How to measure the quality of sponges and how to distinguish the good from the bad of sponges?

Table tennis is a skill sport with relatively small movements. Many laymen can't tell which ball is of high quality and which ball is difficult to hit! They think that table tennis is a sport where you play and I play, and they can't see the spin in it.

Why basketball can attract girls, let me tell you, because basketball skills are big, the action is chic and fast, in fact, compared to table tennis, that kind of speed can only be said to be okay! The layman can also tell who is the master and who is the rookie. Basketball is a sport for young people, and the collision is more intense.

But table tennis is a national sport, and the amount of table tennis can be large or small, and it is not easy to get injured! What you like is good, do you have to start playing basketball from scratch in basketball fashion? In table tennis, you are a master, but in basketball, you have become trash.

Can you take that feeling? Follow your feelings and play whatever you like. If you play for someone else, that's too tiring!

In fact, table tennis can also catch up with girls, but it's not easy.

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What does your quality mean? If it refers to good or bad, let the expert try to hit it, and the sponge with similar performance hits a dozen or bad is a feeling. If you feel good, it's best to try it yourself, after all, it's hard to say whether the sponge at the same price is good or bad for each other, only whether it is suitable for personal play.

If it is a physical mass, then it seems that the general sponge only publishes hardness and thickness.

1. Look at the appearance of the sponge: the appearance of a good sponge is neat and smooth, while the appearance of some inferior sponges is relatively rough and the version is uneven.

2. Touch it with your hands, the sponge of good power feels smooth and soft, while the inferior sponge feels rough and has an astringent feeling.

3. Tear the outer sponge with your fingernails, a good sponge has good stretchability and is not easy to break, while some inferior sponges are easy to break and fall off, and even produce dust.

4. Look at the resilience, press the sponge with your hand, and the one that can rebound quickly belongs to the good elasticity, and some sponges press down, and the rebound is very slow, which means that its elasticity is not good enough and belongs to the inferior sponge.

The quality of the sponge is mainly good.

Take a look at the following:

1.Appearance: In addition to the special large empty and chaotic sponge, the more delicate and greasy the appearance of the general sea sponge, the smaller the pores, the better.

2.Feel: It can rebound quickly, fluffy sponge is good, and the stiff sponge is inferior.

3.Tensile performance: A good sponge has at least 80 tensile elongation, and those that cannot be reached are low-grade goods.

4.Odor: Normal sponges have a slight smell, but if the smell is unbearable, it is the use of inferior raw materials.

5.Tear strength: A good sponge is not easy to tear, and it must be a cut of corners if it breaks with a light finger.

Look at the density of the sponge, that is, the cubic weight, but also look at the flame retardant standard, and then the color is also a pass, and the light color is good inside. The rest is not heavy.

Excuse me. The hardness mentioned upstairs is not very important, the hardness has its own needs, with a density of 25 kg 1 cubic meter, there is ultra-hard can be up to 200 hardness, ultra-soft can be up to 15 hardness.

The sponge should be hard, not soft, and it is not good to pour some water on the sponge and suck it in quickly.

Go to a store with a good brand and buy a good brand sofa and you're done.

It's not good to pour some water on the sponge and suck it in quickly.

The whole piece is good, the density rebound of the first layer of the three-layer sponge is OK, the density rebound of the second layer is worse than the first, the raw materials are also poor, the chemical residue is more, the smell is large, and some of the second layer is particularly poor The sponge with a lot of talcum powder is used, the seat is very hard, there is no rebound, it will be deformed within 2 years, and the talcum powder is also a carcinogen, and the deformation will also be dusted, causing dust pollution, the third layer is the worst, the recycled sponge is used more, the pollution is serious, the rebound is easy to deform, and the surface of some sponges is not deformed. As soon as you sit down, the pit is too bad for the third layer, and of course the second layer is too bad; The worst part is not these, but each set of layered sponge sofa will brush 10 square to 12 square glue, the sofa is generally done immediately after the order, made to send it to your home immediately, the basic glue is not dry to your home, sealed (difficult to volatilize quickly) a large amount of glue in the sponge bag will release formaldehyde intensively for a long time, and the quality of the glue is mostly very poor, and the harm to the elderly and children is particularly great. The whole sponge is just a process, the choice of sponge depends more on the material, hug the weight, the high-density sponge must be heavy, this does not need to be explained, right? Then jump up and sit on the sponge to see the rebound, a good sponge can rebound at least three times, and open the bag when it's over, to see if it's a whole piece, whether the hole is small and uniform, whether there is no heterochromatic, generally a good sponge is white or light yellow (very light), if it's green and red, these are not good (mostly regenerated sponge), two touches, touch lubrication, or rough, lubrication is preferred, three pinching, pinch down for more than 10 seconds, let go of the hand, the high-density sponge will instantly rebound, there is no trace on the surface, four mention, Grab the small corner of the sponge, a good sponge can be lifted, the poor sponge dare not demonstrate, five smells, a good sponge only has a faint sponge smell, the poor sponge either tastes pungent, or smells disgusting, if there is no smell at all, you should also be careful, it is definitely a deodorant substance, the sponge is definitely not good, the deodorant substance itself is not environmentally friendly, the above five points are layer by layer, if the first step of the sponge is very light, you can no longer look at the back, unless you want a soft seat sofa, uh, The soft seat sofa is not good for the back blood vessels and nerves, especially the elderly, after sitting for a long time (more than 1 hour), it is difficult to get up, and the soft sitting sofa mostly uses feathers or latex surface sticky sponge, simple sponge soft will only deform quickly, in fact, the sofa is not only a sponge, the frame fabric and the overall environmental health of the talent are very important, and finally it depends on how the various details are done, compare it more, don't just listen to what the salesperson says, but also let him prove what he said, many salespeople are cheating, There are only a few really good brand sofas, and most of them are very poor.

Some ways to tell if a sponge is good or bad:

Clause. 1. Look at the appearance, generally speaking, the more delicate the appearance of the sofa sponge, the better, that is, the smaller the pores, the better, (except for space sponge and chaotic space sponge).

Clause. Second, when pressed by hand, the fluffy sponge that can rebound quickly is high-quality, and the sponge that shrinks into a ball is a low-quality sponge.

Clause. 3. Smell the smell, the normal sponge will have a little smell, but if there is a pungent smell, it is an inferior sponge.

Clause. Fourth, look at the strength of the sponge, high-quality sofa sponge is not easy to be torn, if the sponge is broken by hand, it must be an inferior sponge.

The resilience of the sofa is relatively easy to judge, and the sofa with high-quality sponge will generally have a depression of 5-10 cm, and the bounce time is very fast, and the surface is flat. And the sofa with low-quality sponge is the opposite.

As one of the main materials of the sofa, sponge directly affects the service life of the sofa and human health, so when buying a sand delivery mattress, consumers must experience it first-hand and observe carefully in order not to be deceived by the appearance and buy their favorite products.

Choosing a set of comfortable sofas is a more important thing in home life, many people want to lie on the soft sofa after work or relax at home when they also want to have a set of soft sofas, and whether the sofa is comfortable and pleasant has a lot to do with its sponge material. Many people don't know much about sofa sponge, but in fact, there are many types of it, so it will make a lot of differences in the feeling of sitting. Next, I will introduce you to the types of sofa sponges and what kind of sponge is better to use.

Which is the best sofa sponge?

The main types of sofa sponges are A cotton, pink ultra, ultra-soft ultra, blue ultra, gray high elasticity, white elasticity, green high elasticity, yellow high elasticity, color red glue, PU glue, etc.

Cotton: the density is 13kg cubic meters, used to hold the bottom, wooden frame, and cover a layer on the surface;

2.Pink super: the density is 25kg cubic meters, used for armrests, backrests;

3.Ultra-soft super; The density is 36kg cubic meters for the backrest;

4.Lan Chaoli: the density is 30kg cubic meters, which is used for bottoming, seat cushion is not forced**, etc.;

5.Gray high elasticity: density of 35kg cubic meters, for seat cushions;

6.White bullet: the density is 35kg cubic meters, used for seat cushions, the elasticity is better than gray high elasticity;

7.Green high elasticity, yellow high elasticity: the density is 40kg cubic meters, high-grade sofa cushion sponge, better elasticity than white elasticity;

8.Rainbow bomb: also known as violet, with a density of 27kg cubic meters, mainly used for backrests, which is softer than ultra-soft.

9.A kind of doll cotton wool, characterized by good slippery and elasticity, mainly used for fabric sofas, backrests and pillows, with a warm sitting feeling. Suitable for upholstered sofas.

It is necessary to know that the high-quality sponge is made of natural petroleum, the material is elastic, without adding any chemical fuel, environmental protection and pollution-free, high density, in order to improve the comfort of sitting and lying, the foam is soft under the premise of ensuring that the density is not reduced, so that it has higher resilience and anti-aging performance. The encrypted high-resilience sponge liner is comfortable and elastic, the friction of the sofa sponge itself is very large, and it is also very convenient to take out the core after adding the inner sleeve, and it is also very convenient to disassemble and wash the jacket. Generally, the density of the sponge used for sofa cushions is about 35, and there are specifications such as soft, hard, and ultra-soft.

The number of mattresses is generally about 22. High-density sponges are generally not used to absorb water.

The above is the knowledge about sofa sponge introduced to you. In general, green high elasticity, yellow high elasticity, doll cotton silk cotton, etc. are all good materials used to make sofa sponges, and the sofas made are soft and elastic, very comfortable and pleasant. In addition to paying attention to its appearance when choosing a sofa, it is more important to pay attention to its lining.

If you are a user who loves online shopping, it is best to ask what kind of sponge it is when buying a sofa, so as not to be unsatisfactory when you buy it.

Press the rebound of the feel, and if you press down a concave position, the elasticity and density of the quick reset should be okay. This professional will feel it from the feel. If the flavor is still strong, it may be made of very low-quality sponge.

It's inferior! The sponge is divided into high foam, medium bubble and low foam. The high foam is better, soft, elastic and rebounds quickly.

There are many kinds of sofa sponges, and the general market mostly uses cheap 13-18 density sponges, they just wrap the skin and cloth in appearance, and then say how good the quality is! A small number of sofa factories will use good sponge to make sofas, monitoring the quality of first you have to sit on the sofa to feel the elasticity of the sponge, of course, the better the elasticity, the better the shed is clear, the stronger the flexibility of the sponge, if you bring some sofas to sit on for a long time, the chain will not bounce up! Then the sponge quality is relatively poor!

Not durable...

Ignite the smell and distinguish between protein and chemical fiber!

High-density foam is a sponge that weighs more than 45 kg per cubic meter of sponge. Now that the sponge process has been improved, it is no longer advisable to judge the density of the sponge solely by weight. The sponge of the current process has high density and is much lighter than the sponge processed before.

High-density sponges are not judged by weight alone.

There are different classifications of sponges Generally, the density range of sponges is 15-50kg m3

The density of sponges is divided into: 40 degrees hard, 35 degrees of medium soft, soft, 27 degrees and 22 degrees of soft cotton.

45 grams per cubic centimeter or 45 kilograms per cubic meter.

Inger has mature enough technology in this area to inspect the quality of sponge pads and issue test reports.

Different thickness, different elasticity, due to the elasticity of various composite sponge glue are different, and then use different permutations and combinations, you can make elastic varieties, thickness, characteristics, comprehensive effect of very diverse composite sponge glue. Satisfied.

If you buy it personally, you generally can't feel it, and some sponge detection data can only be measured with an instrument, and if it is wrapped in an urban area, you can only press it with your hands to see how you feel.

Yes, sponge testing belongs to the detection of polymer fields, the specific testing content still depends on your needs, find a local testing agency, if there is no local support for the national sample, you can check the top institutions.