Paper bag is open end, made of paper or paper composite flat tube container. Birthday paper food box is in the packaging use after major types of corrugated rigid paper box, its wide birthday paper food box application, variety, widely used in the transportation of goods packing and sales packing. Paper bags has the advantage of simple and cheap, carrying convenient to carry, transport and the lowest price, also can prevent pollution, and is suitable for packaging of food and scattered goods, clothing; Paper bag outside surface comfortable sex good, good for advertising; A reusable bag, waste paper bags easily recycled and processing.

Birthday paper food box from the shape can be divided into the envelope type, flat bag six-party bottom, square bottom bag, bag, M folding and portable square bottom bag, etc., its sealing methods mainly include bonding, stitching, nail needle tape sealing, sealing and thermal sealing, etc.

The main manufacturing birthday paper food box are sticking and sewing two. Paper material with the most is the sack paper and craft paper, including all kinds of elastic sack paper food box and reinforcement sack craft paper. In addition, still can choose according to need of bleaching, half bleached, additive of sulfate pulp manufacture birthday paper food box with pulp strength of paper and cardboard and processed by coating has the function such as waterproof, moisture proof, prevent infiltration and insect-resistant processing paper. And the material such as paper, plastic, asphalt, fabric composite processing of birthday cosmetic packaging box composite paper manufacturing high-strength waterproof paper bag paper bag and other special purposes

Ordinary goods bags, mainly USES the rotary printing chocolate packaging box to complete production. The production methods of high production efficiency, but its drawback is obvious, is rough paper bag is not fine. And delicate shopping bag, more is to use sheet-fed, then color printing, decorating paper food box after PP light or hot stamping. Then by paper bag factory manual or semi-automatic machine production, usually using artificial lacing, knot as carry, and then completes the production of paper bags. The advantages of this shopping bag are: can be made into any shape paper carrier bags. But this kind of mode of birthday paper food box production, the production efficiency is low. This type of paper bag is used to nobler, commodity packaging as a gift bag. Delicate and beautiful, of course, portable paper bag has become the ladies shopping convenience shopping bags.

Laptop bag is now the first selection of shopping bags. At the same time or the extension of corporate image and product advertising and at the time of making shopping bags, besides exquisite birthday cardboard gift box structure tightly, not to take off the bottom, also the pursuit of environmental protection and beautiful, delicate and durable.