Memory pillows, also known as space memory pillows, zero-pressure memory pillows, slow-recovery sponge pillows, and more. Polyether polyurethane was developed by NASA to resolve the pressure on astronauts, and then gradually applied to various medical and civilian products, especially pillows made of this material, which have viscoelastic properties and can be placed with the head and neck. The change is automatically deformed and kept in close contact with the neck at any time, in particular, it can fix the head and prevent the head from slipping and causing "stiffing".
At present, various polyurethane materials can be found on the market to produce pillows, and the prices are also very different. Many consumers complain that the pillows do not rebound after purchase, and there is no texture on the hands. The pillows become too hard or too soft as the weather changes. Wait. In fact, high-grade slow-rebound material pillows have many links that are difficult for general manufacturers to use in their raw materials, production processes and formulations.
Consumers can identify high-grade slow rebound materials from the following aspects:
One: Density: Density is the basic index of high-grade slow-rebound material. Generally, the density of polyurethane can be 70-100, and the cutting process can be 40-70. If it exceeds this range, it may be false. There is a density of 130-150 on the market, which is almost unrealistic for pure polyurethane producers. The only possibility is to add other things, such as greater than polyurethane, such as talcum powder. From the perspective of a professional polyurethane sponge technician, 110-density pure polyurethane is possible, and other possibilities are not present. In addition, even products of the same density will vary greatly, mainly due to differences in formula, process and raw materials. That is to say, high-grade slow-rebound materials must be high-density, but only high-density materials are not necessarily high-grade materials. ;
Two: rebound time: Many consumers think that the longer the rebound time, the better, this is a misunderstanding. A good rebound time is about 3-5 seconds. Too short to get a slow rebound effect; too long will make the body stiff (think if you turn over, it hasn't rebounded for a long time);
Three: Manufacturing process: There are two manufacturing processes for slow rebound: cutting and molding. Cutting is the finished slow-recovery sponge that is cut into a pillow. Because the molding is by cutting instead of the mold + additive, no other additives are added, so even the pure polyurethane density can only achieve 40-70 density. Molding is made by a series of processes such as adding additives, foaming, and mold pressing. The addition of other additives, including foaming and softness, increases the density by 70-100. Feel good. The life of the pillow is independent of this process.
Four: feel and temperature induction: high-grade slow rebound sponge feels very comfortable, pinch it up like the feeling of kneading dough, almost slow rebound or not feel a little bit worried, or some stiff. At the same time, this high-grade slow rebound has a good temperature sensing, which will become soft and hard with temperature changes, and the handprint can be seen without putting pressure on the hand;
Five: Service life: Polyurethane memory foam pillow is mainly related to pure polyurethane. If it is pure polyurethane, it should not be deformed for more than 5 years, but if it is added with talcum powder for increasing density and weight, pillow quality Poor, usually only used for 1 - 2 years.
Nowadays, after buying polyurethane pillows, many consumers have doubts about the smell of polyurethane pillows. Are they worried about the irritating smell? Is it harmful to the human body?
If it is genuine, the scent of the pillow that has just been opened is normal, and it will not cause any harm to the human body. It will disappear after one or two days. Some people who are sensitive to odors can use the pillows in a ventilated place for 24 hours before use, and it is best not to touch them directly, add a cover;
For example, if you buy a pillow with a stimulating taste of polyurethane, it is recommended to soak it in water for more than 24 hours, and then use it to partially remove harmful residues and volatile odors. Of course, the most important thing is to first determine whether it is a "three no" product and then buy it!
At present, various polyurethane materials can be found on the market to produce pillows, and the prices are also very different. Many consumers complain that the pillows do not rebound after purchase, and there is no texture on the hands. The pillows become too hard or too soft as the weather changes. Wait. In fact, high-grade slow-rebound material pillows have many links that are difficult for general manufacturers to use in their raw materials, production processes and formulations.
Consumers can identify high-grade slow rebound materials from the following aspects:
One: Density: Density is the basic index of high-grade slow-rebound material. Generally, the density of polyurethane can be 70-100, and the cutting process can be 40-70. If it exceeds this range, it may be false. There is a density of 130-150 on the market, which is almost unrealistic for pure polyurethane producers. The only possibility is to add other things, such as greater than polyurethane, such as talcum powder. From the perspective of a professional polyurethane sponge technician, 110-density pure polyurethane is possible, and other possibilities are not present. In addition, even products of the same density will vary greatly, mainly due to differences in formula, process and raw materials. That is to say, high-grade slow-rebound materials must be high-density, but only high-density materials are not necessarily high-grade materials. ;
Two: rebound time: Many consumers think that the longer the rebound time, the better, this is a misunderstanding. A good rebound time is about 3-5 seconds. Too short to get a slow rebound effect; too long will make the body stiff (think if you turn over, it hasn't rebounded for a long time);
Three: Manufacturing process: There are two manufacturing processes for slow rebound: cutting and molding. Cutting is the finished slow-recovery sponge that is cut into a pillow. Because the molding is by cutting instead of the mold + additive, no other additives are added, so even the pure polyurethane density can only achieve 40-70 density. Molding is made by a series of processes such as adding additives, foaming, and mold pressing. The addition of other additives, including foaming and softness, increases the density by 70-100. Feel good. The life of the pillow is independent of this process.
Four: feel and temperature induction: high-grade slow rebound sponge feels very comfortable, pinch it up like the feeling of kneading dough, almost slow rebound or not feel a little bit worried, or some stiff. At the same time, this high-grade slow rebound has a good temperature sensing, which will become soft and hard with temperature changes, and the handprint can be seen without putting pressure on the hand;
Five: Service life: Polyurethane memory foam pillow is mainly related to pure polyurethane. If it is pure polyurethane, it should not be deformed for more than 5 years, but if it is added with talcum powder for increasing density and weight, pillow quality Poor, usually only used for 1 - 2 years.
Nowadays, after buying polyurethane pillows, many consumers have doubts about the smell of polyurethane pillows. Are they worried about the irritating smell? Is it harmful to the human body?
If it is genuine, the scent of the pillow that has just been opened is normal, and it will not cause any harm to the human body. It will disappear after one or two days. Some people who are sensitive to odors can use the pillows in a ventilated place for 24 hours before use, and it is best not to touch them directly, add a cover;
For example, if you buy a pillow with a stimulating taste of polyurethane, it is recommended to soak it in water for more than 24 hours, and then use it to partially remove harmful residues and volatile odors. Of course, the most important thing is to first determine whether it is a "three no" product and then buy it!
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