suitable for repeated washing and reuse, especially at high temperatures, as they can potentially leach chemicals.
High-Density Polyethylene (HDPE)
HDPE is a more rigid plastic known for its strength and resistance to chemicals. It’s frequently used for milk jugs, detergent bottles, and some food storage containers. HDPE is considered a safer plastic for food storage because it’s less likely to leach chemicals. It’s also highly recyclable.
Polyvinyl Chloride (PVC or V)
PVC is less commonly used for food containers due to concerns about its chemical composition. It’s more often found in plumbing pipes and other construction materials. While certain types of PVC are approved for food contact under specific conditions, it’s generally best to avoid PVC containers for food storage unless clearly labeled as safe.
Low-Density Polyethylene (LDPE)
LDPE is a flexible plastic used for plastic bags, cling wrap, and some squeeze bottles. While generally considered safe for food contact, LDPE is not as strong or heat-resistant as HDPE, making it less suitable for long-term food storage containers.
Polypropylene (PP)
PP is a versatile plastic known for its high melting point and chemical resistance. It’s frequently used for food containers that can be microwaved or washed in the dishwasher. PP is considered a safe plastic for food storage and is widely used in reusable containers.
Polystyrene (PS)
Polystyrene, often referred to as Styrofoam, is a lightweight and inexpensive plastic. It’s commonly used for disposable cups, plates, and takeout containers. Polystyrene is generally not recommended for long-term food storage, especially when exposed to heat, as it can leach chemicals.
Other Plastics
The “Other” category, often labeled as #7, includes a variety of plastics, including polycarbonate and acrylic. Polycarbonate contains bisphenol A (BPA), a chemical of concern. While BPA-free alternatives are available, it’s important to check the labeling carefully when purchasing containers made from this category of plastics.
Decoding the Recycling Symbols
Most plastic containers have a recycling symbol with a number inside, ranging from 1 to 7. This number indicates the type of plastic used to make the container. Understanding these symbols is crucial for proper recycling and making informed choices about food storage.
- #1 (PET or PETE): Common for water bottles and soda bottles.
- #2 (HDPE): Often used for milk jugs and detergent bottles.
- #3 (PVC or V): Less common for food containers.
- #4 (LDPE): Used for plastic bags and cling wrap.
- #5 (PP): Frequently used for reusable food containers.
- #6 (PS): Common for Styrofoam cups and takeout containers.
- #7 (Other): Includes polycarbonate and other plastics.
Features and Functionality
Beyond the basic name and plastic type, food containers come in a variety of designs and functionalities. These features contribute to their effectiveness in storing and preserving food.
Airtight Seals
One of the most important features of a good food container is an airtight seal. This prevents air from entering the container, which can cause food to dry out, spoil, or absorb odors from the refrigerator. Airtight seals are crucial for maintaining freshness.
Microwave and Dishwasher Safe
Many plastic containers are designed to be microwave and dishwasher safe, providing convenience for reheating leftovers and cleaning. However, it’s important to check the labeling to ensure that the container is indeed suitable for these uses, as some plastics can warp or leach chemicals when exposed to high temperatures. Containers labeled “microwave-safe” and “dishwasher-safe” offer added convenience.
Stackable and Nestable Designs
Space-saving designs are essential for efficient kitchen organization. Stackable containers allow you to store multiple containers on top of each other, while nestable containers can be stored inside each other when not in use. Stackable and nestable features maximize storage space.
BPA-Free
As awareness of the potential health risks associated with BPA has grown, many manufacturers have switched to producing BPA-free containers. Choosing BPA-free containers is a safer option for food storage, especially for children and pregnant women.
Portion Control
Some containers are designed with portion control in mind, featuring pre-measured compartments or markings to help you manage your food intake. These are popular for meal prepping and weight management. Portion control containers promote healthy eating habits.
Materials Beyond Plastic
While plastic dominates the food container market, other materials are also used, each with its own set of benefits.
Glass
Glass containers offer several advantages over plastic. They are non-reactive, meaning they won’t leach chemicals into food. They are also durable, easy to clean, and can be used in the oven, microwave, and dishwasher. Glass is a safe and versatile option for food storage.
Stainless Steel
Stainless steel containers are another excellent alternative to plastic. They are durable, non-reactive, and easy to clean. They are also lightweight and recyclable. Stainless steel is a long-lasting and sustainable choice.
Silicone
Silicone is a flexible and heat-resistant material that is gaining popularity for food storage. It’s non-toxic, easy to clean, and can be used in the microwave and freezer. Silicone containers are a convenient and eco-friendly option.
The Importance of Food-Safe Materials
Choosing food-safe containers is paramount for protecting your health. Materials that are not designed for food contact can leach harmful chemicals into your food, especially when exposed to heat or acidic substances. Always look for containers labeled as “food-grade” or “food-safe” to ensure that they meet safety standards. Prioritize food-safe materials to minimize chemical exposure.
Conclusion
Plastic containers for food, while often simply called “plastic containers” or “food storage containers,” encompass a diverse range of products with varying names based on their specific use, material composition, and features. Understanding the different types of plastic, their recycling symbols, and the importance of food-safe materials is crucial for making informed choices that protect your health and reduce environmental impact. Whether you opt for plastic, glass, stainless steel, or silicone, choosing the right container can help you keep your food fresh, organized, and safe.
What are the most common generic terms used to describe plastic containers for food?
The most common generic terms used to describe plastic containers for food are food storage containers, food containers, Tupperware (though technically a brand name, often used generically), and plasticware. These terms are widely understood and can be used to refer to a variety of plastic containers designed for storing food in the refrigerator, freezer, or pantry. They encompass various shapes, sizes, and materials, all intended to keep food fresh and organized.
Other terms you might encounter include “lunch boxes” specifically for carrying meals, “deli containers” for storing prepared foods, and “freezer containers” designed for withstanding cold temperatures. The specific term used can depend on the context, the intended use of the container, and even regional variations in language. Understanding these common terms makes it easier to find the right containers for your needs.
Are all plastic food containers microwave-safe?
No, not all plastic food containers are microwave-safe. Microwaving non-microwave-safe plastics can cause them to melt, warp, or leach harmful chemicals into your food. It’s crucial to check the bottom of the container for a microwave-safe symbol, usually a small icon depicting a microwave oven.
Containers labeled with the microwave-safe symbol have been tested and approved for use in microwave ovens. If a container lacks this symbol or is labeled with a “not microwave-safe” symbol, it’s best to transfer your food to a microwave-safe dish before heating. Using the wrong type of container can pose health risks.
What are the potential health concerns associated with using plastic food containers?
One of the main health concerns associated with plastic food containers is the potential for chemical leaching. Some plastics, particularly older or lower-quality types, can release chemicals like bisphenol A (BPA) or phthalates into food, especially when heated or exposed to acidic or fatty foods. These chemicals have been linked to various health problems, including hormone disruption and developmental issues.
To minimize these risks, opt for BPA-free containers and avoid microwaving food in plastic unless the container is explicitly labeled as microwave-safe. Consider using alternative materials like glass or stainless steel for food storage, especially for hot foods or long-term storage. Properly cleaning and maintaining your plastic containers can also help reduce potential chemical leaching.
What do the recycling codes on plastic food containers mean?
Recycling codes, also known as resin identification codes, are the numbers inside the chasing arrows symbol found on plastic containers. These codes indicate the type of plastic the container is made from, not necessarily that it is recyclable in your local area. The numbers range from 1 to 7, each representing a different type of plastic polymer.
For example, #1 (PET or PETE) is commonly used for water bottles, #2 (HDPE) for milk jugs, and #5 (PP) for some food containers. Knowing the recycling code helps waste management facilities sort plastics for recycling, but it’s important to check your local recycling guidelines to see which types of plastic are accepted in your community. Simply seeing a recycling symbol doesn’t guarantee that the item is recyclable where you live.
How should plastic food containers be properly cleaned and maintained?
To properly clean and maintain plastic food containers, wash them thoroughly with warm, soapy water after each use. Avoid using abrasive cleaners or scouring pads, as these can scratch the plastic surface, making it more susceptible to bacteria and staining. For stubborn stains or odors, you can try soaking the containers in a mixture of baking soda and water.
Allow plastic containers to air dry completely before storing them to prevent the growth of mold and mildew. If using a dishwasher, place the containers on the top rack to avoid melting or warping, especially if they are not explicitly dishwasher-safe. Regular cleaning and proper storage will help prolong the lifespan of your containers and ensure food safety.
Are there environmentally friendly alternatives to traditional plastic food containers?
Yes, several environmentally friendly alternatives to traditional plastic food containers exist. Glass containers are a popular option, as they are durable, reusable, and do not leach chemicals into food. Stainless steel containers are another excellent choice, known for their durability and resistance to stains and odors.
Bamboo containers, beeswax wraps, and silicone bags are also gaining popularity as sustainable alternatives. These options reduce reliance on petroleum-based plastics and can help minimize your environmental footprint. When choosing alternatives, consider factors like durability, ease of cleaning, and recyclability or compostability at the end of their life.
What are some tips for organizing and storing plastic food containers effectively?
Effective organization and storage of plastic food containers can save space and reduce clutter in your kitchen. A helpful tip is to nest containers of the same shape and size to maximize space efficiency. Storing lids separately in a designated container or lid organizer can also prevent them from getting lost or tangled.
Consider using shelf dividers or pull-out drawers to create designated zones for different sizes and types of containers. Another useful strategy is to purge any damaged or mismatched containers regularly to avoid hoarding unnecessary items. A well-organized system makes it easier to find the right container when you need it and helps maintain a tidy kitchen.