3 side seal bag

Customized packaging bag styles are diverse, different composite materials cause different product performance, aluminum foil bags are more suitable for you. Composite packaging bags, plastic packaging bags aluminized film is a thin layer of aluminum steam cooked on top of the plastic film, the essence of the plastic film, aluminum foil is metal. Aluminized film barrier is not as good as aluminum foil, the thickness of the aluminum layer is not as thick as aluminum foil.

There are many types of aluminized films, such as aluminized PET film, aluminized CPP film, aluminized OPP film, aluminized nylon film, aluminized PE film and so on. Aluminum foil is aluminum foil, the thickness of aluminum foil is not the same, the use is not the same. Vacuum packaging bags, tea packaging standing pouch bag   bags aluminized film cost is low, aluminum foil cost is high. Aluminum foil is a metal material if folded after the crease will not go down, aluminized is a plastic film will not appear this situation.

If your products need to be protected from light, water and air, not too conceed about the shape or as the inner layer of packaging, aluminum foil bags are recommended. If the product storage conditions are not so harsh, require the product packaging better look some recommended aluminum-plated bags. Food bags, food packaging bags

Talking about the rapid customization of plastic packaging bags, we know that efficiency and cost are the ultimate pursuit of packaging companies. Professional customized food plastic packaging bags, vacuum bags, high temperature cooking bags, frozen meat food bags, printing roll film and other composite bags and other flexible packaging.

1. Choose plastic packaging bag manufacturers. The country has strict food safety control, and products produced by unqualified manufacturers are not allowed to be sold on the market. First of all, you must choose a qualified manufacturer, with formal packaging qualifications and complete licenses, which is your safe choice. Composite packaging bag, aluminum foil bag

2. Discuss the characteristics of the product, and confirm that the design has a professional design department, which has been engaged in the design and production of food packaging bags for many years, and is very familiar with the characteristics of various types of food. Go to a lot of unnecessary troubles, improve efficiency and ensure quality.

3. The final draft of the plan The final draft means that the food company and the packaging company agree with the plan and are satisfied with the patte and style. The food custom packaging roll film packaging company has sufficient raw materials and there is no technical difficulty. Only when both parties have no objection is the real final draft. It is hoped that the company will seriously review the manuscript and will not revise the manuscript repeatedly, so as to save time for the next step.

4. The designed plan for plate making is handed over to the company for plate making. This process takes about 3-4 days depending on the situation. After the plate making is completed and a sample plate is printed, it needs to be confirmed by the food company and the packaging manufacturer. This step is very important and cannot be modified once confirmed.

5. The process of printing, compounding and bag making may take 5-7 days according to the actual situation. In special circumstances, we can communicate with the company to meet the needs of customers. Vacuum packaging bags, tea packaging bags

Six, inspection of each batch of products produced, will strictly test the report.

Seven, packaging and delivery The packaging is firm and tidy, with a large quantity, fast delivery, and the most basic commitment to customers. The above steps of customizing plastic packaging bags, each step is closely linked, saving time and improving efficiency, it is best to follow the above steps, prepare product-related information in advance, and communicate with plastic packaging bag manufacturers. food bags, food packaging bags

Retort bags are generally made of soft aluminum foil with a thickness of 9. It has excellent moisture barrier, gas barrier and light barrier properties. If there is no mechanical damage and pinholes, it is completely impermeable to moisture, air and light. , and has extremely high heat resistance and oil resistance, so the composite packaging bag containing aluminum foil has the properties of full sealing, high fragrance retention, high oil resistance, and high temperature resistance. There are three things to keep in mind when choosing the foil to use in a retort pouch:

1. The surface cleanliness of the aluminum foil should be high, without oil and dust, and the surface tension should be high, which should reach more than 72mN/m. A simple method is to test with distilled water, which should be fully wetted on the surface of the aluminum foil. If the surface of the aluminum foil is seriously oily, it will affect the composite fastness of the aluminum foil and other materials, especially after the packaging bag is cooked at high temperature, delamination and peeling will occur.

2. The number of pinholes in the aluminum foil should be less. Aluminum foil should be the material with the best barrier properties, but if it has pinholes, its barrier properties plastic zip lock seal food packaging  will be greatly reduced, gas and light will penetrate quickly and directly, and the contents will soon deteriorate. Generally speaking, the thicker the aluminum foil, the less the number of pinholes. For example, the number of pinholes in the aluminum foil with a thickness of 7m should be less than 200 holes/square meter; the number of pinholes in the aluminum foil with a thickness of 9m should be less than 100 holes/square meter. square meters. No matter how thick the aluminum foil is, the diameter of the pinhole should not be larger than 20m.

3. The texture of the aluminum foil should be soft, it should not be easy to break when folded, and it should have good toughness. The purchased aluminum foil should be stored in a dry state, and should not be stored for too long.

Gravure is also called rotogravure. Like engraving, gravure is a form of gravure that produces fine, detailed pattes. Like flexo, gravure is often used for high-volume printing on packaging, wallpaper, and gift wrapping. , although less common, gravure can also be used to print magazines, greeting cards and mass advertising pieces. is a durable, high-speed, high-quality printing method for CMYK printing, where each ink color is applied by its own cylinder with a drying step in between. In gravure printing, the patte of each unit is acid-etched for each color on a cylindrical surface of a metal cylinder. Like a gravure or letterpress press, these units are recessed into cylinders where the printed image is lifted or similar to offset printing, with the image level with the plate. Cylinders were etched with cells of different depths. These cells remain in the ink transferred to the substrate.

The size of the cells must be precise, as darker cells produce more intense colors than lighter cells. The cells are filled with ink, and the non-printed parts of the plate or cylinder are wiped off or scraped off the ink. Then, the paper or another substrate is pressed into the ink cylinder on a rotary press, and the image is transferred directly to the paper, unlike in offset printing using an intermediate cylinder. The engraved cylinder is partially immersed in the ink fountain, where it picks up ink to fill the recessed battery with each revolution of the press.

Gravure printing has many advantages: 1. Fewer variables to control than other printing processes, ensuring more consistent print quality during operation. 2. Gravure printing standing pouch bag   provides "consistent colors, even if the run includes millions of copies." 3. Gravure printing is a direct printing process, the image on the cylinder is directly printed onto the substrate, resulting in better ink layout and more faithful image rendering. 4. Color diversity, the image data wrapped around the cylinder can be continuous, so there is no panel seam display, such as wallpaper or gift wrapping.

5. Wide adaptability, wide range of substrates, publication printing: very thin paper or coated paper. Packaging Printing: Cardboard, Plastic Film, Aluminum Foil, Laminate, Vinyl, Non-porous Materials.

6. There is a lot of ink adhesion. The depth and size of the engraved cells determine the amount of ink that can be placed on the substrate. Gravure printing can produce more ink than other processes.

7. High productivity, gravure printing machine runs at high production speed: 3000-3300 feet per minute.

8. The printing plate roller is very durable. It is common to print 2 million to 3 million from one plate roll set. Diamond cutting tools (engraving heads) can cut at 10,000 units per second. From this point of view, gravure printing is indispensable in our lives, and it is also a manifestation of the continuous optimization of printing methods in the new era.