Do you really know about camping Sleeping pads

First of all, let's talk about the material and classification of sleeping pads;

1. The most basic material of all sleeping mats is made of "foam", and there are two basic types: closed-cell and open-cell. The so-called closed room foam is a plastic sleeping mat composed of fine bubbles, because each bubble is an independent unit and closed, so this kind of sleeping mat does not absorb water. You can find these incompressible, non-expanding, non-dismantling, multi-colored sleeping mats in outdoor stores around the world. Early closed room sleeping mats were made by vinylnitrile, which cracked when the weather quickly became colder. Most of this material has been replaced by cross-linked polyethylene. Lithographed cross-linked polyethylene is quite hard, so some manufacturers have added EVA (ethylenevinyl-acetate) to increase softness.

2. Open chamber foam is a compressed material that can be found in furniture and sponges. It is made of expanded polyurethane. It is completely different from closed chamber foaming: the bubble chambers in all polymers are connected and form a honeycomb structure. Since the bubble chamber has fewer solid walls (more cavities), the open chamber foam will have a lower weight and be more compressible. But it absorbs water, like a sponge.

Secondly, let's talk about the main functions of each of the two different sleeping bags;

Many inflatable sleeping pads provide a fairly comfortable feeling on the back. Because you can adjust the air pressure of the sleeping pad to match your needs. Although many people who travel in the wild for a long time mostly choose this sleeping mat, this sleeping mat can be easily damaged. For example, confiscated Swiss knives, hot pots, and ice axes that are not placed can puncture sleeping mats and cause air leaks. However, most inflatable sleeping pads will come with a repair nail tool. The weight of these sleeping pads depends on the type, but when compressed and packed, they are only about half the size of the closed room sleeping pads. Open room foam sleeping mats without Nelong envelopes are best not purchased for climbers because they are large and absorb water.

The Closed Room Sleeping Mat is damage-resistant, and if you accidentally step on your crampons, it won't stop you from using it. If something hot falls on your enclosed sleeping mat, it will only melt one hole, and the rest of the room will remain intact. But on the other hand, it is not very soft, so for some people who are used to sleeping on soft mattresses, it is difficult to adapt to the closed room sleeping mat, even though the sleeping mat is very light and large.

Thirdly, let's introduce the manufacturing process of two different sleeping pads;

Some typical open chamber foams are housed in a nylon envelope that can be expanded, which can be improved: firstly, it is waterproof and keeps the foam dry, and secondly, you can adjust the air pressure, so it is more elastic than a sleeping pad in a closed chamber. The inflatable foam room sleeping mat is warmer than the general lithographic air mat because of the addition of the dragon. Because it minimizes air convection and reduces heat loss.

The manufacturing process of a closed chamber foam sleeping mat is quite simple: the foam is poured or pressed into a mold and then cut into the final shape. Some closed chamber foam sleeping pads also add a layer of open chamber foam to increase the softness; But this floor of open chamber foaming will absorb water, and it will make your sleeping bag wet.

Warmth is defined as a closed chamber foam sleeping mat that has an R-value (impedance value for heat transfer) of 2 per half inch (winter load standard) and weighs about one pound. The open chamber foam sleeping mat with a Nailon envelope has an R-value of 4 per one-and-a-half inch and weighs two and a quarter pounds. As for the price, the closed room foam sleeping mat is about one-third to one-quarter of the open room foam sleeping mat.