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082 Barrier property for dog food packaging


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082 Barrier property for dog food packaging

  1. 1. QINGDAO ZCOLOR PACKING Barrier Property for dog food packaging By Bruce Dou Packaging Specialist in China Qingdao ZCOLOR Packing Co. Ltd Of course, it is very important to keep the dog food as fresh as possible, and give our dogs good tastes, Usually, for wet dog food, it is usually canned packaging, that will ensure a great barrier packaging against outside factors. However, when it comes to dry dog food, it is usually packed in plastic bags or foil bags, and of course, dry dog food have to be kept fresh inside the foil package. We are a professional producer of plastic pouches for dry dog food, and here we are going to get a shallow understanding on the barrier performance on the plastic pouches. The barrier property for the plastic pouches are mainly depending on the barrier performance for the film materials used for the pouches. And below, we get a basic understanding on the film materials that are applied for the pouch converting.
  2. 2. QINGDAO ZCOLOR PACKING 1) Polyester film Polyester film, usually short as PET film in flexible packaging, that mainly serve as outside printing substrate in the pouch structure. 2) Metallized Polyester film Metallized polyester film is achieved by depositing a thin layer of aluminum atoms onto the surface of polyester film and finally a bright, metallic, barrier film is produced as below. Metallized polyester film usually works as middle layer in the foil structure, functions as
  3. 3. QINGDAO ZCOLOR PACKING barrier layer and sunlight shielding layer. 3) Aluminum Foil Aluminum foil is a very thin layer of aluminum metal at 7 microns used in flexible packaging, that is achieved by calendaring the aluminum metal into foils, and that occupies the first barrier layer among all the film materials used in flexible packaging. 4) KPET film KPET film, is short for PVDC coated polyester film, that is to apply a thin layer of PDVC emulsion onto the surface of polyester film, and then achieve a coated film that is better barrier property than common polyester films 5) Nylon film Nylon film, usually short as NY film or PA film in flexible packaging, that is great barrier against oxygen, however not to moisture. Particularly, Nylon film is moisture-sensitive, that cause the barrier property to decrease when the moisture increases. And that also limits some applications for nylon film.
  4. 4. QINGDAO ZCOLOR PACKING 6) LDPE film LPDE film, is short for low density polyethylene film, that is the most common film used for plastic packaging, usually works as inner seal layer in multilayer laminated packaging. And here, we are going to list the barrier property against WVTR (Water Vapor Transmission Rate) and OTR (Oxygen Transmission Rate) for the above film materials. Item WVTR (g/100in2/24hr) OTR (cc/100in2/24hr) PET film 1.0~1.3 2-6 Metallized PET film 0.05 0.01-0.11 KPET film 0.4 0.3-0.5 NY film 19~20 1.2-2.5 Aluminum Foil 0 0 Conditions: 38℃, 90% RH for 1 mil film
  5. 5. QINGDAO ZCOLOR PACKING For the final property for the pouch, Let’s take a three-layer foil structure for example, as below. The barrier property for the laminated foil is calculated as below. Seen from the above formula, we can see that the better barrier for each layer, the better barrier performance for the final laminated foil. And the best barrier foil is the laminated foil included aluminum foil. We are now producing different kinds of pouches that are of great barrier property, anyone interested in dog food pouches, you are welcome to reach us for further consults.
  6. 6. QINGDAO ZCOLOR PACKING Quad seal standup pouch for 5kg dry dog food Side Gusseted standup pouch for 5kg dry dog food
  7. 7. QINGDAO ZCOLOR PACKING Flat Bottom Standup Zipperlock pouch for 2kg dog food Contact: Bruce Dou Qingdao ZCOLOR PACKING Co., Ltd Qianhai West, Chengyang, Qingdao, China Email: Skype: happbruce2010 Mobile: +86 159 6981 3136 Follow me here