Hot-melt webs, laminates, and laminate making method
AssigneeTDK Corporation
InventorYuichi Kubota
Life of this patent
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Abstract
A hot-melt web has a buffer adhesive layer of a thermosetting resin on a light transmissive, heat resistant resin support. The hot-melt web has the advantages of light transparency, heat resistance, weather resistance, controlled entrainment of bubbles and easy removal of bubbles during thermocompression bonding, provides a sufficient bonding force, and effectively corrects random deformations of a module sheet. The hot-melt web is suitable for use in the bonding, joining and laminating steps in the manufacture of optical discs such as DVD and flat panel displays, is easy to eliminate bubbles, and is effective for improving the quality of an associated product. A laminate using the hot-melt web and a method for preparing the laminate are also provided.
Claims16
A hot-melt web comprising
- a support of a light transmissive, heat resistant resin and
- a buffer adhesive layer containing a thermosetting resin and an organic peroxide blended therewith, on at least one surface of the support.
A laminate comprising a member and a hot-melt web laid thereon, wherein said member is an optical disc, flat panel display or solar array, wherein said hot-melt web comprises
- a support of a light transmissive, heat resistant resin and
- a buffer adhesive layer containing a thermosetting resin on at least one surface of the support, wherein said buffer adhesive layer further contains an organic peroxide.
A method for preparing a laminate comprising the steps of:
- passing a hot-melt web and a member through a roll laminator for effecting thermocompression bonding to form a composite laminate, said hot-melt web comprising a buffer adhesive layer on at least one surface of a support of a light transmissive, heat resistant resin, with the buffer adhesive layer being in contact with the member,
- cutting the composite laminate into sections, stacking the laminate sections, and placing the stack of laminate sections in a container, and
- heating and hydrostatic pressing the stack for achieving thermosetting and bubble removal, wherein the buffer adhesive layer of said hot-melt web contains a thermosetting resin and an organic peroxide blended therewith.
Dependencies are inferred from the claim text.