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SKS Bottle & Packaging 28th Anniversary


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Tamper Evident Containers

Tamper evident packaging helps consumers identify whether or not a container has been opened prior to purchase. Tamper evidence is vital for a number of industries, from food and beverages to industrial chemicals and pharmaceuticals. While using tamper evident closures does not make a product tamper-proof, it can give customers peace of mind that the products they are buying have not been altered after leaving the manufacturer.

SKS carries a wide variety of products that can be used to create a tamper evident container. Choose from shrink bands, tamper evident closures, caps with plastisol liners, PS 22 liners and induction liners.


Quick Reference

Use the chart below to compare the benefits and disadvantages of our tamper evident packaging options.

  Shrink Bands Tamper Evident Caps Plastisol
Lined Caps
PS-22
Lined Caps
Induction
Lined Caps
Price $ $$ $$ $$ $$$
Sizes Offered See compatibility chart 18/415, 28 mm 38 mm - 82 mm 53/400 - 89/400 33/400, 38/400 & 45/400
Equipment Required Heat Gun
or hair dryer
none hot-fill product none Induction Sealing Machine
SKS' Compatible Container Materials Plastic X X   X X
Glass X X X   X
Metal X        
Advantages
  • Inexpensive
  • Compatible with a variety of containers & materials
  • No equipment needed
  • Tampering is easily observed
  • Tampering is easily observed
  • Allows for longer product shelf life
  • Inexpensive
  • Easy to use
  • No equipment needed
  • Provides a leakproof, hermetic seal
  • Guaranteed tamper evidence with proper equipment use
Disadvantages
  • Can sometimes be removed without breaking
  • Application can be somewhat time consuming
  • Few neck finish sizes offered
  • Container must have lip to hold ring, otherwise cap can be removed intact
  • Product must be properly heated and cooled
  • Most time consuming method
  • Does not provide a leakproof or airtight seal
  • Expensive
  • Induction sealing equipment needed for proper seal
Click to Buy Shrink Bands TE Caps Plastisol
Lined Caps
PS-22
Lined Caps
Induction
Lined Caps

Shrink Bands

Shrink Bands

Shrink bands are an economical way to offer customers tamper evident containers. Our tamper evident shrink bands are made from 0.2 mm thick PVC plastic and are perforated for easy removal. Once removed, the shrink band cannot be reapplied to the container. Shrink bands are easy to use: simply slide the band over your container and cap and apply even heat until the band has shrunk snugly around your product.

The most important thing to remember when using shrink bands is to select the correct size for your container. This eliminates the possibility that the band can be removed intact. We stock an extensive selection of shrink bands in several colors that are compatible with many of our containers. To find a compatible shrink band for your container:

  1. From the container’s product page, click on "Add-ons" to the right of the item and a dropdown menu will display any compatible shrink bands
  2. View our Shrink Band Compatibility Chart, which lists each shrink band stock number along with all corresponding containers

If you are unable to find a shrink band on our website that is compatible with your container, we can help! SKS can produce custom shrink bands and sleeves in unique sizes, colors and materials to suit your needs. View our custom shrink band services page to learn more. For tips and further instruction, visit our shrink band information page.

Buy Shrink Bands


Tamper Evident Caps

Each of these ribbed plastic caps features a frangible ring attached to the bottom of the cap skirt. A compatible bottle will have a lip below the bottle’s neck finish. The ring will break away from the cap and remain on this lip when the cap is unscrewed. Once this connection has been broken, the components cannot be reattached.

Tamper Evident Caps

Buy Tamper Evident Caps


Plastisol Lined Caps

Metal Plastisol Lined Caps

These metal caps feature a ring of plastisol material applied where the lid and container opening would meet. When heated to proper temperatures, the plastisol liner will soften and melt around the container's opening. As it cools, the plastisol solidifies and forms an airtight seal between the cap and container.

Often, these caps include a raised, tamper evident button in the center. As the container cools, the internal pressure is reduced and causes the button to depress. When the cap is removed, the pressure inside the container is neutralized and the button pops back up. A properly sealed, unopened container will have a flat button and will be difficult to open – the broken seal will produce a loud "POP."

If the button is raised at the point of purchase and the cap can be removed silently, the container has already been opened.

Because these closures must withstand high heat in order to function properly, it is recommended that they be used with glass containers only.

Buy Plastisol Lined Caps with Buttons


PS-22 Lined Caps

PS-22 Lined Caps

A PS-22 lined cap features a pressure sensitive foam liner that remains on the container once the cap has been removed. The outside of the liner is coated with adhesive, which adheres to the container when the cap has been properly torqued. The liner leaves residue on the container’s opening once it has been peeled off and it cannot be reapplied.

PS-22 lined caps are ideal for products that have a short shelf life or are non-perishable, as the liner's adhesive does not provide an airtight seal. These liners are an economical choice to provide tamper evidence for some foods, pharmaceuticals and bath & body care products. If your product requires a strong, hermetic seal, we recommend using induction lined caps and an induction sealing machine (see below).

Buy PS-22 Lined Caps


Induction Lined Caps

induction Lined Caps

Induction lined caps provide superior leak protection and help ensure product freshness with a hermetic seal. The induction liners have several layers: pulpboard or PE foam, wax, foil, and a polymer coating. When passed through an induction machine, the heated foil melts the wax and polymer, creating a hermetic seal with the container when solidified. Once the liner has been peeled off the container, it cannot be reapplied. It also leaves a residue around the container opening, indicating that the seal has been removed.

An induction sealing machine must be used in order to create an airtight seal. For more information or to purchase an induction machine, click here.

The liners of our stock induction caps are backed with polystyrene foam and are printed with the text, 'Sealed for Your Protection.' These caps are compatible with polyethylene (HDPE & LDPE), polystyrene, PET, PVC & glass containers.

Buy Induction Lined Caps


Container Compatibility

Browse the chart below to find compatible containers for each tamper evident cap style.

Tamper Evident Cap Size Compatible Containers
Black TE Caps w/ Orifice Reducers
White TE Caps w/ Orifice Reducers
18/415 5 ml - 100 ml Amber Glass Euro Dropper Bottles
5 ml - 50 ml Blue Glass Euro Dropper Bottles
5 ml Amber Glass Bottles
Black TE Caps 18 mm 50 ml Clear PET Nip Bottles
Black TE Glass Dropper Caps 18/415
(62 mm pipette)
10 ml Amber Glass Euro Dropper Bottles
10 ml Blue Glass Euro Dropper Bottles
18/415
(82 mm pipette)
30 ml Amber Glass Euro Dropper Bottles
30 ml Blue Glass Euro Dropper Bottles
Black TE Caps w/ Pouring Inserts 28 mm 100 & 250 ml Amber Glass Flasks
Gold Metal Plastisol Lined Caps w/ Buttons
White Metal Plastisol Lined Caps w/ Buttons
Printed Gold Plastisol Lined Caps w/ Buttons
Silver Metal Plastisol Lined Caps w/ Buttons
70 G (70/450) 16 oz Clear Glass Mason Jars
16 oz Clear Glass Mayo Jars
8 oz Clear Glass Jelly Jars
Black Metal Plastisol Lined Lug Caps 58 mm 4 & 6 oz Clear Glass Hexagon Jars
6 oz Clear Glass Oval Hexagon Jars
6 oz Clear Glass Square Jars
63 mm 9 oz Clear Glass Hexagon Jars
9 & 12 oz Clear Glass Oval Hexagon Jars
9 oz Clear Glass Square Jars
Black Disc Top Caps w/ PS-22 Liners
White Disc Top Caps w/ PS-22 Liners
20/410 & 24/410 Most 1-16 oz Plastic Bottles
White Caps w/ PS-22 Printed Liners
Black Caps w/ PS-22 Printed Liners
Natural Caps w/ Plain PS-22 Liners
53/400 4 oz Natural HDPE Jars
2 oz Natural Polypro Jars
2 oz White Polypro Jars
1 oz White Polypro Double Wall Radius Jars
1 oz White Polypro SS Double Wall Jars
1 oz Black Polypro SS Double Wall Jars
2 oz Frosted Polypro Thick Wall Jars
50 ml Blue Glass Jars
2 oz Frosted Glass Jars
2 oz Clear Glass Jars
6 oz Clear Glass Paragon Jars
58/400 2 oz White Polypro Double Wall Radius Jars
2 oz White Polypro SS Double Wall Jars
2 oz Black Polypro SS Double Wall Jars
2 oz Clear, Blue, & Amber PET Heavy Wall Jars
4 oz Clear, Blue, Amber, & Green PET SS Jars
4 oz Natural Polypro Jars
4 oz White Polypro Jars
8 & 12 oz Clear Glass Paragon Jars
4 oz Clear Glass Jars
4 oz Frosted Glass Jars
70/400 4 oz White Polypro Double Wall Radius Jars
4 oz White Polypro SS Double Wall Jars
4 oz Black Polypro SS Double Wall Jars
4 oz Clear, Blue, & Amber PET Heavy Wall Jars
8 oz Clear, Blue, Amber, & Green PET SS Jars
4 & 8 oz Clear PET Square Jars
1 & 2 oz White Polypro Thick Wall Jars
4 oz Frosted Polypro Thick Wall Jars
8 oz Natural HDPE Jars
8 oz Natural Polypro Jars
8 oz White Polypro Jars
8 oz Clear Glass Jars
89/400 8 oz White Polypro Double Wall Radius Jars
8 oz White Polypro SS Double Wall Jars
8 oz Black Polypro SS Double Wall Jars
8 oz Clear, Blue, & Amber PET Heavy Wall Jars
12 & 16 oz Clear; 16 oz Blue, Amber, & Green PET SS Jars
16 oz Clear PET Square Jars
4 oz White Polypro Thick Wall Jars
16 & 32 oz Natural HDPE Jars
8, 12 & 16 oz Natural Polypro Jars
8, 12 & 16 oz White Polypro Jars
16 & 32 oz Clear Glass Jars
White Ribbed Induction Lined Caps 33/400 60 cc Natural HDPE Pharm Rounds
75 cc White HDPE Pharm Rounds
2 oz Clear PET Square Bottles
1 oz Clear Glass Paragon Jars
1 oz Clear Glass Jars
1/4 & 1/2 oz Natural Polypro Jars
1/4 & 1/2 oz White Polypro Jars
1/2 oz Clear, Blue, Amber, & Green PET SS Jars
32 oz Clear Glass & Amber Glass Round Bottles
60 cc Amber Glass Pharm Rounds
1 oz Clear Glass Pharm Rounds
1/8 & 1/4 oz White Polypro Thick Wall Jars
4 oz Clear Glass Square Bottles
1/8 & 1/4 oz Clear Styrene Jars
2 oz Clear PET Square Bottles
38/400 120 cc Natural HDPE Pharm Rounds
120 cc White HDPE Pharm Rounds
120 cc Amber Glass Pharm Rounds
4 oz Clear PET Square Bottles
8 & 12 oz Natural LDPE Cylinders
2 oz Clear Glass Paragon Jars
1/2 & 1 Gal White & Natural HDPE Jugs
1 oz Clear Glass Jars
1 oz Clear, Blue, Amber, & Green PET SS Jars
1/2 & 1 Gal Clear Glass & Amber Glass Jugs
1 Gal Natural HDPE F-Style Jugs
45/400 250 cc Amber Glass Pharm Rounds
250 cc Natural HDPE Pharm Rounds
150, 200 & 250 cc White HDPE Pharm Rounds
8 oz Clear PET Square Bottles



Friday 28 November, 2014