VEVOR Product Branding and Labeling Specifications

Silk Printing Technology Requirements

Objective: To ensure high-quality silk printing on product surfaces.

• Appearance: No obvious dirt, bottoming, missed printing, blurring/broken lines, uneven printing thickness, misalignment, or scratches.
• Content Accuracy: Printing content, fonts, font sizes, CMYK values (color bars), patterns, and positions must match the sample. Text must not have jagged edges.
• Adhesion Test:
  1. Degrease the printed area with 99.5% anhydrous alcohol using a pure cotton cloth and let it dry.
  2. Apply 3M 600 tape to the printed area and rub it with a pencil eraser to ensure good contact.
  3. Let it sit for (90 ± 30) seconds.
  4. Grip one end of the tape and quickly pull it off vertically.
  5. Repeat 5 times in the same location. The printing is considered acceptable if there is no visible peeling.
• Alcohol Resistance Test:
  1. Wrap a pure cotton cloth soaked in anhydrous alcohol (concentration > 99.5%) around a 500g weight. The test head area is approximately 1 cm².
  2. Rub the sample surface back and forth for 50 cycles at a speed of 40-60 times/minute with a stroke of about 20mm.
  3. Result Judgment: Slight wear and fading of fonts are permissible, but the content must remain complete and clearly recognizable.
• Abrasion Resistance Test:
  1. Use a dedicated Japanese abrasive eraser (Model: LER902K) with a 500g load.
  2. Rub the sample surface back and forth for 50 cycles at a speed of 40-60 times/minute with a stroke of about 20mm.
  3. Result Judgment: Slight wear and fading of fonts are permissible, but the content must remain complete and clearly recognizable.
• Environmental Compliance: Must comply with ROHS environmental requirements.

Laser Engraving Technology Requirements

Objective: To ensure high-quality laser engraving on product surfaces.

• Appearance: No obvious dirt, bottoming, missed engraving, blurring/broken lines, burrs, bubbles, scratches, or perforation.
• Content Accuracy: Engraved content, fonts, patterns, and positions must match the sample. Font sizes should be uniform, and text should not have jagged edges or corrosion effects.
• Alcohol Resistance Test:
  1. Wrap a pure cotton cloth soaked in anhydrous alcohol (concentration > 99.5%) around a 500g weight. The test head area is approximately 1 cm².
  2. Rub the sample surface back and forth for 50 cycles at a speed of 40-60 times/minute with a stroke of about 20mm.
  3. Result Judgment: The paint layer should not discolor or peel off the base material.

Silk Printing Ink Reference Table

(For reference only, actual ink formulation by the technician)

Manufacturer Self-Inspection for Silk Printing

Common Defects:

• Foreign Matter: Dust or foreign particles on the printed film.
• Bottoming/Show-through: Base color visible due to thin printing.
• Missed Printing: Areas that should be printed are not.
• Blurring/Broken Lines: Uneven line thickness, unclear patterns, disconnected text lines.
• Uneven Thickness: Inconsistent thickness of the printed layer.
• Misalignment: Incorrect printing position.
• Poor Adhesion: Printed coating detaches easily, e.g., with 3M-810 tape.
• Pinholes: Small pinhole-like openings on the surface.
• Scratches/Scuffs: Damage due to poor protection after printing.
• Contamination/Stains: Unwanted colors or dirt on the printed surface.
• Color Difference: Deviation from the standard color swatch.

Self-Inspection Methods:

• Tools & Materials: 3M-600 tape, cotton balls, ethanol, force gauge, soft eraser, cotton swabs, etc.
• Silk Print Rubbing Resistance Test: Apply 3M-600 tape firmly to the printed surface. Hold one end of the tape and pull it away rapidly at a 45-degree angle to the surface. Repeat 3-4 times in the same location. The print is acceptable if intact; reject if it peels off. Additionally, rub with a cotton ball soaked in 95% ethanol with 5-6N force 3 times. No color loss or significant color depth change indicates passing.
• Silk Print Abrasion Resistance Test: Fix the test piece on a force gauge. Rub the printed area back and forth with a soft eraser. The force gauge should be set to (5 ± 1N). One back-and-forth motion counts as one cycle. Test for 950-1000 cycles. Confirm that the brightness and color depth of the printed area do not change after testing, and there is no missing print. This is considered acceptable.
• Ethanol Wipe Test: Wipe the test surface 3-5 times with a cotton swab dipped in 95% ethanol solution. Air dry and observe the print. The surface should show no change in gloss, no sticky feel, and no dissolution. Any of these indicate a serious defect.

Sticker Label Technical Requirements

Material: PET or other environmentally friendly materials, with matte fine frosted film or matte finish, using 3M adhesive.

Sizes: 50*40mm (R3), 40*30mm (R2).

Color: Black, White.

• Appearance: No obvious dirt, damage, or wrinkles. Printing should be free of color loss or fading. Cutting must be neat, with no obvious skewing or burrs.
• Content Accuracy: Printing content, fonts, font sizes, CMYK values (color bars), patterns, and positions must match the sample. No reprinting, misprinting, missed printing, or obvious streaks.
• Printing Content Adhesion Test: Rub the printed surface with a cotton cloth soaked in 75% alcohol with normal force for 15 seconds or 10 back-and-forth wipes. The content must not peel off or fade.
• Sticker Layer Adhesion Test:
  1. Adhere the target sticker to a clean, smooth surface.
  2. Apply conventional transparent tape (packing tape) to a corner of the sticker and press firmly.
  3. Tear the transparent tape upwards at a 45° angle to the sticker.
  4. Repeat this process 3 times at each corner. The target sticker must not delaminate, be difficult to remove, or peel off.
• Water Resistance: Stickers should have a certain degree of water resistance and should not deform or detach in humid environments.
• High/Low Temperature and Humidity Cycle Test:
  1. Low Temperature: -20℃ for 3 hours.
  2. Normal Temperature/Humidity: 20±2℃, 70±3% humidity for 1 hour.
  3. High Temperature: 80±2℃ for 3 hours.
  4. Normal Temperature/Humidity: 20±2℃, 70±3% humidity for 1 hour.
  5. High Humidity/Temp: 50±1℃, 98±2% humidity for 1 hour.

  Perform two cycles of the above tests. After testing, check the sample for detachment, bubbling, unevenness, lifting, or cracking. No color change should occur.

• Environmental Compliance: Must comply with ROHS environmental requirements.

Product Model and Specification Labels

Labels for various VEVOR backpack sprayer models include product category, English name, manufacturer model, and supplier SKU. They also display certifications like FC and CE.

SN Code Requirements

Serial Number (SN) format: S/N: XXXXXX XXXX X XXXX

• First 6 digits: Production Date (e.g., 220728 for July 28, 2022).
• Next 4 digits: Supplier ID Code (ERP system).
• Next 1 digit: Differentiator for multiple SKUs on the same day (1-9).
• Last 4 digits: Based on order quantity (0001-9999).

Important Notice

1. Upon receiving the product, please fully charge the battery, otherwise it may not work properly due to insufficient power. ?
2. Before long-term storage, please store the product after a full charge. Ensure a full charge before use.