Memory foam is one the invention of NASA in 1970. Back to 70s, NASA was invented this kind of foam for using in space & this kind of foam ease the different circumstances for astronauts in the high G level. Because it has great level of cushioning.
The memory foam was not used in any space program since it was created. Otherwise, medical centers found out the potential of memory foam material and tried to using the memory foam in the medical industry to help relive the bedsores.
Memory foam is a material that is viscoelastic. The first time that we saw this product is from 1991. The producers used this foam in mattress. Memory foam is a combination of chemicals.
It is primarily made of PU with mixture of other chemical materials. The mixture of chemical materials with PU different with the process. Memory foam has a secret formula that copyrighted and maintained as a “trade secret” by the producers.
This is due to the fact that different combination of chemical materials with PU deliver varies viscoelasticity and density of memory foam. One of the additives used in PU is silicone.
You need to know that the chemical structure of the memory foam is basically PU, it is flammable.
When the memory foam gets fired unwittingly, it can spread the fire flame expeditiously and also erupt gases that they are toxic.
However, some of the producers in US treat them with flame-retardants like PBDE (Poly Brominated Diphenyl Ethers).
PBDE的一些研究表明，它们是某些动物中神经和异常行为系统受损的原因。
Memory foam keeps away the dust insects and mold due to its chemical structure, as these insects feed on natural fibers like cotton.
Click to read the articleWhat is EPP foam?
There are misunderstanding that the foam has remnant of diisocyanate. Diisocyanate is fairly consumed in the process that we named polymerization reaction with polyol.
Any product made of premium memory foam will not comprise remnant of diisocyanate. There are model of memory foam made of low-cost ingredients, which may be dangerous.
记忆泡沫是完全complicat制造ed procedure might be takes a day long. Memory foams are different from popular fundamental products by molding to the body shape and slowly ready to their original circumstances.
内存泡沫是一种开孔泡沫，其中细胞具有不同的孔，使它们在从用户面向身体的压力下，使空气隔离电池。同样，记忆泡沫细胞对不同温度敏感。
When the foam is getting hot, it can be compressed. This body molding process dwindle displeasure from impact where body parts touch the foam.
The procedure begins with the plastic that made with PU, to which the maker adds an exceptionally chemical blend from families of petrochemicals known as “Monols” and polyols to communicate the proper kind of apathetic flexibility, and dressing such as calcium carbonate to add body and reduce thickness.
将组合加热，直到彼此融化，然后鞭打并搅拌热组合以熟悉使其泡沫类似的空气。
您需要知道，说内存泡沫的主要元素是PU。它们是由线性聚合物组成的化学主食（-NHCO2）。这些基团称为氨基甲酸酯，由多元醇和二异氰酸酯之间的化学反应形成。
When these elements revert with water, in the habitation of catalysts like tin and amines, it shapes cells which are coincident to bubbles. The bubble size is specified by surfactants, which decreased the liquid surface abnormalities.
The recoil is a heat reaction and the aftermath formed is a liquid. The foam, about the viscosity of boodle, is cascade into a slab mold at an accurate rate and temperature. The hot combination is shake within the mold as the air is blow out, shaping the open cell structure.
模具被非常立即干燥以塑造泡沫或PU。再次将模制的碎片冷却，泡沫被移除，洗涤，干燥和观察。
The foam pieces are then clipped into mattress-size sections that are saved until they’re accumulate into a memory foam product. The reaction takes about 5 minutes but the whole foam manufacturing procedure takes the eight hours’ time.
Factors Influencing Mattress Price
A wide variety of factors can contribute to the overall cost of a new bed. The most significant ones are:
材料与结构：新床的记忆泡沫的最大成本因素是使用的材料，以及制作床垫的质量和工艺。
Hybrid beds (which have both innerspring coils and foam) are typically more expensive than all-foam models. And beds made from luxury or specialty materials, such as latex, are also more expensive than standard memory foam.
甚至主营海绵床有很大amount of variance in price, depending on the type of rubber used. Polyfoam is relatively inexpensive, while memory foam and specialty materials such as copper-infused memory foam can add to the cost of a bed.
Mattress Size:
内存泡沫的价格将随着尺寸直接扩展。较小的床，例如双胞胎，通常的价格约为大床的一半。包括加利福尼亚国王和Twin XL在内的不太受欢迎的床尺寸也比传统尺寸的同一尺寸床垫略高。请参阅上表，以了解床垫价格按尺寸的想法。
Online vs. In-Person:
While it may seem logical to purchase a mattress in a brick-and-mortar store where you can test it out, it will almost always be more expensive to go this route. A Consumer Reports investigation found that local mattress stores were selling mattresses at markups of up to 9 times more which means customers were paying $3,000 for a mattress that cost about $300 to make. Online mattress retailers have far lower overhead costs, and are able to sell at much smaller margins. By shopping for a mattress online, you can save a good amount of money.
保修和退货条款：
Most new beds come with some sort of warranty, and most producers also offer some sort of return policy. The details of these policies can influence the initial purchase cost, with longer warranties typically adding some cost to your initial purchase price.
Additional Costs for a New Mattress
The initial purchase price of memory foam is the biggest expense, but it’s not the only one. There are some extra expenses that you’ll want to budget for:
Shipping & Setup Costs:
Depending on where you buy your mattress, you may have to cover the cost of shipping, in-home delivery and/or setup. If not included in the purchase price, expect to spend $50-$100 on shipping, and even more on white-glove in-home delivery. Some companies even offer removal of your old bed, for an additional fee. Many online companies now offer free shipping, so make sure to shop around.
Foundations & Accessories:
除了最初的床垫购买外，您还需要考虑需要的任何配件的成本。粉底/盒子弹簧可能是一项主要成本，即使是床上用品等小东西也可以加起来。这些物品的成本差异很大，但与床垫本身一样。附件价格往往会随着您购买的床垫尺寸而缩放（因此，国王配件的成本将大大高于双胞胎）。同样，像加州国王和双XL这样的奇数尺寸更难找到配件，而且这些尺寸的许多选择更昂贵。
保修和返回政策：
Some memory foam warranties – as well as return policies – have expenses associated with them. For instance, some manufacturers require the customer to pay for return shipping during a warranty claim, or there may be “restocking” fees associated with a product return. Be sure to check the terms of each policy before purchasing.
How to Get a Good Deal on a New Bed
Buy Online – In the majority of cases, purchasing a bed online will be cheaper than going to a local mattress store.
Consider Durability – Buying a cheaper bed may save your money initially, but you may have to replace it sooner. Consider the durability and overall quality of your new bed to save money in the long run.
Comparison Shop – There are hundreds of mattress companies competing for your business. Doing some comparison shopping between several brands can help you get a great deal on a quality product.
Shop During Holiday Sales:
Many mattress companies run attractive sales during various holidays throughout the year. President’s Day, Memorial Day, Independence Day, Labor Day and Black Friday are all great times of year to score a good deal.
Invest in Your Health – Lastly, remember that a quality mattress can have a huge impact on your health and happiness.
Therefore, you don’t want to cut corners. It’s worthwhile to spend a bit more to get a quality bed that will be comfortable and last a long time.
FAQ: (Frequently Asked Questions)
Why is memory foam so expensive?
Mattress brands use foam density ratings to indicate the weight per cubic foot of foam. ... Cheap mattresses often have a density rating of about 1.3, Rudzin says, while those with ratings of 1.5 to 1.8 tend to be of higher quality. Memory foam is even denser, making mattresses built with it more expensive.
Is a 10 inches memory foam mattress good?
High-quality memory foam mattresses 10 to 14-inch thick are good enough to provide body-conforming support. They are durable and can last around 10 to 15 years.
What is the most comfortable memory foam mattress?
A: Editor's Choice – Layla Hybrid.
Best for Side Sleepers – Helix Midnight Mattress.
Best Luxury – WinkBed.
最适合后卧铺的人 - Leesa Hybrid。
最好的冷却 - 桦木床垫。
Best for Stomach Sleepers – Brooklyn Bedding Bloom Hybrid.
最好的混合动力 - 布鲁克林床上用品极光。记忆泡沫床垫持续多长时间？
A: Eight to ten years
Memory foam mattresses can last anywhere from eight to ten years, depending on how well they're cared for. Typically, a memory foam mattress will last as long as any other type of mattress, whether it's an innerspring or hybrid.What are the disadvantages of memory foam mattress?
A: Drawbacks of Memory Foam
Memory foam may be cozy at first, but memory foam reviews always involve customers saying their mattress has serious dips and sags, that the foam eventually does not bounce back. These dips can cause body aches and back pain because you're not getting the support you need.
