PACKAGING NEWS

Cor-Pak® VCI Antistatic Stretch Film

Antistatic materials are of special importance in packaging. Poor electrical conductivity of plastics causes a lot of problems during production, handling and use. The insulative property of plastic materials means that friction or separating two plastic sheets may lead to the creation of a charge. Dust and dirt may settle between the stretch film layers. This may lower cling properties. Cortec's new Cor-Pak® VCI Antistatic Stretch Film meets the requirements for antistatic film under MIL-B-81705C, Type II, and has a surface resistivity of 109-1011 ohms/sq and a static decay of <2 seconds. The biggest advantage of Cor-Pak® VCI Antistat Stretch Film is the combination of antistatic and VCI properties, providing long-lasting multimetal protection. Cor-Pak® VCI Cushion This new product was developed specially for packaging of sensitive electronics parts, such as circuit boards, motherboards, etc. Cor-Pak® VCI Foam combines:

  • Protection from corrosion damage
  • Protection from physical damage (cushioning)
  • ESD protection

Construction of the VCI foam is quite simple: Cortec's VCI-126 or VCI-125 film is laminated to closed-cell polyethylene foam (1/18" or 1/16" thickness). No adhesive is needed for lamination. Additional benefits include:

  • Durability and reusability
  • Heat-sealability
  • Non-abrasiveness
  • Water resistivity
  • Resistance to most solvents and chemicals

Military Packaging - MilCorr A recent military document provides a more detailed definition of packaging: "The processes and procedures used to protect material from deterioration and damage. It includes cleaning, drying, preserving, packaging, marking and unitization." Now, let's have a quick quiz. To preserve, let's say a military vehicle, what properties of the packaging material are desired? Let's name the most important: ultra strength, corrosion protection, UV protection, flame retardancy, superior shrink characteristics, . . . How many products do we need to obtain all three requirements immediately? The answers are numerous if you don't ask Cortec Corporation to help answer your problem. We can solve this task with just one product - MilCorr Shrink Film. This new composite film has everything you need - ultimate strength characteristics, powerful multimetal VCI, ultraviolet and a flame retardant package. MilCorr was specifically designed to meet the most stringent military requirements. Of course, you can use it for "civil" applications, such as mothball preservation of industrial equipment, export packaging, heavy equipment, recreational vehicles (boats, snowmobiles), etc. This new tan film is available in sheeting and tubing with a thickness from 10 to 12 mils (250-300 microns).

Cor-Pak® Cocooning Stretch Film

A new low cost procedure to wrap metal coils in a rolling position with bore/eye horizontal is now operational. The process utilizes a semi-automatic stretch wrapper and Cortec's unique Cor-Pak® Cocooning Stretch Film, specifically designed for applications requiring a strong yet soft film. It is now possible to cocoon-wrap coils fast and efficiently with packaging that conforms to the metal product. To properly protect eye horizontal coils against corrosion and handling damage, several packaging components are required. And ID insert to protect the bore/eye, ID edge protector to prevent handling damage when lifting, sidewall protection to avoid damage from C-hook or equivalent when moving coils, and OD protector to prevent edge cuts during wrapping and stacking of coils. However, the manual placement of these necessary components negated goals for reduced labor and investment costs. Cortec developed corrosion protection with each of these required components. VCI-350 A and B contained for fiberboard and corrugated, VCI-357 saturation coating for laminated edge protection, VCI-126 films for ID tubes and edge wraps, EcoWeave® where strength is required, and even VCI plastic corrugated for converting as warranted.

Cocoon Wrap Method

Most manufacturers of stretch wrap equipment offer various size and speed units in their semi-automatic line to cocoon wrap coils. They can either furnish blocker rollers used to roll the coil during wrapping or install over an existing blocker roll system. These wrappers are available with an articulating wrapper arm to move in and out for coil placement and removal. Cost for the wrapper only with 12-18 rpm would approximate $20,000 US and compatible blocker rolls would be about $15,000 US installed, depending upon desired accessories. These relatively low costs for mill equipment are what make this packaging method available universally. Cortec's high-performance Cor-Pak® Cocooning Stretch Film is designed for maximum strength and holding force with superior corrosion protection. For the Cocoon Wrap method, trials found that other characteristics were required leading to the developed of the unique Cor-Pak® Cocooning Stretch Film. This innovative film maintains the same advantages as regular Cortec stretch film. It also conforms exceptionally well to the curvature of the coil and adheres to prevent slippage and zippering of the film.