The introduction of glitter leather

In the PU leather or PVC glue glitter powder, let these leather becomes lighter grain leather, the leather industry collectively referred to as "glitter leather". Glitter Leather is used in different industries. Such as arts and crafts, shoes accessories, decoration materials。

Surface spraying method

In the spray produced by the glitter leather, first with hair broom excess low adhesion of glitter powder swept away, and on the surface of the spray gun for spraying of low viscosity, high solid content, high gloss transparent polyurethane resin, then in the 80 to 120 DEG C drying, the PU resin thin protective layer is formed on the glitter powder surface, and improve the glitter powder adhesion, greatly improve the fastness to rubbing, but also to maintain its unique multi angle reflection effect. In order to reduce the influence of the solvent drying, the air hole can influence the transparency, and the method of spraying and baking is adopted in order to improve the transparency.

From the type of paper coating method in glitter leather surface with a layer of dry transparent resin, its production method by dry polyurethane. The production method of spraying glitter leather as the substrate for laminating on  release paper, the specific process is as follows:

From the paper, coated with transparent polyurethane resin - 130 to 150 DEG C x 1. 5 min drying - coated complex double group polyurethane adhesive - 40 to 50 DEG C micro baking compound glitter leather - curing aged 12 to 24 hours - Glitter leather and paper separation and volumes from the mirror.

The coated after of glitter leather surface form a layer of thin mirror like transparent protective layer, so that the leather to general polyurethane artificial leather wear resistance, winding resistance is greatly improved, and keep the softness, formed on the surface of crystal effect, can be used to wear for the production of high sports shoes, belt, bag and so on.

How to remedy the damaged leather

Generally speaking, leather clothing damaged can be divided into four types.

(1) Surface abrasions: leather surface is ground, but did not make the leather through hole;

(2) Scratch the surface: sharp weapon to cut the surface of a leather, but did not draw the leather;

(3): Break torn : make leather appearance through the mouth, but no hole;

(4) Have a hole: a hole in the shape of a hole.

According to different situations, we can be used for different ways to remedy.

(1) Surface abrasion: clean the virginity, if damage is not deep, direct use of leather coating wipe coating, remedy to the original color and appearance.

(2) Scratch the surface: clean the virginity, with leather adhesive will scratch out skin glue, to be dry, such as obvious signs, use sandpaper, then coated with leather coating slurry until it reaches reply to the original color and appearance.

(3) Break: find a thin piece of leather hides, than the break length, width of about 1.5 mm, put it on the hole. At the same time put glue on the top and leather break tails, and then carefully aligned break, will both cement. Such as breach of obvious, sanded smooth, then coated with leather pulp.

(4) Break hole: find the hole that is larger than the skin and consistent with the leather color. Trimmed the hole, then use leather stuck in the hole. Finally, carefully wipe the residual glue.

PU leather common pitfalls and solutions

Synthetic Leather International Network January 12 hearing: in the production process, PU leather common pitfalls are: pinhole, spot, orange peel, drag lines, floating loose, now wove pad injury, the pattern is not clear, light dumb uneven and so on.

First defect：Pinhole

Cause

1, a mixed solvent evaporation too fast;

2, the furnace temperature is too high.

Solution

1, adjusting solvent formulations;

2, due to lower furnace temperature, especially the first set oven temperature.

Second defect: Spot orange peel

Cause

1, the bottom fabric uneven shrinkage;

2, the surface layer of the primer solvent made up.

Solution

1, the end of the fabric adjustment formula, the major base coat appropriate to add a layer of surface liquid type glue.

A, adjusting solvent formulations;

B, appropriate to accelerate the speed and reduce swelling time;

C, addition of polyethylene plastic surface phenoxy or a crosslinking agent.

Third defect: Tow line

cause

1, a blade opening foreign body;

2, paint unevenness.

Solution

1, the elimination of foreign body;

2, an increase in agitation, the pigment evenly, filtered through the young network.

Fourth  defect: Pine float

cause

1, fit gap is too large, insufficient bonding pressure;

2, the base material is too thin;

3, Fabric Wool cloth too long.

Solution

1, adjust the gap, increase the bonding pressure;

2, thick base material, an appropriate increase in the coating amount of the adhesive layer;

3, appropriate to reduce the length of plush fabric.

V. defect: Line fabric grain

cause

1, fit the gap is too small, fit pressure is too large;

2, incomplete drying;

3, the curing time is not enough.

Solution

1, high-speed gap, reducing the bonding pressure;

2, the speed appropriate to reduce or increase the appropriate oven temperature;

3, an appropriate extension of aging time, especially in winter; or increase the amount of crosslinking agent and accelerator.

Sixth defect: Pad injury

cause

1 periodically pad injury: A, a production process roller or the pressure roller outstanding foreign body; release paper paper at the end of a foreign body.

2, the quality inspection did not find until only the use of units found uncooked good.

Solution

1, A, clear the roller or the pressure roller to highlight differences; B, remove the paper bottom foreign matter.

2, an appropriate increase in the amount of crosslinking agent and accelerator, or consider choosing other kinds of grades of crosslinking agents and accelerators.

VII. Defects: Pattern unclear

cause

1, fit the gap is too small, fit pressure is too large;

2, the release paper use too many times, the paper pattern is unclear.

Solution

1, adjust the fit clearances and pressure;

2, removal of part of the release paper pattern is unclear.

VIII. Defects

Dumb light unevenness

cause

1, the release paper piling up for too long, some moisture.

2, the release paper use too many times, the paper pattern uneven surface of the light dumb.

Solution

1, first empty paper go once, release paper and drying;

2, removal of light dumb uneven portion release paper.

Leather Production Crafts

Synthetic leather manufacturing process can be divided according to the current dry PVC synthetic leather (leather), dry PU synthetic leather, wet PU synthetic leather.

1. PVC synthetic leather began to appear in 1948, yes. Paste stabilizer additives made on the fabric coated with PVC resin plasticizer. Or then laminating a layer of PVC film and then through a certain process machining process made. High-strength products. Processing is easy. Low cost. Do all kinds of bags. The socket. Lining. Debris. The main process includes a main production process are applied directly linked to law. Release paper method and calendering.

2. Dry PU leather

Dry PU leather is China from the late 70s from abroad production technology and equipment to develop the production of its production process through a certain product to the polyurethane resin solution wherein the volatile solvent, the resulting multi-layer film and Burkina Faso a multi-layer structure and body composition. At present, China mainly uses release paper production process based.

3. Wet polyurethane synthetic leather

Wet polyurethane synthetic leather in 1963 by the DuPont company developed to market our country in the early 1980s introduced from Japan as a base microfiber wet polyurethane synthetic leather production line and technology. Then the country have introduced from Europe. Taiwan the hundreds of articles from the felt as the substrate production line. At present, both the nonwoven fabric or microfiber. from the felt substrate for the production equipment can be domestically produced.

Wet polyurethane synthetic leather natural leather is the best alternative, which is to add the DMF solution of polyurethane resin various additives to form a slurry, impregnated or coated onto a substrate, and then placed having affinity with DMF nature, incompatibility with the polyurethane resin water, DMF is replaced with water, the polyurethane resin gradually solidified to form a porous film. The film is called Bass (bass), after the film surface-treated decorative, such as release paper method process film made of different types, different styles of polyurethane synthetic leather.

YIGUAN leather company wholesale various of leathers,leather hides,pvc leather ,pu leather.

Source: Leather Forum

How to choose classical leather wallet

There are many leather hides can use to be leather strap.

Leather Strap: alligator

In general, common for alligator strap mainly from the alligators and caimans. But not the body of the crocodile leather strap can be made. It is only abdomen sofa leather can be used. There are two kinds pattern - square and round shape, square shape soft skin from the abdomen front, round abdomen skin from the side. Because one can only make a few crocodile strap, so the price is expensive.

Leather Strap: calf leather

Many different types of leather can be divided into calf, yellow leather, buffalo leather and so on. Calfskin leather which is the best quality , was born after the use of calf leather tanning is made within six months, texture fine lines, soft hand feel. Yellow leather is most frequently to be used , it is characterized by thick, elastic foot. As water leather, fur sparse, rough surface, the material looks and feels great texture, it is actually quite soft and comfortable to wear.

Leather Strap: lambskin

Lambskin is famous for good elasticity, it very suitable for the production of a strap, soft and comfortable to wear on the wrist. Look closely, lambskin texture clear, strong sense of leather, compared with other, lambskin is lighter, softer texture.

How to Compare Leather Sofa Quality

1.look at the internal structure and stability

A good leather sofa, must use wood nail into the frame. We can feel sofa weight, if it is used packaging board, plywood, nail into the sofa is light in weight, solid wood frame is relatively heavy.

2.look at the internal structure of the fine workmanship

Both leather sofa or sofa, generally at the bottom have zipper can be opened, we can uncover the a angle of seat bottom cloth to view, if no rotten, no insects, no scar and and materials of convergence is not a nail, but to mortise, or moment export each bite, and then glue, that is no problem.

3. look at the quality of leather materials

This is the most critical, also a lot of friends are most concerned about. Leather sofa is characterized by the characteristics of the quality and workmanship of leather fabric. When china leather factory product sofa, they will use different leather. Derived from very much the type of leather, currently on the market widely used is the green husk and half green husk. There is no scar, texture delicate,  with finger tip pinch live a upwards tug, feel pliable but hard to break strong, take the wrinkles by finishing can disappear or are not obvious, so that the skin is good leather upper.

4. Look at the spring type and quality

In addition to leather, spring is also important. Because the spring is directly related to the soft hardness of the sofa, service life, and the most closely related to the comfort of the sofa. There are many types of sofa spring, different performance, you must be carefully asked to clear in the purchase.

5. Look at the filler

Filler mainly refers to sponge, sponges are divided into three types. Thwack sponge backrest and armrest portion, high elasticity and high elastic ultra- soft sponge do part of the seat, the high grade sofa cushion should use density in 30 kg / cubic meters of above high elastic foam sponge, back cushion should use density 25 kg / m3 high elastic foam sponge. As consumers can sit down and feel comfortable. Under normal circumstances, the human body to sit down after the sofa cushion to sag about 10 cm or so for the best. This is the same as all the other types of sofas to judge the quality of the filler.

6.look at the brand reputation and after-sales service

Looked at the five aspects of the quality of the front, consumers can basically choose the quality of leather sofa has a rough grasp of the level of. But for ordinary consumers as a layman, it is not enough to be sure that the quality of the sofa clearance. There are a lot of internal quality needs to be judged by the use of the future, consumers how to grasp the quality of these aspects of it. Personally think that only a reference to the credibility of the brand and after-sales service. So, we should try to choose the visibility and reputation of good production of sofa in the purchase. 

The difference to leather and fur

Leather, it is mainly formed by the mammalian skin process. Leather is by hair removal and tanning and other physical and chemical processing of the obtained have been denatured nonperishable animal skins. Leather is a natural protein fiber tightly woven in three-dimensional space formed on its surface has a special grain layer, has a natural grain pattern and gloss,feel comfortable. Usually there are leather clothing sheepskin, pigskin, cowhide and horsehide. China leather factory use animals surface to make many products.The main subdivisions: furniture leather ,decorative leather, decorative leather, soft leather bag, leather sofas, leather and other decorative sliding door.

Fur refers to the use of clothing made from animal skins. Used to make fur animals including rare animal rabbit, fox, mink, etc., is also a source of fur. Since the original period of human will to hunt any animal fur made clothes to cover the cold, or to promote their achievements. In modern times, fur has become a symbol of wealth.So many animals facing human hunting because of the fur trade.take the skin during feeding for animals, feeding and slaughter process adopted animals to suffer a lot of pain,thus,animal protects against fur trade and consumption.