The present invention comprises a single-component binder for heat-sealing applications which can be used for the sealing of polyester foils, in particular of polyethylene terephthalate foils (PET foils) with respect to containers made of polystyrene, of PVC, and of polyester. These polyesters can in particular be polyethylene terephthalate (PET) or polylactic acid (PLA). The binders here feature not only good seal seam strengths but also in particular good transparency and excellent application properties. A substantive aspect of the invention is that the sealing can be achieved without addition of adhesion promoters, in particular without addition of adhesion promoters based on polyvinyl chloride (PVC) or on polyester, and that barrier properties and sealing properties achieved in respect of containers made of PS and of PET are nevertheless at least comparable with, and sometimes better than, those achieved with heat-sealing systems already marketed.

The present invention involves a 100% solids, radiation curable adhesive formulation for adhesion to EVA. This formulation may have varying compositions, as discussed in detail herein. However primarily the composition may comprise at least a monomer, and a chlorinated additive. Photo initiators may be used to allow for low temperature UV or other radiation curing. Other additives may be used to enhance functional features in various ways. In use, the present invention may be coated on a surface of EVA and then cured, and may be adhered to a substrate using only a layer of adhesive on the substrate, in contrast to the structures of the prior art, which require at least two sided adhesive application, among other complexities.

An embodiment of the present invention provides an electrical steel sheet including: an upper adhesive layer positioned on an upper surface of an electrical steel sheet; and an lower adhesive layer positioned on a lower surface of the electrical steel sheet, wherein the upper adhesive layer has a pencil hardness of F or lower, and the lower adhesive layer has a pencil hardness of H or higher.

Embodiments of the disclosure relate to a blister package having a laminate structure that is heat-sealable to a lacquer layer on strain-hardened aluminum foil. The blister package includes a lid layer comprising a strain-hardened aluminum foil, a lacquer layer on a sealing surface of the strain-hardened aluminum foil and a laminate structure sealed directly to the lacquer layer. The laminate structure includes a multilayer film and a plurality of wells formed therethrough. The multilayer film includes a first formable layer of a thermoplastic material and a sealing layer of a copolyester material. The sealing layer overlies the first formable layer and has an outer surface opposite the first formable layer. The sealing layer has crystallinity from 5% to 20% as measured by differential scanning calorimetry (DSC). The outer surface of the sealing layer is sealed directly against the lacquer layer.

An adhesive formulation such as a hot melt adhesive or a pressure sensitive adhesive is provided comprising 5 to 98% (by weight) biodegradable substantially non-crystalline mcl-PHA. The mcl-PHA may be cured with a peroxide curing agent. The adhesive formulation may include an additional biodegradable polymer, or a non-biodegradable thermoplastic elastomer. Hot melt adhesives comprising significant amounts of biodegradable mcl-PHA, waxes, and tackifiers are also provided.

A method for manufacturing a pressure-sensitive self-adhering adhesive is based on an alkoxylated silane-containing polymer, to which is added at least one tackifying resin compatible with the alkoxylated, silane-containing polymer, and at least one catalyst (K). To overcome various disadvantages of the prior art, such as a too-slow or excessively violent reaction of the alkoxyl groups, and the need for an additional supplying of water, the alkoxylated silane-containing polymer is crosslinked using a catalyst (K) that comprises a Lewis acid-base adduct, wherein the Lewis acid (LS) is a reaction-inhibited cation at least in the temperature range below 60° C., and the Lewis base (LB) is an anion of a very strong acid. In a preferred embodiment the Lewis acid (LS) is an organyl-group-containing (AG) halogen-onium cation, and the Lewis base (LB) is the anion of a superacid.

A curable resin composition includes: a first epoxy resin having a polyoxyalkylene chain; a second epoxy resin different from the first epoxy resin; a thermoplastic resin having a weight average molecular weight of 300,000 or less, and having a reactive functional group; at least one selected from the group consisting of a curing agent and a curing accelerator; and an inorganic filler.

The invention provides a laminated polyester film that is highly transparent, is resistant to blocking, and has excellent adhesion to a hardcoat layer and UV ink. The laminated polyester film contains a polyester film substrate and a coating layer on at least one surface of the polyester film substrate, wherein the coating layer is formed by curing a composition containing a urethane resin with a polycarbonate structure and a branched structure, a crosslinking agent, and a polyester resin.

A method of preparing thermoplastic polyester elastomer membrane with high binding strength includes the following steps: (a) Adding a reaction solvent to TPEE powder or granules to prepare a solvent mixture, (b) Adding a modifier to the solvent mixture, and mixing uniformly to prepare a first mixture, the modifier including at least one of o-xylylenediamine, m-xylylenediamine, alpha,alpha′-diamino-p-xylene, 2,3,5,6-Tetrachloro-p-xylene-alpha,alpha′-diamine, and 1,3,5,7-Tetraazatricyclodecane. (c) Adding an initiator to the first mixture, and mixing uniformly to prepare a second mixture, (d) Obtaining a finished product by passing the second mixture through an injection laminating process.

A method of preparing self-adhesive polyester elastomer composite membrane includes the following steps. Adding methyl formate or ethyl acetate to thermoplastic polyester elastomer (TPEE) powder or granules and mix well. Adding a modifier and adding a photo initiator or a thermal initiator, and then mixing uniformly to prepare a mixture. Drying the mixture to prepare a polyester elastomer membrane through an injection laminating process. Preparing pressure sensitive adhesive. Pasting the pressure sensitive adhesive on one side of the polyester elastomer membrane.