Can a double rack dishwasher clean plastic food containers?

Sep 08, 2025

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Oliver Smith
Oliver Smith
Oliver is a senior engineer at Zhejiang Zhongyi Ouge Electrical Appliance Co., Ltd. With over 15 years of experience in the electrical appliance industry, he has played a key role in the development of the company's multi - functional commercial dishwashers. His in - depth knowledge and innovative thinking contribute significantly to the product's performance improvement.

Can a double rack dishwasher clean plastic food containers?

As a supplier of Double Rack Dishwashers, I often encounter questions from customers about the dishwasher's capabilities, especially when it comes to cleaning plastic food containers. Plastic food containers are a staple in many households and commercial kitchens, and ensuring they are properly cleaned is crucial for health and hygiene. In this blog post, I'll explore whether a double rack dishwasher can effectively clean plastic food containers, the factors that influence the cleaning process, and some tips for getting the best results.

The Basics of Double Rack Dishwashers

Double rack dishwashers are designed to provide more loading capacity and flexibility compared to single rack models. They typically have two separate racks, one on the top and one on the bottom, allowing you to separate different types of dishes and utensils for more efficient cleaning. The top rack is usually smaller and designed for smaller items such as glasses, cups, and utensils, while the bottom rack is larger and can accommodate larger plates, bowls, and pots.

These dishwashers use a combination of water pressure, detergent, and heat to clean dishes. The water is sprayed from multiple angles through rotating arms, ensuring that all surfaces of the dishes are thoroughly cleaned. The detergent helps to break down grease and food particles, while the heat helps to sanitize the dishes and dry them quickly.

Can a Double Rack Dishwasher Clean Plastic Food Containers?

The short answer is yes, a double rack dishwasher can clean plastic food containers. However, the effectiveness of the cleaning process depends on several factors, including the type of plastic, the level of soiling, and the dishwasher settings.

Type of Plastic
Not all plastics are created equal when it comes to dishwasher safety. Some plastics are more heat-resistant and can withstand the high temperatures and water pressure in a dishwasher, while others may warp, melt, or release harmful chemicals. It's important to check the manufacturer's instructions or look for a dishwasher-safe symbol on the plastic container before putting it in the dishwasher.

Generally, plastics labeled as #5 (polypropylene) are considered dishwasher-safe. Polypropylene is a strong and heat-resistant plastic that can withstand the high temperatures in a dishwasher without warping or melting. Other plastics, such as #1 (PET), #2 (HDPE), and #4 (LDPE), may also be dishwasher-safe, but it's always best to check the manufacturer's recommendations.

Level of Soiling
The level of soiling on the plastic food containers also plays a role in the cleaning process. If the containers are lightly soiled with just a few food particles, a double rack dishwasher should be able to clean them effectively. However, if the containers are heavily soiled with grease, oil, or dried-on food, they may require some pre-treatment before being placed in the dishwasher.

For heavily soiled containers, it's a good idea to scrape off any large food particles and soak the containers in warm, soapy water for a few minutes before loading them into the dishwasher. This will help to loosen the dirt and make it easier for the dishwasher to clean the containers.

Dishwasher Settings
The dishwasher settings can also affect the cleaning performance. Most double rack dishwashers have different wash cycles and settings, such as normal, heavy, and delicate. For plastic food containers, it's best to use a gentle or delicate cycle with a lower water temperature and less water pressure. This will help to prevent the plastic from warping or melting.

It's also important to use a high-quality dishwasher detergent that is specifically designed for use in dishwashers. The detergent should be able to break down grease and food particles without leaving any residue on the plastic containers.

Tips for Cleaning Plastic Food Containers in a Double Rack Dishwasher

To ensure that your plastic food containers are thoroughly cleaned in a double rack dishwasher, here are some tips to keep in mind:

Load the Containers Properly
Place the plastic food containers in the dishwasher so that they are not overcrowded. Overcrowding can prevent the water and detergent from reaching all surfaces of the containers, resulting in poor cleaning performance. It's also a good idea to place the containers in the top rack, as this will expose them to less water pressure and heat.

Use a Dishwasher Basket
If you have small or irregularly shaped plastic containers, it's a good idea to use a dishwasher basket to keep them in place and prevent them from moving around during the wash cycle. This will ensure that all surfaces of the containers are thoroughly cleaned.

Check the Containers After the Wash Cycle
After the wash cycle is complete, check the plastic food containers to make sure they are clean. If there are any remaining food particles or stains, you may need to rewash the containers or clean them by hand.

Dry the Containers Properly
Once the containers are clean, it's important to dry them properly to prevent the growth of mold and bacteria. You can either let the containers air dry or use a clean towel to dry them. Avoid stacking the containers while they are still wet, as this can trap moisture and lead to mold growth.

Commercial Applications

In addition to household use, double rack dishwashers are also commonly used in commercial kitchens, such as restaurants, cafes, and catering services. For small-scale catering operations, a Small-scale Catering Dishwasher can be a great option. These dishwashers are designed to handle a moderate volume of dishes and are often more compact and affordable than larger commercial models.

For larger commercial kitchens, a Vertical Top Loading Dishwasher or a 100-person Capacity Dishwasher may be more suitable. These dishwashers have a larger capacity and can handle a higher volume of dishes, making them ideal for busy restaurants and catering events.

Conclusion

In conclusion, a double rack dishwasher can clean plastic food containers, but the effectiveness of the cleaning process depends on several factors. By choosing dishwasher-safe plastics, pre-treating heavily soiled containers, using the right dishwasher settings, and following the tips outlined in this blog post, you can ensure that your plastic food containers are thoroughly cleaned and sanitized.

2100-person Capacity Dishwasher

If you're in the market for a double rack dishwasher for your home or commercial kitchen, I encourage you to contact us for more information. Our team of experts can help you choose the right dishwasher for your needs and provide you with professional installation and after-sales support.

References

  • "Dishwasher-Safe Plastics: What You Need to Know." The Spruce, https://www.thespruce.com/dishwasher-safe-plastics-4175334.
  • "How to Clean Plastic Food Containers in the Dishwasher." Real Simple, https://www.realsimple.com/food-recipes/getting-organized/how-to-clean-plastic-food-containers.
  • "The Best Dishwashers for 2024." Consumer Reports, https://www.consumerreports.org/dishwashers/best-dishwashers-a7810686786/.
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