Bottle Neck Cutting Machine
Bottle Finishing · LONGSN bottle packaging machinery
Neck cutting and trimming machines for extrusion blow moulded PE, HDPE and PP bottles and jerry cans — the moulded dome above the neck is cut away to leave a smooth, burr-free mouth.
About This Category
What Bottle Neck Cutting Machines Do
Extrusion blow moulded containers leave the mould with a closed dome or flash above the neck ring. LONGSN neck cutting machines locate the bottle, cut the dome off in one pass and remove the burr, so the mouth is ready for capping. Servo rotary models such as the LSN-CTL1 run at 20 to 30 bottles per minute with soft cutting for smooth edges; several models combine neck cutting and leak testing in a single frame.
The machines can be connected to an existing blow moulding line by conveyor or run as stand-alone units, and are used for plastic bottles, cans, cups, medicine and daily-chemical containers in PP, PE, PVC, PET and PC.
- Machines on this site
- 6 models
- Line stage
- Bottle Finishing
- Category no.
- 01
Models
Bottle Neck Cutting Machine Models
All bottle neck cutting machines listed by LONGSN. Open a machine for its specifications, photos and full description.
6 machines
Bottle Neck Cutting & Leak Testing Machine
ModelLSN-CL2Speed10-30pcs/minThis bottle neck mouth cutting leak testing machine is used to cut off the edge on plastic bottle neck then…View machine
Plastic Bottle Cutting Machine (PET, PE, PP)
ModelLSN-C2Speed10-30pcs/min or CustomizedThis bottle neck cutting machine can be used for plastic cans, wine cups…View machine
Jerry Can & Container Neck Cutting Machine
ModelLSN-C4LONGSN Factory automatic bottle cutting style is updating solution for this plastic bottle/containers…View machine
Oil Bottle & Jerry Can Neck Trimming Machine
ModelLSN-C1MaterialSUS304This bottle neck cutting machine can be used for plastic cans, wine cups…View machine
Servo Rotary Bottle Neck Trimming Machine
ModelLSN-CTL1Output (PPM)20-30PPMHigh Speed Integrated Function Rotary Design Aseptic Cutting Simple Operation Low MaintenanceView machine
Rotary Neck Trimming & Leak Testing Machine
ModelLSN-TL1Speed1000-1400pcs/hThis rotary type plastic bottle neck/mouth trimming leak testing machine is used to do the bottle neck…View machine
Why This Cut Matters
The Cut Face Is the Sealing Face
Neck cutting looks like a trimming job. It is actually the moment the sealing surface of the finished product is made.
Where the trim comes from on a blown container
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Blown with a closed mouth
An extrusion blow moulded bottle or jerry can cannot be blown with its mouth open. The mould closes above the neck ring, so every PE, HDPE and PP container leaves the blow moulder with a closed dome of process material standing where the opening should be.
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Held by the neck ring
The neck cutting machine locates each container by its neck ring.
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Cut in one pass
The cutter takes the dome off in one pass and removes the burr, leaving an even, open mouth.
Four Cuts Compared: One Pass, Three Rejects
| Cut | What the rim looks like | What happens under the cap | Verdict |
|---|---|---|---|
| Clean square cut | The rim face is flat and parallel to the neck ring. | The liner seats flush and the seal holds for the shelf life. | Pass |
| Burr on the rim | A raised burr props the liner off the face. | Product seeps past the high point, which is the classic leak complaint. | Reject |
| Angled cut | The face is out of parallel with the neck ring. | Cap torque lands on one side, so the seal is tight there, weak opposite and leaking at random. | Reject |
| Torn, serrated edge | A ragged, torn rim. | It sheds plastic dust into an empty bottle that is about to be filled, and no cap can fix that contamination. | Reject |
Cutting speed and bottle size are set on the customer's own container. To keep the cut clean shift after shift, read Maintenance & Troubleshooting for Your Bottle Neck Cutting Machine.
Compare
Bottle Neck Cutting Machine Models at a Glance
Output and bottle range of each neck cutting machine. Open a machine for its full specifications.
| Machine | Model | Output | Range | View |
|---|---|---|---|---|
| Bottle Neck Cutting and Leak Testing Machine | LSN-CL2 | 10 to 30 pcs/min | 1 ml to 30 L | |
| Plastic Bottle Cutting Machine | LSN-C2 | 10 to 30 pcs/min, or customized | 1 ml to 30 L | |
| Rotary Bottle Neck Trimming Machine | LSN-CTL1 | 20 to 30 pcs/min | PE and HDPE bottles | |
| Jerry Can Neck Cutting Machine | LSN-C4 | Up to 30 pcs/min | Diameter and height custom-made | |
| Oil Bottle Neck Trimming Machine | LSN-C1 | Up to 30 pcs/min | Diameter and height custom-made | |
| Neck Trimming and Leak Testing Machine | LSN-TL1 | 1,000 to 1,400 pcs/h | 10 ml to 50 L, or customized |
On the Line
Where Neck Cutting Sits on the Bottle Line
LONGSN machine categories in production order behind the blow moulder, from bottle finishing to end-of-line packing and conveying. The highlighted stage is this category.
Bottle Finishing
2 categories · 8 machines- Bottle Neck Cutting Machine
- Bottle Handle Applicator
Inspection
2 categories · 9 machinesClosure Line
4 categories · 10 machinesEnd-of-Line Packing
1 category · 3 machinesConveying
1 category
Before You Order
Bottle Neck Cutting Machine FAQ
What buyers ask about our bottle neck cutting machines. Warranty and delivery terms are on the FAQ page.
What is a bottle neck cutting machine?
A bottle neck cutting machine cuts the closed dome or flash above the neck ring of an extrusion blow moulded bottle or jerry can. The mouth is then smooth and ready for a cap. LONGSN machines run in line after the blow moulder.
How does a bottle neck cutting machine work?
The machine locates the bottle, cuts the dome off in one pass and removes the burr. It can take bottles from the blow moulder by conveyor or run on its own. The servo rotary LSN-CTL1 cuts 20 to 30 bottles per minute.
Why do HDPE and PP blow moulded bottles need neck cutting?
Extrusion blow moulded PE, HDPE and PP bottles leave the mould with a process dome that closes the mouth. That dome is cut away at the neck ring so the cut face can seal under the cap.
What bottles can a LONGSN neck cutting machine handle?
PE, HDPE and PP bottles and jerry cans from 1 ml to 50 L, depending on the model. The same machines are also used on PVC, PET and PC bottles, cans, cups and daily-chemical containers.
Can a bottle neck cutting machine also leak test?
Yes. LSN-CL2 and LSN-TL1 cut or trim the neck and then leak test each bottle in the same frame. Bottles that fail the test are rejected.
Tell us your bottle, cap and target output
Our engineers recommend the right bottle neck cutting machine configuration for your line. E-mail info@longsn-machine.com or call / WhatsApp +86-15995983945.