Our thickened kraft bubble bag is a heavy-duty protective packaging solution for manufacturers and distributors who need maximum cushioning performance for heavy, high-value, or highly fragile products. Built with a reinforced kraft paper outer layer and a thickened, large-diameter bubble film inner layer, these bags provide substantially greater impact absorption and structural integrity than standard kraft bubble bags — making them the correct specification for heavy industrial components, precision instruments, and products that have experienced transit damage in standard packaging.
Where standard kraft bubble bags are designed for general protective packaging across a range of products, thickened kraft bubble bags are engineered for the most demanding applications — heavy weight, sharp edges, fragile assemblies, long-distance ocean freight — where standard packaging has been proven insufficient.
What Makes Thickened Kraft Bubble Bags Different?
The term “thickened” refers specifically to the bubble film construction:
Standard kraft bubble bags use 70–80 micron bubble film with 10mm diameter bubbles — adequate for most component packaging applications
Thickened kraft bubble bags use 100–150 micron bubble film with 28mm diameter bubbles — providing significantly greater cushioning depth and impact energy absorption
The larger bubble diameter creates greater cushioning depth between the product surface and the bag outer wall, absorbing more impact energy from drops and handling shocks. The thicker film prevents bubble collapse under the weight of heavier components — maintaining cushioning integrity throughout transit.
Key Features
Reinforced Kraft Paper Outer Layer
Heavy-duty kraft paper (100–120 GSM) provides maximum puncture resistance and tear strength — protecting the bubble cushioning layer and product from external damage during the most demanding freight handling conditions.
Large-diameter Thickened Bubble Film
100–150 micron bubble film with 28mm diameter bubbles absorbs significantly more impact energy than standard bubble film — protecting heavy and fragile items from drops, shocks, and vibration during international freight.
Heavy-duty Seal Strength
Thickened bags require stronger seals to contain heavy contents. Our heat-seal construction is engineered for heavy-duty applications, maintaining seal integrity under the weight and movement of packaged components during transit.
Suitable for Heavy Components
Standard kraft bubble bags have practical weight limits beyond which the bubble film begins to collapse under the product weight, reducing cushioning effectiveness. Thickened bags maintain cushioning performance for heavier components — typically rated for products up to 5–10kg depending on bag dimensions.
Custom Sizes Available
All dimensions custom manufactured to accommodate large or heavy components. Small batch orders welcome.
Applications
Heavy Electronic Assemblies
Large PCB assemblies, power supplies, server components, and industrial control units require cushioning that maintains performance under the weight of the product itself. Thickened bags are specified for assemblies where standard packaging has resulted in bubble collapse and inadequate cushioning.
Precision Industrial Components
Precision-machined components, measurement instruments, and calibrated equipment require maximum cushioning combined with puncture resistance from the kraft outer layer. Thickened kraft bubble bags provide both.
Automotive and Aerospace Parts
High-value components for automotive and aerospace applications require packaging that withstands the sustained vibration and handling of long-distance freight. Thickened construction maintains cushioning integrity across extended transit periods.
Optical Instruments and Sensitive Equipment
Microscopes, cameras, optical sensors, and sensitive measurement equipment require maximum cushioning depth to absorb transit shocks without damage.
Long-distance Ocean Freight
Products shipped via ocean freight from Southeast Asia to Europe or North America are subject to extended handling periods and container vibration — conditions that standard packaging may not withstand. Thickened bags provide the additional structural integrity these shipments require.
Specification Guide
Parameter
Thickened Specification
Kraft Paper Weight
100–120 GSM
Bubble Film Thickness
100–150 micron
Bubble Diameter
28mm (large bubble)
Bubble Height
10mm
Closure Type
Heat-seal
Custom Sizes
Yes
Frequently Asked Questions
Q: How do I know if I need thickened bags versus standard kraft bubble bags?
If your products are heavy (generally above 2kg), have sharp edges that puncture standard bags, or have experienced transit damage when packaged in standard kraft bubble bags, thickened specification is recommended. For lighter, non-fragile items, standard kraft bubble bags are sufficient and more economical.
Q: What is the maximum weight these bags can handle?
Maximum recommended product weight depends on bag size and specific construction. Contact us with your product weight and dimensions for a recommendation on appropriate construction specification.
Q: Are these bags suitable for ocean freight?
Yes. The thickened construction is specifically suited to the sustained handling and vibration conditions of ocean freight — where products are subject to movement over extended periods that standard packaging may not withstand.
Q: Are custom sizes available?
Yes. All dimensions are custom manufactured. Small batch orders are welcome.
Contact Mavis for thickened kraft bubble bag specifications: mavisv.com/contact
