3 Electro-aluminum transfer printing process and precautions.
The electro-aluminum transfer printing process mainly includes ordinary printing (different printing materials) and electro-aluminum hot pressing transfer.
a. Process flow:
Pattern design—→drawing——→Preparation of a printing plate and printing material (special adhesive ten color paste) Screen printing pattern→→Anodized aluminum hot pressing→→Exfoliation of excess anodized aluminum—→finished product
b. Note:
The key factor affecting the quality of the transfer of aluminum is the choice of transfer adhesive. Electro-aluminum transfer printing adhesive is also a kind of hot-melt adhesive. Although the hot-melt adhesive used in this type of hot-melt adhesive and electrostatic flocking is the same, it can use polyethylene, poly- thiol, polyester, EVA resin, etc. However, the adhesive form is different. The former is used in powder form, and the electro-aluminum transfer is a hot-melt adhesive in the form of an emulsion. The formula is as follows (weight ratio):
EVA Emulsion 90
Emulsified pulp 15
Penetrant 1
Coloring paint (or dye) Appropriate amount of water
As the aluminum is itself a metal, the texture is hard. If it is necessary to print on soft fabrics, the pattern design should not consider large-area printing. It is only suitable for printing on small areas of dots and lines.
In order to prevent the incomplete transfer of galvanized aluminum or the detachment of the galvanized aluminum after washing, the appearance of the overall pattern is affected, so the depth of color of the printed adhesive should be as close as possible to that of the galvanized aluminum.
The degree of dryness of the adhesive after screen printing directly affects the transfer effect of the electrodeposited aluminum, and it is appropriate to perform hot pressing near the dry state.
The temperature and time of hot pressing should be taken into account in the degree of tolerance of the fabric. Some fabrics cannot withstand high temperatures and transfer printing cannot be performed.
The hot press temperature and time depend on the properties of the adhesive. Usually hot pressing temperature can not be too high, high (aluminum itself is also coated with adhesive) no graphic part easy to transfer adhesive.
The stripping of galvanized aluminum paper must also be very careful. It should be lifted along the warp (weft) direction of the fabric to prevent it from breaking and the speed of peeling cannot be too fast.
Bread basket,stainless wire basket,stainless wire bread basket,Metal Wire Bread Basket,steel bread basket,etc. we offered that you can trust. Welcome to do business with us.
Kichen Rack is made of high quality 304 stainless steel, This kind of material steel luxury, never rust, resist corruption, easily clean, safe, healthy and durable. Prevent rust or chemicals from contaminating food and damaging health
stainless wire basket,stainless wire bread basket,Metal Wire Bread Basket,steel bread basket,versatile basket
Shenzhen Lanejoy Technology Co.,LTD , https://www.baking-rack.com