Oftentimes, small businesses and individuals will have occasion to drop something in the mail that has a pretty short shelf life. Whether it's perishable or it simply must remain frozen until it reaches its destination, mailing goods and supplies with temperature constraints can be tricky until you learn the right techniques for ensuring they will arrive in proper condition. Since many people find themselves asking, "How do I ship ice cream or cold goods?",  I've compiled this list of helpful tips for shipping non-traditional food or medicinal goods that must remain frozen. Thankfully, your secret weapon in the war against your products melting during shipping is insulated shipping boxes and perishable goods mailers. 

How Can Insulated Mailing Packages Help You?

Imagine that you're a small business specializing in delicious ice creams. Eventually, you start doing so well that you want to bring your frozen treats online and expand your client base. Unfortunately, this means shipping frozen goods, which can be quite a headache if you don't know what you're doing. Insulated shipping boxes specially designed for sending ice cream and perishables are perfect for the task. These speciality cold mailers are built with multiple layers which allow them to protect your products from crush damage during transit, while also keeping them icy cold on the inside. 

Specialty cold mailers, also known as 'control temp packaging', usually have an internal lining of high density foam to keep food cold during mailing. For example, you might pack your insulated shipping box with dry ice or frozen ice packs, and put your ice cream, perishable food or medicine in the center. By sealing up this tight internal foam container, you will ensure that your products will stay icy cold for up to several days, which is plenty of time to rush deliver your perishable package, even if it has to go across the country!

Keeping Your Goods Cold During Mailing

If you're concerned about your ice cream, food or medicine shipments thawing out during their journey, here are a few tips for ensuring maximum temperature control during transit. 

control temp packaging insulated shipping box

First, make sure you use a good mix of at least two different freezing devices. For example, you can line your internal foam cold mailer with several frozen ice  or dry ice packs, but you should also include several freezable gel packs, which are generally better about retaining cold temperatures over a long period of time. By using a mixture of freezing devices, you can ensure that your insulated shipping container stays frosty for longer. 

Second, always ensure a super-tight seal on the internal foam box of your cold mailing container. The basic design of most insulated shipping boxes is two-fold. There is an external corrugated cardboard container, which may or may not be additionally padded, that protects its contents from being crushed or otherwise compromised. Inside this protective outer shell is the true cold box, which is made of high density foam or plastics that are designed to retain super cold temperatures over time. When you have finished packing your ice cream for shipment, ensure that the lid of this cold storage box is perfectly fitted against the lower portion of the box. 

thick walled cold shipping containers

Now, using duct tape, make a super-tight seal around the rim of the box's lid. This will help to prevent any warm external air from infiltrating your frozen shipment and keep the cold temperatures inside where they belong.