How polyester fibers return to normal after long term vacuum compression

The dynamic compressive mechanical properties of Kevlar fiber reinforced composites were systematically studied through experiments. The experimental results show that the Kevlar fiber reinforced composites have obvious damage softening phenomenon and strain rate effect under the action of impact compressive load. For the dynamic stress-strain experimental curves of Kevlar fiber reinforced composites, a rate-dependent dynamic constitutive equation with damage is proposed.

Because the amount of damage introduced reflects the overall effect of various failure modes such as internal matrix cracking, delamination, fiber fracture and so on of Kevlar fiber reinforced composites, the proposed constitutive equation form is relatively simple and easy to embed in the current finite element or finite difference program about impact mechanics, and has certain engineering application value.

Generally speaking, it is enough to re-pass the water, and if it still doesn't work, re-comb it.

OK. You can cross the water for a while.

Long-term vacuum compression, I don't know what it is pressed into, what is the specific use? Isn't polyester just polyester? Are you one, or a shaft, or a tube? If it doesn't work, let's get a new one.

If the quilt is pressed for a long time, there is no way to return to normal! You can find the bouncy of the cotton flower to bounce it again!

There are a lot of factors for this, and it depends on what kind of product you are making of polyester fibers that have been vacuum compressed for a long time, so now I simply don't know how your problem is.

1. Cotton clothes and down jackets will be pressed very flat, and they need to be taken out to dry, and then patted to restore their original shape, and other clothes will not be deformed, but they will be wrinkled and need to be ironed.

2. If it is a quilt and ordinary (velvet and the like) clothes, it is good to dry or pat it after taking it out. If it's easy to wrinkle, it's okay to iron it, don't use it like a suit, just use the suit dust cover to store it. Convenient and no wrinkle problems.

3. If there is no iron, the easiest way is to find a large jar and pour boiling water into it, iron it back and forth in the wrinkled area, and the wrinkles will disappear quickly. This method is suitable for clothing that is not very deeply wrinkled. Another option is to boil a pot of boiling water, open the lid of the pot, and smoke the folds of your clothes against the steam, and the wrinkles will disappear quickly.

4. High-grade wool and silk clothes should not be used in vacuum compression bags, if they are packed inside, they will be wrinkled. When you want to wear it, you have to iron it again, which is very troublesome. Again, these clothes don't have much air, they don't take up much space, and there is no need to use vacuum bags to store them.

Cotton pants, down jackets, quilts, these are suitable for vacuum bags.

Open the closed zipper and take out the quilt to dry, and then it can be restored to its original shape.

It's late, and the upstairs one is so comprehensive, I'm not going to repeat it I wondered, how could you have thought that clothes would get thinner?

It won't affect the clothes.

The vacuumed clothes are still wrinkled after being washed a few times, is there any way?

After the vacuum bag quilt, the quilt is deflated, and the recovery method:

It is not recommended to use vacuum storage bags for quilts, as the fibers are easy to be compressed or even broken and damaged. Drying and patting can be properly restored, but they have an impact on the ability to keep warm and the service life.

Open the closed zipper and take out the quilt to dry, and then it can be restored to its original shape.

Vacuum Compression Bag: As the name suggests, it is a kind of bag that extracts air and allows atmospheric pressure to naturally cause compression. To put it simply, vacuum compression bags are mainly used for quilts and various types of clothing.

It works by pumping the air out of the inside of the quilt (like pressing a sponge to shrink), so that the volume is reduced.

The characteristics of the vacuum compression bag: space-saving, because it is vacuum compression, the original expansion of the item to remove the air in the middle, the volume becomes smaller, a simple analogy, is equivalent to the sponge flattened by hand.

Opposite.

Since the quilt has deflated after being in a vacuum, you have to find a way to fill it up again.

Change the vacuum machine to an inflated state, so that the quilt can suck in enough air first; Then take it to the sun for a few hours, and ask the small stick to pat it in order, the quilt will be fluffy quickly.

Lonely mountain man.

I know it firsthand.

Doing this once doesn't do it like it does without compression.

After a few beatings, it is as perfect as ever.

Lonely mountain man.

Take it out to bask in the sun, and then knock it, it will continue to swell, and it can also remove dust and sterilize!

It will fluff up on its own when opened.

Two hours in the sun is fine.

The garment is placed in a vacuum compression bag, and after being taken out, you can gently pat the stretched garment with your hand to restore it.

The vacuum compression bag is to pump out the air inside the quilt and clothes, so as to reduce the volume, and use the atmospheric pressure to flatten the originally expanded quilt and other items to isolate the outside air, so as to save space and achieve the effect of dust, mildew, moisture and insects, and has not undergone special treatment.

Therefore, after removing the clothes from the compression bag, the clothes come into contact with the air, and the clothes can be restored by gently patting and stretching, or they can be left for a period of time to wait for the clothes to recover naturally.

General cotton products, after being placed in a vacuum compression bag, will be automatically restored when taken out, do not handle them specially. Cotton clothes can be left in the sun to make it soft again. If the clothes are too wrinkled, you can iron them and you're good to go.

It should be noted that high-end clothes cannot be placed in a vacuum compression bag, and it is very difficult to deal with wrinkles. Also, leather products should not be placed in a vacuum compression bag, the leather products will stick together, and if you don't do it, the clothes will be scrapped.

If cotton clothes are wrinkled, it is recommended to try washing them with water before drying them, and when drying, you should pull the clothes and straighten the wrinkled places! If you don't use it, you can only comfort it! ~

If it is a quilt and ordinary (velvet and the like) clothes, it is recommended to take it out and dry it or pat it! If it's easy to wrinkle, you have to iron it, don't use it like a suit, just use the suit dust cover to store it! Convenient and no wrinkle problems.

Go buy a simple iron, just add water to the one and it's convenient!

Just hang it on a hanger for a while or iron it.

The quilt (cotton) can be restored after compressing it with a vacuum bag.

Compression bags can be divided into vacuum compression bags, and the use of compression bags to pack clothes can effectively prevent fleas, mold, moisture, oxidation, etc., so that the clothes are clean. In order to reduce the floor space, you can use compressed bags to pack cotton quilts, which are simple and convenient to operate, and can be moisture-proof, effectively protecting the texture of cotton quilts. When compressing, pay attention not to pump too much air, but to loosen it a little.

The general process starts from discovering the problem and raising the problem, and after discovering the problem, make assumptions about the answer to the problem according to their existing knowledge and life experience Design the first plan, including the selection of materials, design methods and steps, etc. After reaching a conclusion, it is also necessary to reflect on the whole process of the general methodological steps of the experiment: asking questions, making hypotheses, making plans, implementing plans, drawing conclusions, expressing and communicating

Observation is a basic method of science Scientific observation can be made directly with the naked eye, with the help of magnifying glasses, microscopes and other instruments, or with the use of cameras, video recorders, video cameras and other tools, and sometimes it is necessary to measure Scientific observation should have a clear purpose; Observations should be comprehensive, meticulous, and realistic, and recorded in a timely manner; Be planned and patient; Think positively and record in a timely manner; To exchange views and discuss The design of the experimental protocol should be carried out closely around the questions and hypotheses raised When studying the influence of one condition on the research object, the experiment carried out under the same conditions except for the different conditions is called a controlled experiment General steps: find and ask questions; gather information related to the issue; make assumptions; design of experimental protocols; Conduct experiments and record them; analysis of experimental phenomena; Conclusion Investigation is one of the common methods of science When investigating, we must first clarify the purpose of the investigation and the object of the investigation, and formulate a reasonable investigation plan During the investigation process, sometimes because the scope of the investigation is very large, it is necessary to select a part of the survey objects as samples During the investigation process, it is necessary to record truthfully The results of the investigation should be sorted out and analyzed, and sometimes the statistical methods should be used to collect and analyze data is also one of the common methods of science There are many ways to collect information Go to the library to consult books and newspapers, and visit relevant people, The form of information includes text, data, and audio-visual data, etc., and the information obtained should be sorted out and analyzed, and answers and clues should be found from it.

OK. Tap it or bask it in the sun.

The principle of vacuum compression bag is to extract the air in the bag, and the atmospheric pressure compresses it into this shape. The cotton fibers of the quilt are curled and support each other, so that there are a lot of gaps between the fibers, and the quilt is kept warm by the air in the gaps.

However, although cotton fibers have a certain elasticity, they will still have a certain degree of deformation after long-term compression, and it is impossible to completely restore their original shape after taking them out. It will swell by drying or patting in the sun, but it will certainly not swell like new.

Therefore, short-term compression storage can be partially restored, if long-term storage, it is recommended not to use vacuum storage bags, short-term storage can.

Yes, my family can store quilts like this, and before using them, they can dry them in the sun and take a picture.

Yes, but it doesn't go back to the way it was, and there may be creases.

Don't make it too small when you suck it, and hit it when you use it.

Take it out when you use it and dry it in the sun.

When it comes to polyester, we're all very familiar with it. So, what kind of fabric is polyester?

In fact, polyester fibers are synthetic fibers made from polyester condensed by organic diacids and diols and polyester spinning. Polyester is commonly known as polyester, which is widely used in clothing fabrics, polyester has excellent wrinkle resistance, elasticity and dimensional stability, good insulation performance, and is very widely used, suitable for men, women and children.

The first is the advantages of polyester. Polyester fibers have high strength and elastic recovery, so they are strong and durable, wrinkle-resistant and iron-free. Its lightfastness is good, in addition to being worse than acrylic, its lightfastness is better than that of natural fiber fabrics, especially behind the glass The lightfastness is very good, almost comparable to acrylic.

In addition, polyester fabrics are resistant to various chemicals well, and acids and alkalis do not damage them to a large extent, and they are not afraid of mold or insects.

Then there are the disadvantages of polyester poly. In fact, polyester fiber also has many shortcomings, the first disadvantage is that polyester fiber has poor moisture absorption, water absorption, poor melt resistance, and easy to absorb dust, which is caused by its texture; The second disadvantage is that it has poor air permeability and is not easy to breathe; The third disadvantage is that its dyeing performance is poor, and it needs to be dyed with disperse dyes at high temperatures.

In fact, judging from the current situation, polyester fiber sunshine fabrics are also popular on the market, such fabrics have a lot of excellent, sunshade, light transmission, ventilation, heat insulation, anti-ultraviolet, fireproof, moisture-proof, easy to clean and other characteristics, is a very good fabric, mainly used in clothing manufacturing, very popular with modern people. Of course, in real life, if you want to choose a more comfortable and high-end fabric imitation silk cotton, it is actually very good.

All in all, there are advantages and disadvantages to polyester as a material.

Pros: Polyester fibers have high strength and elasticity, so they are durable, wrinkle-resistant, and do not iron. Its lightfastness is better than that of acrylic fibers, and its lightfastness is better than that of natural fiber fabrics, especially the lightfastness after glass fibers is almost equivalent to that of acrylic fibers.

In addition, polyester fabrics have good resistance to various chemicals, and acid and alkali damage to them is small, and they are not afraid of mildew or insect damage.

Disadvantages: First of all, the hygroscopicity of polyester fiber is poor, the water absorption is not strong, the melt resistance is poor, and it is easy to absorb dust, which is due to its texture; Then there is poor air permeability, which is not easy to breathe; Finally, its dyeing performance is poor, and it needs to be dyed with disperse dyes at high temperatures.

1. Breathability.

The polyester fabric is thin and smooth, breathable and cool, and the material is translucent. The polyester fabric is dry and comfortable, suitable for the hot weather of summer.

2. Stability.

The polyester fiber is naturally supple and has a smooth feel, so it won't wrinkle the fabric even if it is pulled. Rugged and durable, suitable for long-term use.

3. Heat resistance.

Polyester fabrics are highly heat-resistant, and the material is fine, and has good insulation against heat. There are many people in the dormitory, the air is stuffy, and the use of polyester fiber can relieve the heat, and the dormitory will not be too dull.

4. Moisture resistance.

The inherent property of polyester fabric is that it does not absorb water and is highly waterproof, so it basically does not get wet or dry. Custom-made polyester fabrics are made to make it easier to use in rainy and humid weather.

Disadvantages of polyester fabrics:

1. Poor water absorption and air permeability.

After soaking in water or sweating, the clothes will stick to the body, causing discomfort, unlike cotton clothes, after sweating, the sweat is absorbed by the fabric and evaporated, and the clothes will not be visibly attached. It is easy to shine after wearing it for a long time.

2. Not wrinkle-resistant.

Use neutral or acidic detergents when washing, and use alkaline detergents will accelerate the aging of the fabric. In addition, polyester fabrics generally do not require ironing, and low-temperature steam light ironing is sufficient. Because no matter how many times you iron it, it's the same as cotton, and it will wrinkle when it comes into contact with water.