Growing preference for laminating adhesives to cans for food packaging

《Growing preference for laminating adhesives to cans for food packaging》:

Quick, tasty and convenience are the buzzwords when one thinks of ready-to-eat or frozen food. With the rise in disposable income, exposure to the world food cuisine and changing lifestyle, the demand for variety in frozen food is on a rise. The time crunch due to hectic work life is also adding up to the dependence on ready-to-eat foods in the country.

The key value is the benchmark set up in the flexible packaging industry all along the value chain. Under this value chain, the parameter is to protect the quality and reduce the cost effectively. So here comes the use of the laminating adhesives, which are expected to provide ease of use, speed, safety and enhanced productivity to converters for a better bottom line. The new-generation products act as curing agent and are usually a two-component, and solvent less polyurethane adhesive for flexible packaging laminating. The adhesive cures to full physical and regulatory compliance levels within 48 hours and is very stable. It has an extremely long pot life, is very easy to use and work with, and provides a level of confidence that the industry has been looking for.

Size of market
The Indian frozen food market is estimated at Rs 1,500 crore and is expected to reach Rs 3,750 crore, in the next five years, as per the research report by Frost & Sullivan. Not just the metro cities, but even from tier II and tier III cities are witnessing demand in the ready-to-eat and frozen food items which does not just restricts to frozen peas and ice creams but have grown up to exotic vegetables and the array of ready-to-eat snacks. While, the need of the hour for the F&B brands is to offer the variety to the customer, they also simultaneously need to maintain hygiene that has compelled them to innovate and equip themselves with safe and healthy packaging styles, flexible packaging being the most important one.

Flexible packaging
The flexible packaging industry has grown from the era of rigid packaging, cans and paper containers and has been replaced by a new generation of laminating adhesives. The technology used not only protects foods from external influences, but also exclude contamination from hazardous substances in the packaging materials themselves. Adhesives like Liofol are solvent-free reactive polyurethane adhesives which are odourless, cost- efficient and have low energy requirements has brought breakthrough in the market. 

With growing purchasing powers and rapid development in retail sector, India is poised for huge growth within the retail sector. With only 5% of food currently packaged, and FDI allowed moving into retail in the country only last year, the opportunities in flexible packaging are clearly enormous. The Indian Flexible Packaging Market 2011 shows India represents a US$3 billion market that is expected to continue growing at around 15% a year until 2015.

Adhesive
Adhesive, the term visualises the glue stick, the tape or the sticky semi-liquid tube that we have been using for crafts or household requirements ever since we were kids. But this semi- liquid bonding material has found a common place in everyone’s life today, which is way ahead when it comes to application and usage, than we might know about it. From the wrapper of your favourite wafers to the ready-to-eat meal that you pick, everything has a binding story with adhesives.

Designed for ready-to-eat meals, soups and other snack food applications, this adhesive adheres well to many substrates, including barrier films and surface-treated films for mono web and laminated structures. When we talk about lidding material you expect it to do much more than covering your scoop, there come heat sealant and cold sealant or melts. Cold seal coatings that include a wide range of low odour, natural latex-based products that provide advantages to both printers and end-users.

Innovations in release coatings and synthetic cold seal technology have extended the product portfolio. Now 100% latex-free cold seal coating with synthetic cold seal technology is an excellent option for today’s usage. Apart from delivering excellent printability, it has low odour, aggressive tack or low tack, product resistance and longer shelf life with peel & reseal for packaging. There are options like food safe heat-sealant coatings and cold seal. Heat-seal coatings are widely used for frozen desert cups, flavoured yogurt and so on, and these heat- seal coatings can withstand pasteurisation and provide convenient easy peel benefits to the consumer. In addition, cold seal coating provides clean wipe, low foam, high bond strength, long shelf life, good shear stability, and compatibility with release films and lacquers. 

Cold seal coating
Accordingly, this adhesive has been formulated to further optimise the cold seal coating process by reducing application issues and scrap. Meanwhile, talking about operators running cold seal coatings at high speeds often face foaming in the pan, coagulation at the blade and build-up on the cylinder and this forced to clean up overflow from the pan, or worst yet, to stop the extruder and address those issues. This adhesive runs at line, speeds up to 1,000 fpm without those problems and produces quality finished goods. Coating weights are more consistent and streaking is virtually eliminated. And with an extended shelf life of up to six months for drums and totes, scrap from expired product is minimised.

For ice cream treats, films used are characterised by low hot slip and excellent packaging and print performance. Such films offer high yield among white opaque films for packaging of ice cream and frozen novelty treats.

For water-based treats such as ice pops, chemical solvents are used which provide translucent look that permits flavour visibility without highlighting crystal imperfections.

Such paper ice cream cups with lids happen to be found in diverse shapes, designs as well as colours. Paper cups that are personalised can also be made. The ones that are personalised are the ones where the consumers must place the order for the designs that they wish for. They have their own distinctive style. 

So, next time when you put the ready-to-eat meal in the microwave and trash the pack with no patience, do keep aside a thought for how it is processed to provide you a healthy and safe meal.

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