Do you know the classification of paper bags?

White card paper: white card paper is firm and thick, with high stiffness, break resistance and smoothness, paper surface is smooth, the commonly used thickness is 210-300 grams of white card, the most used is 230 white card. Paper bags printed with white card paper, full color, paper texture is very good, is your custom first choice.

Copperplate paper: copperplate paper is characterized by very smooth and flat paper surface, high whiteness, high smoothness, good gloss, and also makes the printed graphics and pictures have a three-dimensional sense. The commonly used thickness is 128-300 grams. The printing effect of copperplate paper is the same as that of white card paper, with full and bright color.

White kraft paper, white kraft paper, burst degree is high, good toughness, high strength, evenness thickness as stability of color, in accordance with relevant state regulations limit the use of plastic bags, supermarket and foreign countries, the trend of Europe and the United States and other countries advocates environmental protection bag, strict control of plastics pollution, plastic bags will be replaced by environmental paper bag, white kraft paper, market prospects look good. 100% pure wood pulp manufacture, environmental protection non-toxic, environmental protection and recycling, white kraft paper toughness is very good, and do not need to cover film, widely used in the production of environmental protection clothing handbag, high-grade shopping bags. Commonly used thickness of 120 grams -200 grams of white kraft paper, paper without brightness and gloss, white kraft paper is not suitable for printing ink is too large content.

Kraft paper: also known as brown kraft paper. High tensile strength, high toughness, usually brownish yellow color, high tear strength, rupture and dynamic strength, widely used in shopping bags, envelopes, etc. Commonly used thickness of 120 grams -300 grams of natural kraft paper. Kraft paper is generally suitable for printing monochrome or two-color and uncomplicated manuscripts. Relative to white card paper, white kraft paper box coated paper, yellow paper the lowest price.

White board paper: white board paper is a white and smooth front, the back is mostly gray board, the commonly used thickness is 250-350 grams, white board paper is white on one side, gray on the other side, the price is a little cheaper than white board paper.

Black card paper: it is a special paper, black on both sides. Black card paper is characterized by delicate paper, penetrating black, firm and thick, good folding resistance, smooth surface, good stiffness, good tension, high breaking resistance. Commonly used thickness of 120 grams -350 grams of black cardboard. Because black card paper is black inside and outside, so can not print color patterns, only suitable for bronzing, silver stamping and other processes. The bag is also very beautiful.

According to the bag edge, bottom and back sealing methods are different: there are four types of paper bags: open seam bottom bag, open adhesive corner bottom bag, valve type suture bag, valve type flat hexagonal end bottom adhesive bag.

According to the handle and the way of digging: NKK (drilling rope), NAK (no hole rope, divided into no mouth folding and standard mouth folding type), DCK (cordless bag body digging handle), BBK (tongue mouth does not punch).

According to the use of different: including file bag, envelope, handbag, cement bag, feed bag, wax paper bag, fertilizer bag, film paper bag, four paper bag, medicine bag, clothing bag, food bag, shopping bag, gift bag, wine bag. Different uses, the design specifications, including the thickness of paper bags have many requirements, so it is necessary to customize according to the actual situation, to achieve twice the result with half the effort, the purpose of economic application, for material reduction and saving, green environmental protection, enterprise capital investment, provide more guarantee.