Liners

Selector guide – liners

Liner selection affects the ‘PROTECT’ function of packaging. Proper selection is a sensitive process that should include compatibility with:

  • Product
  • Container
  • Production environment
  • Handling
  • Customer interaction

Here is a quick reference guide on most common liners. Roda Packaging recommends proper testing to validate your selection. And do not hesitate to contact us for technical questions!

Induction Liners Residual Paper Peel
Induction Liners Clean-Peel Removal
Pressure-Sensitive Barriers

Induction Liners – Residual Paper Peel

FS5-4

One piece board backed heat induction foil innerseal which combines ease of removal with tamper-evident (TE) properties. It is suggested for sealing to polyethylene, polypropylene, PET, PVC, polystyrene, and properly treated glass containers. This material will vent gas through the paper layer. Recommended for dry products only. Printed with "Sealed For Freshness". It is designed for use in plastic caps in conjunction with induction heat sealing equipment.

Induction Liners – Clean-Peel Removal

FS3-19

(0.008" backing, 0.001" foil, 0.0005" heat seal): Recommended for dry and liquid products. One piece board backed heat induction foil innerseal that will provide an aggressive bond with clean peel removal from PET and PVC containers. Printed with "Sealed For Freshness". It is designed for use in plastic caps in conjunction with induction heat sealing equipment.

FS3-25

(0.008" backing, 0.0005" foil, 0.0005" heat seal): Recommended for dry and liquid products. One piece board backed heat induction foil innerseal will provide an aggressive bond with clean peel removal from PET and PVC containers. Printed with "Sealed For Freshness". It is designed for use in plastic caps in conjunction with induction heat sealing equipment.

FS5-9

(0.008" backing, 0.001" foil, 0.001" heat seal): Recommended for some dry and some liquid products. One piece board backed universal heat induction foil seal that will seal to all container materials with varying degrees of adhesion. Printed with "Sealed For Freshness". It is designed for use in plastic caps in conjunction with induction heat sealing equipment.

Lift 'n' Peel

(0.001" polyester top film, 0.002" polymer adhesive layer, 0.0005” polyester tabs**, 0.005” polyolefin foam, 0.001" aluminum foil, 0.00118" sealable polyester film): Recommended for wet or dry products. "Lift 'n' Peel" is a one piece top-tabbed induction innerseal that incorporates an easily gripped semi-circular tab as an easy-open feature.

The tab is attached to the top of the innerseal disc facilitating easy removal of the membrane from the container in one piece by pulling upward. The balanced sealing properties of this structure provide ease of removal as well as a secure seal. LPM is designed to seal to HDPE, PP, PET, PP, PS, and glass.

It is designed for use in plastic caps in conjunction with induction heat sealing equipment. Liner is randomly printed with a "Lift 'n' Peel" message.

An enhanced value proposition for all nutraceutical offerings.

Pressure-Sensitive Barriers

PS113 FOAM

(0.020" polystrene foam, 0.002" adhesive): This product has been designed primarily for packaging dry food and drug products. A thin gauge uniform polystyrene foam inner seal coated on one side with a specially formulated torque activated adhesive. This product exhibits a minimum of surface tack which minimizes roll blocking and facilitates punching and insertion of the inner seal disc into bottle caps. When used with either metal or plastic caps, and properly torqued, it provides excellent adhesion to the tops of glass and plastic containers. It is simple to use and seals in freshness. No special equipment is needed, as this liner can be capped by hand or at a slow speed. Printed: "Sealed For Freshness”.

PSF-1 FOIL

(0.020" polystyrene foam, 0.001" aluminum foil, 0.0005" polyester film, 0.002" pressure sensitive coating): This product has been designed primarily for packaging dry food, spices, and drug products. A polystyrene foam / aluminum foil inner seal coated on one side with a torque-activated adhesive. This product exhibits minimum surface tack, which minimizes roll blocking and facilitates punching and insertion of the inner seal disc into bottle caps. When used with either metal or plastic caps, and properly torqued, it provides excellent adhesion to the tops of glass and plastic containers. It is simple to use and provides barrier properties to moisture, vapor, oxygen, and flavors if properly sealed to the bottle. No special equipment is necessary. Printed: "Sealed For Freshness".

Quick Troubleshooting Guide

  • Cleanliness of bottle edge and proper, consistent torque are the two most common areas affecting proper sealing of pressure sensitive closures.
  • Pressure-sensitive materials will adhere to surfaces it comes in contact with. If liner comes in contact with residues such as powders, plastic notch on the edge or simply too small of a contact area, than an improper seal will result.
  • For induction sealing, three main factors (The 3 T’s) may affect proper seal:
    • Torque or pressure
    • Temperature or heat
    • Time or speed
  • Improper torque is also another important factor. A quick rule of thumb is to use half the diameter as proper torque.
  • For example:
    • 53-400 closure requires torque of 25-30 inch/lbs

For additional info, please consult our partners’ site:

Selig Sealing Selig Liners PHT TechInfo / Liner Quick Reference Selector Guide 2015 Rev 01-2015

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