The best choice of substrate is the key

2022-09-23
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Choosing the substrate is the key.

printers are often required to print on many types of substrates, and customers can only say that it is plastic, white, polymeric materials and other information when providing materials. Therefore, printers can only figure out what materials it is and choose the appropriate ink for it. The purpose of this article is to introduce common plastics and pop materials

styrene

phenethyl guaranteed quality alkene is widely used in indoor posters, which can be seen everywhere in retail stores and exhibition rooms. It can also be used to make bottles and packaging boxes. Styrene is a hard, brittle, thermoplastic material. It is sensitive to solvents. If excessive solvents are used, cracks will appear. Styrene with thin thickness can tear open, making a harsh sound. When a large roll of styrene vibrates, it sounds like thunder

styrene can also be identified by simple solvent testing. Styrene will soften in the presence of ketone and aromatic solvents. A few drops of version cleaner on styrene will soften significantly after a few minutes. Touching a softened surface with a gloved fingertip will produce fine plastic stripes. A few drops of aromatics can also soften styrene

styrene can also be identified by combustion test. When styrene is ignited, the flame is orange and crackles, releasing thick black smoke. When styrene is removed from the blowtorch, it will continue to burn

polypropylene

polypropylene is a thermoplastic rigid rigid material with good durability, which is suitable for making labels and flowering containers/bottles, packaging boxes and film mulching in many places in China. The common polypropylene is a grooved sheet with different shapes. The bottom of polypropylene container is marked with recycling mark Code5 or PP, and other products such as cups and pens are not marked with recycling mark

polypropylene is cut clean, can float in water, and can be bent repeatedly without tearing or damage

because polypropylene is very solvent resistant, the solvent test cannot explain anything. Combustion tests can provide a lot of information. The flame is blue and yellow without any smoke. When the polypropylene is removed from the blowtorch, it will continue to burn. The softened plastic is transparent. Like other polyolefin polymers, polypropylene has no ignition point, and the flame of polypropylene combustion cannot spread quickly

polyethylene

polyethylene is commonly used in containers, solvent resistant water pipes and packaging boxes. It also has a single sheet form. There are many types of polyethylene: high density, low density is the key link, hard leaflets, flexible polyethylene for flags, and so on. Substrate suppliers generally provide roll and sheet polyethylene

polyethylene is light, strong, especially solvent resistant, and has a waxing feeling, which makes it distinguishable from polypropylene. Polyethylene sheets stretch before tearing. Polyethylene, like polypropylene, is also cut clean and can float in water. The results of solvent and combustion tests are exactly the same as those of polypropylene

in order to obtain ideal CD and DVD discs, which are one of the most potential markets, ink viscosity, appropriate printing treatment is essential. Container decorators conduct flame treatment on bottles online before printing, and flag printers usually pretreat materials with corona discharge

ethylene

ethylene substrate is the most widely used plastic in plate printing, which can be used for signs, stickers, decals, bottles, labels, advertising posters and so on. Pressure sensitive ethylene, electrostatic ethylene, rigid PVC, expanded PVC board, ethylene flag material, polished ethylene, friction resistant ethylene and many other types are common to plate printers. Ethylene can be roughly divided into flexibility and hardness, which can be subdivided according to the purpose of use

flexible ethylene includes oil-containing flexibility agent, which makes the material flexible and flexible. The flexibility agent contained in ethylene is not a strict component of ethylene. Whether there is a flexible agent can usually be detected by smell, and it can also be seen from the oil film on its surface that the smell of many flexible agents is discriminative and sweet to many people. The longer the life of ethylene, the stronger the smell of flexibility agent. Hard vinyl has no flexibility, so it has no smell

ethylene softens with cyclohexanone instead of aromatic solvents. Flame test ethylene shows a bright green flame, emitting dirty black smoke. It goes out immediately when it is removed from the fire. Vinyl film is difficult to tear and clean when cutting

polycarbonate and polyester

polycarbonate and polyester film are generally used for membrane switch panels, instrument panels, labels and nameplates. Both materials are transparent and frosted. There are important differences between polycarbonate and polyester. It is important for printers to distinguish them, because their differences will affect printing, die cutting, embossing and other operations

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