In order to beautify lawns, gardens and other outdoor grounds, edging components or mulch and the like are used to define edges and borders around lawns, trees, and other plant life. Conventional edging materials are intended to present a manicured appearance and to prevent grass and weeds from growing in undesired areas.
Edging components may be colored green, brown, or black, yet still present an unnatural appearance when manufactured from metal or plastic. Wooden edging components, even if chemically treated, become aesthetically unpleasing as they fade and deteriorate due to weather exposure.
Mulch also suffers from many drawbacks. Typically, mulch washes or blows away or decomposes over time and must be replenished at least seasonally. Therefore, mulch is not cost effective over time, especially when accounting for repeated labor to replace the mulch each season. Moreover, mulch tends to stick to shoe soles to be tracked into homes and buildings, especially if the mulch is wet due to rain or watering.
A shared drawback of conventional edging and mulch is color limitation. Conventional edging and mulch can not simply be inverted or reversed to reveal a different color if a homeowner desires to change a landscape.
A multi-colored edging system is needed in the lawn and garden care industry to offer consumers a greater choice at a reasonable cost.
The present disclosure is directed in general to multi-colored edging or edging systems and mats made from recycled rubber. The edging systems are used to create natural but manicured edges along walkways and around trees, shrubbery, flower beds, posts, poles and the like to define lawn boundaries and to inhibit grass and weed growth along these edges. The mats, which are produced similar to the edging systems, are used to create larger manicured edges or areas for situating water hose storage carts, outdoor garden supply sheds, playground equipment and the like in order to render mowing or trimming around or under such items unnecessary.
The multi-colored edging systems and mats—collectively, referred to herein as pads—are made, for example, by recycling a waste product such as used rubber tires. The multi-colored edging systems and mats may have a variety of color combinations; for instance, brown on one of their sides and red on the opposite side. Accordingly, a home improvement store, garden store or the like need only use one section of limited floor or shelf space and still be able to offer a choice of at least two colored products to consumers. Thus, while one consumer may want a brown mat and another consumer may want a red mat, both consumers can each purchase one of the brown-red mats and simply place the desired color facing up to create their respective mulch-like areas. Moreover, where the store previously had offered only a choice of brown and red mats—each occupying a section of floor or shelf space—the store can now offer another color combination such as mats having green on one side and black on the other, thus doubling consumer choices in this example to four colors using the same two sections of floor or shelf space.
Evident from the foregoing introduction, the component parts and ingredients of the multi-colored edging systems and mats are simple and economical to manufacture and use. Other advantages of the invention will be apparent from the following description and the attached drawings or can be learned through practice of the invention.
According to an exemplary process of the present disclosure, a mold is manufactured to half the desired thickness of the finished product. Rubber is mixed with binder and pigment. The resultant mixture is weighed and placed into the mold then smoothed and leveled in the mold. The compacted mixture is conveyed to a second mixing station, and a square, rectangular or other shaped frame with an inside area equal to the outside area is placed over the first mold. The frame may have a ledge protruding inward to facilitate seating the frame onto the mold. A second color is poured into the mold, compacted and cured. After curing, the frame is removed and the finished product extracted from the mold. Finished edging systems or mats are packaged for shipping and sale.
In producing functionally useful edging systems or mats, it is also desirable that the edging systems and mats have a natural aesthetic appearance; i.e., an indigenous mulch-like appearance. However, rubber tire particles are typically coal black, while the binder coating them typically is clear, or may be yellowish in appearance. Frequently, such binder/granule mix, when cured, may have an undesirable color and/or sheen or gloss. Accordingly, the disclosure provides edging systems and mats from ground-up, waste rubber and a binder, and means for controlling the appearance of the cured edging systems and mats to provide desirable color and aesthetics.
Specifically, to produce edging systems or mats according to an aspect of the disclosure, a binder (e.g., urethane) is utilized and is mixed together with pigment to provide a desirable color. This binder-pigment mixture is mixed with a catalyst to promote curing and with the ground rubber and fibers. This mixture is then molded into a desired shape and a diatomaceous earth or silica is sprinkled over the uncured mixture to produce a desirable anti-gloss effect in the cured edging systems or mats so produced.
According to another aspect of the disclosure, a rubber pad includes a first rubber surface being configured for contacting ground, the first rubber surface having a first color and a plurality of rubber components configured to appear as mulch, the first color being cured with the rubber components; a second surface opposite the first surface, the second surface being configured for alternative contact with the ground, the second surface having a second color different from the first color and a plurality of the rubber components configured to appear as mulch, the second color being cured with the rubber components; and a binder holding the respective first and second rubber components together. In this aspect, the pad may be a rubber mat or a rubber edging system.
The first and second colors in this aspect may be red, white, brown, green, blue, sandstone or black, the first color being different from the second color. The first and second colors are derived from respective coloring pigments.
Also in this aspect, the rubber pad may have a thickness of about 0.5 inches to about 1 inch.
Further in this aspect, the first and second rubber components may be rubber buffings, rubber granules or combinations thereof. The rubber buffings and rubber granules may be derived from used rubber tires, or other used or natural rubber sources or other elastomeric materials.
Also in this aspect, the binder may include a moisture curable urethane. A curing catalyst and/or an anti-gloss agent may also be added.
The rubber pad may also include an interlock configured to mate the rubber pad with a complementary rubber pad.
In another aspect of the disclosure, a method of manufacturing a multi-colored rubber pad may include providing a mold; mixing together a rubber component, a binder and a first coloring agent to form a matrix having a first colored surface; and introducing a second coloring agent onto the matrix to create a multicolored rubber pad having a second colored surface opposite the first colored surface.
The mold in this aspect may have a height of about one-half inch to about two inches, the height being about half a desired thickness of the rubber pad. The mold may also have an area of about twelve square inches to about forty square inches.
Further in this aspect, the rubber component may be leveled with the binder and the first coloring agent. Also, the rubber component, the binder and the first coloring agent may be cured such as by removal of moisture; e.g., air drying. However, the curing may be accomplished by a chemical reaction. The curing may also be accomplished by heat, compression, adhesive, and combinations thereof.
Still further in this aspect, a plurality of fibers may be mixed with the rubber component, the binder and the first coloring agent. A catalyst may also be mixed with the rubber component, the binder and the first coloring agent. The second coloring agent may be leveled and cured.
Also in this aspect, the mold may be joined with a cap. The mold may include a peripheral lip and a projection, the projection depending from the peripheral lip. The cap may include a ledge defining a shoulder, the projection and the ledge complementarily shaped to seat the cap and the mold together. Still further, one or both of the first and second colored surfaces may be embossed such as with an embossing roll such that each surface has a different texture.
Accordingly, edging systems or mats of the composition according to the present disclosure can be used over ground to delineate lawn edges or outdoor equipment storage areas. Moreover, due to their multiple colors, the products save storage and sales space; i.e., one multicolored edging systems or mats is attractive to different consumers having different landscaping needs.
The above and other aspects and advantages of the present invention are apparent from the detailed description below in combination with the drawings, in which:
Detailed reference will now be made to the drawings in which examples embodying the present disclosure are shown. The detailed description uses numerical and letter designations to refer to features of the drawings. Like or similar designations of the drawings and description have been used to refer to like or similar parts of various embodiments according the disclosure.
The drawings and detailed description provide a full and detailed written description of the disclosure and of the manner and process of making and using various embodiments, so as to enable one skilled in the pertinent art to make and use them, as well as the best mode of carrying out the disclosure. However, the examples set forth in the drawings and detailed description are provided by way of explanation of the disclosure and are not meant as limitations of the disclosure. The present disclosure thus includes any modifications and variations of the following examples as come within the scope of the appended claims and their equivalents.
Turning now to the figures, according to one aspect of the disclosure edges of a path or walkway 10 may be defined and manicured using an edging system, which is designated in general by the element number 12. As broadly embodied in
With particular reference to
Although the edging system 12 in
The exemplary edging system 12 shown in
Also as briefly introduced above, mowing or trimming around the edging system 12 of
With more particular reference to the example shown in
Turning now to
With reference now to
The skilled artisan will instantly appreciate that although the sides 220, 222, 224, 226 of the mats 212 in
Turning now to
With particular reference to
With reference to both
As further shown in
Alternative means of providing different colored surfaces 16, 18 include painting one or both of the surfaces 16, 18 after the mixture 48 has cured. However, paint has been found to dry around individual fibers of the edging system 12, leaving black-appearing open spaces and thus, a less natural appearance. Paint also has a tendency to chip or peel away after prolonged exposure to weather and wear.
Another alternative coloring means is to form two separate edging system components, each having different colors. After curing, the two components may be glued or heat-pressed together using, for instance, a urethane bond. However, this multi-coloring alternative is more expensive than other methods described herein and may result in a lower grade product that is more susceptible to separation.
With reference now to
If rayon, nylon or other such materials were used in the tires 610, the discrete fibers 38 of such materials, about one inch or less in length, may also be a byproduct of shredding, mulching, granulating or buffering the tires 610. More specifically, the general range of ratios of all edging system or mat materials by weight is from about 9 or 10 to about 4 or 5 to 1 with the preferable ratio being about 8 to 1. The voids to solids volumetric weight ratio is about 1 to 10.
With reference to both
As noted above, the finished product 12 should be as natural in appearance as possible. Accordingly, color and sheen are controlled. The coloring agents 42, 44, briefly introduced above, may be an iron oxide pigment, No. 4701, manufactured by PDI of ICI Americas, Inc., or any other suitable pigment. To control sheen or gloss for a more natural-like appearance, the coloring agents 42, 44 may include an anti-gloss agent, or a separate agent such as diatomaceous silica, such as celite #499 manufactured by Manville Filtration and Minerals, may be used. The diatomaceous silica is, for instance, sprinkled on the surface of the uncured, molded mixture 48 to provide an anti-gloss effect. The skilled artisan will appreciate that any suitable pigment and anti-gloss additives may be used.
Finally, as shown in
By way of example, the final mixture 48 by weight may be about 12 to 14% rubber granules 611; 75% to 77% 12 to 14% rubber buffings 613; about 0 to 2% fiber 38; about 11% binder 40; about 2 to 5% coloring agent 42, 44 by weight of total binder; about 0.01 to 0.03% catalyst 46 by weight of total binder; and about negligible percent U.V. light stabilizers and anti-oxidants. Such a mixture 48, when cured, weighs about 1.25 grams per cubic centimeter, and has a solids-to-voids volumetric ratio of about 5 to 1. Of course, this ratio can be adjusted by varying the sizes of the rubber granules 611 and/or the rubber buffings 613. For example, an increase in particle size will generally provide more air volume while a decrease in particle size will generally provide less air volume.
While preferred embodiments of the invention have been shown and described, those skilled in the art will recognize that other changes and modifications may be made to the foregoing examples without departing from the scope and spirit of the invention. For instance, dimensions such as areas of the products can be changed to accommodate various walkway requirements. Likewise, different rubber or other durable elastomeric materials can be used to manufacture the products described herein. It is intended to claim all such changes and modifications as fall within the scope of the appended claims and their equivalents. Moreover, references herein to “top,” “bottom,” “upward,” “upper,” “higher,” “lower,” “downward,” “descending,” “ascending,” “side,” “first,” and “second” structures, elements, designations, geometries and the like are intended solely for purposes of providing an enabling disclosure and in no way suggest limitations regarding the operative orientation or order of the exemplary embodiments or any components thereof.
The present application is a continuation-in-part application of and claims priority to co-pending U.S. patent application Ser. No. 11/742,809, filed May 1, 2007, entitled “Stepping Stones Made of Recycled Material and Related Manufacturing Methods” and U.S. patent application Ser. No. 11/742,853, filed May 1, 2007 entitled “Edging and Mats Made of Recycled Material and Related Manufacturing Methods”.
Number | Date | Country | |
---|---|---|---|
Parent | 11742809 | May 2007 | US |
Child | 11776294 | US | |
Parent | 11742853 | May 2007 | US |
Child | 11742809 | US |