
Product Function
Paper heat seal bags are produced by applying a heat-seal coating layer evenly onto high-quality white wood pulp base paper. The product requires no additional glue or tape. A strong seal is achieved through heat pressing, with high seal strength and good closure integrity that resists bag rupture and leakage. The coating also provides water resistance, oil resistance, and moisture protection. The paper surface is white, smooth, and offers excellent printability. The product is compatible with high-speed automated packaging lines and serves as a core base material for small bag packaging in the food, daily chemical, and pharmaceutical sectors. The weight range covers 60 to 120 gsm to suit different contents and bag sizes.
Application Segments
In the snack food sector, the paper is used for individual packaging of candies, chocolates, nuts, biscuits, and dried meat. It seals quickly and runs on automatic packaging lines. In the baking industry, it is used for bread bags, sliced cake packaging, and mooncake individual wraps. Moderate moisture resistance helps maintain product texture. In the beverage powder sector, the paper is used for instant coffee, milk tea powder, protein powder, probiotics, and tea bag outer wrappers. Secure sealing prevents powder leakage and moisture absorption. In the daily chemical and pharmaceutical sectors, the paper is used for wet wipe packaging, sample sachets, medical dressings, and pharmaceutical powder sachets. The white surface allows clear printing of product information and brand identity, suitable for retail display.

Production & Customization
Zhejiang Xinzhongxin Paper Industry Shares Co., Ltd. has mature processes for heat-seal coating paper. The company can customize heat-seal coating formulations and paper specifications based on the customer's packaging equipment type, heat-seal temperature requirements, and product characteristics. The company maintains about 15,000 tons of raw paper inventory and is equipped with imported high-speed slitting and rewinding equipment with a maximum processing width of approximately 2,400 mm.



Ordering Information
OEM and ODM services are supported. The standard MOQ is one container (about 25 tons). Samples can be provided before mass production for heat-seal strength testing and machine runnability confirmation. Standard lead time is 1–2 months; custom products take 2–3 months. Payment terms are 30% deposit with 70% balance for standard orders, and 50% deposit with 50% balance for custom orders. Products are packed in kraft paper with round corner protection. A 6-month warranty is provided.
Product Specifications
|
Parameter |
Description |
|
Base Material |
White Wood Pulp Base Paper |
|
Coating Type |
Heat-Seal Coating Layer (Single-Side or Double-Side) |
|
Core Functions |
Heat Sealing, Waterproof, Oil-Proof, Moisture Protection |
|
Weight Range |
60–120 gsm (Customizable) |
|
Finished Products |
3-Side Seal Bags, Back-Seal Bags, Pillow Bags, 4-Side Seal Bags |
|
Standard MOQ |
1 Container (approx. 25 tons) |
|
Standard Lead Time |
1–2 Months |
|
Custom Lead Time |
2–3 Months |
|
Warranty |
6 Months |
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