ES410888A1 - Porous sheet - impermeable to water except under pressure of polyolefine and possibly cellulose fibres - Google Patents

Porous sheet - impermeable to water except under pressure of polyolefine and possibly cellulose fibres

Info

Publication number
ES410888A1
ES410888A1 ES410888A ES410888A ES410888A1 ES 410888 A1 ES410888 A1 ES 410888A1 ES 410888 A ES410888 A ES 410888A ES 410888 A ES410888 A ES 410888A ES 410888 A1 ES410888 A1 ES 410888A1
Authority
ES
Spain
Prior art keywords
water
sheet
impermeable
polyolefine
under pressure
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
ES410888A
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.)
Crown Zellerbach International Inc
Original Assignee
Crown Zellerbach International Inc
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 Crown Zellerbach International Inc filed Critical Crown Zellerbach International Inc
Publication of ES410888A1 publication Critical patent/ES410888A1/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/12—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials
    • D21H5/20—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of organic non-cellulosic fibres too short for spinning, with or without cellulose fibres
    • D21H5/202—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of organic non-cellulosic fibres too short for spinning, with or without cellulose fibres polyolefins
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/12—Organic non-cellulose fibres from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H13/14—Polyalkenes, e.g. polystyrene polyethylene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
  • Nonwoven Fabrics (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)

Abstract

A porous, water-resistant sheet consists of 60-100 wt.% of polyolefin fibres with total morphology and dimensions similar t cellulose paper fibres and specific surface >1 m2/g, and is not >40 wt.% of paper fibres resembling cellulose. The sheet has a Sheffied porosity of >300 cc/min., and a cosine of the angle of contact with water of 0. The sheet is permeable to air and to very finely divided solids. It is impermeable to water, but is permeable to water under press. the wet strength of the sheet is 20-100% of the dry strength, and is 0.25-1 kg/15 mm. The sheet can be used to make tents and water-proof clothing. It can be used also as a filter paper, filter cloth or semi-permeable membrane, and as a packing material.
ES410888A 1972-01-24 1973-01-23 Porous sheet - impermeable to water except under pressure of polyolefine and possibly cellulose fibres Expired ES410888A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21993872A 1972-01-24 1972-01-24

Publications (1)

Publication Number Publication Date
ES410888A1 true ES410888A1 (en) 1975-12-01

Family

ID=22821341

Family Applications (1)

Application Number Title Priority Date Filing Date
ES410888A Expired ES410888A1 (en) 1972-01-24 1973-01-23 Porous sheet - impermeable to water except under pressure of polyolefine and possibly cellulose fibres

Country Status (8)

Country Link
JP (1) JPS4882102A (en)
BE (1) BE794476A (en)
CH (1) CH550271A (en)
DE (1) DE2303180A1 (en)
ES (1) ES410888A1 (en)
FR (1) FR2169197A1 (en)
IT (1) IT983413B (en)
NL (1) NL7300943A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5140406A (en) * 1974-10-04 1976-04-05 Toray Industries INSATSUYOSHI
GB1569417A (en) * 1976-03-30 1980-06-18 Ici Ltd Sheet type wall covering or ceiling covering
GB1603830A (en) * 1977-11-10 1981-12-02 Wiggins Teape Group Ltd Photographic support
FR2449159A1 (en) * 1979-02-14 1980-09-12 Montedison Spa Filtering bags for infusion prepn. - made from sheet comprising mixt. of thermoplastic pref. polyolefin fibrils and cellulose fibres
GB8302166D0 (en) * 1983-01-26 1983-03-02 Wiggins Teape Group Ltd Paperlike sheet materials
DE4301166C2 (en) * 1993-01-19 1997-12-18 Mehler Tech Textilien Gmbh Textile fabric for awnings, umbrellas, tents, tarpaulins and the like and method for its production

Also Published As

Publication number Publication date
NL7300943A (en) 1973-07-26
CH550271A (en) 1974-06-14
DE2303180A1 (en) 1973-08-09
JPS4882102A (en) 1973-11-02
IT983413B (en) 1974-10-31
FR2169197B1 (en) 1976-09-10
BE794476A (en) 1973-05-16
FR2169197A1 (en) 1973-09-07

Similar Documents

Publication Publication Date Title
ES8405610A1 (en) Flexible absorbent boards
DE3379337D1 (en) Method of and apparatus for removing liquid from webs of porous material
EP0246748A3 (en) Vapor-permeable liquid impermeable fabric
JPS6415103A (en) Composite membrane for separating increased fluid
GB1350661A (en) Thermal insulating materials
KR830006646A (en) Drying method and device
NO823532L (en) MOISTURIZED, Vapor-permeable sheet-shaped materials
ES410888A1 (en) Porous sheet - impermeable to water except under pressure of polyolefine and possibly cellulose fibres
FR2091793A5 (en) Aqueous soln separator - using pressure sensitive membrane in contact - with suspensions
RO86703B (en) Train of cylinders fro dehydrating the strip like materials
SE7804680L (en) PROCEDURE FOR PREPARING PAPER WITH IMPROVED DRY STRENGTH
EP0288257A3 (en) Flexible membranes
ES429626A1 (en) Continuous decatizing machine
GB1477976A (en) Water outlet for draining roof and like surfaces
FR2353676A1 (en) Process for watermarking paper - uses patterned suction to draw a fluid suspension through the wet pulp
GB1313134A (en) Odour-absorbing pads particularly for use in surgical work
JPS54145766A (en) Modification of porous synthetic resin membrane
GB1216925A (en) Process for the production of microporous polyurethane (urea) sheet structures that are permeable to water vapour
FR2044454A5 (en) High strength waterproof composite paper - fabric
FR2289453A1 (en) Combined filter and dryer for sewage sludge etc - uses band of vacuum filter to carry cake through filter press
FR1602741A (en) Non-woven filter material for dust extrac- - tion consists of lightly-needled continuous
FR2215258A1 (en) Filter press with thermoplastic plates - having spaces which can be pressurised to achieve improved dewatering in the cake
GB105556A (en)
GB784637A (en) Process for the manufacture of glossy, matt or patterned surfaces on carrier webs
FR2291857A1 (en) Needled felt used for steam pressing fabrics - with permeability to air of at least 500 (pref 1000-2500) litres per sq cm per min