Lamination

  • * The optimum conditions vary depending on the companion materials that are to be laminated, so please investigate before proceeding.

YUPO/YUPO, Non-absorbent material/YUPO

  1. 1. Roll/roll laminates
    • Dry lamination is appropriate. we recommend a two-component adhesive. To prevent curling, pay attention to the tension balance, and when using with sheets, trim before they are completely hard.
    • Sandwich lamination of LDPE, and so on, is possible, but thermal contraction may occur, so pay attention to the management of cooling rolls. When a strong lamination bond is required, apply a primer coat (AC coating) to YUPO beforehand.
  2. 2. Roll/sheet laminates (print laminates)
    • * When laminating film (PP, flexible PVC, or PET) on printed YUPO sheets
    • we recommend a two-component adhesive. Preventing curling
      1) Minimize the tension of the roll film as much as possible.
      2) After laminating, turn the film so it is facing upwards, and cut it after rectifying the curl.
    • For PP laminates, it is possible to use a PP film
      (such as Lamitack) that has been coated with a hot melt adhesive beforehand. (A pre-test is required for outdoor applications and applications near water.)
  3. 3. Sheet/sheet laminates (hot-press lamination)
    • *When laminating rigid PVC sheets to printed YUPO sheets,
    • we recommend a two-component adhesive. Apply the adhesive to the PVC sheet.
    • The press temperature is generally between 100℃ and 120℃. If the temperature is unnecessarily high, problems may occur with size due to the contraction of YUPO. To prevent curling and changes in dimensions after apply a hot press, continue applying pressure (cooling press) until YUPO returns to room temperature.
    • When laminating YUPO for oil-based offset printing with a hot press, check the degree of ink drying beforehand. (If you laminate when the ink is not sufficiently dried, ink bleeding may occur.)
    • *SUPERYUPO (FRB [G]/FRR [G]) cannot be hot press laminated. (Due to weak adhesion to the laminate)

YUPO/absorbent material

  1. 1. Plywood lamination

    Although emulsions such as modified PVA and EVA can be used as adhesives, when a strong adhesion is required, we recommend a two-component hardening adhesive.

  2. 2. Lamination with absorbent materials with low rigidity (paper)

    We don't recommend this because there is a significant chance of curling occurring after lamination.
    However, in cases where it is possible to prevent curling, emulsions such as modified PVA and EVA can be used as adhesives. Dry lamination is also possible.