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Aerosol Overcaps 101. Why are caps important??. Dust Cover Prevents accidental discharge Aesthetics Load Factor Can deliver a message “Green” Factor. How are they made?.
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AerosolOvercaps101 Aerosol 101
Why are caps important?? • Dust Cover • Prevents accidental discharge • Aesthetics • Load Factor • Can deliver a message • “Green” Factor Aerosol 101
How are they made? • Caps are made via an injection molding machine – the machine is known as the “press” and the tool that makes the caps is the “mold”. Aerosol 101
Injection Molding Machine Aerosol 101
How does it work? Aerosol 101
Mold (Cavity) Aerosol 101
To layer pack or not to layer pack….. Aerosol 101
Material Properties Aerosol 101
Materials • Polyethylene (HDPE) • Polypropylene (PP) • Clarified Polypropylene (CPP) • Copolymers (Blended) • Styrolux/K-Resin • Non-Antistat Polypropylene (NAPP) Aerosol 101
Polypropylene • Lightweight • High compressive strength (top load) • Scuff Resistant • Retains stiffness and flex • Clearer than PE • Higher anti-stat levels Aerosol 101
Polyethylene • Softer material – more crack resistant • Does not hold it’s shape when bent • Cloudier • Faster cycle times • Scuffs easily Aerosol 101
Other materials • Clarified PP • Use when more clarity is needed • Styrolux • Best clarity, lowest shrinkage • Non-antistat PP • Use when painting, printing or metallizing caps Aerosol 101
Can Styles • Aluminum • Straight Walled • Necked In • DS Container • Sexton Can Aerosol 101
Aluminum Aerosol 101
DS Container Aerosol 101
Sexton Cans Aerosol 101
Cap Styles Aerosol 101
Styles • Generic designs are mass produced and lower priced. Provides a standard look. • Custom designs are developed with marketing for a distinctive look to complement the package and product. Aerosol 101
Straight Side/Necked In Aerosol 101
Straight Sided • 202 • 211 • 300 • High Stacker Caps • Double Shell • Tamper Resistant DS • Tamper Proof • Snap Lock • Rim Snaps Aerosol 101
Necked In • 112/45mm • 202/52mm • 205/57mm • 211/65mm • 300/70mm • Stacker Type • Double Shell • Single Shell • Tamper Resistant/Child Proof • Spray Thru Aerosol 101
Aluminum • 38mm • 45mm • 49mm • 50mm • 53mm • 59mm • 66mm • Caps to fit over valve cover • Double Shell Caps • Caps to fit over actuators Aerosol 101
Single Shell/Double Shell Aerosol 101
Why use a single shell cap? • Will fit a larger actuator – one that is larger than the valve cup • May use less plastic than a double shell Aerosol 101
…and WHY NOT? • Caps are more size critical with regard to fitment on the can – double shells lock onto the valve cup so are not as critical • Top load strength is diminished because caps rests on the shoulder radius • Do not mold as fast as double shells which will affect cycle time (cost) Aerosol 101
Functional Caps (or caps that work for a living) • Spray Thru • Child Resistant/Elderly Friendly • Tamper Resistant • Tamper Proof • Accessory Holder (Tube Clip) • Interactive Aerosol 101
Spray Thru Aerosol 101
Tamper Resistant Aerosol 101
Interactive Cap Aerosol 101
Tube Clip Aerosol 101
Value Added Printing Embossing Aerosol 101
More value added…. Metallized Cap Stickers/Labels Aerosol 101
Marketing Aerosol 101
Marketing Questions • What is your customer’s business - filler, manufacturer or end product user? • Does your customer have specific requirements for an overcap - tamper resistant, functional, spray through? • Convenience vs. cost – large cavitation vs. small, short leadtimes, uniqueness or inventory requirements Aerosol 101
More questions…. • What is your competitive edge – a unique feature, distinctive look, low cost? • What size do you need – can size, double or single shell? • Premium product or market driven? Aerosol 101
Resources • Caps • www.cobraplastics.com • www.berryplastics.com • www.estylecaps.com • www.dubuqueplastics.com • www.rackowpolymers.com • http://underwoodmold.com Aerosol 101
THE END Thank you! Please email any questions to: Faye Haber eStyle Caps & Closures faye@estylecaps.com Phone: 815.861.2967 Fax: 847.387.3911 Aerosol 101
AerosolOvercaps201 Aerosol 201
Importance of the CAP Dust Cover Protects Actuator Prevents Actuation During Shipping Communicates a ‘BRAND’ image Provides additional real estate for stickers and printing “Green Factor” Aerosol 201
Choosing a CAP Check First for Stock Caps at Suppliers Websites (see end of presentation for supplier websites)… Determine if you want your product to blend in with existing product or present a different look. Should you use a Round Cylinder Stock Cap or design a Custom Shape? Aerosol 201
Choosing a CAP (cont) • Do you want to compliment the shoulder radius on the can or hide it? • Is there a special function required? CR/EF, Spray, Tamper Resistant, Brush… • If the cap you seek is not available, work with your supplier to develop a cap that meets your needs… Aerosol 201
A Few Other Considerations to keep in mind when choosing CAP • Double Shell or Single Shell • Actuator Height • Special Actuator? • Cap to fit directly on Can or Actuator? • Do you want the cap to fit on a collar? Aerosol 201
Keep in Mind the CAP’s Impact On the Filler • Will it need to be Hand Capped (extra cost) or Automatic Capping • Orientability • Will Capper Need to Be Modified Aerosol 201
Commercializing a CAP Rapid Prototype (SLA or Polyjet) vs Molded Prototype SLA or 3D Printing provides a cap to be used for confirmation of aesthetics and some function Model can be painted but will not be exact color as molded part Cap Supplier or Outside Design Firm will design a 3D CAD Model to be used for commercializing your design Aerosol 201
More on SLA Models • SLA’s cost between $50 - $500 each depending on size and complexity so cost for line trials and sales samples are prohibitive • Models tend to be brittle and are easily broken • They will also warp if left in the heat (or during shipping) Aerosol 201
Commercializing a CAP Rapid Prototype vs Molded Prototype If larger numbers of caps are needed for line trials and sales samples, a single cavity prototype is advised Single cavity mold will cost between $3,000 (est) and $30,000 dependent upon complexity Aerosol 201
Commercializing a CAP • A prototype tool will provide a plastic cap that will be representative of final production • During this stage, any changes to surface finish or sizes can be made • Prototype can be used for sales samples and actual production • Should the cap design need modification, then it is best to find it before you build the production tool Aerosol 201
Commercializing a CAP • Color matches can be done in exact cap in preparation of the production mold • The prototype can be used for line trials and prequalification while the production tool is being built • Should the volume only warrant a single cavity – then the prototype can be used for production purposes Aerosol 101
Commercializing a CAP Production Molds Choosing mold cavitation is important to overall project cost The higher the cavitation, the more expensive the mold The higher the cavitation, the bigger the mold, and therefore it needs to run in a bigger injection molding machine which increases the machine hour rate Aerosol 201