Self-adhesive label printing is a common process in many industries, but it often leads to unnecessary losses and complications for both manufacturers and end users. This is usually due to a lack of understanding about the properties and characteristics of self-adhesive materials. In this article, we explore some real-world challenges faced by label printers and material suppliers, and provide practical solutions to avoid common mistakes.
Case 1: Using Permanent Adhesive Materials Causes Issues with Clothing Labels
A well-known label printing company in Guangzhou once encountered a major problem when producing clothing size labels. They mistakenly used permanent adhesive materials instead of removable ones. As a result, the labels could not be removed easily from the garments, causing significant inconvenience and financial loss for both the manufacturer and the client.
The issue arises because permanent adhesives are designed to stay on the surface permanently, while removable adhesives allow for easy removal without leaving residue. For clothing labels, which are meant to be taken off after use, using the wrong adhesive can lead to serious problems. It’s crucial for companies to understand the different types of adhesives and choose the right one based on the application requirements.
Case 2: Incorrect Material Choice Leads to Bubbles and Wrinkles on Oil Drum Labels
Another common mistake occurs when label printers opt for cheaper materials to reduce costs. One example is using mirror-coated paper instead of polyethylene (PE) for oil drum labels. While this may save money initially, it often results in bubbles and wrinkles that compromise the appearance and functionality of the label.
Oil drums are typically made of HDPE, so using PE-based self-adhesive materials ensures better adhesion. Paper materials, however, have different moisture absorption rates, which can cause them to expand or contract, leading to peeling and damage. To avoid such issues, it's best to match the label material with the surface it will be applied to. If paper is used, additional protective layers like varnish should be considered to prevent damage from humidity.
Case 3: Thermal Paper Causes Information Loss on Export Labels
A final case involved an export company whose logistics labels lost all printed information during a sea shipment. The labels were made using thermal paper, which is sensitive to heat and humidity. After being exposed to high moisture levels during transport, the information faded completely, causing delays and financial losses.
Thermal paper uses heat-sensitive coatings that can react under certain conditions, making it unsuitable for long-term or harsh environments. In contrast, thermal transfer paper uses a ribbon to transfer toner, resulting in more stable and durable prints. For international shipping, where labels must remain readable for extended periods, it’s essential to select the appropriate material based on environmental conditions.
In conclusion, choosing the right self-adhesive material is key to successful label printing. Understanding the properties of different adhesives and materials can help avoid costly mistakes and ensure that labels perform as intended in their specific applications.
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