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Polyurethane materials are a general term for a class of macromolecular compounds that have urethane structures in their molecular structure. They are usually prepared by the polyaddition reaction of diisocyanates and polyols. Polyurethane polymers possess both polar functional groups that allow for physical cross-linking and non-polar and flexible chain segments. When used properly, these po...
Let's learn about the characteristics of water-based acrylic emulsion! 1. Excellent Adhesion The polymer structure of water-based acrylic emulsion facilitates the flow and wetting of molecular chains on the substrate surface, resulting in close contact between the coating and the substrate molecules, achieving high adhesion. 2. High Pigment and Filler Loading Capacity, Significantly Reducing ...
Sometimes, a slight ammonia smell is detected in water-based acrylic emulsions, which confuses many people: is this normal or is there a problem? First, we need to clarify that acrylic emulsions themselves do not produce an ammonia smell. However, during their production, ammonia-containing additives may be added to adjust their performance or improve their stability. These additives gra...
Seeking a packaging seal that balances both strength and eco-friendliness? Water-based acrylics offer the perfect "best-of-both-worlds" solution! As a core raw material for sealing adhesives, they are widely utilized across diverse packaging applications—including food, express delivery, and daily chemical products. Whether applied to paper boxes, plastic bags, or composite film materials, they en...
Choose the Right Adhesive: Making Packaging Both Beautiful and Durable The aesthetic appeal and durability of printed packaging hinge on a crucial—yet often overlooked—element: the adhesive used. From the everyday shipping boxes and food packaging we receive, to high-end gift sets for tobacco and spirits, every bonded joint relies on the support of specialized adhesives. Selecting the right adhesi...
Water-based Clear Primer for Printing: Addressing Insufficient Ink Adhesion on Gold and Silver Cardboard The use of a water-based clear primer on gold and silver cardboard to resolve issues of insufficient ink adhesion is achieved primarily through the following mechanisms: Improving Surface Tension The surface of gold and silver cardboard is typically smooth and possesses low ...
Removable adhesive labels are widely used in modern packaging, product identification and temporary labeling applications. Unlike permanent labels, removable labels can be applied firmly during use and removed cleanly when needed, helping brands improve product presentation, user experience and packaging flexibility. In many industries, removable labels are required not only to provide clear infor...
When manufacturing labels, the choice of adhesive backing is just as crucial as the face material and print quality. Whether a label adheres firmly, resists edge curling, or leaves behind residue upon removal often depends heavily on the adhesive applied to its backing. The adhesive commonly used on the back of labels is known as pressure-sensitive adhesive (PSA). This type of adhesive requires ne...
As carbon reduction and circular economy continue to gain momentum worldwide, the packaging industry is paying more attention to material recyclability and recycled material value. For PET bottles, food trays, and household product packaging, labels are not only used for brand display, but also play an important role in the recycling process. In traditional recycling systems, label adhesives that ...
Washable Labels Powered by Water-based Adhesives: Safeguarding High-Quality "Bottle-to-Bottle" PET Recycling Safeguarding a Green Future In the global effort to address climate challenges and plastic pollution, Sinograce Chemical remains steadfastly focused on the R&D and innovation of surface material products. We are committed to driving the circular economy through sustainable chemical solu...
PET plastic bottles are widely used in beverage, food, household chemical, personal care, and many other packaging applications. Although PET has high recycling value, label materials and adhesive residues can still affect the washing, sorting, and reprocessing quality of recycled PET flakes during the actual recycling process. Traditional label adhesives are often difficult to remove completely d...
For coating and surface material applications, product performance depends on many real production factors. Laboratory testing is important, but actual customer feedback can provide more direct information about coating process, substrate condition, curing performance, adhesion, abrasion resistance, and final surface quality. Recently, the Sinograce Chemical team completed overseas customer visits...
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Sinograce Chemical is professional technical enterprise providing solutions of surface materials and manufacturing of raw materials. Sinograce Chemical Company is composed of R&D center, Manufacture center, Quality control department, Market center and International trade department. We have been dedicating to research on excellent paint/coating, adhesive for over 15 years. And now still conti...
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