Plastic packaging is the most common form of packaging, it has been widely used in various industries. Compared with paper packaging materials, plastic packaging has many inherent advantages, such as moisture, vacuum, low cost, easy to store, and so on, and because most of the plastic film material is relatively smooth and shiny, so plastic as a material color printing Packaging on appearance and more vibrant than paper packaging, gorgeous.
It is not that we can be able to freely mix colors printed plastic packaging design to achieve a beautiful effect? Many graphic designers are the final output of goods in paper as a material, the output process of offset printing, offset design on the color requirements are relatively relaxed, but the actual use of it more difficult to grasp, requires a lot of experience and a high degree of aesthetics. The plastic packaging is gravure printing, gravure offset design with respect to the design, the color requirements are relatively conservative and more limited by the technology, how to use a limited color design aesthetic and practical packaging, plastic packaging designers is a difficult problem that requires experience and reflection.
To understand the plastic packaging, we start to understand gravure printing. In the gravure printing, the print portion (the ink at) lower than a blank portion, all the blank parts are in a plane, while the print portion is recessed in a plane below the level of depression, along with the different shades of the image changes, dark tone image, the corresponding portion of the plate on the concave deep, shallow and vice versa. When printing, the printing plate roller rolling, printing rotation of ink in the ink tank painted version in under, and then use the squeegee device (usually a scraper) scrape off the raised ink on a blank portion, so that the recessed portion The ink is transferred to the print, thereby completing the printing.
Plastic according to its own performance points can be divided into: can repeatedly melt molding and thermoplastics can maintain its basic properties and thermosetting plastics into two categories only once melt molding. According to its use of points can be divided into wide use surfaces, cheap, better overall performance of general-purpose plastics, such as PE, PP, PVC, PS, and amino plastics have good physical and mechanical strength, may be used instead of metal construction machinery engineering plastics such as: ABS, nylon, polyester, POM, TPX-1 and the like. As well as having a particularly excellent performance in a certain class of engineering plastics, such as: having a particularly good radiation resistance, high temperature resistance and other specialty plastics, such as: polyarylsulfone, liquid crystal polymers. The thermoplastic resin molecular crystal size to points, can be divided into amorphous thermoplastic polymer and a crystalline polymer types.
The main properties of the plastic are: first, low density, high strength, you can get a higher yield packaging, namely "packaging unit mass or volume of packaging the size of the second, most plastics chemical resistance is good, there is. good acid and alkali resistance, various kinds of organic solvents, long-term placement, oxidation does not occur. Third, easy molding, forming energy required is less than steel and other metal materials. Fourth, good transparency, easy coloring Fifth, with good strength, high strength performance per unit weight, impact resistance, and easy modification. Sixth, low processing costs. Seventh, excellent insulating properties.
In synthesis, there are 25% for the packaging industry, for the plastic packaging industry an important sector, is one of the four plastic packaging materials packaging industry: paper and paperboard accounted for 30%, 25% plastic, metal accounted for 25 %, glass 15%. 25 percent more than two fully illustrate the importance of the plastic packaging industry. Although the plastic packaging industry is the second packaging material, in fact, not as good as with the surface of paper and paperboard packaging. But the plastic packaging industry rate of 5% annually in development, and other packaging materials, including paper and cardboard, metal, glass, pottery Wa, cotton, etc. only 2% rate of growth for this day plastic packaging industry more than paper and paperboard and became the first packaging material.
China modern packaging industry since the reform and opening up policy was implemented to develop rapidly. After three decades of development, China's packaging industry has become a paper, plastic, metal, glass, packaging, printing and packaging machinery and equipment as the main industry of independent, complete, complete range of industrial system and the Yangtze River Delta, Pearl River Delta, Central Bohai Bay for the packaging industry structure in key areas.
From the total amount of packaging industry, China is the largest packaging country, but not packaged power, performance capability of independent innovation is still weak, low value-added products, the value of the package is not yet fully reflected in the industrial chain. Low-level redundant construction, resulting in low-end products and high-end products overcapacity insufficient supply of contradictions, lack of development potential. China's packaging industry need to rely solely on the amount of growth, expanding production capacity development, to relying on scientific and technological innovation, technological progress, optimize the structural adjustment up, and enhance the core competitiveness of the industry development.
Related reading: clear plastic box Plastic folding carton
留言列表
