GB2149344A - Bonding method - Google Patents
Bonding method Download PDFInfo
- Publication number
- GB2149344A GB2149344A GB08329314A GB8329314A GB2149344A GB 2149344 A GB2149344 A GB 2149344A GB 08329314 A GB08329314 A GB 08329314A GB 8329314 A GB8329314 A GB 8329314A GB 2149344 A GB2149344 A GB 2149344A
- Authority
- GB
- United Kingdom
- Prior art keywords
- adhesive
- employed
- adhesives
- hole
- contact area
- 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- Withdrawn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
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000000853 adhesive Substances 0.000 claims abstract description 47
- 230000001070 adhesive effect Effects 0.000 claims abstract description 47
- 239000003960 organic solvent Substances 0.000 claims description 8
- 230000002411 adverse Effects 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 1
- 239000013464 silicone adhesive Substances 0.000 claims 1
- 239000004821 Contact adhesive Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- -1 cloths Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- 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
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/02—2 layers
-
- 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
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/02—Cellular or porous
- B32B2305/028—Hollow fillers; Syntactic material
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
A method of bonding two surfaces together in which a first adhesive 12, which is of a contact or other quick-acting type, is employed in a first portion or portions of the contact area and a second adhesive 14, which cures more slowly than the first but has a better bond strength at above ambient temperatures, is employed in a second portion or portions of the contact area. <IMAGE>
Description
SPECIFICATION
Bonding method
This invention relates to a method of bonding articles together with adhesive.
Contact and other quick-acting adhesives are available where a quick bond is required but in general either they contain components such as organic solvents which can damage delicate or sensitive surfaces such as some fabrics and the silvered coatings of mirrors or else they produce bonds which can fail, especially under an applied load, at even only moderately elevated temperatures such as may be encountered on a hot summer's day or as a result of proximity to an artificial light source. Organic solvent-based adhesives also tend to shrink on drying and cause warping or the development of undulations where either or both of the articles which are to be bonded together are thin.Adhesives which have a better performance at elevated temperatures and which are free of components which can damage delicate surfaces, on the other hand, tend to require longer cure times which can even exceed 24 hours before maximum bond strength is developed.
The present invention provides a method for bonding articles together which permits speedy formation of the bond without the use of adhesives containing the aforementioned undesirable components and yet which achieves a bond which has better performance at above ambient temperatures than that obtainable using conventional contact or other quick-acting adhesives which are free from such undesirable components.
According to the present invention, a method is provided for bonding two surfaces together over a contact area in which a first adhesive which is of a contact or other quickacting type is employed in one portion of the contact area and a second adhesive which cures more slowly than the first but has a better bond strength at above ambient temperatures is employed in another portion of the contact area.
By means of the invention, the first adhesive is employed to bond the surfaces together while the second, slower acting, adhesive cures to provide the desired performance at above ambient temperatures, It is thus possible to obtain both a rapid bond and a bond which will have a desired level of performance at elevated temperatures employing adhesives which are free or substantially free of components, especially organic solvents, such as methyl ethyl ketone, which would damage one or other (or both) of the surfaces being bonded.
Preferably, either or both of the adhesives is applied over more than one portion of the contact area; for example, each adhesive may be applied in stripes, e.g. alternating stripes, or in another suitable pattern. Where the two adhesives are mutually incompatible e.g. because a component of one would adversely affect the other, the portions of the area occupied by the different adhesives are preferably spaced from one another.
In particularly preferred embodiment, which is especially suitable where one of the surfaces is the surface of a fragile product, at least a portion of that part of the contact area of at least one of the surfaces, and preferably the surface of the fragile product, where the second adhesive is to be employed, is provided with a cavity extending inwardly from said surface, the cavity being so shaped, e.g.
with a reverse taper, that at a first distance from said surface its cross-section, in a plane parallel to said surface, is greater than the corresponding cross-section at a second, shorter, distance from said surface. By employing sufficient of said second adhesive to fill the cavity at least to the depth corresponding to said first distance, the cured adhesive can, in effect, adopt the form of a rivet.
Where the product which is to be provided with the cavities is relatively thin, e.g. as in a tile such as a ceiling tile, or a board, the cavity may take the form of a hole extending completely through the thickness of the product. The two surfaces which are to be bonded together may then be bonded initially by means of a contact or other quick-acting adhesive which is employed over a portion or portions of the contact area other than where the hole or holes are located in one or both of the surfaces and then the second adhesive may be packed, and preferably slightly overpacked, into said hole or holes by injection of the adhesive through the exposed mouth of the hole at the back of the product. The hole may then be closed in any suitable manner, e.g. by means of a plastic or other washer, until the second adhesive is fully cured.
While the invention may be employed to bond together a wide variety of substrates made of a wide variety of materials, e.g.
plastics, glass, metal, wood and cloth, it is particularly suitable for bonding delicate materials such as cloths, fabrics and mirrors (whose silvering tends to be damaged by some chemicals used in quick-acting adhesives), and especially materials such as synthetics which are liable to be adversely affected by organic solvents such as are employed in some adhesives, to the surfaces of fragile objects such as objects made of such materials as fibrous plaster, fibrous gypsum products e.g. Metco fissured tiles marketed by
The Merchant Trading Company of Southall, expanded polystyrene and mineral fibre.
Examples of such objects are boards and tiles e.g. ceiling tiles. One particularly useful application of the invention is in the bonding of mirrors to substrates, particularly fragile substrates such as those described above.
Examples of contact or other quick-acting adhesives which may be employed as adhesives of the first type in this invention and which do not contain components, especially organic solvents, which can damage some surfaces, are water-based contact adhesives and non-flammable contact adhesives e.g.
those sold as Dunlop SN1554 and Dunlop SN1501. Examples of adhesives of the second type are epoxy resins and neutral based silicones e.g. Silicone 795 sold by Dow Corning.
The invention is now illustrated with reference to one embodiment and with the aid of the accompanying drawing which is an enlarged cross-section through a part of an assembly of a mirror and a mineral fibre tile.
Referring to the drawing, a mineral fibre tile 2 is drilled through its thickness at a plurality of points over its surface and the drilled holes are countersunk on both faces of the tile to provide holes 4, one of which is shown. The back of a mirror comprising a glass sheet 6 one face of which is coated with a reflective layer 8, and which is to be bonded to the tile, is masked over those areas 10 which correspond to the locations of the holes in the tile when the mirror is offered up to the tile for bonding, and then coated with a contact adhesive 1 2 which is free of organic solvent which could attack the reflective layer of the mirror, e.g. Dunlop SN1554 or Dunlop
SN1501. The masking is then removed and the mirror with its layer of contact adhesive is offered up to the tile and pressed against the surface of the tile to effect bonding The holes 4 in the tile are then filled from the back of the tile with a second adhesive 14, e.g.
Silicone 795, which gives a better bond at above ambient temperatures than the contact adhesive which is employed but which takes longer to cure. Sufficient of the adhesive composition is employed to slightly over-fill the holes the open mouths of which are then closed, e.g.with metal washers 16, until the said second adhesive composition is cured to a nonfluid state.
The number of holes required will depend upon the size of the tile and the weight of the glass. For ceiling tiles measuring 600 mm X 600 mm, 4 holes are generally suitable when 4 mm thick glass is employed.
Claims (11)
1. A method for bonding two surfaces together over a contact area in which a first adhesive which is of a contact or other quickacting type is employed in a first portion or portions of the contact area and a second adhesive which cures more slowly than the first but has a better bond strength at above ambient temperatures is employed in a second portion or portions of the contact area.
2. A method as claimed in claim 1 in which at least a part of that portion of the contact area of at least one of the surfaces to be bonded together where the second adhesive is to be employed is provided with a cavity extending inwardly from the surface to be bonded, the cavity being so shaped that at a first distance from said surface its crosssection, in a plane parallel to said surface, is greater than the corresponding cross-section at a second, shorter distance from said surface, and sufficient of said second adhesive is employed to fill the cavity at least to the depth corresponding to said first distance.
3. A method as claimed in claim 2 wherein the cavity comprises a hole extending through the entire thickness of the article and the hole is filled with the second adhesive after the surfaces have been bonded together by means of the first adhesive and by supplying said second adhesive through the open end of the hole.
4. A method as claimed in claim 3 in which said hole is over-filled with said second adhesive and the open end of the hole is then closed until said second adhesive is cured to a non-fluid state.
5. A method as claimed in any one of claims 1 to 4 wherein one of the surfaces to be bonded is a surface of a fragile article
6. A method as claimed in any one of claims 1 to 5 wherein one of the surfaces to be bonded is liable to be adversely affected by an organic solvent.
7. A method as claimed in any one of claims 1 to 6 wherein one of the surfaces is the surface of a mirror.
8. A method as claimed in any one of claims 1 to 7 for bonding a mirror to a fragile article.
9. A method as claimed in any one of the preceding claims in which said first adhesive is free or substantially free of organic solvents.
10. A method as claimed in any one of the preceding claims in which said first adhesive is selected from water based adhesives and non-flammable adhesives.
11. A method as claimed in any one of the preceding claims in which said second adhesive is selected from epoxy resin adhesives and neutral based silicone adhesives.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08329314A GB2149344A (en) | 1983-11-03 | 1983-11-03 | Bonding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08329314A GB2149344A (en) | 1983-11-03 | 1983-11-03 | Bonding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8329314D0 GB8329314D0 (en) | 1983-12-07 |
| GB2149344A true GB2149344A (en) | 1985-06-12 |
Family
ID=10551144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08329314A Withdrawn GB2149344A (en) | 1983-11-03 | 1983-11-03 | Bonding method |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2149344A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0195712A2 (en) * | 1985-03-16 | 1986-09-24 | Saint Gobain Vitrage International | Process for glueing a car accessory on the surface of a glass pane |
| EP0497770A4 (en) * | 1989-07-06 | 1992-05-08 | Edward W Watras | Ceiling tile composite. |
| US5853511A (en) * | 1994-04-29 | 1998-12-29 | Fairbanks; Robert P. | Method for joint reinforcement of dissimilar materials |
| DE102006010392A1 (en) * | 2006-03-03 | 2007-09-06 | Roman Dietsche Gmbh & Co Kg | Fastening device for attaching fastening elements on wall has filling channel extending through basic body and interconnecting base surface and cover surface, and provided for filling of self-hardening adhesive substance |
-
1983
- 1983-11-03 GB GB08329314A patent/GB2149344A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0195712A2 (en) * | 1985-03-16 | 1986-09-24 | Saint Gobain Vitrage International | Process for glueing a car accessory on the surface of a glass pane |
| EP0195712A3 (en) * | 1985-03-16 | 1987-12-09 | Saint Gobain Vitrage International | Process for glueing a car accessory on the surface of a glass pane |
| EP0497770A4 (en) * | 1989-07-06 | 1992-05-08 | Edward W Watras | Ceiling tile composite. |
| EP0497770A1 (en) * | 1989-07-06 | 1992-08-12 | WATRAS, Edward W. | Ceiling tile composite |
| US5853511A (en) * | 1994-04-29 | 1998-12-29 | Fairbanks; Robert P. | Method for joint reinforcement of dissimilar materials |
| DE102006010392A1 (en) * | 2006-03-03 | 2007-09-06 | Roman Dietsche Gmbh & Co Kg | Fastening device for attaching fastening elements on wall has filling channel extending through basic body and interconnecting base surface and cover surface, and provided for filling of self-hardening adhesive substance |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8329314D0 (en) | 1983-12-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |