How to distinguish the front and back of non woven fabrics, and how to distinguish the front and bac

Non-woven fabrics are divided into positive and negative sides, the front side is smoother and brighter and shiny, and the reverse side is pressed, generally there are small holes on the non-woven fabric, which is the effect of squeezing, so the reverse side is the side with small holes, which is not smooth to the touch, but when making finished products, such as shopping bags, the reverse side is on the outside.

Non-woven fabrics, also known as non-woven fabrics, needle-punched cotton, needle-punched non-woven fabrics, etc., are produced by polyester fibers and polyester fibers (referred to as PET) materials, and are made by acupuncture process, which can be made with different thicknesses, feels, hardness, etc.

Non-woven fabrics have the characteristics of moisture-proof, breathable, flexible, lightweight, flame retardant, non-toxic and odorless, inexpensive, and recyclable. It can be used in different industries, such as sound insulation, heat insulation, electric heating sheets, masks, clothing, medical, filling materials, etc.

Non-woven fabric has no warp and weft threads, which is very convenient for cutting and sewing, and is light and easy to shape, which is deeply loved by handicraft enthusiasts. Because it is a fabric that does not need to be spun and weaved, it is only made by orienting or randomly arranging textile staple fibers or filaments to form a web structure, and then reinforced by mechanical, hot adhesive or chemical methods.

It is not interwoven and braided together by yarn one by one, but the fibers are directly bonded together by physical methods, so when you get the adhesive scale in your clothes, you will find that you can't pull out the thread one by one. Nonwovens break through the traditional textile principle, and have the characteristics of short technological process, fast production rate, high output, low cost, wide use, and many raw materials.

The relationship between non-woven fabrics and spunbond fabrics, spunbond non-woven fabrics, and the subordination relationship between spunbond fabrics and non-woven fabrics. There are many production processes in the manufacture of non-woven fabrics, among which spunbond is one of the non-woven production processes (including spunbond, melt-blown method, hot rolling method, spunlace method, and most of the non-woven fabrics produced by spunbond method on the market are now used).

According to the composition, non-woven fabrics include polyester, polypropylene, nylon, spandex, acrylic, etc.; Different ingredients will have very different styles of nonwovens. Spunbond fabrics, usually refer to polyester spunbond, polypropylene spunbond; The styles of these two fabrics are very close and can only be determined by high temperature tests. Non-woven fabric is a kind of non-woven fabric, which is a non-woven fabric formed by directly using polymer chips, staple fibers or filaments to form fibers through air flow or mechanical webting, and then through spunlace, needle punching, or hot rolling reinforcement, and finally after finishing.

The new fiber products with soft, breathable and flat structure have the advantage of not producing fiber chips, strong, durable, silky soft, and also a kind of reinforcing material, and there is also a feeling of cotton, compared with cotton fabrics, non-woven bags are easy to form, and the cost is cheap.

Hehe, neither of you upstairs are professional.

Non-woven fabrics are divided into positive and negative sides, the front side is smoother and brighter and shiny, and the reverse side is pressed, generally there are small holes on the non-woven fabric, which is the effect of squeezing, so the reverse side is the side with small holes, which is not smooth to the touch, but when making finished products, such as shopping bags, the reverse side is on the outside.

Non-woven fabrics are not like other fabrics, there is no positive and negative difference. If you really want to make a distinction, when you stretch out a roll of cloth, the inward side is the front, the outward side is the tail... Hehe.

There is no need to distinguish. It's all the same, unless there's a pattern.

There is no need to distinguish. It's all the same, unless there's a pattern.

Let's see what others have to say.

(1) The pattern and color of the front of the general fabric are clearer and more beautiful than the reverse side. (Some special fabrics may be the opposite, and you can choose according to the use case).

2) For fabrics and fabrics with a striped appearance, the front pattern must be clear and pleasing to the eye.

3) Convex strips and concave and convex fabrics: the front is tight and delicate, with strips or pattern embosses; The reverse side is rougher and has a long floating line.

4) Fleece fabric: Single-sided fluffy fabric, plush side is the front. For double-sided fluffy fabrics, the velvet and neat side is the front of the fabric.

5) Under normal circumstances, the edge of the fabric, the smooth and neat side of the cloth edge is the front of the fabric.

6) Double-layered and multi-layer fabrics: If the warp and weft densities on the front and back are different, the front generally has a larger density or the raw materials on the front are obviously better.

7) Leno fabric: the side with clear grain and prominent warp twisting is the front.

8) Towel fabric: the side with high terry density is the front.

9) Printed fabric: the flower pattern is clear, and the brighter color is the front.

10) Whole piece of fabric: except for export products, all those pasted with instructions (trademarks) and stamped with factory inspection seals are generally reversed.

Note: Most of the fabrics we use have obvious differences between the front and back, but there are also many fabrics with almost the front and back sides, both sides can be applied, so this kind of fabric can not be forced to distinguish its front and back.

The fabric is reversed and the distinction is forward

The inverted order of printed fabrics: not all printed fabrics have inverted order, which should be determined according to the specific pattern. For example, complete patterns, portraits, vehicles, ships, towers, forests, etc., can not be reversed, otherwise the appearance will be affected.

Plaid left and right asymmetrical fabrics, called"Yin and Yang grid", the upper and lower asymmetrical fabrics are called"Inverted straight"。Care should be taken to make the plaid of the whole dress consistent, otherwise, the plaid will be messy and affect the styling effect of the appearance.

There are the following ways to distinguish the front and back of the fabric: 1. General fabrics: the pattern and color of the front are clearer and more beautiful than the reverse side; 2. Printed fabrics:

The flower pattern is clear, and the brighter color side is the front; 3. Convex strips and concave and convex fabrics: the front is tight and delicate, with strips or pattern embosses and the reverse side is rough.

1. Identification according to the tissue structure of the fabric

1) Plain weave fabric; The front and back of the plain weave fabric are difficult to identify, so there is no real distinction between the front and back (except for calico). Generally, the front of the plain weave fabric is relatively smooth and clean, and the color is uniform and distinct.

2) Twill fabric: twill structure is divided into two types: single-sided twill and double-sided twill. The lines of the unilateral twill are clearly visible on the front and blurred on the back.

3) Satin fabric: Because the front warp or weft of the satin fabric floats out of the cloth surface more, the cloth surface is smooth and tight, and it is shiny. The reverse side of the grain is like plain weave and twill, and the luster is dull.

2. Identification according to fabric pattern and color

The patterns and patterns on the front of various fabrics are relatively clear and clean, and the shape and line outline of the patterns are relatively fine and obvious, with distinct layers, bright and vivid colors; On the reverse side, the color is lighter than the front, the lines are more blurred, the pattern lacks layers, and the luster is duller.

3. According to the fabric organization change and pattern identification

The texture patterns of jacquard, tigue, and strip fabrics are varied. Where the front of the weave is generally less floating, the stripes, lattices and proposed patterns are more obvious than the reverse side, and the lines are clear, the outline is prominent, the color is uniform, and the light is bright and soft; On the reverse side, the pattern is relatively blurred, the outline is not clear, and the color is dull.

4. Identification according to the fabric edge:

Generally, the front edge of the fabric is flatter and more structured than the reverse side, and the edge of the reverse side is curled inward. The fabric woven by the shuttleless loom has a relatively flat edge on the front side, and it is easy to find the wool tufts of the weft head on the reverse edge.

1) Raised fabric: the front of the fabric is densely plush. The reverse side is a frizz-free tissue. The ground structure is obvious, such as plush, velvet, velveteen, corduroy, etc. Some fabrics are so fluffy that even the texture of the ground is difficult to see.

2), rotten fabric: after chemical treatment into the pattern of the front outline is clear, layered, bright color, if it is a suede rotten flower, the suede is plump and flat, such as rotten silk, georgette velvet, etc.

There are several ways to distinguish between the front and back of a fabric:

1. General fabrics:

The color of the pattern on the front is clearer and more beautiful than that on the reverse side;

2. Printed fabrics:

The flower pattern is clear, and the brighter color side is the front;

3. Convex strips and concave and convex fabrics:

The front side is tight and delicate, with stripes or pattern embosses, while the reverse side is rougher, with long floating lines;

4. Raised fabrics:

5. Towel fabric:

The side with a high density of terry is the front;

6. Double-layer multi-layer fabric:

If the warp and weft densities on the front and back are different, the front side will generally have a larger density or the raw material on the front side is better;

7. Leno fabric:

The veins are clear, and the protruding side is the front;

8. Whole piece of fabric:

In addition to export products, where there is a manual (trademark) and stamped with a factory inspection seal, the general is the opposite, 9, the front and back are very similar fabrics:

Both sides can be used as fronts.

German E+L has this kind of equipment, which is not too high, 10 tens of thousands of yuan.

Fanshi Electronic Technology also has this kind of equipment, which is much lower than the imported one.

If production needs to monitor the front and back sides in real time, it is best to use machine identification, which is more efficient and less costly.

Twill cloth skimming is the face is the lining.

There are needles on the edge of the cloth, how to distinguish between the front and the back.

Sometimes it's hard to distinguish between the front and back of a fabric. Because no matter how you look at it, it feels the same. The front and back of many fabrics look like twin brothers. In fact, there are still some exquisite, so how to distinguish the front and back of the fabric?

1.For ordinary fabrics, the color of the front pattern is relatively clear and beautiful.

2.Fabrics with a lattice appearance and fabrics with color matching patterns, the front pattern is clear and pleasing to the eye.

3.Convex and concave and convex fabrics, the front is tight and delicate, with stripes or pattern embosses; The reverse side is rougher and has a long floating line.

4.Raised fabrics: Single-sided raised fabrics have the plush side on the front. For double-sided fluffy fabrics, the velvet and neat side is the front of the fabric.

5.Observe the edge of the fabric, the smooth and neat side of the edge is the front of the fabric.

6.Double-layer multi-layer fabrics, such as the warp and weft densities on the front and back are different, generally have a larger density on the front or the raw materials on the front are better.

7.Leno fabric: the warp with clear texture is the front side.

8.Terry fabric: The side with a high terry density is the front.

9.Printed fabrics: the pattern is clear, and the brighter color side is the front.

10.Whole fabric: Except for export products, those pasted with instructions and stamped with factory inspection seals are generally reversed.

Most fabrics have obvious differences between the front and back, but there are also many fabrics that are very similar to the front and back, and can be applied on both sides, so this kind of fabric can not be forced to distinguish between the front and back.

For the front and back of the fabric, the front is generally obvious, and only individual front and back sides can be used. Fabrics that can be used on both the front and back are also common.

1. Look at the edge of the cloth with the same color fabric. The front and back sides of the fabric can usually be judged by the smoothness of the cloth edge, the smoothness of the front edge is judged, and the front edge is relatively smooth and smooth, and the luster is gorgeous; The edge of the cloth on the reverse side is rough, and the light color is dull.

2. Look at the depth of the color of the cloth. The color difference between the front and back of the printed cloth is large, and the flower pattern is clear and the color is bright. The flower pattern is fuzzy and the color is dull.

3. The twill fabric looks oblique. The oblique direction of the front twill lines such as gabardine and double-sided cards is oblique from the upper right to the lower left, showing the shape of "apostrophe"; The front twill of polyester and cotton is oblique from the upper left to the lower right, and it is in the shape of "squeezing".

4. Look at the pattern of jacquard fabric. The front pattern of all jacquard fabrics is woven precisely and meticulously, the stripe pattern is more obvious than the reverse side, and the line outline is also more clearly convex from the cloth surface, and the luster is soft and beautiful.

5. Fluffing (fleecing) fabrics look plush. Single-sided raised fabric, the plush side is the fabric front; Double-sided raised fabric, with the plush dense, neat, even, plump side as the fabric front.

6. Multi-layer (heavy) fabrics look at the density. Generally, the front side has a large density, or the front side of the material is better.

7. Woolen woolen surface. The front side is more delicate than the back side, the fluff is plump, uniform and neat, and the reverse side has a rough appearance, uneven color, and there are impurities, defects, coarse hair, cavity hair, etc.

8. Woolen woolen fabrics. The front is smooth and clean, with few fluffs, neat and uniform, and the back side has many fluffs and uneven lengths.

9. Towel fabric. Use the denser side of the loop as the front of the fabric. 10. When the fabric is packed in pieces, the front of the single cloth is facing the inside, and the inner layer is the front when the double cloth is folded in half.

1. Fire.

Of course, the materials may not be able to be operated again, but if you can distinguish the real qualified products and inferior products, it is also worth losing a part of the materials, and the inferior products are different from the normal materials due to the characteristics of the construction materials of the operation, so they can be ignited after the fire, and the separation battle will be extinguished immediately, and the color of the flame is also different from the real non-woven fabric, which is easy to distinguish.

2. Soak in water. The operation of water can quickly detect the authenticity of polyester non-woven fabrics, because the specific gravity of non-toxic products is very small, it will surface immediately after pressing into the water, and the products of the different grids rarely surface after pressing into the water, because the specific gravity is greater than the water, this is the test of the preparation of the fighting spirit.

3. Chestnut. This kind of weaving will not cause any damage to the material, if the PET non-woven fabric makes a crisp sound when the chestnut is a qualified product, if the sound is very boring, it is an inferior product.

Due to the hot growth of the PET non-woven products market, there are many fake non-woven products or products with serious quality differences in the market, which has caused serious infringement on the rights and interests of consumers.