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Knowledge Base

Frequently Asked Questions

It is a type of packaging which is pliable and has a shape that can be readily changed. Flexible plastic packaging is one of the fastest growing segments in packaging, and is most commonly made from plastic polymers such as polyethylene, polyester, polyamide, and polypropylene.

Its advantages include its low-volume and lightweight structure, as well as the ability to be made from several layers of material to enhance properties like shelf-life, durability, printability, barrier, sealability, and strength. Its flexibility is a key performance factor for many industries.

Flexible packaging is regularly used to wrap products during storage, transport, and to protect products, including food items, during shelf-life.

Most waste-treatment centers do not accept flexible plastic packaging for recycling because its material structure is too complex, contaminated by food, and/or lightweight to be successfully recycled. Of the very few types of flexible packaging that are recyclable, very little (about 4%) are actually recycled. Companies like Teracycle have come to market with mechanical and chemical recycling that address hard to recycle conventional flexible films.

The term ‘biodegradable’ represents a process, but not necessarily under what conditions or time frame, also, the rate of decomposition can vary significantly. Technically, all chemical compounds can be biodegradable under the right conditions, and will decompose over a certain period of time, but that time could be hundreds or thousands of years. For example, wood is biodegradable, but wooden structures don’t break down and can stand for generations. Trees are biodegradable, but stand for hundreds of years. If a material is compostable, it means that under composting conditions (heat, humidity, oxygen, & microorganisms) it will break down to CO2, water, and a nutrient-rich compost within a specific time frame.

Common Abbreviations

  • COEX = co extrusion (multiple layers extruded at the same time)
  • ADH = adhesive (holds the laminated structures together)
  • PE = polyethylene
  • LDPE = low density polyethylene
  • HDPE = high density polyethylene
  • LLDPE = linear low-density polyethylene
  • mLLDPE = metallocene linear low-density polyethylene
  • PA = polyamide (nylon)
  • PET = polyester
  • OPP = oriented polypropylene
  • BOPP = biaxial oriented polypropylene
  • EVOH = ethylene vinyl alcohol
  • MET = metalized coating (as in metalized polyester)
  • AOH = acrylic alcohol coating
  • PVOH = polyvinyl alcohol coating
  • PVDC = polyvinylidene chloride coating
  • SiOx = silicon oxide coating
  • AlOx = aluminum oxide coating

Components of a Pouch

Pouches are a popular choice for packaging food due to their ability to withstand high temperatures and pressure while also keeping the food fresh. These pouches consist of four essential components that work together to deliver optimum performance.

The polypropylene layer forms the innermost layer, coming into contact with the food. It is designed to be food safe and is essential in preventing any contamination of the food. The nylon layer brings abrasion resistance, making it resistant to punctures and tears. This layer is followed by an aluminum foil barrier layer that provides an outstanding barrier against oxygen, moisture, and light. Finally, a polyester outside layer is added, which provides durability and resistance to temperature fluctuations.

components of a pouch

Pouch Seal Types

Stand up pouches have become a popular and versatile packaging option in recent years, and part of the reason why is due to the different types of seals available.

The plow-bottom pouch boasts a wide, flat base that allows it to stand upright easily, while the K-style pouch with skirt seal has a more tapered design, with an added skirt piece that helps prevent spills. Finally, the Doyen-style pouch features a unique curved seal that helps create a sleek, attractive appearance.

pouch seal types

How to Measure a Pouch

Knowing how to accurately measure a stand up pouch is crucial to ensuring that your products fit perfectly within them.

To begin with, take the dimensions of the pouch – measure the width, height, and depth at their widest points. When measuring the width, make sure to measure from the left side of the pouch to the right side, ensuring that the tape measure is level.

Next, measure the height from the bottom of the pouch to the highest point, which could be the top of the zipper or the resealable closure.

Finally, to measure the depth, pick up the pouch and measure from front to back, ensuring that it is fully expanded.

how to measure a pouch

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