Early concave convex printing technology required a lot of time for printing plates, and the quality of the printed products could not be guaranteed. With the development of 3D software and laser engraving technology, concave convex printing technology has significantly improved the stereoscopic visual effect of printed products.
The concave convex process is to create a three-dimensional effect on the surface of paper that is higher than or lower than the plane of the paper through pre made carving models and pressure. Concave convex embossing, also known as embossing, is a process in which pressure is applied from the back of the paper to make the surface bulge, commonly known as “embossing”; Applying pressure from the front of the paper to make the surface concave is called “indentation”, which is a common technique in the post-processing of printed materials. Its main purpose is to emphasize a certain part of the overall design and highlight its important position.
This process first requires the production of a set of concave convex printing plates (male and female molds) based on the designed graphics. Using the high pressure of the convex printing press, a three-dimensional graphic is pressed out from the already printed partial graphics or blank areas, giving the printed product a three-dimensional effect. The entire structure also has rich layers, adding more and stronger artistic qualities.
The concave convex embossing process is an environmentally friendly technology, and its production process does not cause any pollution. It is widely used in the market. From high-end fashion products to business cards, concave convex craftsmanship has become one of the most common techniques in the printing, packaging, and graphic design industries.
Common printed materials include exquisite book and brochure covers, gift packaging, advertising flyers, posters, handbags, cosmetic outer boxes, envelopes and letters, children’s calligraphy and painting books, etc.
Concave convex embossing is also widely used in paper surface processing, and many manufacturers at home and abroad produce professional machines for paper processing The patterns are diverse and have a unique artistic effect.
Lukka Packaging was founded in 1970 and has been deeply involved in the field of printing and packaging for nearly half a century. It has always focused on customizing packaging color boxes, packaging cardboard boxes, packaging outer boxes and other products, serving tens of thousands of enterprises in home appliances, digital 3C, logistics and transportation, food, fresh agricultural products, toys and daily necessities.
