Eight kinds of production process of the PC and PVC panels
PC and PVC panels under the eight kinds of production process, first of all, introduce the characteristics of the PC label: transparent PC sign on polycarbonate (
As the base material, through mold thermal plastic injection molding, and then to process after processing, to complete the PC brands pattern color and protect a decorative plate.
Because the PC material has good transparency, wear resistance, corrosion resistance, thus raised the grade of the product.
A, PVC label product design of transparent PVC label on organic glass (
As the base material, through mold heat molding or cutting molding board for subsequent processing, after complete design color sign another decorative panels and its protection.
PVC label transparency and abrasion resistance than the PC label is a bit poor, but processability slightly stronger than the PC panels.
Transparent PC, PVC signs generally USES elliptic or circular design, suitable for product design sign, plate basic did not use this process.
The color of the product is given priority to with color, and USES two color.
Graphic sign some directly USES the plate production, its product design, commonly used words fill paint finish after screen printing or engraving.
Second, the mould machining because of polycarbonate (
, organic glass,
More complicated than the ABS engineering plastics injection molding characteristics and should be considered in the mold processing product shrinkage ratio and positive transparent effect on the product shape.
Especially mould processing finish, flatness have bigger influence on the plastic injection products, mould jiaokou choice is also very important.
If jiaokou choose undeserved, can cause the product shrinkage suppress and cut gate defects, influence the appearance of the products.
Where possible, the gate is the best choice in the visible surface;
Therefore, die usually adopt latent type gate.
1) polycarbonate, sign injection molding process, organic glass in front of the injection must be carried out within the oven baked in aggregate, the time and temperature should be optimized according to the mold condition and material properties.
Through preheating material can keep the transparency of product after injection, to prevent the aggregate quick heat molding product transparency decline, product surface yellowing.
Due to the form, design of the products is hollow, the concave part of any particle, defects, will enlarge defect in the positive perspective.
Therefore, in the injection molding, to the mold cavity and other parts of the observed closely.
Once appear problem, should be handled in a timely manner.
(2) after injection molding products, to the gate to nap, try to avoid defects.
To prevent products of warp, the product after the injection of ejection, product cooling should be best solution.
After finishing products, to adopt appropriate packaging, in order to avoid the friction between the other products.
Four, color processing, PC, PVC signs after molding, products generally shows colorless transparent.
According to the requirements of the product design color product processing.
At present the color of the base material are mostly choose plastic printing ink, using screen printing processing.
The steps are: (
According to the product design processing web plate;
Select the reliable product positioning and production tooling;
To make ink printing, since the dry into the oven to dry after 10 min.
Oven temperature should be controlled within 100 ℃, 1 time.
Some products can be used in a dry way.
In order to ensure the products printed color thick, general print twice.
Five, vacuum plating product protection before vacuum aluminum plating to the bottom of the product, in order to obtain the plated surface, we need the protection of the plating surface should take reasonable way.
Currently used sticker stick to protect the surface plating, carefully, accurately in the paste.
Six, metallic processing (1) the metal color of transparent PC, PVC signs design can use hot stamping film hot molding, vacuum aluminum plating.
Hot stamping film anti hot forming can only in the plane, and the vacuum aluminum plating forming can be conducted in plane and concave.
Due to the transparent PC, PVC signs design to form three-dimensional effect, so the color processing adopts vacuum aluminum plating metal forming.
Vacuum aluminum plating step is: (
The bottom of the spray coating materials;
Finish aluminum plating in the vacuum coating equipment;
Protective cover (
General plastic brunet paint spraying)
(2) in this paper, the hot stamping film hot forming way of processing metal color, the color should be done after hot stamping metal color.
Use the method of vacuum aluminum plating molding processing concave cavity of the metal color, should need to display the pattern color.
(3) using carving processing transparent PC, PVC signs, generally to sculpture, then color processing.
To directly in the plate for printing, should pay attention to the order of the color printing, avoid the multicolor printing color.
7, product packaging and stick adhesive metal color, after the completion of processing and protection for cleaning products, get rid of the plated surface protection of paper and the transparent surface cleaning.
After processed, the overall quality of the product inspection, qualified products installed with double-sided tape, according to the requirement and packing of the products.
Eight set some PC, PVC signs, products can be installed on the plastic floor or other plastic parts.
If the product will be designed Mosaic, the product installation size must be accurate.