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Typical Features: Excellent clarity, gloss, scratch resistance, heat seals, and hot tack. Good stiffness.
Barrier Properties: Excellent water barrier, poor gas barrier.
Typical Grades: Ranges from 60 ga up to 4 mil.
Applications: CPP is an excellent alternative to PE for bags with less than 1 lbs of content. CPP has significantly better heat seals than OPP and easily seals through contamination for dusty products. CPP is an excellent sealant web, laminated to OPP, PET, Paper. It is also often used for Twist Wrap applications.
Description: Oriented polypropylene (OPP or
BOPP) is a commodity film that is typically produced in
dedicated factories in North America, Asia, or the Middle
East.
Typical Features: Excellent clarity, gloss, and
stiffness. Good heat seals.
Barrier Properties: Excellent water barrier, poor gas
barrier.
Typical Grades: We generally stock 70ga, 80 ga, 1
mil, 1.2 mil, and 1.4 mil.
Applications: Sealant web or outer web in
laminations, or a stand-alone film for certain applications.
Most grades of OPP is sealable on 2 sides, and can in most
cases be fin sealed or lap sealed.
Description: Polyethylene is
extruded throughout North America, and is a readily available and
commonly used material. We extrude PE in-house and also buy certain
grades from local suppliers, depending on the requirements. PE is
typically blown, but can also be cast. Cast PE is typically softer and
clearer than blown PE.
Typical Features: Excellent heat seals, puncture resistance, and impact
resistance.
Barrier Properties: Good water barrier, poor gas barrier.
Typical Grades: 1.5 mil, 2-4 mil.
Applications: PE is most commonly used as the sealant web in laminates
of all kinds.
Typical Features: Excellent stiffness, clarity, gloss and heat resistance.
Barrier Properties: Excellent gas barrier, poor water barrier.
Typical Grades: We stock 48 ga PET, which is the most common grade in North America for flexible packaging.
Applications: Polyester is almost always used as an outer web in laminations. The heat-resistance of PET makes it ideal for this application, creating a very "forgiving" material that is easy to run. Heatsealable grades of PET do exist, but they are not that common. As a result, PET laminations require a fin seal.
Typical Features: Similar to uncoated PET
Barrier Properties: Excellent water and gas barrier.
Typical Grades: We typically stock 54 ga PVdC PET for high-barrier applications.
Applications: PVdC PET is typically the outer web in laminations where a high barrier is required in a transparent package, such as certain coffee applications or hygroscopic powders and mixes.
Typical Features: Similar to uncoated PET
Barrier Properties: Outstanding gas barrier.
Typical Grades: 48 ga PET is stocked and coated for the application.
Applications: N-Coat PET is typically the outer web in laminations where a high gas barrier is required in a transparent package, and PVdC PET or SiOx or AlOx astructures are too expensive or do not provide adequate barrier. N-Coat is a water-based coating, and is considerably cleaner than PVdC.
Typical Features: Similar to PET
Barrier Properties: Outstanding gas barrier.
Typical Grades: 48 ga PET is stocked and metallized for the application.
Applications: Metallized PET can be surface printed and used as the outer web in a lamination. For better gloss and to protect the ink from scuffing, metallized PET is often the middle layer in a triplex lamination.
