Eschem Inc.

Leon L Bildusas

Articles are provided that include pressure sensitive adhesive compositions which are especially suitable for forming contact bonds that are resealable at room temperature. Such adhesive compositions include a blend of a linear or a radial block copolymer, an end-block modifying resin compatible with the end or thermoplastic block of the copolymer and incompatible with the mid or elastomeric block, a plasticizing process oil compatible with the mid or elastomeric block; and, only if desired, not more than about 14 weight percent of a mid block or elastomeric block associating or modifying resin compatible with the mid or elastomeric block and incompatible with the end or thermoplastic block. Articles that particularly advantageously utilize these compositions are thin-walled storage or sandwich bag products made of a polyolefin or other film that has a releasable and resealable sealing strip. Others include peelable labels and note pads and dispensers for thin storage wrap products.

Resealable articles and process

Pressure sensitive adhesive compositions are provided that are especially suitable for forming contact bonds that are resealable to polyethylene surfaces at room temperature. Such adhesive compositions include a blend of a linear or a radial block copolymer, an end-block modifying resin compatible with the end or thermoplastic block of the copolymer and incompatible with the mid of elastomeric block, a plasticizing process oil compatible with the mid or elastomeric block, and, only if desired, not more than about 14 weight percent of a mid block or elastomeric block associating or modifying resin compatible with the mid or elastomeric block and incompatible with the end or thermoplastic block. A particularly advantageous utilization of these compositions is as a releasable and resealable sealing strip for thin-walled storage or sandwich bag products made of a polyolefin film.

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Aurora, IL, United States of America

Leon L Bildusas