ISO 9001:2015 Certified Manufacturer · Kosamba, Surat, Gujarat
FAQs · Answer Engine Ready

Every question buyers actually ask. Answered straight.

What does this FAQ cover?

64 answers across seven areas — corrugated basics, strength & testing, moisture & export, pricing & GST (5% since 22 Sep 2025, HSN 4819), ordering & design, delivery across our 160 km Surat radius and pan-India network, and sustainability. If your question isn't here, our engineers answer within 4 business hours.

Corrugated basics
What is a corrugated box?

A box made from corrugated fibreboard — a fluted paper medium glued between flat kraft liners. The flutes work like arches, giving strength and cushioning far beyond the material’s weight.

What is the difference between a carton and a corrugated box?

A folding carton is single-layer paperboard for retail unit packs; a corrugated box is the multi-layer transit pack. Most products use a carton inside and corrugated outside.

What does "ply" mean — 3-ply vs 5-ply vs 7-ply?

Ply counts the paper layers. 3-ply (single wall) suits up to ~15 kg; 5-ply (double wall) up to ~40 kg; 7-ply (triple wall) up to ~75 kg, per IS 2771:2022 bands.

What is a flute, and which type do I need?

The wave layer between liners. A-flute (~4.5–5 mm) cushions best; B-flute resists puncture and prints well; C-flute is the general workhorse; E-flute gives premium print for retail and e-commerce.

What is GSM in packaging?

Grams per square metre — paper weight. Indian kraft liners typically run 120–250 GSM, fluting medium 100–150 GSM; higher GSM generally means stronger, heavier board.

What is kraft paper?

Strong wood-pulp paper made by the kraft process — the brown paper corrugated board is built from; available in recycled and virgin grades.

What is an RSC box?

Regular Slotted Container (FEFCO 0201) — the world’s most common style: all flaps the same length, outer flaps meeting at the centre.

What is a die-cut box?

A box cut on custom tooling for shapes RSCs can’t do — mailers, self-locking trays, inserts and display packs — with clean folds every time.

How do I measure box dimensions correctly?

Internal Length × Width × Height, in that order. Internal dimensions protect the product; external dimensions matter for palletising and couriers.

Can a corrugated box be any size?

Yes — corrugated is made to order. IS 2771:2022 caps combined L+W+H per grade (up to 2,921 mm on the heaviest 7-ply band), and we manufacture to your exact spec.

What is white-top corrugated?

Board with a white outer liner for premium print contrast — common in retail, e-commerce and branded shippers.

What is single-face corrugated?

One liner plus exposed flutes — used as protective wrap and void-fill rather than boxes.

Strength & testing
How is box strength measured?

Three tests: Bursting Strength (rupture, kgf/cm²), Edge Crush Test (stacking backbone, kN/m) and Box Compression Test (what the finished box carries, kgf).

What is bursting strength / BF?

Hydraulic pressure at which board ruptures, per IS 1060. IS 2771:2022 minimums: 6–10 kgf/cm² (3-ply), 12–17 (5-ply), 24–35 (7-ply).

What is ECT and why did IS 2771:2022 add it?

Edge Crush Test measures crush resistance along the flutes — the best predictor of stacking strength. The 2022 revision mandates 3.0–12.4 kN/m across grades.

What is BCT and the McKee formula?

Box Compression Test capacity, estimable as BCT ≈ 5.87 × ECT × √(caliper × perimeter), then verified physically on the real box.

What safety factor should stacking use?

2× for short distribution cycles up to 4× for long-hold warehousing (ASTM D642 practice) — creep reduces usable strength to 50–60% of the lab peak.

How much weight can a 5-ply box carry?

Engineered correctly, 20–40 kg per IS 2771:2022 — but stack height, duration and humidity move the real answer; we calculate rather than assume.

What is 32 ECT?

The everyday e-commerce/shipping benchmark board grade; Amazon India’s single-wall norm is 200 lb/in² burst or 32 ECT.

Do you test every lot?

Yes — bursting, Cobb, GSM and compression are tested per lot in our in-house lab, with records shared on request.

What is ISTA testing?

International Safe Transit Association protocols (1A, 3A, 3E) simulating drops, vibration and compression for parcel and unitised freight.

Why do boxes that pass lab tests still fail in transit?

Humidity and creep — board loses 30–50% strength in high RH, and sustained loads erode capacity. Specs must be set for the journey, not the lab.

Moisture & export
What is the Cobb test?

Water absorbed by board (g/m²) in a timed interval per IS 4006/TAPPI T441 — lower is better. It’s how "moisture-resistant" becomes a number instead of a claim.

What Cobb value should export boxes have?

Export-grade work typically specifies ≤30–40 g/m²; IS 2771 caps standard board at 225 g/m² over 30 minutes — a huge gap that explains sea-freight failures.

How much strength does a box lose in humidity?

30–40% at 80% RH and over 50% at 90% RH — the actual conditions inside sea containers and monsoon warehouses.

Moisture-resistant vs waterproof — what’s the difference?

Moisture-resistant manages humid air over time; waterproof adds higher-barrier coatings for direct water contact (ice, condensation, washdowns).

Are your moisture coatings recyclable?

Yes — we default to water-based polymer barrier coatings that stay repulpable, unlike traditional wax dipping.

What happens inside a sea container?

Interior humidity regularly exceeds 90% RH across a 30–45 day voyage; uncoated board softens and stacks collapse. Cobb-verified board is the fix.

Do chemical shipments need Cobb testing?

For UN/dangerous-goods corrugated packaging, Cobb testing is mandatory (49 CFR §178.516) — compliance, not preference.

Which ports do your export despatches align to?

Mundra (India’s first 200-MMT port), Hazira and Nhava Sheva — our NH-48 plant times consignments to vessel cut-offs.

Pricing & commercial
What is the GST rate on corrugated boxes in India (2026)?

5%, reduced from 12% effective 22 September 2025 (56th GST Council). Re-check any older rate cards.

What is the HSN code for corrugated boxes?

HSN 4819 — corrugated cartons/boxes commonly under 48191010.

What decides corrugated box price per kg?

Board GSM and ply, kraft paper prices (up ~6% through 2025), printing, quantity and conversion complexity. Share specs for an engineered quote.

What is your minimum order quantity?

MOQs depend on size and print; trial lots are welcome and repeat volumes run on scheduled programmes or annual rate contracts.

How fast do you quote?

Within 4 business hours of receiving dimensions, load and quantity.

What are typical lead times?

Sampling first in days; production scheduled to committed dispatch dates — surge months planned in advance against our 2,000 MT/month capacity, scaling to 8,000 MT/month from October 2026.

Do you offer sampling before production?

Yes — samples on request so the spec is proven before you commit.

Can we lock pricing with a rate contract?

Yes — annual rate contracts with agreed revision triggers are a standing model for repeat buyers.

Do you supply against purchase orders with credit terms?

Commercial terms are agreed per account after the first cycles; documentation supports standard B2B processes.

Is printing extra?

Up to 4-colour multicolour flexo is quoted within the box price based on coverage and colours — always proofed before production.

Ordering & design
How do I start an order?

Send product dimensions/weight, quantity and destination — or just the product sample. Engineers respond with a spec and quote in 4 business hours.

Can you design the box structure for us?

Yes — structure, ply, flute and internal fittings are engineered from your product and route; prototypes validate before tooling.

Can you match our existing box?

Yes — we reverse-engineer current packs and usually improve material efficiency in the process.

Do you print branding, barcodes and export marks?

Yes — up to 4-colour flexo with proofing; barcodes validated for scan contrast on kraft and white-top.

Can you make inserts and partitions to fit our product?

Die-cut inserts and dividers are engineered from samples or drawings and drop-tested until movement is eliminated.

What file formats do you need for artwork?

Print-ready vector files (AI/PDF) preferred; our prepress team adapts dielines to your artwork.

Do you handle both unit cartons and master shippers?

Yes — coordinated unit-to-master systems so retail packs and shippers fit each other and the pallet.

Can I visit the plant?

Yes — buyers are welcome at our Kosamba, Surat plant on NH-48; audits supported under ISO 9001:2015.

Delivery & service area
Where is Bhaavya Ecopack located?

Block No. 250, Near Shital Hotel, Village Sava, Kosamba, Dist. Surat – 394120, Gujarat — on the NH-48 corridor.

Which areas do you deliver to?

A committed 160 km scheduled-route radius around Surat — Hazira, Navsari, Bardoli, Bharuch, Ankleshwar, Valsad, Vapi, Daman, Silvassa, Vadodara — plus pan-India full-truck programmes (Morbi, Rajkot, Mundra, Delhi NCR, Pune, Bengaluru, Hyderabad, Chennai, Kolkata and more).

Is there a corrugated box manufacturer near me in Surat?

Yes — our plant is ~30 km from Surat city with same-belt scheduled routes; sampling and plant visits are easy.

Do you deliver to Ankleshwar and the chemical belt?

Daily-corridor coverage of Bharuch–Ankleshwar–Panoli–Jhagadia–Dahej with UN-adjacent spec support.

How do pan-India deliveries work?

As planned full-truck or consolidated programmes with agreed schedules and MOQs — engineered specs identical to our core belt.

Can you time despatches to vessel cut-offs?

Yes — export consignments are scheduled against Mundra, Hazira and Nhava Sheva sailings.

Sustainability
Are corrugated boxes eco-friendly?

Yes — recyclable, repulpable and biodegradable in weeks (vs centuries for plastic). Recycled-fibre board avoids ~180 kg CO₂ per tonne vs virgin (DEFRA factors).

How much does recycling actually save?

Per tonne of recycled paper: ~17 trees, ~26,500 litres of water and ~4,000 kWh of energy (US EPA equivalences — industry ballparks).

Do you use recycled fibre?

Recycled kraft is the backbone of Indian corrugated (recycled grades led the market in 2025); we match recycled/virgin content to your strength and compliance needs.

Is corrugated the answer to the plastic ban?

For secondary packaging, largely yes — India’s single-use-plastic phase-out and EPR rules are actively shifting demand to recyclable corrugated.

Are moisture coatings compatible with recycling?

Our water-based barrier coatings keep board repulpable — protection without the wax-dip landfill problem.

Where can I see your live impact numbers?

Our homepage shows a live counter of tonnes produced since 2021 with CO₂, tree, water and energy equivalences — sourced and caveated.

Ask our engineers directly

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