The types of paper bags can be divided into kraft paper bags, white cardboard paper bags, white paper paper bags, coated paper paper bags, and a small amount of paper bags made of special paper. Among them, kraft paper bag, high toughness, strong tear strength, often used for printing envelopes and shopping bags, the lowest price in white cardboard, white kraft paper and coated paper. The white cardboard paper bag is thick and smooth, and the color is full after printing, and the texture is delicate.
The coated paper is smooth and flat, and the printing effect is the same as that of white cardboard, but the stiffness is slightly lower. The market prospect of white kraft paper bags is the most promising, environmentally friendly, non-toxic and renewable, but not suitable for printing inks. Gray-white board paper, as the name suggests, is white on one side and gray, and the price is cheaper than white cardboard. Black cardboard, black and white inside, can make high-quality bags with hot stamping and hot silver. The paper bags can be divided into four types according to the different ways of the back cover: open-bonded corner bottom bags, valve-type flat hexagon end-end adhesive bags, open bottom bags, and valve-type stitching bags. Divided by purpose: medicine bags, gift bags, shopping bags, food bags, etc.
The environmental protection concept of paper bags is two. First, green, the plastic bag made of polyethylene is oil, oil is a non-renewable energy, and trees are a renewable energy source. Second, paper bags are not environmentally friendly. In the process of production, a large number of trees are cut down to destroy the ecological balance. Waste water and waste gas pollute the environment, and some oil-proof paper bags cannot be degraded.
As a new advertising carrier, paper bags are gradually accepted by enterprises and the public. The exquisite paper bags are favored by many fashion people in the city. It can be seen that the market prospect of paper bags is very optimistic.