Packaging a product is one of the most important things you can do after manufacturing it. You need to keep your product fresh and safe from outside elements. Not all items are the same, though. Each will need different packaging based on what is necessary to keep it fresh. Thankfully, not all flexible packaging materials are the same, either.
Flexible Packaging Materials
Cast Polypropylene (CPP)
CPP can be used as a single film or lamination sealant material. It has moderate elasticity, good heat sealability and improved low temperature sealing, and excellent machine suitability. This film also has superb moisture-proof properties, abrasion resistance, and excellent shock resistance. All of these characteristics make it an ideal choice for both nonfood and food items such as vented and unvented packaging for medical device sterilization, freezer to microwave meals, and the packaging of fresh produce.
Vacuum-Metallized Cast Polypropylene (VMCPP)
This film has a reflective, silver surface similar to that of aluminum foil, and is highly flammable. It has a high toughness, heat seal, and also a lower density and cost than aluminum foil. VMCPP is versatile for different food products including rice derived products, snacks, deep fried products, tea, and soup seasoning.
Retort Cast Polypropylene (RCPP)
Constructed from flexible metal-plastic laminate that is able to withstand thermal processing used for sterilization, RCPP has superior bond and seal strength, and overall performance. When food is packaged with this film, it is first prepared before being sealed into the retort pouch. The food inside is then cooked in a pressure cooker-like fashion.
Linear Low-Density Polyethylene (LLDPE)
This film has better tear and impact qualities, and is great for mild and strong buffers, with a good chemical resistance. It stretches under pressure and is extremely flexible to help it easily resist cracks and impact. LLDPE has good water vapor and alcohol barrier properties, making it an excellent packaging option for beverage products.
With essentially the same properties as regular LLDPE, this film, along with its extra antistatic feature, finds itself suitable for carrying electronic products.
The high oil and frost resistance of this film makes it great for frozen products.
Polyethylene Terephthalate (PET)
This film is great packaging for beverages due to its property of being a good barrier to alcohol and being a good gas and fair moisture barrier. PET is strong and impact-resistant while still lightweight, and can be semi-rigid to rigid.
PVDC Coated Polyester (KPET)
PVDC is short for polyvinylidene chloride, which is a colorless coating for flexible packaging that helps create a gas barrier. KPET, in particular, has excellent barriers against moisture, oxygen and aromas, as well as being heat sealable. These properties make it great packaging for bakery treats, biscuits, confectionery, dairy products, dried fruits, fresh produce, and meat.
Metallized Polyethylene (VMPET)
This packaging material is good for products such as different kinds of food, cigarettes, tea, and shampoo because of its wet ability and high barrier to humidity. If your product needs to remain very dry, this is a top option. It also has metal adhesion.
Foil is highly malleable, making it great for packaging. It can be converted into thin sheets and rolled, folded and packed with little difficulty. As a complete barrier to light and oxygen, odors and flavors, moisture and germs, foil is an especially great option for pharmaceuticals and food, especially long-life packs for food and dairy products, take away meals, and long-life pet treats.
If your products have a high demand for packaging with strength and durability, consider this material. Kraft paper is porous with high elasticity and high tear resistance, making it extremely durable.
White Kraft Paper
Much like regular, brown Kraft paper, white Kraft paper is very durable, having high tensile strength. Unlike the latter, however, it’s much easier to print onto this material. White Kraft paper is also more suited for meat packaging and other moist products because of its blood and water hold out properties. It’s also puncture resistant, so bones won’t be able to break through.
Nylon has a high heat, abrasion and moisture resistance. It is also a transparent material. Consider using this film as meat wrappings or sausage sheaths, as it is good for foods where an oxygen barrier is needed. The high temperature resistance of nylon also makes it useful for use as oven bags.
Bi-Oriented Polypropylene (BOPP)
BOPP is a polypropylene film that is stretched in two directions - the length and width of the machine. Stretching it like this increases the material’s strength and clarity. BOPP film is good for snack foods, confectionery and fresh produce.
Mono-Oriented Polypropylene (MOPP)
This film is stretched in only one direction - the length of the machine - and is transparent and softer than PET. It has a high tensility and heat resistance. Consider this product if you’re looking for cereal packaging liner.
Rice paper has a high tensile strength, and is smooth, thin, crackly and strong. But don’t let how thin it is fool you. Although it is thin, it’s still stronger than commercially made wood-pulp paper. Thanks to its strength, it is great for high-end product packaging. Do you have any questions about which flexible packaging materials are right for your products? Let us know! Contact us today.
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