JPS59214449A - Foreskin care material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention is used in surgery and general medicine.

Relating to dressing materials such as bandages.

In the field of dressings, trauma treatment, surgical incision cloth and resembling sheet materials, wound dressing materials and bandages need to have properties that are very similar to skin in order to promote healing. This is well recognized. To achieve this ultimate goal, a number of solutions have been proposed, including changing the physical and chemical properties of the dressing material.

In general, the basic composition of covering allowance materials is essentially the same. That is, the basic composition includes a reinforced, non-dimensionally reinforced polymeric material, an attached pressure sensitive adhesive, an absorbent material such as a release sheet and a cotton pad, etc. In this case, the release sheet is removed and the polymer sheet material acts as an envelope/rear to bring the adhesive into contact with the patient's skin.

Research in this field has improved polymeric materials and adhesives in order to bring dressing materials closer to the customization of human skin. For example, the encapsulant material, i.e. the polymer note material, in combination with the adhesive, is 40″11
111:, 300g/g/24 at 80 relative humidity
Be sure to have a water vapor permeability greater than time. This water vapor permeability has been imparted to dressing materials by several means up until now. C(λ) is one in which both the adhesive and the polymeric sheet material are rendered microporous; the second means consists of a continuous polymeric sheet material and adhesive that is water vapor permeable. , in this way water vapor permeability is attributed to the molecular structure of its components.

The purpose of this measure is to provide a dressing material that is sufficiently permeable to water vapor to prevent maceration of the skin and promote healing. What are the properties of covering allowance materials that oppose their transparency?

The ability of these medical supplies to prevent Cuchilia from infecting them - thereby preventing infection.

Great progress has been made in providing dressing materials with desirable chemical properties.

- There are also some problems that arise when applying these dressings to all patients.

Problems encountered in this application have precluded the use of certain materials with advantageous properties as dressing materials. This is because it is too late to apply the covering materials based on these materials.

In many cases, water vapor permeability is a function of the thickness of a film of a polymeric material; the thinner the material, the greater the water vapor permeability. Typically, the polymeric material is between 1 and 5 mils.

For commercially available products, the stiffness was larger than 1 mil (0.0254 mm). The required thickness of this polymeric material is determined by several factors (force, σ). One of these factors is the modulus of the polymeric material σ.

That is, the polymeric material needs to have sufficient strength so that it does not sag or stretch during the forces applied to the patient. This is particularly problematic when the dressing material takes the form of a surgical dressing.

This dressing is necessarily large and requires more than one person to apply it to the patient. Due to this required thickness and greater stiffness.

Such dressing materials do not conform to the contours of the body as well as thinner materials, so that after the dressing has been applied, the edges of the dressing may roll up and away from the body. It has a tendency to peel off. When we transfer this fundamental nature and problem to the field of trauma treatment, we cannot avoid treating trauma with all the treatment materials (VC, J). It comes to a conclusion.

Occurs when applying covering materials, especially large materials1-
Another problem is that after removing the peeling/-t, the adhesive of the dressing material wraps around the area between the f′L branch point σ) and the adhesive of the dressing material is One problem is that there is a possibility that the adhesive itself may become stuck. To prevent this winding, return the material to its original flat shape and pull it in a predetermined position. In some cases, this problem not only necessitates discarding the material, but also requires more than one person to apply the material to a given location on all patients. .

In accordance with the present invention, both high modulus polymeric notebook materials and low modulus polymeric sheet materials can be formed for both small and large items such as surgical dressings, as well as for trauma treatment and intravenous applications. A wrapping material is provided that can be easily and properly applied even to small objects such as those for redundant tubes. In accordance with the present invention, there is also provided a method for manufacturing a dressing material which involves a minimum number of steps and in which the final dressing material has superior properties compared to conventional dressing materials due to its composition. Ru.

A covering dressing material 1d of the present invention and a carrier sheet.

Assembling force with the carrier sheet 1. and a sheet of polymeric material adhered thereto. a highly tacky pressure-sensitive adhesive is applied to the surface of the polymeric material opposite the carrier sheet;
Furthermore, the exfoliation nl:note is combined with the above-mentioned 7ag rlE sexual contact agent.

A method of manufacturing the dressing material is also not provided. The method includes casting an aqueous dispersion of the polymer, 'e, onto a carrier note. The dispersion? r Kenji 1F2. 1. Forming a film of a polymeric material. 7. Place it on the release sheet.
- applied sensitization to the surface on which the polymeric material rests;

The present invention will be more fully explained with reference to the drawings.11.
Wow.

Covering dressing material 10 I′i of the present invention, carrier sheet 1
2 and the carrier sheet is combined in a pair.
, I was wondering about the entire film 14 of the polymeric material that was placed on it. 1. A pressure sensitive adhesive 16 is attached to the surface of the polymeric material 140 on one side and on the other side to the peelable sheet.

In this case, the release sheet 18 is cut along the straight line 20 and there are at least two sheets rl:
IJ Ir: (4] - F and (7) should be given.

A useful career sheet to carry out.

The film is made from a polymeric material having a thickness of about 1 to 5 mils.

Preferred carrier sheets have sufficient strength or modulus so that they do not sag or curl over the body during manufacture of the dressing material or during application of the dressing material. Crafted from highly flexible polymeric material. The carrier sheet should have a high degree of coverage and flexibility, and a tear strength greater than that of the film and 35j 5#/cffl (500 ps i
) should also have a modulus greater than or equal to Keeping this in mind, the carrier sheet:
Amorphous polymers such as polyethylene or polypropylene are preferred over oriented high modulus polymers such as polyethylene terephthalate.

The stretched polymers described above are more difficult to deform than amorphous polymers, and therefore carrier sheets made of high modulus stretched polymers are more difficult to conform to large areas of the patient's body.

In another aspect of the invention, during the manufacture of the dressing material,
The carrier sheet must have a thermal distortion of greater than about 85° C., as discussed below. Additionally, the carrier sheet may be VC transparent or translucent so that the person applying the dressing to the patient can easily view the patient through it and place the dressing in the appropriate position on the patient. It is more preferable that

Films of polymer materials are preferably -<1-1o, 25
For a film with a thickness of ~5 mil (1,0064 to 0.127 m), the average resistance for a given film abrasion is approximately 1.500 to approximately 8.000 psi (10
5-5621cg/ai) tensile strength of 500-30
00 psi (35-21110 g/m). It should be noted that low modulus, low tensile strength materials can be used as the film-forming material of the dressing material of the present invention due to the unique configuration of the present invention. Polymeric materials useful in the practice of this invention include polyacrylates, polyamides, polyolefins, silicones,
Polyhinyl halide etc. may be used. however.

Preferably, a raw polyurethane polymer is used as the synthetic polymer material. This is because this polymer has a wide range of tensile and elongation specifications required for the final product. It should also be noted that a wide variety of polymeric materials can be used to form films of polymeric materials, as a wide range of physical properties may be tolerated in a configuration of the present invention. % fl to the present invention,
Approximately 5 DO to 6.000 psi in film thickness
Low modulus polymers having a modulus of V (35-211 kfl/C'd) are particularly preferably used in the practice of this invention.

This is because such low modulus polymer materials easily conform to the shape of the body in film form.

Polyurethanes useful in the practice of this invention may be polyurethanes based on organic soluble N[=C soluble 9
Either dispersed or emulsified polyurethane may be used.

Polyurethane is a high-performance thermoplastic polyurethane that is soluble in 9 strong solvents such as dimethylformamide.
as well as lower physical percent polyurethane/--typically provided from an aqueous medium. Washable polyurethane.

It is preferred for use in the practice of this invention because it is easier to process and is more medically advantageous since there is no need for solvent removal.

Polyurethanes useful in the practice of this invention are polyurethanes dissolved, dispersed or emulsified in a water bath solution. More particularly, the polyurethane/holimer is suitable for the production of polyurethane/polyurethane/
It envelops the reaction product with a compound containing a large number of active hydrogen atoms.

Such diincyanates and active hydrogen compounds are
U.S. Patent No. 7153.412,054 and U.S. Patent No. 4,0
No. 46,729 (described in more detail in Section 1-1). Furthermore, the method for producing such polyurethane is also well recognized as exemplified in the aforementioned patent. In this invention, the method for forming the polymer is In addition, aromatic, aliphatic and cyclic isocyanates or these diisocyanates can be used. -6 diisocyanate, meta-phenylene/
Diisocyanate, biphenylene 4-4' diisocyanate, methylene-bis(4-phenylisocquauntone, 4-chloro-1,6-phenylene/diisocyanate, naphthylene-1°5-diisocyanate, tetramethylene-1,4-diisocyanate, hexamethylene diisocyanate 1.6
isocyanate, decamethylene-1,10-diisocyanate, cyclohexyl/-1,4-diisocyanate, methylene/-bis(4-cyclohexyl isocyanate, tetrahedral naphthylene/diincyanate, isophoro/diisocyanate, etc.).

Such incyanates are reacted with compounds containing multiple active hydrogens, such as diols, diaminos, and triols σ). In the case of diols or triols, they are typically polyalkylene ether or polyester polyols. Polyalkylene ether polyols are the preferred active hydrogen-containing polymeric materials for polyurethane formation.

BoV ether polyols, polyester polyols and other types of polyglycols can also be used to form polyurethanes to obtain the desired final customization such as sheet materials.

Films of polymeric materials are preferably formed from aqueous systems7.
Therefore, polyurethanes may be emulsified with recognized emulsifiers or carboxyl groups by those skilled in the art. It may also be introduced into the polymer backbone through a covalent bond. Neutralization of the carboxyl groups of the polymer backbone with amines, especially water-soluble monoamines, provides water dilutability. A method of providing a water-splicable polyurethane with sufficient molecular weight to impart the requisite physical properties to a sheet material is described in detail in US Pat. No. 41,171,391.

In terms of standards, when the film of the polymeric material of the present invention is made from water-based polyurethane, it has a molecular weight of about 500 to
Approximately 3.000psi (35~211 kg/crtl
), the modulus of 05-5 mils (0,0127-012
7) film thickness and 1500~8[]00psi
It has a tensile strength of (105-562tcg7cyrt). These polyurethanes, made from roughly aqueous emulsions or dispersions, conform very well to the human body.

Fills gaps and wrinkles in the skin. Much better than Kodomari J7. ・Compared to 2 Cucilia. <Rear effect.

Pressure sensitive adhesives useful in the practice of this invention may be solvent-based or water-based. The pressure sensitive adhesive has high adhesion to human skin I# with a dry tack of 2, i.e. 5
nz/in width ~ 30 nz/in width (55, 8~6
It has an adhesive force of 34°811/can width).

Water-based adhesives are preferred (2) because the adhesive must have low toxicity since it comes into contact with the skin and external wounds.

Furthermore, water-based adhesives are preferable because they do not cause JW boundary problems that occur during drying. Such stone contacts are typically polyacrylate adhesives well known to those skilled in the art. The adhesive may be a rubber or lilacone based adhesive. The adhesive typically has a thickness of about 0.5 to 2.
5 oz/(yd)2(16,96~84.789/r
rl) applied at the level of tl, ru.

Naturally, the contact between the carrier sheet and the film of polymeric material is limited by the adhesion between the film of polymeric material and the pressure-sensitive adhesive and the adhesion between the pressure-sensitive adhesive and the patient's skin. More than unfaithfulness.

I don't have a loaf. From this point of view, the carrier sheet must be bonded to the polymeric material so that it can be easily removed, and the carrier sheet must have a width of 5 g/in to 100 g/in.
It must have a release value of in width (1,97 g to 39.37 g/cm width). ) useful in practicing the invention! ,
Release sheet is approximately 5.9/in.
It is necessary to calculate the peel value from the pressure-sensitive P+adhesion ratio of 1.97 to 39.37 g/in width (1.97 to 39.37 g/m width).

moreover.

If the peelable sheet is provided as a single sheet mated with a pressure sensitive adhesive.

The adhesion between the 0 release sheet and the pressure sensitive adhesive is.

The absorption between the carrier sheet and the film of polymeric material must be lower than V-J'. By doing this, when the wrapping material of the present invention is used,
The I+J rNta sheet can be easily removed with less force than that required to remove the carrier sheet from the polymeric material.
It can be peeled off from the adhesive.

If the adhesion between the peelable sheet and the adhesive is greater than the adhesion between the carrier sheet and the polymeric material, then the material can be bent and the carrier on the polymeric material. The release sheet will not cool unless it has been divided by one or more cuts so that the release sheet 1 can be removed to the same size as the sheet.

During application, the wrapping material of the present invention is removed from the sterile package, the release paper is removed from the pressure-sensitive adhesive, and the adhesive is applied onto the carrier sheet and the dry tacky pressure-sensitive adhesive is exposed. leaving a polymer film with a The carrier sheet and the film of polymeric material are preferably transparent or translucent so that the dressing material can be placed precisely in the desired location on the patient Vr, the person applying it, and so on. Also, because the carrier sheet has a high modulus.

There is little or no problem with the dressing material rolling up and the dry tacky pressure sensitive adhesive adhering to itself at other locations on the polymeric material. After the dressing material is placed and the pressure sensitive adhesive is adhered to the patient, the carrier sheet is removed from the surface of the polymeric material. This allowance material is ・2
It prevents the invasion of Kuderia and does not cause skin maceration as the polymer film and pressure sensitive adhesive are water vapor permeable.

In general, the polymeric material conforms to the contours of the patient's body1';
Because of its low modulus, such as 5, the polymeric material has a high degree of flexure so that the wrapping material can be applied and remain in place for long periods of time without curling up the edges.

One inch is required to produce the dressing material of the present invention.

Combining the carrier sheet with a film of polymer material
The film of polymeric material is an extruded film of 1" or 1".In this process, this film is used as a carrier and
11 Simply put together. Covering dressing material M1 of the present invention
．． ! ! In the most preferred embodiment of construction, the aqueous polyurethane is cast onto a carrier sheet and the water is removed therefrom, such as by drying. In this case.

Gear rear 7-toe made of polyethylene/Also LD volley O fin/
It can be an amorphous dryer having a deformation of less than about 110°C, such as. The carrier sheet coated with water-based polyurethane can then be dried at elevated temperatures without adversely affecting the carrier sheet. However, when using a high performance polyurethane dissolved in a strong solvent such as dimethylformamide, the polyethylene/terephthalate can withstand the high temperatures required to dry this polyurethane polymer into a film.

A crystalline polymer such as polytetrafluoroethylene must be used.

A dry tack pressure sensitive adhesive in a solvent or aqueous medium is cast onto a release sheet and dried.

In this way, a film of polymeric material, indicated as 14 in Figure 2, is assembled on the carrier sheet 12 (Fig.
), the release sheet 18 is coated with adhesive 16 as previously described (Fig. 4). The surface bearing adhesive 16 is contacted with the surface bearing film 14 of polymeric material, and both surfaces are laminated. The resulting composition is then made into cedar suitable for use. If necessary, the slit 20 can be applied to the release paper as described above.

The invention will be better understood by reference to the following examples.

EXAMPLE An aqueous polyurethane dispersion was prepared from a polyurethane polymer based on an aromatic incyanate, a polyether polyol, and a dihydroxyalkyl carboxylic acid and solubilized with Tarn Yariami. The aqueous polyurethane dispersion was poured onto a clear polyethylene film in a JV Saramill with a 9 mil gap and heated to 210°F (99°C).
? Dry for 10 minutes.

1. A film with an iR of 1 mil was formed. This Jg 1 mil T/L film was tested at 40°C and 80% relative humidity.

It had a water vapor permeability of 780 fl/77I2/24 hours. Also, polyurethane films cast from this aqueous dispersion had a thickness of 35
[Exhibited a tensile strength of 10 psi (246 kg/C1d) and an elongation at break of 400 modulus. Immediately after peeling at 18 degrees, 11.11 degrees straight is 16-24 oz, / (:
/ f width (,PSTC-1) (179~268.!i+
/ (m width) polyacrylate pressure sensitive adhesive] +, A-
737 (Mnus antn Cnmpany'JA
) J7 size 1 mil film total 2 silicone coated on one side/all coated release paper-H, P, Sm1th Co
Commercially available as 8103 by A. This solvent-based adhesive was cast with a total gap of 9 mils and 2
After drying at 10°F (99°C) for 10 minutes, a 19 mm 1 mil pressure sensitive adhesive layer was formed. The above-mentioned polyurethane film and adhesive were laminated under full pressure, a cut was made in the center of the release sheet, and the release sheet was wound onto a roll. It was then rewound from the roll and cut into a shape suitable for use as a dressing material.

10 inches (25,4cm) xl 4 inches (35,
6cTL) was bent over the slit in the release paper to remove the release paper therefrom. The enveloping material - consisting of a carrier sheet, a polyurethane film and a pressure-sensitive adhesive - has sufficient shape retention so that it does not roll up when placed in the hands of a person. had. The dressing was then placed across the patient's chest and the carrier sheet was removed therefrom. This enveloping dressing material prevented the invasion of Cucilia and was water vapor permeable.The peeling value between the carrier sheet and the polyurethane material film was 20j/'f7chi (
7.9 g/cTL width]. Also, the adhesive strength between peel sorting and pressure sensitive adhesive is 20g/inch width (79gM width)
Adhesion strength between pressure-sensitive Vito adhesive and patient skin is 15-2002
,/Inoch width (167-226g/CrrL width) and ivy.

As is well recognized by those skilled in the art.

The carrier sheets, films of polymeric materials, dry tack pressure sensitive adhesives and release sheets of the present invention can be made from a variety of materials well recognized by those skilled in the art. For example, the polymeric material forming the entire film of polymeric material may be reinforced or not reinforced at all;
It may also contain medical additives useful for the treatment of trauma and may be further processed by any method well recognized by those skilled in the art.

The company provides dressing materials that have excellent physicochemical properties and are easy to apply to patients.

Although the invention has been described with respect to particular materials and manufactured in a particular manner, the invention is to be limited only by the scope of the claims that follow.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of two dressings of the present invention. Figure 2
FIG. 1 is a plan view of the wrapping dressing material of the present invention from the peeling and sorting side. FIG. 3 is a cross-sectional view of a carrier sheet with a film of polymeric material σ) attached thereto. FIG. 41d is a cross-sectional view of a pressure sensitive adhesive and a release sheet bonded together. Patent applicant Masahiro Matsui (and 1 other person), Patent attorney representing Norwood Industries, Inc. Procedural amendments June 2, 1939, and Japan Patent Office Commissioner Shiga Number of characters: 1, case description 1988 Special Permit Application No. 0759162, Title of invention Coverage allowance material 3 Relationship with the case of the person making the amendment Patent applicant 4, Agent 5, Date of amendment order Voluntary action 6 Number of inventions increased by amendment None 7. Amendment Subject Specification - Contents of the amendment to the claims of the deceased 1. The statement of the claims is corrected as follows. lrl,, carrier sea 1-, carrier sea 1~
A fill of polymeric material mated with and adhered to silk 11. 4 attached to the surface of the polymer material
A dressing material comprising a six-degree tack pressure sensitive adhesive and a barb sheet mated with said pressure sensitive adhesive. 2. The carrier sheet weighs 35.15 kg/cm (500
A dressing material according to claim 1, characterized in that it has a modulus greater than psi). 3. The dressing material according to claim 2, wherein the carrier sheets 1 to 1 are made of polyolefin polymer. 4. The dressing material according to claim 3, wherein the polyolefin polymer is selected from the group consisting of polyethylene and polypropylene. 5. The dressing material of claim 1, wherein carrier sea 1 has a film thickness of from about 0.5 to about 5 mils. 6. A dressing according to claim 1, characterized in that the polymeric material is polyurethane. 7. Polyurethane is about 500 to about 3000 psi (
35,15-2] 1 kg/cnT). 8. The dressing material of claim 1, wherein the film has a film thickness of about 0.25 to about 5 mils. 9. Polymer material 300g at 40℃ and 80% relative humidity
Dressing material according to claim 1, characterized in that it has a water vapor permeability greater than /rrF/24 hours. 10. Dressing material according to claim 6, characterized in that the polyurethane is cast from an aqueous dispersion or emulsion. 11. The adhesive force between the carrier sheet 1- and the polymer film is about 5 to about 100/inch width (1,97 to 39.3
7 g/am width). 12. The dressing material according to claim 1, characterized in that the $ pressure adhesive is a water-based polymer acrylate adhesive. 13. Pressure sensitive adhesive from about 0.5 to about 2.5 oz/(yd)” (16,96-87178g/rr?
) The wrapping dressing material according to claim 1, characterized in that the amount is: 14°, 711 The wrapping dressing material according to claim 1, characterized in that the parts 1 to 1 are substrates coated with silicone. 15.The adhesive force between the pressure sensitive adhesive and the peelable adhesive is approximately 5-100 g/inch (1,97-
39,37g/qm width) as set forth in claim 1, the covering material of The wrapping dressing material according to claim 1, characterized in that the adhesive force between the pressure-sensitive adhesive and the release sheet is greater than the adhesive force between the pressure-sensitive adhesive and the release sheet.17. Claim 1 characterized in that it exists in the form of two or more fractionated sheets.
Coverage allowance materials listed in section. 18, a film of polymeric material and a pressure sensitive adhesive 4
At least 300g/at 0°C, 80% relative humidity
The covering dressing material A according to claim 1, characterized in that it has water vapor permeability for 24 hours. 19. The wrapping material o'1゜20 according to claim 1, characterized in that the carrier sea 1 is transparent.
The dressing material according to claim 1, characterized in that the carrier sheet is translucent. 2], after casting an aqueous dispersion of a polymer onto a carrier sheet and drying the dispersion to form a film of polymer material adhered to the carrier sheet 1~, a pressure-sensitive adhesive applied on a release sheet; The agent mentioned above? -Material 11 A method for producing a covering dressing material, which comprises applying it to the exposed surface. 22. The manufacturing method according to claim 21, wherein the aqueous dispersion of the polymer is an aqueous dispersion of polyurethane. 23. The method of claim 21, wherein the carrier sheet is a polyolefin having a film thickness of about 0.5 to about 5 mils. 24. The film of polymeric material has a thickness of about 0.5 to about 5 min (
) Claim 2L, characterized in that it has a thickness of
The manufacturing method described in section. 25. Polymer material film is about 500 to about 3000
ps1 (35-211kg/cn?) 17) Modlast approx. 1500- approx. 8000psi (105-5
8! according to claim 21, characterized in that it has a tensile strength of 62 kg/e). i1 construction method. 26. The carrier sheet has a fill of about 0.5 to about 5 mil.
\The manufacturing method according to claim 21, characterized in that the thickness is increased. 27. The manufacturing method according to claim 21, wherein the pressure-sensitive adhesive is an acrylic pressure-sensitive adhesive having a dry viscosity of λ'1. ”

Claims (1)

[Claims] 1. A carrier sheet, a film of a polymeric material that is assembled with the carrier sheet and brought into contact with the carrier sheet, and a surface attached to the surface of the polymeric material! Wrapping material containing a tacky pressure-sensitive adhesive and a release sheet that has been tied to the pressure-sensitive liquid 11". 2 The carrier sheet is 35.15 kg 76 m (500 p
si) The wrapping material according to claim 1, characterized in that it has a monodulus greater than si). 6. The wrapping material according to claim 2, characterized in that the carrier sheet is made of a polyolefin polymer. 4. The polyolefin/polymer is selected from the group consisting of polyethylene/and polypropylene. All features and f6
% coverage allowance material as stated in claim 6. 5. The carrier sheet has a thickness of about 11.5 to about 5 mils.
Rem thick all mokkoto all characteristics motion rod claim σ') i! i
l) Coverage materials as described in paragraph 1. 6. The dressing material according to claim 1, characterized in that the polymeric material is polyurethane. Z Polyurethane is about 500 to about 3000 osi (35
, 15 to 211 g/cfIL). 8. The film is about 0.25 to about 5 mil σ) Film 1
(The wrapping material according to claim 1J, characterized in that it has a full weight of λ.) 9 The polymer material weighs 300 g at 40°C and 80% humidity
/rri'724 hours or more
Coverage allowance materials. 10. Claim 6, characterized in that the polyurethane is cast from an aqueous dispersion C' temporary or emulsion.
Coverage allowance materials listed in section. 11. The eyebrow force between the carrier sheet and the polymer film (σ) is about 5 to about 100 g/I/I width (197 to 6967
g1Cn River]) The wrapping dressing material according to claim 1 J:i'J. 12Nr, Q, pressure is blue [1st round covering material. 13J, I'% pressure adhesive from about 05 to about 25 oz/s/(
2 (16.96 to F34.78 g/m2). 14. Claim 1, characterized in that the JJ 1ili sheet is a substrate coated with Silico-7 +i! ＜, Coverage allowance materials. 15, ii & pressure 1 raw contact 7f: The shoulder contact force of 1[i] between the T agent and the peeled 1η) f sheet is approximately 5 to 1ooy/i/chi r1
] (1,97-6967g/width) qI * s blue 16. 1 with a carrier sheet and a film of polymer material
NjcZ) The wrapping dressing material according to claim 1, characterized in that the contact force is smaller than the same contact force between the pressure sensitive agent and the release sheet. 1Z The dressing material according to claim 1, characterized in that the release sheet is present in the form of at least two separated sheets. 18 The film of polymeric material and the pressure sensitive adhesive have a temperature of at least 300°C at 40°C and 80° relative humidity. !
The dressing material according to claim 1, characterized in that it has a water vapor permeability 'fX- of 9/A/24 hours. 19. The wrapping dressing material as set forth in claim 1, characterized in that the carrier sheet is transparent. The wrapping dressing material according to claim 1, wherein the carrier sheet is translucent. 2. After fully casting an aqueous dispersion of the polymer onto a carrier sheet and completely drying the dispersion to form a film of the polymer material layered with the carrier sheet f and τ, a film of the polymer material layered on the carrier sheet is separated. 1. A method of manufacturing a dressing material comprising applying a pressure 1 raw encrusting agent to the bearing surface of said polymeric material. η, the aqueous dispersion of the polymer is an aqueous dispersion of polyurethane/g
Own manufacturing method. 2 Carrier sheet is about 0.05 to about 5 mil film)!
Patent 24, wherein ', ', 'r is an olefin/. Claim 21, wherein the film of polymeric material has a thickness of about 0.5 to about 5 mils [ii Manufacturing method of mountain ii, 14. 25, , 4;' +1 7 - The film of the material is approximately 50o to isoo. nsi (35 ~ 21 1/cg/7l) ff)
Moji' - 7 strokes about 1500 notes: ('Shi's pi!
j previous method. %. Film 1' where the carrier sheet is about 0.05 to about 5 mil.
; A 'F 'j and all the features of claim 21 vCid l4 IIJ 11,t noj method. 27, 7. '4$l/IE The manufacturing method according to claim 21j, characterized in that the adhesive is an acrylic pressure-sensitive adhesive after drying.