What are the disadvantages of spray adhesive?

Flat platform with a variety of roles in printing or manufacturing

Are you interested in learning more about Eco-friendly spray glue? Contact us today to secure an expert consultation!

Not to be confused with Paten

Section of a platen printing press in use. The platen is the sturdy plate which applies the pressure to the paper and type.

A platen (or platten) is a platform with a variety of roles in printing or manufacturing. It can be a flat metal (or earlier, wooden) plate pressed against a medium (such as paper) to cause an impression in letterpress printing.[1] Platen may also refer to a typewriter roller which friction-feeds paper into position below the typebars or print head. It can refer to the glass surface of a copier, and the rotating disk used to polish semiconductor wafers.

Applications

[

edit

]

Office equipment

[

edit

]

Copier

In office copiers and scanners, the platen is a flat glass surface on which operators place papers or books for scanning. The platen is also called the flatbed. Platens are also used in some printers, such as the dot-matrix printer.

Manufacturing and processing

[

edit

]

A planar in semiconductor wafer polishing

Semiconductor manufacturing

[

edit

]

In semiconductor manufacturing, specifically chemical-mechanical planarization, a flat, rotating platen covered with a pad is used to polish semiconductor wafers (see image).[2]

Screen printing

[

edit

]

In textile screen printing, a platen is a flat board onto which the operator slides the garment. It is generally made of either a plywood laminate or aluminum with a rubber laminate. Often the platen will be pretreated with a spray adhesive. This allows the garment to effectively become a rigid immobile substrate, especially important when printing multiple colors or utilizing an on-press infrared dryer. The screen is brought parallel and close to the garment (often within 1/32") and the squeegee pressure then brings the screen into contact with the garment so that the ink transfer may occur. There are many special platen types, such as those for printing sleeves or pockets, vacuum platens, platens with clamps to hold bulky materials such as jackets, and even curved platens for printing on hats.[citation needed]

Woodworking

[

edit

]

In woodworking, wide belt sanders use platens to press the sanding paper into contact with the wood being sanded. The platen sits between two steel rolls which deliver the moving force to the sanding belt. Sanding heads with a platen are used on finish sanding with papers of finer grits, when the coarser ones are typically used with contact drum type sanding heads. Stock is fed into and out of the machine on a conveyor belt. Since the abrasive belt creates a substantial pressure on the stock that tends to push the stock toward the infeed, the hold down shoes and rollers hold the workpiece down against the belt while it is moving through the machine in order to ensure uniform contact with the abrasive and continuous movement.[citation needed]

Metal forming

[

edit

]

In metal forming processes, a platen is the component that houses the mold for forging the required shape. The platen tends to be the heaviest and strongest part of the press due to the massive forces that it has to withstand. A platen for a 5000-ton press can weigh up to 350 tons.[citation needed]

For more information, please visit wallpaper spray adhesive.

Other

[

edit

]

In manufacturing, a platen is a flat plate of a press utilized in laminate, plastic and forest product industries. A platen is typically heated with oil, water, steam or electricity and is used in the production of furniture, tires, gaskets, particle board, composite heaters and plywood.[citation needed] In high frequency welding products, platens are used to put lines on PVC binders and folders down the spine lines.[citation needed]

Platens are utilized in impact testing in research; a specimen is crushed between platens.[citation needed]

The platen also refers to the fixed part of a linear motor.[citation needed]

Gallery

[

edit

]

• Replica of the Gutenberg press . The platen on the right holds the paper, and is pressed down onto the typeset.

• Cylindrical platen on a typewriter

• Cylindrical platen in a dot-matrix printer

See also

[

edit

]

References

[

edit

]

The right pallet adhesive goes a long way towards ensuring tight registration and quality prints.

There are four basic types of pallet adhesive; the one you choose to use will be dictated by your screen printing project and your personal preference.

Spray Adhesive

The most commonly used type of pallet adhesive is spray adhesive. These come in aerosol cans and are sprayed directly onto the platens. They’re easy to use and effective, and they come in several varieties so you can choose the ones that work best for your project. Heat-resistant spray adhesive is needed for jobs that will be flash cured, and web spray adhesives are used for heavier substrates, such as fleeces.

If there’s one downside to spray adhesives, it’s that the spray can fall onto nearby materials, get into your screen printing press parts or cause a buildup of adhesive on your press platens. It’s important to be careful to watch your spray and to keep any tools that could be damaged by the adhesive, such as screens, out of the way.

Water-Based Adhesive

Water-based adhesives are budget friendly, easy to use and easy to clean up. The adhesive is applied to the platen with a brush, roller or squeegee. If it starts to lose some of its tackiness, the adhesive can be reactivated with a wet sponge. Water-based adhesive can be cleaned up with alcohol.

Water-based adhesives won’t work with some heavier garments.

Bulk Adhesive

While bulk adhesives can be used in any screen printing shop, they’re popular with shops that do a high volume of prints. The adhesive comes in five-gallon buckets and can be applied with a brush or plastic spatula, or it can be sprayed on using a compression system or sprayers sold by the adhesive manufacturers.

Bulk adhesive can leave residue or affect nearby materials or screen printing press parts if they’re applied with a sprayer, and care must be taken not to get the adhesive on your press parts or materials that might be laying nearby.

Sheet Adhesive

Sheet adhesive works like double-sided tape to stick to your platen and hold your substrate in place. Sheet adhesives come either in rolls or in pre-cut sheets that are ready to apply to your platens. Sheet adhesive is usually used in small shops or for small press runs because it doesn’t hold its tackiness for very long.

Sheet adhesives also can cause problems if they’re left in place for too long; they can stick to your platen and become difficult to remove, and they can leave a residue behind.

Ultimately, the pallet adhesive you use will depend on which type you find works best on your press and in your shop. Try the different types of adhesives to find your preference, and you may find that you stock a few different types so you can customize your adhesive to your press run.

Looking for more tips about setting up your print jobs for the best possible results? Keep checking out our blog, or get in touch – we’re always happy to talk screen printing!

The company is the world’s best wallpaper glue spray supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.