1. Capless Induction Sealing
New sealing technology providing performance improvements, significant cost &weight reduction opportunities and greater design flexibility

2. Benefits of Capless Induction Sealing
Provides greater control over sealing process
Allows immediate inspection of sealed container
Rubber insert in sealing head delivers better compliance with uneven sealing surfaces than is possible with a cap
Allows cooling of seal under pressure – better performance with hot-fill products
Reduces cap and liner cost
Use of new sealing technology provides opportunity for efficiency gains, cleaner production, improved visual appearance of product and enhanced consumer experience with easy to remove foil.

3. Conventional Conduction Sealing
Hot, stainless steel sealing head
Heat pattern on sealing head face
Pressure & heat
Heat conducted into foil cap
210°C
Product

4. Conventional Induction Sealing
Foil lined cap
Cap torque presses foil against neck of bottle
Foil heated through cap using electromagnetic waves
Heat-seal layer melts and bonds foil to bottle

5. Capless Induction Sealing
Ambient temperature sealing head
Pressure
Heat pattern on foil seal -
only sealing area of foil is heated
Heat insulation material
230°C
Heat induced into foil where required to form the seal
21°C
Product

6. Comparison Between Sealing Systems
Conventional Induction
Capless Induction
Components expensive due to requirements of cap lining process & foil retention in cap
Completely reliant on cap torque for sealing pressure (no control)
Quality assurance difficult to verify as cap covers foil
Restrictions on pack design due to cap/foil/thread fit
Can use low cost reel-fed material and light- weight cap
Sealing pressure mechanically applied so is reliable and measureable
Foil can be subject to inspection processes after application
With primary seal being formed by foil, significant flexibility over design of neck finish and closure is provided

7. Comparison Between Sealing Systems
Conventional Conduction
Capless Induction
Inefficient, most of the energy put into the head is lost into the atmosphere
Poor reliability with regular element & thermocouple failures due to high temperature levels within head whilst operating
Difficult to control with temperature time-lag
Workplace safety issues with hot surfaces
No conformity with hard & irregular surfaces (ie PET/Glass )
Lost production with warm-up & cool down
Highly efficient, only the foil seal is heated during the sealing process
Extremely reliable since system is solid state and sealing head remains at ambient temperature with no thermal stress
Precise digital control over energy input to head
Extremely safe as no hot surfaces present
Use of silicone rubber and other face materials to provide exact conformity with sealing surface
Instant start-up and shut down for optimum availability

8. The Benefits of Capless Induction Sealing
Increased Efficiency
Electromagnetic heating within foil, no heat lost into environment
Energy only used when machine sealing, zero consumption on standby
Total Control
Real time digital control over induction power level (temperature)
Exact control of induction cycle time
Precise control of pressure with rubber head insert for even conformity
Ability to maintain pressure on foil during ‘cooling’ phase
Measurement of induction power on each seal possible =100% QA validation
Improved Productivity
Significant reliability improvements as no heat is present in the components
Instant start-up & shut-down
Fast sealing cycle times
Clean sealing
Greater operator safety with cold sealing head

9. Examples of Capless Induction Sealing
Metal Plastic Glass
High Accuracy Non-Round Print Register