GB2228484A - Foamed component - Google Patents
Foamed component Download PDFInfo
- Publication number
- GB2228484A GB2228484A GB8929335A GB8929335A GB2228484A GB 2228484 A GB2228484 A GB 2228484A GB 8929335 A GB8929335 A GB 8929335A GB 8929335 A GB8929335 A GB 8929335A GB 2228484 A GB2228484 A GB 2228484A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip
- tangled
- filaments
- mould
- component
- 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.)
- Withdrawn
Links
- 230000000694 effects Effects 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims 22
- 239000003365 glass fiber Substances 0.000 claims 21
- 230000004927 fusion Effects 0.000 claims 10
- 238000002347 injection Methods 0.000 claims 8
- 239000007924 injection Substances 0.000 claims 8
- 229920001187 thermosetting polymer Polymers 0.000 claims 4
- 230000007935 neutral effect Effects 0.000 claims 3
- 238000012935 Averaging Methods 0.000 claims 2
- 230000006378 damage Effects 0.000 claims 2
- 229920001821 foam rubber Polymers 0.000 claims 2
- 239000007788 liquid Substances 0.000 claims 2
- 239000012815 thermoplastic material Substances 0.000 claims 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 238000004873 anchoring Methods 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 239000000549 coloured material Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 claims 1
- 230000007423 decrease Effects 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 239000006260 foam Substances 0.000 claims 1
- 239000000976 ink Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000012360 testing method Methods 0.000 claims 1
- 229920001169 thermoplastic Polymers 0.000 claims 1
- 239000004416 thermosoftening plastic Substances 0.000 claims 1
- 230000008719 thickening Effects 0.000 claims 1
- 238000001746 injection moulding Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/86—Incorporated in coherent impregnated reinforcing layers, e.g. by winding
- B29C70/865—Incorporated in coherent impregnated reinforcing layers, e.g. by winding completely encapsulated
-
- 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
- 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
- B29C44/1276—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed parts being three dimensional structures which are wholly or partially penetrated by the foam
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
- B29C70/24—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least three directions forming a three dimensional structure
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Molding Of Porous Articles (AREA)
Description
1 FOAMED COMPONENT This invention relates to a foamed component having
certain rigidity characteristics at the same time as low weight, which component has, at least in one of three coordinate directions, a dimension lying at least in the millimetre range.
By "component", components in the form of bars, ribs, beams, tubes or boards may be understood. Such components have the advantage that they can be mass produced, be lightweight and nevertheless have a volume, can easily be further processed, have to a certain extent a compressive strength and, within limits, also a tensile strength, can insulate heat or sound etc. One disadvantage, however, is that they can be broken relatively easily, that they crumble and have a low flexural rigidity.
An object of the invention is to specify a component of the type mentioned at the beginning which, although retaining the positive characteristics, nevertheless has substantially better stability within the expanded volume. At the same time, it is to be possible to retain the old processing techniques, that is to say that the chemical components forming the expanded volume need not be changed, that the known, for example two-part, moulds can continue to be used, that no special specifications are needed for the further processing of the components,- that no special retraining of the production staff is necessary, that nothing about the ma-chinery used has to be changed and that no special calculations, sacrifices in service life in other ways occur.
According to the invention there is provided a small-celled foamed component having certain rigidity characteristics at 2 the same time as low weight, which component has, at least in one of three coordinate directions, a dimension lying at least in the millimetre range, characterized in that at least one tangled strip with very open meshes lies in the expanded volume, in that the volume of the fillaments of the tangled strip is substantially less than the volume of the tangled strip, in that the expanded volume touches the filaments of the tangled strip at least on the greatest part of the surface of the filaments, in that the net volume taken up by the tangled strip corresponds at least to the greatest part of the expanded volume and in that the filament sections integrated in the tangled strip are neither substantially rigid nor substantially labile in their longitudial extent with respect to forces occurring during expansion.
Such tangled strips already exist as mass products on the market, even if for other areas of application. it reinforces the component quite extraordinarily and prevents crumbling. As before, the expanded volume continues to constitute the main volume. Externally, the component according to the invention can appear just like the previous components and also have the same characteristics such as paintability, machinability etc. Nevertheless, the distance of the original filament from that part-volume directly surrounding it is small. With sufficiently rigid filament sections, the tangled strip is als(not swept into the mould during injection moulding processes. On the other hand, however, since the filaments are sufficiently labile, they cannot become taut in the ultimate phase of the expansion operation and cut up the expanded volume during this phase. Even if the idividual contribution of the filament section is small, due to the large number of filament sections the effect adds up to an appreciable overall result.
Preferably at least one side of the tangled strip has, seen randomly, conical elevations which rise up from the central 3 effect that the tangled strip positions itself in the Mould itself and then, if at all, only the tips of the conical elevations touch against the later outer skin of the comDonent.
Preferably the filaments are of plastic to have the effect of saving weight. In addition, unlike metal filaments, these filaments do not rust. They can also be thicker at the same time as of even less weight ana consequently do not cut into the expanded volume as much. In addition, in terms of material, the plastic of the filament matches better the plastic of the expanded volume. with regard to the diverse object features of the invention, monofil filaments are particularly good.
Preferably the surface of the filaments is, at least over the greatest part of this surface, baked to the adjacent faces of the volume to have the effect that the filaments anchor themselves even better with the foamed volume.
Preferably the filaments are solidly connected to one another at crossing points to have the effect that the stability of the tangled strip instrinsically, and consequently also later in the component, is substantially better.
Preferably the crossing points have a spacing in the centimetre range to have the advantage that, on the one hand, an excellent openness of the tangled strip is obtained, so that the components can flow well into the mould used, and on the other hand the spacing of crossing point to crossing point is relatively small, which points in themselves indeed again represent a small anchorage point due to their crossing characteristics.
Preferably the spacing is, seen randomly, in the lowest r 1 4
Claims (29)
1 13 i i It is clear that other articles, such as boat hulls, pipes, T girders, U supports, channel-shaped structures etc can also be produced in this way.
Wherever importance is attached to the reinforcing characteristics which the strips 11. 71 can yield with suitable material selection, it is advantageous if the filaments have - which is shown for example on the filament 12 - a baking region 76 with the expanded volume 69. Depending on choice of the process and material parameters, such as fusing characteristics, chemical solubility, temperature or the like, the baking region 76 may be more or less intensive.
14 CLAIMS 1. Small-celled foamed component having certain rigidity characteristics at the same time as low weight, which component has, at least in one of three coordinate directions, a dimension lying at least in the millimetre range, characterized in that at least one tangled strip (11, 71) with very open meshes (16) lies in the expanded volume (69), in that the volume of the filaments (12, 13, 14. etc.) of the tangled strip is substantially less than the volume of the tangled strip (11),, in that the expanded volume (69) touches the filaments (12, 13, 14, etc.) of the tangled strip (11, 71) at least on the greatest part of the surface (74) of the filaments, in that the net volume taken up by the tangled strip (11, 74) corresponds at least to the greatest part of the expanded volume (69) and in that the filament sections (21) integrated in the tangled strip (11. 74) are neither substantially rigid nor substantially labile in their longitudinal extent with respect to forces occurring during expansion.
2. Component according to Claim 1, characterized in that at least one side of the tangled strip (11. 74) has. seen randomly, conical elevations (23) which rise up from the central region (22) of the net volume of the tangled strip (11. 74).
3. Component according to Claim 1g characterized in that the filaments (12. 131 14. etc.) are of plastic.
4. Component according to Claim 1 or 3. characterized in that the surface (74) of the filaments (12. 13r 14f etc.) is. at least over the greatest part of this surface (74), baked to the adjacent faces of the volume (69).
1
5. Component according to Claim lt characterized in that the filaments (12, 13, 14, etc.) are solidly connected to one another at crossing points (17. 18).
6. Component according to Claim 5, characterized in that the crossing points (17, 18) have a spacing in the cetimetre range.
7. Component according to Claim 6, characterized in that the spacing is, seen randomly, in the lowest centimetre range.
8. Component according to Claim 1, characterized in that the filaments (12. 13r 14. etc.) have a thickness in the lowest centimetre range.
9. Component according to Claim 8, characterized in that the thickness is in the tenths of a millimetre range.
10. Component according to Claims 3 and 5, characterized in that the filaments (12, 13.. 14,. etc.) are baked until fused with one another at the crossing point.
11. Component according to Claim 1, characterized in that the tangled strip (11,. 71) is produced by an at least partially random operation.
12. Component according to Claim 1, characterized in that the expanded volume (69) is of thermoset material.
13. Component according to Claim 3, characterized in that the filaments (12. 131 14, etc.) are of thermoset material.
14. Component according to Claim 3, characterized in that the filaments (12, 13, 14, etc.) are of thermoplastic material.
15.. Component according to Claim 1, characterized in that a tensile force-absorbing reinforcing mat (43. 72) lies in at least one outer skin region of the expanded volume (69).
16. Component according to Claim 15. characterized in that the reinforcing mat (43. 72) is a glass fibre mat which is substantially thinner than the component (56) perpendicular to the glass fibre mat (43. 47) is thick.
17. Component according to Claim 15 or 16. characterized in that a reinforcing mat (43. 47) is provided in 16 two mutually opposite outer skin regions and in that the spacing between the reinforcing mats (43, 47) is substantially smaller than their transverse dimension.
18. Component according to Claim 17, characterized in that having the shape of a board (56).
19. Component according to one or more of the preceding claims, characterized in that fastening means (42) are seated firmly with their rooting region (46) in the component (56).
20. Component according to Claim 19. characterized in that the rooting region (46) is seated in the tangled strip (11).
21. Component according to Claim 19, characterized in that the fastening means (42) are pin-like means such as screw bolts etc.
22. Constructional unit according to one or more of the preceding claims, characterized in that applied around the component (56) is a layer which is integrally bonded to the component (56).
23. Constructional unit according to Claim 22. characterized in that the layer is rigid foam rubber.
24. Constructional unit according to Claim 23, characterized in that it is a wind deflecting device for vehicles.
25. Apparatus for the production of a component according to one or more of Claims 1 to 21 characterized in that a tangled strip (11,, 71),, on the one side of which there lies a reinforcing mat. is placed into a twopart mould (34) and in that the gate (38) of the mould lies at a point in front of the tangled strip (11.. 71) which is free from the reinforcing mat (43. 471 72).
26. Apparatus according to Claim 25. characterized in that the gate (38) lies tangentially to the course there of the reinforcing mat (43, 47).
27. Process for the production of a component according to one or more of the preceding claims, characterized in that a tangled strip (11r 71) is placed in the open mould (32) of a two-part mould (33, 34), which strip fills the mould (32) at least substantially. in that a t 17 reinforcing mat (43,47,72) is placed in the open mould (32), up against the tangled strip (11,71) but in such a way that the gate (38,74) of the mould remains free, in that foamforming components are introduced into the mould (32) and in that the mould (32) is kept closed at least until the end of the expansion operation.
28. Small-celled foamed component as claimed in claim 1 substantially as described with reference to the accompanying drawings.
29. Process for the production of a component substantially as described in any of the examples of the invention disclosed herein.
Published 1990 atThe Patent =ce. State House. 66 71 High Holborn. London WC1R 4TP. Further copies maybe obtalnedfrom The Patent=ice. Sales ch, st mary Cray. Orpington. Kent BR5 3RD. Printed by Multiplex techniques ltd, St Mary Cray. Kent. Con. l!S7
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3901769A DE3901769A1 (en) | 1989-01-21 | 1989-01-21 | FOAMED COMPONENT |
Publications (2)
Publication Number | Publication Date |
---|---|
GB8929335D0 GB8929335D0 (en) | 1990-02-28 |
GB2228484A true GB2228484A (en) | 1990-08-29 |
Family
ID=6372539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8929335A Withdrawn GB2228484A (en) | 1989-01-21 | 1989-12-29 | Foamed component |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPH02229012A (en) |
DE (1) | DE3901769A1 (en) |
ES (1) | ES2018993A6 (en) |
FR (1) | FR2642003A1 (en) |
GB (1) | GB2228484A (en) |
IT (1) | IT1238975B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2683763A1 (en) * | 1991-11-19 | 1993-05-21 | Solas | Method of obtaining articles, ready for use, made of composite materials, by moulding |
WO2013151419A1 (en) * | 2012-04-05 | 2013-10-10 | Enkev B.V. | Method for manufacturing a composite element and support element provided thereby |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10057365A1 (en) * | 2000-11-18 | 2002-05-23 | Bayerische Motoren Werke Ag | Long fiber injection process for molding a fiber reinforced plastic sandwich structure, involves surrounding an intermediate core layer with LFI material |
CN105946250A (en) * | 2016-07-05 | 2016-09-21 | 胡润屏 | Manufacturing method of pad 3D monofilament structure non-fabric composite elastic material |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1310339A (en) * | 1970-04-07 | 1973-03-21 | Upjohn Co | Structural polyisocyanurate foams |
GB1338944A (en) * | 1970-11-18 | 1973-11-28 | Bayer Ag | Moulded foam plastics articles having zones of differing density |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1135926A (en) * | 1954-09-02 | 1957-05-06 | Bayer Ag | Floating bodies in foamy polyurethane materials |
DE3022017A1 (en) * | 1980-06-12 | 1981-12-17 | Johann Borgers Gmbh & Co Kg, 4290 Bocholt | Internal lining esp. for roof of automobile - contains foam esp. polyurethane reinforced by fibrous fleece esp. of polyamide |
US4418031A (en) * | 1981-04-06 | 1983-11-29 | Van Dresser Corporation | Moldable fibrous mat and method of making the same |
-
1989
- 1989-01-21 DE DE3901769A patent/DE3901769A1/en not_active Withdrawn
- 1989-12-15 ES ES8904228A patent/ES2018993A6/en not_active Expired - Lifetime
- 1989-12-27 FR FR8917264A patent/FR2642003A1/en active Pending
- 1989-12-29 GB GB8929335A patent/GB2228484A/en not_active Withdrawn
-
1990
- 1990-01-12 JP JP2006049A patent/JPH02229012A/en active Pending
- 1990-01-19 IT IT83308A patent/IT1238975B/en active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1310339A (en) * | 1970-04-07 | 1973-03-21 | Upjohn Co | Structural polyisocyanurate foams |
GB1338944A (en) * | 1970-11-18 | 1973-11-28 | Bayer Ag | Moulded foam plastics articles having zones of differing density |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2683763A1 (en) * | 1991-11-19 | 1993-05-21 | Solas | Method of obtaining articles, ready for use, made of composite materials, by moulding |
WO2013151419A1 (en) * | 2012-04-05 | 2013-10-10 | Enkev B.V. | Method for manufacturing a composite element and support element provided thereby |
Also Published As
Publication number | Publication date |
---|---|
IT9083308A0 (en) | 1990-01-19 |
FR2642003A1 (en) | 1990-07-27 |
DE3901769A1 (en) | 1990-07-26 |
JPH02229012A (en) | 1990-09-11 |
IT1238975B (en) | 1993-09-17 |
GB8929335D0 (en) | 1990-02-28 |
IT9083308A1 (en) | 1991-07-19 |
ES2018993A6 (en) | 1991-05-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |