GB1166994A - Improvements relating to Porous Plastics Materials - Google Patents

Improvements relating to Porous Plastics Materials

Info

Publication number
GB1166994A
GB1166994A GB4385865A GB4385865A GB1166994A GB 1166994 A GB1166994 A GB 1166994A GB 4385865 A GB4385865 A GB 4385865A GB 4385865 A GB4385865 A GB 4385865A GB 1166994 A GB1166994 A GB 1166994A
Authority
GB
United Kingdom
Prior art keywords
working material
sheet
surface working
filler
mixture
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
GB4385865A
Inventor
Victor Ralph Cunningham
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.)
Porvair PLC
Original Assignee
Porvair PLC
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 Porvair PLC filed Critical Porvair PLC
Priority to GB4385865A priority Critical patent/GB1166994A/en
Priority to NL6614527A priority patent/NL6614527A/xx
Priority to FR80089A priority patent/FR1515026A/en
Priority to ES0332274A priority patent/ES332274A1/en
Priority to CH1485066A priority patent/CH493589A/en
Priority to BE688286D priority patent/BE688286A/xx
Publication of GB1166994A publication Critical patent/GB1166994A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/30—Expanding the moulding material between endless belts or rollers
    • 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
    • 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
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F4/00—Monocomponent artificial filaments or the like of proteins; Manufacture thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
    • D06N3/0052—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers obtained by leaching out of a compound, e.g. water soluble salts, fibres or fillers; obtained by freezing or sublimation; obtained by eliminating drops of sublimable fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)

Abstract

1,166,994. Porous coating. PORVAIR Ltd. 14 Oct., 1966 [15 Oct., 1965], No. 43858/65. Heading B2E. [Also in Division C3] Composite sheet material comprising a sheet of a thermoplastic synthetic polymeric plastics surface working material formed directly on and in adherence with the surface of a permanent support which consists of a fibrous material impregnated with an elastomeric synthetic plastics base working material, which is a polymer that is soluble in the common solvents for the surface working material, is prepared by forming a homogeneous mixture comprising a solid particulate removable filter and the surface working material by homogeneously dispersing the filter in the working material when the latter is in a plastic or liquid state and then removing any solvent used by evaporation, melt coating the homogeneous mixture as a continuous sheet on the permanent support by means of a melt roll coating machine which has a pair of horizontally disposed coacting rolls rotating in different directions at different peripheral speeds, the mixture being supplied to the nip of this pair of rolls, the rolls being heated to temperatures such as to render the surface working material plastic and the temperature and the difference in speed of rotation being such as to cause the mixture to form a continuous homogeneous sheet on the surface of the faster one of the rolls (the transfer roll), the sheet being transferred to the permanent support which passes between the transfer roll and a support roll which bears against the transfer roll and rotates in the opposite direction to the transfer roll, and exposing the sheet to a leaching agent so as to remove the filler but not to adversely affect the surface working material, the nature of the filler, the weight ratio of filler to surface working material and the conditions during the melt coating being selected to ensure that a continuous sheet of the mixture is formed and that the structure of the sheet is such as to enable the filler to be removed to form a porous sheet of surface working material. The permanent support may be formed by impregnating with the base working material a felt formed by mechanically entangling a web of staple fibres, the amount of impregnant used being such that the base zone remains appreciably vapour-permeable. Polyvinyl chloride and polyurethanes are preferably used as the surface working material and suitable fillers are water-soluble inorganic salts, such as sodium chloride. The resulting sheet material may be used in the footwear, clothing and upholstery fields.
GB4385865A 1965-10-15 1965-10-15 Improvements relating to Porous Plastics Materials Expired GB1166994A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB4385865A GB1166994A (en) 1965-10-15 1965-10-15 Improvements relating to Porous Plastics Materials
NL6614527A NL6614527A (en) 1965-10-15 1966-10-14
FR80089A FR1515026A (en) 1965-10-15 1966-10-14 Improvements to porous plastics
ES0332274A ES332274A1 (en) 1965-10-15 1966-10-14 Procedure for the manufacturing of porous plastic materials. (Machine-translation by Google Translate, not legally binding)
CH1485066A CH493589A (en) 1965-10-15 1966-10-14 Porous pvc or polyurethane sheet by dissolving out
BE688286D BE688286A (en) 1965-10-15 1966-10-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4385865A GB1166994A (en) 1965-10-15 1965-10-15 Improvements relating to Porous Plastics Materials

Publications (1)

Publication Number Publication Date
GB1166994A true GB1166994A (en) 1969-10-15

Family

ID=10430624

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4385865A Expired GB1166994A (en) 1965-10-15 1965-10-15 Improvements relating to Porous Plastics Materials

Country Status (6)

Country Link
BE (1) BE688286A (en)
CH (1) CH493589A (en)
ES (1) ES332274A1 (en)
FR (1) FR1515026A (en)
GB (1) GB1166994A (en)
NL (1) NL6614527A (en)

Also Published As

Publication number Publication date
NL6614527A (en) 1967-04-17
ES332274A1 (en) 1967-07-16
CH493589A (en) 1970-07-15
BE688286A (en) 1967-04-14
FR1515026A (en) 1968-03-01

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees