SHRINK PACKAGING GLOSSARY

Following is a list of vocabulary used in shrink packaging machinery industry. Most common words and their meanings. If you are in shrink packaging business and have a word to add to our glossary, please write us at [email protected]

  • Ballooning: Shrink Wrap / The air trapped inside the film package does not escape out and creates a pillow-like effect.
  • Bead Seal: A thin and round weld formed when heat and pressure are applied to two layers of filmin.
  • Bi-Axial Orientation: Film molecules oriented on both the X and Y axes.
  • Blocking: The situation where two layers of film are mixed and stick together like a single film.
  • Blown Film: The film expands due to the air current.
  • Burn Through: In a film heat tunnel, a nebulous texture is burnt or burnt.
  • Centerfold/CF: A film that is folded in two, folded in the longitudinal direction.
  • Coextrusion: The joining of two or more polymers, each forming separate layers, in a metal mold.
  • Cold Flex: The performance of a film in low temperature environments.
  • Copolymer: The result of polymerizing two monomers together.
  • Core: A paper tube wrapped on a film.
  • Cross-Linking: Cross-linking in chains between atoms in a polymeric molecule. This increases the thermal stability and strength of the films.
  • Crow’s Feet: The condition of a finished package, which corners wrinkled.
  • Dog-Ears: Triangular protrusions at the corners of a finished package.
  • Drape: The ability of a film to be in irregular shapes, thanks to its softness and flexibility.
  • Electron Beam: A device used for cross-linking operation.
  • Fish Eyes: Pitting surfaces in a finished package.
  • Gauge: Unit of measure that defines the thickness of a material, such as shrink film.
  • Hole Punch: A mechanical device that opens the air vent.
  • Hot Slip: It is used to evaluate the film's friction or slipperiness with the other film. In vertical stacking, the need for slippery may be important.
  • Impulse Seal: Welding technique by instantaneous high current.
  • L-Sealer: The generic name given to systems whose source space is L-shaped.
  • Laminate: A general term used to describe structure made up of two or more materials.
  • Lap Seal/Overlap: The welding process for the merging of two films that ran on each other.
  • Machine Direction: The direction of the film produced and moved on the sealing equipment and conveyor.
  • Memory: Capacity to protect the characteristic, after shrinking the film.
  • Monoaxial: A film that can only shrink in one direction.
  • Monolayer Film: A single-layer film extracted from the mixture of raw material.
  • Multilayer Film: A multilayer film formed by combining similar or different polymers.
  • Opaque: Light-tight.
  • Optics: All the visual characteristics of a film.
  • Orientation: The technique of stretching, stretching, used in the production of a film.
  • Oriented: The molecules of the previous film are stretched in certain directions in a file provided by the melting point.
  • Perforations: Air vent holes created on the film.
  • Polyethylene: It is a thermoplastic used in a wide variety of products. Polyethylene is produced using ethylene. In the plastic industry, name, briefly used as PE.
  • Polymer: They are very long chain molecules formed by the addition of molecules called monomers. Polymers formed by the same monomers are called homopolymers, and polymers composed of at least two different types of monomers are called copolymers. Polymer formation in a chemical reaction is called "polymerization."
  • Polyolefin (POF): It is a kind of plastic film produced by using polyethylene and polypropylene raw materials together. The product can be produced as 3 floors, 5 floors and 7 floors and more. They are elastomeric and thermoplastic materials formed by the joining of carbon chains. They are usually formed by the polymerization of olefins or alkenes. It can be defined in the sector as POF, PO, Polyolefin.
  • Polypropylene (PP): It is a thermoplastic polymer with a wide range of applications from parts used in the automotive industry to textile and food packaging. Monomer propylene, polypropylene obtained by polymerization, is extremely resistant to chemical solvents (acids and bases). Polypropylene is very resistant to fatigue. Low cost, good impact resistance. The coefficient of friction is low and provides very good electrical insulation. Chemical resistance is good. It is suitable for all thermoplastic processing processes.
  • Preferential Shrink: A film is more or less shrinkable in a certain way.
  • PVC: Polyvinyl chloride is a type of plastic that has a wide range of uses.
  • Seal Wire: A material that is made of niobium-chromium to seal a film.
  • Selvage/Trim: Scrap, waste raw material description.
  • Shrink: Make it smaller.
  • Shrink Tunnel: A furnace-like structure, conveyor that allows a film to shrink and shrink by applying heat and airflow, and to change its characteristic structure.
  • Single Wound Film (SW): A single-layer film wrapped around a core.
  • Slip: The ability of a film to slide over the surfaces without resistance.
  • Static: Static electric charge, deposited on a plastic film.
  • Wind Direction: A statement indicating the direction in which the film is wrapped on the bobbin.

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