GB884232A - Improvements in porous plastic sheeting - Google Patents

Improvements in porous plastic sheeting

Info

Publication number
GB884232A
GB884232A GB1401658A GB1401658A GB884232A GB 884232 A GB884232 A GB 884232A GB 1401658 A GB1401658 A GB 1401658A GB 1401658 A GB1401658 A GB 1401658A GB 884232 A GB884232 A GB 884232A
Authority
GB
United Kingdom
Prior art keywords
sheet
sodium chloride
polyvinyl chloride
plasticizer
solvent
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
GB1401658A
Inventor
Eric Maurice O'conor Honey
Charles Rupert Hardy
Frank Sharp
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.)
Pritchett and Gold and EPS Co Ltd
Original Assignee
Pritchett and Gold and EPS Co Ltd
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
Priority to NL238828D priority Critical patent/NL238828A/xx
Application filed by Pritchett and Gold and EPS Co Ltd filed Critical Pritchett and Gold and EPS Co Ltd
Priority to GB1401658A priority patent/GB884232A/en
Priority to BE578274D priority patent/BE578274A/xx
Priority to ES0249096A priority patent/ES249096A1/en
Priority to DE1959P0022715 priority patent/DE1292391B/en
Priority to DK158359A priority patent/DK104590C/en
Priority to CH7283659A priority patent/CH371255A/en
Publication of GB884232A publication Critical patent/GB884232A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/26—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/20—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored
    • B29C67/202—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored comprising elimination of a solid or a liquid ingredient
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08J2327/06—Homopolymers or copolymers of vinyl chloride

Abstract

Microporous sheets are obtained by mixing polyvinyl chloride powder of up to 150m diameter, a plasticizer and powdered sodium chloride in an amount at least equal to 1 1/2 to not more than 4 times the weight of polyvinyl chloride, the particle size of the sodium chloride for a sheet of 1 to 5 mils. thickness being 5 to 10 m , and for a sheet of 6 mils. thickness and above, 8010 to m , and a volatile solvent for the plasticizer which is not a solvent for the polyvinyl chloride, thereby producing a cream which is spread on a carrier, the solvent removed at 90 DEG C., the sheet obtained heated to cause gelling, then cooled, the sodium chloride leached out and the sheet dried. Solvents specified are white spirit and naphtha. Specifications 565,022, 727,679 and 844,801 are referred to.ALSO:Microporous sheets, are obtained by mixing polyvinyl chloride powder of up to 150 m diameter, a plasticizer and powdered sodium chloride in an amount at least equal to one and a half to not more than four times the weight of the polyvinyl chloride, the particle size of the sodium chloride for a sheet of 1 to 5 mils thickness being 5 to 10m , and for a sheet of 6 mils thickness and above, 10 to 80 m , and a volatile solvent for the plasticizer which is not a solvent for the polyvinyl chloride, thereby producing a cream which is spread on a carrier, the solvent removed at 90 DEG C., the sheet obtained heated to cause gelling, then cooled, the sodium chloride leached out and the sheet dried. The specified solvents are white spirit or naphtha. The gelling results in the production of a pervious sheet so that the salt is readily leached out. Specifications 565,022, 727,679 and 844,801 are referred to.
GB1401658A 1958-05-02 1958-05-02 Improvements in porous plastic sheeting Expired GB884232A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL238828D NL238828A (en) 1958-05-02
GB1401658A GB884232A (en) 1958-05-02 1958-05-02 Improvements in porous plastic sheeting
BE578274D BE578274A (en) 1958-05-02 1959-04-29
ES0249096A ES249096A1 (en) 1958-05-02 1959-04-30 Improvements in porous plastic sheeting
DE1959P0022715 DE1292391B (en) 1958-05-02 1959-04-30 Process for the production of microporous films
DK158359A DK104590C (en) 1958-05-02 1959-05-02 Process for the production of a microporous plastic sheet based on a homo- or copolymer of vinyl chloride.
CH7283659A CH371255A (en) 1958-05-02 1959-05-02 Process for the production of synthetic resin films provided with micropores

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1401658A GB884232A (en) 1958-05-02 1958-05-02 Improvements in porous plastic sheeting

Publications (1)

Publication Number Publication Date
GB884232A true GB884232A (en) 1961-12-13

Family

ID=10033459

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1401658A Expired GB884232A (en) 1958-05-02 1958-05-02 Improvements in porous plastic sheeting

Country Status (7)

Country Link
BE (1) BE578274A (en)
CH (1) CH371255A (en)
DE (1) DE1292391B (en)
DK (1) DK104590C (en)
ES (1) ES249096A1 (en)
GB (1) GB884232A (en)
NL (1) NL238828A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3431192A1 (en) * 2012-08-21 2019-01-23 Avery Dennison Corporation System for making porous films, fibers, spheres, and other articles
US11168195B2 (en) 2008-06-12 2021-11-09 Avery Dennison Corporation Porous material and method for producing the same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4278624A (en) * 1978-10-25 1981-07-14 Kornylak Corporation Fluid film continuous processing method and apparatus
IE57552B1 (en) * 1983-05-20 1992-12-16 Unifoam Ag Improvements in or relating to the production of polymeric foam

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1008699A (en) * 1948-05-13 1952-05-20 Manufacturing process for products based on synthetic resin and new products resulting therefrom
US2707201A (en) * 1951-05-05 1955-04-26 Richardson Co Porous storage battery separator and method of making
GB728600A (en) * 1952-07-17 1955-04-20 Pritchett & Gold & E P S Co Improvements relating to the manufacture of micro-porous material
BE521527A (en) * 1952-07-17 1900-01-01
US2809900A (en) * 1954-08-04 1957-10-15 Goodrich Co B F Article of manufacture containing plastic and method for making the same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11168195B2 (en) 2008-06-12 2021-11-09 Avery Dennison Corporation Porous material and method for producing the same
EP3431192A1 (en) * 2012-08-21 2019-01-23 Avery Dennison Corporation System for making porous films, fibers, spheres, and other articles
EP3431271A1 (en) * 2012-08-21 2019-01-23 Avery Dennison Corporation System for making porous films, fibers, spheres, and other articles
US10569479B2 (en) 2012-08-21 2020-02-25 Vertera, Inc. Systems and methods for making porous films, fibers, spheres, and other articles
EP3744509A3 (en) * 2012-08-21 2021-02-17 Vertera Inc. Method and system for making porous articles
US11780175B2 (en) 2012-08-21 2023-10-10 Nuvasive, Inc. Systems and methods for making porous films, fibers, spheres, and other articles

Also Published As

Publication number Publication date
ES249096A1 (en) 1959-10-01
BE578274A (en) 1959-08-17
CH371255A (en) 1963-08-15
DK104590C (en) 1966-06-06
DE1292391B (en) 1969-04-10
NL238828A (en)

Similar Documents

Publication Publication Date Title
GB743364A (en) Improvements in methods of producing porous bodies of thermoplastic material
ES236355A1 (en) Method for producing porous films from a polyvinyl chloride plastisol containing water as the blowing agent
NL7504581A (en) CONTAINING CARBOXYL GROUPS OF POLYMER LATEX AND PROCESS FOR PREPARING THEM.
GB884232A (en) Improvements in porous plastic sheeting
GB1538351A (en) Process for the production of a powder of polyvinylchloride or a vinylchloride copolymerisate suitable for producing plastisols and a drying tower for performing said process
IL30273A0 (en) Process for the production of microporous films,membranes of similar sheets of high polymers and products obtained thereby
ZA756844B (en) Process for the manufacture of plastics dispersions
ES387825A1 (en) Procedure for the production of a foamed poliopheline film. (Machine-translation by Google Translate, not legally binding)
ES416878A1 (en) Latex for forming non-gelling vulcanizable solid foam
CA587518A (en) Process for the preparation of soluble ungelled interpolymers
AT225939B (en) Process for the production of water-redispersible polyvinyl chloride powders
CA565916A (en) Method for making cellular materials from vinyl chloride polymer plastisol using water and a borohydride as a blowing agent
CH411558A (en) Process for the production of a sheet-like, multilayer material provided with cells and device for carrying out this process
AU210266B2 (en) Method of producing fireproof plastics, and fireproof plastic materials obtained thereby
CA857939A (en) Process for the manufacture of foamed plastic from vinyl polymer dispersions
CA574090A (en) Polymeric aminoalkyl vinyl ethers, derivatives thereof, and process for producing them
CA815086A (en) Plastics dispersions with light-sensitive structural units and process for their manufacture
CA559242A (en) Process and apparatus for producing dehydrated pellets
ES373079A3 (en) Procedure for obtaining breathable artificial leather. (Machine-translation by Google Translate, not legally binding)
AU1025055A (en) Method of producing fireproof plastics, and fireproof plastic materials obtained thereby
AU241019B2 (en) Method of making film material, sheeting or the like from synthetic resins or the like
ZA756845B (en) Process for the manufacture of plastics dispersions
AU235286B2 (en) Improvements in vinyl polymer monofilaments and in processes for producing them
CA618799A (en) Dry powder extruding apparatus and methods for producing polytetrafluoroethylene articles
AU2317470A (en) Process for making improved high vinylidene chloride polymer content coating resins