The Scarborough News understands several members of staff from the Thornburgh Road factory in Eastfield tested positive for the disease last week.
The firm declined to confirm how many members of staff have been affected.
Managing Director Peter Greaves said: “Unfortunately, a number of staff within one part of the Scarborough factory tested positive for coronavirus last week.
“Throughout the pandemic, the business has implemented all the appropriate measures to keep staff safe and up until this point in time, the impact of Covid-19 amongst staff was minimal.
“As soon as the potential outbreak was identified, the Company took advice from North Yorkshire County Council and Public Health England and has kept in regular contact with them throughout the current period.
“Staff in affected areas have been given appropriate advice regarding testing and self-isolating and it is hoped that there will be no further cases identified.
“Our thoughts are with those staff affected and we continue to offer them our support as appropriate.”