Flextra® SFA 8300 + XR 1705

Identification

GBU

HHC

RTU Product Type

2K (2 component) Adhesive,

Solvent free (100% Solids) Adhesive,

Solventborne Adhesive,

Waterborne Adhesive,

Polyurethane (PU) Adhesive

Categories

Markets → Printing & Packaging → Applications → Packaging → Food & Beverage Packaging

Markets → Printing & Packaging → Applications → Tapes, Labels & Adhesives → Flexible Packaging Adhesives

Technologies → Adhesives & Sealants → Product Families → Bonding Technology → Solvent-Based Nonreactive Adhesives

Technologies → Adhesives & Sealants → Product Families → Bonding Technology → Solvent-free Adhesives

Technologies → Adhesives & Sealants → Product Families → Bonding Technology → Water-Based Adhesives

Applications

Application Area

Foils

Compatible Substrates & Surfaces

Polyesters,

Nylon,

Polypropylene (PP),

Polyethylene (PE),

Ethylene Vinyl Acetate (EVA),

Polyolefins,

Aluminum Foils

Applications & Uses

Cleaning Method

• If the laminator stops for more than 30 minutes the rollers must be cleaned. Using ethyl acetate with addition of approx. 20% Triacetin (Glycerol triacetate) as a cleaning solvent is recommended. We recommend using ethanol for final cleaning, especially for the rubber roller. Precautions listed in the material safety data sheet of the solvent must be followed.

Combining Information

Increased temperature of the nip roller improves wetting and transparency of the laminates. Depending on kind of laminated films and machine speed nip temperatures of 40°C – 75°C are recommended.

Processing Information

• SFA 8300 + XR 1705 should only be used on laminators which are designed for solvent free adhesives.
• For regular production using an automatically working mixing unit is strongly recommended.
• For a test run both components can be mixed with an agitator before pouring into the dosing gap of the laminator. This amount of pre-mixed adhesive should be consumed within 20 – 30 minutes.

Product Applications

• SFA 8300 + XR 1705 is suitable for lamination of printed and unprinted, transparent, metallized, and aluminium foil containing structures. SFA 8300 + XR 1705 can be used for lamination of aluminium foil, polyester, coated cello, nylon, polyethylene, oriented and Cast-polypropylene.
• Structures laminated with SFA 8300 + XR 1705 show after curing high bond strength and good heat resistance. SFA 8300 + XR 1705 is suitable for lamination of olefin films with high content of slip additive (500 ppm erucamide calculated on 70μ film thickness).
• Suitability of SFA 8300 + XR 1705 for the lamination of EVA films and white polyethylene must be tested by the converter.

Features

Ready-to-Use Product Features

Very Good Heat Resistance,

High Bond Strength

Packaging & Availability

Regional Availability

• Global

Properties

Additional Information

It is recommended that the converter does his own lamination trials and tests of the resulting laminated structure because additives, especially out of polyolefin films and printing inks, can affect the properties of the structure immediately or later. For olefin films corona-pre-treatment is necessary. Corona-pre-treatment of polyester- and nylon-films improves wetting and adhesion.

Cross Linking Properties

The cross-linking reaction starts immediately after lamination, rewind and slitting is normally possible after 8 hours. Best chemical resistance is achieved 6 to 8 days after lamination at ambient temperature. Storage of laminated material at increased temperature (40°C – 50°C) may cut down curing time to approx. 4 days.

Component B

	Value	Units	Test Method / Conditions
Solids Content	100	%	-
Specific Gravity	1.15	-	-
Viscosity (at 25°C)	900 - 1700	mPa.s	-

Component A

	Value	Units	Test Method / Conditions
Solids Content	100	%	-
Specific Gravity	1.2	-	-
Viscosity (at 25°C)	8000 - 18000	mPa.s	-

Typical Properties

	Value	Units	Test Method / Conditions
Coat Weight (printed film/film-laminates, standard)	1.8 - 2	g/m²	-
Coat Weight (problematic structure: aggressive packed goods)	2 - 2.2	g/m²	-
Coat Weight (unprinted film/film-laminates, standard)	1.5 - 1.8	g/m²	-

Specifications

	Value	Units	Test Method / Conditions
Coating Roller Temperature	35 - 60	°C	-
Dosing Roller Temperature	30 - 45	°C	-
Mix Ratio (by volume)	100:104	-	-
Mix Ratio (by weight)	100:100	-	-
Mix Viscosity (at 40°C)	approx. 1200	mPa.s	-
Mixing Unit Temperature	ambient to 50	°C	-
Nip Roller Temperature	ambient to 75	°C	-

Application Properties

	Value	Units	Test Method / Conditions
Cure Time	approx. 4	days	-

Regulatory & Compliance

Food Contact Status

SFA 8300 + XR 1705 can be used to produce flexible packaging material intended for use in food packaging. Detailed information on specific regulations is available upon request.

Safety & Health

Safety Instructions

SFA 8300 + XR 1705 contains monomeric MDI (>2%) and should be processed at temperatures above +40°C only with special precautions to be taken in handling (follow material safety data sheet).

Storage & Handling

Storage Conditions

The product SFA 8300 + XR 1705 maintains its stability in an unopened original container until the shelf-life date indicated on the product label. Once opened, the containers – especially SFA 8300 – must be used within 24 hours. Opened containers should be well closed again.

Technical Details & Test Data

Application Temperatures

• Mixing Unit :  ambient – 50°C
• Dosing roller :  30 – 45°C
• Coating roller : 35 – 60°C
• Nip roller : ambient  – 75°C

Coating Weight

• Unprinted film/film-laminates, standard : 1.5 – 1.8 g/m²
• Printed film/film-laminates, standard : 1.8 – 2.0 g/m²
• Problematic structure (aggressive packed goods) : 2.0 – 2.2 g/m²