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Caverna™ PP

Ref.: INFINITE-CAVERNA-PP-175-500

110.00 €

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Approximate delivery date: Wednesday 16 October

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Infinite Material Solutions is an American company specialising in the development of innovative materials for FFF 3D printing. Unlike other manufacturers, Infinite Material Solutions only includes in its catalogue materials that are unique in the market and that provide added value over other available alternatives.

With this philosophy, they have developed the Caverna™ PP filament, a polypropylene filament that has a water-soluble compound that dissolves to create a co-continuous microporous morphology. After dissolution, the resulting material is soft and porous, and provides incredible moisture vapour transmission.

Video 1: A presentation of the Caverna PP filament. Source: Infinite Material Solutions.

Caverna™ PP is an innovative filament that opens up new options for users who want to create lightweight foam-effect parts that resemble a sponge. Caverna™ PP works in a very simple way. Parts made from this material can be immersed in hot water, dissolving part of the piece and creating a microporous morphology.

The porous structure of Caverna PP

Image 1: The porous structure of Caverna PP. Source: Infinite Material Solutions.

As well as enabling the 3D printing of lightweight, foam-like thermoplastic parts, Caverna™ PP can be combined with standard polypropylene filament to produce parts with rigid and soft zones, or with Aquasys 120 soluble support filament to produce complex parts

Parts 3D printed with Caverna PP filament

Image 2: Parts 3D printed with Caverna PP filament. Source: Infinite Material Solutions.

Thus, some of the most relevant characteristics of the Caverna™ PP filament are:

Unique water-soluble composition: When placed in tap water, the water-soluble phase of Caverna™ PP is water-soluble.
Excellent consistency: The pore size of Caverna™ PP is very uniform (1-4µ) and its distribution provides excellent print fidelity.
Soft to the touch: After dissolution, Caverna™ PP loses 45% of its mass, leaving behind a light, soft and flexible material.
Compatibility: Caverna™ PP is compatible with other standard polypropylene filaments as well as Aquasys 120 soluble support filament, also soluble in hot water.

By offering the ability to create parts with an ultra-fine, highly controlled network of tiny pores, Caverna™ PP makes possible new applications, some obvious and some yet to be discovered. Some possible applications include the following:

Air and water filters.
3D printed fabric scaffolds.
High performance chromatographic filters.
Porous tools for thermoforming.
Breathable 3D printed clothing.
Footwear design and prototyping.

The Caverna™ PP filament is undoubtedly an innovative technical material that offers new manufacturing possibilities and enables new applications for FDM 3D printing in various industries.

General information
Material	PP
Format	500 g
Density	(ASTM D792) 1.12 g/cm³
Filament diameter	1.75 / 2.85 mm
Filament tolerance	±0.05 mm mm
Filament length	(Ø 1.75 mm-0.5 Kg) ±185.6 m / (Ø 2.85 mm-0.5 Kg) ±70 m

Printing properties
Printing temperature	190 - 240 ºC
Print bed temperature	95 - 125 ºC
Chamber temperature	20 - 50 ºC
Cooling fan	-
Recommended printing speed	- mm/s

Mechanical properties
Elongation at break	(ASTM D638) 1.6 %
Tensile strength	(ASTM D638) 26 MPa
Tensile modulus	(ASTM D638) 2576 MPa
Flexural strength	(ASTM D790) 46 MPa
Flexural modulus	(ASTM D790) 2095 MPa
Surface hardness	Shore 74 D
Impact strength	12.1 KJ/m²

Thermal properties
Melting temperature	220 ºC
Softening temperature	- ºC

Specific properties
Transparency	-
Chemical resistance	✓

Other
HS Code	3916.9
Spool diameter (outer)	200 mm
Spool diameter (inner hole)	53 mm
Spool width	70 mm

The Caverna™ PP filament should be printed at a printing temperature between 190 and 240°C and a base temperature between 95 and 125°C. If possible, it is recommended to have a heated chamber or passive heated chamber to keep the chamber temperature between 20 and 50 ºC.

Solubility

The soluble component contained in Caverna™ PP can be dissolved in hot water. Standard tap water at a temperature of 60-80°C will do. For optimal dissolution, it is recommended to leave the 3D printed part fully submerged for at least one day, changing the water approximately every four hours and keeping it at the recommended temperature.

Recommendations

Caverna PP filament is guaranteed by the manufacturer for one year if stored correctly. To prolong the shelf life of the material, the following storage techniques are recommended:

Always store Caverna in the original metallised bag.
Do not throw away the supplied desiccant sachet inside the bag.
If the desiccant sachet has been exposed to moisture, it is recommended to replace it with another one.
Add additional desiccants inside the bag whenever possible.