Double Core Custom Paper Mailers 18.5cm Heavy Duty Paperboard Mailers For Phones

Double‑Core Honeycomb Mailer 18.5x(28+4)cm – 4‑Layer Ultra‑Cushioning for Smartphones & Small Electronics – Biodegradable

Description:
This 4‑layer honeycomb mailer (18.5 cm wide, 28 cm long + 4 cm flap) offers double‑density protection for medium‑sized delicate electronics such as smartphones, power banks, portable hard drives, and small cameras. The dual honeycomb core (two separate honeycomb layers) absorbs impacts from multiple directions, reducing the risk of screen damage or internal component shock. The outer kraft layer is tear‑resistant, and the inner kraft is smooth to prevent scratches. Self‑seal adhesive closure included. Made from 100% recycled kraft paper, fully compostable and recyclable. A plastic‑free alternative to bubble wrap and foam.

Product Specifications:

Company Introduction:
HUANCHEER’s double‑core mailers are the result of extensive drop‑testing to meet the needs of electronics shippers. Our 18.5x28cm size is particularly popular for shipping iPhones and Android devices. We use water‑based adhesives and solvent‑free lamination. Every batch is tested for burst strength (Mullen) and edge tear. We also offer anti‑static inner coating for sensitive electronics (custom order). Choose HUANCHEER for the greenest, strongest paper mailer on the market.

Key Features:
• Size: 18.5 x (28+4) cm – fits smartphones up to 6.7", power banks
• 4-layer structure: kraft / honeycomb / honeycomb / kraft (4×80 GSM)
• Double honeycomb core – maximum shock absorption
• Self‑seal adhesive strip – quick and secure
• 100% recycled brown kraft – biodegradable and recyclable
• Ideal for phones, hard drives, small cameras, medical devices
• Custom sizes, anti‑static coating, logo printing available
• MOQ: 10,000 pieces

Business Trade Terms:
• Price: RMB 0.5 per piece
• MOQ: 10,000 pieces
• Payment: T/T, L/C
• Supply ability: 10,000 pieces per week
• Sample: Free (shipping cost applies)
• Lead time: 5-8 work days

Shipping Information:
• Packing: Carton boxes, palletized
• Delivery: 5-8 work days after deposit
• Ports: Shenzhen, Hong Kong
• FOB, CIF, EXW terms
• Air freight for urgent bulk orders

FAQ:
Q1: Can this mailer protect a phone from a 1‑meter drop?
A: Yes, tested with a phone in a slim case. For phones without cases, we recommend adding a screen protector.
Q2: Is the inner surface lint‑free?
A: Yes, the kraft paper is smooth and low‑lint, safe for screens.
Q3: Can I order this with a zipper closure instead of self‑seal?
A: Yes, custom closures available (MOQ 10,000).
Q4: Does the double honeycomb add stiffness?
A: Yes, it makes the mailer more rigid, providing better resistance to bending.
Q5: Is this mailer approved for lithium battery shipping?
A: The paper material is safe, but please follow your carrier’s regulations for battery labeling.
Q6: Can I get a sample of the 4‑layer construction?
A: Yes, contact us for a free sample (shipping fee applies).

Tags:
double honeycomb phone mailer, 18.5x28cm padded envelope, 4-layer crush resistant, smartphone shipping bag, eco electronic packaging, 80+80+80+80 GSM, HUANCHEER