The Polaroid Eyewear factory in West Dunbartonshire has been slated for closure putting more than 100 jobs at risk.

The plant in Vale of Leven is unsustainable, according to Italian parent company Safilo.

The factory which employs 107 staff could close its doors in 2017 after operations transfer to China.

Luisa Delgado, chief executive of Safilo, said: “We believe, with regret, that the current supply chain could not support the global brand expansion in a sustainable way.

“Polaroid needs modernised production technology and optimised costs with simpler logistic flows to ensure it is sustainable.

“We will continue to give support during this transition period as best as we can.

“We would also like to take this opportunity to thank our organisation in Vale for their dedication over the years and for their important and continuing contributions while we progress with the consultations.”

A spokeswoman for West Dunbartonshire Council confirmed the potential closure, describing it as “sad news”.

She said: “Our priority now is to meet senior staff at the plant this week and provide all the help required to support the workforce to find alternative employment and training opportunities.

“The Council’s Working4U and Working4business services will work with Skills Development Scotland, DWP and West College Scotland to offer advice and support in work coaching and CV development to assist the staff to find alternative employment.

“We can also offer to review employee’s qualifications and skills and help them access further education. Council staff will also offer debt management and benefit advice to assist the employees.

“In addition, we can explore opportunities with individuals and groups to offer support and advice through Business Gateway to anyone who would like to start their own business.”

The plant opened in 1965 and once employed 5,000 people.

Jackie Baillie, Labour MSP for Dumbarton, said: “This is a devastating blow for West Dunbartonshire and to those who are facing redundancy.

“Polaroid has been a key part of the local economy for many years. I will be seeking an urgent meeting with the company and trade unions.”

Business Minister Fergus Ewing added: “Scottish Enterprise is engaging with the company's management team to explore all possible options for supporting the business and retaining jobs in Dumbarton.

“The Scottish government's PACE initiative stands ready to offer support for any affected employees.”