THREADED CLOSURE SYSTEMS

Cap Screwing Machines

Screw capping equipment for bottles and containers fitted with standard threaded caps, flip-top caps, spray caps, trigger pumps and lotion pumps. Choose from compact, semi-automatic and fully automatic systems for standalone use or line integration.

Adjustable Torque Stable Cap Tightening Custom Cap Feeding Production-Line Ready

SCREW CAPPING MACHINE GUIDE

Choosing the Right Cap Screwing Machine

A cap screwing machine tightens pre-threaded plastic or metal closures onto bottles and containers with controlled pressure and torque. It can be configured for standard screw caps, flip-top caps, spray caps, trigger pumps, lotion pumps and other compatible threaded closures.

Machine selection should be based on the cap structure, container stability, required output and cap-feeding method—not cap diameter alone. ZONESUN supplies compact, semi-automatic and fully automatic systems for standalone operation and complete packaging-line integration.

Information Needed for Selection

01 Cap photos, diameter, height and thread structure
02 Bottle dimensions, material and neck specifications
03 Required production speed in bottles per minute
04 Manual cap placement or automatic cap feeding

MACHINE CONFIGURATIONS

Cap Screwing Machines by Automation Level

Choose a configuration that matches your production volume, container format and preferred level of operator involvement.

01

Manual Capping Tools

Suitable for laboratories, product trials and very low-volume production where each closure is positioned and tightened by an operator.

02

Semi-Automatic Cappers

The operator places the bottle or cap while the machine completes tightening with more consistent torque and closure quality.

03

Automatic Inline Cappers

Designed for continuous bottle conveying, positioning and capping. Suitable for connection with filling, sealing and labeling equipment.

04

Automatic Cap-Feeding Systems

Combines cap sorting, feeding, placement and tightening to reduce manual handling in medium- and high-output packaging lines.

SELECTION FACTORS

What Determines the Machine Configuration?

Cap & Container

Cap diameter, height, thread design, bottle shape and container stability determine the capping head and bottle-positioning structure.

Torque & Closure Quality

Adjustable torque helps prevent loose closures, cap damage, thread stripping, product leakage and inconsistent finished packaging.

Output & Cap Feeding

Production speed and available labor determine whether manual cap placement, a vibratory feeder or a cap elevator is more suitable.

COMMON APPLICATIONS

Suitable Packaging Applications

Screw capping systems are widely used with bottles and containers for food, beverage, cosmetics, pharmaceutical, household chemical and industrial products.

Sauces & Condiments
Juice & Beverages
Cosmetics & Skincare
Shampoo & Body Wash
Pharmaceutical Liquids
Household Chemicals
Lubricants & Oils
Spray & Pump Bottles

FREQUENTLY ASKED QUESTIONS

Cap Screwing Machine FAQs

Can one machine handle different bottle and cap sizes?

Some machines can handle multiple sizes through mechanical adjustment or interchangeable capping heads and positioning parts. The available range depends on the differences between your containers and caps.

What is the difference between screw capping and ROPP capping?

Screw capping tightens a pre-threaded closure onto a matching bottle neck. ROPP capping forms threads and a tamper-evident band on an aluminum closure during capping.

Can trigger pumps and lotion pumps be capped automatically?

Yes, but long dip tubes and irregular pump shapes usually require specialized cap feeding, bottle positioning or manual placement before automatic tightening.

Can the capper connect with a complete bottling line?

Yes. Automatic cappers can connect with bottle unscramblers, filling machines, induction sealers, labelers and collection conveyors. Conveyor dimensions and control signals should be confirmed during planning.

Why are bottle and cap samples recommended?

Samples allow the capping head, torque, cap feeding, bottle stability and finished closure quality to be tested before the final machine configuration is confirmed.

Is an automatic cap feeder always necessary?

No. Manual cap placement can be economical for small production batches. Automatic feeding is more suitable when higher output and reduced operator involvement are required.

Prepare Your Bottle and Cap Details

Accurate samples and production requirements help determine the suitable capping head, feeder and automation level.

Bottle Photos Cap Dimensions Required Output Line Layout