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MITRA Forum Question Details

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    Question asked 2018-01-17 11:40:07 ... Most recent comment 2018-01-17 20:00:28
    Rigid Supports Sizes and Adhesives

    Would a pva glue with a ph of 4 be suitable to mount primed linen to hardboard?​

Answers and Comments

  • EditDeleteModerator Answer

    That is rather acidic and would likely cause some degree of acid hydrolysis. There are PVA sizes that are buffered to be neutral. Two of them are Lineco pH Neutral adhesive and Gamblin’s PVA size. Acrylic dispersion gel mediums are also good choices. We discuss the subect more fully in our Adhesives and Sizes  downloadable PDF found on this page

    Brian Baade
    2018-01-17 13:08:44
  • EditDeleteModerator Answer

    I really like Acrylic Gloss Gel Medium for this application. I coat the fabric and panel separately in advance and allow both to dry before mounting with an adhesive coat of gel. (Fabric is stretched for sizing.) This way, I can mate two acrylic-coated surfaces for an excellent bond with very little shrinkage of the fabric. On the rare occasion any blisters or unbonded corners develop, a warm iron tacks down the loose bits once the adhesive is dry. 

    Matthew Kinsey, Utrecht Art Supplies
    2018-01-17 20:00:28

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