JPS6226361B2 - - Google Patents

Abstract

1. Process for placing floor-covering webs (70, 72) comprising an upper side with a pile (14) and a lower side with a first element (50) of a hook and loop fastener (50, 52) provided at least along one longitudinal edge, the second, tape-like element (52) of said fastener being placed against the undersides of two adjacent webs (70, 72) in the region of their longitudinal edges for joining said two webs, wherein the webs (70, 72) with the first hook-and-loop fastener elements (50) are laid out adjacent one another, the touching longitudinal edge regions (76) of two webs (70, 72), beginning at one end thereof, are lifted for a short section at a time and bent upwards and, beginning at said specified end, said second hook-and-loop fastener element (52) is inserted from above into the gap thus opened between said two webs (70, 72) and laid under said webs, whereupon the longitudinal edge regions (76) of said two webs are lowered onto said second hook-and-loop fastener element (52) and joined together via said element.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a surface coating web consisting of an upper surface provided with a pile and a lower surface provided at least partially with a coating material. In particular, the present invention relates to so-called artificial turf used for sports fields and the like. The artificial turf according to the present invention is preferably used outdoors, but can also be used indoors.

Known webs of this type have a knitted or woven base in which pile threads are fastened, and on the underside of which a flexible coating, in particular a soft polyester, is applied. Coated with vinyl chloride (PVC). It is also known to attach a backing element to a textile base provided with a pile, if the back side of the textile base is partially coated in order to better secure the pile threads,
This backing element essentially consists of a core layer of fibers coated with a coating, in particular a flexible polyvinyl chloride (PVC). The backing member may form a completely dense layer or may have vertical openings therein.

In the special case of use in playgrounds, it is now necessary that the surface coverings be easily removable. For example, at times it is necessary to be able to play certain sports on hard surfaces, and at other times it is necessary to play football, hockey, etc. on grassy surfaces.

This requirement is met according to the invention by means of surface-coated webs of the type mentioned at the outset of this specification, at least along one edge of these webs, where the thickness of the layer of coating is greater than the thickness of the web in strip-like areas. a first element of a hook loop fastener, which is not as thick as in the proximate area of the tape and which additionally comprises a loop tape and a hook tape, is attached to the strip area;
This is achieved by having the second element of the hook loop fastener join two adjacent webs. When forming a playing field with artificial turf, the webs are simply placed next to each other in contact, thereby creating the so-called hook loop.
Connected to each other by fasteners, the webs can therefore be easily detached from each other and rolled up to remove the artificial turf.

The so-called loop tape of known hook-loop fasteners is a textile tape formed as a looped brushed top, which captures the upward pile elements of the hook tape in the plush loop when the hook tape and loop tape are pressed together. The pile element of a hook tape is a section of stiff plastic thread, the upper free end of which has a hook or mushroom head.

The loops and hook tapes described above may be small sections of tape attached to the ends of the web and spaced apart from each other.

In order to complete the surface height of the surface covering, the height of the recess formed by the strip area corresponds, in a preferred embodiment of the invention, at least approximately to the thickness of the hook loop fastener.

In principle, the hook loop fastener 1
One or two elements may be attached to the web as desired. Since the coatings conventionally used are also good adhesives, in manufacturing the webs of the present invention, one element of the hook loop fastener is placed on the underside of the web prior to setting the coating, i.e. In preferred embodiments of the web of the invention, it is recommended that the first element of the hook loop fastener be bonded to the web by a coating. Since particularly effective coatings polymerize or condense due to thermal effects and/or thermal phenomena, it is recommended to bond to the web a loop tape of a hook-loop fastener that is not sensitive to such thermal effects.

In producing the surface coating with backing member described at the beginning of this specification, the fiber core layer is coated by being dipped in the coating agent. In this case, the specific recess is particularly easily formed by at least partially removing the coating of the strip area before its setting, in particular by wiping it off with the aid of a doctor blade or the like.

In this way, trimming and the like in the next process become unnecessary.

A particularly simple mounting method is also proposed according to the invention. With this method, the web is lined with first hook-loop fastener elements attached such that their longitudinal ends are close to each other;
Adjacent longitudinal edges of the two webs are lifted a short section at a time from one end of the web, bent upwards, and a second tape-like hook is inserted from that particular end.
A loop fastener element is inserted from above into the gap opened between the webs, and then the longitudinal ends of the two webs are lowered onto a second hook loop fastener element and connected to each other by this element. The simplest way to implement this method is with the following device according to the invention.
That is, the device uses a tool similar to the tip of a plow for opening a gap between two adjacent webs;
characterized by a member for holding a supply of the second hook loop fastener element and a member for deflecting the second hook loop fastener element, the deflection member being in particular formed as a rotatably mounted roller; and located slightly above the lower edge of the tool. It is only necessary to fix one of the tapes of the hook-loop fastener, in particular the hook tape, to one end of the two webs to be joined to each other, for example by nailing it to a backing member. The device is run along the contact area between two adjacent webs, and at the same time a hook tape is placed below the two webs, so that when the longitudinal edges rest on the hook tape, the two webs are separated by this hook tape. combined with each other.

Other features, advantages and details of the invention are set forth in the following description and drawings which illustrate preferred embodiments of the method and apparatus for placing a web according to the invention.

The piece of artificial grass shown in FIG. 1 has a fibrous, in particular woven, base 12 to which is fastened a small pile strip 14 obtained by spinning a plastic material. Pile strip 14 fixed to the base
A rib-like protuberance is formed on the underside of the base 12 by means of a coating material 16, which protrusion is coated with a coating material 16 and attaches the small pile strip to the base 12. The coating 16 consists essentially of a thermoplastic material, particularly preferably polyvinyl chloride (PVC). Since the base 12 is loosely knitted between the covering ribs, it is water permeable.

The piece of elastic, water-permeable backing member 20 shown in FIG. , is covered by. This coating covers the burl protrusions 26 on the lining member 20.
Form on the back side of There is a vertical linear opening 28 between these protrusions.

FIG. 3 shows a top view of a small piece of fiber core 30 of backing member 20, which fiber core is formed by a lattice knitting machine in the preferred embodiment of the invention, and portion 3
4 are spaced apart from each other at a predetermined interval, and the threads 22
It is provided between mesh rows 32 formed by.
The plastic strips 36 are guided back and forth between the mesh rows in a staggered manner. When such a structure is immersed in a liquid plastic substance and subsequently set, for example by thermal effects, and the backing member thus produced is held horizontally, the nodes shown in FIG. A bead 26 is automatically formed on its underside. The structure shown in FIG. 2 is therefore very easily produced according to the description herein.

FIG. 4 shows a small piece of a modified backing member 20' having a knurled projection 26' and an aperture 28', which differs from the embodiment shown in FIG.
9' is an opening 28' in the upper surface of the backing member 20'.
The only difference is that a trough-like recess 27' is formed between these protrusions. The bulge-like protrusion 29' is formed by applying the manufacturing method of the backing member according to the present invention to the portion 34 of the covering material before fixing it.
This can be easily achieved by slight deformation to allow a slight overflow beyond the edges of the (FIG. 3) and to whisk the coating material if necessary.

FIG. 6 shows a cross section of a small portion of a tape-like portion of a known so-called hook-and-loop fastener. A so-called loop tape is designated at 50 and a so-called hook tape is designated at 52. Both tapes have tape-like fibrous bases 54, 56.
6 is often double-covered or laminated with plastic. Brush top loop 5 of loop tape 50
8 is fastened to the base 54, while a hook 60 made of relatively stiff plastic thread and having a mushroom-shaped head at its free end is attached to the hook tape 52.
It is fixed to the base 56 of.

Two surface coating webs 7 arranged close to each other
5, which shows a cross-section viewed from the opposite longitudinal ends of the webs 0 and 72, shows that each web consists of an artificial turf 10 and a backing member 20, the upper surface of which is covered with a coating on the artificial turf, for example. 16 is bonded to the underside of the artificial turf by any suitable method, such as by heat sealing 16 to the coating of backing member 20. The strip area is the contact area 74 between the two webs 70, 72.
In the strip areas 76 of the backing members of both webs, the soft polyvinyl chloride (PVC) material of the coating 24 has been partially removed from the lower surface to form strip recesses 78, and these recesses A loop tape 50 is attached to each of the tapes with the plush loops facing downward. These two loop tapes and webs 70, 72 are joined together by hook tape 52 connecting contact area 74. The bonded web is also easily removable according to the invention.
FIG. 5 further shows the hook used in the present invention.
It is shown that the loop fasteners 50, 52 are not protruded by the recess 78, and the web does not arch up at the contact area 74.

FIG. 7 shows a perspective view of the two webs 70, 72 that are in contact with each other after being placed on the installation surface, as seen obliquely from above. This figure also shows an auxiliary device for joining webs according to the invention, which device has a guide frame 100.
A plow-tip shaped member 106 is attached to the holder along with a spindle 102 which holds a supply 104 of hook tape. A roller 108 for changing the direction of the hook tape 52 is further attached to the guide frame 100.
It is rotatably supported directly above the tip of the plow.

According to the invention, the plow tip 106 is formed as follows. That is, two webs 7
A contact area 74 of 0.72 is opened by the plow tip 106 as shown in FIG. hook tape 5
2 is thus inserted between the longitudinal ends of the webs 70, 72, the webs are lifted upwards and forced laterally apart from each other by the plow tips, and placed below these webs. Once the insertion of the hook tape is started at one end of the two webs 70, 72 and the free end of the hook tape is secured to this end, the tape is unwound as it moves along the contact area 74 in the longitudinal direction of the webs. and placed below the two web loop tapes 50. When the longitudinal ends of the two webs are then withdrawn to the hook tape at the rear of the apparatus shown in FIG.
A firm bond is thus achieved between the two contact webs 70, 72.

The web is laid loosely on the corresponding surface. The web is further bonded to the surface with the aid of a hook tape whose underside is coated with adhesive. The direction of operation of the installation device is indicated by arrows in FIG.

The plow tip attached to the lower end of the frame 100 has an isosceles triangular shape with concave sides when viewed from the front, and the upper longitudinal end of the plow tip formed from the triangular tip 1 in Figure 7
It is shown as 06. The tip of the plow is the direction changing roller 108
It ends in front of the hook tape 52 and leaves a gap for the hook tape 52 to pass through. It goes without saying that the contact area 74 is forced open sufficiently by the plow tip to insert the guide frame 100 with deflection roller into the gap.

[Brief explanation of the drawing]

FIG. 1 is a perspective view from below of the artificial turf, FIG. 2 is a perspective view from above of such a lining member for artificial turf, and FIG. 3 is a plan view of the fiber core of such lining member. 4 is a perspective view similar to FIG. 2 but of a variant of the backing element according to the invention; FIG. 5 is a sectional view through the contacting longitudinal edges of two facing webs according to the invention; FIG. 6 is a cross-sectional view of the loop tape and hook tape of a known hook-loop fastener, and FIG. 7 is a perspective view of the device according to the invention for joining longitudinal sections of two webs in use. 20...Backing member, 24...Coating material, 50...
...Loop tape, 52...Hook tape, 70,
72... Web, 76... Band-shaped region, 78... Recess, 102... Holding member, 106... Tool, 10
8... Laura.

Claims (1)

Claims: 1. A first hook-loop fastener element is placed on the web with their longitudinal edges adjacent to each other, and both contacting longitudinal edges of the two webs is lifted and bent upwardly from one end of the web, one short section at a time, and from that particular end, a second hook loop fastener element in the form of a tape is inserted from above into the gap opened between the webs. A method for attaching webs, characterized in that the longitudinal edges of the two webs are then lowered onto a second hook-and-loop fastener element and connected to each other via this element. 2. A tool 106 similar to a plowhead tip for opening a gap between two adjacent webs, a member 102 holding a source of a second hook loop fastener element 52, and a second hook loop fastener element 52. web application device, characterized in that the deflection member is in particular designed as a rotatably mounted roller 108 and is arranged slightly above the lower edge of the tool 106.