The longest heat preservation time of the insulated food box, can the insulated lunch box keep the h

Common insulation materials are as follows: 1. Polystyrene, like lunch boxes, is also used as building insulation materials; 2. EPS foam board, which is a protective foam when buying a computer; 3. XPS extruded plastic board can be used on the floor as a floor heating insulation layer; 4. Polyurethane board can be fireproof, waterproof and high temperature resistant, and is used for building wall insulation; 5. Rock wool board, mainly using basalt as the main material, is used for external wall insulation; 6. Glass wool board, used for external wall insulation, heat insulation, noise reduction; 7. Rubber and plastic is a general term for the rubber and plastic industry, which is used for the insulation of pipelines and equipment. Thermal insulation materials are generally materials with a guide thermal coefficient less than or equal to.

Thermal insulation materials are developing rapidly, and the use of good thermal insulation technology and materials in industry and construction can often achieve twice the result with half the effort

Insulated food box. Capacity liters.

Stainless steel shell and inner tank, with plastic lunch box and spoon inside, excellent thermal insulation performance.

This product has a delicate appearance, convenient and practical, and is an ideal household item for you to travel and etiquette.

Packing: Packed into small plastic bags, small white boxes with independent monochrome printing, one carton for every 12 pcs. The MOQ of this product is 3000pcs.

The duration is 24 hours.

I don't know what kind of insulated food box you're talking about, anyway, I've used one; It can be kept warm for 12 hours. (Actually, it's a very ordinary kind with a glass bottle) is also very cheap.

We all know that if the insulated lunch box loses the thermal insulation function, then it is no different from the general lunch box, that is, it simply holds meals. In this case, when we buy an insulated lunch box, we must understand its insulated time clearly. The following tells you how long the insulated lunch box can be kept warm and how long it can be dismantled.

A good quality insulated lunch box can generally keep warm for four to five hours, which is enough to meet the needs of ordinary people.

There will be some differences in the holding time of different brands of insulated lunch boxes. The insulated lunch box is an ordinary lunch box with an insulated shell, which is filled with foam plastic in the inner and outer layers, and then plated with metal film in the inner layer. Such a design reduces the heat loss from three aspects: transmission, radiation and convection.

Some insulated lunch boxes will also be equipped with an electric heating device between them and the shell, which can also electrically heat the meals.

In addition, the heat preservation time of the insulated lunch box also depends on the actual situation, and the heat preservation time in summer is longer than that in winter in Chajube, which is easier for everyone to understand.

Summary. The general insulated lunch box keeps warm for three hours, and the first one may reach five hours. This is determined by the quality of the insulated lunch box and the temperature of the outside.

In the hot summer, the insulated lunch box will keep warm for a longer time, even more than six hours.

How long does a general insulated lunch box keep warm? Can you still eat meals that are past this time?

The general insulated lunch box insulation time is three small Wu Yuan grinding hours, and the *** may reach five hours. This is determined by the quality of the insulated lunch box and the temperature of the outside. In the hot summer, the insulated lunch box will keep warm for a longer time, or even more than six hours.

Cavity bucket. You can still eat it after this time.

But not for a day or two.