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Heat Induction Seals | Capless

Capless Heat Induction Seals

Heat induction seals are cap lining materials found between the cap and the mouth of the container. These heat seals keep the freshness of the product by keeping moisture and oxygen from infiltrating the product. They act to prolong the product’s shelf-life and prevent any leakage. An added benefit is the tamper evidence provided by induction foil sealing in order to protect the consumers from any outside disruption.

Many industries make use of heat induction seals. Food and beverage industries are some of the foremost users because with the globalization of exportation and importation of their products, manufacturing and distribution could possible disrupt product integrity at any point in the process. Any issues during handling can lead to catastrophic results for both the manufacturer and distributor, and so, having heat induction seals to protect these products are a lifesaver.

In the pharmaceutical industry, induction seal liners are also of utmost importance. For these kinds of products, the need for adequate tamperproofing and tamper-evidence cannot be overstated. The heat seals are so important that the Food and Drug Administration (FDA) even has set guidelines for tamper-evident seals, all for the benefit of the consumer.

Other industries also make full use of induction seal liners. For cosmetics, heat induction seals help preserve freshness of the product while also keeping the processing of the cosmetics sanitary. In agriculture, chemicals which were once difficult to contain safely, are now easily contained and distributed. Certain types of induction seal caps are capable of withstanding the abrasive properties of chemicals, thereby allowing for proper sealing of these materials.

The Induction Sealing Process

Heat induction sealing begins with the acquisition of the caps and their associated liners. These caps make their way to the production line and, along with the already-filled containers, continue through the conveyor belt until they reach the heat induction sealing head. This component generates an electromagnetic field which can permeate the cap and the aluminum foil layer found within the induction liner. The field is able to generate enough of an electric current to melt the part of the liner in contact with the mouth of the container, effectively sealing the product and preventing any contamination of the products therein. The container then cools down as it continues down the line.

Key Benefits to Induction Sealing From Benefel Pty Ltd. and Adeneli Packaging

The sealing process can lessen incidence of product contamination at any point in the production chain.
Heat induction sealing can add significantly more force when pressing the liner onto the container opening than what conventional induction sealing can provide. This results in a much better and more even contact of the liner.
100% visual inspection of the heat induction seal for quality assurance purposes is possible.
On request, the seal integrity can be increased even more by dead-folding the edges of the seal around the lip of the container.
Heat induction sealing can eliminate the need for multi-layer cap lining or a separate foam liner placed in the cap.
Dust issues associated with multi-layer cap lining material can be eliminated with the use of heat induction sealing instead.
Direct purchase of the cap lining material means that there are no markups or extra charges on your end.
We can organize for your own logo or print message to be placed onto the heat induction seal, all at a very competitive price.

Benefel Pty Ltd. and Adeneli Packaging

Our teams at Benefel Pty Ltd. and Adeneli Packaging can help you with your heat induction seal needs. Our experts are on standby to take your calls and chats. Whatever product you may have, we have the perfect liner material for you. Product consultation is free and we are happy to develop partnerships with our customers by supplying consumable products that work well with packaging machinery.

Sealing Glass Jars with Metal Lids

Sealing Glass Jars through Capless Induction Sealing

When it comes to sealing glass jars, specifically those with metal lids, a big hurdle is adequate sealing. In the past, this task was insurmountable, and for many years, the induction sealing process was limited to plastic containers with plastic caps. These days, with the introduction of more wattage in better-functioning equipment, sealing glass jars is possible with capless induction sealing.

This type of process allows seals to be leak-proof, making handling and transportation of said products easier on everyone involved. The induction seals are hermetically generated and are able to prevent the products from being affected by outside moisture and oxygen fluctuations. This keeps the contents fresh for longer, able to meet and even extend the shelf-life of the product. An added advantage is its tamper evidence. The nature of the seal itself allows for any disruption to be easily noticed, for the benefit of the consumer.

These aspects are time-tested and proven advantages of induction sealing. As such, the public puts their trust towards these products. And now, with the innovation of capless induction sealing of glass jars, more and more avenues are being opened up for different industries.

Sealing Products with Metal Lids

When product manufacturers choose to use metal lids instead of the more conventional plastic type, the induction process must be adapted to suit their needs. The classic induction process finds its liners inserted within the cap of the container. These components pass under an induction sealing head which generates an electromagnetic field which can permeate the cap of the container without damaging it. This field generates enough electric current to melt part of the liner, adhering it firmly onto the mouth of the container. The now-capped container then cools as it makes its way down the conveyor belt.

The downside of the traditional induction sealing process is that it cannot be used when the container comes with a metal lid. This is why these types of containers require a special mode of induction sealing process.

Through capless induction sealing, this problem has been remedied. An additional component is added to the equipment in order to apply the necessary pressure onto the liner while it is being adhered on the lip of the container. These additional sealing heads may come in different configurations, e.g., single or multiple heads. The sealing head is able to generate enough heat and pressure to adequately seal the container even without a cap.

Through this technology, as with induction sealing in general, many industries have branched out into international trades and commerce. The food and beverage industry is a foremost user of cap liners because of the freshness guarantee that comes with these products. The prolonged shelf-life also allows for international export without the issue of spoilage or leaks.

Another industry that makes full utilization of induction liners is the pharmaceutical industry. With the necessity of tamper evidence in mind, these seals are invaluable in packaging for these companies.

In the cosmetics industry, having properly sealed glass jars are not just for aesthetics, but also serve to prevent product contamination and help with handling of the products.

In the agricultural sector, these seals allow for containment of corrosive substances such as alkalis, acids and solvents, without compromising the safety of consumers.

Benefel Pty Ltd. and Adeneli Packaging

Our teams at Benefel Pty Ltd. and Adeneli Packaging can help you with your sealing glass jars needs. Our experts are on standby to take your calls and chats. Whatever product you may have, we have the perfect liner material for you. Product consultation is free and we are happy to develop partnerships with our customers by supplying consumable products that work well with packaging machinery.

Glass Liners for Sealing Glass Jars

Glass Liners in The Demand for Glass Jar Packaging

The appeal to use glass packaging is now more prevalent than ever. More and more people have become environmentally inclined to cope with consumerist practices, and subsequent manufacturing protocols, have followed suit. And when it comes to packaging in glass, one of the biggest hurdles for manufacturers is glass liners.

For many environmentally-conscious individuals, the appeal of glass-packed products is partly due to the wanting that said product not be tainted by plastic contact. Consumers are looking for purity in products and most likely align themselves with the goals of environmental awareness and sustainability. A big plus is that glass packaging is easily recycled and upcycled. If packaging can be repurposed or go on to serve a purpose well beyond a single use, then that is ideal.

With the widening usage of this type of packaging, improvement of glass liner technology is an inevitable need that must be met.

Traditional Glass Sealing

The uses of glass liners are three-fold:

A barrier for outside elements upon opening of the product
A form of tamper evidence
A seal to prevent leaking

Classically, almost all glass packaging had a neck with a thread to allow for the placement of a cap. More often than not, this cap was made of metal, thereby eliminating the prospect of using induction sealing for these products.

The induction sealing process usually works with a cap holding the induction sealing liner. This cap is then passed under a high-frequency oscillating magnetic field to adhere the components to one another. This process, however, does not work with metal caps as the metal interferes with the magnetic field.

In order to achieve the necessary uses of the glass liner, traditionally-used technology included heat shrink bands and tamper-evident labels. These two brought their own sets of challenges.

Heat shrink bands are difficult to apply in production and are even more difficult to remove once in the hands of the consumer. They have also been known to “collect” dust from the surroundings, making them less than appealing for end users. They even have the added disadvantage for the modern environmentally-conscious consumer: they are made of plastic. Ironically, when purchasing this glass-packaged product, the consumer will first have to remove the heat shrink band before they can even have access to the product.

Tamper-evident labels, on the other hand, are applied to the lid and serve as proof of any tampering with the product. They are used in the food and pharmaceutical industries for the benefit and safety of consumers.

Tamper-evident labels, along with heat shrink bands, are added on and do not serve the purpose of preventing leaks on their own. As such, it was very difficult for manufacturers to incorporate them with glass liners in order to achieve all three goals of liners. This lack of leak-proofing generally limited the use of glass packaging to dry powders and goods. Connected to this was the difficulty that liquids, especially oils, added to the equation. Previously, many liners would deteriorate with prolonged contact with the products. Their rims would gradually lift off of the glass container’s mouth, leading to issues with the integrity of the liners and the loss of trust of the consumers in the safety of the product.

New Technology in Glass Liners

With the advancement of technology, there is now newfound flexibility in glass jar seals. The improvement comes in time with the increased reliance on glass packaging, allowing said consumers to keep their values when they purchase products sealed with the now more reliable glass liners.

This new technology in glass liners now allows manufacturers to cater to a wider variety of products to package in glass: anything from coffee that needs its freshness maintained, to gel capsules that need tamper evidence, all the way to vegetable oils which proved hard to seal in the containers of the past.

Benefel Pty Ltd and Adeneli Packaging

Our teams at Benefel Pty Ltd. and Adeneli Packaging can help you with your glass liner needs. Our experts are on standby to take your calls and chats. Whatever product you may have, we have the perfect liner material for you. Product consultation is free and we are happy to develop partnerships with our customers by supplying consumable products that work well with packaging machinery.

Our Complete Range

Glass Jar Seal and Glass Induction Sealing with SealerOn™

Traditional glass jar seal techniques no longer cut it when it comes to the average consumer’s needs. More and more people value a product’s longevity through the provision of reliable oxygen and moisture barrier. Along with this is the necessity for tamper evidence, particularly for products such as food and pharmaceuticals. And for the benefit of everyone involved in the process of product procurement, all the way to consumption of the said product, a leak-proof approach is more than necessary.

In the past, glass jar seals were often quite unreliable. Consumers faced the dilemma of sub-par seals or foil seals that made it too difficult to get to the product itself. For the part of the manufacturer, the process of adhesion of the seals onto the glass containers was very daunting and more often than not, ended up with inadequate results. Manufacturers were forced to rely on heat shrink bands to achieve a seal that kept the product within the container but these bands were too finicky for consumers to remove. These issues have now been remedied, thanks to glass jar sealing technology.

Many consumers prefer to purchase products in glass jars. They often do so with the thought that glass is more premium packaging over plastics as the glass is viewed to preserve the “purity” of the product. They also rely on this packaging to be of more environmental benefit and can easily be separated for recycling. As such, the need to make our customers’ lives easier is a foremost demand in almost any industry.

Primitive Glass Bottle Sealing

Older technology for sealing glass jars made use of heat shrink bands and unreliable universal induction foils.

Heat shrink bands can be a fickle tool to use. On the production side of things, applying heat shrink bands onto the glass jar can be a tricky and sometimes dangerous setup. It involves high-temperature heat guns, blowers, or steam tunnels. It also deals with a lightweight film that could come either in individual pieces or in tube form. This film format necessitates consistent placement and finishes which can be arduous to have to meet each time.

For clients, heat shrink bands can bring a very unfriendly user experience. These bands are difficult to remove. And with the idea in the consumers’ minds that “glass = good for the environment,” having to remove a piece of transparent PVC plastic the very first moment they need to use the product, can be quite off-putting.

On the other hand, some manufacturers decided to use universal induction foils for glass sealing. Even at the time, these induction foils for glass had already been available for a long while. However, this technology proved to be effective mainly for dry products and powders only. Wet or oily products can initially appear to be sealed with said foils, but over time, what looked like well-sealed products ended up having a foil that lifted off the sealing rim “on its own.”

Now, in a time when consumers value good quality and trust in the products they use, having foil seals for bottles that detach themselves from the glass jar can be detrimental to sales.

Glass Liners

In recent years, there have been advances in glass jar sealing. Innovation in the field has now given manufacturers the opportunity to seal not just dried goods in glass jars, but also wet and/or oily products such as coconut oil. With our team’s solutions, we are also able to cater to this growing demand both from manufacturers and their consumers.

Benefel Pty Ltd and Adeneli Packaging

Our teams at Benefel Pty Ltd. and Adeneli Packaging can help you with your glass jar seal material. Our experts are on standby to take your calls and chats. Whatever product you may have, we have the perfect liner material for you. Product consultation is free and we are happy to develop partnerships with our customers by supplying consumable products that work well with packaging machinery.

Affordble Induction Machine

Tamper Evident Jar Labeling - LabelOn™

Our Complete Range