We are a leading manufacturer and supplier of Plastic bags, Ziplock bags and Plastic packaging bags in China. Better plastic bag, better life.

Plastic Bag Printing Logo Process Detailed Explanation-L

Plastic Bag Printing Logo Process Detailed Explanation-L

2024-12-26 15:08:35

In today's business and daily life, plastic bags as a widely used packaging materials, the above brand identity (Logo) printing for product promotion and corporate image shaping plays an important role. The following will describe in detail the methods and steps of printing Logo on plastic bags.

First,Preliminary preparation

1. Final design: First, the company needs to determine the Logo design to be printed on the plastic bag. This design should conform to the brand image, have a clear visual effect and recognition, while taking into account the size, shape and use of the plastic bag scene, to ensure that the Logo on the bag surface layout is reasonable and beautiful.

2. Material selection: Select the appropriate plastic material according to the use of plastic bags and the expected printing effect. Common polyethylene (PE), polypropylene (PP), etc., different materials of plastic bags have differences in printing adaptability.

3. Ink adaptation: It is important to choose the ink that is compatible with the plastic bag material. In general, solvent-based ink is widely used in plastic printing, its drying speed is fast, the adhesion is strong, and it can form a firm ink layer on the plastic surface.

Second, printing process selection

1. Screen printing: This is a more common and relatively low cost plastic bag printing process. The principle is that through the extrusion of the scraper, the ink is transferred to the surface of the plastic bag through the mesh of the screen plate, forming the same graphic as the original manuscript. The advantage of screen printing is that it can print a thicker ink layer, the color is bright and full, the effect is better for large areas of color blocks and simple patterns, and it can adapt to the printing of plastic bags of different shapes and sizes.

2. Gravure printing: gravure printing has high printing quality and accuracy, can present delicate lines and rich color levels, suitable for printing complex and exquisite Logo and image. The working principle is to carve or corrode the graphic part on the gravure cylinder, the ink is filled in the groove, the excess ink is scraped off by the scraper, and then the ink is transferred to the plastic bag under the action of pressure.

3. Flexographic printing: Flexographic printing adopts flexographic material, and the ink is transferred to the plastic bag through the mesh roller. This printing process has the advantages of moderate cost, fast printing speed, multi-color printing, etc., and has strong adaptability to the material of plastic bags, and can print clear graphics on plastic films with different thickness and surface characteristics.

Thirdly, printing process control

1. Plate position adjustment: Before the official printing, it is necessary to accurately install the plate on the printing equipment, and adjust the plate position to ensure the accurate position of the Logo on the plastic bag.

2. Ink allocation and supply: According to the printing process and the material characteristics of plastic bags, the selected ink is properly allocated to ensure the accuracy and consistency of color. In the printing process, it is necessary to ensure the continuous and stable supply of ink, and the ink is uniformly transported to the printing plate through the ink pump, ink hopper and other devices. At the same time, attention should be paid to controlling the viscosity and drying speed of the ink to avoid printing quality problems caused by too thin or too thick ink, such as ink, paste or poor drying.

3. Printing pressure and speed control: printing pressure and speed are key factors affecting printing quality. The appropriate printing pressure can ensure that the ink is fully transferred to the plastic bag to form a clear and complete pattern, but too much pressure may deform the plastic bag, damage or lead to excessive ink penetration, affecting the printing effect and the physical properties of the bag; Too little pressure will cause insufficient ink transfer, incomplete graphics, color and other problems.

4. Quality inspection and adjustment: In the printing process, real-time quality inspection should be carried out to discover and solve possible problems in time. Through manual sampling or online testing equipment, the printed plastic bags are checked, including the clarity of Logo, color accuracy, overprinting accuracy, ink adhesion and so on.

Fourth, post-processing

1. Drying and curing: the plastic bag after printing needs to be fully dried and cured to ensure that the ink is firmly attached to the bag surface and improve its wear resistance and friction resistance. For plastic bags printed with solvent-based ink, it is usually necessary to dry naturally in a well-ventilated environment or accelerate solvent volatilization by heating drying equipment to dry and cure the ink; Water-based ink printing bags can be dried by hot air, infrared drying and other ways to improve drying efficiency

2. Cutting and finishing: the dried plastic bag is cut according to the predetermined size specifications, and the excess side material is removed to make the edge of the bag neat and smooth. The cutting process should use sharp knives or professional cutting equipment to ensure the cutting accuracy and avoid problems such as rough edges and irregular cuts that affect the appearance and performance of the bag. After the cutting is complete, the plastic bags are sorted, counted and packed for storage, transportation and delivery to the customer.

In summary, the printing of Logo on plastic bags requires comprehensive and fine operation and management from the early design, material and ink preparation, to the mid-term printing process selection and process control, and then to the later drying, cutting and finishing links, in order to ensure the printing of high-quality plastic bag products that meet the requirements of brand image. To provide strong support for the enterprise's product promotion and brand building.

Copyright © 2020 BEAUFY GROUP LTD.
Eyelash vendors wholesale, Eyelash vendors, Cat litter manufacturers, Canned Fruits manufacturers, Candle manufacturers, Mink eyelashes manufacturers, lash vendors, Hand tied weft extensions, Eyelash manufacutrers, lash vendors, Cationic polyacrylamide, Optical brightener ob-1, Rubber sheet rolls manufacturer, Geo Fabric manufacturer, Non Woven Bag manufacturer