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Method for producing thin film gloves using the cutting and sealing process and glove produced therefrom

a technology of cutting sealing and thin film gloves, which is applied in the direction of gloves, adhesives, gloves, etc., can solve the problems of rare to find a commercially viable glove, no way, etc., and achieve the effects of reducing the thickness of the back, increasing the thickness of the palm, and increasing the complexity of the structur

Inactive Publication Date: 2015-02-19
FOODHANDLER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The solution results in gloves with improved durability, elasticity, and form-fitting capabilities, comparable to those produced by the dipping method, while also offering better thickness control and reduced material usage, making them more environmentally friendly and cost-effective.

Problems solved by technology

While in theory a dipping process could also yield multiple layered structures via multiple dipping steps, in reality in the marketplace, it is rare to find a commercially viable glove that is made of two layers of different materials, or use different formulations.
Since the dipped article forms one piece, there is no way to have such a case that the palm and the back are made from different formulations or materials.

Method used

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  • Method for producing thin film gloves using the cutting and sealing process and glove produced therefrom
  • Method for producing thin film gloves using the cutting and sealing process and glove produced therefrom

Examples

Experimental program
Comparison scheme
Effect test

example 1

Polyvinyl Chloride and Phthalates Plasticizer

[0025]Traditionally, utilizing a polyvinyl chloride liquid compound that is suitable for producing a glove employing the dipping process, viscosity and boiling point requirements prohibited the choices of plasticizers tremendously. Among the many families of plasticizers, dialkyl phthalates are most widely adopted. This is a very highly controversial situation since there are concerns about their effect on health and food contact, most noticeably utilizing diethylhexyl phthalate (DEHP). However, using an extruder to produce films employed in the cutting and sealing process, the requirement for plasticizers is much more flexible. Not only can one choose a non-conventional plasticizer such as citrates, adipates and polyesters, even for the same plasticizers, the use of extrusion to produce the film layers could adopt a much wider plasticizer range because of no limit on the viscosity. As a result of that, a polyvinyl chloride glove produced...

example 2

Polyvinyl Chloride without Phthalates Plasticizers

[0029]As previously described in Example 1, DEHP has been used as a plasticizer with polyvinyl chloride. However, since there are concerns about the use of DEHP as a plasticizer, Example 2 employs a polyvinyl chloride liquid compound without phthalate plasticizers. Even though PVC glove manufacturers using the dipping method have steadily migrated from the use of DEHP, the plasticizer choices are still confined to the phthalates family mostly using diisononyl phthalate (DINP) as the alternative to DEHP.

[0030]Using a film forming extrusion process such as, but not limited to blowing, casting or calendaring, the requirement for plasticizers is more flexible. Various non-conventional plasticizers such as, but not limited to adipates, citrates, azelates, phosphates, trimellitates, chlorinated paraffin as well as their combinations via mixing can be used. Even for the same plasticizers, extrusion could adopt a much wider plasticizer range...

example 3

Ethylene Propylene Copolymer (EPC)

[0032]Generally, as previously described, gloves used in the food service industry are predominantly constructed from polyethylene. These films are formed using either a blowing or casting process prior to employing the cutting and sealing process. Typically, the thickness of these gloves is purposely controlled to be less than 0.02 mm. If the glove is thicker than 0.02 mm, plastic polyethylene can be quite tough. Not only is it impossible to form the application as desired, but it could also quickly cause hand fatigue. As a result of thin thickness, the polyethylene gloves produced by the cutting and sealing process were not durable. As a matter of fact, most of these gloves were disposed in several minutes.

[0033]The present invention utilizing a glove produced by an ethylene propylene copolymer film is almost as flexible as the glove produced by rubbery materials. Additionally, at a thickness of between 0.030 and 0.060 mm, it is soft and comfortab...

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Abstract

A single use disposable glove having two or more layers with a thickness which can range from 0.02 mm to 0.04 mmm for food handling with satisfactory formfitting and durability, all the way up to about 0.10 mm and above for heavy duty applications while still maintaining comfort like that of natural and synthetic rubbers. Materials such as styrene-ethylene-butadiene-styrene (SEBS) or styrene-isoprene-styrene (SIS) may be used to produce single use disposable gloves employing the cutting and sealing method. The use of these compositions could have a thickness between about 0.02 mm and about 0.1 mm or above. More importantly, the use of these compositions in the cutting and sealing process would yield a glove having better elasticity. The film quality using the various extrusion techniques would outperform a glove produced by the dipping process, not only in integrity (pinhole rate) but also in a thickness profile (uniformity).

Description

RELATED APPLICATION DATA[0001]This application is a continuation of U.S. Continuation-in-Part patent application Ser. No. 14 / 039,702, filed Sep. 27, 2013, and claims priority to and the benefit of U.S. Non-Provisional patent application Ser. No. 12 / 923,198, filed Sep. 8, 2010, which are incorporated herein by reference in its entirety.FIELD OF THE INVENTION[0002]The present invention is directed to a method of producing a single use disposable glove using the cutting and sealing process.BACKGROUND OF THE INVENTION[0003]The most widely used element to protect an individual's hand during work or other endeavors would be a glove. Historically, gloves were produced utilizing a large number of different processes as well as various sorts of materials depending on the variety of applications.[0004]For example, gloves used in gardening and in sports which would require the use of a heavy duty material would be made by sewing pieces of these materials together. These materials would include...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A41D19/02A41D19/00
CPCA41D19/0006A41D19/02A41D19/0068Y10T156/1054A41D19/0055
Inventor TAO, JIAN
Owner FOODHANDLER
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