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Guide No. 5
Revision I
Published on: 04/11/2019
Application of flat-top plastic screw-on threaded closures on PET bottles for beverages
Scope of application
This document gives background information and recommended best practices for the application of plastic flat top screw-on caps onto PET bottles for beverages.
It covers all closure sizes and beverage product types. It does not cover aspects related to filling or to downstream processing of products in PET bottles.
Table of contents
Contributors
Foreword
1. Presentation of the guide
1.1 Scope
1.2 Standard units
1.3 Checking of measuring equipment
2. Definitions
2.1 Closure
2.2 Package
3. Plastic flat-top screw capping on pet bottles
3.1 Introduction
3.1 Functions of the package
4. PET threaded neck finishes
4.1 Introduction
4.2 Functions
4.3 Dimensional checks
4.3.1 Preforms
4.3.2 Bottles - under support ledge geometry
4.4 Guidelines for handling
5. Flat top threaded plastic caps for beverages
5.1 Introduction
5.2 Functions
5.3 General characteristics
5.4 Ovality
6. Equipments and cap application settings
6.1 Cap feeder
6.2 Cap feeding system
6.3 Cap chute
6.4 Cap transfer system
6.4.1 Pick & place table system
6.4.2 Bottle “pick-off” system
6.5 Capping turret
6.5.1 Lower turret
6.5.2 Upper turret
6.6 Capping head
6.6.1 Permanent magnet capping head - Hysteresis capping head
6.6.2 Servo-driven capping head
6.7 Capping chuck
6.8 Bottle handling device
6.9 Bottle anti-rotation device
6.10 Additional functions
6.11 Closure application settings
6.11.1 Static application torque
6.11.2 Top load
6.11.3 Application angle (apa)
6.11.4 Removal torque at the output of the capping machine
7. Capping check during production
7.1 Introduction
7.2 Checks of the removal torque
7.2.1 Torque - General considerations
7.2.2 Torque measurements
7.3 Checking application angle
7.4 Check of the pressure retention performance
8. Problems and causes / corrective actions
9. Storage and transport of finished products
10. Related documents
10.1.1 Cetie
10.1.1 Other Industry References
11. Document history
Index of figures
History
First edition: 2008
Revision I: 11/2019
Contributors
ACTEGA DS GMBH, ALPLA KUNSTSTOFF GMBH, AMCOR FLEXIBLES CAPSULES FRANCE, APTAR FREYUNG GMBH, AROL S.P.A, BERICAP GMBH & CO. KG, BETAPACK, CDS SRL - VIROPLASTIC BEVERAGE, BRITVIC SOFT DRINKS LTD, COCA-COLA SERVICES S.A/N.V, CORVAGLIA MOULD AG, CSI - CLOSURE SYSTEMS INTERNATIONAL EUROPE, ETS ANDRE ZALKIN & CIE, HUSKY INJECTION MOLDING SYSTEM, INTRAVIS GMBH, LyondellBasell, NESTLE WATERS MANAGEMENT & TECHNOLOGIES S.A.S, NOVEMBAL S.A, OBRIST CLOSURES SWITZERLAND GMBH, PLASTIPAK BELGIUM BVBA, SOLOCAP-MAB S.A.S, SACMI IMOLA S.C., SAEME SAS DANONE EAUX FRANCE, SIDEL BLOWING & SERVICES, SIPA S.P.A., SPACS (FOR UNITED CAPS), UNITED CAPS FRANCE, UNITED CAPS WILTZ UNITED CAPS
Document under responsibility of working group:
PET plenary
WG chair: Alessandro FALZONI - SACMI IMOLA
This joint group is in charge of all GME data sheets ("Finish data sheets"), dedicated to the geometry of PET neck finishes and their related documents. These data sheets are related to finishes dedicated to the beverage industry (such as soft drinks, mineral water & wine), packaged in an aseptic environment and/or with nitrogen injection, and to the food industry (e.g. edible oils, vinegars, and sauces) and allowing to receive mainly plastic caps.