The
printing methods are different, and the corresponding paper must be selected
according to the requirements and characteristics of the use and printing
process.
To
print an item, you must first clarify what paper is needed to display the
effect of the item as best as possible. There are many Chinese printers. They have a
professional printing team that can provide customers with a one-stop service
from paper selection to printing completion, binding and transportation. The
following is a detailed explanation of several classifications of book printing
paper by Chinese printer, I hope
it will be helpful to you.
Letterpress paper
Toppan
paper is the main paper used when printing books and magazines. It is suitable
for the main text of important works, scientific and technological books,
academic journals and textbooks of colleges and universities. Letterpress paper
can be divided into four levels: No. 1, No. 2, No. 3, and No. 4 according to
the different distribution ratios of paper materials. The number of paper
represents the quality of the paper. The larger the number, the worse the paper
quality.
Letterpress
printing paper is mainly used for letterpress printing. The properties of this
paper are similar to newsprint, but not exactly the same. The fibrous structure
of relief paper is relatively uniform, and the gaps between the fibers are
filled with a certain amount of fillers and sizing materials, and have been
bleached, which forms the paper has a better adaptability to printing. Although
its ink absorption is not as good as newsprint, it has the characteristics of
uniform ink absorption; water resistance and paper whiteness are better than
newsprint.
Newsprint
Newsprint
is also called white newspaper, which is the main paper used in newspapers and
books. It is suitable for text papers such as newspapers, periodicals,
textbooks, comic strips, etc. The characteristics of newsprint are as follows:
the paper is loose and light, has good elasticity, and has good ink absorption
performance, which ensures that the ink can be better fixed on the paper. After
the paper is calendered, both sides are smooth and lint-free, so that the print
on both sides is clear and full; it has a certain mechanical strength; it has
good opacity; it is suitable for high-speed rotary printing.
This
paper is produced with mechanical wood pulp (or other chemical pulp) as raw
materials, and contains a large amount of lignin and other impurities, so it is
not suitable for long-term storage. If the storage time is too long, the paper
will turn yellow and become brittle, have poor water resistance, and is not
suitable for writing. The printing ink or book ink must be used, and the
viscosity of the ink should not be too high. The moisture content of the plate
must be strictly controlled during lithographic printing.
Offset paper
Offset
paper is mainly used when printing higher-level color prints on offset (offset)
printing machines or other printing machines, such as color pictorials, picture
albums, posters, color printing trademarks, and some advanced book covers,
illustrations, etc.
Offset
paper is divided into special grade, No. 1, No. 2 and No. 3 according to the
ratio of paper pulp. There are single-sided and double-sided, and there are two
grades of super calender and ordinary calender.
Offset
paper has small elasticity, uniform ink absorption, good smoothness, tight and
opaque texture, good whiteness, and strong water resistance. Conjunctival
offset printing inks and better quality lead printing inks should be used. The
viscosity of the ink should not be too high, otherwise the phenomenon of powder
removal and fuzzing will occur. Also to prevent dirt on the back side,
generally use anti-dirt agent, dusting or interleaving paper.
Coated paper
Coated
paper, also known as coated paper, is made by coating a layer of white slurry
on the base paper and calendering it. The paper surface is smooth, the
whiteness is high, the paper fiber distribution is uniform, the thickness is
uniform, the flexibility is small, there is good elasticity and the surface is
smooth, the whiteness is high, the paper fiber distribution is uniform, the
thickness is uniform, and the flexibility is It is small, has good elasticity
and strong water resistance and tensile properties, and has very good ink
absorption and receiving state. Coated paper is mainly used for printing
picture albums, covers, postcards, exquisite product samples and color
trademarks. The pressure should not be too high when printing on coated paper,
and offset printing resin ink and bright ink should be used. To prevent dirt on
the back side, add anti-dirty agent, spray powder and other methods. There are
two types of coated paper, single-sided and double-sided.
Draw newspaper
The
texture of the painted newspaper is fine white and smooth, and it is used to
print pictorial newspapers, atlases and posters, etc.
Written
paper
Written
paper, also called book cover paper, is the paper used for printing book
covers. Written paper is made of paper with pigments, in gray, blue, beige and
other colors.
Embossed paper
Embossed
paper is specially produced and a kind of cover decoration paper. The surface
of the paper has a pattern that is not very obvious. The colors are divided
into gray, green, beige and pink, and are generally used to print monochrome
covers. The embossed paper is kneeling, and the spine of the book is easy to
break when binding. When printing, the paper has a large curvature and it is
difficult to feed the paper, which affects the printing efficiency.
Contact
us freely to know more about the details of cheap book printing service in
China.