Formation of natural leather

For natural leather, the
conditions for the formation of leather mainly include the coating of surface
and surface leather. For leather, natural leather has more formation methods
and skills.

In terms of natural leather,
the thick cow leather with cooked leather has 5 ~ 6mm, which is mainly the
surface layer of grain surface layer, and the tissue fiber is relatively
compact and meticulous, and the strength, beauty and wear resistance are
relatively good; The inner layer of the pile layer is mainly the pile layer
with large gap, thick fiber and fluff on the surface. The surface of the first
layer leather is more flat and smooth than that of the second layer leather,
and it is slightly rough for the second layer leather. Through film transfer or
coating and film transfer, it can not see any roughness on the surface, but the
film transfer leather will be relatively poor in low temperature resistance and
easy to wrinkle at relatively low temperature. In terms of flattening, cowhide
split leather generally shows no great defects after embossing, but pigskin
split leather can vaguely see three piles in pores and eyes, and the luster can
often see the phenomenon of darkening there. We should always pay attention
when we distinguish the front leather from the shaving leather. The original
grain layer is mainly the shaving leather, but the pressed patterns can imitate
sheep, cattle, pig skin and so on. However, in terms of patterns, there are
generally no pores, and in terms of patterns, they are mainly suspended on the
surface of this layer of skin. From the front, leather pores mainly exist, and
can be identified by careful observation.

Almost 90% of the leather
will have more or less problems after losing the surface coating. For problems
such as concave convex surface, rough pores and scars, we will want to turn it
into leather with use value, and many process technologies can be used for
beautification, and dyes, pigment paste and film-forming agent can be coated
and leveled. And in terms of finishing, it can mainly give special optical
effects to leather. In this case, the leather that is painted and repaired is
called finishing leather. Leather shoes that have been decorated or made with
coated leather are collectively referred to as coated leather shoes. Painted
Leather does not mean low-grade leather. For a variety of footwear, it is
generally required to use Painted Leather to achieve the physical conditions
that can be achieved by the shoe itself.

For genuine leather, its
leather surface mainly has its own special natural patterns, and the leather
surface has natural luster. When you pinch or press the leather surface, the
leather surface can have no cracks or dead wrinkles; For the leather surface of
artificial leather, although it will look like real leather, the pattern will
not appear very natural under closer inspection. In terms of gloss, the real
leather is relatively bright and mostly bright in color. When pressing the
leather surface, there are no obvious wrinkles and pores on the fingers, and it
will not suddenly disappear even after wrinkles appear after pressing.

With the development of
science, the performance of synthetic leather will be closer to natural
leather, but it can not always reach the index of natural leather. The last
reason is that the nature of leather comes from life science. For life, animal
skin occupies a part, and the mystery and depth of life science can no longer
be imitated by general chemistry and physics. In addition, users will have
special psychological value when using leather products, mainly masturbation
and ostentation. In terms of psychological feeling, it is basically the same
for gold rings and copper rings. With the improvement of the quality of life,
the demand for leather will show an increasing trend, and it is impossible to
decline. For this, the leather industry is called “the sun never sets
industry”.