Energy curing ink
Energy-curable inks use UV light or accelerated high-energy electron beams (EB) to polymerize the monomers in the ink into a polymer. Currently, energy-curable inks mainly include UV inks and EB inks.
Compared with common inks, the main advantages of energy-curable inks are: they do not contain harmful VOCs to the human body and the environment, do not pollute the environment, have fast drying and curing speeds, consume less energy, and have a large cross-link curing density, and a degree of cure of 100%. %, can be printed on a variety of substrates, with excellent mechanical properties and physicochemical properties. Therefore, once energy-curable inks are available, they are sought after by the market.
The UV ink is mainly composed of a prepolymer resin, a diluent monomer, a photoinitiator, a photosensitizer, a photosensitizer, a polymerization inhibitor, and a pigment. UV inks mainly include offset UV inks, letterpress UV inks, gravure UV inks, screen printing UV inks, UV inkjet inks, and UV printed circuit board inks.
The environmental protection of UV inks is only relative to the ordinary printing process, and there are also many problems.
(1) Some components of UV inks come in contact with the skin and may cause some irritating effects and may even cause skin irritation.
(2) UV light has some damage to the human body.
(3) The cured ink layer is very hard to degrade due to the high density of cross-linking, and the ink residue is also difficult to handle.
For this reason, people are actively researching and developing water-based UV inks and expect to solve the problems existing in UV inks.
EB ink is a kind of ink with great development potential. It can be used for web offset and flexo printing. Compared to UV inks, they do not use photoinitiators, have no odor, do not release ozone, do not require cold curing of the heat source, and are not affected by the color of the ink during curing. The curing is more thorough and the quality is more stable. However, the high cost of EB ink curing equipment is the biggest obstacle in the promotion and application. At the same time, EB inks also have degradation problems after they are discarded.
At present, most of the inks used for gravure printing contain benzene solvents. Due to volatilization, the exhaust gas emitted by gravure printing is a major source of pollution in the packaging and printing industry. Although water-based gravure inks have been received as a substitute for solvent-based gravure inks and have received high expectations, the water-based process of gravure inks is still slow.
Source: PCB Network City
Outdoor furniture refers to furniture used for outdoor environment, mainly used for outdoor leisure, entertainment and dining activities. The classification of outdoor furniture can be divided according to the material, function and shape.
First, classification by material
1. Wooden outdoor furniture: Wooden outdoor furniture is usually made of natural wood, such as teak. Wooden furniture has a natural, rustic character and is suitable for outdoor Spaces such as gardens, terraces and courtyards.
2. Metal outdoor furniture: Metal outdoor furniture is usually made of iron, aluminum, stainless steel and other metal materials. Metal furniture has the characteristics of durability and stability, suitable for long-term use in outdoor environment.
3. Cloth outdoor furniture: Cloth outdoor furniture is usually made of waterproof, sun protection and other special treatment of fabric. Fabric furniture with soft, comfortable characteristics, suitable for use in outdoor leisure areas.
Second, Classification by function
1. Leisure Chair: Leisure chair is the most common kind of outdoor furniture, usually used for outdoor leisure, sunbathing and other activities. There are a variety of leisure chairs, folding chairs, recliners, rocking chairs and so on.
2. Dining Table And Chair: Dining table and chair are mainly used for outdoor dining, usually consisting of a table and several chairs. Dining tables and chairs of various styles, there are round tables, square tables, etc., suitable for different venues and the number of people dining needs.
3. Parasol: Parasol is used for outdoor shading, which can effectively block direct sunlight and provide a cool resting environment. There are various styles of sunshade umbrellas, including ordinary umbrellas, large umbrellas, and rotating umbrellas.
Third, Classification by shape
1. Chairs: including ordinary chairs, rocking chairs, recliners, etc., suitable for outdoor leisure and sun.
2. Table category: including dining table, coffee table, side table, etc., suitable for outdoor dining and placing items.
3. Sofa category: including single sofa, double sofa, combination sofa, etc., suitable for outdoor leisure and parties.
4. Reclining chairs: including hammocks, reclining chairs, etc., suitable for outdoor naps and rest.
5. Queue class: including benches, benches, etc., suitable for outdoor queuing and waiting.
In summary, the classification of outdoor furniture can be divided according to material, function and shape. Different outdoor furniture is suitable for different outdoor environment and activity needs, choose suitable outdoor furniture can provide comfortable and convenient outdoor life experience.
Outdoor Table,Rattan Table,Rattan Chair,Beach Furniture
Foshan Shengshi Zhihui Technology Co., Ltd. , https://www.sshotelfurniture.com