Solvent-based Release Coatings

Solvent-based Release Coatings

Non–Silicone Release Coatings Benefits:

  • High purity provides clean release without ghosting
  • 100% dry powder
  • Based on polyvinyl octadecyl carbamate (PVODC) and polyvinyl stearyl
    carbamate (PVSC) chemistries
  • One step dilution process
  • Dilutable with aromatic and aliphatic hydrocarbons, chlorinated solvents
    and esters
  • Narrow melting point range assures consistent properties
  • Release effects remain stable after oven aging
  • Very low levels of solids needed, thus cost efficient
  • Does not require high temperature processing
  • Pre-dissolved solids for reduced time at use point, less waste
    and mixing accuracy
  • A special heptane blend is available for use in non-HAP applications
  • Liquid versions especially suited for “Siat”, or similar, printing presses

Escoat® P-20 Liquid

Introduction:

Escoat P-20 Liquid is a non-silicone product especially produced and widely used for pressure sensitive labels, film and tapes.  Its high degree of purity and quality offers superior  properties and performance to critical users.  Escoat P-20 Liquid is used on films with adhesives based on natural rubber, SBR, SIS, acrylic, etc. primarily for obtaining release in self wound tapes where tight peel is mandatory.  Escoat P-20 Liquid is expected to give a peel strength 2-3 times the level expected from most silicone release agents.  In addition, the non-stick properties of the resin in the Escoat P-20 Liquid finds use in a wide range of applications outside the pressure sensitive area.

Material Description:              Release Coat Varnish

Chemical Name:                     Polyvinyl Octadecyl Carbamate (PVODC)

   Isomeric hydrocarbon

Empirical Formula:                (PVODC)                                               [CH2-CH(OCONHC18H37)-]n 

  Toluene                                                 C7H8

 CAS #:                                    (PVODC)                                               36671-85-9                                  

 Toluene                                                 108-88-3

Molecular Weight:                (PVODC)                                               [339]n   or > 60,000                      

Toluene                                                 92

Physical Properties:            Appearance:                                         Clear to amber colored liquid [gel at low temps]

Odor:                                                      Benzol-like odor

Concentration:                                       10% solids

Solvent                                                  Toluene

Flash Point:                                           40º F (4.4º C) (Closed Cup)

Specific Gravity (H2O=1)                       0.82

Characteristics:

Being a 10% solids content, Escoat P-20 Liquid can and will form a gel upon standing. The stiffness of the gel depends upon the temperature. The gel may be dissolved back into the solution with very moderate temperature increases. Due to unknown flammability hazards of the toluene every precaution should be taken to prevent the consequences of incorrect handling. To avoid inconvenience of gel formation during coating operation, levels of 1% solids or less are recommended provided suitable coating techniques are available to give uniform consistent coating.

Application Instructions:

  • Temperature of Escoat P-20 Liquid Release Coats should be at least 90°F to preclude gel formation.
  • Mix well. Heat and mix until no residue is present. A milky waxy material could settle out if Escoat P-20 Liquid Release Coats are stored at temperatures significantly below 90°F.
  • Recirculate Escoat® P-20 Liquid Release Coat from a heated, large container (5 gallon). The entire system must be warm including analox roller and reservoir before applying.
  • For initial trial runs, operate at very slow speeds. It’s important to completely dry ink and release coat. Rewind rolls, and allow rolls to temperature stabilize for 3-4 hours. Then unwind. Check for adhesive pick-off and tack of adhesive.
  • Escoat P-20 Liquid provides good release properties and prevents delamination or tearing when applied to the backing on the side opposite the adhesive. It has been extensively tested and is widely approved for use with pressure sensitive tapes such as polypropylene, polyester, polyethylene, cellophane, duct tapes and other substrates that require unwinding ease. May also be used for foil and paper. When Escoat P-20 Liquid is used as a release coat on paper, a barrier coat is recommended. Escoat P-20 Liquid is particularly useful to give light release on so-called “easy peel” acrylics.
  • Good release properties can be obtained using as little as a 0.5 – 2.0% solids material in toluene and a very fine gravure roller. A smoothing bar after application is recommended. It is essential to keep the gravure roller clean at these low levels of application to ensure consistent application. Laboratory evaluations can be made with Meyer rods or other simple application methods where a consistent near monomolecular layer of Escoat P-20 can be put down.

Printing: Polypropylene, Polyester, & Polyethylene films:

When printing tapes, be aware that tapes coated with acrylic adhesives may have release coat on non-adhesive side. In addition, solvent rubber and hot melt adhesive coated tape will have release coat.

Printing Sequence:

Tapes with no release coat, printing procedure is as follows: Corona treatment -> print -> dry -> release coat -> dry

Tapes with release coat, printing procedure is as follows: Corona treatment or Primer -> dry -> print -> dry -> release coat -> dry

Release coat should be applied out of a heated recirculating system. Since toluene is corrosive to the printing plates commonly used with flexographic printing, choose plates that are solvent resistant.

Storage: 

This product is a flammable liquid. Store in sealed containers in approved flammable storage areas. Avoid open flame, sparks, and high heat during use. Do not breathe vapors.

Toxicity & Safety: 

This product is a flammable liquid. (See Storage above.) This material is not intended for use in products for which prolonged contact with mucous membranes or abraded skin, or implantation within the human body is specially intended, unless the finished product has been tested in accordance with the Food and Drug Administration and/or other applicable safety testing requirements. Because of wide range of such potential uses, Mayzo, Inc. is not able to recommend this material as safe and effective for such uses and assumes no liability for any such uses. Read and understand the Material Safety Data Sheet before using or handling this product.

FDA Regulations: 

The Escoat P-20 Solids (CAS # 36671-85-9) has been tested and approved for clearance for use in food contact applications. Contact your Mayzo representative if more details of this approval are needed.

Additional Product Details: Please view our Escoat P-20 Liquid PDF

Escoat P-20 Solids

Overview

Escoat P-20 Solids is a non-silicone product especially produced and widely used for pressure sensitive labels, film and tapes.  Its high degree of purity, quality and tight melting point range offers superior properties and performance to critical users.  Escoat P-20 Solids is used on films with adhesives based on natural rubber, SBR, SIS, acrylic, etc. primarily for obtaining release in self wound tapes where tight peel is mandatory.  Escoat® P-20 Solids is expected to give a peel strength 2-3 times the level expected from most silicone release agents.  In addition, the non-stick properties of the Escoat P-20 Solids resin find use in a wide range of applications outside the pressure sensitive area.

Chemistry

Chemical Name:                     Polyvinyl Octadecyl Carbamate

CAS Number:                         36671-85-9

Chemical Structure:                Proprietary

Typical Properties         

Product Form:                         Solid Melting Point:                          97 – 110oC

Molecular Weight:                               >60,000 g/mol

Applications 

Escoat P-20 Solids provides good release properties and prevents delamination or tearing when applied to the backing on the side opposite the adhesive. It has been extensively tested and is widely approved for use with pressure sensitive tapes such as polypropylene, polyester, polyethylene, cellophane, duct tapes and other substrates that require unwinding ease. Escoat P-20 Solids may also be used for foil and paper. When Escoat P-20 Solids is used as a release coat on paper, a barrier coat is recommended. Escoat P-20 Solids is particularly useful to give light release on so-called “easy peel” acrylics.

Good release properties can be obtained using as little as a 0.5 – 2.0% solids material in toluene
and a very fine gravure roller. A smoothing bar after application is recommended. It is essential to
keep the gravure roller clean at these low levels of application to ensure consistent application.
Laboratory evaluations can be made with Meyer rods or other simple application methods where a
consistent near monomolecular layer of Escoat P-20 can be put down.

Advantages

  • The narrow melting point range (+ 5°C) assures consistent release properties.
  • Release effects remain stable after oven aging.
  • Cost efficient. Requires a lower quantity than silicone release coatings. 0.01 to 1.0 grams of Escoat® P-20 Solids for one square meter of film is sufficient. Excellent release can be obtained using between 0.5 - 2.0% solids material in toluene, depending on film, coating equipment and desired release levels. Only needs a near-monomolecular film.
  • 100% dry powder.
  • No fire hazard or special red-label storage area required for Escoat® P-20 Solids dry powder.
  • One step dilution process. Properly diluted solution will not gel.
  • Does not require high temperature processing that is typically needed for silicone coatings.

Guidelines for Use

Depending on type of tape film and type of pressure sensitive adhesive, the concentration of solid matter is determined by pre-testing. If a 0.5% weight solution is required, add 500 grams of Escoat P-20 Solids to 2 kgs of toluene. Raise temperature to 122 - 144°F with constant stirring until it becomes clear. Then add this solution to 97.5 kgs of toluene.

Mixing time at 10% solids in toluene at 122 - 144°F requires about 20 - 30 minutes. It takes 2 – 3 hours to dissolve Escoat P-20 Solids at 10% solids in toluene at 120°F. The exact formulation to be used is dependent on the substrate, performance requirements, and other factors, and should be determined by the user based on testing to simulate actual conditions of use.

Storage

This product may be stored up to two years in a sealed container. Containers should be kept tightly closed and stored in a cool, dry place.

Safety

Please read and understand the Safety Data Sheet (SDS) prior to handling or using this product.

FDA Regulations

Escoat P-20 Solids (CAS # 36671-85-9) has been tested and approved for clearance for use in food contact applications. Please contact your Mayzo representative for complete details, including restrictions of use.

Additional Product Details: Please view our Escoat P-20 Solids PDF

Escoat P23

Introduction:

Escoat P23 Release Coat is a non-silicone product especially suited for printers of pressure sensitive labels, film, tapes including polypropylene, polyethylene, and polyester where appropriate release is needed.  Escoat P23 Release Coat is supplied in 3% solids concentrations and is ready for use without additional dilution or additives.

Material Description:            Release Coat Varnish

Chemical Name:                    Polyvinyl Octadecyl Carbamate (PVODC) Isomeric hydrocarbon

Empirical Formula:               (PVODC)                                [CH2-CH(OCONHC18H37)-]n

Toluene                                   C7H8

 CAS #:                                   (PVODC)                                70892-21-6                             

Toluene                                   108-88-3

Molecular Weight:                (PVODC)                                [339]n   or 110,000 –135,000              

Toluene                                   92

Physical Properties:            Appearance:                           Liquid

Odor:                                       Benzol-like odor

Concentration:                         3% solids

                                              Solvent                                    Toluene

Flash Point:                             45º F (7.2º C) (Closed Cup)

Application Instructions: 

  • Temperature of Escoat P23 Release Coats should be at least 90°F to preclude gel formation.
  • Mix well. Heat and mix until no residue is present. A milky waxy material will settle out if Escoat P23 Release Coats are stored at temperatures significantly below 90°F.
  • Recirculate Escoat P23 Release Coat from a heated, large container (5 gallon). The entire system must be warm including analox roller and reservoir before applying.
  • For initial trial runs, operate at very slow speeds. It’s important to completely dry ink and release coat. Rewind rolls, and allow rolls to temperature stabilize for 3-4 hours. Then unwind. Check for adhesive pick-off and tack of adhesive.

Printing: Polypropylene, Polyester, & Polyethylene films:

Tapes coated with acrylic adhesives may have release coat on nonadhesive side. Solvent rubber and hot melt adhesive coated tape will have release coat.

Printing Sequence: 

Tapes with no release coat, printing procedure is as follows: Corona treatment -> print -> dry -> release coat -> dry

Tapes with release coat, printing procedure is as follows: Corona treatment or Primer -> dry -> print -> dry -> release coat -> dry

Release coat should be applied out of a heated recirculating system. Since toluene is corrosive to the printing plates commonly used with flexographic printing, choose solvent resistant.

Storage: 

This product is a flammable liquid. Store in sealed containers in approved flammable storage areas. Avoid open flame, sparks, and high heat during use. Do not breathe vapors.

Toxicity & Safety: 

This product is a flammable liquid. (See Storage above.) This material is not intended for use in products for which prolonged contact with mucous membranes or abraded skin, or implantation within the human body is specially intended, unless the finished product has been tested in accordance with the Food and Drug Administration and/or other applicable safety testing requirements. Because of wide range of such potential uses, Mayzo, Inc. is not able to recommend this material as safe and effective for such uses and
assumes no liability for any such uses. Read and understand the Material Safety Data Sheet before using or handling this product.

FDA Regulations: 

This product has not been tested for clearance by the FDA for use as an indirect food additive in food packaging and/or other applications. Contact your Mayzo representative if FDA clearance is needed.

Additional Product Details: Please view our Escoat P23 PDF

Escoat RA 70A

Introduction:

Escoat RA-70A Release Coat is a non-silicone product especially suited for printers of pressure sensitive labels, film, tapes including polypropylene, polyethylene, and polyester where appropriate release is needed.  Escoat RA-70A Release Coat can be supplied in various solids concentrations and are ready for use without additional dilution or additives.

Material Description:            Release Coat Varnish

Chemical Name:                    Polyvinyl Stearyl Carbamate (PVSC)

  Heptane Blend

Empirical Formula:               (PVSC)                                   [CH2-CH(OCONHC18H37)-]n

                                                Heptane Blend                        C7H16

CAS #:                                    (PVSC)                                   36671-85-9                             

 Heptane Blend                        142-82-5

Molecular Weight:                (PVSC)                                   [339]n   or 110,000 –135,000              

Heptane Blend                        100.2

Physical Properties:            Appearance:                           Clear to amber in color liquid [gel at low temps]

Odor:                                       Hydrocarbon odor

Concentration:                                    RA-70A: 1.5% solids

Solvent                                    Heptane Blend

Flash Point:                             25º F (-4º C) (Closed Cup)

Application Instructions:

  • Temperature of Escoat RA-70A Release Coat should be at least 90°F to preclude gel formation.
  • Mix well. Heat and mix until no residue is present. A milky waxy material will settle out if Escoat RA-70A Release Coat is stored at temperatures significantly below 90°F.
  • Recirculate Escoat RA-70A Release Coat from a heated, large container (5 gallon). The entire system must be warm including analox roller and reservoir before applying.
  • For initial trial runs, operate at very slow speeds. It’s important to completely dry ink and release coat. Rewind rolls, allow rolls to temperature stabilize for 3-4 hours. Then unwind. Check for adhesive pick-off and tack of adhesive.

Printing: Polypropylene, Polyester, & Polyethylene films:

Tapes coated with acrylic adhesives may have release coat on nonadhesive side. Solvent rubber and hot melt adhesive coated tape will have release coat.

Printing Sequence: 

Tapes with no release coat, printing procedure is as follows: Corona treatment -> print -> dry -> release coat -> dry

Tapes with release coat, printing procedure is as follows: Corona treatment or Primer -> dry -> print -> dry -> release coat -> dry

Release coat should be applied out of a heated recirculating system. Since the Heptane blend can be corrosive to the printing plates commonly used with flexographic printing, choose plates that are
solvent resistant.

Storage: 

This product is a flammable liquid. Store in sealed containers in approved flammable storage areas. Avoid open flame, sparks, and high heat during use. Do not breathe vapors.

Toxicity & Safety: 

This material is not intended for use in products for which prolonged contact with mucous membranes or abraded skin, or implantation within the human body is specially intended, unless the finished product has been tested in accordance with the Food and Drug Administration and/or other applicable safety testing requirements. Because of wide range of such potential uses, Mayzo, Inc. is not able to recommend this material as safe and effective for such uses and assumes no liability for any such uses. Read and understand the Material Safety Data Sheet before using or handling this product.

FDA Regulations: 

This product has not been tested for clearance by the FDA for use as an indirect food additive in food packaging and/or other applications. Contact your Mayzo representative if FDA clearance is needed.

Additional Product Details: Please view our Escoat RA 70A PDF