Cartulina could be card or cardstock, but seeing as it¡s laminated, might be paper:

"The best example of a gloss laminated paper is in the form of a postcard. The main photo is on the front, along with a gloss laminate coat applied, which makes it even shinier. The back has the texture of plain card stock."

https://photography.tutsplus.com/articles/quick-tip-understa...

And trazado is explained here:
"TRAZADO DE TAPAS: junto con una buena y automatizada encuadernación, y luego de que las tapas sean impresas y terminadas con POLIETILENO BRILLANTE, el TRAZADO garantiza que podremos elegir el lugar exacto por el que se doblen las tapas sobre el lomo, y en las solapas."
http://www.editorialutopias.com/caracteristicas-tecnicas/

"Folding – Tracing (scoring)
Folding is possible for paper between 80g and 160g, beyond scoring or tracing is necessary to prepare the paper for folding. Tracing allows up to 9 parallel lines.
A number of folds can be generated automatically on our equipment:"
http://www.print-up.be/finishes.html?lg=EN_GB

Is It Possible To Fold Laminated Paper? - ABC Office
www.abcoffice.com/office.../11/is-it-possible-to-fold-lamin...
Nov 3, 2010 - Once a paper scoring machine has been used on laminated paper, there will be a long creased line along the document. This crease makes it ...


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Note added at 4 hrs (2017-02-01 16:09:52 GMT)
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More references:
"Doblado: Trazar previamente para lograr excelentes resultados.
Es un papel en el que una de las características más apreciadas es una muy buena rigidez (encarte) y por lo tanto se va a tender a quebrar al doblarlo (sobre todo en la dirección transversal a la fibra) si no se tiene esa precaución.
Es conveniente que la herramienta trazadora tenga un diámetro aproximadamente 30% mayor que el espesor del papel a marcar."
http://www.witcel.com.ar/finos/info.htm

"In the world of printing, Scoring refers to the process of making a crease in paper so it will fold easier.
Basically, a paper score is a ridge that is indented into the paper where the fold line will occur. This indention is made using a blunt metal edge – from either a wheel or a rule – that compresses the paper fibers to create a hinge-like area. This “hinge” is what allows for smoother folding.
Scoring also helps improve the appearance of the fold because it provides a consistent guideline as well as reduces the potential for the paper to buckle or crack. In addition, scored paper is less likely to cause harm to toner-type inks or thicker clear coats during the folding operation.
When is a Score used?
A score is generally used prior to folding heavy weight papers, such as cover weight papers, card stock and cardboard. In fact, the thicker the paper, the wider the score must be. Lighter weights of paper generally fold well without the need for scoring."
http://www.formaxprinting.com/blog/2010/09/printing-lingo-wh...