What are the raw materials for producing paper bags?
As we all know, paper is a recyclable resource. The raw materials of paper making are mainly plant fibers,the raw materials contain three main components: cellulose, hemicellulose and lignin. The raw materials used in paper bags are renewable resources , which are degradable and recyclable .
The raw materials of paper rolls can be divided into: white cardboard, coated paper , white kraft paper, kraft paper , white board paper and special paper .
White cardboard: White cardboard has a thick texture, high hardness, breakage resistance , smoothness and a flat paper surface. Paper bags printed on white cardboard are full of colour and have a very good paper texture.
Coated paper: Coated paper is also known as printing coated paper. It is coated with a layer of white paint on the surface of the original paper and processed by super calendering.The coated paper surface is divided into two types: glossy surface and cloth texture. The glossy surface can be printed in various colors. The commonly used surface treatment processes are: spray glue, coat UV, hot stamping, etc. Moreover, the surface of the coated paper is smooth, high whiteness,has good ink absorption.
White kraft paper: White kraft paper is highly resistant to breakage, stable uniformity and thickness, environmentally friendly and non-toxic, can be reused. The toughness of white kraft paper is very good, the printing effect is clearer compared with other papers.It does not need to be laminated, is widely used to make environmentally friendly garment handbags and high-grade shopping bags, etc.
Kraft paper: Also known as natural kraft paper is usually brownish yellow. It has high tensile force, high toughness, high tear strength, rupture and dynamic strength. Mostly is rolled paper, also flat paper. Made from sulphate coniferous wood pulp, pulped and copied on a long net paper machine. It can be used as cement bag paper, envelope paper, glue seal paper binding, asphalt paper, cable protection paper, insulation paper, etc.
Gray-backed whiteboard paper: White board paper with grey background is a kind of paper roll with white and smooth front and mostly grey background on the back, commonly used from 250g to 350g thickness, mainly for printing and packaging.
Black cardboard: Black cardboard is a special type of paper that is black on both sides. Black cardboard has the characteristics of fine paper, firm and thick, good folding resistance, smooth surface, good tensile force and high burst resistance . Because black cardboard is black , it cannot be printed with colored patterns, is only suitable for foil stamping, silver stamping and other processes.
Papers of different materials are different in color, strength, bursting resistance, smoothness and printing effect. The raw materials for making paper bags should be determined according to the usage scenarios of the paper bags to better meet the needs of use.
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The last ,it is able to leave a deep impression on customers. Currently, paper bags are diversified in terms of design, color and aesthetics. Exquisite and luxurious paper bags will leave a deep impression on customers. On the other hand, when printing paper bags, the company's logo, information and address can be printed on the paper bags ingeniously. This is convenient for customers to contact directly when they buy again, also helps to promote the brand and expand its popularity.
MORE +Application market of paper bags
Paper bags are now widely used as they can be recycled and are not harmful to the environment even if they are discarded in the natural environment. At the same time, paper bags can play a very good role in publicity. Many companies will deliberately print their own brand names or logos when customizing paper bags , thereby increasing the brand awareness .It is because of these characteristics of the paper bag it can slowly occupy the market. Paper bag packaging applications are very wide, mainly focused on clothing, food, medicine and cosmetic fields..
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