Title: Capless Induction Sealing
1Capless Induction Sealing
- New sealing technology providing performance
improvements, significant cost weight reduction
opportunities and greater design flexibility
2Benefits 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.
3Conventional Conduction Sealing
Hot, stainless steel sealing head
Heat pattern on sealing head face
Pressure heat
Heat conducted into foil cap
210C
Product
4Conventional 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
5Capless Induction Sealing
Pressure
Ambient temperature sealing head
Heat pattern on foil seal - only sealing area of
foil is heated
Heat insulation material
230C
Heat induced into foil where required to form the
seal
21C
Product
6Comparison 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
7Comparison 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
8The 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
9Examples of Capless Induction Sealing
Metal Plastic Glass
High Accuracy Non-Round
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