Patent Application
20110179551
This invention relates to the field of coated or “rubberized” gloves.
Protective gloves are commonly used by workers in many industries to prevent or minimize hand injuries. One popular type of protective glove is a knit glove made from yarns of cotton, aramids, Vectran steel wire, fiberglass, HDPE, polycotton, etc. Such knit gloves are often combined with a rubbery coating layer in and around the palm area, to provide grip and also for wear resistance. Another popular style of a glove is those that are cut and sewn together. These may also contain materials such cotton, aramids, Vectran, steel wire, fiberglass, HDPE, polycotton, etc. These might have a rubbery coating on the palm or a full dip coating. Usually, this coating consists of nitrile rubber, polyurethane, PVC, natural rubber or other coatings. The application of coating is usually done through a well-known dipping process. These gloves provide durability, cut protection and abrasion protection, as well as chemical, water or moisture resistance, while also maintaining the benefit of form-fitting and comfort of a knit construction. Typically, the coating used on the glove will cover an area of 30% to 100% of the total glove area.
A protective glove with a coating on it that covers some portion of the glove, but that has holes or perforations through the coating to allow the hand to breathe through the polymer coating thus increasing user comfort is provided. This produces a glove that has significantly better breathability and keeps the hand at a lower temperature and causes less perspiration than existing gloves, but still can provide the necessary cut, abrasion and/or, depending on the size of the perforations, puncture resistance.
Protective glove 1 comprises shell 10, which can be entirely knitted using an automatic knitting machine. Alternatively, shell 10 can be made by cutting a knitted fabric, a woven fabric, or a combination of knitted and woven fabrics into appropriate sections that are sewn or otherwise affixed together, generally along edges of the cut fabric sections. The yarns or fibers used to make shell 10 can be cotton, cotton/lycra, polyamide (Nylon), polyaramid (Kevlar®), ultra-high molecular weight polyethylene (UHMWPE, Spectra®, Dyneema®), glass, or other high performance fibers. Optionally, combinations of these fibers and sometimes steel fibers fiberglass can be used.
Shell 10 is sent through a dip-coating station to form polymer coating 11 on at least the palm portion of the glove. The glove is first placed over a three dimensional hand mold and is then dipped into a coating bath containing the uncured rubbery polymer. Afterwards, it is sent through an oven drying station for drying and final curing.
The preferred embodiment glove shown in
The rubbery coating layer 11 comprises a nitrile rubber, polyurethane, PVC or natural rubber coating, or other comparable coating. It provides grip, keeps out dirt, provides puncture protection and provides added wear resistance.
The palm area of the almost completed glove is then perforated with holes 12, which can be of various sizes and locations. The perforations can be made using a variety of methods including, laser, mechanical die cutting, water jet cutting. The perforations or holes should be in the 0.001 mm to 20 mm size range. This does not eliminate the possibility that the sizes of the holes can be smaller or larger. Use can achieve a hole in different configurations. (i.e., round, square or any angle.)
Laser cutting may be used for cutting fabrics into panels or sections that are sewn or otherwise affixed together to make shell 10, and/or to create perforations 12. Laser cutting heats and singes the cut ends of the knit and/or woven fabric(s) that are cut into sections and sewn or otherwise affixed together along the edges of the sections to make shell 10 so there is less chance of unraveling of the glove structure. Laser cutting also eliminates the need to clean away debris. In laser cutting, the glove is placed on a fixture or glove former, and then the laser cuts a series of holes 12 in the gloves to provide the required ventilation. A laser perforator is disclosed in U.S. Pat. No. 5,550,346 to Andriash et al., issued Aug. 27, 1996.
Another method for creating the perforations is by a water jet system using a high pressure water to make perforations.
A third method for creating the perforations employs a die cutting operation.
The perforations 12 may extend only through the polymeric coating layer. This leaves the underlying knitted layer intact to provide protection for the user's palm, but still provide breathability through the knit structure. However, the perforations or holes 12 can extend through the knit structure 10, as well as the polymeric coating 11, as indicated by reference to
The holes or perforations in the palm of a given glove may all be of the same size, or they may be of varying sizes as shown in
This application claims benefit under 35 USC §119(e) of provisional application Ser. No. 61/299,003, filed Jan. 28, 2010, entitled BREATHABLE COATED AND PERFORATED GLOVES, the entire contents of which are incorporated herein by reference.
| Number | Date | Country | |
|---|---|---|---|
| 61299003 | Jan 2010 | US |
