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SF9350A/SF9350BHT fast curing, low friction coefficient, 121℃ retorting grade

  • 01Description

    SF9350A/SF9350BHT is a high strength 2-component solvent-free polyurethane adhesive that can be fully cured to form an elastic film with good bonding strength and heat-sealing strength. It can withstand 121℃/30min high temperature retorting in structure of polymer/polymer film. After mixing, it has the advantages of long storage time, easy operation and easy cleaning; it will not affect the release of PE film slipping agent, and thus has excellent smoothness.
  • 02Performance characteristics

    Widely used in laminating of various treated film like BOPP, VMCPP, CPP, LDPE, PET, PA etc.Solvent free, reduce the production cost, avoid the problem of the residual solvent, improve the working environment, effectively reduce the pollution and the risk of fire Excellent performance of machining, High speed laminating process, Lower coating weight, greatly decline the production cost; without drying section, save the cost of energy; without solvent, save the cost of materialIncombustible, avoid the risk of fire accident. Without the solvent, be unharmful to the workers . Available to operate in room-temperature , easy to clean
  • Health norms

    Health norms

    OCHEM SF9350A/SF9350HT 2-component solvent-free polyurethane adhesive are in compliance with the positive lists of the following, internationally accepted guidelines for the production of articles intended to come into indirect contact with food stuff.

    - EU RoHS directive (EU) 2015/863 amending Annex II to directive 2011/65/EU

    - CFR, title 21, § 175.105 of the FDA, Washington D.C., respectively

    - Regulation (EC) No 1907/2006 concerning the REACH

     

    As an indirect contact material in food and drugs packaging industry, OCHEM SF9350A/SF9350HT are definitely suitable to make the film laminating for food packaging and doesn’t contain any noxious, destructive and harmful material to human health.

     

  • Product specifications

    Product specifications

    Item

    SF9350A

    SF9350BHT

    Type

    Hardener

    Main agent

    Ingredient

    NCO

    OH

    Appearance

    Yellowish transparent liquid

    Yellowish transparent liquid

    Density(g/cm3

    1.25

         1.11

    Solid Content(%)

    100%

    100%

    Viscosity (BKF25)

    2250±750cps

    1100±500cps

  • Operating conditions

    Operating conditions

    Recommended Operating Conditions

    1 The adhesive should be used up in laminator within 40 minutes after 2-components mixed.

    2 SF9350A:SF9350BHT recommended mix ratio is 100:75 and volume ratio is 100:84.5. The mix ratio can be from 100:60 to 100:85. Please choose the suitable mix ratio according to operation environment.

    3 It is recommended to use at 30°C to 40°C or room temperature (25℃). According to different operation requirements, the recommended usage amount is 1.0-2.5g/m2, please find following different recommended usage amounts in laminations of different films structures.


    Type

    Films Laminating Structure

    Usage Amount

    Mix ratio

    Two layers laminating

    Plain films:BOPP/CPP,BOPP/PE,PET/PE,NY/PE,   PET/CPP

    1.0-1.3 g/ m2

    100:75

    Printed films:BOPP/PE,BOPP/CPP,PET/PE,PET/CPP

    1.2-1.6 g/ m2

    Boiling grade films:NY/PE,PET/CPP

    1.4-1.8 g/ m2

    Retorting Grade:

    1.8-2.2 g/ m2

    Multi-layer laminating

    VMPET/PE,VMPET/CPP

    1.4-1.6 g/ m2

    100:65--75

    AL/PE

    1.4-1.6 g/ m2

    Aluminized structures

    BOPP/YYVMPET

    1.4-1.6 g/ m2

    100:75-80

    BOPP/VMCPP,BOPP/VMPET

    1.4-1.6 g/ m2

    Note: The above is for reference only, please adjust according to the actual situation (film thickness, ink area, temperature and humidity of the workshop, equipment status).


    Laminating Temperature: please find following different recommended operating temperatures in different processing sections.


    Item

    Temperature

    Remark

    A Component

    40-45

    When the temperature is low in winter, the temperature can be appropriately   increased

    B Component

    30-38

    Feeding Tube

    40

    Please make adjustments according to the actual situation. For example,   when high frictional coefficient films are required or PE film is required to   be relatively thin in second laminating, the laminating temperature can be   properly reduced, and the cooling roll can be opened if possible.

    Transfer Roller

    40

    Coating Roller

    40

    Laminating

    45

    Curing Chamber

    40

    Curing time

    >48 hours

    The special structures have to be curing for longer time, such as   boiling grade, retorting grade, etc. The actual requirements shall prevail.

    Note: When the temperature is low in winter, the adhesive should be put into the curing room in advance for more than 4 hours. To ensure a suitable operating environment, please pay attention to the environmental temperature and humidity in the summer, the moisture absorption of the film, and solvent residual of the printed film, etc. Otherwise, it is easy to lead the adhesive sticky and other problems, the operating humidity should not exceed 80%. When the humidity is low in winter, the mix ratio should be properly adjusted.



    Cleaning

    After production, the surface of the device is cleaned with a suitable solvent to prevent it from being hard to clean after curing.





  • Packing specifications

    Packing specifications

    Packed in steel drum normally. A-component is 200kg/barrel. B-component is 150kg/ barrel.

  • Store

    Store

    This product should be stored in the room without direct sunlight at temperature 15-25 °C,  shelf life would be 6 months in unopened drums, it should be used as soon as possible after drum opened.


  • Special instructions

    Special Instructions

    When laminating different types of ink or transparent ink film, it is necessary to confirm whether it is suitable


    When laminating PET printed film, confirm whether the appearance meets the requirements or not


    If the contents of the package are corrosive, please confirm and start production


    In actual production, if other types of Ochem solvent-free adhesive are replaced, the cylinder, pipelines and rollers may not be cleaned. If solvent free adhesives other than Ochem adhesives are replaced, the user must perform thorough cleaning of the feeding system.


    Please stop using adhesive and then contact us when you find that the adhesive has become turbid or there is agglomeration.

     

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