I. Core Product Parameters

1. Base Material & Specifications

• Main Box Material

   

  Optional: 250g–450g ivory board, grey back white board, kraft paper, specialty art paper (touch paper, pearlescent paper).

   

  Custom imported paper available (Swedish ivory board, Japanese washi paper, etc.).

   

  For enhanced load-bearing, 120g–250g corrugated medium (E-flute, B-flute, EB-flute) can be laminated to improve compression resistance.
   
• Lining Material

   

  Optional: 150g–200g ivory board, EVA foam, pearl cotton, flocking fabric, sponge.

   

  Custom shockproof, moisture-proof, anti-static lining structures available.
   
• Tolerance Standards

   

  Paper grammage tolerance: ±5g/㎡

   

  Thickness tolerance: ±0.02mm

   

  Complies with GB/T 10335.3-2004 paper standards.
   

2. Dimension Specifications

• Custom Sizes: Any custom size (L × W × H) accepted.

   

  Common range: 5cm×5cm×5cm – 50cm×30cm×40cm

   

  Dimensional tolerance: ±0.3mm.
   
• Lid & Base Fitting Precision

   

  Gap between upper lid and base ≤1mm; no looseness or jamming after closing.

   

  Misalignment ≤0.5mm.
   
• Box Wall Thickness

   

  Pure paperboard structure: 0.3mm–0.8mm

   

  Laminated corrugated structure: 1.2mm–2.5mm

   

  Thickness reinforcement available upon request.
   

3. Structural Parameters

• Box Structure

   

  Standard lid & base (full / half cover), snap-lock lid & base, magnetic lid & base, drawer-style lid & base.

   

  Custom composite structures supported.
   
• Bonding Method

   

  Food-grade white latex (temperature resistance: -10℃ to 60℃);

   

  Hot-melt adhesive (instant curing, bonding strength ≥1.5N/cm).

   

  Key areas double-reinforced to prevent debonding.
   
• Load-Bearing Performance

   

  Vertical load capacity of empty box ≥5kg.

   

  Stackable up to 3 layers without deformation (full load at max size).

   

  Corner compression resistance ≥3N/mm.
   

4. Environmental Standards

• FSC-certified paper; recyclable and biodegradable.

   

  No optical brightener (fluorescent reflectance ≤0.5%).
   
• Eco-friendly adhesives and inks, compliant with GB/T 30986-2014 Packaging Materials – Terminology.

   

  Heavy metal content (Pb, Hg, Cd, etc.) ≤10mg/kg.

   

  No irritating odor.
   

II. Core Technologies & Processes

1. Printing Process

• Printing Methods

   

  Offset printing (CMYK, spot color; resolution ≥300dpi, color reproduction ≥95%);

   

  Flexo printing (for large solid areas, uniform ink layer);

   

  Screen printing (for embossed effects and special colors);

   

  Digital printing (small-batch custom, fast delivery).
   
• Printing Quality

   

  Clear patterns, no ghosting or missing printing.

   

  Color deviation ΔE ≤2.0.

   

  Smooth text edges, no burrs.

   

  Surface abrasion resistance ≥50 dry rubs.
   
• Registration Accuracy

   

  Multi-color registration deviation ≤0.1mm.

   

  Deviation between pattern and box edge ≤0.2mm.
   

2. Surface Finishing (Optional)

• Lamination: Gloss film (bright, waterproof, scratch-resistant); matte film (elegant, soft texture).

   

  Film thickness: 12μm–25μm.

   

  Adhesion ≥0.8N/15mm (peel test).
   
• Hot Stamping: Gold, silver, color gold, holographic foil.

   

  Clean edges, no overflow or missing stamping.

   

  Fastness ≥30 rubs.

   

  Partial or full-area stamping available.
   
• UV Coating: Local UV (highlight design, strong 3D effect); full UV (glossy, wear-resistant, anti-fouling).

   

  UV hardness ≥2H, no yellowing.
   
• Embossing / Debossing: 3D texture via mould pressing; clear, full impression; no cracking or deformation.

   

  Ideal for logos and textures.
   
• Lamination + Hot Stamping: Lamination first, then stamping for premium appearance.

   

  Strong adhesion, no peeling.
   

3. Die-Cutting & Creasing

• Die-Cutting Precision

   

  Laser or steel moulds used.

   

  Die-cut deviation ≤0.1mm.

   

  Smooth cuts, no burrs, no uncut edges or flashes.
   
• Creasing Process

   

  Special creasing rule ensures sharp, straight creases.

   

  Folding angle: 90°±2°.

   

  No cracking or breaking after repeated folding (10+ times).
   
• Layout Optimization

   

  Material utilization ≥90% to reduce cost and improve efficiency.
   

4. Forming & Assembly

• Automatic Forming

   

  Full-automatic lid & base machine.

   

  Output ≥30 pcs/min.

   

  High dimensional consistency.
   
• Hand Assembly

   

  Used for complex structures or small batches.

   

  Each process inspected to ensure smooth closing, stable structure, no skew or warping.
   
• Quality Control

   

  100% full inspection: no stains, scratches, defects.

   

  All dimensions, fitting, printing meet order requirements.

   

  Defective products 100% reworked.
   

5. Custom Process Expansion

• Window Design: Clear PVC sheet (0.3mm–0.5mm thickness, light transmittance ≥90%).

   

  Smooth edges, firm sealing.
   
• Handle: Paper handle / ribbon handle.

   

  Load capacity ≥3kg, securely attached.
   
• Custom Lining: Precision die-cut to fit product; fixed, shockproof.

   

  Partition design, flocking wrapping available.
•