摘要:
The invention relates to the field of adhesive tapes, and particularly to adhesive tapes which can be split, for the purpose of the adhesion and the encapsulation of surfaces that are sensitive to permeate. In particular, the invention relates to a method for producing an adhesion using an adhesive tape section that can be split and, in particular, stored, and comprises (iii) at least one adhesive layer that can be split, is provided on at least some sections of the surface, and has a complex viscosity of less than or equal to 10 5 Pa s measured according to ISO6721-10 at 23°C and a frequency of 1 rad/s, and that comprises at least one settable liquid adhesive. The aforementioned splittable adhesive tape section, the adhesive tape section that has been split at least once and comprises an adhesive layer split at least once and reduced in layer thickness, and said adhesive layer that has been split at least once, are all provided for the purpose of the multiple adhesion and encapsulation of permeate-sensitive surfaces, preferably, for example, those of optoelectronic arrangements. The invention also relates to a method for producing a barrier layer.
摘要:
The aim of the invention is to improve the barrier effect of an adhesive strip for encapsulating electronic arrangements against permeates, in particular water and oxygen. This is achieved by providing a composite system for encapsulating electronic arrangements which comprises at least (a) an adhesive strip containing at least one pressure-sensitive adhesive substance for direct application on a substrate; and (b) at least one release liner which lies directly upon the pressure-sensitive adhesive substance, the surface of the release liner that faces the pressure-sensitive adhesive substance having a surface roughness of less that 100nm, measured as an arithmetic mean S a as per ISO/FDIS 25178-2:2011 of the amounts of at least 10,000 height values of the profile of a partial surface of at least 200µm x 200µm. The invention further relates to a method for producing a release liner with a smooth surface, the use of such a release liner for equipping barrier adhesive strips and the use of an adhesive strip obtained from the composite system as per the invention by removing the liner in order to encapsulate electronic arrangements.
摘要:
The invention relates to an adhesive substance, in particular for encapsulating an electronic assembly against permeates, said substance comprising: (a) at least one copolymer containing at least isobutene or butene as comonomer types and at least one comonomer type which, when regarded as a hypothetical homopolymer, has a softening temperature greater than 40°C; (b) at least one type of an at least partially hydrogenated adhesive resin; (c) at least one acrylate- or methacrylate-based type of reactive resin with a softening temperature less than 40 °C, preferably less than 20°C; and (d) at least one type of photoinitiator for initiating radical curing.
摘要:
The invention relates to a method for protecting an electronic arrangement which is disposed on a substrate and comprises organic constituents, where a cover is applied to the electronic arrangement in such a way that the electronic arrangement is at least partly covered by the cover, the cover being bonded at least over a partial area to the substrate and/or to the electronic arrangement, the adhesive bond being produced by means of at least one layer of an adhesive in an adhesive tape, characterized in that the adhesive comprises a getter material which is capable of sorbing at least one permeable substance, the getter material being present in the adhesive in a proportion of not more than 2 wt%, based on the adhesive with the getter material.
摘要:
In a liner for protecting adhesive compounds, the protective action with respect to permeates originating from the surroundings and also with respect to permeates included during winding or stacking and other processing steps is to be improved. This is achieved by providing a liner which has at least one non-stick release layer and at least one getter material that is able to absorb at least one substance capable of permeation, wherein the getter material is contained as a dispersed phase in at least one layer of the liner.
摘要:
The present invention relates to the field of adhesive tapes, more particularly to that of cleavable adhesive tapes, for the adhesive bonding and encapsulation of permeate-sensitive surfaces. Specifically the present invention relates to a cleavable adhesive tape which can be kept in storage and which comprises (i) at least one backing layer, (ii) at least one outer layer and (iii) at least one adhesive-bonding layer which is present on at least part of a surface and which has a complex viscosity smaller than or equal to 1000 Pas, measured in accordance with ISO 6721-10 at 23°C and at a frequency of 1 rad/s, comprising at least one hardenable liquid adhesive. The present invention further relates to the provision of the multiply cleavable adhesive tape described, and also of an adhesive tape which has been cleaved at least once, with an adhesive bonding layer that has been cleaved at least once and that has reduced thickness, and also to the, more particularly multiple, use of the adhesive tapes, preferably of the cleavable and/or cleaved adhesive-bonding layers, more particularly for the adhesive bonding and encapsulation of permeate-sensitive surfaces, preferably of optoelectronic arrangements.