Thursday, June 11, 2009

Printing Lamination – FAMOUS METHODS

A Lamination in printing business works is laminating of printing matters surfaces to make them look exclusively. The printing lamination could give you more fine results and durability of printing matters. It is widely used for finishing works in printing brochures, flyers, business cards, catalogs, etc.

SFM-1000 Water Soluble Laminating Machine

Here are the famous methods of printing lamination used in printing business activities...

Thermal Lamination
The laminate in printing business usually consists of 2 plies with each ply made up of an overlaminate film and an adhesive, which is dry and not tacky to the touch. A heat source and pressure are required during the lamination process. The document is placed between the two plies of the laminate film and then sent through equipment where the dry adhesive is made tacky by heat and is pressed onto the document under high pressure. After cooling, the adhesive solidifies and provides a permanent bond between the document and laminate film.

Cold Lamination
Cold lamination is a process in which only one side of a document is laminated. This cold laminating process is required when the ink and/or paper used for a document is too sensitive to the heat required with thermal lamination. The laminating film used for cold lamination is much more costly than for thermal lamination, but the equipment is less expensive.

One method of cold lamination utilizes a process where no dry adhesive is used as in thermal lamination. The surface of a document is flooded with a water-soluble adhesive. It is then sent through a set of rollers with the laminating film rolled onto the top of the document and the adhesive. Pressure is applied which evenly distributes the adhesive and bonds the film to the document. The adhesive takes a bit longer to cure than thermal lamination and lighter stocks can wrinkle or warp because of the water based adhesive. Cold lamination may not be as permanent as thermal lamination.

General Tips:
- Allow several days for laminated sheets to cure, since the adhesive takes time to fully adhere to the stock. Use caution when applying a lamination film to varnished sheets.
- Use a varnish that dries quickly, contains minimal residual solvent, and contains no wax additives.
- Do not laminate printed materials containing metallic inks since air bubbling adhesion problems may occur.


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This will help anyone who wants to do something with the printing matters.

Keep on informed...


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