Cold roll laminator

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Category: Laminating machine, laminator

Published on Friday, 01 July 2011 14:59

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Cold Roll Laminators use a plastic film which is coated with an adhesive and glossy backing which does not adhere to the glue. When the glossy backing is removed, the adhesive is exposed, which then sticks directly onto the item which needs to be laminated. This method, apart from having the obvious benefit of not requiring expensive equipment, is also suitable for those items which would be damaged by heat. Cold laminators range from simple two roller, hand crank machines up to large and complex motor driven machines with high precision rollers, adjustable roller pressure and other advanced features.

Cold lamination increased in popularity with the rise of wide format inkjet printers, which often used inks and papers incompatible with hot lamination. A large percentage of cold laminate for use in the print industry is PVC, although a wide range of other materials are available. Cold laminating processes are also used outside of the print industry, for example coating sheet glass or stainless steel with protective films.

Cold roll laminators are also used for laying down adhesive films in the sign making industry, for example mounting a large print onto a board. A practiced operator can apply a large adhesive sheet in a fraction of the time it takes to do so by hand.

How to keep cold laminator life longer

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Category: Laminating machine, laminator

Published on Wednesday, 03 September 2014 02:49

Written by shichang ding

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Q:The machine's rollers are tighter on the sides than they are in the center which causes the material to feed through easier in the center than it does on the sides. Which causes the material to bow and start to wrinkle

A:You should lose the two screws so that the two rollers do not touch each other. if you tightened the two rollers together during the machine did not work, the two roller will lose their shape.

IF you forget it,  you can try to recover the two rollers, the solution is: you tightened the two rollers together and turn on the machine for one hour.

 when you laminate film, you should put the film into centre, means that left  sides should be equal to right side.

Heated roll laminator

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Category: Laminating machine, laminator

Published on Friday, 01 July 2011 13:45

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A heated roll laminator uses heated rollers to melt glue extruded onto lamination film. This film is in turn applied to a substrate such as paper or card using pressure rollers. The primary purpose of laminating with such a machine is to embellish or protect printed documents or images. Heated roll laminators can vary in size from office based pouch laminators to industrial sized machines. Such industrial machines are primarily used for high quantity/quality output by printers or print finishers.

Whether small office or industrial machines - their primary function is to embellish or protect printed works. Such laminators are used to apply varying thicknesses of lamination film onto substrates such as paper or fabrics. The main advantage to the use of heated roll laminators is that of speed. Heated laminators use heated rollers or heated shoes to melt the glue which is applied to lamination film. The process of heating the glue prior to applying the film to a substrate allows for a faster application of the film. The laminates and adhesives used are generally cheaper to manufacture than cold roll laminates, oftentimes as much as half the cost depending on the comparison made. As the materials are non-adhesive until exposed to heat, they are much easier to handle. The glue is solid at room temperature, so lamination of this type is less likely to shift or warp after its application than pressure activated laminates, which rely on a highly viscous, adhesive fluid.

Introduction to Hot Laminating Film

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Category: Laminating machine, laminator

Published on Saturday, 07 April 2012 03:22

Written by shichang ding

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Laminating film is available in a variety of widths and thicknesses. The thicker the film, the stiffer and more durable the laminated item will be. Films can be used for hot or cold lamination depending on the type of document you have.

Hot laminating film consists of two layers, a polyester-base layer and an inner adhesive resin layer. The material to be laminated is placed between two sheets of laminating film. Heated rollers melt the adhesive resin layer, which then spreads over the document, hardening as it cools and creating a bond between the material and film.

The polyester and adhesive content in hot laminating films is defined as a ratio, such as 3/2 or 1/4. The first number represents the polyester content, while the second represents the adhesive content. Ratios with larger polyester contents produce stiffer lamination. Ratios with more adhesive contents will have a stronger bond. Stronger bonds are necessary when laminating thicker materials such as substrate backing or hard plastic.

There are several types of laminating film used in hot laminators:

• Standard laminating film is designed for everyday lamination of documents that do not have a heavy ink lay down.

• Special low melt laminating films require less heat and are used when laminating materials that are sensitive to high temperatures, such as photographs.

Hot Laminating film is available in a variety of finishes:

• Matte - This is a non-reflective, slightly granular finish. It tends to make image colors more vivid.

• Satin - Provides a reduced level of glare, and has a soft sheen.

• Lustre - This finish also reduces glare, It has a sparkling sheen.

• Gloss - Best for bright colors. Adds definition, radiance