GB2075864A - Flocked shaped articles - Google Patents
Flocked shaped articles Download PDFInfo
- Publication number
- GB2075864A GB2075864A GB8114335A GB8114335A GB2075864A GB 2075864 A GB2075864 A GB 2075864A GB 8114335 A GB8114335 A GB 8114335A GB 8114335 A GB8114335 A GB 8114335A GB 2075864 A GB2075864 A GB 2075864A
- Authority
- GB
- United Kingdom
- Prior art keywords
- flocked
- flocking
- article
- article according
- electrostatic field
- 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- Withdrawn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
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000000853 adhesive Substances 0.000 claims abstract description 13
- 230000001070 adhesive effect Effects 0.000 claims abstract description 13
- 230000005686 electrostatic field Effects 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 9
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 6
- 239000004020 conductor Substances 0.000 claims abstract description 5
- 239000004033 plastic Substances 0.000 claims abstract description 5
- 229920003023 plastic Polymers 0.000 claims abstract description 5
- 239000012141 concentrate Substances 0.000 claims abstract description 4
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000013536 elastomeric material Substances 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000000178 monomer Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 10
- 238000004873 anchoring Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 229920001897 terpolymer Polymers 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 210000003660 reticulum Anatomy 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/16—Flocking otherwise than by spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/007—Processes for applying liquids or other fluent materials using an electrostatic field
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2201/00—Polymeric substrate or laminate
- B05D2201/02—Polymeric substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/12—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a coating with specific electrical properties
Landscapes
- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
A flocked shaped article (e.g. a sealing strip for an aperture in the body of a motor vehicle) is made from a plastics or elastomeric material (such as an EPDM monomer) which is non-polar (thus being highly resistant to the effects of weather and sunlight). The surface to be flocked (5) is treated, prior to flocking, with a substance which concentrates the lines of force of an applied electrostatic field thereon. The substance may comprise a film of an electrically conductive material (e.g. an adhesive) and this material preferably contains one or more metal derivatives (especially metal derivatives which exhibit ferromagnetic behaviour). This ensures uniformity of flocking as well as economy of materials, the untreated surfaces of the article tending not to attract the fibres used for flocking.
Description
SPECIFICATION
Flocked shaped articles
This invention relates to a flocked shaped article, and in particularto a flocked shaped article of an elastomeric or plastics material for use as a sealing strip around the edges of apertures of vehicles, such as windows, doors, boots or bonnets.
In known processes for manufacturing flocked shaped articles, the shaped article is exposed during manufacture to an electrostatic field. At the same time, natural or synthetic fibres are urged against the article so that they strike the elastomeric material perpendicular to its surface and become anchored thereto.
The greater the force with which the fibres strike the article, the greater will be the degree of penetration. In order to assist the anchoring process, an adhesive is applied to the surface of the shaped section to be flocked before flocking is carried out, and the adhesive is subsequently dried during vulcanisation of the flocked article.
In order to obtain the said penetration force and consequently an adequate flocking of the articles, it has hitherto been found necessary to use polar elastomeric or plastics materials. In this way, the electrostatic field concentrates its lines of force on the surface of the article and the fibres strike the said surface perpendicular to it.
On the other hand, a flocked shaped article must be able to withstand atmospheric attack and the effects of sunlight once it has been installed.
However, the compounds which offer a greater resistance from this point of view are non-polar compounds, which cannot readily be flocked in an adequate manner. By contrast, polar compounds do not exhibit optimum resistance to the atmosphere.
The object of the present invention is to provide a flocked shaped article in a material which has the flocking quality of polar compounds and the optimum resistance to the atmosphere and to sunlight of non-polar compounds.
Accordingly, the present invention provides a flocked shaped article in which the surface to be flocked is treated, prior to flocking, with a substance which concentrates the lines of force of an applied electrostatic field thereon.
The said substance may comprise an electrically conductive material in the form of a film, preferably in the form of an adhesive to assist in bonding the fibres to the flocked surface.
The adhesive may contain metal derivatives and preferably metal derivatives which exhibitferromagnetic behaviour underthe action of an applied electrostatic field.
The present invention will be illustrated merely by way of example, in the following description and with reference to the accompanying drawings.
In the drawings:
Figure 1 is a view, partly in perspective and partly in section, of a flocked shaped article in accordance with one embodiment of the present invention;
Figure 2 is a cross-sectional view of a flocked shaped article in accordance with a second embodiment of the present invention.
The flocked shaped article 1 illustrated in Figure 1 has a substantially U-shaped body 2 of an elastomeric or plastics material. Preferably, the said body 2 consists of an elastomeric compound of terpolymers such as those commonly known as ethylene propylene diene monomers (EPDM). A resistant insert 3, to facilitate anchoring of the article around an aperture, is embedded in body 2. A projection 4, made of the same type of material used for body 2, i.e. a terpolymer, extends from the body 2.
The use of elastomeric compounds other than those used for body 2 may be preferable for projection 4, if it is desired to endow the said projection 4 with special characteristics, for example, flexibility. In such a case, projection 4 may be made of a cellular material.
The upper part 5 of body 2 and of projection 4 are flocked, in accordance with the present invention, by covering the surface to be flocked with a film of an electrically conductive material. This material may conveniently be carried in an adhesive, which is applied during production to the surface in order to facilitate anchoring of the fibres thereto. The adhesive formulation contains one or more substances which provide the adhesive with a high level of electrical conductivity.
For example, the said substances can be metal derivatives. Preferably, the said metal derivatives can comprise metal salts exhibiting ferromagnetic behaviour under the action of an applied electrostatic field.
Referring now to Figure 2, a flocked shaped article 6 provided with a body 7 of an elastomeric material (e.g. an ethylene propylene diene monomer) has two flanges 8 and 9 and a central portion 10. Both the said flanges 8 and 9 and the central portion 10 are flocked with synthetic fibres (for example, nylon or polyester). In order to obtain the said flocking, the surfaces to be flocked of the flanges and of the central portion are treated, prior to flocking, with an electrically conductive material. Again, this material may conveniently be carried in the adhesive which is applied to the said surfaces during production, in order to facilitate anchoring of the fibres thereto.
Thus, the flocked shaped articles in accordance with the present invention can be made from non-polar elastomeric compounds whilst still having optimum flocking characteristics.
The said non-polar compounds offer optimum resistance to atmospheric attack and to the effects of sunlight and ozone, yet can also be flocked as well as, or better than polar compounds.
The presence of an adhesive having high electrical conductivity on the surface to be flocked makes the said surface a preferential surface for the lines of the force of the electrostatic field, compared with all other surfaces of the article having equal potential for flocking in relation to the source of the electrostatic field. In this way, with the same operating conditions (voltage and current of electrostatic field, and quantity and type of fibres) a larger quantity of the said fibres strikes the surface to be flocked, thereby producing a greater density of cover and uniformity of flocking. However, if it is wished to maintain the same density of cover and uniformity, as in known flocked shaped articles, it is possible to use lowervoltages and lower currents for the electrostatic field, thereby achieving savings in terms of energy and/or materials.
Finally, an increased efficiency of the flocking process is achieved in that with the same number of fibres supplied to the shaped article, a greater number of the said fibres will become firmly anchored to the surface to be flocked, thereby reducing the quantity of the said fibres dispersed over the other surfaces. We have also found that if, in addition to the high conductivity, the said adhesive also has ferromagnetic properties, i.e. the ability to respond by arranging itself accordingly when the material is exposed to a magnetic field, the advantages described above are accentuated, thereby increasing both density of cover and uniformity of flocking.
Claims (8)
1. A flocked shaped article in which the surface to be flocked is treated, priorto flocking, with a substance which concentrates the lines of force of an applied electrostatic field thereon.
2. An article according to Claim 1, in which said substance comprises a film of an electrically conductive material.
3. An article according to Claim 1 or 2, in which said substance comprises an electrically conductive adhesive material.
4. An article according to Claim 3, in which the said adhesive contains one or more metal derivatives.
5. An article according to Claim 4, in which the said metal derivatives exhibit ferromagnetic behaviour under the action of an applied electrostatic field.
6. An article according to any one of the preceding claims, which is made of a non-polar elastomeric or a non-polar plastics material.
7. An article according to Claim 6, which is made of an ethylene propylene diene monomer (EPDM).
8. Aflocked shaped article, substantially as hereinbefore described, with reference to and as illustrated in the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT22002/80A IT1131477B (en) | 1980-05-13 | 1980-05-13 | FLOCKED PROFILE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2075864A true GB2075864A (en) | 1981-11-25 |
Family
ID=11190024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8114335A Withdrawn GB2075864A (en) | 1980-05-13 | 1981-05-11 | Flocked shaped articles |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2075864A (en) |
| IT (1) | IT1131477B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000005058A1 (en) * | 1998-07-20 | 2000-02-03 | Schlegel Corporation | Weatherseal having an electrically deformed polymer surface and method of manufacture |
-
1980
- 1980-05-13 IT IT22002/80A patent/IT1131477B/en active
-
1981
- 1981-05-11 GB GB8114335A patent/GB2075864A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000005058A1 (en) * | 1998-07-20 | 2000-02-03 | Schlegel Corporation | Weatherseal having an electrically deformed polymer surface and method of manufacture |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1131477B (en) | 1986-06-25 |
| IT8022002A0 (en) | 1980-05-13 |
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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) |