How to ensure the quality during the production process of A4 stickers?

Ensuring the quality of A4 adhesive production process is a comprehensive task that involves multiple links and factors. Here are some key measures:

1、 Raw material selection

High quality: Choose high-quality adhesive materials that meet all physical and chemical indicators to avoid using expired or unstable products. High quality materials can ensure the stability of printing effect and adhesive performance.

Material considerations: The quality of adhesive printing materials is crucial, as surface gloss, color consistency, and density uniformity can affect ink absorption uniformity and color difference of label prints in the same batch. At the same time, the coating strength of the surface material is also crucial, which is related to whether a large amount of paper powder will be generated during printing.

Thickness of base paper and surface material: The uniformity and strength of the thickness of the base paper and surface material will affect the printing performance and die-cutting uniformity, as well as the speed and edge breakage during waste discharge.

Flatness and rewinding tension: The flatness of the material determines whether the paper can be correctly fed, aligned, and delivered during the printing process. For roll materials, the rewinding tension will affect the flatness of the end face of the roll material, the situation of glue leakage, and the accuracy of alignment.

2、 Ink selection

Compatibility: Choose ink that matches the adhesive material, especially aluminum foil and film materials. The requirements for ink are very strict, and specific principles must be followed, such as using ink produced by only one ink supplier at a time for one adhesive material.

Ink quality: Consider the inherent quality, color, and wetting of the ink on the substrate (adhesion strength).

3、 Equipment configuration and adjustment

Reasonably select equipment: Based on the printing and processing requirements of adhesive labels, select equipment reasonably and ensure that the accuracy and performance of the equipment meet production requirements.

Equipment adjustment:

Ink delivery system: Maintain the accuracy of each rubber roller, especially the ink roller, to ensure even ink transfer.

Embossing device: Regularly clean the embossing cylinder and platform to maintain their flatness and smoothness, and ensure good meshing of gears and chains.

Traction system: Ensure the accuracy of the traction device to determine the accuracy of label printing.

Die cutting device: Improve the accuracy of the die cutting device, including the accuracy of the die cutting blade and die cutting components, to ensure the quality of label die cutting and waste removal effect.

4、 Process route formulation

Comprehensive consideration: Based on customer requirements, label sample situation, equipment configuration, material and ink selection, as well as the specific situation of the printing factory, a process route is formulated comprehensively.

Experimental verification: Conduct process tests when necessary to verify the printing and processing suitability of labels, and adjust the process route based on the test results.

5、 Production environment control

Temperature and humidity control: Maintain the temperature of the production environment within a suitable range (such as around 35 degrees) and the humidity at around 55% to ensure the stability and printing quality of the adhesive material.

Cleanliness: Maintain the cleanliness of the production environment to avoid contamination of adhesive materials by dust and impurities.

6、 Quality monitoring and feedback

Comprehensive control: Conduct comprehensive control during the production process, including raw material inspection, equipment debugging, process execution, and other aspects.

Customer feedback: Pay close attention to the actual usage of the product at the customer's location, promptly identify problems and make improvements. By regularly visiting customers or collecting customer feedback, we can understand the application of labels and any issues that arise, in order to further improve production processes and enhance product quality.

In summary, ensuring the quality of A4 adhesive production process requires starting from multiple aspects such as raw material selection, ink selection, equipment configuration and adjustment, process route formulation, production environment control, and quality monitoring and feedback. The implementation of these measures will help ensure the quality and stability of adhesive products, meet customer needs, and enhance market competitiveness.