GB750239A - Improvements relating to the production of porous thermoplastic polymers - Google Patents

Improvements relating to the production of porous thermoplastic polymers

Info

Publication number
GB750239A
GB750239A GB1530853A GB1530853A GB750239A GB 750239 A GB750239 A GB 750239A GB 1530853 A GB1530853 A GB 1530853A GB 1530853 A GB1530853 A GB 1530853A GB 750239 A GB750239 A GB 750239A
Authority
GB
United Kingdom
Prior art keywords
sheet
sintered
sponge
group
combined
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
GB1530853A
Inventor
Eric Maurice O'conor Honey
Charles Rupert Hardy
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
Application filed by Pritchett and Gold and EPS Co Ltd filed Critical Pritchett and Gold and EPS Co Ltd
Priority to GB1530853A priority Critical patent/GB750239A/en
Publication of GB750239A publication Critical patent/GB750239A/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
    • C08J9/24—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by surface fusion and bonding of particles to form voids, e.g. sintering
    • 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
    • B29C67/205—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 surface fusion, and bonding of particles to form voids, e.g. sintering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

Sintered porous thermoplastic polymer sheets (see Group V) are combined as laminations with other sheets of flexible spongy material such as can be made by mixing a pore-forming ingredient with a thermoplastic polymer and a solvent and then removing the ingredient and the solvent so as to leave micro-pores. When a uniformly fine material such as maize starch is used as the pore-forming ingredient the resulting uniform microporosity is a valuable feature for filter diaphragms but the spongy material may lack mechanical strength, but when combined with the sintered thermoplastic sheet the mechanical strength is considerably raised while permeability remains. Specification 565,022, [Group IV], is referred to.ALSO:A surgical splint comprises a composite porous structure in which sintered porous thermoplastic polymer sheet material (see Group V) is combined with flexible sponge-like sheet material to give a laminated sheet that can be permanently bent by heating to a temperature at which the sintered thermoplastic has softened enough to be movable under light pressure though the sponge-like material remains unaffected; on cooling, the composite sheet retains its new form. The splint is heated and placed on the patient's body with the sponge-like layer next the skin, when it is shaped in situ. Specification 565,022, [Group IV], is referred to.
GB1530853A 1953-06-03 1953-06-03 Improvements relating to the production of porous thermoplastic polymers Expired GB750239A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1530853A GB750239A (en) 1953-06-03 1953-06-03 Improvements relating to the production of porous thermoplastic polymers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1530853A GB750239A (en) 1953-06-03 1953-06-03 Improvements relating to the production of porous thermoplastic polymers

Publications (1)

Publication Number Publication Date
GB750239A true GB750239A (en) 1956-06-13

Family

ID=10056778

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1530853A Expired GB750239A (en) 1953-06-03 1953-06-03 Improvements relating to the production of porous thermoplastic polymers

Country Status (1)

Country Link
GB (1) GB750239A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2926363A (en) * 1958-01-10 1960-03-01 John R Madlem Canoe construction
US3224924A (en) * 1962-02-08 1965-12-21 Veb Zek Protective padding
US3438912A (en) * 1963-11-22 1969-04-15 Sumitomo Chemical Co Porous plate of polyvinyl chloride resin and method for producing the same
US3487132A (en) * 1965-05-17 1969-12-30 Burt Thorne Production of porous plastic materials by means of dielectric heating
US4242391A (en) * 1977-06-16 1980-12-30 Carl Freudenberg Noise barrier pad and the method for the production of same
GB2223448A (en) * 1988-07-25 1990-04-11 Short Brothers Plc Noise attenuation panel.
WO1992013339A1 (en) * 1991-01-22 1992-08-06 Short Brothers Plc Noise attenuation panel
WO1992012855A1 (en) * 1991-01-22 1992-08-06 Short Brothers Plc Noise attenuation panel
WO1992012856A1 (en) * 1991-01-22 1992-08-06 Short Brothers Plc Noise attenuation panel
WO1995033431A1 (en) * 1994-06-07 1995-12-14 Kirkland Contracts Limited Improvements in or relating to beds
CN118682966A (en) * 2024-08-23 2024-09-24 琥崧微纳米科技(常州)有限公司 Control method of prefilming device

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2926363A (en) * 1958-01-10 1960-03-01 John R Madlem Canoe construction
US3224924A (en) * 1962-02-08 1965-12-21 Veb Zek Protective padding
US3438912A (en) * 1963-11-22 1969-04-15 Sumitomo Chemical Co Porous plate of polyvinyl chloride resin and method for producing the same
US3487132A (en) * 1965-05-17 1969-12-30 Burt Thorne Production of porous plastic materials by means of dielectric heating
US4242391A (en) * 1977-06-16 1980-12-30 Carl Freudenberg Noise barrier pad and the method for the production of same
GB2223448B (en) * 1988-07-25 1993-02-24 Short Brothers Plc Noise attenuation panel
GB2223448A (en) * 1988-07-25 1990-04-11 Short Brothers Plc Noise attenuation panel.
US5543198A (en) * 1988-07-25 1996-08-06 Short Brothers Plc Noise attenuation panel
WO1992013339A1 (en) * 1991-01-22 1992-08-06 Short Brothers Plc Noise attenuation panel
WO1992012855A1 (en) * 1991-01-22 1992-08-06 Short Brothers Plc Noise attenuation panel
WO1992012856A1 (en) * 1991-01-22 1992-08-06 Short Brothers Plc Noise attenuation panel
GB2252077B (en) * 1991-01-22 1994-11-02 Short Brothers Plc Noise attenuation panel
US5414232A (en) * 1991-01-22 1995-05-09 Short Brothers Plc Noise attenuation panel
WO1995033431A1 (en) * 1994-06-07 1995-12-14 Kirkland Contracts Limited Improvements in or relating to beds
CN118682966A (en) * 2024-08-23 2024-09-24 琥崧微纳米科技(常州)有限公司 Control method of prefilming device

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