Screen printing is to use screen printing film as a printing pattern on a screen made of polyester mesh or steel mesh. After exposure and development, a screen printing pattern is formed, and the screen printing ink penetrates the screen plate under the action of the blade pressure to form a pattern with a concave-convex three-dimensional effect on the bottle. The process flow is as follows:

The main problems and solutions of production:

1, burrs

There are burrs, fluffing, and sawtooth phenomenon next to the font, which is affected by the temperature and humidity of the workshop; the surface tension of the glass is too large; the ink is too thick; the squeegee printing speed is too fast.

Solution: control the temperature at 23-28 degrees, and the humidity at about 50%-60%; flame treatment on the glass surface before screen printing; add an appropriate amount of 3%-5% filler to the ink; wipe the glass surface with alcohol; or Add diluent to the ink; the temperature is controlled at 23-28 degrees, and the humidity is about 50%-60%; appropriately slow down the blade printing speed.

2, sticky oil

The excess ink, oil stains, gloves, dirty hands and oily hands that appear around the screen-printed font are brought to the bottle; the bottle is placed too close, the ink is not dry, and the ink sticks to the bottle; the bottom of the screen leaks or sticks to oil; The jig is glued with ink.

Solution: pay attention to washing hands and replace dirty gloves; avoid touching the bottle body with bare hands and dirty gloves; place the bottle slightly sparsely, and gently push the pad paper filled with glass bottles into the furnace to reduce collision; layer of the backing plate to avoid collision during the bottle pushing process to prevent ink from sticking to the bottle; use blue sealing glue or transparent glue to repair the screen (oil leakage); replace the screen that cannot be repaired (oil leakage); use thinner Clean the bottom of the screen; wipe the glass surface with alcohol.

Bronzing process introduction

Hot stamping: when the low-temperature screen printing ink is not dry, the product is pressed with hot stamping paper at a high temperature of 200 degrees. Pressing each other in a short period of time, the metal foil or pigment foil is transferred to the surface of the hot-printed product according to the graphic of the hot-stamping stencil

For some high-end products, customers will bronze the trademark or brand logo on the product. Gold and silver are the main colors, and other colors of bronzing products can also be produced, but due to the limitation of raw materials, color matching cannot be carried out.