NOVELTY - High-flow interlayer (10) comprises poly(vinyl butyral) resin, and a mixture comprising: at least one plasticizer comprising of triethylene glycol di-(2-ethylhexanoate), triethylene glycol di-(2-ethylbutyrate), triethylene glycol diheptanoate, tetraethylene glycol diheptanoate, dihexyl adipate, dioctyl adipate, hexyl cyclohexyladipate, diisononyl adipate, heptylnonyl adipate or dibutyl sebacate; and epoxidized vegetable oil, where the interlayer comprises 15-100 parts of mixture per one hundred parts poly(vinyl butyral) resin.    USE - The high-flow interlayer is useful in a multiple layer panel (claimed) including a glass laminate, a photovoltaic module and solar panel.    ADVANTAGE - The high-flow interlayer utilizes epoxidized vegetable oil alone or in combination with a conventional plasticizer: which creates synergy allowing the flow of the interlayer to be increased without sacrificing properties associated with an increased flow (e.g. increased blocking and creep, exudation, surface roughness formation, decreased mechanical strength and decreased manufacturing capability), thus the epoxidized vegetable oil acts as a flow improvement agent resulting in a high-flow interlayer with improved flow properties; and which results in decreased processing and raw material costs for manufacturing of multiple layer glass panels, and increased efficiency and overall output.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) a multiple layer panel, comprising at least one rigid substrate, and the high-flow interlayer;    (2) an interlayer (L1) comprising a poly(vinyl butyral) layer comprising 60-100 parts of epoxidized vegetable per 100 parts poly(vinyl butyral) and having a glass transition temperature of less than or equal to 10degree C; and    (3) an interlayer (L2) comprising a poly(vinyl butyral) layer comprising 2-20 parts of epoxidized vegetable per 100 parts poly(vinyl butyral) and having a glass transition temperature of greater than or equal to 35degree C    DESCRIPTION OF DRAWING(S) - The figure depicts an interlayer comprising epoxidized vegetable oil placed between two warped substrates to form a multiple layer glass panel.    Substrate (10)    High-flow interlayer (11)