WO1993024068A1

WO1993024068A1 - Nonsticking protective glove

Info

Publication number: WO1993024068A1
Application number: PCT/SE1993/000461
Authority: WO
Inventors: Sten Gunnar BJÖRNBERG
Original assignee: Bjoernberg Sten Gunnar
Priority date: 1992-05-29
Filing date: 1993-05-26
Publication date: 1993-12-09
Also published as: SE9201682L; SE470048B; SE9201682D0

Abstract

Protective glove made of plastic films sealed together to the form of a glove leaving an opening for insertion of a hand. The glove has as a whole or partly a nonsticking surface that does not stick to glutinous items.

Description

NONSTICKING PROTECTIVE GLOVE

US patent, 4,304,008, describes a powder free elastic operation glove.

The description presents a glove made from Chlorine- haloegenated latex with a thickness of 0.08-0.25 mm and it

5. is also provided with a silicone cover on the inside with the thickness of 0.05-0.005 mm. The purpose with this invention is to present a powder free operation glove with enough strength and elasticity despite the deterioration of latex rubber in the chlorine halongenisation.

10. US patent, 4,658,444, describes an operation glove made from of latex rubber with a smooth surface over the finger and palm areas that will not stick to surgical tapes. The glove is also provided with a loose coat that, when needed, can be folded down covering the palm of the hand to get

15. a bettar grip.

These two types of gloves are manufacturedby bye so called dipping technique , have a thickness between 0.008-0.25 ram and are made for use in surgical operations. These gloves are expensive because of the time consuming

20. manufacturing process and the large quantity of material required.

Another very common type of protection glove is made from two plastic films that have been sealed together along the outer contour to the form of a hand in order to create a

25. glove.

A glove like that is described in the US patent 4.084.265 and in the Swedish patent 204 427.

This type of glove is very cheap to produce and is the most commonest type of protection glove.

30. However, many problems can arise with this type of glove when because it easily sticks to items that are fully or partly covered with gluttonous surfaces or areas. For example, handling diapers with tape fastening, changing of adhesive band aids, applying self-adhesive labels and

35. handling masking tape in painting work. Furthermore, the glove often breaks when one tries to pull it away from the surface where it is stuck, can leave In many cases the entire item one is handling becomes useless.

5. Moreover, the user may also risk skin contamination from bacteria or paint when the glove breaks, depending on what the glove was used for. Many gloves and items that have been used may be prematurely discarded resulting in increased costs. Many times the user chooses not to wear

10. any gloves because of the mentioned problems which may result in infection and contamination.

The following invention describes a protection glove made out of plastic film sealed together to create a glove whose outer surface is fully or partly covered with a material

15. that does not stick to tape or other adhesive materials.

The invention is described in the following pictures Figure 1 and section figure 5 shows of two plastic films (1) and (2) that have been sealed together along the har-Ps outer contour (3) with an opening for the hand (5) where

20. the outside of the two plastic films (1) and(2) have been provided with a non-adhesive coating (4). Figure 2 and section figure 5 shows a protection glove where only one side of the glove has been provided with the non-adhesive layer.

25. Figure 3 shows a protection glove where only the finger areas (4) of the glove have been provided with the non- adhesive layer.

Figure 4 shows a protection glove where only the fingertip areas of the glove have been provided with a non-adhesive

30. layer.

The pictures are illustrative and other applications may exist.

In addition to the non-sticking layer covering the entire glove there can also be variations of the covering. Some

35. examples are pattern of different kinds or coating on chosen spots such as the thumb and index finger. "^e plastic films on the gloves different sides can also be colored differently or one side can be left uncolored. The non-adhesive layer can be colored either the same as or dif erently from the plastic film, so the non adhesive

5. cover easily can ϊ^~"^~ identified.

Ingredients to inc_* -aεe friction can also be mixed in to the non-adhesive layer for example, pulverized Silka,(Alcro art. no.2349 ),aluminum oxide or other particles.. The amount of mix depends on the level of friction required

10. it can vary between 0.1% up to 50% but preferably between 0.5-15%.

One or both sides of the glove can partly or fully b e embossed as in the US patent no. 4.084.265 to improve gripping capability. The plastic films can be made out of

15. Polyethylene (PE) (for example Ne«te DFDS 6601) or by coopolymers of Polyrthyl (for E Ethylene Vinylacetat (for example Neste „3D 1~ 3),(EBA) Eten Butylakrylat, (EEA) Eten Etyl Akrylat, (IMA) Ethylene Metylakrylat, Ethylene Metylacetat (EMAC), Tetra Fluoreten etc.

20. The plastic films can also be made out of (PP) Polypropylene or soft PVC (Polyvinylcloride) , (PUR) Polyurethane, Tetra Flourethylene or other suitable polymers.

The plastic film could also be made from two or more la/as of the same or different polymers as mentioned above that

25. have been laminated together in the processing of the film (the method is described in the US pat. 4.151.318) with or without different layers or through lamination where the films have been fused together with glue. The total thickness of the plastic films can vary between

30. 0.005 mm to 0.25 mm but preferably between 0.010-0.060 mm. The different thickness of the layer, i a multilayer film can vary between 0.001 mm to 0.249 m--u to make a total thickness of the film between 0.005-0.25 mm, preferably between 0.010-0.060 mm.

35. The non sticking layer can be made of ilicone , ea. Wacker -.emie Dehesive 520 ,310E or 810, or TH Goldschidt AG TEGO itC Silicone Acrylates or other types of Silicones mixes. Other brands can also be used ,the surface weight should be 0.05 - 15 gr/m^J preferably 0.1- 2 gr /m\ The nonsticking layers can also be made of Tetraflour ethylene (Teflon) mixes or coopolymers thereof with a

5. surface weight between 0.05 - 0.15 gr /m² ,preferably 0.1 - 2.0 gr/m²'

The whole glove or one part of the glove can also be made non sticking with a slipping agent (ea. Eureca acid amid or Ole acid amid) commonly used in the qualities mentioned

10. above when mixed in very high content .

The amount of sliping agent can be between 0.1 - 5 % preferably 2 % in order to achieve a non sticking effect in a film of 0.025 mm thickness. The mixing of slip agents can also be made i one or more of

15. the layers when the film is of a multilayer type or in the any of the other non sticking materials mentioned. The whole glove or part of the glove can also be made non sticking by means of mixing different oils preferably vegetarian ones (ea. Corn oil Olive oil ) in the polymer

20. when manufacturing the plastic film.

This teσhnic is well known by the art when manufacturing so called household wrap (Glad Pack) , some standard qualities resins of this type are also on the market e.a Neste DFDS 6190.

25. Description of manufacturing method.

Coating of the non sticking layer can be made with an equipment schematic described in figure 7.

A plastic film (6) from a roll passes the coating station

(7) and a drying section (8) were the coating layer is 30. cured either by heat , cooling ,ultra violet rays or electronic beams.

The finished film with the non sticking layer is then ready to be wound up to a roll (9).

The method is well known for a person experienced in the 35. art,and several commercial equipments are available.

Ea. Pagendarm Silicone Coater P 92260.0 or Machinenfabrik

Max Kroenhert GmbH , model RECO 900 or other types of coating equipments. The manufacturing method is schematically described in picture 8.

Two plastic film rolls (10) and (11) with the non sticking layer facing outwards are passing the nip rolls (12) and 5. (13) and passes two driven rollers (14) and (15).

Roller (15) has one or more dies (16) which are heated to a temperature above the melting temperature of the plastic film.

When the heated die (16) are getting in contact with the 10. plastic films (10) and(ll) and pressed against the support roller (14) the plastic films will be sealed against the contour of the die and at the same time it will be cut out to a glove.

The method is well known for a person skilled in the art. 15. The finished glove (17) can easily be separated from the rest of the film (18).

Manufacturing of plastic gloves from plastic film is well known to persons skilled in the art and commercial equipments are available ea. Joisten & Kettenbaum FSA 781.

Claims

1.Protective glove made of plastic films sealed together to the form of a glove leaving an opening for insertion of a hand c h a r a c t e r i z e d in that the plastic film have a thickness of between 0.005 and 0.25 mm and that 5. the outside of the glove has partly or as a whole a layer of a non sticking material, mainly consisting of Silicone or Teflon.

2.Protective glove according to claim 1 c h a r a c t e¬ r i z e d in that only one side of the glove have the 10. non sticking layer.

3.Protective glove according to claim 1 and 2 c h a r a c- t e r i z e d in that only part of the fingers , the whole fingers or an area covering the fingers and part of the palm have a non sticking layer.

15.

4.Protective glove according to any of the claims 1 -4 c h a r a c t e r i z e d in that non sticking layer is partly or as a whole made as a pattern.

5. rotective glove according to claim 1 and 2 c h a r a c- t e r i z e d in that the non sticking layer only is 20. situated on the thumb and index finger.

6.Protective glove according to any of the claims 1 - 5 c h a r a c t e r i z e d in that a friction increasing agent is mixed in the non sticking layer.