Recommended printing technology crude decals

 

Print technology crude decals.

 

Properties and applications "Sliding decal."

 

Features of manufacture. Intermediate image is printed on a paper medium, and then a layer of paint with water transferred to the product, followed by drying and varnishing.

 

 

Scope. Applied in those cases when direct printing is impossible or ineffective.

Image stability. Without protective lacquer layer of paint is not enough resistant to mechanical impact and abrasion. Laminated decal has good resistance.

Sealing surface. The elasticity of the paint layer allows to put an image on such geometric surfaces as cylinders, cones, spheres, as well as more complex surfaces.

Products - Fairings motorcycles, sports equipment, protective helmets, Christmas decorations, stickers, fridge, model (aircraft, cars, ships), children's toys, etc.

 

 

Materials for production.

 

Gummed paper. This paper, which on the one hand a layer of gelatin.

 

 

Property. When wetted with water soluble gelatinous layer, and coatings can be pushed from the paper and transferred to the product. To ensure a good combination of colors (Dimensional stability of paper) during printing, the working area should be maintained at a temperature 22-25 ° C and relative humidity of 60%. Most heavily on the stability of the paper affected by humidity. Domestic paper has lower stability, which is reflected in its twisting around the edges. If the paper begins to curl is the first sign of any of its poor quality or incorrect indoor conditions.

Effect of moisture during the drying of paper can change its geometric shape (curl) is derived from the fact that it has a 2-layer structure (layer of the paper itself 1st, 2nd gelatinous coating). Each layer in its own way expands or contracts due to moisture absorption. During the drying temperature is decreased moisture in the paper - paper shrinks and vice versa.

Adaptation of paper. Before printing, the paper must be adapted to the humidity in the room.

Drying on the rack - paper laid out on a rack and leave to mature 4-12 hours, in order to make it flush its moisture with humidity in the room.

 

 

Drying tunnel - before printing paper chase through the stove need for its pre-shrinkage. If, during printing there is a long interval between the colors at which paper can collect moisture from the room, it is necessary to conduct re-adaptation or pre-packaged paper in sealed plastic bags.

 

 

The ink should have good elasticity after drying.

Mounting lacquer plays the role of foil and helps with the transfer of the image, which has a complex contour or consists of several not related to each other fragments. After drying and assembly is removed or burn upon firing.

 

 

Structure of colorful bags.

 

Colorful package may consist of a maximum of 4 layers. 1st layer - substrate, 2nd layer - image. Third layer - the transparent layer 4th layer assembly lacquer.

 

 

Print.

 

When printing, be aware that the decal is made on a "multi-layered pie", which is printed in a certain order.

Print substrate. The substrate is usually printed with white paint (available and transparent base).

Print the image, and then strictly following the sequence defined by the designer printed next color.

Printing varnish in custody image varnished a gloss, matt and thickness. To make the varnish opaque shade it added matting powder.

Print mounting varnish - If the image is broken fragments to save time on installation makes sense to print mounting layer that connects these pieces and then mounting the product it can be removed.

 

Drying.

 

Drying on the shelves - drying time on the rack depends on the room temperature and amount of inhibitor added to the paint.

Lock the foot. High humidity in the room and there is a chance nedosushennoy paint adhesion decal sheets with each other. To prevent this situation, you need to make a good final drying decal. If the temperature is low in the shop less than 22-25 ° C apply the heater.

IR drying tunnel - (T max 40-60 ° C) are IR-drying avoid dehydrating the gelatin layer, which can result in poor wetting and shear decal from the paper.

 

Packing decal.

 

Packing decal - carried in a sealed plastic bag stacks of 20-30 sheets.

Storage decal - decal should be stored in sealed plastic bags.

Close