The invention pertains to mattresses and manufacturing methods thereof.
Conventional mattresses are generally formed of some rigid yet conforming material at a core surrounded by fabrics or other materials more suitable to contact with the skin. For example, a conventional mattress might have a core of spring coils or dense foam encased in a layer of quilted fabrics. When the conventional mattress is manufactured, all components including fabrics, foam cushioning layers, and the mattress core units are warehoused at the final manufacturing facility. Modern mattresses for the covers or coverings have multiple and integrated layers of materials. Specialized cutting equipment form the accurately sized layers of materials, including loose low density fiber layers, foam layers, panels of interior fabric, and panels of exposed exterior fabric. Specialized equipment can quilt or bind layers for top panel components and sidewall border components. The layers and panels are positioned about the mattress core and a specialized tape edge machine rotates about the core with materials thereon, or the core is rotated with respect to the tape edge machine and the multiple layers are permanently affixed in an attractive tape edge seam. Although the specialized equipment allows mattresses to be manufactured in relatively short time frames, the equipment still needs trained/skilled labor and the assembly operations can be tedious.
As industries have become more specialized, it can be advantageous to source components from different locations and assemble them closer to a final destination or distribution point. Certain countries have become proficient in manufacturing textiles and efficiently producing high quality fabrics, such as those utilized for surrounding the core of a conventional mattress, at low costs and shipping them overseas. However, shipping finished products overseas can be expensive and much of the cost is attributable to the size of the product. Large, bulky products, even if lightweight, can be prohibitively expensive to ship overseas. While textiles on their own may generally be folded/rolled down to fairly small sizes, when they are permanently affixed around other structures, the end products can be large and expensive to ship. Although economies have driven many products in the furniture industry to be manufactured in Asia, mattresses sold in the U.S. are for the most part still manufactured in the U.S.
Finished mattresses are bulky and unwieldly resulting in significant expense to ship long distances. As a result, inordinately high transportation costs drive such manufacturing facilities to be close to regional distribution facilities, retail furniture stores, and customers, rather than where labor costs are more advantageous. Retail mattress stores often advertise that they manufacture their own mattresses at their retail store. This, of course, requires stocking multiple fabrics, materials, and components and having specialized equipment, and trained labor available at the store. Such can be difficult and expensive to maintain. Any improvements in the efficiencies and costs of manufacturing mattresses resulting in lower costs to the consumers would be welcomed by the industry.
Although the U.S. was once home to many textile mills, such are mostly non-existent today. As a result, fabrics for mattress manufacture must be imported, often from Asia. Manufacturers of the common inner spring cores are in the U.S. and are readily available in the U.S. The inventors have developed manufacturing methods and processes that allow mattress coverings to be efficiently assembled close to the textile mills and where labor costs are advantageous. The mattress containments that form the exterior of mattresses, herein termed “coverings” are shipped in bulk to markets, such as the U.S. to regional assembly facilities where the mattress coverings are paired with selected mattress cores, such as pocketed spring cores. The mattress coverings are manufactured utilizing conventional equipment and using a dummy mattress core. The mattress coverings include a zippered access on the bottom panel, for example, where the dummy core can be removed after the mattress covering is completed. When shipped to a regional assembly facility the zippered access is utilized for insertion of a select mattress core that corresponds to the size of the dummy mattress core about which the mattress covering was assembled. The zippered access is zipped shut and the mattress is ready for sale, transport, and use.
A feature and advantage of embodiments, is that a tape edge machine that typically finishes the mattress cover enclosure on a core, may also be used with a dummy core remote from the final sales region. The mattress cover or covering may be finished, the dummy core removed, and the mattress cover can be collapsed, folded, and otherwise made compact for efficient and economical shipment to a region of use and sale. Utilizing a dummy core allows form fitting during manufacture, rather than sewing together a cover based on a pattern, facilitates easy inspection of the mattress covering at the factory with all exterior sides exposed when the dummy core is therein, and allows inspection of interior structure at the factory with the dummy core removed. At a region sale and use, mattress covers are easily and economically combined with inner springs cores or other cores to form the final mattress to be sold.
A feature and advantage of embodiments is that a dummy mattress core can be configured to facilitate the manufacturing of the mattress covers. Such dummy cores can be formed of material having a low coefficient of friction with respect to the materials they are contacting. Such dummy mattress core can be formed for example of polyethylene, or other polymers are much slippery with respect to the fabrics, fibers, paddings, cushioning materials conventionally used in mattresses allowing easier positioning of the fabrics, fibers, paddings, cushioning materials fabrics a. The dummy cores can be single piece or may utilize more than one portion assembled allowing, for example size adjustment of the dummy core. The cores may be slightly oversized in thickness, for example, to simulate a core and fiber pad to be installed at the final assembly facility. Such cores can be light weight and more dimensionally stable, for example more rigid, to be easier to handle than actual mattress cores.
Embodiments comprise manufacturing large quantities of mattress covers overseas using dummy cores, shipping the quantities of mattress covers to regional sales areas, for example in the U.S., receiving and stocking quantities of the mattress covers at assembly facilities, receiving and stocking quantities of mattress cores at assembly facilities, assembling the covers onto cores at the assembly facility, sending the assembled mattresses to distribution centers to be delivered to retail stores or direct to customers.
A feature and advantage of embodiments is manufacturing large quantities of mattress covers overseas, shipping the quantities of mattress covers to regional sales areas, for example in the U.S., distributing the mattress covers to retail stores, receiving and stocking at the retail stores the mattress covers, receiving and stocking at the retail stores mattress cores, assembling the covers onto cores at the retail store. In embodiments, the stocking of mattress covers will include different sizes, different plush levels, different fabrics, and different designs; and the stocking of the mattress cores will include different sizes, different firmness levels, different core designs, and different core types. In embodiments, the completed mattress assembly will be made after a selection of options and/or purchase by a customer of the retail store. In embodiments the retail store may be a brick and mortar physical store or may be an online retailer. Particularly compared to retail stores that currently manufacture their own mattresses, this essentially eliminates the need for stockpiling an array of raw materials at the retail store, eliminates the need for expensive and specialized mattress manufacturing equipment at the retail store, greatly reduces the manufacture time, and may offer greater selection and options to the customers.
A mattress in accordance with embodiments addresses the above issues and deficiencies and includes a mattress core and a collapsible mattress cover. A collapsible mattress cover includes a top panel component having front, back, left, and right peripheral edges. The top panel component further includes an upward facing layer opposite an interior material panel, with padding, fill, and or cushioning material therebetween. A singular sidewall border component having a top edge opposite a bottom edge, and a bottom portion having a bottom material panel with four peripheral edges. The top edge of the singular sidewall border component is fastened to the four peripheral edges of the top portion. A first peripheral edge of the bottom portion is fixedly attached to a first peripheral edge of the wall portion and the first peripheral edge of the bottom portion, and a zipper defines an opening in the bottom material panel configured to receive the mattress core. A mattress might conform to generally understood sizing standards. For example, according to embodiments, a mattress might be a twin, a double, an extra-long twin, a queen, a king, or a California king size. In embodiments, a collapsible mattress cover might be a custom size conforming to a particular mattress core.
In embodiments, the mattress core fits within the bottom portion of the collapsible mattress cover. In embodiments, the interior material panel is a foam panel. The foam panel may be glued to the upward facing layer. In embodiments, a foam layer is disposed between the upward facing layer and the interior material panel. The foam layer may be glued to the interior facing layer. In embodiments, the upward facing layer is a pillowtop. In embodiments, the top portion is fastened to the singular sidewall border component with a second zipper. In embodiments, the top portion is fastened to the singular sidewall border component with stitching. In embodiments, the top portion comprises a top wall portion affixed to the pillowtop with a tape seam. In embodiments, the zipper releasably attaches the remaining three peripheral edges of the bottom portion to the remaining three peripheral edges of the singular sidewall border component. In embodiments, the remaining three peripheral edges of the bottom portion are sewn to the remaining three peripheral edges of the singular sidewall border component and the zipper is offset from the peripheral edge.
According to embodiments, a collapsible mattress cover includes a top panel component with peripheral edges having an upward facing layer glued to an interior foam panel. The peripheral edges may be secured to a top edge of a singular sidewall border component with a tape seam. The top portion and singular sidewall border component define a cavity having a similar length, width, and height of a mattress core. A bottom portion includes a bottom material panel having four peripheral edges, wherein a first peripheral edge of the bottom material panel is fixedly attached to a first bottom peripheral edge of the singular sidewall border component. A zipper defines access to an opening in the bottom material panel configured to receive the mattress core. The zipper is positioned on the bottom side and extends around the periphery of the bottom side spaced from a lateral side and the head and foot sides defining a U-shape.
The remaining three peripheral edges of the bottom portion may be sewn to the remaining three peripheral edges of the singular sidewall border component. The zipper may be stitched to the bottom material such that it is offset from the remaining three peripheral edges and runs generally parallel to the three peripheral three edges. In embodiments, at least a portion of the top portion is affixed to the singular sidewall border component with a second zipper. According to embodiments, the upward facing layer of the collapsible mattress cover may be a pillowtop having added thickness of fabric, fibers, or other cushioning material. In embodiments, a buffer panel is disposed between a bottom surface of the mattress core and the bottom material panel.
According to an embodiment, a method of assembling a collapsible mattress cover includes providing a mattress core having four sides, a top, and a bottom; providing a singular sidewall border component fastened to a bottom material panel having four peripheral edges wherein the bottom material comprises a zipper corresponding to three of the peripheral edges; pulling the singular sidewall border component around each side of the mattress core; positioning the bottom material panel adjacent the bottom of the mattress core; laying a foam panel adjacent the top side of the mattress core; and applying glue to an outward facing surface of the foam panel. In embodiments, the method of assembling a collapsible mattress cover further includes placing a cushion material panel having four peripheral edges atop the glue; and fastening the four peripheral edges of the cushion material to the singular sidewall border component with a tape seam. In embodiments, the method of assembling a collapsible mattress cover further includes placing a top portion having four peripheral edges comprising an interior material panel adjacent the foam panel such that an inward facing surface of the interior material panel is secured to the glue; securing the top portion to the singular sidewall border component with a second zipper; applying glue to an outward facing surface of the interior material panel; placing a second foam panel adjacent the interior material panel; applying glue to an outward facing surface of the second foam panel; placing a second foam panel adjacent outward facing surface of the intermediate panel; applying glue to an outward facing surface of the second foam panel; placing a pillowtop panel adjacent the outward facing surface of the second foam panel; and affixing the pillowtop panel to the top portion with a tape seam.
A feature and advantage of embodiments is that a dummy mattress core can be configured to facilitate the manufacturing of the mattress covers. Such dummy cores can be formed of material having a low coefficient of friction with respect to the materials they are contacting. Such dummy mattress core can be formed for example of polyethylene. The cores may be slightly oversized in thickness, for example, to simulate a core and fiber pad to be installed at the final assembly facility. Such cores can be light weight and more dimensionally stable, for example more rigid, to be easier to handle than actual mattress cores.
A feature and advantage of embodiments is that a collapsible mattress cover may fabricated and shipped independently of a mattress core, thereby saving on costs while improving upon quality. A feature and advantage of embodiments is that assembling an independent collapsible mattress cover allows a manufacturer to choose from a wider variety of material components thereby offering broader choices and configurations to users. A feature and advantage of embodiments is that a collapsible mattress cover offers significant improvements in service and repair of a mattress such as servicing the core or cleaning and repairing fabric and other material components.
In embodiments, the cover is manufactured with a quilt top utilizing a dummy core, at least 1000 miles from a final mattress assembly location. The final mattress assembly location within 300 miles of a spring core assembly facility.
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The upper peripheral mattress corner 43 and lower peripheral mattress corner 44 are formed by a conventional tape edge 84 that captures the quilted top panel component 24 at a top edge portion and the sidewall border component 26 forming the upper mattress corner 43 and captures the thin exterior fabric panel 29 and the quilted sidewall border component 26 at the lower corner 44. The tape edge 84 may be applied with a conventional tape edge equipment. For the lower corner with less layers to secure, a conventional sewing machine 88 as illustrated in prior art
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A quilted top panel component 24, which may have an ordered arrangement of fasteners 101 extending therethrough, is placed on the core and utilizing a tape edge machine 90 is attached to the quilted sidewall border component 26. The assembly is flipped over as indicated by the arrow 107, such that the bottom exterior thin fabric panel with the zipper is facing upwardly. The zipper 30 is opened, the flap 110 is pulled out of the way, and the dummy core 100 is removed. The mattress cover 21 may be zipped up and folded into a shipping configuration 114, with the sidewall border component 26 folded inwardly to be horizontal and in an overlaying and underlaying relationship with the top panel component 24 and the bottom panel 28. In embodiments, the mattress cover may remain unzipped.
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The following United States patents are hereby incorporated by reference herein for all purposes: U.S. Pat. Nos. 6,954,957; 7,089,618; 9,706,851; and 7,426,767. Published U.S. Patent Application US2013/0174350; US2007/0204566; US2008/0245690; US2014/0298589; US2015/0313373; US2016/0262549; and Us2002/0148047 are hereby incorporated by reference herein for all purposes. The above references to U.S. patents in all sections of this application are herein incorporated by references in their entirety for all purposes. Components illustrated in such patents may be utilized with embodiments herein. Incorporation by reference is discussed, for example, in MPEP section 2163.07(B).
The above references in all sections of this application are herein incorporated by references in their entirety for all purposes. All of the features disclosed in this specification (including the references incorporated by reference, including any accompanying claims, abstract and drawings), and/or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations where at least some of such features and/or steps are mutually exclusive.
Each feature disclosed in this specification (including references incorporated by reference, any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features.
The invention is not restricted to the details of the foregoing embodiment(s). The invention extends to any novel one, or any novel combination, of the features disclosed in this specification (including any incorporated by reference references, any accompanying claims, abstract and drawings), or to any novel one, or any novel combination, of the steps of any method or process so disclosed. The above references in all sections of this application are herein incorporated by references in their entirety for all purposes.
Although specific examples have been illustrated and described herein, it will be appreciated by those of ordinary skill in the art that any arrangement calculated to achieve the same purpose could be substituted for the specific examples shown. This application is intended to cover adaptations or variations of the present subject matter. Therefore, it is intended that the invention be defined by the attached claims and their legal equivalents, as well as the following illustrative aspects. The above described aspects embodiments of the invention are merely descriptive of its principles and are not to be considered limiting. Further modifications of the invention herein disclosed will occur to those skilled in the respective arts and all such modifications are deemed to be within the scope of the invention.
This application claims priority to U.S. Provisional Application No. 62/978,288 filed Feb 18, 2020.
Number | Date | Country | |
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62978288 | Feb 2020 | US |