NORVA PLASTICS logo
Home  |  Community  |  Contact  |  Inquiries  |  Norva News  |  Media |  Artwork | Index
Ph: (757) 622-9281 Toll Free: 1(800) 826-0758
 
 
   
Komacel®

Kömacel is an integral skin-foam sheet made of rigid PVC according to the Celuka process.  Its positive characteristics make a multitude of applications possible.  Practical experience has proven its quality.

Characteristics

• fine-celled foam structure
• firm, smooth outer skin of up to 2 mm thickness
• surface with silk gloss finish
homogeneously colored

Advantages

• high flexural strength
• low weight
• low thermal conductivity, high insulation resistance
• absorption of vibrations
• resistant to chemical substances and non-corroding
• weatherproof and light-fast
• low absorption of water, no rot
• particularly easy workability
• low flammability, fire behavior according to UL94-V0 thickness 4 mm
• smooth surface, ideal for printing
• very suitable for bonding
ready for indoor and outdoor use without pre-treatment

Areas of application

Advertising - Signs, displays, decoration of shop windows, exhibition stands

Building sector - Shop fitting, interior decorating, for rooms where resistance of humidity is required (bathrooms etc.), air-conditioning and ventilation systems, heat and sound insulation, cladding, window and parapet elements, roller shutter boxes, door panels
Electrical industry - Control cabinets, channels for cables and wires, control panels

Miscellaneous - For containers, apparatus, models, equipment for photographic laboratories, electroplating, signs on building sites, shelves and table tops in laboratories

Tolerances

Thickness (s)

± (0.1 + 0.05 · s)

Width

0 + 0.25 mm

Length

0 + 10 mm

Precision of right angles

max 1.5 mm/m

Angle of cuttings

0.5°

Evenness

max 1.5 mm/m


Properties - top

Properties Examination method Unit Values 4,5,6 mm

Values

8,10,13 mm

Values

19,24,30 mm

Mechanical properties

*(Apparent) Density

DIN 53 479

g/cm3

0.85

0.55-0.60

0.55-0.60

Tensile strength

DIN 53 455

N/mm2

20

15

-

Elongation at tear

DIN 53 455

%

30

20

-

Flexural strength

DIN 53 452

N/mm2

30

30

20

Compressive strength (range of  elasticity)

DIN 53 421

N/mm2

10

4

3.5

Compressive stress for a compressive strain of 30%

DIN 53 421

N/mm2

20

9

5.5

Modulus of elasticity

DIN 53 457

(similar to)

N/mm2

1100

850

1100

Impact strength at  + 20C

DIN 53 453

kJ/m2

20

17

-

0°C

DIN 53 453

kJ/m2

-

15

-

- 20°C

DIN 53 453

kJ/m2

-

13

-

Ball pressure hardness

DIN 53 456

N/mm2

-

20

-

Shore hardness D

DIN 53 505

 

55

75

77

The missing values of Kömacel - 19/24/30 mm - cannot be determined in conformity with the standards by applying measurem, techn.

Thermal properties

Vicat softening temperature

DIN 53 460

°C

75

74

77

Temp. of deflexion under load acc. to ISO/R 75 (HDT)

DIN 53 461

°C

56

63

-

Coefficient of linear thermal expansion

(from -30°C to +50°C)

DIN 53 752

mm/m °C

0.08

0.08

0.08

Thermal conductivity (from 0°C to +60°C)

DIN 53 616

W/mK

0.10

----0.05 - 0.07----

* u-value (rate of heat transfer)

DIN 52 616

W/m2K

 

10 mm 13 mm 19 mm 24 mm 30 mm
app. 3.0 2.6 2.13 1.9 1.58
The missing values of Komacel - 19/24/30 mm - cannot be determined in conformity with the standards by applying measurem. techn.
Electrical properties

Surface resistance

DIN VDE 0303 T3 ohm >1·1014 3.7·1014 7.0·1014

Volume resistivity

DIN VDE 0303 T3 ohm*cm 4·1015 4.4·1015 6.0·1015

Dielectric strength

DIN VDE 0303 T2 kV/cm 100 48 48

Dielectric constant E

DIN 53 484 T2 2.4 1.9 1.8

Dielectric dissipation factor

DIN 53 483 T2 0.013 0.013 0.0084

Tracking resistance

DIN IEC 112 CTI 600 CTI 600 CTI 600
Other properties

Valued sound insulation measure Rw

DIN 522120/84 dB -
10 mm 13 mm 19 mm 24 mm 30mm
app. 3.0 2.6 2.13 1.9 1.58

Water absorption after 7 days

DIN 53 495 % > 0.2 app. 0.2 app. 0.2

Fire behavior

DIN 4102 (D)  

B 1 (Color 654, thickn. 4,5,6,10 mm)

 

NFP 92-501 (F)  

M 1 (Color 654, thickn 4,5,6,10 mm)

BS 476, Part 7, 1971 (UK)

 

Class 1 (Color 654, thickn. 4mm)

UL 94 (USA)

  V0 V0  

VKF (Switzerland)

  5.3 5.3 5.3
  Italia (I)   Class 1 Class 1 (Color 654, thickn. 10mm)

Allowable for contact with foodstuff

  -----------------NO----------------


Working Directions - top

Machining

Kömacel sheets can be easily and quickly worked with standard tools and machinery used in the timber and metal-processing industries.  They can be cut, sawn, turned, filed, drilled, planed, milled, screwed and polished.  The tools must be sharp in order to prevent breaking and splitting.  High cutting speed, low forward feed and low rate of cut should generally be used.  Normally it is not necessary to cool the cutting tools, in special cases compressed air is sufficient.

 

Forming

Deep-drawing and blowing of Kömacel sheets is only possible up to a certain extent.  The same applies to bending and folding.

 

Welding

Kömacel sheets can be welded according to the usual welding procedures; however, extreme care must be taken, since the foam might collapse.

 

Bonding

Kömacel sheets can be bonded with other Kömacel sheets or with different rigid PVC materials.  Depending on the requirements and the type of application, different adhesives can be used.  For bonding Kömacel sheets with other Kömacel sheets, adhesives containing solvents as well as solvent-free polyurethane adhesives are suitable.

 

Printing

Due to their smooth surface, Kömacel sheets can be easily printed, painted and lacquered.  They are especially suitable for screen printing, for which special inks are used (the surface of the PVC is slightly etched, thus ensuring good adhesion.  Ray-hardened inks are now also used; this process could, however, cause discoloration of the unprinted surfaces).  The surface to be printed must be clean and free from grease.

 

Due to high absorption of heat, the printing of large surface areas with dark colors should be avoided when the sheets are exposed to direct sunlight.

 

Fixing recommendations - top

Kömacel sheets are made of thermoplastic PVC and, therefore, vary more in length than wood or metal working materials (please note the coefficient of linear thermal expansion).

 

When installing screen-printed advertising boards in cricket or soccer stadium, or when fixing curtain-walling and cladding, a possible expansion of the sheets has to be taken into account.

 

The appropriate fixing method depends on the type of application.

     
Suicide Prevention DoorSuicide Prevention Door
Developed for Patient Human Rights surveyors to provide additional privacy.
Suicide Prevention Sink Faucet Suicide Prevention Sink Faucet
Self-closing, push-button, metered faucets water, and money.
Suicide Prevention Shower Control HandlesSuicide Prevention Shower Control Handles
Control knob is recessed, no hanging points.
Suicide Prevention Soap DispenserSuicide Prevention Soap Dispenser
Secured to the wall is virtually indestructible – Safe for the Patients
Sentinel Event Reduction DoorSentinel Event Reduction Door
the first recognized
and patented door designed with safety features to prevent inpatient suicides.

Suicide Resistant Toilet Paper DispenserSuicide Resistant Toilet Paper Dispenser
One piece- impact resistant Solid Surface Material.
Life Safety Lexan Covers Life Safety Lexan Covers High-impact polycarbonate
Withstand major abuse (field tested for over 7 years)

Impact Resistant Polycarbonate Light Lenses and MirrorsImpact Resistant Polycarbonate Light Lenses and Mirrors
We can fabricate any size.
Hospital Pharmacy Drug Return Drop BoxHospital Pharmacy Drug Return Drop Box
Made of Polycarbonate - unbreakable.
Suicide Prevention Door Handles, Patient DoorsSuicide Prevention Door Handles, Patient Doors
Suicide Resistant, no hanging points.
ABS High-Impact Plumbing CoversABS High-Impact Plumbing Covers
Toilet and underneath sink plumbing covers.
Suicide Resistant Sink/ Vanity Combo Unit
Suicide Resistant Sink/ Vanity Combo Unit

LEED product, meets Federal standards.
ADA Compliant Grab BarsADA Compliant Grab Bars
For Healthcare and Correctional Facilities or Retrofit Applications
Polycarbonate Two-way MRI Warning DoorsPolycarbonate Two-way MRI Warning Doors
Doors move both directions for easy movement of patients
Precision Board - High Density UrethanePrecision Board - High Density Urethane
Sizes: ½”, ¾”, 1”, 1.5”, 2”, 3” - Densities: 15, 18 & 30 lbs
 
AcrylicsAcrylics
Krinkglas, Acrylite FF
Acrylite GP, Acrylite Plus
Acrylite AR
Acrylite Rod
Acrylite Sheet
Acrylite Tubing
Marine and Signage Marine and Signage
Polycarve,
Woodgrain Panel
Burl Plastic Panel
Stone and Marble
Hi-Tech
Color Cores
PVCPVC
Type 1
CPVC Vintec
Celtec
Komacel
Celtec Expanded
Celtec 700
NylonNylon
Nylon,
Cast Nylon
PolyethylenePolyethylene
Low Density,
High Density,
Cutting Board,
Seaboard
KydexKydex
General Info,
Available Grades
PVC Vinyl Strip PVC Vinyl Strip
AdhesivesAdhesives
PhenolicPhenolic
Fabrication Info, Phenolic Selection Chart, Canvas C-CE, G10-FR4, G11-FR5, GPO-1, GPO-3, Paper X-XX-XXX, Linen L-LE, G5-G9, G7, Counter plate Laminate, Static Dissipate Laminate, Ballistic-Resistant Laminate
Additional Products Additional Products
Corian, Delrin, Polypropylene, Teflon, UHMW, Hydlar, ABS, Starboard, Flexible Tubing, Coraplast, Kytec, LUMAsite, Machinable Boards, Lexan Life Safety Products, Sentinel Event Reduction Doors
Norva Plastics, Inc. • 3911 Killam Ave., Norfolk, Virginia 23508
Toll Free: 1(800) 826-0758  • Ph: (757) 622-9281 • Fax: (757) 623-2859 • Email:
info@norvaplastics.com