Carton sealing
Replacement serrated knives for the tape-cutting position on carton sealing equipment.
Packaging Machine Replacement Knives
Packaging Machine Blades for Carton Sealing and Tape Cutting
Serrated replacement blades for carton sealers, semi-automatic taping machines and packaging equipment that cuts adhesive tape after sealing.
Serrated cutting edge10 mm and 15 mm reference widthsCustom length and mounting
The dimensions shown below are reference options from the supplied blade drawings. Final fit depends on the cutter holder, blade direction, tooth form, hole layout and the machine model.
Send Your Blade Details
What are packaging machine blades?
In this product family, the blade is the serrated cutting part used to separate adhesive tape after a carton or package has been sealed. It is a packaging-machine knife, not a plastic crusher knife or a general circular slitting knife.
Primary jobCut adhesive tape at the end of carton sealing
Blade formSerrated or toothed edge with mounting holes or slots
Reference groups10 mm and 15 mm width options
Order basisMachine model, old blade, drawing and sample
Applications for serrated packaging blades
Choose the blade by the machine’s cutting position and tape-cutting action. The same-looking tooth edge is not proof of interchangeability.
Case taping
Review the cutter holder, tape width and blade travel for case taping and box-closing machines.
Packaging lines
For packaging equipment where the blade is mounted as a fixed or moving tape-cutting component.
Custom packaging knives
For non-standard lengths, widths, hole patterns or edge forms, send the machine drawing or old blade.
Serrated blade forms and mounting references
The product images show the range of flat, slotted, hole-mounted and shaped serrated blade forms. They are visual references only; the measurable fitment data is written below in HTML.
Toothed tape-cutting edge
A serrated edge is used where the machine cuts adhesive tape. Tooth pitch and edge orientation must match the cutter position.
Holes, slots and shaped ends
Hole size, centre spacing, slot length and end shape are fitment dimensions, not decorative details.
Flat or formed sections
Some blades are straight strips while others have stepped, T-shaped or formed mounting sections. Confirm the old part before ordering.
Material and finish review
Finish, hardness and edge preparation should be selected for the tape, speed and expected cutting duty.
Reference dimensions and tooth parameters
All dimensions are in millimetres. The two reference groups below are kept separate because their widths and mounting-hole patterns are different.
| Reference group | Listed length | Listed hole-centre spacing | Width | Thickness | Tooth pitch | Mounting hole reference |
|---|---|---|---|---|---|---|
| 10 mm width group | 120, 125, 140, 145, 160, 175, 180, 195, 200 | 110, 115, 130, 135, 150, 165, 170, 185, 190 | 10 | 1.8 | 3 | 3 × 8 |
| 15 mm width group | 178, 185, 215, 235, 255, 285 | 163, 170, 200, 220, 240, 270 | 15 | 1.8 | 3 | 7 × 10 |
The listed lengths and hole-centre spacings are reference options shown in the supplied parameter drawings. They are not a universal length-to-spacing interchange table. Confirm the exact pairing, hole geometry, cutting direction and holder before production.
UnitMillimetres (mm)
Reference thickness1.8 mm in both shown groups
Reference tooth pitch3 mm in both shown groups
Custom scopeLength, width, hole form and thickness by drawing or sample
Visual reference
10 mm serrated blade reference
This drawing makes the main dimensions easier to review before sending a blade photo, drawing or sample for quotation.
- Listed length: 120 to 200 mm reference options
- Hole-centre spacing: 110 to 190 mm reference options
- Width / thickness: 10 mm / 1.8 mm
- Tooth pitch / mounting hole: 3 mm / 3 × 8
Use the drawing as a visual reference only. Confirm the exact length-to-spacing pairing, hole geometry, cutting direction and holder before production. Custom sizes can be reviewed from a drawing or sample.
Material options for the cutting duty
Material should be selected with the tape type, adhesive buildup, cutting frequency, edge condition and machine speed in mind. The exact grade is confirmed against the requested blade.
Steel options to review
Carbon steel, high-speed steel, tool steel, alloy steel and stainless steel are listed material directions for custom industrial knives.
Grade selection by application
Possible grades include 65Mn, 9CrSi, Cr12MoV, SKD-11, SKH-51, 3Cr13, 9Cr18, SUS440C, 420J2 and W6Mo5Cr4V2. Confirm the applicable grade before production.
Sharpness and tooth form
Confirm tooth pitch, tooth depth, edge direction, tooth termination and mounting orientation from the old knife or approved drawing.
The material list is an option set for industrial blade review, not a statement that every grade fits every packaging machine. The final material, heat treatment and edge finish should be recorded with the confirmed drawing or sample.
Confirm the machine before choosing a blade
A packaging machine blade should be matched by its working position and mounting geometry, not by the product name alone.
01
Machine information
Send the machine brand, model, serial or nameplate photo, and whether it is a semi-automatic or automatic carton sealer.
02
Blade position
Confirm whether the part is the tape-cutting knife, a fixed counter blade, a moving blade or a matched set.
03
Key dimensions
Measure length, width, thickness, tooth pitch, tooth depth, hole size, hole count and centre spacing.
04
Mounting direction
Show the cutting direction, edge orientation, slot direction, end shape and contact face in a photo or sketch.
05
Tape and duty
State tape material, tape width, adhesive type if known, daily cutting volume and any residue or contamination.
06
Order quantity
State the required quantity, whether a matched set is needed, destination and preferred delivery window.
From reference sample to replacement blade
A clear reference reduces the risk of ordering a blade that has the right length but the wrong mounting or cutting geometry.
Send the reference
Share the machine model, old blade, drawing or marked photos with the key dimensions.
Review the fit
Confirm blade role, hole pattern, tooth form, thickness, orientation and tape-cutting position.
Confirm the build
Record the material grade, edge finish, quantity, tolerances and any custom mounting details.
Approve the order
Use the approved drawing or sample reference for production, inspection, packing and dispatch.
Packaging machine blade FAQ
Common fitment questions before ordering serrated carton-sealer blades.
Are these blades for plastic crushers?
No. This page is for serrated packaging-machine blades used mainly to cut adhesive tape in carton sealing and case-taping equipment. Plastic crusher knives have different machine roles and mounting requirements.
Can I order by the length alone?
No. Length must be checked with width, thickness, tooth pitch, tooth depth, hole or slot geometry, centre spacing and cutter-holder orientation.
Are 10 mm and 15 mm widths interchangeable?
No. They are separate reference groups with different hole references and listed lengths. Confirm the original blade and holder before selecting a group.
What does 3 × 8 or 7 × 10 mean in the parameter table?
These are the mounting-hole references shown in the supplied parameter drawings. The exact hole form, size and layout should be verified from the drawing or old knife before production.
Can you make a non-standard serrated blade?
Custom length, width, thickness, tooth form and mounting details can be reviewed from a drawing, sample or clear marked photos. Final acceptance depends on complete fitment information.
Which material should I choose?
That depends on the tape, adhesive, cutting frequency, speed, edge requirement and machine environment. Share the cutting duty so the material and heat-treatment route can be reviewed together.
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Need a matched packaging-machine blade?
Please prepare the information you already have. The inquiry form is on our Connect Us page.
Helpful information to send
- Machine model or product type
- Key dimensions or mounting details
- Material or application and quantity
- Photo, drawing or old-part image if available