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AssigneePlantics Holding B.V.
InventorsMartinus Mathilda Pieter Zieverink, Beer Holthuis, Wridzer Jan Willem Bakker
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The invention pertains to a process for manufacturing a shaped object through a winding process comprising the steps of —winding resin-containing fiber under tension to form a shaped fibrous object, the resin comprising at least 50 wt. % of polyester derived from an aliphatic polyol with 2-15 carbon atoms and an aliphatic polycarboxylic acid with 3 to 15 carbon atoms, calculated on the polymer constituents of the resin, —subjecting the shaped fibrous object to a curing step. In one embodiment, the resin-containing fibers are provided through a process comprising the steps of —contacting fiber with a liquid resin composition, the resin composition comprising polyester derived from an aliphatic polyol with 2-15 carbon atoms and an aliphatic polycarboxylic acid with 3 to 15 carbon atoms, to obtain resin-containing fibers, —subjecting the resin-containing fibers to a drying step, the drying step being carried out until the resin-containing fibers are tacky and the resin-containing fiber has a diluent content of at most 25 wt. %, calculated on the weight of resin composition in the resin-containing fiber. Tacky fibers obtainable by this intermediate process are also claimed, as is the shaped fibrous object that can be obtained by the process according to the invention.
A process for manufacturing a cured shaped object through a winding process comprising steps of
Resin-containing fibers comprising a resin composition comprising a resin comprising at least 70 wt. % of polyester derived from an aliphatic polyol with 2-15 carbon atoms or a mixture of aliphatic polyols with 2-15 carbon atoms and an aliphatic polycarboxylic acid with 3 to 15 carbon atoms or a mixture of aliphatic polycarboxylic acids with 3-15 carbon atoms, the fibers being tacky and having a diluent content of at most 25 wt. %, calculated based on a weight of the resin composition in the resin-containing fibers.
A shaped fibrous object comprising wound resin-containing fibers, wherein the resin of the resin-containing fibers comprises at least 70 wt. % of a polyester derived from an aliphatic polyol with 2-15 carbon atoms or a mixture of aliphatic polyols with 2-15 carbon atoms and an aliphatic polycarboxylic acid with 3 to 15 carbon atoms or a mixture of aliphatic polycarboxylic acids with 3-15 carbon atoms, the polyester having an extent of polymerization, which is a ratio of a fraction of functional groups that have reacted to a maximum of those functional groups that can react, of at least 0.8.
Dependencies are inferred from the claim text.