DE29619194U1 - Foil for the production of disposable protective clothing - Google Patents

Description

Films for the production of disposable protective clothing

This innovation concerns films used for the production of disposable protective clothing.

Disposable protective clothing made of PE is used in many areas (cosmetics, care, laboratory, etc.) and is mainly used to protect the body or clothing (gloves, aprons, capes, overshoes, etc.) or to enhance the effect of cosmetic or medical applications (in particular square or shaped hoods).

These items are currently mainly made from double-layer LDPE/LLDPE film or copolymer film with a thickness of 20 - 40 μm. Disadvantages of these films include:

• LDPE and copolymer film tend to stick together, and the products are often difficult to open and put on.

• Depending on the humidity and outside temperature, LDPE gloves in particular give the feeling of dampness on the hand and heavy sweating immediately after putting them on; in summer, putting them on is often only possible after several attempts. Multiple use is therefore usually not possible.

• The limited stretchability of LDPE film means that gloves tear and lose their protective function.

• Depending on the thickness of the film and the type of material used, the tactile sensation is limited.

The aim of the innovation was to produce a film that allows for reduced wall thicknesses while maintaining very good stretching properties and also avoids or reduces the other known disadvantages.

The invention is explained below using the example of a film of 14 μηι thickness:

The starting components 46 % HDPE with a melt index MFI ISO 1133 (5 kg) of 0.22 g/10 min, density 0.946 g/cm ³ and 54 % LLDPE with a melt index MFI, ISO 1133 (2.16 kg) of 0.9 g/10 min and a density of 0.918 g/cm ³ , were dosed and processed on a film blowing machine with a nozzle diameter of 150 mm in the HDPE blowing process to a film 1,280 mm wide.

Telephone (0 40) 72 73 70-0 Accounts: Sparkasse Stormarn Deutsche BanKReinbe:< Kommanditgesellschaft Rudolf Stephan GmbH

Fax (040) 72 73 70-29 (bank code 230 51610) 20-075 009 (bank code 200 700 00) 9710 13800 Head office Reinbek Head office Heinbek

Postbank Hamburg Commerzbank Reinbek District Court Reinbek HRA 1171 District Court Reinbek HRB 1494

REIN-PLASTIK KG, R. STEPHAN & CO {Gmbrf& e&V* * &iacgr;&Ggr;

founded in 1966

Rein-Plastik KG · Borslgstraße 3 · 21465 Reinbek District of Hamburg

Films made from the proposed mixture according to the described process show with wall thicknesses between 12 μm and 25 μm a significantly increased stretchability compared to LDPE film

Gloves made from this film (medium size, 300 mm long) show the following properties both in laboratory tests and according to the assessment of test subjects (subjective impression):

&bull; Gloves can be opened immediately and without problems

&bull; There is no or only a very slight feeling of moisture on the hand, so it is easy to put on and take off

&bull; The high LLDPE content ensures excellent seam strength, even under strong stress due to stretching

&bull; The stretchability is more than 30% higher than that of LDPE and is comparable to copolymer film

&bull; Due to the low wall thickness, test subjects report very good tactile sensitivity and significantly less impairment than with LDPE gloves

As a result of the investigations, the use of a film is proposed for the production of disposable protective clothing made of PE,

which consists of 40 - 50 % HDPE

and consists of 50 - 60% LLDPE or an ethylene copolymer.

Telephone (0 40) 72 73 70-0 Accounts: Sparkasse Stormam Deutsche Bank Reinbek Kommanditgesellschaft Rudolf Stephan GmbH

Fax (0 40} 72 73 70-29 (bank code 230 516 10) 20-075 009 (bank code 200 700 00) 9710 13800 Head office Reinbek Head office Reinbek

Postbank Hamburg Commerzbank Heinbak District Court Reinbek HRA 1171 District Court Fteinbek HRB 1494

Claims (2)

REIN-PLASTIK KG, R. STEPHAN & CO Rein-Plastik KG · Borsigstraße 3 · 21465 Reinbek District of Hamburg Protection claims 1. Films for the manufacture of disposable protective clothing such as disposable gloves, head caps, capes, overshoes, etc., which consist of 40 - 50 % HDPE with a density of 0.935 0.96
g/cm ³ and a melt flow index MFI (5 kg), ISO 1133, of 0.15 - 0.30 g/10 min and 60 ■ 50 % LLDPE or an ethylene copolymer with a density of 0.89 - 0.92 g/cm ³ and a melt flow index MFI, ISO 1133 (2.16 kg), of 0.3 - 1.0 g/10 min. 2. Films according to claim 1 in a thickness of 10 - 25 μm. Telephone (0 40) 72 73 70-0
Fax (040) 72 73 70-29 ILN 40 22121 00000 0
VAT ID No.: DE 135 509 043 Accounts: Sparkasse Stormarn (Bank code 23051610) 20-075 Postbank Hamburg (Bank code 200 100 20) 91079-204 Deutsche Bank Frankfurt
(Bank code 200 700 00) 9710 13800 Commerzbank Reinbek
(Bank code 200 400 00) 26 55710 00 Limited partnership based in Reinbek District Court of Reinbek HRA 1171 personally liable partner Rudolf Stephan GmbH Rudolf Stephan GmbH Headquarters Reinbek District Court Reinbek HRB 1494 Managing Director Rudolf Stephan