Automatic Ropp Screw Threading Machine

Description

Automatic ROPP Screw Threading Machine, also known as a Roll-On Pilfer-Proof (ROPP) capping machine, is a specialized piece of equipment designed to apply and seal aluminum ROPP caps onto bottles, ensuring a secure, tamper-evident closure. These machines are widely used in industries such as pharmaceuticals, beverages, food, cosmetics, and chemicals for capping glass, PET, or other rigid bottles. ROPP capping machines are engineered to automate the process of placing and forming unthreaded aluminum caps (ROPP caps) onto bottles with pre-threaded necks. Unlike traditional screw capping machines that tighten pre-threaded caps, ROPP machines shape the cap’s threads by pressing and rolling the aluminum shell to conform to the bottle’s existing threads, simultaneously creating a tamper-evident seal. This ensures product integrity, prevents leakage, and provides visible evidence of tampering, making it ideal for products like wine, spirits, olive oil, pharmaceuticals, and more.

The Automatic ROPP Screw Threading Machine is a highly efficient, reliable, and versatile solution for sealing bottles with tamper-evident aluminum caps. Its ability to form threads during the capping process, combined with automation features like cap feeders and conveyor systems, makes it indispensable for high-volume production lines in multiple industries. While it requires rigid bottle materials and may involve additional costs for varied cap sizes, its benefits in security, speed, and integration make it a preferred choice for manufacturers prioritizing product integrity and efficiency.

Bottle Feeding: Pre-filled bottles are fed onto the conveyor belt, either manually or from an upstream filling machine. The infeed worm and star wheel align and space the bottles correctly.

Cap Placement: The cap feeder sorts and delivers unthreaded aluminum ROPP caps to the delivery chute. The bottle picks up a cap as it moves under the capping head, or the head places the cap onto the bottle neck.

Threading and Sealing: The capping head descends, and its rollers press the aluminum cap against the bottle neck. The rollers simultaneously:
- Form threads by rolling the cap to match the bottle’s pre-threaded neck.
- Create a tamper-evident seal by crimping a perforated portion of the cap.
- Ensure an airtight closure to prevent leakage or contamination.

Bottle Release: After sealing, the capping head lifts, and the star wheel transfers the capped bottle to the exit conveyor for further processing.

If you need details on specific models, pricing, or comparisons with multi-head machines, let me know!

Salient Features of Automatic Ropp Screw Threading Machine

Compact GMP model.
Quick and very easy change over and setting from one size of Container to another by a Single Ratchet.
Parts coming in contact with the Container or the Aluminum cap or exposed to atmosphere are made out of stainless steel for long life.
Single motor synchronizes Conveyor, star wheel and Platform Turret and speed can be varied by VFD.
IQ/OQ documentation can be provided.
Machine construction in Stainless Steel Finish
Cap Feeder with Variable Speed System for feeding control of caps. (optional)
Digital counter for counting production output.

“No Bottle – No Cap” system.
“Container Overturn – Machine Stop” mechanism.
Hopper can be completely dismantling for easy cleaning
Various safety features including Clutch system to avoid Bottle Breakage or Jamming
Star Wheel is equipped with safety clutch for automatic stoppage of machine in case of jamming or overloading.
PLC system with Graphical User Interface can be offered.
Inbuilt Laminar Air Flow can be offered for sterile class 100 filling.
Sampling and Rejection system can be provided on demand.

Working Principle of Automatic Ropp Screw Threading Machine

The filled bottles moving on conveyor belt and fed into an in feed star wheel by in-feed worm. While moving in feed star wheel, bottles pick up caps one by one from delivery chute. The descending rotary sealing heads hold bottle’s neck with desired pressure. The sealing is done in a programmed roll-on manner, accurate positioned of the caps is done mechanically by means of a rotating unscramble, to direct the caps correctly into the chute, when the chute is filled up the rotating unscramble drive is disengaged, hence, there is no chance to damage of caps. The sealing roller takes place due to rotating sealing head and transfer movement of sealing & threading rollers due to sealing cam. The sealed bottles are discharged by exist star wheel on conveyors.

Technical Specification of Automatic Ropp Screw Threading Machine

Model	ACSR-60	ACSR-120	ACSR-200
No. of Capping Heads	Single	Four	Eight
Production Rate	Up to 50 Containers/Minute	Up to 80 Containers/Minute	Up to 180 Containers/Minute
Container Diameter:	24mm to 90mm	24mm to 90mm	24mm to 90mm
Container Height:	50mm to 250mm	50mm to 250mm	50mm to 250mm
Cap Diameter:	20mm, 25mm & 28mm with the help of change parts	20mm, 25mm & 28mm with the help of change parts	20mm, 25mm & 28mm with the help of change parts
Power Specification:	1 H.P.	1 H.P.	2 H.P.
Electrical characteristics	440 Volts, 3 Phase, 50 Hertz, 4 Wire System	440 Volts, 3 Phase, 50 Hertz, 4 Wire System	440 Volts, 3 Phase, 50 Hertz, 4 Wire System
Conveyor Height	800mm to 900mm adjustable	800mm to 900mm adjustable	800mm to 900mm adjustable
Optional Accessories	Safety Cabinet Covering Machine	Safety Cabinet Covering Machine	Safety Cabinet Covering Machine
–	PLC with HMI	PLC with HMI	PLC with HMI
Overall Dimension	1500mm (L) X 850mm (W) X 1800mm (H) approx.	1675 (L) x 1000mm (W) x 1800mm (H) approx.	2000 (L) x 1000mm (W) x 1800mm (H) approx.

* Power voltage can be adjusted as per customer’s domestic power voltage requirements.
* Rights of technical improvements & modification reserved.
* Illustrations & dimensions are shown for information purpose only.

Types of Capping and Sealing Machine

Automatic Ropp Screw Capping Machine

Automatic Bottle Screw Capping Machine

Automatic Bottle CRC Capping Machine

Automatic Bottle Lug Capping Machine

Automatic Vial Capping Machine

Automatic Jar Capping Machine

Automatic Linear Bottle Capping Machine

High Speed Vial Cap Sealing Machine

High Speed Bottle Capping Machine

Semi Automatic Bottle Capping Machine

Applications of Capping and Sealing Machine

Advantages of Automatic Ropp Screw Threading Machine

Secure and Tamper-Evident: Provides robust, airtight seals with visible tamper evidence, enhancing consumer trust.

High Efficiency: Automated systems reduce labor and increase production speed, ideal for high-volume lines.

Durability: Stainless steel construction ensures longevity and compliance with hygiene standards.

Flexibility: Adjustable components accommodate various bottle and cap sizes, reducing the need for multiple machines.

Key Features of Automatic Ropp Screw Threading Machine

Tamper-Evident Sealing: The ROPP process creates a perforated band that breaks upon opening, providing visible evidence of tampering, crucial for consumer safety in pharmaceuticals and beverages.

Versatility: Can handle various bottle shapes and materials with interchangeable parts for different cap and bottle sizes.

High-Speed Automation: Automatic models, such as single-head or multi-head, achieve production rates from 50 to 300 bottles per minute, depending on the model.

No Bottle, No Cap Mechanism: Prevents cap wastage and ensures the machine stops if no bottle is present, reducing damage and improving efficiency.

Adjustable Sealing Pressure: Spring-loaded rollers accommodate variations in bottle neck dimensions and cap gauges, preventing damage to caps or bottles.

Integration Capability: Designed to synchronize with filling, labeling, and other packaging line equipment for seamless operation.

Safety Features: Includes clutches, microswitches, and “no cap, no roll” systems to prevent jams, overloading, or cap damage.

FAQ for Automatic Ropp Screw Threading Machine

What is an Automatic ROPP Screw Threading Machine?

An Automatic ROPP Screw Threading Machine, also known as a Roll-On Pilfer-Proof (ROPP) capping machine, is a high-speed packaging equipment that automatically places and seals aluminum ROPP caps on bottles. It forms threads on the unthreaded aluminum cap by rolling it onto the pre-threaded neck of the bottle, creating a secure, tamper-evident, and leak-proof seal.

How does the Automatic ROPP Screw Threading Machine work?

The machine works in a continuous automated process:

Bottles move on the conveyor and are positioned by the infeed star wheel.
Aluminum ROPP caps are automatically fed and placed on the bottle neck.
The capping heads descend, and special rollers apply pressure while rotating to form threads on the cap according to the bottle neck.
The pilfer-proof band is crimped to create a tamper-evident seal.
Capped bottles are then discharged. Features like “No Bottle – No Cap” ensure smooth operation.

What is the production capacity of the Automatic ROPP Screw Threading Machine?

We offer different models with varying capacities:

ACSR-60 (Single Head): Up to 50 bottles per minute
ACSR-120 (Four Head): Up to 80 bottles per minute
ACSR-200 (Eight Head): Up to 180 bottles per minute

The actual output depends on bottle size, cap type, and product characteristics.

What are the key features of your Automatic ROPP Screw Threading Machine?

Key features include:

Compact GMP model with stainless steel construction
Quick and easy changeover with single ratchet system
“No Bottle – No Cap” and “Container Overturn – Machine Stop” safety systems
Variable speed control via VFD
Digital production counter
Safety clutches to prevent bottle breakage
Optional PLC with HMI, laminar airflow, and cap feeder with variable speed

What makes your ROPP Screw Threading Machine GMP compliant and safe?

The machine is designed as a compact GMP model with stainless steel contact parts. It includes multiple safety features such as safety clutches on the star wheel, overload protection, and optional laminar airflow for sterile environments. IQ/OQ documentation is available, and all exposed parts ensure hygiene and durability.

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