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1. WO1992007995 - TREATMENT OF ABSORBENT SANITARY PAPER PRODUCTS

Publication Number WO/1992/007995
Publication Date 14.05.1992
International Application No. PCT/CA1991/000393
International Filing Date 29.10.1991
Chapter 2 Demand Filed 08.05.1992
IPC
D21B 1/02 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
BFIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
1Fibrous raw materials or their mechanical treatment
02Pretreatment of the raw materials by physical or chemical means
D21B 1/32 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
BFIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
1Fibrous raw materials or their mechanical treatment
04by dividing raw materials into small particles, e.g. fibres
12by wet methods; by the use of steam
30Defibrating by other means
32of waste paper
D21C 5/02 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
5Other processes for obtaining cellulose, e.g. cooking cotton linters
02Working-up waste paper
CPC
B29B 17/02
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
17Recovery of plastics or other constituents of waste material containing plastics;
02Separating plastics from other materials
B29B 2017/0289
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
17Recovery of plastics or other constituents of waste material containing plastics;
02Separating plastics from other materials
0213Specific separating techniques
0286Cleaning means used for separation
0289Washing the materials in liquids
B29K 2023/06
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR ; MOULDS, ; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
2023Use of polyalkenes ; or derivatives thereof; as moulding material
04Polymers of ethylene
06PE, i.e. polyethylene
B29K 2023/12
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR ; MOULDS, ; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
2023Use of polyalkenes ; or derivatives thereof; as moulding material
10Polymers of propylene
12PP, i.e. polypropylene
B29K 2033/04
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR ; MOULDS, ; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
2033Use of polymers of unsaturated acids or derivatives thereof as moulding material ; B29K2035/00 takes precedence
04Polymers of esters
B29K 2075/00
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR ; MOULDS, ; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
2075Use of ; PU, i.e.; polyureas or polyurethanes ; or derivatives thereof; , as moulding material
Applicants
  • TRYAM TRADING INC. [CA]/[CA] (AllExceptUS)
  • CONWAY, Marlene, Elizabeth [CA]/[CA] (UsOnly)
  • JOOSTE, François [CA]/[CA] (UsOnly)
  • SMITH, Michael, David [CA]/[CA] (UsOnly)
Inventors
  • CONWAY, Marlene, Elizabeth
  • JOOSTE, François
  • SMITH, Michael, David
Agents
  • GALLOWAY, Warren, J.
Priority Data
902348829.10.1990GB
9113024.517.06.1991GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) TREATMENT OF ABSORBENT SANITARY PAPER PRODUCTS
(FR) TRAITEMENT DE PRODUITS A BASE DE PAPIER HYGIENIQUE ABSORBANT
Abstract
(EN)
A process for the treatment of absorbent sanitary paper products to separate such products into components thereof in a form suitable for recycling or re-use is disclosed; absorbent sanitary paper products include disposable diapers, incontinence products, feminine hygiene products, bedpads and other related absorbent and adsorbent products. The process comprises the step of treating said products in at least one bath of an aqueous solution to remove particulate and/or soluble matter from the products. The bath is operated under conditions that are conductive to non-destructive separation of said products into components thereof. In preferred embodiments, the treated product thus obtained is treated with at least one aqueous washing solution and with at least one aqueous solution of at least one of bleaching agent and antimicrobial agent, and separate streams of plastic and cellulosic materials are recovered. The process results in the recovery of usable products from absorbent sanitary paper products.
(FR)
Procédé de traitement de produits à base de papier hygiénique absorbant consistant à séparer de tels produits en leurs éléments constituants sous une forme qui convient au recyclage ou à la ré-utilisation; des produits à base de papier hygiénique absorbant comprennent des couches jetables, des produits destinés à l'incontinence, des produits d'hygiène féminine, des alèses et d'autres produits similaires absorbants ou adsorbants. Le procédé consiste à traiter lesdits produits dans au moins un bain d'une solution aqueuse pour en enlever des matières particulaires et/ou solubles. Le passage dans le bain est effectué dans des conditions qui conviennent à la séparation non destructive desdits produits en leur éléments constituants. Selon des modes de réalisation préférés, le produit traité ainsi obtenu est traité au moyen d'au moins une solution de rinçage aqueuse et d'au moins une solution aqueuse d'un agent de blanchiment et/ou d'un agent antimicrobien, et des courants séparés de matières plastiques et cellulosiques sont récupérés. Le procédé permet de récupérer des produits à base de papier hygiénique absorbant.
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