Flexible preprinting cardboard box, production method and production equipment thereof

Abstract

The invention discloses a flexibly pre-printed paper box, a manufacture method and a manufacture equipment thereof; the paper box has a box body consisting of a printed sheet, corrugated paper, inner paper and in some cases core paper; color patterns on the printed sheet are flexibly printed on the printed sheet before the paper box is manufactured. The manufacture method consists of a manufacture method of flexibly printed paper sheet and a manufacture method of the paper box; firstly the color patterns are manufactured on the printed sheet with a rotary flexographic press; then bright oil is applied, and then the printed sheet, the corrugated paper and the inner paper are made into the paper box by adopting a corrugated paper manufacture device; some paper box also comprises the core paper. The manufacture device consists of the rotary flexoographic press, the corrugated paper manufacture equipment and a die-cutting machine. Adopting the method and the equipment of the invention, the manufactured paper box is green and environmental protective, nice in printed patterns, high in compressive strength, convenient in lifting and low in reject rate; compared with paper boxes which are printed with offset printing and directly with flexible plate of the same quality requirement, the paper box of the invention has lower cost.

Description

1. Technical field [0001] The invention belongs to a carton and its manufacturing method and manufacturing equipment. 2. Background technology [0002] With the development of the industry, market changes and increasing consumer demand, the function of corrugated boxes has developed from a purely protective function to beautifying and promoting products and improving product value. People are more and more aware of the importance of packaging printing for promotion and value-added, and subsequently put forward higher and higher requirements for the quality of packaging printing. [0003] At present, corrugated box printing mainly adopts offset printing and flexographic direct printing. [0004] Offset printing is to combine corrugated paper and inner paper into a single-sided corrugated cardboard, and then laminate the offset-printed face paper on a single-sided corrugated cardboard to make a carton. Sheet-fed offset printing has exquisite graphics and abrasion resistance ...

AI Technical Summary

Problems solved by technology

Sheet-fed offset printing has exquisite graphics and abrasion resistance after lamination, and is widely used in the production of high-end color cartons and cartons. However, the further development of offset printing is restricted due to the following problems: (1) The use of solvent-based inks containing toluene, Volatile organic solvents such as gasoline and ethyl acetate are toxic and flammable, causing pollution to the human body, packaged goods and the environment

(2) After printing, the plastic film that is difficult to degrade is covered with film adhesive, which increases the pollution of the environment and the difficulty of recycling, which does not meet the requirements of environmental protection.

(3) The production process is complicated, the production cycle is long, and it cannot meet the requirements of large-scale and rapid delivery

Flexo printing uses water-based ink, which is green and environmentally friendly, but because it is printed directly on corrugated box boards, the paper surface has poor flatness, printing accuracy is not high, and the printing process will reduce the strength of the cardboard

Although it is widely used in domestic carton manufacturers, it is difficult to meet customers' increasingly high requirements for packaging cost and printing and packaging quality.

[0006] In addition, several domestic carton factories choose the method of gravure printing carton surface paper, but it has not been promoted due to large investment in equipment, high cost of plate making, long cycle time, and the use of solvent-based inks to pollute the environment.

Some carton factories use screen printing, which has low precision and small output, and is not suitable for mass production

Images