Bottles Mouth Inspection Machine Protects High Speed PET Lines
In high-speed PET and PE bottle production, the bottle finish is a small area with a large impact. A chip, through-hole, deformation, or sealing-surface defect may not look serious at first, but it can affect capping performance and increase the risk of leakage after filling. For production lines running at 48,000 bottles per hour, manual checking is not a practical way to control this risk. An inline Bottles Mouth Inspection Machine gives manufacturers a more consistent method for identifying defective bottle finishes before they move further downstream.
Why Bottle Finish Inspection Belongs Before Filling
The sealing surface is one of the most important quality points on a PET or PE bottle. If the finish is damaged, the bottle may fail during capping, sealing, or later handling. Placing a Bottle Finish Inspection Machine near the early production stage helps remove unqualified bottles before filling, labeling, or packaging resources are spent on them.
This is especially important for high-speed lines, where small defects can multiply quickly. Instead of relying on delayed sampling or visual checks, inline inspection supports continuous quality control and automatic rejection during normal production flow.
Bottles Mouth Inspection Machine Equipment Overview
Bottles Mouth Inspection Machine is a non-contact online inspection system designed for PET and PE bottle finishes. It is suitable for a 48,000 bottles/hour PET/PE bottle packaging line and can be installed within the blow molding machine at the bottle discharge section or along the conveyor chain.
| Item | Specification |
|---|---|
| Equipment name | Bottle Finish Inspection Machine |
| Model | Bottles Mouth Inspection Machine |
| Quantity | 1 set |
| Rated capacity | 48,000 bottles/hour |
| Applicable containers | PET / PE bottles |
| Installation position | Inside the blow molding machine at discharge point or on the conveyor chain |
| Main function | Detects and rejects PET/PE bottles with deformation or defects on the top sealing surface |
As a Bottles Mouth Inspection Machine, the MT-PK021 focuses on the finish area rather than general bottle appearance. This makes it a targeted inspection station for manufacturers that need stable sealing performance on fast PET and PE lines.
How the Inspection Process Works
The MT-PK021 uses machine vision inspection technology. When a bottle passes the positioning sensor, the control unit records the bottle ID and encoder value. The sensor then triggers the camera to capture an image of the bottle mouth. After acquisition, the image processor analyzes the image and sends results to the HMI for real-time display while preparing rejection instructions for unqualified bottles.
If a defect signal is generated, the control unit activates the rejector and removes the bottle associated with the recorded ID. This sequence allows the system to inspect continuously without stopping the production line.
The image acquisition module includes an LED area light source with a service life of up to 30,000 hours. With front illumination, the bottle mouth appears as a continuous bright ring in the captured image. The system uses a fixed-focus lens with manual aperture adjustment and an area-array CCD analog camera with 640 × 480 pixel resolution and image acquisition speed up to 60 frames per second.
Defects the System Detects
The Bottles Mouth Inspection Machine Bottle Finish Inspection Machine is designed to detect defects that can directly affect the sealing surface and bottle neck quality. Its inspection scope includes:
The inspection standards include defects with a vertical section width of 0.8 mm and depth of 0.25 mm for penetration, internal defects, and external defects. Point defects are specified at 0.8 mm diameter and 0.25 mm depth, while oval neck deformation is measured by a 2 mm diameter difference.
| Inspection content | Detection accuracy | False rejection rate |
|---|---|---|
| Penetration | ≥99.99% | ≤0.03% |
| Internal defects | ≥99.95% | ≤0.03% |
| External defects | ≥99.95% | ≤0.03% |
| Point defects | ≥99.99% | ≤0.03% |
| Neck deformation | ≥99.95% | ≤0.03% |
Operating Conditions for Stable Integration
For stable operation, the Bottles Mouth Inspection Machine is designed for industrial production environments within defined conditions. The recommended operating altitude is 5–3000 meters above sea level, with ambient temperature from 5°C to 40°C and relative humidity of 50%–65% RH. Workshop floor levelness, load-bearing capacity, and storage conditions should meet applicable national standards to support installation, commissioning, and long-term operation.
Key operating requirements include:
These requirements make the equipment suitable for integration into high-speed PET/PE bottle production lines where inspection speed, rejection timing, and continuous operation must work together.
Practical Value for PET and PE Bottle Lines
A Bottles Mouth Inspection Machine is most valuable when it is placed early enough to prevent downstream waste. By detecting finish defects before filling, the Bottles Mouth Inspection Machine helps production teams focus inspection on the area most closely tied to sealing performance. Its non-contact design also avoids physical interference with bottle movement during inspection.
For plants operating at 48,000 BPH, the key benefit is not only speed. It is the ability to combine positioning, imaging, real-time processing, HMI display, and automatic rejection into one inline workflow. That makes the Bottles Mouth Inspection Machine a practical option for PET and PE bottle manufacturers looking to strengthen finish defect control without slowing the line.
FAQs
What is the Bottles Mouth Inspection Machine used for?
The Bottles Mouth Inspection Machine is used for online, non-contact inspection of PET and PE bottle finishes. It detects deformation and damage on the top sealing surface and rejects unqualified bottles.
What production speed does the machine support?
The rated capacity is 48,000 bottles per hour, matching a 48,000 bottles/hour PET/PE bottle packaging line.
Where can the machine be installed?
It can be installed inside the blow molding machine at the bottle discharge point or along the conveyor chain.
What defects can the system detect?
The system detects through-holes, internal chipping, external chipping, localized point defects, and bottle neck deformation or ovality.
Is the inspection contact-based?
No. The system uses non-contact machine vision inspection, with sensors, lighting, a CCD camera, image processing, HMI display, and automatic rejection.
