Cottrell Paper Company Products

COPACO

Copaco electrical insulation is 100% new cotton rag based

paper which has been produced since our founding in 1926. 

Copaco is a time tested product which is very durable,with

excellent physical test values giving it incredible wear and

tear resistance.

COPACO 125

Copaco 125 super stretch insulating paper has been

produced for over 40 years as an extensible version of

Copaco. The paper is produced in a mechanical process

that allows 20% stretch before breakage. This  stretch

allows it to absorb thermal and mechanical stresses. It

also features higher tear values than regular Copaco.

KRAFT

Cottrell Kraft is produced from only 100% virgin fiber low conductivity electrical grade pulp on a cylinder paper machine. A benefit of cylinder Kraft is that it has good tear resistance and the necessary elongation to allow sharp folds without splitting.

Kraft TU

Cottrell Kraft – TU is produced very similar to our Cottrell Kraft but the paper is thermally upgraded to improve the paper’s longterm thermal aging properties.

CK-125-TU

CK – 125 – TU is being produced as an extensible version of Kraft – TU.  The paper is manufactured under our extensible paper process that provides this material with up to 20% elongation.  This product is also thermally upgraded.  CK -125 – TU competes well with creped kraft papers and is currently available in .002” through .005”.

Cottrell 928 Presspaper

Cottrell 928 Presspaper is a blend of rag and Kraft fibers which offers an excellent combination of electrical/mechanical strengths.

Cottrell Fibre

Cottrell Fibre is produced using the same base rag fibers as our copaco which are then further enhanced to improve ply bond and stiffness with low water absorption characteristics.  Cottrell Fibre was developed to provide a domestic source for the applications where fishpaper and vulcanized fibre are clearly specified.  This material meets ASTM D-710 and MIL-I-695.

Cottrell Mat

Cottrell Mat is a 100 percent rag board made with only the finest cotton linter fiber.  The product is acid free (acid neutral), lignin free, and is buffered with calcium carbonate.  Cotton Rag mats are historically used by museums and galleries because cotton is naturally free of acid and lignins.  The best archival mats are made from 100% cotton rag.

Cottrell – HT

Cottrell – HT is made from 100% Para-Aramid pulp, which is an organic, industrial man-made fiber.  The sheet is made to Cottrell’s high standards and will not burn or melt at temperatures up to 200^o Celsius.

Pressboard

Cottrell Pressboards are produced from only 100% virgin fiber low conductivity electrical grade pulp on a cylinder paper machine. The pressboard is made with excellent elongation properties for various forming applications. Pressboard is widely used for barrier insulation, core insulation and spacing in transformers.

Specialty Papers & Boards

Our papers are used for many other non-electrical commercial and industrial applications. Below are just a few possible uses. We can assist you in selecting a material for other applications

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