UV offset and UV flexo printing

UV offset printing and UV flexo printing

UV offset and UV flexo printing is the main difference between the ink road, ink and plate technology.UV offsctdruckereien due to a long ink road, up to 16 rollers, fountain system, as well as ink tank, need a little more automatic control process.UV flexo printing because of the ink road process is simple, only a relatively simple manual adjustment.

On the other hand, especially those using digital imaging version requires high quality printing, UV flexo printing production costs significantly increased.UV offset and UV flexo printing in special printing requirements have their advantages and disadvantages.There is no clear “winner”, only the most appropriate process to adapt to different needs.

In the printing range, UV flexo printing, more unique advantages.It can be glazing, printing metal color, can transfer 1 to 1 2 micron ink layer, can almost simulate the screen drum printing touch effect.At the same time, it can handle extremely fine gradient and printing process.UV offset ink transfer is limited to about 2 microns, so its high quality printing advantages can not be extended to all printing processing.

But because of the short ink path, UV flexo printing than UV offset printing faster conversion, modern UV offset printing unit can be more automatic cleaning of multiple printing units, greatly reducing the conversion time.

UV flexo printing can provide better self – visibility than UV offset printing, especially in bright colors, strong contrast color (contrast color).

UV offset printing still retains its solid advantages, not only in the printing quality gap, but also more simple, can achieve better quality requirements.If high quality processing is required, the plate source is easier to meet the requirements, printing variables more standardized.UV offset printing can be more easily, more cost – effective to achieve high – quality printing requirements.

Modern UV offset printing unit EPN XpanndTM provides a fast transfer printing combination, with low speed setting, rapid response of modern printing presses, such as officer, l – Combat and Xpanned in standardization of global or regional environment, have the computer intelligence technology, makes the UV offset printing and UV flexo also in repeated processing efficiency, because most of the variables are controlled by computer.In some simple configuration, UV flexo printing has obvious advantages.

The limitation of UV offset printing in repeated length size is not flexible, this is because of the printing unit of high value and larger size.Although label printers have shown from practical experience that rotary presses can use four to five sets of repeatable length sizes, that is enough to cover most of today’s needs.UV flexo printing can print any repeated length size, the investment cost is very small.

Wet offset printing is the most common process in the printing industry today.The basic principle is to use the ink balance between the printing area (printing ink) and the non-printing area (water) on the plate.The key is to maintain ink balance and stability and control.Anhydrous offset printing USES a silicon coating on the printing plate to remove ink from the non-printing area. The balance control also eliminates the use of water as a medium.Does not use water to print, making waterless offset printing dot sharper and better display.Waterless offset printing has the potential to achieve higher line number and contrast.Wet offset printing is more compatible than anhydrous offset printing.Water can be seen as cleaning the plate, ink road, a bit like in printing self-cleaning function.In anhydrous printing plate, dust and confetti can damage the silicon coating of anhydrous offset printing, making the requirements of substrate selection and clean working environment more demanding.

In general, waterless offsctdruckereien requires more maintenance and operator skills.Even small mistakes in the process can make a big difference in the quality of printing.

Printing ink temperature problem, has been the development of technology for many years.Waterless offset printing is still a very complex process, each process requires perfect control, to achieve high printing quality.

At printing speeds above 1 m/min, wet offset printing requires cooling rollers, and the amount of heat accumulated in the printing unit may affect the performance and density of the ink.

Waterless offsctdruckereien at any printing speed requires cooling rollers and ink coolers, as well as cooling plates in the center of the rollers.Because the temperature of the ink is very sensitive to control the quality of printing.Ink temperature limit in a very narrow range, only 3-4 ℃, higher or lower than the temperature, the ink becomes unstable and printing quality will be affected.In order to achieve better control printing effect, the factory needs air conditioning temperature control.

Offset printing is the most demanding process for mechanical components.When flexo printing only requires a limited printing pressure, offset printing requires a lot of pressure on the plate roller, in order to transfer the ink.Offset printing unit, assembly, and firmness, as well as ink road design and ink management system, will affect the final printing quality.

Most offsctdruckereien heads on the market can achieve acceptable printing quality at speeds of 30 to 40 meters per minute.To over 50 meters per minute machine speed, in order to get a good quality printing.The Xpannd offset head provides continuous high quality printing at a printing speed of 12 m/min.In the setting of a small amount of waste, and flexo printing process is very close.

The ink path of all parameters can be controlled by the calculator interface, and the ink management system can be remotely adjusted by the automatic control servo from the main control surface. The ink parameters can be stored and repeatedly called for use in the repeated processing, or the setting basis of the new processing can be based on this.In Settings, waste and time can be greatly saved, and all ink parameters are controlled, and can be copied!

Features of Indirect Printing

Features of Indirect Printing

Indirect printing refers to the printing method in which the substrate does not obtain the image and text directly from the plate, but firstly transfers the image and text of the plate to the third medium, and then the substrate obtains the image and text from the third medium.Such as lithography offset printing method, that is, indirect printing.

(1) low printing pressure.As a result of the use of a good elastic blanket as a transfer ink intermediate,it do not need too much pressure to complete the ink transfer.Less pressure, less loss to the machine.

(2) printing plate wear light.The paper is not directly contact with the plate, but through a good elastic blanket and plate contact, reduce the plate wear, it is conducive to improve the printing plate resistance.

(3) good adaptability to paper. Because the blanket has a good elasticity, so that offset printing can not only print smooth paper, but also can print more rough paper.

(4) reduce the paper size deformation. Because the paper is not directly in contact with the plate, the paper absorption of water, reducing the paper’s moisture absorption elongation, it is conducive to over printer accurate.

What is the difference between a blow molding process and an injection molding process?

The blow molding products are all hollow; because of the injection molding port, the molded product will have a small and unnecessary part, and there will be a process to cut it off, but if you look carefully, you can still find it; Injection molding is a method in which a thermoplastic or thermosetting molding compound is first uniformly plasticized in a heating cylinder and then pushed by a plunger or a moving screw into a cavity of a closed mold.


Injection molding is suitable for most of thermoplastics. In recent years, injection molding has also been successfully used to form certain thermoset plastics. Injection molding has a short molding cycle, and the quality of molded products can range from a few grams to several tens of kilograms. It can form molded articles with complex shapes and precise dimensions with metal or non-metal inserts at one time. Therefore, the method is highly adaptable and has high production efficiency.


Blow molding: A method in which a hot parison closed in a mold is inflated into a hollow article by gas pressure, or a tubular parison is inflated into a tubular film. This method is mainly used in the manufacture of various packaging containers and tubular membranes.


IMelt blown index of 0.04~1.12 is a relatively good hollow blow molding material, such as polyethylene, polyvinyl chloride, polypropylene, polystyrene, thermoplastic polyester, polycarbonate, polyamide, cellulose acetate and poly An acetal resin or the like in which polyethylene is most used.

Injection Blow Molding: The plastic is first made into a bottomed parison by injection molding, and then the parison is moved into a blow mold to be blown into a hollow product.

Extrusion blow molding: The plastic is first made into a bottomed parison by extrusion, and then the parison is moved into a blow mold to be blown into a hollow product.

Stretch blow molding: Stretch blow molding is a blow molding of biaxially oriented stretching by first stretching the form longitudinally and then inflating with compressed air to achieve transverse stretching. Stretch blow molding can greatly improve the transparency, impact strength, surface hardness and rigidity of the product, and is suitable for blow molding of polypropylene and polyethylene terephthalate.

Blown film method: A method of forming a thermoplastic film. The plastic is first extruded into a tube by extrusion, and then continuously expanded to a tubular film of a certain size by air blown into the tube, and then folded and wound into a double-layer flat film after cooling.

Bottle packaging personalization is the trend

Bottle packaging personalization is the trend

With the development of artificial intelligence and all kinds of new technology during recent period of time, more and more new ideas and technology began to impact the traditional industries such as cosmetics. For cosmetics, The sale way already changed from the traditional counters to online sales then to derivative areas, and in the present, it is still in the changing constantly. personalization will become a trend in the future, which is inseparable from the packaging customization of cosmetic plastic bottle.

Therefore, in the future, with the increasing demand for customization of cosmetic plastic bottles, the cosmetic plastic bottle industry will face new changes. For those who do not have design capabilities, they will face shuffle and elimination, which is inevitable.

According to the change of trend, this trend is inevitable for cosmetic plastic bottle enterprises, so it is very important to try to embrace and change the changes in the future on the basis of the market.

What plastic bottle does silicone oil free shampoo use

When people are shopping for a new shampoo product, they are generally learning more about its ingredients, efficacy and technology. Shampoo products from the regular effect of original anti-dandruff, anti-dandruff, repair damage, anti-hair loss and so on to a more in-depth silicone oil free products.

Silicone free “is not only to remove the silicone oil, but also should consider consumer interests and enterprise sustainability. The connotation of “silicon free oil technology” includes: surfactant used for low-stimulation cleaning, adjuvant used to replace silicon oil, effective ingredients for scalp care.

For the high-tech, high-quality and concentrated shampoo products newly developed in recent years, people will have a good experience when using it, and naturally they will notice the package of this shampoo, namely the plastic bottle of this shampoo, which is made of what material.

With a brief introduction, the plastic bottle for this shampoo must be high-end, environmentally friendly and has good sealing performance. The material is usually PET and PE.

What kind of transparent plastic bottles are available in the market?

Transparent plastic bottles on the market are mainly made of PET, PP, PVC and ABS

PET is hard, good toughness, high strength, bright surface, environmentally friendly and non-toxic.PET is transparent and comes in a variety of colors.


The disadvantage is that high cycle heat bonding is relatively difficult and the price is slightly more expensive than PVC. This material is often required to be replaced by high-grade and environmentally friendly users. PET material is generally used to make plastic bottles for packaging food, beverage and medicine industries normally before. But now more and more cosmetics brands like to choose PET packaging as their bottle containers.

PP material: Special soft material, good toughness, environmental non-toxic and high temperature resistance, often made into food and beverage utensils or other high-temperature products packaging; But its plasticity is poor, the processing difficulty is big, the surface glossiness is poor, and the color can change when processing,which are mostly used to make one-time plastic bottle.


PVC material, It is soft, strong and plasticity. It can be made into transparent and various colors.

ABS material, Most ABS are non-toxic and impervious to water, but slightly water vapor, low water absorption, room temperature immersion of less than 1 percent a year and physical properties do not change.ABS resin product surface can be polished, can get high gloss products.It’s three to five times stronger than regular plastic.

Why a sachet of shampoo is cheaper than a bottle of shampoo

Some one will ask us why a sachet of shampoo is cheaper than a bottle of shampoo? Here are the reasons

1, Cost of packaging: With regard to the same capacity and same product. the cost of a bottle is higher than that of a sachet.

2, Usage: Sachet packaging is normally small.It is widely used for disposable usage.It is a good packaging for promoting the real products.In other words, a bottle of shampoo is the final product itself after testing the sachet.

Sometimes, the sachet packaging is free of charge, as a promoting gifts of sample.

Acrylic bottle packaging needs more room for development.

Acrylic bottle packaging needs more room for development.

Acrylic bottles, the largest market lies in the field of cosmetic packaging. We found that, in addition to the cosmetic packaging market, only health care products packaging uses some acrylic packaging.

It can be said that in many markets, we almost can not see the acrylic bottle. Because the material is plastic, easily crushing, while the lower cost and has the appearance and effect of glass bottles, which are widely welcomed by the cosmetics packaging market.
However, in addition to the cosmetics market, acrylic bottles in the food, beverage, pharmaceutical and other areas do not have much market space, which is acrylic bottle packaging needs more room for development.

Why most plastic bottles are in round shape?

Why most plastic bottles are in round shape?

Today, Most of the plastic bottles are round, only some beverage plastic bottles are square.In fact, The plasticity of plastic bottle is very strong, It not only can shape up the common variety of plastic bottle shape, but also can customize special variety of bottle shape. This is the advantage of plastic bottles that simply created by a pair of mold.

However, Some people would ask why the plastic bottles on the market are mostly round? In fact, That is because the circular plastic bottle is easy to catch, easy to carry, and does not take up space during the transportation.
This is why plastic bottles can quickly squeeze out the market share of glass packaging. We hope we will improve the round plastic bottle into another good level.

The changes of cosmetic bottle packaging

The changes of cosmetic bottle packaging

The trend of cosmetic bottle packaging has changed a lot in recent years. In the past, cosmetic manufacturers, which have always attached importance to offline channels, are placing great emphasis on the appearance of cosmetic bottle packaging. Both materials and appearance of the cosmetic bottle are valued by the manufacturers and distributors.

However, in the e-commerce market, cosmetics are the most affected. For online cosmetics bottles, left the off-line counter lighting, and pay more attention to the practicality. Therefore, the cosmetics market over the past two years turned to be simple and practical. This is also a new positive environmental change brought by the cosmetics bottle market.

For cosmetic bottle packaging, the future trend is still lightweight, simplistic, which is the inevitable trend of the future.

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