PP Woven Tote Bag Weaving Process And Failure

Printing ink can be divided into two kinds: one is dedicated to the composite ink in India and then coated; the other is printed on the surface, such as: Tablets pearl film after coating composite, so that printing ink prone to solid Bad, some color easy to fade, discoloration, not easy to overlap a variety of ink. And printed in the printed products, re-processing of aluminum, such as: the use of transparent series of printing in India after the Indian plate has been bright and colorful patterns, and then coated laminating.PP Woven Tote Bag

Coating machine should be mixed with the coating material after melting evenly, the coating machine temperature is generally around 220 ℃, the temperature is too high will affect the physical properties, the temperature is too low also affect the peel strength, it should be based on their own equipment The optimum temperature is then applied to the braided substrate by double-die extrusion, and then cooled by a cooling steel roll to form a composite film on the surface of the woven fabric to achieve the desired effect.PP Woven Tote Bag

Coating material selection: one is high-density polyethylene (coating grade) is a low-density polyethylene (coating grade) and a special PP coating with the use of the current, the use of coating material model Ethylene seven A, ethylene seven B is more extensive. Coated coating is best controlled at about 15 grams per square meter. , The use of polyethylene and PP special material ratio is generally 4: 6, PP material will make the coating becomes more brittle. Composite pressure roller uneven or rubber pressure roller surface aging, hardness is inconsistent, the surface is not smooth, there are pits, scratches and other phenomena, resulting in can not maintain a constant value, so that coating can not even coating. To adjust the compound pressure. To determine the roller should not be promptly replaced to ensure that the roller surface hardness uniformity.PP Woven Tote Bag

When the substrate is deflected, it will cause wrinkles when the composite is applied, and the degree of wrinkling will increase as the skew accumulates. It is necessary to adjust the position of each substrate in the line, can not be skewed to avoid the occurrence of wrinkling phenomenon.PP Woven Tote Bag