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Gustafs / Feltfon / Feltfon Curve
Gustafs / Feltfon / Feltfon Curve

Feltfon Curve

ACOUSTIC FELT WALL OR CEILINGS sound proof walls and ceilings

Feltfon Curve, a product in the Gustafs Feltfon product line, using Feltfon Linear as a base. Unleash your creativity with the freedom to interweave Feltfon ribs in straight and curved lines. The Capax Quick-Up system ensures sturdy, hassle-free installation on walls and ceilings. Customize your look with curved patterns, colors, or wooden in-fill strips. Create a acoustic felt wall with your own personal touch. Feltfon is fire-safe without impregnations. Elevate spaces with limitless design possibilities.

TYPE / SOLUTION

Feltfon Vector

APPLICATION

Ceilings, Wall, Wet rooms

Fire Class

B-s1,d0

Acoustic class

A, C, D

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Material

Gustafs Acoustex© 9 mm felt represents the next generation of textiles, crafted from a minimum of 50% post-consumer recycled material. This sustainable solution showcases our commitment to reducing environmental impact while maintaining exceptional quality.

Design

Feltfon Curve allowes you to create stunning cross-over rib designs with curved lines. Create your own design pattern using 4 variations of semicircles and quarter circle shapes. With a selection of six standard colors and three vibrant effect colors, you have a wide range of options to bring your vision to life.

A safe choice

Gustafs Feltfon System is specifically designed for public spaces, prioritizing safety and peace of mind. With its fire classification, B-s1,d0, this system makes little to no contribution to fire, ensuring a secure environment for all. Feltfon Curve is based on the Feltfon Linear rib and installed on the same capax system which means that the two products can be perfectly combined.

01 CREATE +
01 CREATE

Create your own unique acoustic wall pattern. Here with a combination of Feltfon Linears and Feltfon Curve semicircles.

02 SHAPES +
02 SHAPES

Play with semicircles and quarter circles to create your uniqe sound absorbing panels with acoustic felt.

03 INSTALLATION +
03 INSTALLATION

Gustafs Feltfon© are designed for Gustafs Capax© installation system – a perfect match for ceilings and walls. Simple, quick, sturdy, and demountable.

A smart acoustic felt solution

Acoustics

9 mm of felt thickness means 9 mm of air permeable material. Together with the hollow core, Feltfon Curve is a super absorber up to class A.

Recycled & Upcycled

Feltfon is made from recycled PET bottles and can be re-cycled multiple times. Feltfon is produced with 100% fossil free energy.

Wet rooms

Feltfon can be used in humid environments such as indoor gyms, pool areas and spas. Areas where you often want to eliminate disturbing sounds.

WET ENVIRONMENT +
WET ENVIRONMENT

Feltfon can be installed in swimming pools and spas, for example, to create a quiet sound atmosphere. Dries quickly and is not damaged by water.

ACOUSTICS +
ACOUSTICS

Improve office acoustics with a soundabsorbing wall from Feltfon curve customized pattern. Felt colour, Sand.

SOUND DAMPENING +
SOUND DAMPENING

Acoustic felt wall with Customized pattern. Dark grey, anthracite and wool grey acoustic felt ribs.

Break away from the linear pattern and unleash your creativity

01 FELTFON LINEAR

Feltfon Linear acoustic felt ribs

Feltfon Linear

With Feltfon Linear you can design your own sound absorbing walls and ceilings with beautiful felt ribs in different colours. Available in 15 different dimensions and 6 standard colours.

02 VECTOR SLASH

Feltfon acoustic felt rib in slash pattern

Feltfon Vector Slash

By using angled cut Feltfon Linear ribs you can create stunning patterns. Can be bespoke with different angels and combinations or using a standard angel. Please reach out to us with your design for a customized quote

03 VECTOR INTERSECTIONS

Feltfon acoustic felt wall intersection pattern

Feltfon Vector Intersections

Feltfon Vector – Intersections allows you to create visually striking effects by using straight lines that cross over each other, resulting in a sleek and modern appearance.

Break away from the linear pattern and unleash your creativity

Feltfon Vector curve offers unique and distinctive possibilities for creating captivating and dynamic wall designs. Create fresh and exciting patterns or use them as an accessory to complement your Feltfon Linear installation. Two simple designs with endless pattern combination possibilities.

02. CURVES

Feltfon Vector – Curves

Experience limitless creativity with Feltfon Curves, allowing you to design custom curved patterns using Feltfon Linear as a base. Choose from two variants: 1/4 – Quarter circles and – Semicircles, each with inner and outer parallel curves of different radius. The width of the Curved rib and the underlaying Feltfon Linear ribs is 40 mm.
Cut the ribs to the desired length when installing.

Semi circles

The 1/2 Semicircle variant creates a 180-degree turn, with the outer arc crossing 4 straight ribs and the smaller inner arc crossing 2 straight Feltfon Linear rib.

Semicircle-L outer radius: 144 mm
Semicircle-S outer radius: 82 mm

Quarter circles

The 1/4 Quarter circle connects to the side of a Feltfon linear rib or another Feltfon curve rib. The inner arc intersecting 1 rib and the outer arc intersecting 2 ribs.

Quarter circle-L radius: 144 mm
Quarter circle-S radius: 82 mm

INSPIRATION +
INSPIRATION
“Expanding”

PARTS IN EXEMPLE:
37 pcs Feltfon Linear rib 40 x 40 mm
7 pcs Feltfon Curve Semicircle L, 40 x 49 mm
7 pcs Feltfon Curve Semicircle S, 40 x 49 mm

Wall example 2400 wide and 2000 high

INSPIRATION +
INSPIRATION
“Hoops”

PARTS IN EXEMPLE:
11 pcs Feltfon Linear rib 40 x 40 mm
16 pcs Feltfon Curve Semicircle L,
16 pcs Feltfon Curve Semicircle S,

Wall example 2400 wide and 2000 high

INSPIRATION +
INSPIRATION
“Linked”

PARTS IN EXEMPLE:
23 pcs Feltfon Curve Quarter circle L,
20 pcs Feltfon Linear rib 40 x 40 mm
2 pcs Feltfon Linear Rib 40 x 49 mm

Wall example 2400 wide and 2000 high

INSPIRATION +
INSPIRATION
“Aim”

PARTS IN EXEMPLE:
30 pcs Feltfon Curve Quarter circle L,
18 pcs Feltfon Linear rib 40 x 40 mm
8 pcs Feltfon Linear Rib 40 x 49 mm

Wall example 2400 wide and 2000 high

INSPIRATION +
INSPIRATION
“Wave”

PARTS IN EXEMPLE:
7 pcs Feltfon Curve Semicircle L
7 pcs Feltfon Curve Semicircle S
25 pcs Feltfon Linear rib 40 x 40 mm

Wall example 2400 wide and 2000 high

INSPIRATION +
INSPIRATION
“Ice cream”

PARTS IN EXEMPLE:
4 pcs Feltfon Curve Semicircle L
4 pcs Feltfon Curve Semicircle S
8 pcs Feltfon Curve Quarter circle L
20 pcs Feltfon Linear rib 40 x 40 mm

Wall example 2400 wide and 2000 high

Feltfon Acoustic Felt – Green Acoustics made from rPET

Gustafs Acoustex – recycled PET is a next generation textile crafted from a minimum of 50% recycled PET bottles. The bottles are chipped into flakes and combined with fresh PET material. This innovative process ensures optimal reprocessing of PET, making it an environmentally-friendly choice. Furthermore, Feltfon is a 100% recyclable solution, emphasizing its commitment to sustainability.

01. STANDARD COLOURS +
01. STANDARD COLOURS

Select from a pallet of six standard colours. Wool grey, Dark grey, Anthracite grey
Sand, Wet Sand, Dirty Green.

02. EFFECT COLOURS +
02. EFFECT COLOURS

Enhance the design by adding a detail in one of our vibrant effect colours. Red Rust, Copper Oxide, and Murky Moss. Each color adds a unique and lively touch to your Feltfon designs

03. STURDY & SOFT +
03. STURDY & SOFT

With a 9 mm thick felt with a high density of 2 kg/m², Feltfon ribs will survive on walls in all types of public spaces.

Create unique felt sound absorbing panels

Feltfon Vector is based on the Feltfon Linear rib dimensions, with the intersecting rib being 9mm higher. This subtle difference in height enhances the visual impact of your designs. By mixing coulors and patterns freely, you can achieve an exciting and personal expression on your wall. The only limit is your creativity.

Dimensions

HIGHT: Max Hight Curves 2250 mm
Max Hight Linear Ribs: 2400
WIDTH: 40 mm
DEPTH: Semicircle 49 mm.
DEPT: Quarter Circle: 40 mm

OUTER RADIUS: Large = 144 mm,  Small = 82 mm

Spacing

Using the Gustafs Quick-Up Capax System we recommend spacings of 22 mm for Feltfon Curve.

Wooden In-fill strips

The Gustafs wooden in-fill strips are designed to be placed within the spacing between the felt ribs.

STANDARD

Standard dimensions Semicircle

LENGTH: 2250 mm
WIDTH Large, A: 288 mm
WIDTH Small, B: 164 mm
RIB WIDTH: 40 mm
DEPTH: 49 mm

Customized rib dimensions

Contact us for customized dimentions regarding Felt rib width, depth or curve radius.

 

Standard dimensions Quarter circles

LENGTH: 2400 mm
WIDTH Large, C: 133 mm
WIDTH Small, B: 73 mm
RIB WIDTH: 40 mm
DEPTH: 40 mm

Customized rib dimensions

Contact us for customized dimentions regarding Felt rib width, depth or curve radius.

SPACING

Wooden in-fill strips

Wooden Infill strips are available with the following veneers:

American Oak – Knotty Oak – Birch – Ash – Walnut – Wild Oak Smoked – Wild Oak Grey

 

Gustafs Linear Feltfon acoustics

Design something new with acoustic absorption coefficients up to the highest possible class A. A sound investment for the right kind of echo.

 

KNOWLEDGE HUB / ACOUSTICS

 

 

Acoustic absorption Feltfon Ribs, 40 x 40 mm, total depth 50mm

 

APPLICATION SPACING INSULATION αw / NCR
Wall 22 mm Acoustex 9 mm 0,55-D/ 0,80
Acoustic absorption Feltfon Ribs, 40 x 40 mm, total depth 95 mm
APPLICATION SPACING INSULATION αw / NCR
Wall 22 mm Acoustex 9 mm + 45mm mineral wool 0,95-A/ 0,95
Acoustic absorption Feltfon Ribs 40 x 40 mm, total depth 250 mm:
APPLICATION SPACING INSULATION αw / NCR
Ceiling 22 mm Acoustex 9 mm + air void 201 mm 1,00-A / 0,95
Ceiling 22 mm air void 211 mm 0,60-C / 0,65

Fire safety

Rest easy knowing that Feltfon Linear is fire-safe without the need for impregnations, prioritizing safety without compromising style.

Reaction to fire – classifications Gustafs Feltfon
PRODUCT REACTION TO FIRE
Feltfon Acoustex B-s1,d0

With our low emission Acoustex, you can breathe out.
And everyone else can breathe in.

Free from fire-retardants, added formaldehyde or isocyanate binders, the Acoustex material in Feltfon Linear guarantees extremely low TVOC levels.

KNOWLEDGEHUB / EMISSIONS

Our Linear Feltfon comply with the following building certifications
TVOC  required TVOC  result Formaldehyde required Formaldehyde result
BREEAM ≤ 0,3 (mg/m³) 0,01 (mg/m³) ≤ 0,01 (mg/m³) 0,005 (mg/m³)
LEED none U.S. ≤ 1,0 (mg/m³) 0,01 (mg/m³) < 0,06 (mg/m²h) 0,001 (mg/m²h)
BVB < 0,2 (mg/m²h) 0,01 (mg/m²h) < 0,05 (mg/m²h) 0,002 (mg/m²h)
M1 < 0,2 (mg/m²h) 0,01 (mg/m²h) < 0,05 (mg/m²h) 0,001 (mg/m²h)
Blue Angel ≤ 0,3 (mg/m³) 0,01 (mg/m³) ≤ 0,06 (mg/m³) 0,005 (mg/m³)

 

More Building Certifications >>

Green Acoustics

Sustainability is a fundamental part of our core and our target with Feltfon was to create a sustainable product that could match the good environmental credentials of all our other products. Feltfon is made from recycled PET bottles and can be re-cycled multiple times. Feltfon is produced with 100% fossil free energy.

KNOWLEDGEHUB / SUSTAINABILITY

READ MORE ON GREEN GUSTAFS

01 RECYCLED FELT +
01 RECYCLED FELT

Certified minimum 50% post-consumer rPET, granulated and spun into new Gustafs Acoustex 9.0.

02 RENEWABLE ENERGY +
02 RENEWABLE ENERGY

Producing in Sweden and surrounded by hydro power plants this is the main energy source for our production. The only other two are wind and solar power, adding up to a fantastic 100% renewable energy.

03 ENVIRONMENTAL DECLARATIONS +
03 ENVIRONMENTAL DECLARATIONS

Our products are environmentally declared and have all documentation in place to comply with leading building assessments like BREEAM and LEED.

Details that make the difference

Linear Accessories are unique details including lights, hatches, grilles or other solutions to be combined with your wall or ceiling system. Our linear accessories complete your vision and simplify complicated solutions.

F-Line – Linear lightning for Gustafs Felton Linear

Integral linear lightning solution for Gustafs Linear Feltfon System. Available in two versions; with decoration light and mainly used on walls and with full strength room lightning for ceilings. All F-Line solutions use a modern micro prismatic dimming in combination with high-quality LED light sources.

Acoustex 9,0 – Sturdy acoustic felt for multiple use

Extremely form stable acoustic backing in the colours Wool Grey, Dark Grey or Anthracite with fire class B-s1,d0. Can be used as an individual sound absorber or integral as the acoustic insulation layer behind Gustafs Feltfon Linear or Gustafs demountable Linear Ceiling-CD system. Supplied in sheets in various formats. Contains minimum 50% recycled PET bottles and is approved by all international standards regarding in-door climate emissions. Thickness 9,0 mm.

Wooden Infill strip for Feltfon Linear

Combine the wool look of Feltfon with beautiful wooden in-fill strips. Available in the following dimensions (depth x width x length): 13 x 23 x 2400, 13 x 54 x 2400 and 13 x 85 x 2400 mm. The wooden in-fill strip leaves 10 mm of visible rib depth in combination with a 40 mm deep Feltfon rib, 30 mm visible depth in combination with a 60 mm deep rib, etc. Wood species: American Oak / Knotty Oak / Birch / Ash / Walnut / Wild Oak Smoked and Wild Oak Grey.

Feltfon Vector – design inspiration

Feltfon Vector is based on Feltfon Linear. Combine different felt colours / dimensions and designs to create your own wall design. The other Feltfon Vector products is Feltfon Intersections, Feltfon Slash and Feltfon Layers. All Feltfon Vector products can be combined with Feltfon Linear.


Feltfon Vector Intersections combined with Feltfon Slash

Easy to install

Capax is our unique aluminium profile installation system that delivers a concealed, reliable, quick, and cost saving installation. The Quick-Up system is user-friendly and available for walls and ceilings. No tools are needed to assemble the interlocking components. Both the wall and ceiling system are demountable, ideal when access to the ancillary systems is required.

WALL INSTALLATION FELTFON LINEAR 

CEILING INSTALLATION FELTFON LINEAR

Avoid devalue engineering of your design

Gustafs has comprehensive, accredited test data for a wide variety of criteria such as fire, acoustics, emissions and many others. We tick all the boxes to comply your project with todays modern building standards. However, the following documents are not available for direct downloading. Please send a request or contact us or our country representatives for more information.

SEND REQUEST FOR CERTIFICATIONS

Available certifications for Feltfon Acoustex 9,0

Fire
+

Reaction to Fire: B-s1,d0

Acoustics
+

Configurations possible to achieve absorption class A, C or D. NRC: 0,60, 0,80, 0,95.

Environmental performance certification program for buildings
+

BREEAM
LEED
BVB
Svanen (Nordic Eco)
Sunda Hus

Emissions
+

Class E1 and M1. Approved for BREEAM International / LEED v4.1 / Svanen / Byggvarubedömningen / Sunda Hus / Blue Angel / AgBB / Belgian VOC / French VOC.

Declaration of Performance
+

DoP: Yes

EPD
+

Yes

FSC®
+

The wooden strips available vith FSC® (Forest Stewardship Council®) certified wood.
Gustafs FSC® certificate code is: SCS-COC-005137

READ MORE KNOWLEDGE HUB FSC® >>

And More
+

Added Urea formaldehyde: No
Isocyanate binders: No
Life Time:> 50 years
Recycled content>50% Post Consumer

PRODUCT SHEET
Feltfon Linear | pdf
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CAD/BIM & SPECIFICATION TEXTS
CAD & specification text I zip
DOWNLOAD
CAD-FILES
ACOUSTIC VALUES
Gustafs products | pdf
DOWNLOAD
TECHNICAL DATA SHEET
Technical Data Sheet Feltfon | pdf
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