Method for producing creped paper

Details Method for producing creped paper Method for producing creped paper

D - Textiles, Paper

21

H

D21H 21/14 (2006.01)

Patent

CA 2563934

The invention relates to a method for producing crêped paper by gluing a paper web to a crêping cylinder with the aid of an adhesive. Said adhesive consists of: (i) a polyethylene imine with a molar mass Mw of between 50,000 and 2 million, (ii) products of a reaction between polyethylene imine with a molar mass Mw of between 500 and 1 million and at least one C14 to C22 alkyldiketene, a monocarboxylic acid, a monocarboxylic acid ester or a monocarboxylic acid chloride and/or (iii) products of a reaction between polyalkylene polyamines with a molar mass of between 300 and 1 million and at least one dichlorohydrin ether or diglycidyl ether of a polyalkylene glycol with a molar weight M<SB>N</SB> of between 300 and 3000. The paper is then compressed and the crêped paper is removed. The invention also relates to the use of the adhesives (i) to (iii) as auxiliary agents in the crêping process.

L'invention concerne un procédé de production de papier crêpé. Ce procédé consiste tout d'abord à coller une bande papier sur un cylindre de crêpage à l'aide d un agent adhésif contenant (i) une polyéthylènimine ayant une masse molaire Mw de 50 000 à 2 millions, (ii) des produits d'une réaction entre la polyéthylènimine d'une masse molaire Mw de 500 à 1 million avec au moins un C¿14?- à C¿22?-alkyldicétène, un acide monocarboxylique, un ester d'un acide monocarboxylique ou d'un chlorure d'un acide monnocarboxylique et/ou (iii) des produits d'une réaction entre des polyalkylènpolyamines d'une masse molaire de 300 à 1 million avec au moins un bischlorhydrinéther ou bisglycidyléther d'un polyalkylènglycol d'un poids moléculaire M<SB>N</SB> de 300 à 3000. Ce procédé consiste ensuite à comprimer et à prélever le papier crêpé. L'invention concerne également l'utilisation des agents adhésifs (i) à (iii) comme agent auxiliaire de crêpage.

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