Only those who work carefully right from the start will be rewarded with good quality in the end. This is why our efforts start right where our products originate: in Portugal, the number one cork producer in the world. Almost alone among cork suppliers, Gültig operates its own quality-controlled manufacturing sites in Portugal. Quality control begins with the purchase of cork bark to rigorously ensure that only highest quality raw material enters into the production stream.
Each further step of the treatment of the wood is accompanied by exacting quality control procedures.
This starts with the careful boiling of the bark, followed by cutting it into strips and then punching out the corks one-by-one. Washing, bleaching and sterilization; then drying and grading the corks into Gültig’s standard grades follow. By combining the latest technology, strict Gültig quality standards and our many years of experience, a high quality cork stopper is created in Portugal. Only the highest quality corks find their way to Heilbronn for further processing which includes branding, dedusting and coating. The moisture content of the corks is adjusted in accordance with each customer’s specific needs.
Finished corks are packed in polyethylene bags and sealed with SO2. This sterilization method - developed by Gültig and now the international standard - keeps the stoppers wine sterile, protected and ready-to-use for months. A worldwide sales network makes Gültig products available to customers on all continents.
Founded in 1953, Gueltig Corks developed the first “sterile cork” by sealing its product in plastic bags dosed with SO2.
Gueltig initiated and sponsored the very first research into cork taint resulting in the identification of TCA as a major component (1983).
Gueltig was the first cork manufacturer to launch a "chlorine free" natural cork, significantly reducing the risk of TCA.
Since 2000, all production of natural corks is strictly controlled with the use of in-house GC/MS (gas chromatography–mass spectrometry) equipment, adhering to QC procedures in accordance with ISO 9002, HACCP and Geisenheimer Prüfsiegel.
Gueltig is also certified by the FSC (Forest Stewardship Council) for supplying natural corks from responsibly managed forests.
Gueltig permanently invests in the future of its products.
Answers to the challenges of quickly changing markets are found within our own R&D department, as well as, cooperating with specialized institutes in Germany and abroad.
For recent innovations, please refer to "What's New".
Gueltig Cork: Leading The Way In Sustainable Cork!
25 March, 2013
Gueltig proudly introduces its Bioconcept natural cork to the West Coast. The Bioconcept cork is FSC (Forest Stewardship Council) certified and is the ideal cork for the environmentally conscious winery.
The corkwood is taken exclusively from well defined areas of FSC certified forests,
which ensures sustainable management of natural resources. The FSC quality certificate
allows complete traceability. The raw material is subjected ...