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| | BAG/FILM MANUFACTURE TERMS
ANTIFOG FILM: a special blend of film that includes an additive to prevent the build up of condensation inside the bag thereby preventing premature spoilage of fresh produce.
BREATHABLE FILMS: the ability of extruded film to allow oxygen to pass through at a specified rate, thereby extending the shelf life of food and fresh produce.
CALIFORNIA FILM EXTRUDERS & CONVERTERS ASSOCIATION (CFECA): a trade association of manufacturers and suppliers dedicated to representing impartially the broad interests of the plastic film extruding and converting industry in California.
C.I. PRESS: Central Impression Printing Press used for finer flexographic print.
GUSSET: the fold in the side or bottom of the bag, allowing it to expand when contents are inserted.
HEADER BAGS: bags with a folded area at the top of the bag used to increase strength when the bags are to be hung on display.
HERMETIC SEALS: air or liquid tight seals, which can be made with breathable films.
LIP: the area that extends past the opening of the bag on one side to assist in dispensing.
OPEN MOUTH ZIPPER BAG: the zipper is pre-opened to ease loading.
OXYGEN TRANSMISSION RATE (OTR): a measure in cubic centimeters of the rate that oxygen is allowed to transfer through the film and effectively control oxygen concentration inside the package to prolong the shelf life of food and fresh produce.
PATCH HANDLE BAGS: a shopping bag made from a single weight of film with a reinforced film patch laminated to the handle area to increase the weight capacity of the bag.
POST-CONSUMER RESIN (PCR): plastic resin derived from discarded packaging that has served its original purpose, which has been collected and recycled in a stewardship program.
RESIN: polyethylene pellets used to make film. Roplast specializes in linear low density, low density and medium density resin products.
SQUARE BOTTOM: special seals added to a bottom gusset bag to allow the package to stand up.
STAPLE PACKS: a bundled quantity of bags bound together by fiberboard with heavy staples.
TAMPER EVIDENT ZIPPER (TEZ): a sealed header above the zipper with a perforation to allow easy access to the zipper by tearing off the top and easy visual inspection of a broken perforation indicating the contents may be contaminated.
THE SOCIETY OF THE PLASTICS INDUSTRY (SPI): the plastics industry trade association. Their mission is to create and maintain programs to promote the plastics industries contribution to society and communicate the value of the industry and the benefits of its products.
THICK/THIN BAGS: using a heavier weight film in the top handle area and lighter weight film in the body of shopping bags to provide the strength necessary to carry food and merchandise.
UNIGAUGE: one uniform thickness throughout the bag.
WICKETED BAGS: a bundled quantity of bags bound together through holes in the top header generally with a fiberboard backing to improve handling during packaging.
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GRAPHIC ART TERMS
BITMAPPED GRAPHICS: the representation of a digital image as a matrix of picture elements (pixels). All images acquired by digital cameras and camcorders, scanners and screen capture programs are bitmapped images. Also known as "raster graphics", images created in paint programs are also bitmapped images. There are many bitmapped formats, including JPEG, EPS and TIFF. Bitmapped graphics and vector graphics are the two fundamental structures for digital images.
CMYK: cyan, magenta, yellow, black; the four process color printing inks.
CONTINUOUS TONE (CT): an image containing a range of color tomes from light to dark. Appear as pixels on a color monitor or silver/pigment particles on a photograph. Must be converted to halftone dots in order to be printed.
CUT-BACK CURVES: data which indicates the film negative halftone dot areas needed to compensate for normal dot gain throughout the entire tone scale during the printing process. This data is specific to particular printing materials and process conditions.
DOT GAIN: a physical and/or optical measurement and theoretical calculation of the apparent increase in dot area from one medium to another. Normally expressed as the difference between a midtone (nominal 50%) dot area on a film negative and the printed dot area; for example a 50% film dot area which prints as a 78% dot has a 28% dot gain. Dot gain (and loss) are normal and must be controlled throughout the prepress and printing process.
DPI: dots per inch
EPS (Encapsulated PostScript): a PostScript file format used to transfer a graphic image between applications and platforms. EPS files contain PostScript code as well as an optional preview image in TIFF, WMF, PICT or EPSI, the latter being an ASCII-only format. Adobe Illustrator has its own variation of EPS, which is an EPS subset, thus, both Illustrator EPS and standard EPS files are in use.
HALFTONE: a pictorial which has been converted from a continuous tone original image, such as a photograph, into dots of appropriate size which, when printed, give the visual illusion closely resembling the original.
JPEG (Joint Photographic Experts Group): an ISO/ITU standard still image format that is very popular due to its excellent compression capabilities. JPEGs are widely used on the Web for photographic images, but are not as well suited for compressing charts and diagrams, as text can become fuzzy.
LPI: lines per inch
PMS (PANTONE MATCHING SYSTEM): the company/brand name of a system for specifying colors, as standard in the printing industry.
PDF (Portable Document Format): the file format in Adobe's Acrobat document exchange technology. Acrobat/PDF has become the de facto standard for document exchange as well as for publishing documents on the Web that are downloaded and read independently of the HTML pages. Millions of brochures, data sheets, white papers and technical manuals are on the Web in PDF format.
POINT: a measure of size principally used in typesetting to indicate the size of type. One point is equal to approximately 0.014".
POSTSCRIPT: Adobe Systems trademarked page description language.
SANS SERIF TYPE: a typeface style without serifs, which are the fine lines that finish off the main strokes of a letter. Helvetica is a common sans-serif font.
SERIF TYPE: the fine lines that finish off the main strokes of a letter of traditional typefaces, such as Times Roman.
TRAP (IMAGE): the practice of spreading the adjacent (butted) images printing in subordinate colors around white type or along a white line, permitting the dominant (usually darker) color image define the edge. This allows normal register tolerances to exist without degrading the design.
TIFF (Tag Image File Format): a file format for graphics developed by Aldus, Adobe and Apple that is particularly suited for representing scanned images and other large bitmaps. The original TIFF saved only black-and-white images in uncompressed forms. New versions support color and compression.
VECTOR GRAPHICS: the representation of a digital image as points, lines and other geometric entities. All computer-aided design (CAD), drawing and diagramming programs create vector graphics formats, such as AI and EPS. Vector graphics and bitmapped graphics are the two fundamental structures for digital images. | |
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