CMADC / THE WORKING LIBRARY

Field guides for
closure decisions.

Five complete guides, from the neck drawing to the opening measurement.

Bottle neck finishes

Bottle Neck Finish Compatibility: Drawings and Sample Checks

Compare the complete neck-finish designation and paired drawings, then check approved samples for seating, sealing and opening under the intended process.

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Capped bottle mounted in a four-post digital torque tester

Closure torque

Cap Torque Testing: Application, Removal and Test Conditions

Keep application torque and removal torque separate. Define the opening endpoint, fixture and sample history before comparing readings.

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Threaded plastic closures and glass bottle neck finishes prior to capper setup

Capping machinery

Capping Machine Selection: Caps, Neck Finishes and Closure Methods

Start with the closure action, then check the neck finish, gripping surfaces and complete package trial before comparing capping machine offers.

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GPI/SPI continuous thread closure and bottle neck finish cross-section showing T, E, I, S, H dimensions and 400, 410, 415, 425, and 430 thread series

Bottle neck finishes

Continuous Thread Closure Dimensions: GPI/SPI 400, 410, 415 & 425 Specs

Specify continuous thread closure (CT closure neck finish) geometry: GPI thread finish 400 410 415 425 430 turns, T/E/I/S/H tolerances, L vs M threads, and torque.

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Glass dropper bottle assembly with elastomeric bulb, threaded collar, and glass pipette

Bottle neck finishes

Glass Dropper Bottle Closure and Neck Finish Specs

Match a glass dropper bottle's full neck finish, distinguish pipettes from reducers and plain caps, and verify the sealing interface before approving an assembly.

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Example of an unbranded lotion pump fitted to a bottle on a bright workbench

Capping machinery

Lotion Pump Dispenser Capping and Dip-Tube Sizing

Fit a lotion pump dispenser to the actual bottle: verify the neck finish, trial the dip-tube cut, and check capping chuck contact before package approval.

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White polypropylene foam dispenser pumps with dip tubes on an inspection bench

Capping machinery

Mono-Material Foam Pumps: Closure-System Change Checks

Engineering qualification checklist for mono-material polypropylene foam pumps, covering ALPLA's 25 g metal-free foamer design, collar drive tooling, and package validation.

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4-roller ROPP capper sealing head cross-section showing Stage 1 top-load liner compression and redraw, Stage 2 thread rolling, and Stage 3 pilfer-proof tuck-under

Capping machinery

ROPP Capper Head Adjustment: Roll-On Pilfer-Proof Sealing Setup

Calibrate an ROPP capper 4-roller head on a roll on pilfer proof capping machine: top-load spring settings, thread and tuck roller forces, and aluminum ROPP cap sealing checks.

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Screw cap fit cover with thread, diameter and grip icons beside a rubber-lined capping chuck, white cap and bottle neck

Bottle neck finishes

Screw Cap Thread Fit & Capping Chuck Grip Diameter Selection

Match a screw cap to its bottle thread, measure the outside grip diameter, and choose capping chuck geometry and insert material for consistent tightening and release.

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Two clear bottles with plain white caps, one tamper band still up and one band dropped on the neck

Closure torque

Tamper-Evident Band: What to Measure at Application

Record pull-up, then removal torque, then band-break torque as separate peaks. Silgan TAB14 sets that order and a 10-minute wait on cold fill.

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Wine bottle necks comparing cylindrical cork bore seating with roll-on aluminium screw-cap finishes

Bottle neck finishes

Wine Bottle Closures and Bottling Equipment Compatibility

Compare wine closures by their sealing interface and application operation. Bottle finish, liner or stopper and tooling must be approved together.

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