廣告
Handbag, as its name implies, is a bag for holding articles and carrying them easily. Its load-bearing function determines its material and form. According to the materials used, it can be roughly divided into paper handbags, plastic bags, cloth bags, small baskets and baskets in a wide sense. The most common and frequently used bags should be paper composite bags and plastic bags, followed by cloth bags, small baskets and baskets are rare in metropolitan areas.
Paper bag
Paper handbags are mostly made of heavy kraft paper, white cardboard, white cardboard with grey background, white cardboard with white background and copper cardboard, which are printed, die-cut, bonded and formed by offset press. Due to the modernization of printing technology and equipment, the printing pattern is very exquisite, delicate and rich in forms. All the processes in modern printing can be displayed on a small handbag, such as hot stamping, concave and convex, UV, die cutting profile, etc.
Due to the difference of materials, kraft paper has better stiffness and toughness, rough surface, and with background color. It is not suitable for 4-color printing. It only does some monochrome printing, but also does not need to cover the surface. Its production cost is about 1.5 yuan (opposite). Careful attention should be paid to the use of good quality glue in the bonding process of kraft paper handbags, otherwise the phenomenon of bottom piercing and bursting will occur. At the same time, kraft paper handbags will degum if they are placed too long. White cardboard, grey-bottom white cardboard, white-bottom white cardboard and copper cardboard all have a common feature, the surface is delicate, are white, suitable for four-color printing, can print very beautiful patterns, because of the paper's own toughness and water-proof characteristics, usually after printing, the surface is coated (BOPP film, also known as biaxially stretched polypropylene film, called paper-plastic composite bag. Close the bag, increase its toughness and water resistance, the handbags after film coating will not degum generally. Its production cost is 1.3-2.0 yuan. Copper cardboard handbags have the highest cost, followed by white cardboard handbags, white cardboard handbags with grey bottom and white cardboard handbags with white bottom.
Plastic bag
According to the materials used, plastic bags can be divided into ordinary plastic bags and degradable plastic bags. Generally, the thickness of plastic shopping bags provided by farmers'markets is about 0.005 mm. The thickness of plastic shopping bags provided by large supermarkets and shopping malls is generally between 0.015 mm and 0.020 mm. At present, more than 80% of the thickness of plastic shopping bags in the market can not meet the national plastic limit standard of 0.025 mm or more. After plastic restriction, plastic shopping bags are paid for in supermarkets and shopping malls, and degradable plastic bags are also used in shopping malls.
Cloth bag
Cloth bags can be divided into textile and non-woven fabrics according to whether the materials used are textile or not. Textile fabrics are divided into vegetable and chemical fibre fabrics and blended fabrics; nonwoven fabrics, also known as NonWoven in English, are non-woven fabrics, which directly use polymer chips, short fibers or filaments to form a network through air flow or mechanical, and then through spunlace, needle punching or hot rolling reinforcement, and finally through finishing to form non-woven fabrics, which are soft and transparent. Compared with cotton fabrics, non-woven bags are easier to form and cheaper in cost.
Textile bags are mostly made of cotton, canvas, polyester, cotton and Oxford fabrics. These fabrics have rough surfaces and can not be printed directly and finely. They are mostly screen printing or transfer printing. At the same time, because of the high price of raw materials, the handbags produced are also more expensive.
Small baskets and baskets
Small baskets and baskets are made of bamboo, wood and rattan. They are usually handicraft products with strong and durable properties. They are expensive and not portable, and their output and usage are not large.
