MXPA96005960A - Method for installing a backing carpet with buc - Google Patents

Abstract

The present invention relates to a method for installing a carpet with loop backing, characterized in that it comprises the following steps: (a) installing the tape having hooks facing upwards on a floor, the hooks are removably covered to avoid premature bonding of the hooks to the carpet; (b) loosely placing a carpet that has a loop backing over the top of the belt; (c) applying water to the carpet to allow carpet fibers to absorb water; (d) wait for a period to allow the carpet to achieve substantially maximum expansion; (e) remove the tape cover to join the carpet to the floor in its substantially expanded state;

Description

METHOD FOR INSTALLING A BACKUP CARPET WITH LOOPES DESCRIPTION This invention relates to a method for installing a backrest rug with loops by a hook and loop installation structure. Traditionally, wall-to-wall carpets have been installed either by gluing them to a concrete floor (in commercial facilities) or by stretching between staggered rows of steel nails (such as in the "uniform edge" installation Roberts ). In U.S. Patent 4,822,658 dated April 18, 1989, a new carpet installation system is described, in which a carpet is constructed to have a backing consisting substantially of loops to be installed by the carpet. A tape with hooks attached to the floor by pressure sensitive adhesive. However, even with this system, certain carpet products such as those made using synthetic nylon fiber, can have significant atmospheric dimensional stability problems. These problems are based on the fact that the nylon absorbs moisture at an index of approximately 6% of its weight and expands at an index of approximately 30% of its size.

It seems that certain manufactured products present more of a problem than others. Many reasons are contributing factors, for example the type of manufacturing process used and the type of material (latex, C.V.A., polyurethane, etc.) used to encapsulate and stitch the bundles of fibers that are stitched through the primary backing. A real problem is that an on-site carpet installer is unaware of any weather impediment problem until it is too late. Once the carpet has been installed in the perimeter and the capacity is known to grow in the perimeter, it is eliminated and any growth by itself will manifest itself in the form of undesirable loops and wrinkles, etc. The growth that occurs is often caused by atmospheric oscillations in humidity, which can occur. Such oscillations are more common in constructions which are not controlled in climate and temperature. Attempts to control this loop formation have focused on (a) glueing the carpet along its entire bottom surface; (b) displace the expansion of the nylon fiber by increasing the weight and stiffness of the carpet by the addition of glass fiber as a stabilizing factor; or (c) use a hook and loop system to join the carpet through its entire bottom surface. The increased use of fiberglass can give the carpet greater initial dimensional stability but does not completely solve the problem. In fact, in some situations such increased glass fibers can make loop formation worse, if the carpet is not rigid enough to withstand the expansion forces. More significantly, the increased stiffness makes it much harder to maneuver, roll up, stretch and cut the carpeting. It can be very difficult to attach the pattern in such a way that the carpets as there is little or no "gives" in the carpet by which the carpet is adjusted to match the patterns. It has also been treated, with varying degrees of success, alizar and regularities in hand-stitched seams of wool carpets that are developed and cooked by treating the jute backing of the stitched area with small amounts of hot water. The spray of hot water on the jute backing in the seam can contract the carpet and therefore reduce the localized unevenness. Now it has surprisingly been found and contrary to the installation techniques currently performed, that the carpet can be installed advantageously by a method, which first acclimatizes the carpet for possible expansion, due to moisture adding water to the carpet and then fixing the carpet. carpet to the floor in its expanded state. The amount of moisture that is required to expand, for example, nylon and the time required to wait for the carpet to achieve maximum expansion are such that it is very feasible to apply water to the carpet during installation, without significant installation delay. In addition, a hook and loop system allows the carpet to be held in place in its expanded state after the carpet has dried and in any other way tends to return to its contracted state. This allows the carpet to retain its shape, after being closed. In addition, it has now been found that the carpet also does not expand or form loops yet. with the subsequent cycles of humidity and drying. Thus, the invention in one aspect, consists of a method for installing a carpet with loop backing comprising the following steps; (a) installing the tape that has hooks that face up on a floor, the hooks are removably covered to prevent premature attachment of the hooks to the carpet, (b) loosening the carpet layer that has a loop backing over the top of the belt, (c) applying water to the carpet to allow the fibers of the carpet to absorb water, (d) waiting for a period to allow the carpet to achieve substantially maximum expansion, (e) removing the tape cover for attaching the carpet to the floor in its substantially expanded state. In another more general aspect, the invention is simply to moisten the carpet to allow it to expand, wait for it to expand and then install it on the floor with a hook and loop system. In a more specific aspect of the invention, the method consists in installing a carpet with loop backing, which comprises the following steps: (a) installing the tape having hooks facing up on a floor, the hooks are covered removably to prevent premature bonding of the hooks to the carpet, (b) loosen the carpet layer having a loop backing over the top of the ribbon, (c) remove at least some of the tape cover for attaching the tape to the floor, (d) applying water to the carpet to allow the carpet to absorb water, (e) waiting for a period to allow the carpet to achieve substantially maximum expansion, (f) unhooking the carpet from the tape at at least some areas for releasing pressure and the loops created by the carpet expansion, (g) gathering the carpet to the belt in a substantially expanded state. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a view of a carpet installer spraying a carpet. Figure 2 is a sectional view showing two carpet strips overlapped after wetting before release of the loop expansion. Figure 3 is a sectional view showing two carpet strips overlapped after the release of the loop expansion and before the final cut. In the Figure there is shown a carpet 1 installed loosely on a floor on the carpet tape 3. The tape initially has a cover 5 of the tape, which prevents the union of the loops on the back of the carpet 1 to the hooks on the belt 3 (as best shown in Figure 2, until the belt cover has been removed) In Figure 1 the carpet installer 7 has a container 9 with pressurized, simple water having a hose 11 and a spray nozzle 13. Such water cans are typically pressurized by a manual pump 15 on the top of the can and can easily hold 3.79 liters of water.The installer 7 simply passes the spray head 13 through the carpet in a sufficient number of passes to deposit approximately 3.79 liters of water per 83 square meters In Figure 1 since the carpet 1 is not attached to the belt 3, the carpet will simply grow after it has been hu medecida, assuming that it is made of an artificial or synthetic material which grows when it is moistened. Nylon is the most common of such materials and will absorb water up to a gain of 10% by weight and 30% by size. It has been found that this absorption is carried out in a typical carpet, where the water is applied by spraying on the upper surface for a period of about 4 hours. The water would also apply to the back of the carpet (assuming the carpet does not have a waterproof backing) or immediately to the floor when the carpet is unrolled. The moisture, however applied, will be easily absorbed by the nylon fibers. An experiment was made using a nylon carpet from Peerless Carpet, Montreal, Canada. This nylon carpet was sent to Textile Rubber for backing with a thermosetting polyurethane elastomer and then washed with a backing of woven loops.

The carpet was attached to a concrete floor in its perimeter by the use of a tape with hooks and then it was sprayed with water from a water container from the top as shown in Figure 1 until the water was visible in the hair when the hair was pressed with a finger. In one hour the loop formation of the carpet was visible. Restricted around its perimeter, the carpet formed loops only along one direction. The loops continued to increase for 4 hours. At 4 hours the carpet achieved maximum expansion or loop formation. The loop remained on the carpet for about 2 hours and then started to recede. Subsequent tests have proven that in most nylon mats currently available, substantial maximum expansion is achieved in 4 hours. In addition, if the carpet is equally joined along its perimeter edges or is not joined at all, the expansion usually only occurs in one direction along the seam with carpet machines. This seems to be the path of least resistance. Thus in carpet strips, expansion usually occurs along with the narrow width of the strip or not along the length. In subsequent experiments, the carpet was attached to the floor as described in the first previous experiment.

After the carpet achieved the maximum loop formation in 4 hours, the carpet was removed from the appointment to release the pressure caused by the formation of the loop and lugo met the tape. After the carpet dries, it does not come off the tape and remains in an acclimatized state, even after repeated wetting and drying cycles. Further experiments with this acyl-powered carpet in a controlled temperature and humidity store have shown that such carpet does not loop or move when exposed to temperature and humidity cycles, even when exposed to 90% humidity for 3 days. It will be appreciated that under normal circumstances, carpets are generally in air conditioning, climate controlled environments and that it would be rare for the humidity level in a room to have exceeded 90% for more than 3 days. This can happen, however, in the case of a fault in the air conditioner. The carpet grows mainly only in one direction (typically the width of a roll) along the seam of the machine. This is possible to install the carpet on ribbons in anticipation of its growth. If the carpet is first attached to the floor, a visible loop formation can be observed after the application of water as an indication that the carpet has grown. In this manner as shown in Figure 2, the tapes 18 and 19 are attached to the floor, initially with a cover (not shown). The carpet strips 21, 23 and 25 (or any number of additional carpet strips) are placed on the ribbons and cover strips, such that the seam is on the belt. Since it is usually only necessary to redo each of the other seam to release the tension that occurs from growth for example in the carpet piece 23, the seam 27 can be finished between the carpet piece 21 and 25. The installer will normally leave a slight overlap at each other seam, for example, between the carpet piece 23 and the carpet piece 21. This ensures that there is room for the carpet to overlap to create a uniform seam, even if the carpet does not It grows significantly after wetting. . In the normal case, the pieces of carpet would be joined in at least the tapes below the longitudinal seams. However, the carpet piece 21, for example, would only be partially attached to the belt 19 as shown allowing an overlap. Figure 2 shows the arrangement after preliminary, initial installation and after the addition of water to the surface of the carpet. Water sprayed on the carpet as shown in Figure 1, will normally result in the formation of the loop 29 along the width of the carpet as shown in Figure 2. Although the carpet, of course, is narrower in width and length, the carpet generally expands to along the width of the seam of the machine along the path of least resistance. It is possible for some expansion to occur in length, but this has not been observed in the experiments to date. This, however, could easily be adapted by the release and re-joining of the carpet at the ends, as required. After the loops 29 have reached a certain size, in about 4 hours, an experienced installer will have a visual idea that (a) he has sprayed that particular carpet strip and (b) the strip has reached its maximum level of expansion .- Then the installer can release the pressure of the loop for example, in the piece 21 and the piece 23 by removing the pieces of carpet from the tape 19 and expand them to eliminate the loops 29. The piece 21 and 23 of this form they will overlap in the tape 19 as shown in Figure 3 and the installer can then cut along the top of the tape at 31 as shown in Figure 3 to create a uniform seam. Excess pieces 33 and 35 as shown in Figure 3 can be discarded and a uniform seam can be achieved.

This invention is useful for any natural or synthetic fiber used in carpets, which grows or expands with the addition of water. Nylon is the most common of such synthetic fibers. Further, although the invention has been described with a loopback carpet and hook tapes (the commercially advantageous form of a hook and loop system) it is equally applicable to a loop tape and a carpet with hooks.

Claims (18)

1. CLAIMS 1. A method for installing a carpet with loop backing, characterized in that it comprises the following steps: (a) installing the tape having hooks facing up on a floor, the hooks are removably covered to prevent premature bonding from the hooks to the carpet, (b) loosely placing a carpet that has a loop backing over the top of the tape, (c) applying water to the carpet to allow the fibers of the carpet to absorb water, ( d) waiting for a period to allow the carpet to achieve substantially maximum expansion, (e) removing the cover from the tape to join the carpet to the floor in its substantially expanded state. The method according to claim 1, characterized in that after step (d) the carpet is cut and adjusted to a quarter or adjacent pieces of carpet, while in an expanded state. The method according to claim 1, characterized in that step (b) comprises loosely placing multiple overlapping carpet strips together and trimming such pieces together after step (d) although in the expanded state, to achieve a uniform joint between such parts. 4. The method according to claim 1, characterized in that the carpet has nylon hair. 5. The method of compliance with the claim 4, characterized in that the waiting period of step (b) is at least two hours. 6. The method according to claim 4, characterized in that the waiting period is at least 4 hours. 7. The method according to claim 6, characterized in that the waiting period is not more than 6 hours. 8. The method according to claim 1 or 7, characterized in that the. Water is applied as a mist or spray to the top of the carpet. The method according to claim 8, characterized in that the water is applied at an index of not less than 3.79 liters per 83 square meters. A method for installing a carpet with loop backing, characterized in that it comprises the following steps: (a) installing the tape having hooks facing upwards on a floor, the hooks are removably covered to prevent premature bonding the hooks to the carpet, (b) loosely placing the carpet that has a loop backing over the top of the tape, (c) removing at least some of the tape cover to attach the carpet to the floor, (d) applying water to the carpet to allow the carpet to absorb water, (e) waiting for a period to allow the carpet to achieve substantially maximum expansion, (f) disengaging the carpet from the belt in at least some areas for releasing pressure and the loops created by the carpet expansion, (g) gathering the carpet to the belt in its substantially expanded state. The method according to claim 10, characterized in that the water is applied as a mist or spray to the upper part of the carpet. 12. The method according to claim 11, characterized in that the water is applied at an index of not less than 3.79 liters per 83 square meters. The method according to claim 10 or 12, characterized in that the waiting period is at least 3 hours or not more than 6 hours. 14. The method according to claim 12, characterized in that the carpet is installed in strips and the belt is installed on the floor generally for alignment below the longitudinal edges of the carpet strips. 15. The method of compliance with the claim 14, characterized in that at least some of the longitudinal edges of the carpet strips overlap each other and are joined to the floor during step (c) in an overlap relationship. 16. The method of compliance with the claim 15, characterized in that only the overlapping pieces are disengaged during the step (f) and then they are re-installed in an overlap relationship during the step (g) and comprising the additional step (h) in which the connection between the pieces overlapping is done by cutting both pieces along the overlap, to achieve a coupled seam and discard the unused edge pieces. 17. A method for installing a nylon carpet with loop backing, characterized in that it comprises the following steps: (a) installing the tape having hooks facing up on a floor, the hooks are removably covered to prevent binding prematurely attaching the hooks to a carpet, (b) loosely placing carpet strips that have a loop backing over the top of the belt, and in which at least some strips overlap an adjacent strip along the length of the belt. a longitudinal edge of the strip, (c) removing at least some of the tape cover for attaching the carpet strips to the floor substantially along its longitudinal edges, (d) applying a spray of water to the carpet yet index of at least 3.79 liters per 83 square meters, (e) wait for a period of at least 4 hours and no more than 6 hours to allow the carpet to achieve substantially maximum expansion, (f) separate strips from Shade the tape in at least areas to release pressure and loop formation by expanding the carpet, (g) gathering the carpet strips in a substantially expanded state to the tape, overlapping an adjacent strip. (h) Cut the longitudinal edges of both of the carpet strips along the overlap to achieve a uniform joint and discard the cut pieces. 18. A method for installing a carpet having a fiber, which expands when wetted, characterized in that it comprises the steps of: (a) moistening the carpet (b) expecting it to expand (c) installing on a floor, while It is still in its expanded state using a hook and loop attachment system.