Label Printing

Before starting mass production, approving label samples is an important step to ensure the final labels meet your product requirements. A proper sample evaluation can help identify potential issues early and avoid production delays, additional costs, or application problems. Many customers focus only on the appearance of labels, but professional label evaluation should include printing quality, material performance, adhesive strength, and compatibility with your production process. At Jinke Label, we recommend testing samples carefully before confirming bulk production. 1. Check Label Appearance And Printing Quality The first step is to check whether the label appearance matches your expectations. Important points include: Color Accuracy Compare the sample with your approved artwork or reference sample. Check: Color consistency Pantone color accuracy Brightness and saturation Differences between different label batches For premium products such as beverages, cosmetics, and supplements, color accuracy is especially important because labels directly influence brand presentation. Printing Details Inspect: Small text readability Barcode clarity Fine lines and patterns Printing registration Edge quality High-quality printing ensures the label looks professional and functions properly. 2. Check Material Performance Different products require different label materials. During sample approval, consider: Waterproof Performance For products exposed to moisture, such as: Bottled beverages Refrigerated products Bathroom products make sure the material can maintain appearance without wrinkling or peeling. Flexibility And Surface Compatibility The label should match the shape and surface of the container. For example: Flexible materials are suitable for curved bottles Transparent materials require good clarity Squeeze containers may need flexible label materials 3. Test Adhesive Performance Adhesive performance is one of the most important factors when approving label samples. Check: Does the label stick firmly? Do edges lift after application? Does the label remain attached during transportation? Does it work under different temperatures or humidity conditions? For special environments, such as freezing, refrigeration, or oily surfaces, standard adhesives may not be enough. 4. Test Labels On Actual Products A label that looks good on a sample sheet may perform differently on the actual packaging. We recommend testing samples on: The real bottle or container The actual production environment The labeling machine (if applicable) Check: Label positioning Wrinkles or bubbles Application speed Adhesion after application This step is especially important for customers using automatic labeling machines. 5. Confirm Roll Specifications For Production For roll labels, make sure the sample matches your production requirements. Important specifications include: Roll direction Core size Roll diameter Number of labels per roll Label spacing Incorrect roll specifications may cause problems during automatic labeling. 6. Review Packaging And Delivery Requirements Before mass production, confirm: Label quantity Packing method Carton requirements Shipping marks Clear communication helps ensure smooth delivery. Conclusion Approving label samples is not only about checking the design. It is a complete evaluation of appearance, material, adhesive performance, and production compatibility. A professional label supplier should help you confirm the right solution before mass production. At Jinke Label, we support customers from sample testing to large-scale production, providing customized label solutions for beverage, food, cosmetic, healthcare, and industrial applications.

Flexible packaging such as squeeze tubes, pouches, and soft plastic bottles often changes shape during use. If the label material cannot move with the package, cracks may appear on the label surface, affecting product appearance and brand image. Why Do Flexible Packaging Labels Crack? 1. Wrong Label Material Selection Rigid materials may not withstand repeated bending or squeezing. For example, standard paper labels are not suitable for flexible packaging because they can easily crack. 2. Poor Adhesive Compatibility The wrong adhesive may cause label lifting, wrinkles, or cracking, especially on surfaces exposed to oil, moisture, or chemicals. 3. Packaging Surface Conditions Dust, oil, or moisture on the packaging surface can reduce adhesion performance and lead to label failure. 4. Printing And Finishing Effects Some coatings or finishing processes may reduce flexibility if they are not matched with the packaging material. Best Label Materials For Flexible Packaging PE Labels PE labels are ideal for flexible packaging due to their excellent flexibility and stretchability. They are commonly used for: Cosmetic tubes Lotion bottles Shampoo packaging Household products PET Labels PET labels offer high durability and scratch resistance, mainly used for products requiring stronger label performance. How To Choose The Right Label Material? Before selecting labels, consider: How much the package will be squeezed or bent Exposure to water, oil, or chemicals Required printing effects and appearance For highly flexible packaging, PE labels are usually the preferred choice because they can move with the package and reduce cracking risks. At Jinke, we provide customized flexible packaging label solutions with different materials, adhesives, and finishes to meet various application requirements. FAQ Q1: Why do labels crack on squeeze bottles? Labels crack when the material is too rigid and cannot follow the movement of flexible packaging. Q2: What is the best label material for cosmetic tubes? PE labels are commonly recommended because of their flexibility and durability. Q3: Are BOPP labels suitable for flexible packaging? Yes, but they are better for applications requiring waterproof and oil-resistant performance rather than frequent squeezing. Q4: How can I prevent labels from peeling off plastic packaging? Choose the right adhesive, clean the surface properly, and select a suitable label material.

Color consistency is one of the most important factors in custom label printing. However, many customers notice slight color differences between digital artwork, samples, and mass production labels. Understanding why this happens can help brands avoid unexpected results and improve packaging consistency. In this article, we explain the most common reasons for color difference in label printing and how professional manufacturers control color quality during production. 1. RGB And CMYK Color Differences One of the biggest reasons for color variation comes from the difference between screen colors and printed colors. Digital screens use RGB color mode (Red, Green, Blue), while printing uses CMYK (Cyan, Magenta, Yellow, Black). Some bright colors displayed on a monitor cannot be reproduced exactly in CMYK printing. For example: Neon colors Bright fluorescent tones Very vivid blue or green shades These colors may appear less vibrant after printing. Recommendation: Always convert artwork to CMYK before production and check printed proofs instead of relying only on screen previews. 2. Different Label Materials Affect Color The same ink can look different on different materials. For example: White BOPP creates brighter colors Transparent materials may reduce opacity Metallic silver materials create reflective effects Matte materials appear softer than glossy materials Even the same Pantone color may show slight differences depending on the surface and coating. Recommendation: Choose the final label material before confirming colors. 3. Printing Methods Can Produce Different Results Different printing technologies have different color performance. Common printing methods include: Flexographic printing Offset printing Digital printing Each method uses different ink systems, plates, pressure settings, and drying methods, which can influence the final appearance. For large quantity orders, flexographic printing is commonly used because it provides stable color consistency and high production efficiency. 4. Lighting Conditions Change Color Appearance Labels may look different under: Sunlight Warm indoor lighting White LED lighting Warehouse lighting This phenomenon is called metamerism. A label that looks perfect in the factory may appear slightly different in a retail store. Recommendation: Check printed samples under actual application lighting conditions whenever possible. 5. Lamination And Surface Finishing Influence Color Surface treatments can also affect final color appearance. Examples: Gloss lamination makes colors appear deeper and brighter Matte lamination creates a softer effect Spot UV increases contrast Hot stamping changes visual reflection Many customers compare unlaminated proofs with finished labels and notice color differences after finishing. This is normal in label production. 6. Batch-To-Batch Variations Small color variations may occur between different production batches due to: Ink batch differences Material batch differences Machine calibration Temperature and humidity changes Professional label manufacturers usually control color difference within acceptable industry tolerances. 7. How Professional Label Manufacturers Control Color Consistency At JINKE LABEL, we use several methods to maintain stable printing quality: Pantone color matching Color proof confirmation before production Ink density control during printing 100% visual inspection Performance sampling during production Stable material sourcing For repeat orders, we also keep production records to improve consistency across different batches. Final Thoughts Slight color variation is a normal part of label printing, especially across different materials and printing methods. However, with proper color management, professional proofing, and stable production processes, color differences can be minimized effectively. If you are looking for custom labels with stable printing quality and professional color control, feel free to contact JINKE LABEL for samples or technical support.

Labels are meant to stay put—through transport, storage, and real-world use. Yet in many industries like food, beverage, cosmetics, and chemicals, label failure is a common (and costly) issue. Peeling edges, bubbling, or complete detachment can damage brand image and even disrupt operations. In this article, we break down the most common reasons why labels fall off—and how to fix them effectively. 1. Poor Surface Compatibility Not all surfaces are label-friendly. Materials like low surface energy plastics (e.g., PE, PP), textured containers, or oily surfaces make it difficult for adhesives to bond properly. Solution: Choose adhesives designed for challenging surfaces, such as high-tack or specialty adhesives. Surface testing before production is highly recommended. 2. Inappropriate Adhesive Selection Using the wrong adhesive is one of the top causes of label failure. For example, a standard adhesive may not perform well in freezing conditions or high temperatures. Solution: Match the adhesive to the application environment: Freezer-grade adhesive for cold storage Heat-resistant adhesive for high-temperature exposure Removable adhesive for temporary labeling 3. Environmental Factors Humidity, temperature fluctuations, and exposure to water, oil, or chemicals can weaken adhesion over time. Solution: Select materials and adhesives that are resistant to: Moisture and condensation Oil and chemicals UV exposure (for outdoor use) 4. Application Issues Even with the right materials, improper application can lead to failure. Common issues include: Applying labels on dusty or wet surfaces Uneven pressure during application Misalignment in automatic labeling machines Solution: Ensure: Clean, dry surfaces before application Proper pressure and speed settings on labeling machines Correct label size and shape for your equipment 5. Incompatible Label Material Some label materials shrink, expand, or lose flexibility under certain conditions, causing them to peel away. Solution: Use the right material for your application: Film materials (PP, PE) for flexibility and durability Paper materials for cost-effective indoor use Laminated or coated labels for extra protection 6. Storage and Handling Problems Labels stored in poor conditions (high humidity, heat, or direct sunlight) may lose adhesive performance before use. Solution: Store labels in a cool, dry environment Avoid prolonged exposure to sunlight Use labels within the recommended shelf life Final Thoughts Label failure is rarely caused by a single factor—it’s usually a combination of material, adhesive, environment, and application. The key to preventing labels from falling off is choosing the right combination and validating it under real-use conditions. If you're experiencing label issues, working with an experienced label manufacturer can help identify the root cause and provide a tailored solution.