Water-based Release Coatings

Water-based Release Coatings

Mayzo’s water-based release coatings represent a “greener” alternative to traditional solvent-based products. Use of water-based release coatings can help to reduce VOC emissions as well as reduce concerns of worker safety associated with the use HAP solvents.

Benefits of water-based release coating include:

  • Based on acrylate, polyvinyl acetate / acrylate, fluoro-acrylate, fluoro-phosphate ester, modified polyurethane, polyester / acrylic and modified starch chemistries
  • Recyclable and repulpable
  • Wide release levels
  • Release effects remain stable after oven aging
  • FDA approved for indirect food contact (see product list)
  • Printable (see product list)
  • Uses include masking tape, paper, and “Sticky Note” type applications

Escoat® P-20 Dispersion

Introduction:

Escoat® P-20 Dispersion is a water-based non-silicone product especially produced for use in pressure sensitive labels, film and tapes applications where a non-solvent is needed.  The high degree of purity, quality and tight melting point range of the Escoat P-20 offers superior properties and performance to critical users.  Escoat P-20 Dispersion can be used on OPP or PET 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 Dispersion is expected to give a peel strength 2-3 times the level expected from most silicone release agents.

Material Description:            Carbamate Release Coat Dispersion

Chemical Name:                    Polyvinyl Octadecyl Carbamate Dispersion

Empirical Formula:               [CH2-CH(OCONHC18H37)-]n  in H20

CAS #:                                    36671-85-9 in 7732-18-5

Molecular Weight:                [339]n   or > 60,000 ; water=18

Physical Properties:             Appearance:                                       liquid

Melting Range (Escoat P-20):            97 - 107°C

% solids (Escoat P-20):                      19-22

Clarity, ADSAM082,

Heated to 70 °C (Escoat P-20):          Clear (10 g/100ml of toluene)

Color, ADSAM121,

Gardner (Escoat P-20):                      <5

Solubility in Water:                              Disperses in water

Viscosity (mPa.s/25°C):                     5-12

pH (10 times diluted):                          ~9

Characteristics: 

At a solids level of 10-20 %, Escoat P-20 Dispersion does not form a gel upon standing as the solvent version does. The Escoat P-20 Dispersion is not a flammable hazard, and thus can be handled like
any water-based product.

Mixing Instructions: 

Depending on type of tape film and type of pressure sensitive adhesive, the concentration of solid matter is determined by pretesting. Simply add the amount of distilled water to the Escoat P-20 Dispersion to obtain the desired concentration.

If limited drying capabilities are available, the Escoat P-20 Dispersion can be diluted with 5-40% Isopropyl alcohol (IPA) instead of water, if environmental regulations allow.

Applications: 

Escoat P-20 Dispersion provides good release properties and prevents delamination or tearing when applied to the backing on the side opposite the adhesive. Escoat P-20 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. When Escoat® P-20 Dispersion is used as a release coat on paper, another version may be required. Escoat P-20 Dispersion 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 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.

Usually a web temperature of >100°C is required for the drying of the water from the Escoat P-20. Better results can be obtained by using very high levels of air exhaust. If the Escoat P-20 Dispersion does not dry with distilled water dilution, then try replacing some of the water with IPA. Also, the coating layer can be made thinner with a higher solids Escoat P-20 Dispersion.

Advantages: 

  • A water dispersion for non-solvent applications.
  • 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, depending on film, coating equipment and desired release levels. Only needs a nearmonomolecular film.
  • No fire hazard or special red-label storage area required for Escoat P-20 Dispersion.
  • One step dilution process with no fears of gels forming.
  • Does not require high temperature processing that is typically needed for silicone coatings.

Storage:

Keep away from fire and sunlight. Protect eyes and skin from direct contact and avoid inhaling. Do not store below 5°C or over 40°C. Keep container tightly closed. DO NOT ALLOW THIS PRODUCT TO FREEZE.

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: 

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 Dispersion PDF

Escoat RA 130W

Introduction:

Escoat RA-130W Release Coat is a non-silicone, acrylic water based emulsion which provides superior release characteristics when applied to polyethylene and polyester films.   Escoat RA-130W has a strong wetting and adhesion performance with PET and corona treated PE substrates.  Escoat RA-130W is useful for duct tape and other tapes where an aqueous coating is needed.

Material Description:            Acrylic emulsion Release Coat

Chemical Name:                    Acrylate

Empirical Formula:               Proprietary Blend

CAS #:                                    Mixture

Molecular Weight:                Proprietary

Physical Properties:             Appearance:                           Off white, milky emulsion

Ionic Characteristic:                Nonionic

Solids Content:                        51-52%

Solvent:                                   47+% Water

pH:                                         4.5 +/- 1

Specific Gravity:                     ~1.1

Viscosity:                                 <100cps

Flash point:                              >94 °C (>200 °F) [Closed cup]

Mixing Instructions: 

Depending on the type of substrate and pressure sensitive adhesive, the concentration of solid matter required should be determined by laboratory trial. Escoat RA-130W Release Coat diluted to between 2.0% to 5.0% solids will be adequate in most pressure sensitive applications. Stir well before use.

Applications: 

Escoat RA-130W Release Coat is diluted in water to achieve application concentrations. Depending on the substrate and adhesive, the solids concentration should be determined by lab test. Recommended levels are between 2.0 - 5.0%. Film substrates should be corona treated to ensure adhesion to the substrate. Coat at 4 - 5 gm/m2 (wet coat weight) using conventional coating methods with Meyer rod, Anilox or Gravure rollers. Coated substrate must be thoroughly dry before rewinding.

Advantages: 

  • Offers an easy peel release. The smooth release properties are similar to PVODC release coatings.
  • Cost Efficient. Excellent release can be obtained using as little as 2.0% solids concentration, depending on film, adhesive, coating equipment and desired release levels. The 51-52% solids allow less water to be shipped.
  • Low temperature curing.
  • A glossy coating.
  • Can be used with aggressive solvent, hot melt or aqueous acrylic adhesives.

Storage: 

Keep away from fire and sunlight. Protect eyes and skin from direct contact and avoid inhaling. Do not store below 5°C or over 40°C. Keep container tightly closed. DO NOT ALLOW THIS PRODUCT TO FREEZE. It will no longer be usable.

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: 

Escoat RA-130W Modified Release Coat does not have any approval for indirect food contact.

Additional Product Details: Please view our  Escoat RA 130W PDF

Escoat RA 150W

Introduction:

Escoat RA-150W Release Coat is a high quality release coating developed for pressure sensitive adhesive tapes to provide controlled release.  It adheres well to polyester and corona or flame treated polyolefins.  It provides excellent release, even in high humidity environments, with rubber, solvent acrylic and hot-melt adhesives.  Escoat RA-150W Release Coat may also be used as a water based over print varnish having good gloss, release power and a low coefficient of friction.

Material Description:            Aqueous Polyurethane Release Coat

Chemical Name:                    Aliphatic modified polyurethane aqueous dispersion

Empirical Formula:               [-OCO(CH2)2OCONH(CH2)6NH-]n

Molecular Weight:                [230.3]n

Physical Properties:             Appearance:                           Clear to slightly hazy liquid

Ionic Characteristic:                Anionic

Total Solids in %:                    25 ± 2

pH:                                          8.3 +/- 1.0

Water Solubility:                      Completely soluble

Specific Gravity (H20=1):       1.1

Brookfield Viscosity

(#1RV @100rpm):                  20-60 cps

Flash point:                             >100 °C (>212 °F) [Closed cup]

Mixing Instructions: 

Dilute with water and mix thoroughly to achieve desired solids concentration. Recommended applications solids concentration, usually in the range of 1.0 - 1.5% solids, is best determined by trial. Apply using Meyer rod, Anilox or Gravure rollers at 4-5 gm/m2. Dry coating thoroughly at between 80 to 100°C depending on web speed and oven efficiency before rewinding. No curing mechanism is required.

Advantages: 

  • Water based system.
  • Compatible with all standard adhesive systems.
  • Provides a controlled release effect.

Storage:

The shelf life of Escoat RA-150W Release Coat is at least 6 months when stored in securely closed containers in cool, dry storage locations. Despite a very good freeze thaw stability, it is advised to protect from low temperature (below 32°F). Stir before use.

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.

Additional Product Details: Please view our Escoat RA 150W PDF

Escoat WFX

Introduction:

Escoat WFX Release Coat is a non-silicone, acrylic water based emulsion, which provides consistent release characteristics for tape and label products.   Escoat WFX  has a consistent wetting and adhesion performance with PET and corona treated PE substrates.  Escoat WFX can be used on masking tape and other tapes where an aqueous coating is needed.

Material Description:            Acrylic emulsion polymer Release Coat

Chemical Name:                    Acrylate

Empirical Formula:               Proprietary Blend

CAS #:                                    Mixture

Molecular Weight:                Proprietary

Physical Properties:             Appearance:                           Liquid

Ionic Characteristic:                Nonionic

Solids Content:                        35-36%

Solvent:                                   63+% Water

pH:                                         8.0 +/- 1

Specific Gravity:                     ~1.1

Viscosity:                                 >200cps

Flash point:                              A/A (aqueous product)

Mixing Instructions: 

Depending on the type of substrate and pressure sensitive adhesive, the concentration of solid matter required should be determined by laboratory trial. Escoat WFX Release Coat diluted to between 2.0% to 5.0% solids will be adequate in most pressure sensitive applications. Some applications may require a higher solids concentration to assure complete surface coverage (crepe paper). Stir well before use.

Applications: 

Escoat WFX Release Coat is diluted in water to achieve application concentrations. Depending on the substrate and adhesive, the solids concentration should be determined by lab test. Recommended levels are between 2.0 - 25.0%. Some applications may require a higher solids concentration. Film substrates should be corona treated to ensure adhesion to the substrate. Coat at 4 - 5 gm/m2 (wet coat weight) using conventional coating methods with Meyer rod, Anilox or Gravure rollers. Coated substrate must be thoroughly dry before rewinding. No special “curing” is required as full release performance is achieved with mild heat drying.

Advantages: 

  • Offers an easy peel release. The smooth release properties are similar to PVODC release coatings.
  • Cost Efficient. Excellent release can be obtained using as little as 2.0% solids concentration, depending on film, adhesive, coating equipment and desired release levels.
  • Low temperature curing.
  • A glossy coating.
  • Inkjet and print receptive.
  • Can be used with aggressive solvent, hot melt or aqueous acrylic adhesives.
  • Tighter release performance versions are available for a) higher peel or unwind performance, and/or b) use with less aggressive adhesives, or c) for applications requiring only the inkjet/printability performance.

Storage: 

Keep away from fire and sunlight. Protect eyes and skin from direct contact and avoid inhaling. Do not store below 5°C or over 40°C. Keep container tightly closed. DO NOT ALLOW THIS PRODUCT TO FREEZE. It will no longer be usable.

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: 

Escoat WFX Release Coat does not have any approval for indirect food contact.

Additional Product Details: Please view our Escoat WFX PDF

Escoat WPX

Introduction:

Escoat WPX Release Coat is a non-silicone, carbohydrate polymer emulsion which provides a moderate release performance that is writeable and inkjet printable.   Escoat WPX coatings give a consistent release performance for various tape and label products, specifically bond paper, postal readdress labels, “Post-It” type packs for give away, coupons, prescription pads, and such.  The unique balance of release performance and inkjet receptivity is unmatched in release coat technology.  Variations of Escoat WPX are available for lower peel performance in the new “super sticky” type label pads.

Material Description:            A polysaccharide solution of a modified starch

Chemical Name:                    Modified starch

Empirical Formula:               Proprietary Blend

CAS #:                                    Mixture

Molecular Weight:                Proprietary

Physical Properties:             Appearance:                           Liquid

Ionic Characteristic:                Nonionic

Solids Content:                        50 +/-2 %

Solvent:                                   48+% Water

pH:                                         8.0 +/- 1

Specific Gravity:                     ~1.05

Viscosity:                                 ~200cps

Flash point:                              N/A (aqueous product)

Mixing Instructions: 

Depending on the type of substrate and pressure sensitive adhesive, the concentration of solid matter required should be determined by laboratory trial. Escoat WPX Release Coat diluted to between 12.0%
to 25.0% solids will be adequate in most pressure sensitive applications. Some applications may require a higher solids concentration. Stir well before use.

Applications: 

Escoat WPX Release Coat is diluted in water to achieve application concentrations. Depending on the substrate and adhesive, the solids concentration should be determined by lab test. Recommended levels are between 12.0 - 25.0%. Some applications may require a higher solids concentration. Escoat WPX coatings are designed for use on paper substrates only. Anchorage to any film substrates should be thoroughly tested before use. The coated substrate must be thoroughly dry before rewinding.

Advantages: 

  • Offers a low ATB and unwind value. The smooth release properties are similar to silicone release coatings and are valuable when used against the ‘microsphere’ acrylic adhesives typically used on low peel label applications.
  • Writeable and Inkjet printable.
  • Silicone free to avoid silicone contamination, or poisoning of the adhesives.

Storage: 

Keep away from fire and sunlight. Protect eyes and skin from direct contact and avoid inhaling. Do not store below 5°C or over 40°C. Keep container tightly closed. DO NOT ALLOW THIS PRODUCT TO FREEZE. It will no longer be usable.

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:

Escoat WPX Release Coat does not have any approval for indirect food contact.

Additional Product Details: Please view our Escoat WPX PDF