IL38590A - A floater containing an equipment,particularly an electronic equipment - Google Patents

A floater containing an equipment,particularly an electronic equipment

Info

Publication number
IL38590A
IL38590A IL38590A IL3859072A IL38590A IL 38590 A IL38590 A IL 38590A IL 38590 A IL38590 A IL 38590A IL 3859072 A IL3859072 A IL 3859072A IL 38590 A IL38590 A IL 38590A
Authority
IL
Israel
Prior art keywords
floater
polyurethan
foam
skin
polyethylene
Prior art date
Application number
IL38590A
Other versions
IL38590A0 (en
Original Assignee
Smit Nijmegen Electrotec
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 Smit Nijmegen Electrotec filed Critical Smit Nijmegen Electrotec
Publication of IL38590A0 publication Critical patent/IL38590A0/en
Publication of IL38590A publication Critical patent/IL38590A/en

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
    • 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
    • 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
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • 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
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • 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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • 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
    • C08J9/34—Chemical features in the manufacture of articles consisting of a foamed macromolecular core and a macromolecular surface layer having a higher density than the core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING 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
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3055—Cars
    • B29L2031/3061—Number plates
    • 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
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Buffer Packaging (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Casings For Electric Apparatus (AREA)

Claims (17)

WHAT WE CLAIM IS:
1. A floater having electronic measuring, controlling and/or transmitting equipment contained therein, comprising a floater body of polyurethan foam having closed cells and an apparent density of at least 200 kg/m', this floater body surrounding the electronic equipment and being surrounded in its turn by a skin of polyethylene havin a specific density of 0.90 to 0.95 grams/cm .
2. A floater as claimed in claim. 1, wherein the body of polyurethan foam has an apparent density of 300 to 375 kg/m3.
3. A floater as claimed in claim , wherein the poly-ethylene skin has a specific densit of 0.90 to 0.92 g/cm .
4. A floater as claimed in any of claims 1-3, wherein the polyethylene skin has a thickness of 1 to 5 millimeters and preferably of 2 to 3 millimeters.
5. A floater as claimed in any of claims 1-4, where in the body of polyurethan foam forms an integral part.
6. A floater as claimed in any of claims 1-4, wherein the body of polyurethan foam is composed of interconnected, moulded pieces.
7. A floater as claimed in any of claims 1-5, wherein the polyethylene skin forms an integral part.
8. A floater as claimed in any of claims 1-5, wherein the polyethylene skin is composed of interconnected, moulded pieces.
9. A method of manufacturing a floater as claimed in claim 1 comprising the following steps: forming a body wr of polyuxethan foam having closed cells and an apparent density of at least 200 around electronic equipment and forming a polyethylene skin having a specific density of 0.90 to 0.95 g/cm around the resulting "body of poly-urethan foam.
10. A method as claimed in claim 9, wherein the "body of polyurethan foam is formed as an integral part by foaming in a mould.
11. 1 . A method as claimed in claim 9, wherein the "body of polyurethan foam is formed by applying prefabricated moulded pieces of polyurethan foam onto and around the electronic equipment and joining them together.
12. ·. A method as claimed in claim 11, wherein air occlusions between the body of polyurethan foam and the electronic equipment are prevented by means of an epoxy resin adhesive or polyurethan resin adhesive.
13. A method as claimed in claims 1 or 12, wherein the pieces of the body are joined together by means of an epoxy resin adhesive or polyurethan resin adhesive.
14. A method as claimed in claim 9, wherein the polyethylene skin is formed as an integral part by means of injection moulding*
15. A method as claimed in claim 9, wherein the polyethylene skin is formed by app¾ing prefabricated moulded pieces of polyethylene onto and around the body of polyurethan foam and joining them together.
16. 6. A method as claimed in claim 15, wherein the moulded pieces of polyethylene skin are slipped around the polyurethan foam body.
17. method as claimed in claim 16, wherei the pieces of polyethylene skin are slipped on in stretch condition. 18, A method as claimed in any of claims 15-17 > wherein the pieces of polyethylene skin are joined to gether by means of heat-sealing or by an adhesive . composition. C P Attorneys for Applicant
IL38590A 1971-02-02 1972-01-19 A floater containing an equipment,particularly an electronic equipment IL38590A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7101350A NL7101350A (en) 1971-02-02 1971-02-02

Publications (2)

Publication Number Publication Date
IL38590A0 IL38590A0 (en) 1972-03-28
IL38590A true IL38590A (en) 1976-12-31

Family

ID=19812385

Family Applications (1)

Application Number Title Priority Date Filing Date
IL38590A IL38590A (en) 1971-02-02 1972-01-19 A floater containing an equipment,particularly an electronic equipment

Country Status (5)

Country Link
DE (1) DE2202765A1 (en)
FR (1) FR2125098A5 (en)
GB (1) GB1379092A (en)
IL (1) IL38590A (en)
NL (1) NL7101350A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526367A1 (en) * 1982-05-06 1983-11-10 Inst Francais Du Petrole MULTICELLULAR COMPOSITIONS, USED IN PARTICULAR AS FLOATABILITY MATERIALS

Also Published As

Publication number Publication date
NL7101350A (en) 1972-08-04
IL38590A0 (en) 1972-03-28
FR2125098A5 (en) 1972-09-22
GB1379092A (en) 1975-01-02
DE2202765A1 (en) 1972-08-17

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