Process for preparing a self-adhesive composition using a planetary extruder

A process for preparing a pressure sensitive adhesive using a modified planetary roller extruder (10) is described. The process in accordance with one aspect of the invention includes introducing primary raw materials including a non-thermoplastic elastomer into a feeding section (12) of the modifie...

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Bibliographische Detailangaben
Hauptverfasser:	Kovach, David Michael, Lombardo, Thomas, Tynan, John Kinch Jr, St. Coeur, Richard Walter
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL CHEMISTRY DYES MAKING GRANULES OR PREFORMS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL PAINTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POLISHES PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SPRAYING OR ATOMISING IN GENERAL TRANSPORTING USE OF MATERIALS AS ADHESIVES WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A process for preparing a pressure sensitive adhesive using a modified planetary roller extruder (10) is described. The process in accordance with one aspect of the invention includes introducing primary raw materials including a non-thermoplastic elastomer into a feeding section (12) of the modified planetary roller extruder (10), conveying the raw materials from the feeding section (12) to a compounding section (14) of the modified planetary roller extruder (10), continuously mixing the primary raw materials in the compounding section (14) to produce a homogeneous adhesive composition. The adhesive composition may be applied to a web-form material. The compounding section (14) of the modified planetary roller extruder (10) includes a main spindle (26) surrounded by and intermeshed with a plurality of planetary spindles (28, 30) at least one of which is a double transversal mixing spindle having a plurality of back-cut helical flights.