Packaging 101

FH Packaging is one of the industry leader in providing accesible information regarding all of our containers. In the packaging industry one can get lost in the specifics of bottles and containers. We did our very best in providing you the break down of how a bottles neck is measured, to which liner and plastic is perfect for you. Here at FH we believe in “Better Innovation and Better Packaging”

In the packaging industry, the material around the neck opening of containers or the inside dimensions of its closure is referred to as “finish”. The type of finish is seen in a formats like: 20/410 or 20-410. There are two important parts to these formats: the first number refers to the diameter in millimeters and the second number refers to the thread count.

To get these measurements, you will first need to find the diameter (measured in mm). 

For a bottle:

Measure from the outer edge of the thread on one side to the outer edge of the thread on the opposite side. For example, if the neck measures 24mm, then it requires a 24mm closure as shown below:Bottle Neck Length

For a cap:

Measure from the inside wall of the cap to the opposite inside wall as shown below: Bottle Thread Lenght

Thread Count:

If the thread loops around the neck and passes over itself one time, then it is considered a 400 finish. If the thread passes over itself one and a half times, then it is considered a 410 finish.

If a thread passes over itself 2 times, it is a 415 finish. Below are examples of the most common thread counts:

We reccomend requesting samples and testing bottles with closures before making a purchase

Types of Liners or Seals

Types of Liner Spec Sheet Chart with L.L. Linerless Unlined or No Liner F217 (Tri-Seal) PS - PS-22 P.V - PULP/Vinyl P/VAF SA-66 P/PE PW Cone Liner P/RVTLF or PVLF P/AFPET P/O P/SF P/SOLVSEAL P/TEFLON PE P/WPW PLASTISOL P/TF 14b WHITE RUBBER f1410 P/AF HS (HEAT SEAL) Liners


  • A closure that has been engineered to function in specific application without the use of an additional liner.


  • Pulp board with wax coating on one side.


  • Solid extruded polyethylene.v


  • A closure with no special sealing features and no liner.


  • Cone-shaped solid polyethylene


  • White paper laminated to pulp board with a wax coating on the white paper

F-217 (TRI-SEAL)

  • A foamed low-density polyethylene core between two solid layers of LDPE


  • Vinyl coating applied to HDPE-coated white paper laminated to pulp board with lubricant film over vinyl


  • Vinyl chloride resin applied as a liquid and baked to a final form.

PS – PS-22

  • Pressure-sensitive adhesive coated on polystyrene foam.


  • Polyester film applies to aluminum, foil, poly bonded to paper and laminated to pulp board


  • Tin foil laminated to paper and bonded to pulp board


  • Vinyl laminated to pulp board.


  • Pulp and oilpaper


  • White vulcanized styrene-buta-dine rubber.


  • Polyester film laminated to aluminum foil bonded to pulp board


  • Pulp and Saran Film


  • Teflon/silicone rubber/ polypropylene film


  • Pulp and vinyl coated aluminum


  • Laminated pulp board


  • Aluminum foil laminated to paper and bonded to pulp board.


  • Polyethylene-coated white paper laminated to pulp board


  • Teflon on pulp board


  • Induction sealing is a no contact heating process that accomplishes the hermetic sealing of a container with a closure that includes a heat-sealable foil laminate. The typical induction inner seal begins as a multi-laminate liner inside a closure. It consists of a polymer that is compatible with the bottle material and capable of heat-sealing to the lip of the container when the closure is placed onto the container and is passes through a heat source – usually an electromagnetic field produced by an induction heater.

Lids with Liners

Take a look at some of our closure with liner such as foam and PS liners below to view which one fits your packaging preference. At FH Packaging we love to provide excellent customer service, If you need help in choosing a specific cap or liner for your packaging be sure to contact us.

Plastic Packaging Recycling Codes and Typical Plastic Properties

Packaging 101 Spec Sheet Chart with Polyethylene Terephthalate High Density Polyethylene Polyvinyl Chloride Low Density Polyethylene Polypropylene Polystyrene Other Plastics


Polyethylene Terephthalate


High Density Polyethylene


Polyvinyl Chloride


Low Density Polyethylene





Other Plastics

Clarity Clear Translucent Clear Translucent Translucent Clear
Oxygen Barrier Average Above Average Poor Above Average Above Average Poor
Moisture Barrier Great Poor Great Poor Poor Average
Max Temp 120ºF 145ºF 140ºF 120ºF 165ºF 150ºF
Rigidity Moderate to High Moderate Moderate to High Low Moderate to High Moderate to High Plastic ID Code “7” is for other plastic
Resistance to Impact Good to Excellent Good to Excellent Fair to Good Excellent Poor to Good Poor to Good
Resistance to Heat Poor to Fair Good Poor to Fair Fair Good Fair
Resistance to Cold Good Excellent Fair Excellent Poor to Fair Poor
Resistance to Sunlight Good Fair Poor to Good Fair Fair Poor to Fair

Plastic Containers

Take a look at some of our plastic containers below to view which one fits your packaging preference. At FH Packaging we love to provide excellent customer service, If you can not find the containers you are looking for be sure to contact us below on our LivecChat tool in the bottom right corner. Contact us through phone or email:

Phone: (951)-848-7680