Aluminum foil bags have the following seven advantages for cooked foods:

1. Outer bag protection: The food can be separated from oxygen, water vapor and stain by aluminum foil packaging. Anti-leakage is also a demand element of packaging design. Some packages include a desiccant or a deoxidizer to extend the shelf life. Vacuum packaging or air drawn into the bag is also the primary food packaging method. The preservation of food during the warranty period is novel, and the novelty and safety are the primary functions of the package.

2, physical maintenance: food storage hidden in the bag to prevent extrusion, impact, vibration, temperature difference and other sights.

3, package or load the same package: small items of the same variety into a package is a good way to reduce the volume. Powders and granular objects are required to be packaged.

4, to convey information: packaging and labeling can clearly let people know how to use food, as well as transportation, receiving takeover or disposal.

5. Safety: The packaging bag can carry forward the main effects in transportation. The bag also prevents food from returning to other items. Food packaging also reduces the likelihood of food being stolen. Some food packages are strong and have anti-counterfeiting labels, the effect is to protect the merchant’s benefits from loss. The bag can have a laser logo, special color, SMS authentication and other labels. Other retailers use electronic monitoring labels on food packaging bags to prevent theft. Consumers get their products for degaussing.

6. Marketing: Marketing often uses packaging labels to encourage potential buyers to purchase goods. Packaging design has been a scene of insignificance and change from time to time for decades. Marketing communication and graphic design for use in outer packaging bags highlights the highlights of the product.

7. Convenience: The packaging bag can be easily added, loaded, unloaded, stacked, displayed, sold, opened, reloaded, applied and reapplied. It is very advantageous for food packaging to use aluminum foil materials to protect food and enhance corporate image.

Advantages of choosing aluminum foil bags for cooked foods

Plastic bottles will deform when exposed to heat, and it is difficult to restore the original shape in the usual way.
1, plastic bottles will deform when exposed to heat, which is caused by thermal effects. Especially those plastic bottles with thin wall thickness, such as mineral water bottles, are deformed as soon as they are hot. At this point, it is harder to restore.

2, the plastic bottle will deform when exposed to heat, the general method is difficult to restore it to its original shape. However, if the plastic bottle is deformed by heat under certain environmental conditions, it will be restored to its original shape by heat. This condition is: when the temperature is 150–160 ° C, a certain pressure is applied, and with the help of a specific mold, it will be restored to its original shape by heat.

3. Use a shaped object like a wooden block to hold the plastic part into the shape you want, then put it in the oven for 80 or 90 degrees for 2 hours and it will become your shape, or hot. The torch can be blown.

4. The melting point of this plastic is relatively low, and the temperature of boiling water is enough to soften it and shrink into a mass. There is no way to recover. If you really want to recover, you have to use a mold.

5, the main component of the plastic bottle is synthetic resin, it is a synthetic polymer material, in the case of high temperature, the original structure between the molecules is destroyed, melted, so it becomes awkward. The thermal expansion and contraction is a change in the molecular spacing when the molecules are not destroyed. Change the volume without changing the essence. So there is no possibility of getting bigger.

Common problems in plastic injection molding

Reasons for gas lines:
The mold venting is not good, the cold material well is improper, the mold temperature is low, the injection speed is too fast, and the raw materials are not dried well.
Solution:
Strengthen the mold venting, design a reasonable cold material well position and size, reduce the injection speed, and dry the raw materials.

Reasons for shrink:
Because the product inlet is too small, the product glue position is too thick, the injection pressure is insufficient, and the mold cooling is insufficient.
Solution:
Increase the rubber mouth, reduce the product glue position, increase the injection pressure and increase the mold cooling water path.

Reasons for dark spot:
It was polluted by the feeder, the drum of the dryer was not cleaned, the environment of the feeding workshop was poor, and the screw of the barrel of the machine was not cleaned.

Solution: Clean the dryer barrel and pay attention to cleaning the surrounding dust. It is best to set up a clean room and the barrel screw should be cleaned.

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!

1. Compression molding is also called molding in the industry. The molding of thermosetting plastics such as phenolic resin and unsaturated polyester resin is the first step in the processing of plastic bottles.
2.  Extrusion extrusion, also known as extrusion molding, is a method in which an extruded resin is continuously passed through a die by an extruder to extrude a product of a desired shape. The utility model has the advantages that the product of various shapes can be extruded, the production efficiency is high, and the production can be automated and continuous; the disadvantage is that the thermosetting plastic cannot be widely processed by the method, and the product size is prone to deviation.
3.  Injection molding can also be called injection molding. Injection molding is a method in which a thermoplastic melt is injected into a mold under high pressure using an injection molding machine to obtain a product by cooling and solidifying. The advantages of injection molding are fast production speed, high efficiency, automatic operation, and the ability to form parts with complex shapes, which are especially suitable for mass production. The disadvantage is that the cost of equipment and mold is high, and the injection molding machine is not easy to clean.
4.  Blow molding is also called hollow blow molding. Mainly by means of the pressure of compressed air, a method of inflating a hot resin parison closed in a mold into a hollow article, which comprises two methods, a blown film and a blown hollow article. The blow molding method is mainly used for producing film products, various bottles, barrels, pots, and the like

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.

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.

The electromagnetic induction sealing machine utilizes the principle of electromagnetic induction, so that the aluminum foil on the bottle mouth of the plastic bottle instantaneously generates high heat, and then fuses on the bottle mouth to achieve the function of sealing.

The main factors affecting the seal are:

1. The bottle mouth is uneven and has serious burrs.
2. The mouth of the bottle has a slope, half height and half half.
3. The height of the bottle mouth is insufficient, and the material of the gasket is not good.
4. Sealing time and power of electromagnetic induction machine.
5. The influence of climate temperature, different temperatures in different seasons will also have different effects on the sealing of plastic bottles.

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.

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.