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RAJA Self-adhesive Mono Reinforced Paper Tape is a semi-crepe paper tape reinforced with monofilament fibreglass, for sealing heavy cartons over 30kg. Hot melt adhesive bonds on contact without water activation. Monofilament reinforcement runs lengthways down the backing, providing longitudinal tear resistance across the full seam length. Available in 48mm and 75mm — the only reinforced paper tape in the RAJA range offered in 75mm. Dispenser required. Not recyclable.
Semi crepe paper tape with monofilament fibreglass reinforcement. For cartons over 30kg where a quieter, smoother application than standard Kraft-backed tape is needed, or where 75mm seam coverage is required. Hot melt adhesive, 50m rolls, 76mm core.
Maximum application temperature is 25°C — the most restrictive in the paper tape range. Unlike the 57gsm and 70gsm natural rubber tapes rated to 60°C, or the 125gsm cross weave rated to 40°C, this tape's hot melt adhesive loses tack consistency as temperatures approach 25°C. Unventilated warehouses in summer, despatch areas near loading bay doors, and afternoon temperature peaks in poorly insulated buildings can all push board surface temperatures past the threshold even when ambient air reads within range. Fit a thermometer at bench height — board surface temperature and head-height air temperature are not the same reading.
Both 48mm and 75mm widths carry the same over 30kg weight rating. Width selection should be based on carton flap geometry. On cartons where the base flap spans more than 400mm, a 75mm run provides proportionally more seam coverage in a single pass. On standard cartons with narrower flap spans, 48mm is sufficient and delivers more linear metres per pack. Do not default to 75mm assuming wider means stronger — at equivalent construction, the weight capacity is identical.
Fibreglass reinforcement runs the full length of the tape backing. Attempting to hand-tear produces a diagonal split that frays along the filament lines, wasting tape and leaving an uneven seal edge on the carton. A pistol-grip dispenser maintains consistent tension across both the 48mm and 75mm widths and produces a clean cut on every seal. Confirm the dispenser core is 76mm compatible before switching rolls.
Semi-crepe backing contacts corrugated board across a slightly larger surface area on first lay than flat Kraft paper. Hot melt adhesive activates on that contact, but firm pressure across the full width in the first few seconds after laying takes the seal to full bond strength. On cartons over 30kg, run the heel of your hand or a sealing roller along the full run before moving the carton.
Shelf life is 6 months under correct storage conditions — 15-25°C, below 65% relative humidity, stored horizontally, away from direct sunlight. Hot melt adhesive is more temperature-sensitive in storage than natural rubber. Rolls stored near the upper temperature limit can show reduced initial tack and inconsistent bonding across the roll width before the shelf life date is reached. Date-stamp incoming stock and use oldest rolls first.
This tape suits a specific set of conditions — 75mm width requirement, quieter application, and consistent temperatures below 25°C. If your operation sits outside those parameters, one of the options below is a better fit.
Mono reinforced paper packing tape is a self-adhesive paper tape strengthened with monofilament fibreglass threads running lengthways down the backing. The fibreglass prevents the longitudinal splitting that unreinforced paper tape shows on cartons over 30kg. This product uses a semi-crepe paper backing rather than standard Kraft, which gives it a quieter, smoother application profile. Hot melt adhesive bonds on contact without water activation. A dispenser is required — monofilament reinforcement means it will not hand-tear cleanly.
Monofilament reinforcement runs in a single direction — lengthways down the tape. Cross weave reinforcement runs in two directions, along the length and across the width. On a carton seam under load, mono filament paper packing tape resists longitudinal splitting effectively but does not distribute lateral or torsional stress. Cross weave tape handles multi-directional stress better and suits rougher handling conditions. The other practical differences are: this tape is available in 75mm while the 125gsm cross weave is 48mm only, this tape has a semi-crepe backing for quieter application, and this tape has a lower maximum temperature — 25°C versus 40°C for the cross weave.
This tape uses a hot melt adhesive on a semi-crepe paper backing. The specific formulation has a lower thermal threshold than the artificial hot melt rubber used on the 125gsm cross weave reinforced tape. Above 25°C, tack consistency reduces and the bond may not hold at carton weights over 30kg. It is the most temperature-sensitive tape in the paper tape range. For environments that regularly reach or exceed 25°C, the 125gsm cross weave reinforced tape handles up to 40°C and is the more appropriate choice.
No. Monofilament fibreglass reinforcement cannot be separated from the semi-crepe paper backing at disposal and is not accepted in standard cardboard recycling streams. If recyclability is a requirement on heavy cartons, reinforced water-activated gummed paper tape is the correct alternative — it is fully recyclable with the box and provides a tamper-evident seal, but requires a WAT dispenser rather than self-adhesive application.
Monofilament fibreglass threads run the full length of the backing and are designed to resist tearing under load. That same property makes clean hand-tearing impossible — attempting it produces a ragged diagonal split along the filament lines. A 76mm pistol-grip or desktop dispenser produces a clean, consistent cut on every seal across both the 48mm and 75mm widths.
Both widths carry the same over 30kg weight rating — width is a seam coverage decision, not a strength decision. Use 75mm where carton base flaps are wide and a single-pass seal is preferred over double-taping. Use 48mm for standard carton formats where roll yield per pack is the priority. The 48mm option is supplied in packs of 36 rolls; the 75mm in packs of 24 rolls.
