Heavy carton is the "hercules" of the packaging industry, designed for bearing 200 kg to 2 tons of goods, the compressive strength needs to meet the GB/T6544-2008 standard (≥20kPa). The material is made of high-strength kraft paper or recycled paper, with wavy corrugated core paper (such as A/B/C corrugations) in the middle, and some parts are coated with moisture-proof coating on the outer layer. In terms of craftsmanship, double-pit or triple-pit structures (two or three layers of corrugated core paper stacked together) are commonly used, and durability is enhanced through edge reinforcement such as metal corner wrapping.
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Generally speaking, for ordinary heavy-duty cartons, their load-bearing capacity is approximately 200 to 300 kilograms.This kind of carton usually uses
thick cardboard material, such as K=A, K=B and other high strength corrugated cardboard, corrugated type and corrugated structure will also affect its load-bearing performance.
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In some special requirements, such as heavy-duty cartons that need to carry relatively heavy goods in logistics transportation, their load-bearing capacity may reach 300 to 500 kilograms or even higher. At this point, the structural design of the carton will be more meticulous. It may adopt measures such as multi-layer cardboard composite, reinforcement of corners and sides, etc., to ensure that it will not break or deform when bearing a large weight.
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II. Factors Affecting Load-bearing Capacity
- Cardboard material and corrugation type: Thicker cardboard material and specific corrugation types (such as A-type corrugation which is relatively hard and can provide better support) will affect the load-bearing performance.
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- Structural design: Multi-layer cardboard composite, reinforcement corner and side and other structural design measures can improve the load-bearing capacity.
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- Size and shape: Smaller-sized and more regular heavy-duty cartons, under the same material and structure, can usually bear relatively greater weight.However, cartons with larger size or irregular shape may have a reduced load-bearing capacity due to uneven force distribution.
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- Environmental conditions: When the humidity exceeds 65%, the load-bearing capacity of the carton may decrease by more than 30%.
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III. Advantages of Heavy-duty Transport Cartons for Large and Heavy Items
- Core Performance Advantages
1. Outstanding Load-bearing and Protection Ability
High strength support: Using multi-layer corrugated structure or reinforced cardboard, the bearing capacity is close to that of wooden boxes, and the compression strength of some models can reach 3-5 tons, which can effectively protect heavy or precision equipment.
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Excellent buffering performance: The buffering effect is 2 to 8 times better than that of traditional corrugated boxes. Combined with waterproof treatment (such as surface coating), it can adapt to humid environments, especially suitable for fragile and easily deformed items.
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2. Lightweight and Logistics Efficiency Improvement
The weight is only 1/3-1/5 of the wooden case: Significantly reduce the transportation weight, reduce labor costs and handling difficulties, and reduce the packaging volume (no wooden stick fixed), improve the container loading rate, reduce freight.
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Easy assembly: Foldable design, no need to hammer nails, can be quickly fixed with packing straps, and the bundling operation time is reduced by more than 50% compared with wooden boxes.
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- Economic and Compliance Advantages
1. Comprehensive Cost Reduction
Materials and labor costs: The auxiliary materials such as waterproof paper, plastic film and nails required for wooden cases are eliminated, and the average cost is more than 20% lower than that of wooden cases.
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Warehousing and transportation optimization: Storage in folded state to save warehouse space; All paper materials are recyclable, reducing waste disposal costs.
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2. High Efficiency of Export Clearance
No fumigation, no commodity inspection: In line with international environmental protection standards, it avoids the fumigation and disinfection process required for wooden crates due to wood materials, shortens customs clearance time, and is especially suitable for exports to strictly quarantinable countries such as the European Union, the United States, and Australia.
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- Environmental Protection and Customization Advantages
1. Green and Sustainable
100% recyclable: All paper materials and environmentally friendly glue, in line with the policy trend of "substituting paper for wood", reducing the consumption of forest resources.
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2. Customization and Brand Enhancement
Flexible printing and design: logo, text or pattern can be printed on the surface to improve the identification of product packaging;Support according to the item size, shape customization, suitable for heavy machinery, precision instruments, fragile and other special needs.
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IV. Key Factors in Choosing Heavy-duty Cartons
- Nature of goods: Different goods have different weights and volumes, so different types of corrugated cardboard need to be used for protection.For light weight goods, the use of A corrugated or B corrugated can meet the protection needs; For medium-weight goods, it is recommended to use B flute or C flute. For heavy goods, use cardboard of B flute or higher thickness, such as E flute or F flute.
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- Transportation distance: For long-distance transportation, corrugated boxes of grade B or higher should be selected to ensure that the boxes have sufficient strength and pressure resistance during long-distance transportation.
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- Environmental conditions: In rainy areas, rainproof measures should be taken when transporting heavy corrugated boxes, such as covering the boxes with plastic sheets and securing them with ropes, or choosing a truck with a carriage.
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Select the core of the heavy cartons due to its high cost effective, sustainable, space utilization efficiency and environmental protection packaging performance, appearance, improve product added value and meet the future packaging industry "in paper generation wood", the development trend of low carbon environmental protection.These advantages make it widely used in machinery, automotive, electronics, logistics and other industries, and gradually replace the traditional wooden box to become the mainstream packaging choice.
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If you are looking for
a full range of heavy-duty transport cartons, large cartons or extra-large cartons, Shiteng Packaging is your ideal choice.Shiteng provides a variety of packaging solutions to meet different transportation needs, and has been trusted by customers for many years. We are committed to providing high-quality and durable packaging solutions to make your transportation process easy and worryfree. From freight cartons to large cartons needed for moving, Shiteng can provide you with high-quality and convenient services.
Guangdong Shiteng Wisdom Technology Co., Ltd.
