Metallized Mylar: Things You May Want to Know
Customers are fond of metallized mylar produced by Hangzhou Haimu Technology Co., Ltd. for its highest quality. From raw materials selection, production to packing, the product will undergo strict tests during each production process. And the quality inspection process is conducted by our professional QC team who are all experienced in this field. And it is produced in strict conformity with the international quality system standard and has passed related international quality certification like CE.
We remain active in various social media, such as Twitter, YouTube, Facebook and so on and actively interact with global customers through posting the pictures and videos of products, companies or production process, enabling global customers to know more clearly about our products and our strength. Our HARDVOGUE is thus greatly enhanced in its awareness and builds trust with global customers.
Many customers are worried about the reliability of metallized mylar in the first cooperation. We can provide samples for customers before they place the order and provide pre-production samples before mass production. Custom packaging and shipping are also available at HARDVOGUE.
When using metallized paper for label production, several common issues may arise. Below is a list of potential problems and corresponding solutions:
1. Printing Issues
Problems:
● Poor ink adhesion: The smooth metallized surface makes it difficult for regular inks to adhere, leading to ink peeling or blurring.
● Slow drying speed: The metallized layer reduces ink absorption and evaporation, causing longer drying times and lower production efficiency.
● Low color reproduction accuracy: The reflective nature of the metallized surface can affect color presentation, leading to deviations in print color.
Solutions:
✅ Use specialized inks (such as UV or water-based inks) to improve adhesion and drying speed.
✅ Apply corona treatment or pre-coating to increase surface energy and improve ink adhesion.
✅ Use a white base layer or adjust color management settings to compensate for the reflective effect.
2. Coating and Surface Treatment Issues
Problems:
● Poor adhesion of UV varnish or lamination: The low surface energy of the metallized paper may cause coatings or varnish layers to peel off.
● Low surface tension: This can affect ink, coating, and adhesive performance, leading to poor processing results.
Solutions:
✅ Use corona treatment or pre-coating layers to increase surface energy, improving the adhesion of UV varnish, lamination, or top coatings.
✅ Choose specially formulated UV varnish or water-based coatings designed for metallized paper.
✅ Store the paper in a dry environment to prevent moisture from affecting the metallized layer.
3. Die-cutting and Processing Issues
Problems:
● Edge cracking or aluminum layer peeling: The metallized layer may detach during die-cutting, affecting the label’s appearance.
● Aluminum layer separation after cutting: The metallized coating may peel off when the label is bent or folded, reducing product quality.
Solutions:
✅ Use high-quality die-cutting blades and optimize pressure settings to prevent cracking or peeling.
✅ Choose flexible metallized paper to enhance adhesion and resistance to folding.
✅ Adjust the die-cutting angle to minimize direct impact on the metallized layer, reducing peeling risks.
4. Adhesion Issues
Problems:
● Weak adhesive bonding: The metallized layer can interfere with glue adhesion, making labels difficult to stick.
● Bubbles or detachment: Adhesives may form bubbles or fail in high humidity or high-temperature environments.
Solutions:
✅ Use adhesives specifically designed for metallized surfaces, such as high-adhesion solvent-based adhesives.
✅ Apply a primer or coating layer to enhance the adhesive’s bonding ability.
✅ Control humidity levels to prevent moisture absorption, which could impact adhesion performance.
5. Durability and Storage Issues
Problems:
● Moisture absorption and warping: Metallized paper has higher moisture sensitivity, leading to deformation when improperly stored.
● Poor heat resistance: High temperatures may cause oxidation or discoloration of the metallized layer.
Solutions:
✅ Store in a dry and temperature-controlled environment (recommended humidity < 50%, temperature 20-25°C).
✅ Use moisture-proof packaging to prevent humidity damage during storage and transportation.
✅ Avoid direct sunlight and high temperatures to prevent oxidation or discoloration of the metallized layer.
6. Environmental and Regulatory Issues
Problems:
● Difficult to recycle: Some metallized papers are harder to recycle due to the presence of the aluminum layer.
● Food safety concerns: Some metallized coatings may not comply with food packaging regulations.
Solutions:
✅ Choose eco-friendly and recyclable metallized paper, such as water-based coated metallized paper.
✅ Ensure compliance with FDA, EU, and other food safety standards, especially for food packaging labels.
✅ Reduce the use of solvent-based chemicals in production and adopt environmentally friendly coating technologies to lower pollution risks.
Summary Table
|
Issue Category |
Specific Problems |
Solutions |
|
Printing Issues |
Poor ink adhesion, slow drying, color inaccuracy |
Use specialized inks, pre-treatment, and white base layers |
|
Coating Issues |
Poor varnish or lamination adhesion |
Increase surface tension with corona treatment, use proper coatings |
|
Die-cutting Issues |
Edge cracking, peeling, aluminum layer detachment |
Optimize cutting pressure, use flexible metallized paper |
|
Adhesion Issues |
Weak bonding, bubbling, label detachment |
Use high-adhesion adhesives, improve surface treatment |
|
Durability Issues |
Moisture warping, heat sensitivity |
Store in dry conditions, use moisture-proof packaging |
|
Environmental Issues |
Recycling difficulties, food safety concerns |
Use recyclable materials, meet safety standards |
🔹 If your customers are printing companies or label manufacturers, consider offering customized metallized paper solutions based on different applications, such as:
● High-adhesion metallized paper for UV printing
● Heat-resistant