GB2104833A - Flexible sheet with fixing device - Google Patents
Flexible sheet with fixing device Download PDFInfo
- Publication number
- GB2104833A GB2104833A GB08218308A GB8218308A GB2104833A GB 2104833 A GB2104833 A GB 2104833A GB 08218308 A GB08218308 A GB 08218308A GB 8218308 A GB8218308 A GB 8218308A GB 2104833 A GB2104833 A GB 2104833A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fixing device
- sheet
- patch
- flexible sheet
- secured
- 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- Withdrawn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 10
- 229920003023 plastic Polymers 0.000 abstract description 4
- 239000004033 plastic Substances 0.000 abstract description 4
- 230000032798 delamination Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B13/00—Hook or eye fasteners
- A44B13/0029—Hook or eye fasteners characterised by their way of fastening to the support
- A44B13/0047—Hook or eye fasteners characterised by their way of fastening to the support welded or moulded
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B13/00—Hook or eye fasteners
- A44B13/0058—Eyelets or grommets
- A44B13/0064—Eyelets or grommets characterised by their material
- A44B13/007—Eyelets or grommets characterised by their material made of plastics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/06—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips
- F16B5/0692—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining flexible sheets to other sheets or plates or to strips or bars
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tents Or Canopies (AREA)
Abstract
A weatherproof sheet 1, for example a tarpaulin, has attached thereto one or more apertured fixing devices which may take the form of a plastics cleat 2, Fig. 1 or a plastics eyelet 8, Fig. 3. In order to increase the strength of the sheet 1 a patch 5, preferably of similar material to the sheet 1 is secured to the sheet 1 in the region of the device 2 or 8. Preferably, the patch 5 is secured to the sheet 1 on the same side thereof as fixing device 2 or 8 and is secured to both the fixing device and the sheet around the whole periphery of the device. This reduces the risk of removal of the device caused by delamination of the sheet. However, the patch 5 and fixing device may be located on opposite sides of the sheet, Fig. 7 (not shown). <IMAGE>
Description
SPECIFICATION
Flexible sheet with fixing device
This invention relates to a flexible sheet, e.g. a tarpaulin, provided with at least one fixing device enabling the flexible sheet to be retained by lashing means such as ropes.
The applicants' British patent specification No.
1,504,699 discloses a fixing device having a base flange rigidly secured to one side of a flexible sheet. After a period of use it has been found that a fixing device secured in this way can pull away from the flexible sheet, particularly if the latter has a polyvinyl chloride coating which tends to separate from the remainder of the flexible sheet and come away with the fixing device, exposing scrim in the centre of the sandwich construction of the flexible sheet.
In order to overcome this problem, a method has been developed whereby a hole is cut in the flexible sheet and the fixing device pushed through the hole from the reverse side of the sheet and welded in position. Whilst this solution overcomes the problem of delamination of the flexible sheet it requires a hole to be precut in the flexible sheet at each location where a fixing device is required. Precutting of such holes in the flexible sheet requires a separate operation on a specialist machine which can be lengthy and expensive in the case of a large flexible sheet which has to be pulled through a cutting machine to form a large number of holes.
An aim of the present invention is to provide a stronger form of attachment of the fixing device to the flexible sheet.
According to the invention there is provided a flexible sheet of weatherproof material having an apertured fixing device secured thereto and a patch of sheet material attached to the flexible sheet in the region of the fixing device.
The patch is preferably secured to the sheet on the same side thereof as the fixing device with the patch extending over the device and being attached thereto, the patch being secured to the sheet beyond the periphery of the fixing device.
Preferably, the patch of sheet material extends beyond the margin of the base flange around the whole of the periphery of the latter, so that the patch reinforces the sheet material in the region of the fixing device.
In an embodiment of the invention described in more detail below, the aperture of the fixing device is formed by a loop or eye which is integral with a base flange and which projects therefrom.
Such a device is commonly called a cleat. In this embodiment the patch is preformed with an aperture through which the loop or eye projects, there being no need to cut a hole in the flexible sheet.
In another embodiment the aperture of the fixing device is formed in the centre of a base flange. In this construction, which is called an eyelet, a hole is again preformed in the patch, and a hole is cut through the flexible sheet after the fixing device has been secured in position between the flexible sheet and the patch. It will be appreciated that cutting a hole in the flexible sheet as a final step is far easier than preforming the flexible sheet with holes at the necessary locations, as practised in the prior method described above.
It will be appreciated that the invention can be used to attach a fixing device to a flexible sheet either in the middle or adjacent the edge of the latter and may be used for attachment of cleats or eyelets of various forms.
Some forms of flexible sheet in accordance with the invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a sectional view showing one form of flexible sheet to which a fixing device in the form of a cleat has been attached:
Figure 2 is a plan view of the sheet of Figure 1;
Figures 3 and 4 are respectively views similar to those of Figures 1 and 2 but illustrating an eyelet attached to a flexible sheet, and
Figures 5 to 7 are respectively sectional views showing other forms of sheet with eyelets attached.
Referring to Figures 1 and 2, a flexible tarpaulin sheet 1 has attached thereto a plastics cleat 2 comprising a base flange 3 integrally formed with a projecting loop or eye 4 for the passage of a lashing rope. A patch 5 which is preferably of a similar material to that of the tarpaulin sheet 1 is precut to the shape shown in Figure 2 with an elongated hole 6.
To secure the cleat 2 to the tarpaulin sheet 1, the base flange 3 is placed on the tarpaulin sheet 1 at the desired position and the patch 5 placed over the base flange 3, with the loop or eye 4 projecting through the hole 6. The tarpaulin sheet 1, the base flange 3 and the patch 5, are then high frequency or heat welded together to form a triple-layer welded construction of which the middle layer is formed by the flange 3. The patch 5 projects beyond the base flange 3 and is welded directly to the tarpaulin sheet 1 over this outer margin to provide a very strong form of attachment. Adjacent its inner periphery, the patch overlies a continuous step 7 extending in an oval shape around the base flange 3.
In the embodiment of Figures 3 and 4 (in which similar parts bear the same reference numerals) the fixing device is a plastics eyelet 8 having an apertured portion which is formed in the centre of the base flange 3 and which is defined by a thickened wall 9 surrounding an elongated aperture 10. The patch 5 is again preformed with a hole 6, but in this case the hole 6 is larger than that in Figures 1 and 2 to receive the upstanding wall 9. After the base flange 3 has been welded between the flexible sheet 1 and the patch 5 in a manner comparable to that already described for
Figures 1 and 2, a hole 11 is cut in the tarpaulin sheet 1 in alignment with the aperture 10.
The cleat 2 of Figures 1 and 2 can be used with the eyelet 8 of Figures 3 and 4 to secure two tarpaulin sheets together, this being done by inserting the loop or eye 4 of the cleat 2 through the aperture 10 in the eyelet 8.
Another form of eyelet 8 is shown in Figure 5.
In this form the eyelet has a part-spherical shape.
The tarpaulin sheet extends beyond the bottom edge of the eyelet 8 and has a circular hole 11.
The eyelet is secured by the patch 5 which extends over the outer surface of the eyelet, the hole 6 of the patch being circular and in alignment with the upper aperture 10 in the eyelet.
Figure 6 illustrates the attachment to the tarpaulin sheet of an eyelet of similar shape to that of Figure 3. In this case the patch 5 is secured to the sheet 1 and the eyelet 8 is attached to the patch. The patch thus provides strengthening and prevents the eyelet from pulling away from the sheets by delamination of the sheet.
In Figure 7 there is illustrated yet another way of attaching an eyelet to the tarpaulin sheet 1.
The patch 5 and eyelet 8 are located on opposite sides of the tarpaulin. The resulting structure is stronger than when the eyelet is secured to the tarpaulin without a patch. This form is better suited to more open weave sheets 1.
It should be mentioned that the step 7 on the cleats and eyelets is merely convenient rather than essential and 'step-less' fixing devices, such as shown in Figure 5, may also be used.
The precise sequence of producing the structure described in Figures 3 and 4 is not essential. Thus the cutting and welding may be reversed or these steps may be simultaneous.
In the above-described sheets having eyelets the patch is described as having a preformed aperture. However, it will be appreciated that the aperture may be formed in the patch after it has been attached to the sheet.
Furthermore, the patch need not be bonded, by welding or otherwise, to the eyelet immediately adjacent the hole of the eyelet. A portion of the patch, for example of 1/4 inch from the edge of the eyelet hole may not be so attached.
Many other modifications are possible. For example, the eyelet 8 shown in Figure 5 may have a thin flange around its periphery, similar to the flange 3 of the cleat of Figure 1 , the flange being sandwiched between the patch 5 and the sheet 1.
Furthermore, the eyelet or cleat may have an aperture of any desired shape, for example oval or circular.
It will be appreciated that in most of the abovedescribed embodiments there are three layers, i.e.
the fixing device, the patch and the sheet, bonded together, such as by welding, to form a strong attachment of the fixing device to the sheet.
Claims (9)
1. A flexible sheet of weatherproof material having an apertured fixing device secured thereto and a patch of sheet material attached to the flexible sheet in the region of the fixing device.
2. A flexible sheet according to claim 1, wherein the patch is secured to the sheet on the same side thereof as the fixing device.
3. A flexible sheet according to claim 2, wherein the patch extends over and is attached to the fixing device and is secured to the sheet beyond the periphery of the fixing device.
4. A flexible sheet according to any of claims 1 to 3, wherein the patch extends beyond the periphery of the fixing device around the whole of said periphery.
5. A flexible sheet according to any of claims 1 to 4, wherein the fixing device is a cleat.
6. A flexible sheet according to any of claims 1 to 4, wherein the fixing device is an eyelet.
7. A flexible sheet according to any of claims 1 to 6, wherein the fixing device has a base flange and an upstanding apertured portion.
8. A flexible sheet according to any of claims 1 to 7, wherein the patch is of the same or similar material as the sheet.
9. A flexible sheet according to any of the preceding claims, wherein the sheet and the fixing device and the patch are bonded together as a laminate.
1 0. A flexible sheet of weatherproof material constructed and arranged substantially as herein described with reference to Figures 1 and 2, or
Figures 3 and 4, or any of Figures 5 to 7 of the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08218308A GB2104833A (en) | 1981-07-30 | 1982-06-24 | Flexible sheet with fixing device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8123355 | 1981-07-30 | ||
| GB08218308A GB2104833A (en) | 1981-07-30 | 1982-06-24 | Flexible sheet with fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2104833A true GB2104833A (en) | 1983-03-16 |
Family
ID=26280298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08218308A Withdrawn GB2104833A (en) | 1981-07-30 | 1982-06-24 | Flexible sheet with fixing device |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2104833A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0381808A2 (en) * | 1989-02-09 | 1990-08-16 | Volker Miederhoff | Device for fixing tarpaulins especially on car bodies |
| FR2834184A1 (en) * | 2001-12-27 | 2003-07-04 | Rossignol Sa | Eyelet for clothing has two opposing annular sections defining opening for strap and fitting onto opposite sides of clothing |
| EP1673994A1 (en) * | 2004-12-24 | 2006-06-28 | Qingdao Gyoha En-Tech Plastics Co., Ltd. | Manufacturing method for eyelet and structure thereof |
| WO2015003087A1 (en) * | 2013-07-02 | 2015-01-08 | Patagonia, Inc. | Apparatus and method for thermally bonding grommets to fabric |
-
1982
- 1982-06-24 GB GB08218308A patent/GB2104833A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0381808A2 (en) * | 1989-02-09 | 1990-08-16 | Volker Miederhoff | Device for fixing tarpaulins especially on car bodies |
| DE3903748A1 (en) * | 1989-02-09 | 1990-08-16 | Volker Miederhoff | DEVICE FOR ATTACHING COVERINGS TO VEHICLE BODIES |
| EP0381808A3 (en) * | 1989-02-09 | 1992-03-11 | Volker Miederhoff | Device for fixing tarpaulins especially on car bodies |
| FR2834184A1 (en) * | 2001-12-27 | 2003-07-04 | Rossignol Sa | Eyelet for clothing has two opposing annular sections defining opening for strap and fitting onto opposite sides of clothing |
| EP1673994A1 (en) * | 2004-12-24 | 2006-06-28 | Qingdao Gyoha En-Tech Plastics Co., Ltd. | Manufacturing method for eyelet and structure thereof |
| WO2015003087A1 (en) * | 2013-07-02 | 2015-01-08 | Patagonia, Inc. | Apparatus and method for thermally bonding grommets to fabric |
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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) |