There are several ways to wipe off the silk screen on the plastic bottle

There are several ways to wipe off the silk screen on the plastic bottle:

First you need to know the material of the plastic bottle, whether you use solvent ink or UV ink.

If you use solvent-based inks (commonly referred to as ordinary inks) PET, PVC, PC, PS, these materials require special solvents to wipe off, but the effect is generally not ideal. PE, PP can be wiped off with Tianna water, net washing water, and ink thinner.

If you use UV ink, it is more troublesome. PET, PVC, PC, PS can be tried with alcohol. PE and PP currently have special cleaning agents. The single effect is not ideal and the smell is large.

1, the pattern does not exceed 3 hours, it can be removed with absolute ethanol;

2, the pattern does not exceed 24 hours, you can use water to remove it;

3. Between 24 hours and 72 hours, the pattern can be removed with banana water.

It takes too long to spit the pattern on the plastic bottle. If you remove it, it will destroy the surface material and affect the reprinting.

There are three points to note before silk screen processing

There are three points to note before silk screen processing:

1. Clean the printing place of silk screen processing on plastic bottles. Try to ensure that there is no dust in the air in the printing workshop and plate making workshop, otherwise it will affect the printing quality. For workshops that require high printing accuracy, air purification equipment should be installed if necessary to keep the printing and platemaking workshops clean.
2. The temperature and humidity requirements, the temperature and humidity of the four seasons vary greatly, and the impact on printing accuracy is relatively large, especially the multi-color overprint, the effect is more obvious, so the indoor humidity and temperature must be relatively stable, and according to the season Properly adjust the temperature and humidity in the room to ensure printing dimensional accuracy.
3. Understand the nature of substrates. At present, with the development of science and technology, there are many types of substrates and different shapes. Before printing, select appropriate inks, solvents, and scrapers according to different requirements.

What are the precautions when making hot stamping signs?

What are the precautions when making hot stamping signs on cosmetic packaging?

The signs and labels must be centered around the graphics and texts. The graphics and text should be clear, not deformed, and maintain a good image. The difference is the production of hot stamping logos and stamping other products that are only decorative. Pay attention when stamping. The following points:

1. First clean the surface of the identification label to be stamped. According to the material of the identification label, select the applicable stamping foil, and then determine the stamping temperature according to the type of stamping foil.

2. First try a few samples, control the depth of the stamping with high-speed stamping pressure, and then locate and lock the controlled depth.

3. After reaching a certain depth, it is necessary to grasp the stamping time and raise the stamping head quickly. It must be successful once and cannot be repeated. Repeating will make the writing on the signboard blurred, the strokes produce ghosting, and the graphics are not bright.

4. Embossed embossed identification signs should pay attention to controlling the pressure, especially the softer plastic. Excessive pressure will cause the handwriting to collapse and deform the handwriting. When stamping, the edges and corners of the graphic will not be damaged.

Honey in plastic or glass?

Honey in plastic or glass?

If pure honey is stored for a long time, it is not suitable to use plastic bottles, because plastic will produce plasticizers over time, and the sealing effect is not good. The solution is best to use a refrigerator to store them. In supermarkets, Honey is basically syrup when it is stored in plastic bottles.

Considering its transparent beauty, good chemical stability, no pollution to the contents, high temperature resistance, and can not affect the quality of honey, glass bottles are chosen for long-term storage.

The honey is put in a plastic bottle. After a few days, the plastic bottle swelled because it is full of gas and would volatilize because the weather is not so cold, but the plastic bottle feel a little softer and the honey appears white. Foam is the reaction of honey with plastic bottles.

How does the hand sanitizer create foam?

How does the hand sanitizer create foam?

How does the hand sanitizer create foam? It is caused by air pressure. The hand washing liquid is manually pressurized to hydraulically wash the hands. The mousse bottle is with high pressure when it is filled. It has pressure and will automatically spray as long as the bottle mouth is pressed.

Compared with ordinary hand sanitizers, foam hand sanitizers have innovative breakthroughs in function and concept. To put it simply, the foam is relatively rich, and the foam is directly pressed. It can be disposable or washed. This type of foaming hand sanitizer is relatively water-saving to clean and relatively clean and easy to rinse. The principle is that there is a special device at the mouth of the bottle to fully mix the air with the foaming agent. I haven’t seen a foam gun for firefighting. I must have done such an experiment in a middle school. The drooping paper floats to the place where the gas flows, because the fluid has a decompression effect. The foam gun has a common nozzle in the middle, and there is a hole with many holes on the side. When the foaming agent is sprayed from the middle of the sleeve, a large amount of air is drawn in from the side due to the decrease in air pressure, and it is mixed with it to generate foam.

How the airless pump bottle can be reusable

When the airless pump bottle is pressed, the bottom piston will run up to squeeze out the contents. When the contents are used up, the piston has already run to the top. You can remove the pump head and re-install it, or use a hard object The piston tops to the bottom and is ready to be used again.

Airless bottle refers to a container that can isolate gas from the outside temperature or a container that isolates external bacteria. The contents of the airless bottle can be completely isolated from the air to prevent the product from oxidizing and deteriorating due to contact with air, which can breed bacteria. The airless bottles commonly used in the market are composed of a cylinder and an oval container and a piston at the bottom. Its design principle is to use the contraction force of the spring and prevent air from entering the bottle, creating a vacuum state, and use atmospheric pressure to push the piston at the bottom of the bottle forward.

Common packaging box structure

Common packaging box structure are divided into five types: 1. Portable hand bag, because some products are large in size. In order to make it easier for customers to carry, the handles will be added to the packaging box and can be folded or hidden. 2. Heaven and earth cover boxes, they are differently round shape with tangent lines. You can open the cover to see the goods, as well as the characters and trademarks. It is easy to open and easy to take out the goods and display as well as promote the products. 3. Special-shaped packaging color boxes have various shapes such as rhombus, octagon, hexagon, circle, triangle, etc. This packaging color box uses arcs, straight lines to cut and alternate the combination of faces to produce packaging color boxes. 4. Window-type color boxes, which are divided into partial and multi-faceted windows, also use transparent plastic film, no plastic film, PET film, mainly showing the goods for consumers to buy. 5. Special box type, some add an additional accessory, some open the gap, some open the hole add a quality product, mainly based on the different uses of different products for the corresponding design. There are many types of packaging color boxes on the market, with different shapes, and the unique structure has an indispensable role in promoting product packaging promotion and attracting consumer purchases.

By container manufacturer: Canvard packaging

Why choose a PET bottle

In recent years, we have found more and more cosmetic brands on the market using pet lotion bottles. So why is pet lotion packaging so popular? First of all, the glass or acrylic lotion bottle is too heavy, and the weight is not conducive to carrying out. As more young people travel, the pet lotion bottle package is more convenient to carry. It is also more portable. Secondly, with the rise of online shopping, lotion bottles often break or have other damaged conditions during transportation, while pet lotion bottles are shatter-resistant, and collisions and extrusions during transportation will not cause problems such as breakage and leakage. Once again, pet lotion bottle packaging is relatively simple to produce and low in cost, so it is also popular.

How to select a good PET bottle?The answer is choose a new material. Some plastic blow molding manufacturers will use the secondary material to process the pet lotion bottle, which obviously affects the quality of the emulsion. Therefore, special attention should be paid to the raw materials produced by the lotion bottle manufacturers. Besides, price is also important, the lotion bottles are used in large quantities, so you need to control the cost as much as possible In addition, the stability of the supply of the emulsion bottle packaging manufacturers, and the timely delivery is also crucial for the late stage of the emulsion manufacturer.

Which is more popular between plastic bottles and facial cleansing tubes?

Which is more popular between plastic bottles and facial cleansing tubes?

When it comes to facial cleanser, it is widely used by both men and women. In this context, the market demand for facial cleanser bottles continues to grow. There are several major reasons. First, the demand for facial cleanser market continues to grow, and people are increasingly aware of the importance of facial cleanser for skin care, which naturally led to the growth of the facial cleanser market. Second, the competition in the facial cleanser market is becoming increasingly fierce. More and more cosmetic companies are entering the facial cleanser sector. This has also intensified the competition in the facial cleanser market on the other hand, and has also led to an increase in the demand for facial cleanser bottles.

At present, there are mainly two types of packaging for facial cleansing products, they are plastic bottles and facial cleansing tubes. So, which one is more practical? First of all, the facial cleanser tube is easy to squeeze, and the facial cleanser is more in the form of lotion. In contrast, the facial cleanser is not squeezed. Secondly, the cost of the facial cleanser tube is relatively lower than that of the facial cleanser bottle, and the cost of the facial cleanser bottle is relatively higher. Once again, facial cleanser bottles are more upscale in appearance, and facial cleanser tube give people a cheaper feel.

Which one is more practical,It still needs to be treated differently. It should be distinguished according to actual usage.

Double airless pump bottles-Sunscreen foundation cream bottles

Product: 
airless bottle for cosmetics, airless cream bottle, airless dispenser bottle, airless bottle pump, BB cream airless cosmetic bottle, eye serum bottle
Acrylic bottle Looks luxury
Color is changeable
Silkscreen printing is available

Aluminum foil seal for cosmetic soft tube

Aluminum foil seal for sealing the tube mouth. glass bottle aluminum foil seal, plastic bottle aluminum foil seal, plastic cream jar aluminum foil seal
Available in different sizes 0.9cm,1cm,2cm,3cm,4cm,5cm,6cm

Three types of cosmetics using cosmetic plastic tubes

Plastic cosmetic tubes are made of PE materials, which are widely used plastic materials. It is suitable for the production of cosmetic tubes. It has the advantages of softness, corrosion resistance and size. It can be used for facial cleansing, eye cream, hand cream and other cosmetics. The tube is durable and reliable, and the price is reasonable. It is neutral in all packaging. The ratio is higher, the following three common tubes are available for everyone to choose from.

First, plastic facial cleanser tube

The reason why the facial cleanser tube is made of plastic is because the plastic tube is easy to squeeze and convenient to use, and the capacity can be customized between 10ml and 500ml.

Second, plastic eye cream tube

Eye cream tubes are high-end cosmetics that have become popular in recent years. Commonly used combinations are plastic PE tubes and electrodeless zinc alloy vibrating heads or three balls.

Third, plastic hand cream tube

Every year since August, the factory began mass production of hand cream tubes. The capacity of hand cream tubes ranged from 30 ml to 80 ml. The most popular ones were 30 ml tubes, which were usually equipped with octagonal caps.

Printing introduction of plastic cosmetic tube

There are three processes in sheet printing of cosmetic tubes. Generally, offset printing is first carried out on aluminum-plastic sheet. The biggest advantage of this sheet is that it can print beautiful patterns and achieve photo-quality effects, which is widely recognized by customers. The other is silk screen, this is the same as the silk screen mentioned in the previous article. Although the silk screen is strong and beautiful, the silk screen can’t print the pattern, only the simple text or LOGO can be printed, and the silk screen has the problem of inaccurate positioning. Text in different colors cannot be too close.

Material introduction of cosmetic aluminum-plastic tube

Material introduction of cosmetic aluminum-plastic tube

There are five main materials for cosmetic aluminum-plastic tubes: ordinary silver sheets, ordinary white sheets, high-gloss sheets (also called high-bright sheets), all-plastic transparent sheets, and fully-shaped white sheets. The five kinds of sheets have their own characteristics. The biggest difference is that the printing effect is different. The common point is that the printing effect is very realistic.

In addition, each material has different thicknesses. The most commonly used thickness specifications for cosmetic packaging are: 250μm, 270μm, 300μm, 330μm, 350μm, 400μm, and materials exceeding 400μm. The production process is very demanding, many manufacturers cannot make it. 350μm materials are commonly found in high-end cosmetic packaging, such as facial cleanser, sunscreen, etc. Sheets below 300 μm are generally found in hand cream tubes, toothpaste tubes, and the like.

Plastic cosmetic tube overall structure and its function

Plastic cosmetic tube overall structure and its function

A common plastic cosmetic tube can be divided into a tube tail (A), a tube tube (B), a tube shoulder (C), a tube head (D) and a tube cap (E).

Tube tail (A): It can be made according to different market requirements: straight grain tailing, twill tailing, umbrella tailing, star point sealing, special type sealing, and various shapes. Its main purpose is to increase the shelf display effect. , causing consumer attention, thereby enhancing sales competitiveness. The general production date code is also printed at the end of the tube.

Body (B): The body of the tube for containing lotion, cream.

Plastic tube shoulder (C): The joint part of the hose head and the tube should pay attention to the connection space when making the design artwork, generally 3mm.

Tube head (D): Matches the cover with different shapes and different shapes. The discharge hole of the tube head needs attention, and the pore size is generally selected according to the viscosity of the material to reach the most complete use effect. If the fluidity of the material body is very good, it is necessary to appropriately select the discharge hole of the small pore diameter; on the contrary, if the material body of the paste type is to be appropriately selected, the discharge hole with an enlarged pore diameter is appropriately selected.

Tube cap (E): The tube cap has various shapes and is generally divided into a flat head cover, a round head cover, a high cover, a cover, a super flat cover, a double cover, a spherical cover, a lipstick cover, and a plastic cover. On the processing, bronzing, silver, colored cover, transparent, fuel injection, plating, etc., pointed mouth cover. The hose cover is an injection molded product and the hose is a pull tube.

Advantages of choosing aluminum foil bags for cooked foods

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.

What problems should be paid attention to in the printing of aluminum foil self-adhesive labels?

What problems should be paid attention to in the printing of aluminum foil self-adhesive labels?

The aluminum foil self-adhesive surface material is a composite material of paper and aluminum foil. Like the metal and plastic surface, the ink is dried only by oxidation, polymerization, volatilization, conjunctiva, and solidification without a permeation process. Therefore, ink drying and blocking are two prominent problems when printing. Aluminum foil paper generally has a surface coating, there is no ink fastness problem, and a reasonable solution to ink drying problem is the key to aluminum foil printing.
According to the characteristics of aluminum foil paper, the general design principles of printed graphics are:
First, it is based on simple words and symbols, fully displaying the characteristics of metallic colors, instead of metal signs, and more applications on commodities, such as household appliances and daily necessities.
Second, large-area solid printing or negative printing, instead of large-area bronzing processes, such as wine labels, industrial labels. Aluminium foil paper rarely has color-coded printing.
Silver foil paper circle label aluminum foil paper is divided into two printing methods: web and sheet.
1 web printing. Mainly in letterpress printing. Simple patterns and hand-labeled labels can be used to solve the problem of ink drying by cutting the sheets and drying them on the shelves. Large-area patterns and labels requiring automatic labeling should be printed with ink. In the absence of drying, the filming method is generally used to solve the drying problem of the ink.
2 sheetfed printing. Mainly based on offset printing, suitable for large-area, mesh printing. Due to the improper drying of the ink during continuous printing of the sheet, it is easy to cause many quality problems. To ensure normal printing and quality, the following measures should be taken:
Use aluminum foil special inks, such as aluminum foil inks from Suzhou and offset offset paper inks from Tianjin Toyo Ink.
A proper amount of desiccant is added to the ink to increase the drying speed of the ink.
Add alcohol to the dampening solution to reduce the emulsification of moisture and ink to prevent smudging.
Master the amount of paper stacking, generally a single sheet is suitable, and the rack is dried to avoid sticking due to excessive weight of the paper.
Adjust the viscosity and thickness of the ink and add additives according to the actual situation.
Keep the production environment of the printing workshop, the temperature is controlled at about 20 degrees, so that the ink is in the best condition.
The above ink processing method is also suitable for web letterpress printing.

from Canvard Packaging

Four processing methods for plastic bottles

Four processing methods for plastic bottles:

 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

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.

From professional cosmetic packaging manufacturer: Canvard Packaging

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.

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!