ES2004737A6 - Waterproofing cardboard - Google Patents

Waterproofing cardboard

Info

Publication number
ES2004737A6
ES2004737A6 ES8701634A ES8701634A ES2004737A6 ES 2004737 A6 ES2004737 A6 ES 2004737A6 ES 8701634 A ES8701634 A ES 8701634A ES 8701634 A ES8701634 A ES 8701634A ES 2004737 A6 ES2004737 A6 ES 2004737A6
Authority
ES
Spain
Prior art keywords
cardboard
wax
bath
waterproofing
solidifying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES8701634A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to ES8701634A priority Critical patent/ES2004737A6/en
Publication of ES2004737A6 publication Critical patent/ES2004737A6/en
Expired legal-status Critical Current

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  • Paper (AREA)

Abstract

The process which imparts greater rigidity and moisture resistance, consists of (a) preparing a bath of paraffin wax or similar waterproofing agent maintained in the molten state (b) immersing the cardboard in the bath at constant temp., so that it is impregnated and saturated (c) removing the cardboard and placing it on absorbent material to remove surplus wax and (d) drying and cooling the cardboard to solidifying the wax.
ES8701634A 1987-06-03 1987-06-03 Waterproofing cardboard Expired ES2004737A6 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES8701634A ES2004737A6 (en) 1987-06-03 1987-06-03 Waterproofing cardboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES8701634A ES2004737A6 (en) 1987-06-03 1987-06-03 Waterproofing cardboard

Publications (1)

Publication Number Publication Date
ES2004737A6 true ES2004737A6 (en) 1989-02-01

Family

ID=8251190

Family Applications (1)

Application Number Title Priority Date Filing Date
ES8701634A Expired ES2004737A6 (en) 1987-06-03 1987-06-03 Waterproofing cardboard

Country Status (1)

Country Link
ES (1) ES2004737A6 (en)

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Legal Events

Date Code Title Description
SA6 Expiration date (snapshot 920101)

Free format text: 2007-06-03

RD1A Patent seized

Effective date: 19920731

RD1A Patent seized

Effective date: 20000327

FD1A Patent lapsed

Effective date: 20000601