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Application and Development of Polyurethane Adhesive for Flexible Packaging Composite
Summary Polyurethane adhesive, as a key bonding material in soft packaging composite materials, has been widely used in food, medicine, daily chemical and other packaging fields because of its excellent performance. This kind of adhesive ensures the barrier, mechanical strength and durability of packaging materials by forming firm adhesion between different substrate layers of flexible packaging. Performance characteristics Polyurethane adhesive for flexible packaging has the following obvious...
Flexible packaging: the "flexible guardian" of modern life
In the supermarket shelves, in the mountains of parcels in the express post, soft packaging is everywhere with its light posture. This packaging form made of flexible materials is changing our way of life with amazing penetration and becoming a "flexible guardian" connecting production and consumption. Food industry is the most widely used field of soft packaging. From the soybean milk upright bag on the breakfast table to the nut aluminum foil bag in the office drawer; From the...
Advantages of flexible packaging
With the continuous development of modern packaging technology, flexible packaging has been widely used in food, medicine, daily chemical and other fields because of its unique advantages. Compared with traditional hard packaging (such as glass bottles, metal cans, etc.), soft packaging has the characteristics of portability, environmental protection and low cost, and has become an important trend in modern packaging industry. 1. Portable and easy to use. Soft packaging is usually made of...
Flexible packaging: the flexible revolution of modern consumption civilization
Stopping in front of the supermarket shelves, we can easily find a quiet change: glass jars, metal boxes and hard plastic containers are gradually giving way to various light and thin bagged and film-packed products. From snacks to shampoos, from fast food to pet food, soft packaging permeates every corner of daily life with its light posture. This flexible revolution in packaging materials is reshaping the basic form of modern consumer civilization. The rise of flexible packaging first stems...
Flexible packaging printing: the exquisite art of modern packaging industry
In a dazzling array of supermarket shelves, those soft packaging products with bright colors and exquisite patterns are always the first to attract consumers' attention. As an important part of the packaging industry, soft packaging printing has penetrated into every aspect of our daily life, from food packaging to medical supplies, from daily chemical products to electronic products, all of which reflect the exquisite and charm of this technology. There are significant differences between...
Ink printing: the invisible pusher of civilized communication
In the long river of human civilization development, ink printing is like a silent lightning, illuminating the road of knowledge dissemination. This technology of transferring words and images to the substrate through ink has been closely linked with the progress of human civilization since its birth. From the ancient block printing in the east to the movable type revolution in Gutenberg in the west, ink printing has been evolving and has become an important force to push mankind out of the...
Ink printing: the invisible pusher of civilized communication
Today, with the digital technology sweeping the world, ink printing still maintains irreplaceable cultural value. This ancient technique, which originated in the Sui and Tang Dynasties in China, achieved the most lasting media revolution in the history of human civilization communication through the physical process of transferring ink to the substrate. Modern ink printing has developed four mature processes. Offset printing occupies a dominant position in the field of book printing by virtue...
In the field of consumer goods packaging, soft packaging is gradually replacing traditional hard packaging and becoming the mainstream choice in the market because of its portability, durability and high cost-effectiveness. As the core link of this transformation, flexible packaging printing technology combines the innovative achievements of material science and printing technology, which gives more possibilities for product packaging. The basis of flexible packaging printing lies in the...
Flexible packaging: the intelligent choice of modern packaging
In the fast-paced modern life, flexible packaging has become the first choice for packaging in various industries because of its portability, environmental protection and versatility. Whether it is food, daily chemical, medicine or electronic products, flexible packaging can provide efficient protection and convenient use experience, and at the same time conform to the global trend of sustainable development. Lightweight and flexible, improve efficiency Flexible packaging is made of film,...
Flexible packaging: the flexible wisdom of modern packaging revolution
On the supermarket shelves, those plastic bags, aluminum foil bags and composite film packages that can be easily extruded and deformed are changing the consumption experience of human beings in a silent way. As an important branch of packaging industry, flexible packaging has opened up a flexible road in the field dominated by traditional rigid packaging with its unique material characteristics and structural design. The most obvious advantage of flexible packaging lies in its excellent...
Bonding technology of polyurethane adhesive (Ⅱ)
3. Roughening treatment If the bonding surface is smooth, it is generally necessary to roughen it first to increase the contact area between polyurethane adhesive and substrate. Polyurethane adhesive permeates into the recesses or pores on the surface of the substrate, and after curing, it can be embedded like "nails, hooks and sticks", which can firmly stick the substrate together. Commonly used treatment methods include sand blasting, wood file coarsening and sandpaper grinding. However, if...
Bonding technology of polyurethane adhesive (I)
Polyurethane adhesive is a kind of adhesive with strong adhesion and excellent performance. It has excellent chemical adhesion with porous materials containing active hydrogen, such as foam, plastic, wood, leather, fabric, paper, ceramics and other materials with smooth surface, such as metal, glass, rubber and plastic. Polyurethane adhesive is often used in flexible packaging, automobile, construction and other industries. So, what are the bonding processes of polyurethane adhesives? 1....
Common adhesives for flexible packaging
At present, the commonly used composite adhesives in flexible packaging industry mainly include solvent-free adhesives, water-based adhesives and solvent-based adhesives. Developed countries in Europe and America attach great importance to environmental protection, and solvent-free adhesives and water-based adhesives are mainly used in the composite production of flexible packaging. In most countries in Asia and Africa, solvent-based adhesives are still the main soft packaging manufacturers....
Test method and evaluation standard system of chemical corrosion resistance of polyurethane adhesive
1.What is polyurethane adhesive? What are its characteristics? Polyurethane Adhesive (PU adhesive for short) is a kind of adhesive material with polyurethane resin as the main component. It generates high molecular polymers by the reaction of isocyanate groups with polyols or other active hydrogen compounds, thus achieving the bonding function. The following are the main characteristics of polyurethane adhesive: (1)Excellent bonding performance: it can bond metal, plastic, wood, glass and other...
Application of oily polyurethane resin in printing field
Oily polyurethane resin is widely used in printing field, and its excellent physical properties and chemical stability make it an important part of printing ink. The following is a concrete analysis of the application of oily polyurethane resin in the printing field: First, the role of ink components and resin binders Printing ink is mainly composed of resin binder, pigment (or dye), additives and solvents. As the "heart" of ink, resin binder mainly plays the role of dispersing pigments and...
The Important Role of Polyurethane Adhesive in Flexible Packaging Industry
The Important Role of Polyurethane Adhesive in Flexible Packaging Industry Polyurethane adhesive, as a high-performance adhesive material, plays an indispensable role in the flexible packaging industry. With the continuous improvement of consumers' requirements for packaging quality and the increasingly strict environmental protection regulations, polyurethane adhesive has become the preferred bonding solution in flexible packaging composite technology because of its excellent performance...
Market Applications of Waterborne Polyurethane Adhesives
Introduction Waterborne polyurethane (PU) adhesives have become a key material in various industries due to their eco-friendly properties, strong bonding performance, and versatility. As environmental regulations tighten and demand for sustainable solutions grows, these adhesives are increasingly replacing solvent-based alternatives. This article explores their market applications across different sectors. Key Market Applications 1. Automotive Industry Waterborne PU adhesives are extensively...
The Advantages of Water-Based Polyurethane Adhesives
Water-based polyurethane (PU) adhesives have become increasingly popular in various industries due to their unique properties and environmental benefits. This article explores the key advantages of using water-based PU adhesives, making them a preferred choice for many applications. 1. Environmentally Friendly One of the most significant advantages of water-based polyurethane adhesives is their eco-friendliness. Unlike solvent-based adhesives, which release volatile organic compounds (VOCs)...
The Rising Demand for Two-Component Solvent-Based Polyurethane Adhesives in the Global Market
In recent years, the global market for adhesives has seen a significant shift towards more versatile and high-performance solutions, with two-component solvent-based polyurethane (2K-PUR) adhesives emerging as a key player. This trend is driven by their superior bonding strength, flexibility, and resistance to environmental factors, making them an ideal choice for a wide range of applications across multiple industries. Market Overview According to a report by MarketsandMarkets, the global...
The Future of Food Packaging: Innovations in Polyurethane Adhesives
As smart and active packaging gains traction, next-gen polyurethane adhesives are enabling breakthroughs: Emerging Trends: Smart Labels: Adhesives compatible with RFID and freshness indicators. High-Speed Lamination: Faster curing for efficient production. Bio-Based PU Adhesives: Renewable raw materials for circular economy. The future of food packaging lies in smarter, safer, and more sustainable adhesive technologies—polyurethane continues to lead the way.
Overcoming Packaging Challenges with Polyurethane Adhesives
Flexible packaging faces challenges like delamination, moisture ingress, and chemical exposure. Polyurethane adhesives provide robust solutions for demanding applications. Problem-Solving Features: ✅ Strong Bonding: Prevents layer separation in multi-material films.✅ Chemical Resistance: Withstands oils, acids, and solvents.✅ Barrier Protection: Enhances shelf life by blocking oxygen and moisture. From stand-up pouches to vacuum-sealed bags, these adhesives ensure packaging performs under...
Sustainable Solutions: Eco-Friendly Polyurethane Adhesives for Flexible Packaging
Sustainability is reshaping the packaging industry, and eco-friendly polyurethane adhesives are leading the charge. These adhesives enable recyclable and compostable packaging structures without sacrificing performance. Green Benefits: Solvent-Free & Water-Based: Reduce VOC emissions. Compatible with Bio-Based Films: Supports PLA and cellulose-based packaging. Recyclability: Allows mono-material packaging designs. Brands seeking to meet ESG goals can leverage these adhesives to...
Ensuring Food Safety with High-Performance Polyurethane Adhesives
Food safety is non-negotiable in packaging, and polyurethane adhesives play a critical role in meeting regulatory requirements. These adhesives are formulated to resist migration, ensuring no harmful substances transfer to food products. Key Advantages: ✔ Low Migration: Minimizes risk of contamination.✔ Thermal Stability: Withstands sterilization (retort) and freezing.✔ Odorless & Tasteless: Preserves food quality. With strict global standards like FDA 21 CFR 175.105 and EU 10/2011,...
The Rising Demand for Food-Grade Polyurethane Adhesives in Flexible Packaging
The food packaging industry is rapidly evolving, with a growing emphasis on safety, durability, and sustainability. Food-grade polyurethane adhesives have emerged as a leading solution for flexible packaging due to their superior bonding strength, chemical resistance, and compliance with stringent food safety regulations. Why Polyurethane Adhesives? High Performance: Excellent adhesion to films, foils, and plastics. Food Safety: Compliant with FDA, EU, and other global standards. Versatility:...
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.