Difference between revisions of "CADPAK"
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== Resources and Citations == | == Resources and Citations == | ||
| − | * Accuspec Packaging [https://accuspecpackaging.com/roll-stock/military-spec-bags-foil-esd-vci/ | + | * Accuspec Packaging [https://accuspecpackaging.com/roll-stock/military-spec-bags-foil-esd-vci/ Datasheets] |
* Protective Packaging: [https://www.protectivepackaging.net/barrier-materials Datasheets] | * Protective Packaging: [https://www.protectivepackaging.net/barrier-materials Datasheets] | ||
* Cadillac Packaging: [https://www.cadprod.com/mil-spec-packaging Website] | * Cadillac Packaging: [https://www.cadprod.com/mil-spec-packaging Website] | ||
Revision as of 12:10, 19 January 2021
Contents
Description
[Cadillac Products Packaging Company] A registered trademark for a Barrier films made from Aluminum foil sandwiched between a biaxial nylon film and layers of heat sealable Polyethylene. Some types of CADPAK contain an additional layer of Heavy Duty green coex on one side. CADPAK films are strong, waterproof, vaporproof, greaseproof and flexible. Originally made for military applications, CADPAK films have found its way into museums and has been used to seal wooden packing crates, display cases, and storage shelves since 1980. It has also been used to create air-tight sealed enclosures for pest eradication.
Specific parameters for CADPAK products are:
| Product | Structure | Thickness (mil) | Puncture resistance (lbs) | Tensile Strength (lbs/in) | Oxygen transmission (ml/m²d) | Water Vapor Transmission (gms/m²d) | Datasheets | Comments |
|---|---|---|---|---|---|---|---|---|
| CADPAK CL | PCTFE | 4 | 21 | 28-37 | 1.6 | 0.046 | Link | Clear, similar to Aclar |
| CADPAK N | Nylon/PE/foil/PE | 4.2 | 17-20 | 19 | <0.005 | <0.005 | Link | Standard foil barrier material |
| CADPAK N-HD | Biax Nylon/PE/foil/PE | 5.9 | 20 | 20 | 0.008 | 0.008 | Link | Heavy duty; higher strength version of Cadpak N |
| CADPAK HD-100 | Biax Nylon/PE/Foil/PE/Heavy Duty Green Coex | 7.3-7.9 | 26 | 25 | 0.008 | 0.008 | Link | Heavy duty, high seal strength |
| CADPAK HD-200 | Biax Nylon/PE/Cross-lam PE/PE/Foil/PE/Heavy Duty Green Coex | 10.3 | 40 | 48 | 0.008 | 0.008 | Link | Heaviest duty, high puncture resistance |
| CADPAK T | Tyvek/PE/Foil/LLDPE | 9.1 | 17 | 5300 | 0.008 | 0.008 | Link | Similar to Marvelseal 585 |
| CADPAK S | Poly-cotton scrim/PE/Foil/PE | 13.3 | >22 | 53 | 0.008 | 0.008 | Link | Similar to Marvelseal 1311 |
Applications
- Lining shelves and shipping crates to minimize off-gassing of wood products
- Create anoxic pouches for pest eradication or long-term storage
- Sealed packages for exhibition and loan (esp for works on paper, paintings, lining inside of frames)
- Protective covers for cabinets and cultural heritage objects
Collection Risks
CADPAK N is fairly inert.
Links to Oddy Test results posted on AIC Wiki Materials Database Pages for individual materials below
- CADPAK HD100 (MMA): tested in 2018; temporary
- CADPAK HD200 (MMA): tested in 2018; temporary
Working Properties
- CADPAK HD100 is about twice as thick as Marvelseal and relatively more robust
- CADPAK HD200 white exterior turns clear with heat
- Products with Nylon exteriors are paintable when corona treated (treatment lasts only a few days)
- Adhesives will stick to Nylon and PET layers more readily than to PE
Forms and Sizes
- Cost increases with thickness
Resources and Citations
- Accuspec Packaging Datasheets
- Protective Packaging: Datasheets
- Cadillac Packaging: Website
- Materials Working Group: Submissions from January 2021.
