Poly Pak America, Inc. recently switched to Eastman Chemical Company's Eastman Hifor Xtreme polymer (high strength polyethylene) to make its high-security night deposit and cash transmittal bags even tougher.
Most people are familiar with canvas or zippered cash bags with seals or locks that have been used for decades to transfer money between banks and retail establishments. The bags are sturdy and long lasting but not tamperproof, and pilferage can occur.
Today, hundreds of businesses have replaced the familiar canvas bag with tough, sealable, high-security, plastic cash bags from Poly Pak America.
Clear Poly Lok cash transmittal bags are used to transfer cash or other negotiables within organisations. Information such as cashier, register number, date and contents can be recorded on the writable front. After money is placed in the bag, it is sealed using the permanent, tamper-resistant closure. The clear plastic bag allows the person receiving the bag to see its contents and verify that no tampering or pilfering has occurred.
The Poly Lok night deposit bags are similar in design to the cash transmittal bags but are silver-lined so that the contents can't be seen. Each bag is individually numbered on the bag and flap. The flap is specially perforated to provide a numbered receipt for the sender. Both the cash transmittal and night deposit bags are inexpensive and are designed to be discarded after a single use.
Richard Gurewitz, president of Poly Pak America, said: "We were looking for a material that had excellent impact and tensile strength and good processability. A number of materials are strong but take a lot of power to process, so productivity is lost. Eastman Hifor Xtreme is not only easy to process, it also has the clarity and tensile and impact strength we need for our security bags." Poly Pak America also uses the polymer to produce their heavy-duty shipping bags.
Eastman Hifor Xtreme polymer has high stiffness, exceptional dart impact strength and excellent sealability, making it an excellent material for applications such as food packaging and heavy-duty shipping sacks.
It is also used in insulation overwrap, agriculture films, drawstring bags, shrink bundling, coextruded films and merchandise bags. Its excellent resistance to tears and punctures often allows downgauging. The polymer is available in a variety of formulas, with densities of 0.926 and 0.917. Melt indexes range from 0.50 to 1.0.