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FR2130111A1 - Foam cored panels - using anisotropic pre-compressed foams to increase the stiffness/weight ratio - Google Patents

Foam cored panels - using anisotropic pre-compressed foams to increase the stiffness/weight ratio

Info

Publication number
FR2130111A1
FR2130111A1 FR7206854A FR7206854A FR2130111A1 FR 2130111 A1 FR2130111 A1 FR 2130111A1 FR 7206854 A FR7206854 A FR 7206854A FR 7206854 A FR7206854 A FR 7206854A FR 2130111 A1 FR2130111 A1 FR 2130111A1
Authority
FR
France
Prior art keywords
foam
stiffness
increase
weight ratio
compressed
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.)
Granted
Application number
FR7206854A
Other languages
French (fr)
Other versions
FR2130111B1 (en
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.)
ROHM GmbH DT
Roehm GmbH Darmstadt
Original Assignee
ROHM GmbH DT
Roehm GmbH Darmstadt
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 claimed from DE19712114524 external-priority patent/DE2114524C3/en
Application filed by ROHM GmbH DT, Roehm GmbH Darmstadt filed Critical ROHM GmbH DT
Publication of FR2130111A1 publication Critical patent/FR2130111A1/en
Application granted granted Critical
Publication of FR2130111B1 publication Critical patent/FR2130111B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • 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
    • B29C44/34—Auxiliary operations
    • B29C44/56—After-treatment of articles, e.g. for altering the shape
    • 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
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0242—Acrylic resin

Landscapes

  • Laminated Bodies (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

Foam cored composite panels where the core is made of foam pre-compressed in a direction parallel to the plane of the panel. Pref. the core is made from (co)polymethacrylimide foam compressed and chilled from a thermoelastic state. The anisotropic foam exerts its maximum stiffness normal to the plane of the composite panel to reduce the panel weight/stiffness ratio compared with use of an isotropic foam core.
FR7206854A 1971-03-25 1972-02-29 Foam cored panels - using anisotropic pre-compressed foams to increase the stiffness/weight ratio Granted FR2130111A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712114524 DE2114524C3 (en) 1971-03-25 Composite element made of outer layers with a core made of compressed foam

Publications (2)

Publication Number Publication Date
FR2130111A1 true FR2130111A1 (en) 1972-11-03
FR2130111B1 FR2130111B1 (en) 1974-05-10

Family

ID=5802749

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7206854A Granted FR2130111A1 (en) 1971-03-25 1972-02-29 Foam cored panels - using anisotropic pre-compressed foams to increase the stiffness/weight ratio

Country Status (5)

Country Link
JP (1) JPS5630180B1 (en)
CH (1) CH533002A (en)
FR (1) FR2130111A1 (en)
IT (1) IT952936B (en)
SE (1) SE363601B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0264495A1 (en) * 1986-10-22 1988-04-27 Schreiner Luchtvaart Groep B.V. A sandwich construction and a method of making a sandwich construction
US5043127A (en) * 1986-10-22 1991-08-27 Schreiner Luchtvaart Groep B.V. Method of making a shaped article from a sandwich construction
WO2006053029A1 (en) * 2004-11-12 2006-05-18 Dow Global Technologies, Inc. Impact-absorbing members for dynamic impact applications

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0264495A1 (en) * 1986-10-22 1988-04-27 Schreiner Luchtvaart Groep B.V. A sandwich construction and a method of making a sandwich construction
US5043127A (en) * 1986-10-22 1991-08-27 Schreiner Luchtvaart Groep B.V. Method of making a shaped article from a sandwich construction
WO2006053029A1 (en) * 2004-11-12 2006-05-18 Dow Global Technologies, Inc. Impact-absorbing members for dynamic impact applications

Also Published As

Publication number Publication date
DE2114524A1 (en) 1973-07-12
IT952936B (en) 1973-07-30
JPS5630180B1 (en) 1981-07-13
CH533002A (en) 1973-01-31
DE2114524B2 (en) 1973-12-06
FR2130111B1 (en) 1974-05-10
SE363601B (en) 1974-01-28

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