The ecological alternative for heavier parcels
Strong paper tape is designed for general carton sealing when the standard 57gsm grade isn't enough. The 70gsm Kraft paper backing and natural rubber adhesive carry cartons up to 30kg, recycling with the sealed carton at kerbside. The tape can be torn by hand or used with a dispenser; bonds on contact from 10°C to 60°C without water activation. Available in brown, 48mm wide on 50m rolls on a 76mm core. Sold in packs of 36, priced per roll.
Where does this strong paper packing tape work best?
It sits between the standard 57gsm grade and the reinforced paper offering: heavier and more tear-resistant than the lighter option, without requiring a specialist dispenser or glass-fibre construction.
- Cartons weighing between 20kg and 30kg where the 57gsm standard grade is at its weight limit and a step up in paper thickness resolves the marginal sealing risk.
- E-commerce and fulfilment operations targeting kerbside recyclability where loads have grown beyond what the 57gsm grade safely handles.
- Warehouses that have standardised on paper backing for sustainability reasons and need a single width 48mm grade that covers a wider weight range.
- Manual packing environments where hand-tearability is required but a heavier gauge backing is needed to handle day-to-day carton loads without splitting.
Not for
- Cartons over 30kg: use a reinforced paper tape alternative for loads exceeding this.
- Below 10°C: natural rubber adhesive loses tack in cold conditions; not suitable for cold-store or refrigerated despatch environments.
- Tamper-evident sealing: pressure-sensitive paper tape doesn't leave a permanent mark on removal; use a water-activated alternative where a tamper-evident bond into the board fibres is required.
How to use
Natural rubber adhesive bonds immediately on contact, and the heavier 70gsm paper means the tape holds a clean line across wider flap gaps than the lighter 57gsm grade; the same application rules apply.
- Clean the surface: Wipe dust and moisture from the carton flap before applying; natural rubber adhesive loses hold on contaminated or damp board, which becomes significant under 30kg loads.
- Tear or cut to length: The 70gsm Kraft paper tears cleanly by hand at a sharp angle; for higher-volume lines a pistol grip dispenser with a 76mm core gives more consistent lengths and reduces hand fatigue.
- Apply at 10°C or above: Natural rubber maintains tack down to 10°C; in cool despatch areas confirm the carton surface temperature is within range before sealing, especially on 30kg loads.
- Press the full length firmly: Run a thumb or roller across the tape from end to end; partial contact at flap edges is the most common cause of seal failure on heavier cartons.
- Store correctly: Store at 15–25°C below 65% humidity; shelf life is 6 months from manufacture, so rotate stock on a first-in, first-out basis.
Specifications
- Backing: Kraft paper
- Adhesive: Natural rubber
- Paper thickness: 70gsm
- Width: 48mm
- Length per roll: 50m
- Core size: 76mm
- Min application temperature: 10°C
- Max application temperature: 60°C
- Weight capacity: <30kg
- UV resistance: No
- Shelf life: 6 months from manufacture
- Storage: 15–25°C, max 65% relative humidity
- Colour: Brown
- Tearability: Hand and dispenser
- Recyclability: 100% recyclable with corrugated carton in kerbside paper stream
Choose the right tape
This strong paper packing tape can be used on cartons weighing between 20kg and 30kg where the standard 57gsm isn't enough. Below 20kg the lighter grade is adequate; above 30kg a reinforced alternative is required.
- Choose this strong paper tape when sealing cartons up to 30kg and kerbside recyclability with a hand-tearable paper tape is required.
- Choose RAJA self-adhesive 57gsm paper tape when cartons are under 20kg and a lighter, lower-cost paper tape is sufficient.
- Choose RAJA polypropylene reinforced filament tape when loads exceed 30kg and glass-fibre tensile strength is needed, but recyclability isn't a priority.
- Choose water activated paper tape when tamper-evident sealing and a permanent fibre-bonding adhesive are both needed.
Frequently asked questions
What is the practical difference between 57gsm and 70gsm paper tape?
The thicker 70gsm paper has greater tear resistance and a higher weight capacity (under 30kg vs under 20kg), so it handles cartons that would cause the lighter grade to split under transit load; both grades can run off the same dispenser with the same width of 48mm available in 57gsm.
Is this strong adhesive paper tape recyclable with the carton?
Yes; the 70gsm Kraft paper backing and natural rubber adhesive are both paper-fibre compatible, so the sealed carton goes directly into the kerbside paper and cardboard stream without removing the tape.
Why does this tape have a 10°C minimum temperature?
This natural rubber adhesive holds tack at lower temperatures than hot melt adhesives, which is why it can operate at 10°C; it handles most ambient and cool warehouse environments but shouldn't be applied to carton surfaces below this or in unheated cold rooms.
When should I use reinforced paper tape instead?
When cartons exceed 30kg, or when the contents create internal pressure that pushes outward on the carton flap; at those loads the 70gsm paper backing can split along the seal without the glass-fibre reinforcement that the 170gsm reinforced grade carries.
Also useful
- Self-adhesive paper tape range: all paper grades from 57gsm through to 170gsm reinforced.
- Cardboard boxes: robust corrugated cardboard, available in all grades, providing reliable protection across a variety of goods.
- Paper void fill: paper-based inner protection that recycles alongside this tape and the carton.
