KORAD* / Acrylloy*

KORAD* / Acrylloy*

Acrylic film for In-Line lamination of various substrates.
 
General Information

Acrylic film for In-Line lamination of various substrates.

Transparent-, colored- or reverse printed acrylic film for decoration and UV-Protection of plastic sheet and profiles, made from e.g. ABS, HIPS, PETG, PVC, PC, ABS/PC or for processing on FRP or HPL.

Clear. high- and low gloss grades, colored versions in customized width and in gauges ranking from 0.002" to 0.008", as well as reverse printed patterns in 0.002" or 0.003" gauge.

Korad* Transparent Films Clear - High- and low gloss


Spartech PEP utilizes an innovative extrusion blown film process that yields the world's only production of extremely thin yet wide width Korad® acrylic films. Measuring as thin as 0.0015" and ten feet wide, these films are produced on a commercial scale giving PEP the ability to participate in markets such as thermoplastic boat hulls (replacing FRP construction), bathtubs, one piece shower surrounds, farm tractor canopies and exterior building panels. Spartech PEP has exclusive worldwide rights to the Korad® polymers used to produce Korad® films and offers a variety of formulas to meet your exacting specifications.

Transparent Korad* grades are used for production of reverse printed ( see : Decors and Designs )

Korad* colors full opaque color range

Korad* Acrylic Film is based on a unique Multipolymer, whose properties allow the production of very thin film (45µ). – Films, made from this Polymer can assimilate 15 - 20 Percent of Pigments.
Such high concentration of Pigments ensures a total Barrier against the visible light and UV-Radiation.
The Lamination of colored Korad* Film to suitable Substrates, made from Thermoplastic resin or from Thermoset ( Film, Sheet or Profile ) secures protection of the parts versus all the light spectrum in Outdoor use. Thereby the „lifecycle“ of the final application is significantly extended. ( Facades, Window Profiles, Doors, Displays etc. )

Basically all opaque colors can be produced against customer’s guidelines and specifications. – Please have a look to the Standard Color range, stated below and the requirements for minimum Off takes:

Application

Korad* and acrylloy* are serving a highly effective UV-screening with over 40 years of actual performance in commercial applications.

Korad* and Acryloy* are doing their Job in various markets

Sanitary Tub

 

Garage Doors

 

Tractor roofs



       

Window, Doors and Shutters

 

body parts and trims

 

Camper / RV parts



       

Sporting goods

 

Sidings

 

lawn-mower housings


Datasheets & MSDS

Product data, MSDS and ISO-Certificates


Product data

Korad* - 05001  
Korad* - 05005  
Korad* - 05013  
Korad* - 05701  
Korad* - 05702  
Korad* - 65000  
Acrylloy* - 90005  
Acrylloy* - 90019  
Acrylloy* - 90025  
Acrylloy* - 90805  


ISO Certificates

Spartech ISO Cert Page 1  
Spartech ISO Cert Page 2  


MSDS

Decors and Designs

Please find hereunder Decors and Designs from different arrays: Dekoratives, Effects und Woodgrains. - Click for an enhanced, full screen image.

Decoratives
Alexandrite Amethyst Athena A009 Atlantis Gold Beige Parchment
Beige Travertine Blue-Gray Parthn Bone Travertine Breccia Taupe M Canyon Rock Amber
Canyon Rock Fossil Canyon Rock Sandal Canyon Rock Shale Celestial Marble Clay Breccia
Clouded Ebony Coral Granite Crackel Dover White Limestone Earth Parchment
Goldrush Granite B Gray Amherst Gray Granite 2-2015-099 Gray Granite 4-2015-059
Gray Granite 4-2015-578 Grey Bombay Jade Jasper Moonstruck
Noce Pearl Porto C Raw Linen Rock Creek 2
Rose Breccia Sierra Granite Marble Silver Ash Silver Celestial Slade Limestone
Slate Breccia Smokey Quartz Sunset Parchment Sunstone Taube Granit
     
Taube Limestone Teton      

Effects
Aluminium Brsh_ Strk_- Aluminium Brsh_ Strk_ Copper Brushed Aluminium Carbon
Real Tree Red Swirl Silver Block Silver Carbon Fiber Silver Swirl
       
Striation        

Woodgrains

Alfa Chestnut Amber Barley Bonanza Oak Brasil Cherry No 7
Brazilian Parque Cardinal Rosewood Cherry Ash Cobbler Cherry Dark Cherry
Dark Honey Oak Dark Oak Forest Maple Golden Maple Golden Oak
Hazelnut Honey Maple Hot Rod Oak Jackson Pecan Joliet Maple
Knotty Alder Medinah Cherry Merit Oak Millennium Walnut Moonlight Teak
Natural Hickory Natural Oak Nautical Teak Newtown Birch Oregon Oak
Pecan R03R Pine Ramin Mahogany Rocky Mountain Oak Saddle
Saratoga Oak Sierra Sunridge oak Vernon Maple Vintage Oak
     
Walnut Burl Wendy Oak      

FAQ

Frequently Asked Questions


Do you have any standard Korad® Colors?
What are the typical properties of free film?
Who can I contact to discuss printed Korad®?
Is Korad® related in any way to other impact modified acrylics like Plexiglas® DR?
Have the ingredients, composition, or polymerization that produce Korad® changed since 1966?
Are any plasticizers or lubricants ever incorporated into Korad®?
Does Korad® film itself require any UV stabilization?
What ingredients are added to Korad® to produce clear and transparent grades of film?
What ingredients are added to Korad® to product colored film?
Are UV absorbers added to colored Korad® films?
What ingredients are added to Korad® to produce a matte film?
What are the clear grades of film that Spartech PEP offers?
In what forms is Korad® available?
Can Korad® be repaired?
Can Korad be cleaned or waxed?
What quality control procedures are used to ensure the quality of the Korad® film?
What are the standard widths of Korad® film?
What are the standard thicknesses of Korad® film?
What is the approximate yield for typical gauges of Korad®?
What is the minimum thickness recommended for Korad®?
How is Korad® film used in an application?
What techniques are used to laminate Korad® to its substrate?
How do you laminate Korad® to its substrate?
What techniques should be used to laminate Korad®?
Can Korad®capped parts be painted or coated to change color?
Can regrind containing Korad® be re-extruded?


Do you have any standard Korad® Colors?
Yes we do! - Please have a look to the Product Overview.

What are the typical properties of free film?
The typical properties are listed under "Product Data".

Who can I contact to discuss printed Korad®?
Please talk to the ASP-Hoeft team first. - We will direct your inquiry to:

Spartech Film Converting Div.
601, Marvel Road
Salisbury, Maryland, 21801
USA

or to:

Protechnic
66, Rue Des Fabriques
B.P. 43
Cernay, Cedex
Frankreich

Is Korad® related in any way to other impact modified acrylics like Plexiglas® DR?
No, other impact modified acrylics (including DR) are physical or liquid mixtures of ingredients.

Have the ingredients, composition, or polymerization that produce Korad® changed since 1966?
No. Therefore, the performance of Korad® has been consistent fro over 40 years.

Are any plasticizers or lubricants ever incorporated into Korad®?
No. Korad®, through its unique composition and structure does not require such additives. Its properties come entirely from polymerization.

Does Korad® film itself require any UV stabilization?
No. Korad® is a 100% acrylic polymer and is, consequently, impervious to the effects of UV radiation.

What ingredients are added to Korad® to produce clear and transparent grades of film?
UV absorbers and antioxidants are incorporated into clear and transparent grades of Korad®. The UV absorbers protect the substrate below the Korad after lamination while the antioxidants protect it during processing. Benzotriazole is the absorber used as it provides the best UV protection over the widest range of radiation from the sun.

What ingredients are added to Korad® to product colored film?
High and low gloss colors of Korad® film are designed with inorganic pigments. The pigments selected have demonstrated their color stability in acrylic polymers and paint coatings for over 40 years. All colors are formulated from a fixed palette of pigments.

Are UV absorbers added to colored Korad® films?
No. UV screening is provided by the presence of the high concentrations of the pigments used. Visible light protection is also provided the substrate by the presence of these same high concentrations of pigments. Colored films are manufactured to a very high opacity with typical contrast ratios exceeding 97%.

What ingredients are added to Korad® to produce a matte film?
Micro pulverized inorganic and organic materials like silica and/or cross linked acrylic polymers. Matting is created internal to the film and is not affected by heating, stretching, or thermoforming. These same ingredients are used in clear and colored film.

What are the clear grades of film that Spartech PEP offers?
Spartech PEP offers 4 grades of clear and/or transparent film: 2 high gloss clear (05001 & 05005) and 2 Matte (05701 & 05805). All four products provide a UV screening surface over the substrate. 05005 & 05805 have improved stress whitening and water whitening resistance compared to the matte grades, but are also more expensive.

In what forms is Korad® available?
In what forms is Korad® available?

Can Korad® be repaired?
Yes. Look here under "Handling & Care"

Can Korad® be cleaned or waxed?
Yes. Look here under "Handling & Care"

What quality control procedures are used to ensure the quality of the Korad® film?
Reactor resin and other ingredients are blended in large quantities and are intensively compounded to be homogeneous. The film thickness is controlled by a continually oscillating extrusion blown film die and a rotating air ring. Continuous online statistical quality control procedures are used to monitor gauge, color, light transmission, and gloss.

What are the standard widths of Korad® film?
Typically Korad® is produced at 50", 54", and 62". It can be slit to widths as small as 2" and can be unfolded to width as wide as 120". Custom widths carry an up charge and minimum quantities may apply depending on gauge and color.

What are the standard thicknesses of Korad® film?
Typically, it is produced at 2.0 Mils (50 microns), 3.0 Mils (75 microns), and 6.0 Mils (150 microns). Intermediate thicknesses are available on request and the appropriate thickness is typically determined by the application.

What is the approximate yield for typical gauges of Korad®?
Look here under "Effectiveness"

What is the minimum thickness recommended for Korad®?
1.8 Mils (.0018). In order to benefit from the protective properties of Korad®, a minimum of 1.8 mils must remain AFTER the sheet is stretched, bent, or thermoformed.

How is Korad® film used in an application?
Korad® film is always laminated to a substrate. It is the substrate that provides structural integrity to the laminate. Primary substrates include: ABS, Polystyrene, PVC, Polycarbonate, Acrylic, ASA, Melamine, Thermoset Polyester Resin, and Thermoset Urethanes.

What techniques are used to laminate Korad® to its substrate?
Korad® is typically laminated to thermoplastic sheet continuously during the extrusion process. It may be applied with platen pressing, but care must be taken to use appropriate release agents on the platen surfaces. Korad® has also been laminated in reaction casting processed to polyesters and urethanes.

How do you laminate Korad® to its substrate?
Korad® is permanently bonded to plastic sheet substrates by passing the film and hot plastic sheet thru polishing and embossing rolls during the sheet extrusion process. Lamination is accomplished with the heat and roll pressure alone. No adhesive is required. Optimum adhesion to a smooth surface requires slightly higher polymer and roll temperatures than an embossed surface.

What techniques should be used to laminate Korad®?
Correct tension of the film is a key to successful lamination as sufficient tension is needed to ensure that the film will lie flat on the extruded sheet. Film contact with the laminating roll should be minimum, certainly less than 45 degrees. The longer the Korad® is in contact with the laminating roll, the greater the shrinkage which can create wrinkles and creases.

Can Korad® capped parts be painted or coated to change color?
Absolutely! No primer is required. Thorough cleaning will usually provide a readily paintable surface. Korad® is itself an outstanding primer. The user should do some testing, but a variety of solvent and water based coatings have been successfully used.

Can regrind containing Korad® be re-extruded?
Yes it can! Regrind containing Korad® has been successfully used in ABS, Polystyrene, PVC, and Acrylic. In general, normal scrap generated is completely recoverable and at the same levels as non-Korad capped scrap.
Handling & Care

Handling & Care of Korad Laminates
Korad laminates will retain their original beauty with reasonable handling and care.

DO's and DON'TS
Do´s:
 
• Dust and clean Korad with a soft, damp cloth or chamois, wiping the surface gently.
• Use pure soap and lukewarm water. Other cleaning agents are listed below.
• Dry the surface after washing and rinsing, by blotting with a damp cloth or chamois.
• Wax the surfaces sparingly for protection and the highest degree of polish. Apply one of the recommended commercial waxes (listed below) sparingly in a thin, even film, with a soft, clean cloth.
• Polish waxed surfaces lightly with a clean cotton flannel or jersey. After polishing, wipe gently with a damp cloth to ground any electrostatic charges which may attract dust particles.
Korad surfaces may be cleaned using mild detergents or most household cleaners.
Strong soaps or abrasive cleaners should not be used
!
 
Following is a list of recommended cleaners:
* Isopropanol ( 45 % )
* All Detergent Powder
* Calgonite*
* Mr. Clean*
* Top Job*
* Johnson´s Pledge*
* Wisk*
* Joy*
* Cascade*
Waxes recommended:
e.g.
* Simonize*
* Aero Wax*
* Glo-Coat*
Graffiti may be removed by wiping the affected area with a 1:1 mixture of mineral spirits and undiluted household cleanser such as Mr. Clean or Top Job.
 
Don´ts:
 
• Do not use cloths containing grit or abrasive particles, or kitchen scouring compounds to dust or clean Korad film. Light scratches may be rubbed out with Simonize wax (see below).
• Do not subject Korad laminates to hard, direct blows.
• Do not use boiling water, strong solvents or other materials listed below to clean Korad film, as they will soften the plastic.
Korad surfaces may be waxed with one of the recommended waxes listed below.
The Korad surface must be cleaned by washing first.
 
Cleaners NOT Recommended:
 
* Tetrahydrofuran
* Methanol
* Ethanol
* Isopropanol ( > 70 % )
* Gasoline
* Halogenated Hydrocarbons
* Brake Fluid
* Aromatic Hydrocarbons
* Kerosene
* Perchloroethylene
* Trichloroethane
* Trichloroethylene
* Abrasive Cleaners and -milk
Waxes NOT recommended:
* Plasti Shine*
* Turtle Wax*
* Johsons´s Pride*
* Body Sheen*
PLEASE NOTE: The recommendations made in the above statement, only apply to the experiences made, during treatment of Korad* surfaces. They therefore do not state at all about the basic quality of the products as such.
Effectiveness
Compared to other methods, Korad* is a very cost effective solution to protect plastic surfaces against degradation from UV-Radiation.
 
Area yield of different Korad* Versions:

In general, 0.003" film yields 50 square feet per lb and 0.006" film yields 25 square feet per lb. The precise yield, however, is a function of the film's density or specific gravity. The specific gravity of Korad films will vary as a function of the gloss and pigments systems used to develop a specific color.
Korad* Grade:
05001 - Clear, high gloss
05701 - Clear, low gloss
55000 - Black, high gloss
55600 - Black, low gloss
65000 - White
65004 - Shell White
55001 - Pearl Gray
0.003" Gauge:
56 Sq. ft. / lbs.
52 Sq. ft. / lbs.
56 Sq. ft. / lbs.
56 Sq. ft. / lbs.
49 Sq. ft. / lbs.
51 Sq. ft. / lbs.
53 Sq. ft. / lbs.
0.006" Gauge:
28 Sq. ft. / lbs.
24 Sq. ft. / lbs.
28 Sq. ft. / lbs.
28 Sq. ft. / lbs.
25 Sq. ft. / lbs.
25 Sq. ft. / lbs.
26 Sq. ft. / lbs.
Effectiveness ( compared to Coextrusion ):
Korad* and Acrylloy* Acrylic film, in most cases, are more economical than coextruding a "weatherable" surface over a "non-weatherable" substrate. The reason is that only 0.003" Korad film is necessary to surface any sheet thickness from 0.060" to 0.600". Compare this to a coextruded layer equal to 20% of the total sheet thickness that is recommended for coextruded cap sheet constructions.
The Korad Equation:
Korad*-Thickness x Korad*-Price Plus Substrate-Thickness x Substrate-Price
vs.
Coex-Thickness x Coex-Price Plus Substrate-Thickness x Substrate-Price
400 Mil ( 0.4" ) Sheet Calculation Example:
Korad*: 0.003" x $13,00 / lb. Plus 0.397" x $1.00 / lb. = 436 Cross Sectional Cost
v.s.
Coextrusion: 0.080" x $2.20 / lb. Plus 0.320" x $1.00 / lb.496 Cross Sectional Cost
In this 0.400" Example, the Korad construction is 12,1 % Less Expensive than Coex. - The calculation is based on a 20% "weatherable" cap of ASA over ABS using typical market pricing for a white pigmented substrate and white Korad Acrylic film.

In addition to these purely volumetric material cost considerations, several other factors will also affect the relative economics of Korad film lamination vis a vis coextrusion:

 

1. NO WASTED MATERIAL UPON START-UP:
The Korad film is introduced into the calendar stack only after acceptable sheet gauge is obtained. Saleable commercial laminate occurs within a few feet after the film is introduced. Compare this to the scrap generation which occurs while attempting to balance two extruders in a coex operation.
2. SMALL RUNS ARE VIABLE:
Should a small quantity of a color be desired, this can be readily accomplished in a matter of minutes by simply switching colors of Korad film. Since the Korad is totally opaque at 0.003", the color of the base sheet need not be adjusted. Only Korad lamination allows changes from black to white to black again with virtually no scrap generation.

3. NO COEXTRUDER TO CLEAN:
Since Korad film lamination utilizes only the substrate extruder, no delays or expenses involved in purging out a coextruder are encountered. The coextruder is then available to be used to extrude another substrate layer such as a thin virgin layer over a regrind-rich base layer.
4. NO COLOR ADJUSTMENTS:
Korad comes to the sheet extruder in pre-quality controlled, uniform color; color which is consistent throughout your extrusion run and consistent each time you run.
5. NO MORE "SHINY BARS" ON YOUR MATTE SHEET:
Our matte Korad film eliminates the shiny bars often resulting from polishing roll hot spots and the scrap which is generated by this phenomenon.
All these points considered, Korad becomes truly the most economical surfacing system you can use - as well as the most weatherable.
Processing

Thermoplastic Lamination Techniques for Korad*:



Korad* film is permanently bonded to plastic sheet substrates (ABS, PVC, HIPS, PMMA, PC) by passing the film and hot plastic sheet through polishing or embossing rolls during the sheet extrusion process.

Lamination is accomplished with the extrudate heat and roll pressure alone; no adhesive is required.
Optimum lamination conditions will vary with the substrate employed, sheet thickness, and equipment. Optimum adhesion to smooth sheet requires that higher polymer and polishing roll temperatures be employed than during the production of an embossed laminate.

For most substrates, Korad* addition does not significantly change the physical properties of the sheet; however, Korad* does improve surface properties and appearance.

In addition, the sheet characteristics on exterior aging are improved over the unsurfaced sheet when a minimum of 0.0018" (1.8 mils) of Korad film remains after forming.

* Please watch carefully:

1.) Correct tension of the Korad film is a key to successful lamination. Without sufficient tension the spreader roll will not operate correctly and the film will not lay flat on the extruded sheet.

2.) Film contact with the laminating roll should be minimum as illustrated in the figure below. We recommend as little contact as possible. Certainly less than 45 degrees. The longer the Korad is in contact with the roll, shrinkage may occur, creating wrinkles/ creases.

3.) The proper use of a bow-roll or spreader roll is important. This roll must be mounted in the correct direction and positioned to achieve the maximum effect. The roll manufacturers will provide instructions for optimum performance.

4.) The distance the film must travel unsupported should be minimal. This permits better control of the tension of the film and minimizes wrinkling.

5.) Good gauge control of the substrate material is also important. Poor sheet gauge can cause problems that appear to be wrinkles. Sheet should always be on gauge before the Korad film is introduced.
UV-Protection

UV-protection:

Electromagnetic radiation is commonly divided into 7 classifications as presented in the above figure. The figure also shows the amount of solar UV and visible light reaching the earth as a function of wavelength.

The shortest wavelengths in sunlight are the ultraviolet, extending down to a wavelength of about 295 nanometers. The earth's atmosphere filters out the shortest wavelength radiation, which is most of the ultraviolet region. But even though UV constitutes just 5 percent of the total sunlight reaching the earth's surface, these remaining short wavelengths are responsible for virtually all the damage to polymers.
The Quantum theory states that, unlike other forms of energy, light comes in discrete particles called photons. Photons behave much like tiny projectiles traveling at the speed of light. The "size" of a photon is inversely proportional to wavelength - the shorter the wavelength, the bigger the photon.
Photochemical reactions are caused by a single photon colliding with a single electron. If the photon is big enough (i.e., contains more energy than the organic bond strength) the electron is knocked out of its orbit and a reaction occurs. If the photon is not big enough, the energy of collision is harmlessly dissipated and no reaction occurs. For every chemical bond, there is a critical threshold size of photon (and hence a threshold wavelength) with enough energy to cause a reaction. Light of any wavelength shorter than the threshold wavelength can break the bond, but light of wavelengths longer can never break the bond.
An analogy to the Quantum Effect is throwing objects at a window. If you throw 5 lbs. Of sand at a window, one grain of sand at a time, the glass would remain intact. But if you threw a 5-lb. rock, the glass would shatter.
UV & Visible Light Screening Properties.

Korad and its "Screening"-Effect for UV- and visible light:

To understand how Korad Acrylic film protects any thermoplastic substrate, consider the UV transmission curves of transparent and Pigmented (Opaque) film.

Note how virtually no UV radiation in the critical range of 295-370 nanometres passes through either transparent or pigmented opaque Korad film. This "screening" effect is analogous to suntan lotion for skin. The clear Korad film acts as a clear lotion; the pigmented opaque film acts like Zinc Oxide paste for ultra protection. Thus, the appearance of your Korad laminated part will exhibit excellent long-term Weatherability, resisting fading, crazing, dulling and hazing.

Korad* and Acrylloy* are making your products "Fit for Outdoor", creating a longer lifecycle of your application and is improving the Reputation of your products. - Give it a try !

 

Chemical Resistance

Stain resistance and Chemical resistance to solvents:

Stain:
Household Ammonia
Citric Acid ( 10 % )
Coffee
Tea
Mustard
Olive Oil
Naphta
100 Proof Alcohol
Sodium Hydroxide ( 10 % )
Beet Juice
Grape Juice
Butter
Hydrogen Peroxidw ( 10 % )
Wax Crayon
Hydrchloric Acid ( 10% )
Methyl Alcohol
* Tests run in accordance with NEMA Test LD-1-2.05
Solvent:
Ethyl Alcohol ( 10 % )
Iso-Octane
Gasoline
JP4-Jet Fuel
Motor Oil ( SAE-30 )
Ethyl Acetate
Toluene
Sulfuric Acid ( 30 % )
Nitric Acid ( 10 % )
* Tests run in accordance with ASTM D-543, 7 days immersion at 75°F
Result:
No Change
No Change
No Change
No Change
No Change
No Change
No Change
No Change
No Change
No Change
No Change
No Change
No Change
Slight Change
Slight Change
Definite Change
Swollen
No Change
No Change
No Change
No Change
No Change
Dissolved
Dissolved
No Change
No Change