Common Quality Issues and Solutions in the Grout Transfer Film Process

Grout transfer film Transfer printing is a printing process in which a transfer paper coated with pigments or dyes serves as the medium, and through heating, pressure, and other means, the ink layer on the medium is transferred onto the substrate. Due to its ease of printing and the ability to customize colors and patterns, grout transfer film is widely used; however, it often encounters various quality issues during the heat-transfer process. Below Will be listed Some Grout transfer film Craftsmanship Common quality issues and their solutions, for Everyone Reference.

01  A patterned print appears across the entire surface.

Phenomenon

Some spots and patterns appear on the full‑bleed areas of certain products.

Cause

Low ink viscosity, improper doctor blade angle, insufficient ink drying temperature, static electricity, and so on.

Exclude

Increase viscosity, adjust the blade angle, raise the oven temperature, and apply a pre‑coating of electrostatic agent to the back side of the film.

02  Brushed finish

Phenomenon

Comet-like streaks appear along one edge of the pattern, typically at the junction between the white ink and the design.

Cause

The ink contains relatively large pigment particles, is not sufficiently clean, has high viscosity, and may exhibit static electricity, among other issues.

Exclude

Filter the ink to reduce its concentration; for white ink, pre‑grinding the blade and applying an electrostatic treatment to the film can help. Alternatively, use a sharpened chopstick to scrape thoroughly between the squeegee and the printing plate, or add an antistatic agent.

03  Color registration error, showing the substrate.

Phenomenon

When several colors overlap, color shifts can occur, particularly in the background.

Cause

The machine itself has poor precision and exhibits variability; the plate‑making process is substandard; and the background color expands and contracts improperly.

Exclude

Manually register using the gate tube. ;  Reformatted edition ;  It does not affect the visual appearance of the pattern, allowing for expansion and contraction or white areas on select patterns.

04  The ink cannot be scraped off cleanly.

Phenomenon

A hazy appearance has appeared on the printed film.

Cause

The scraper holder is loose; the layout is not clean.

Exclude

Re-adjust the doctor blade and securely fasten the control carriage; clean the printing plate, using a cleaning powder if necessary; an air‑blowing system can be installed on the reverse side between the plate surface and the doctor blade.

05  Printed color chipping

Phenomenon

Significant localized discoloration is observed, particularly in the pretreatment films applied to printed glass and stainless steel.

Cause

The printing of the color layer on the treated film tends to peel off relatively easily; static electricity; and the color ink layer is thick and insufficiently dried.

Exclude

Increase the oven temperature and reduce the speed.

06  Poor transfer fastness

Phenomenon

The color layer transferred onto the substrate can be easily peeled off with a test strip.

Cause

Improper debonding or back-adhesion primarily manifests as a mismatch between the adhesive and the substrate.

Exclude

Replace the base adhesive (mix if necessary); replace the lining rubber to match the base.

07  Anti-stick

Phenomenon

When rewinding, the ink layer peels off, and the noise is very loud.

Cause

Excessive winding tension, ink drying, excessively thick labels, indoor temperature and humidity, static electricity, and excessive printing speed.

Exclude

Reduce winding tension, or appropriately decrease the printing speed; control indoor temperature and humidity; apply a static‑dissipative coating in advance.

08  Lose some points

Phenomenon

On the QianShang online banking platform, some irregular, faintly visible specks appear at the bottom of the page—similar to dots that fail to print.

Cause

The ink won’t transfer.

Exclude

Clean the layout, use an electrostatic ink‑absorbing roller, deepen the screen, adjust the doctor blade pressure, and appropriately reduce the ink viscosity without affecting other process parameters.

Gold, silver, and pearlescent hues create an orange-peel‑like ripple effect in the print.

Phenomenon

Gold, silver, and pearlescent finishes often exhibit an orange-peel‑like texture over large areas.

Cause

Gold, silver, and pearlescent particles are inherently large and cannot be evenly dispersed in the ink reservoir, resulting in uneven density.

Exclude

Before printing, the ink must be thoroughly mixed; use a pump to transfer the ink into the ink tray and place a plastic air‑blowing tube on the tray. This helps slow down the pace of a company’s printing operations.

10  Poor tonal reproduction in printed materials.

Phenomenon

Patterns with excessively large tonal transitions often cannot be printed on the light‑screen areas, resulting in insufficient density in the dark tones or inadequate depth in the midtones. - Deep intersection is evident.

Cause

The transition range of the printing网点 is limited, and the technological capabilities for ink adhesion to the film are underdeveloped.

Exclude

Use an electrostatic ink‑absorbing roller; divide it into two sections.

11  The gloss on the printed material is faint.

Phenomenon

The color of the printed material is lighter than that of the sample, especially when printed with silver.

Cause

The ink viscosity is too low.

Exclude

Add original ink to increase the ink viscosity to the appropriate level.

Phenomenon

The film has streaks and filaments.

Cause

Insufficient temperature control (inadequate decomposition analysis of silicon) and improper use of the solvent ratio.

Exclude

Increase the oven temperature to a set level.

13 A white font with serrated edges

Phenomenon

Jaggies often appear along the edges of characters with high whiteness requirements.

Cause

The ink’s particle size and pigment quality are not fine enough; the ink also exhibits relatively low viscosity, among other characteristics.

Exclude

Sharpen the blade or add additives, adjust the doctor blade angle, increase the ink viscosity, and switch from electro‑etching to laser engraving.