The Perfect Close

There are many methods of sealing available here at Lin-Pak. Ultrasonic plastic welding capabilities are used to seal plastics such as pouches or bags, foil pouches or foil containers, and also plastic tubes. Heat sealing is used to seal thinner plastics, such as thin ply film bags. We are also able to seal bottles, buckets, tubes and other various materials.

The closure on your container can make an important difference in the sales of your product. There was a time when a cap was just a seal. Those times have changed. The demand for interesting, appealing package designs that reflect the mood and purpose of the product is never ending. And now the closure you select becomes a coordinated extension of your package design and an appealing contribution to your merchandising.

Closures are available in a broad range of sizes and shapes, are made of many kinds of materials, are designed to be used with or without liners and often perform a special function-more than just sealing the container. A closure must properly seal the contents of the container on which it is used. Depending upon the product, this means a lot of different things and might include considering several of these factors:

  • Resistance to leakage
  • Resistance to solvents, acids, alkalis and other substances
  • Consideration of top load
  • Freedom from obectionable taste and odor
  • Maintaining a vacuum
  • Withstanding temperatures to which the product is exposed
  • Resistance to abuse in handling, shipping, and storing
  • Satisfying the specific needs of the product

The closure may have a tough assignment. To achieve the goal of a perfect close requires the matching of the right container to the right closure. It also means the closure, which is of the right type, is made of the right material and, when required, employs the right liner.

But that's just the beginning. A closure should also enhance the appearance of your product, especially if it is designed for the retail trade. Closures come in literally hundreds of colors and hues and can be decorated in a number of different ways.

There are so many different closures available that when you mate a container and a closure, neither one of which was custom designed, the ultimate package can be unique. Once decorated the result will be distinctively handsome, beautiful, striking, arresting-or whatever you want the product to "say" about itself.

Today's closures can do a good deal more than seal the package and look pretty. They can become an integral part of the product it contains. Here are some of the things a closure can do for you:

  • Provide evidence that the contents of the container was not tampered with before being opened by the user
  • Prevent accidental opening of the container by a child
  • Enables the contents to be dispensed through squeeze bottles
  • Facilitates spray applications
  • Allows the contents to be applied through a pump or trigger sprayer
  • Employ unique applicators such as a hair brush or dropper
And all of these application methods can still be done using a closure that provides a safe positive seal that can be used to ship the product.

Fitting the correct closure to a container is part science, part art and a large measure of attentiveness to customer needs. The Lin-Pak sales force is trained in understanding the science of the closure business. They also know how and where to research special problems.