KR20120037935A - Roll-shaped medical adhesive tape and manufacturing method therefor - Google Patents

Abstract

A pressure-sensitive adhesive layer is formed on one side of the support, and the roll-shaped medical adhesive tape wound in a roll shape has a thickness of 50? It consists of a 200 micrometer nonwoven fabric, and the back surface on the opposite side to the adhesive layer of a support body is formed with the recessed part by heat | fever perforation in linear shape in the width direction perpendicular | vertical to the winding direction of a tape, and the depth of the recessed part is a support body. About the thickness of 5? 60%, and the space | interval of a recessed part is 0.5? The roll-shaped medical adhesive tape which is 1.5 mm and is wound around the adhesive layer of an adhesive tape so that it may contact the back surface of a support body, and is formed in roll shape.

Description

ROLL-SHAPED MEDICAL ADHESIVE TAPE AND MANUFACTURING METHOD THEREFOR}

TECHNICAL FIELD The present invention relates to a rolled medical adhesive tape, and more particularly, a medical adhesive tape having a nonwoven fabric having excellent breathability and elasticity as a support, in a roll shape by directly winding without interposing a release liner (also referred to as a "separator"). The present invention relates to a roll-shaped medical pressure-sensitive adhesive tape which is wound up, has good insulation (hand cut property), visibility (probability that the cut surface in the tape transverse direction is straight), workability at the time of wearing gloves, and a method of manufacturing the same.

Medical adhesive tapes are used for protecting wounds and wounds and for fixing to skin surfaces such as gauze, cotton wool, catheters, tubes, and poultices. Generally, the medical adhesive tape has the laminated constitution which provided the adhesive layer in the single side | surface of the support body which uses paper, cloth, a plastic film, etc. as a raw material. For example, the soft vinyl chloride film is widely used as a support for an emergency band aid because of its excellent ductility, stress relaxation property, printability, and the like and low cost. However, such plastic films do not have sufficient fit to the skin surface, and also have insufficient flexibility and breathability.

On the other hand, since a nonwoven fabric is excellent in air permeability and does not rub well at the time of sticking, it is suitable as a support body of the medical adhesive tape. In addition, recently, stretchable nonwoven fabrics made of polyurethane and polyester have been developed, and the use of these stretchable and breathable nonwoven fabrics as a support for adhesive tapes has caused skin disorders such as venom rise, itching, and red spots. It is hard to generate | occur | produce, and also the adhesive tape which can follow the movement of affixed skin can be obtained (for example, refer patent document 1 and 2). In particular, the pressure-sensitive adhesive tape having a polyurethane nonwoven fabric having excellent breathability and elasticity as a support has all characteristics excellent as a medical pressure-sensitive adhesive tape (see, for example, Patent Documents 3 and 4).

In addition to all the above characteristics, the medical adhesive tape often requires hand cutability that can be cut by hand. Various provisions are made conventionally about provision of the hand cut property of an adhesive tape. As an example which improved the insulation by punching a hole in an adhesive tape, the method of forming a perforation line in a binder impregnated nonwoven web, or forming a hole so that an edge part may form a row in at least 1 direction is proposed (patent document) 5 and 6).

Moreover, there exists an example (refer patent document 7) of the adhesive tape which processed the nonwoven fabric with the chemical binder and formed the pattern which does not penetrate completely. Also in patent document 6, it is described that the hole in which the hole does not penetrate may be sufficient.

However, the adhesive tape which made the support body a nonwoven fabric is generally difficult to cut by hand, and even if it can be cut by hand, there existed a problem that the cut surface often cut | disconnected in the irregular state (uneven cutting edge). . Moreover, when the perforation line is placed on the support, it becomes difficult to maintain the strength of the adhesive sheet itself. In order to improve the strength of the adhesive sheet, when the nonwoven fabric is treated with a chemical binder or the like, there arises a problem that the function and texture of the nonwoven fabric are not utilized in the adhesive tape.

On the other hand, the thickness is 0.5? There is a case in which a 5 mm nonwoven fabric is formed with concave depressions of a continuous or discontinuous pattern by embossing to improve insulation (see Patent Document 8). The adhesive tape is applied to applications such as cleansing, cooking, wipers, and the like, and has a thickness of 50? The insulation and visibility required for the medical adhesive tape of about 200 micrometers cannot be realized.

Japanese Patent Laid-Open No. 2-14059 (corresponds to US 5,239,701 and EP 0341875 A1) Japanese Patent Laid-Open No. 9-560 (corresponds to EP 0749756 A2) Japanese Unexamined Patent Publication No. 10-33585 Japanese Patent Application Laid-Open No. 11-9623 Japanese Patent Application Laid-open No. Hei 9-502111 (corresponding to WO 95/06450 and US 5,496,605) Japanese Unexamined Patent Publication No. 2007-330376 (corresponds to US 2007/0212520 A1 and EP 1822261 A2) Patent 3431628 (corresponding to WO 93/15245, US 5,496,603, US 5,631,073 and US 5,679,190) Japanese Unexamined Patent Publication No. 2000-345454

This invention is made | formed in view of the said problem, and the subject is providing the roll-shaped medical adhesive tape which is excellent in insulation, can be cut | disconnected straight, and workability | operativity is good also at the time of wearing gloves.

According to this invention, the adhesive layer is formed in the single side | surface of a support body, and is roll-shaped medical adhesive tape wound in roll shape,

(1) The support has a fiber length of 1? Made of a nonwoven fabric formed of 20 mm of synthetic resin fibers,

(2) On the back surface opposite to the pressure-sensitive adhesive layer of the support, a concave depression that does not penetrate the nonwoven fabric by the heat perforation, which is straight in the width direction perpendicular to the winding direction of the tape, is formed,

(3) The depth of the recess is 5? It is 60% of depth, and the space | interval of the recessed part is 0.5? 1.5 mm, and also

(4) There is provided a roll-shaped medical pressure-sensitive adhesive tape in which the pressure-sensitive adhesive tape is wound so that the pressure-sensitive adhesive layer is in contact with the rear surface of the support.

According to the present invention, in the insulating agenda test, the tear insulation resistance in the width direction is 2.0? 5.0 N and tear propagation resistance of 0.5? 2.5 N / 25 mm, and the tensile strength in the winding direction of the tape is 5? The said roll-shaped medical adhesive tape which is 50 N / 25 mm, visibility is 80% or more, and large glove adhesive force is 1.0 N or less is provided.

According to the present invention, the thickness of the nonwoven fabric is 50? 200 µm, and its basis weight is 20? The roll-shaped medical adhesive tape of 60 g / m 2 is provided.

According to this invention, the manufacturing method of the rolled medical adhesive tape which further includes the process of forming a recessed part by heat | frilling with a heat embossing roll is provided.

According to the present invention, there is provided a roll-shaped medical adhesive tape having a breathable nonwoven fabric as a support, which has good insulation and visibility and good workability in a state where a glove is attached, and a manufacturing method thereof. do.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows the shape of the sample piece used for an insulating agenda test.
It is a figure which shows the test apparatus used for the measurement of 10 operation time.
It is a photograph which image | photographed the shape of the vicinity of the insulation part of the test piece after the visibility test about Example 1, the comparative example 2, and the comparative example 3 in order from the left side.

The rolled medical adhesive tape (hereinafter may be simply referred to as "adhesive tape") of the present invention has an adhesive layer on at least one surface of the support. This support body is comprised from a nonwoven fabric.

EMBODIMENT OF THE INVENTION Hereinafter, preferable embodiment of the nonwoven fabric of this invention is described.

The nonwoven fabric used for the adhesive tape of this invention has a fiber length of 1? 20 mm, fineness of 1? It is produced using a fiber that is 30 denier. If the fiber length is less than 1 mm, the strength when the sheet of the nonwoven fabric is formed is low, and if the fiber length exceeds 20 mm, the bonding points between the fibers are increased, and the hand cut property is deteriorated. When the fineness is less than 1 denier, the elasticity of the nonwoven fabric is lowered and the workability is deteriorated. When the fineness exceeds 30 denier, the elasticity is excessively strong, so that a feeling of discomfort when the adhesive tape is attached to the human body may be increased. The basis weight of nonwoven fabric is 20? 60 g / m 2, and the thickness thereof is 50? It is preferable that it is 200 micrometers. The fiber to be used may be a synthetic fiber having a property of melting with respect to heat, and as the material thereof, for example, polyolefin such as polyethylene or polypropylene, polyester such as polyethylene terephthalate (PET), nylon, polyurethane or the like Can be mentioned. To these fibers, for example, wood pulp or the like may be blended in any ratio for the purpose of softening the texture. When mix | blending wood pulp, the ratio of synthetic fiber: wood pulp is 99: 1? It is preferable to carry out in the range of 70:30 (weight ratio).

In the adhesive tape of this invention, when the nonwoven fabric manufactured by the airlaid manufacturing method which can make the vertical and horizontal orientation of a fiber uniform can be used, since a fiber is moderately cut | disconnected by heat perforation, it is advantageous for hand cut property. However, if a fiber or a nonwoven fabric satisfies the above conditions, a nonwoven fabric produced by another manufacturing method can be used. On the other hand, a nonwoven fabric produced by a manufacturing method in which the length of the fiber is substantially infinite, such as a spanbonded nonwoven fabric, is not preferable because the fiber is not properly cut by heat drilling.

The nonwoven fabric of the present invention has a basis weight of 20? 60 g / m <2> is preferable and 30? 50 g / m <2> is more preferable. If basis weight is less than 20 g / m <2>, since the elasticity of a nonwoven fabric will fall, handling property will deteriorate. When the basis weight exceeds 60 g / m 2, the thermal bonding points of the fibers increase, the nonwoven fabric is strengthened, and the cutability tends to be lowered.

The thickness of the nonwoven fabric of this invention is 50? 200 micrometers is preferable, and 80? 150 micrometers is more preferable. When thickness is less than 50 micrometers, the distance between the fibers which comprise a nonwoven fabric becomes short, the thermal bonding point between fibers may increase, a nonwoven fabric may become strong, and cutability may fall. On the other hand, when thickness exceeds 200 micrometers, the distance between the fibers which comprise a nonwoven fabric becomes long, the thermal bonding point between fibers will reduce too much, and a nonwoven fabric tends to become weak. The thickness of a nonwoven fabric is measured in the state which applied the pressure of 1 kPa to a nonwoven fabric according to Japanese Industrial Standard JISL1096.

As the nonwoven fabric used in the present invention is subjected to a thermal drilling process that does not penetrate the nonwoven fabric in a substantially straight continuous pattern, it is easy to cut the nonwoven fabric linearly. By controlling the degree of thermal drilling, the insulation can be controlled. Although the depth of each recessed part formed by thermal drilling does not necessarily need to be uniform, it is 5 to the thickness of a nonwoven fabric. It is necessary to exist in 60% of range. If there is a concave depression of more than 60%, the tensile strength of the adhesive tape is significantly lowered, and if there is a concave depression of less than 5%, it becomes difficult to impart hand cut properties. The depth of perforation means the depth of the recessed part from the surface of the nonwoven fabric support body before thermal drilling. The depth of a recessed part cuts a medical adhesive tape along the winding direction of a tape, takes a photograph of the cross section of a recessed part, and measures it.

The space | interval of each recessed part formed by the thermal drilling process is 0.5? It is the range of 1.5 mm, Preferably it is 0.7? It is in the range of 1.3 mm. When the clearance gap of each recessed part exceeds 1.5 mm, it may need to confirm and select a cut position at the time of a hand cut. If the gap between the recessed portions is less than 0.5 mm, neighboring perforations will interfere with each other, and if a hand cut is made, the cut will be cut over a plurality of perforations, resulting in an oblique cut surface. It is preferable that the space | interval of each recessed part is an equal space | interval along the winding direction of a tape from a viewpoint of hand cut property. The space | interval of each recessed part means the distance along the winding direction of the tape of the deepest parts of an adjacent recessed part.

As a method of forming the concave depressions by thermal drilling, processing by a heating blade, processing by laser irradiation, processing by a heating embossing roll, and the like can be adopted. Among them, a heating embossing roll is used. The method is preferred. For example, the heating embossing roll which protruded the linear continuous pattern in the width direction of the roll at predetermined intervals in the circumferential direction of a roll, and the anvil roll with the smooth surface are arrange | positioned facing each other, and the support body which is a nonwoven fabric between these rolls. By passing it through, a straight concave depression can be formed in a support body. At this time, it is not necessary to apply pressurization by a roll to the support body which is a nonwoven fabric. The depth of the concave depressions formed by thermal drilling can be adjusted by the distance between the emboss roll and the anvil roll. As an embossing roll, a metal roll is used. As the anvil roll, a stainless steel roll having a smooth surface, a rubber roll having a smooth surface coated with silicone rubber on a core, or the like can be used.

The embossing roll needs to be heated to the temperature at which the synthetic fiber forming the nonwoven fabric is melted. It is preferable to heat an embossing roll at the temperature between about 150 degreeC and about 300 degreeC normally. Although the anvil roll does not need to be heated, you may heat it to the same temperature as an emboss roll in order to avoid the thermal effect on an emboss roll as needed.

By embossing the nonwoven fabric with the temperature of the protruding forming portion of the embossed roll surface equal to or higher than the melting point of the fiber, the fibers are melted in the thickness direction of the nonwoven fabric, filmed or cut, and concave in the thickness direction of the nonwoven fabric. Depression occurs. In this recessed part, since the fiber is partially cut | disconnected, tearing strength falls. Therefore, cut of an adhesive tape tends to occur along this recessed part, and an adhesive tape can be cut in a substantially linear shape.

The cross-sectional shape of the concave depressions formed by the thermal drilling process is not particularly limited as long as the shape does not interfere with hand-cutting properties. It is preferable to set the concave depression of the cross-sectional shape of a triangular roof type from a viewpoint of ensuring insulation and ease of manufacture.

As an adhesive used for an adhesive layer, an acryl-type adhesive, a rubber-type adhesive, a silicone type adhesive, etc. are used, Among these, a thing with small skin irritation is preferable.

As an acrylic adhesive, C4-C4, such as butyl acrylate, 2-ethylhexyl acrylate, isononyl acrylate, etc. (Meth) acrylic acid, vinyl acetate, styrene, vinylpyrrolidone, acrylamide, and hydride based on homopolymers or copolymers of about 12 long-chain (meth) acrylic acid ester monomers or (meth) acrylic acid ester monomers 2 or more types of other copolymerizable monomers, such as oxyethyl acrylate and hydroxypropyl acrylate, are 2? The copolymer formed by copolymerizing in the range of 50 weight% is mentioned.

The acrylic pressure-sensitive adhesive may be a solvent type obtained by polymerizing the monomer in an organic solvent such as toluene, hexane, ethyl acetate, etc., using a peroxide such as benzoyl peroxide as an initiator and in a nitrogen atmosphere, and emulsifying the monomer with an emulsifier in water. It may be an emulsion type obtained by polymerization after dispersion. It is preferable to crosslink a polymer by adding an appropriate amount of polyfunctional resins, such as an epoxy resin, to an acrylic adhesive after superposition | polymerization and before coating to a sheet | seat or a film support body.

As a rubber-based adhesive agent, the composition which mix | blended tackifying resin, a softener, etc. with rubber bases, such as a synthetic polyisoprene rubber and a styrene- isoprene-styrene block copolymer, is mentioned, for example.

The thickness of an adhesive layer is usually 10? 200 μm, preferably 20? 100 μm. The adhesive force of an adhesive means the adhesive force (peel force) of the large bakelite plate of an adhesive tape (it refers to the adhesive force with respect to the bakelite plate of the adhesive tape of width 25mm measured according to the "180 degree peeling method" of JIS Z 0237). , Preferably 0.4? 3.0 N / cm, More preferably, it is 0.6? It is preferable to adjust so that it may be in the range of 2.5 N / cm.

Coating of an adhesive can be performed by the method of apply | coating the adhesive liquid which uses the organic solvent or water as a medium directly on a support body by coating apparatuses, such as a reverse roll coater, a comma roll coater, and a bar coater. Or this adhesive liquid is apply | coated on so-called separator sheets, such as paper support, polyester films, etc. which were processed by peeling agents, such as a silicone resin, and glassine, and dried in a hot air apparatus, and then an adhesive layer The method of bonding a support body on it and transferring the adhesive layer to the single side | surface of a support body can also be employ | adopted.

Examples of the release agent that can be used in the present invention include long chain alkyl group pendant release agents and silicone release agents. As a long-chain alkyl group pendant peeling agent, C12 or more linear alkyl-group containing monomers, such as a stearyl acrylate, a stearyl acrylamide, and a stearyl vinyl ether, Copolymers, such as acrylic acid, vinyl acetate, an acrylonitrile; And modified polymers obtained by pendant a polymer such as an alcohol with a long chain alkyl component such as alkylloyl chloride or alkyl isocyanate. The fluorine-based peeling agent which substituted the hydrogen atom of these alkyl groups by the fluorine atom can also be used. Examples of the silicone release agent include polydimethylsiloxane as a base polymer, polymethylhydrogensiloxane and the like, and crosslinking is carried out. The crosslinking reaction is broadly divided into condensation type and addition type.

Thereafter, the separator sheet is removed and wound into a roll so that the pressure-sensitive adhesive layer is in direct contact with the back surface of the support. Winding is performed on gentle conditions so that excessive tension may not be given to core materials, such as a paper tube. In a winding-up process, it cuts to a predetermined width with a slitter and winds up to a chuck | zipper, or cuts the semi-finished product wound up to a chuck | zipper by a core cutter to make a roll-shaped medical adhesive tape.

Preferably, the roll-shaped medical adhesive tape of the present invention has a tear insulation resistance force in the width direction in an insulating agenda test to be described later. 5.0 N, more preferably 2.5? It is in the range of 4.5N, and tear propagation resistance becomes like this. 2.5 N / 25 mm, More preferably 1.0? It is preferable from the viewpoint of insulation that it exists in the range of 2.0N / 25mm.

When the tear insulation resistance in the width direction exceeds 5.0 N, the insulation is inferior, and when the tear insulation resistance is less than 2.0 N, it is inadvertently cut at the time of handling or pasting, and it is easy to cause trouble in practical use. In addition, the tear propagation resistance is ideally 0 N (completely cut in the width direction at the same time as insulation), but 0.5? If it is 2.5N / 25mm, it is possible to hand cut without stress.

As for the roll-shaped medical adhesive tape of this invention, the width | variety of an adhesive tape becomes like this. 100 mm, more preferably 12? It is preferable from a viewpoint of insulation that it exists in the range of 50 mm, and there exists no cross | interval in the distance of the tape flow direction from a break start to a complete break in an insulation agenda test, and is straight in a horizontal direction. Specifically, when hand-cutting 10 pieces continuously, it is preferable that the probability (visibility) that the cut surface of a tape transverse direction is straight is 80% or more. The upper limit of the visibility is 100% and in many cases 98%. If the cut surface is not a straight line and the unevenness (the cut surface is irregular) is large, the appearance is bad, and when the two tapes are affixed in the approximately orthogonal direction at a close distance, the uneven point interferes with the adjacent tape, and the tape may overlap. Occurs. In the case where the medical adhesive tape is used for applications such as fixing a puncture needle, if the adhesive tape is inadvertently overlapped, two pieces may be peeled off at the same time due to the overlapping point when peeling one by one, which may lead to a needle accident.

As for the roll-shaped medical adhesive tape of this invention, the tensile strength (A) of the longitudinal direction (a winding direction) of a tape becomes like this. 50.0 N / 25 mm, more preferably 10.0? 20.0 N / 25 mm. If the tensile strength is less than 5.0 N / 25 mm, there is a possibility of breaking due to lack of strength when the thick material is fixed. On the other hand, when the tensile strength in the longitudinal direction of the medical adhesive tape exceeds 50.0 N / 25 mm, the strength of the nonwoven fabric is increased, so the hand cut property is deteriorated.

Rewinding force (B) of roll-shaped medical adhesive tape becomes like this. 4.0 N / 25 mm, More preferably 1.0? It is in the range of 2.5 N / 25 mm. It is preferable that the rewinding force exists in the said range from a viewpoint of the rewinding property of the adhesive tape. If a rolled medical adhesive tape satisfies the relationship of the tensile strength (A)> rewinding force (B) of the longitudinal direction, it will not be broken at the time of rewinding.

Medical adhesive tapes are often handled in a medical scene in a state where a doctor or a nurse wears a medical glove (globe). In the roll-shaped medical adhesive tape of this invention, in the use test at the time of glove attachment assumed actual use, it is preferable that the adhesive force with respect to the glove at the time of hand cut is 1.0 N / 25 mm or less. When this adhesive force exceeds 1.0 N / 25 mm, when hand-cutting continuously, since a tape will adhere excessively to a glove and it will become difficult to remove a tape from a glove, workability will fall remarkably. The lower limit of the large-glove adhesive force is usually 0.1 N / 25 mm, and in many cases 0.2 N / 25 mm.

The roll shaped medical adhesive tape of this invention can be used suitably for the use used as a dressing tape, a surgical adhesive tape, etc. directly affixed on the skin (skin) of a person.

Example

Although an Example and a comparative example are given to the following and this invention is demonstrated more concretely, this invention is not limited to these Examples.

<Test method>

(1) Test atmosphere:

The test atmosphere was adjusted to a temperature of 23 ± 2 ° C and a relative humidity of 65 ± 5% to measure various properties. The sample was previously adjusted for 24 hours in the same atmosphere.

(2) Tear insulation resistance and tear propagation resistance by insulation agenda test:

A sample piece of a roll-shaped medical adhesive tape cut to a width of 25 × 78 mm is displayed in an equilateral large shape as shown in FIG. 1, and an oriented polypropylene tape (OPP tape) is disposed on the upper and lower sides of the sample piece. ) Was bonded. Using a tensile tester (TENSILON RTC-1250 manufactured by ORIENTEC Co., Ltd.), the holding interval is set to 10 mm, and the long side (b) is loosened while pulling the trapezoidal short side (a) of the sample piece, and the handle portion (shown in FIG. 1) 2, 2 kPa), and the stress at the time of tearing was measured by the tension rate of 1000 mm / min.

The data calculated | required the initial load (tear insulation resistance) which is a maximum load, and the average value (tear propagation resistance force) of the part from which the comparative stress stabilizes after that.

(3) Tensile strength:

According to Japanese Industrial Standard JIS K 7115, both ends of the sample piece were straightened by the said tension tester, the tension | tensile_strength was pulled out by 50 mm of holding | maintenance intervals, and 300 mm / min of tensile velocity, and the maximum load until breaking is calculated | required.

(4) large glove adhesion test:

It is plastic glove [product number: plastic glove powder free No. made of polyvinyl chloride] in hand 50, manufactured by Kyowa Co., Ltd., and a 25-mm-wide wound bandage (roll-shaped medical adhesive tape) is loosened to a length of about 100 mm, and then the adhesive of the band-aid that wraps the index finger on the back of the band-aid that wraps the thumb. The tape was hand cut against the cotton, and the adhesive tape was attached to the index finger. Thereafter, the end portion of the tape was gripped and pulled at a speed of 300 mm / min using the tensile tester to obtain a load required for the glove and the tape to be peeled off to obtain a large glove adhesive force. This test was conducted on five subjects and the average value was obtained.

(5) 10 operation hours ：

It is plastic glove [product number: plastic glove powder free No. made of polyvinyl chloride] in hand 50, manufactured by Kyowa Co., Ltd., while unwinding the 25 mm wide wound bandage (roll-shaped medical adhesive tape) while cutting the test piece 5 having a length of about 100 mm by hand, the wood shown in FIG. The upper part 10 of the test piece 5 in the glass plate 4 (75 cm x 12 cm) fixed to the mount 3 perpendicularly | vertically. The time required in order to repeat the operation which affixes 20 mm in a perpendicular direction 10 times was measured. Five subjects were implemented, the average value was calculated | required, and rounded off.

(6) Visibility:

The visibility of the ten test pieces visually observed by the above operation was visually observed, and the ratio occupied by the clean (lateral straight line) test piece with a cut surface was determined. The test by five subjects was done, the average value was calculated | required, and it was set as the value of 5% pitch by moving injecting. About Example 1, the comparative example 2, and the comparative example 3, the example of the shape of the vicinity of the visibility part of the test piece after a visibility test is shown in FIG.

(7) rewinding force:

The rewinding force loads a sample wound with a paper tube with a diameter of 1 inch to a rewinding roller, fixes the rewinding roller to a lower chuck of a tensile tester (TENSILON RTC-1250 manufactured by ORIENTEC Co., Ltd.), and has a diameter of 300 ± 20 mm per minute. The length was rewound at a speed of 300 mm, and the load at that time was measured.

[Example 1] (Manufacturing method of turntable)

Wood pulp was mixed (PET / pulp = 8: 2) to the polyester fiber of fiber length 5mm and fineness 2 denier, and the nonwoven fabric which made basis weight 40g / m <2> and thickness 100micrometer was used as a support body. This nonwoven fabric is manufactured by the airlaid method.

30 g / m <2> of the acrylic adhesive (83 weight% of isononyl acrylates, 16 weight% of methoxy nonaethylene glycol, and 1 weight% of nonaethylene glycol methacrylates) solution dried on a separator sheet Coated to be. In this way, the said support body (nonwoven fabric) was affixed and adhered on the adhesive layer formed, and it was set as the adhesive tape.

The embossed roll which protruded and formed the roof-shaped horizontal straight line protrusion of the isosceles triangle cross section which is 400 micrometers in height and 500 micrometers in width | variety in width 300mm diameter 200mm was 500 micrometers. The heated embossing roll is opposed to the anvil roll having a smooth surface at normal temperature, and the adhesive tape is passed through both rolls while the separator sheet side is in contact with the anvil roll, so that the transverse straight-line roof pattern is placed on the opposite side of the adhesive applying surface ( Support side). The embossing roll was heated at 270 degreeC. The formed recessed part was 1 mm pitch in the winding direction (length direction; MD) of a tape, and the drilling depth is 30? 50 μm. The puncture depth has shown the range at the time of measuring the puncture depth of 20 points by 10 cm space | interval in a winding direction.

The adhesive tape thus produced was wound in a length of 7 m in a 1 inch diameter paper tube while cutting the separator sheet, cut into 25 mm width, and a rolled medical adhesive tape wound immediately was produced. The composition of a nonwoven fabric and the shape of a recessed part are shown in Table 1, and a test result is shown in Table 2, respectively.

[Example 2]

As a support body, it carried out similarly to Example 1 except having used only the fiber length of 5 mm and fineness 2 denier polyester fiber, and using the nonwoven fabric which made 35 g / m <2> and 90 micrometers of basis weights, and is a roll-shaped medical adhesive tape Was produced. The composition of a nonwoven fabric and the shape of a recessed part are shown in Table 1, and a test result is shown in Table 2, respectively.

EXAMPLE 3

As the support, only a polypropylene fiber having a fiber length of 3 mm and a fineness of 1.5 denier was used, a nonwoven fabric having a basis weight of 40 g / m 2 and a thickness of 120 µm was used, and the temperature of the embossing roll was set to 150 ° C. The composition of a nonwoven fabric and the shape of a recessed part are shown in Table 1, and a test result is shown in Table 2, respectively.

EXAMPLE 4

As a support body, wood pulp and tencel were mixed (PET / pulp / tencel = 8: 1: 1) with polyester fiber of fiber length 8mm and fineness 7 denier, and the basis weight was 40 g / m <2> and thickness was 150 micrometers. Except having used the nonwoven fabric, it carried out similarly to Example 2, and produced the rolled medical adhesive tape. The composition of a nonwoven fabric and the shape of a recessed part are shown in Table 1, and a test result is shown in Table 2, respectively.

[Comparative Example 1]

As the support, Example 2 was used, except that a polypropylene fiber having a fiber length of substantially infinite (∞) and a fineness of 5 denier was used, and a spunbond nonwoven fabric having a basis weight of 40 g / m 2 and a thickness of 80 µm. In the same manner, a rolled medical adhesive tape was produced. According to the span bond method, the nonwoven fabric which consists of long fibers of infinite fiber length is formed. The composition of a nonwoven fabric and the shape of a recessed part are shown in Table 1, and a test result is shown in Table 2, respectively.

[Comparative example 2]

The support is a polypropylene nonwoven fabric, and the composition and perforation shape of the nonwoven fabric are shown in Table 1 and the test results in Table 2, respectively, for the commercially available tape having through-piercing.

[Comparative Example 3]

The composition and shape of the nonwoven fabric are shown in Table 1, and the test results are shown in Table 2, respectively, for the commercially available tape, in which the support is a polyester / pulp nonwoven fabric and has no perforations or recesses.

[Comparative example 4]

The support is a polyester / pulp nonwoven fabric, and the composition of the nonwoven fabric and the shape of the perforation are shown in Table 1 and the test results in Table 2, respectively, with respect to the commercially available tape having through-piercing.

[Comparative Example 5]

The support body is a polyester / rayon nonwoven fabric, and the composition of the nonwoven fabric and the shape of the perforation are shown in Table 1 and the test results in Table 2, respectively, with respect to the commercially available tape having through perforations.

(footnote)

(* 1) Skinnagate Mesh (manufactured by Nichiban Corporation, registered trademark)

(* 2) "ST-21N" (Nichiban Corporation make)

(* 3) `` Yukiban GS '' (manufactured by Nitto Denko Co., Ltd.)

(* 4) `` Transpor White '' (3M Healthcare Co., Ltd., registered trademark)

(* 5) Since it was not directly related to the perforation state of a nonwoven fabric, it was not measured.

As is evident from the results shown in Tables 1 and 2, the roll-shaped medical adhesive tape (Examples 1 to 4) of the present invention has good insulation and visibility. In particular, the adhesive tapes of Examples 1 and 4 were not only excellent in insulation and visibility, but also in tensile strength. Moreover, since the roll-shaped medical adhesive tape (Examples 1-4) of this invention does not require excessive force at the time of a tape cut, the adhesive tape could be easily removed from the glove.

On the other hand, although the adhesive tape of the comparative example 1 melt | dissolved the fiber of a nonwoven fabric, although the deep recessed part was formed, since the fiber was not cut | disconnected moderately, insulation was bad and visibility was also bad. In addition, Comparative Example 2? The band-aid wound using the nonwoven fabric of 5 commercial items as a support body not only required the force at the time of insulation but also had bad visibility as shown in FIG. Comparative Example 1? Since the adhesive tape of 5 needed force at the time of a tape cut, it adhered excessively to a glove and it was difficult to remove a tape from a glove.

Industrial availability

The rolled medical adhesive tape of the present invention can be used for the protection of skin lesions, fixation of gauze, catheter, puncture needle and the like in the medical field.

Since the roll-shaped medical adhesive tape of the present invention has good insulation, can be cut straight, and workability is good even when gloves are worn, it can contribute to improvement of workability in the medical field, especially in the surgical field, and disease Or to improve the treatment of injuries. Moreover, since a recessed part can be formed by the thermal perforation by a heating embossing roll, the rolled medical adhesive tape of low cost and favorable insulation can be manufactured. For this reason, the rolled medical adhesive tape of this invention can contribute to the improvement of patient burden and medical finance.

1, 1 '： Attaching point of OPP film
2, 2 ： Handle part in insulation agenda test
3 ： Wooden stand
4 ： Glass plate
5 ： Test piece

Claims (13)

In the roll-shaped medical adhesive tape in which an adhesive layer is formed on one side of a support body and wound in a roll shape,
(1) The support has a fiber length of 1? Made of a nonwoven fabric formed of 20 mm of synthetic resin fibers,
(2) On the back surface opposite to the pressure-sensitive adhesive layer of the support, a concave depression that does not penetrate the nonwoven fabric by the heat perforation, which is straight in the width direction perpendicular to the winding direction of the tape, is formed,
(3) The depth of the concave depression is 5 to 60% of the depth of the support, and the spacing of the concave depression is 0.5? 1.5 mm, and also
(4) The roll-shaped medical adhesive tape in which the adhesive tape is wound around the adhesive layer so as to contact the rear surface of the support and formed in a roll shape. The method of claim 1,
In the insulation agenda test by the measuring method disclosed in this specification, the tear insulation resistance in the width direction is 2.0? 5.0 N, and tear propagation resistance is 0.5? Roll-shaped medical adhesive tape of 2.5 N / 25 mm. The method of claim 1,
Tensile strength of the winding direction of the tape measured by the measuring method disclosed in this specification is 5.0? Roll-shaped medical adhesive tape of 50.0 N / 25 mm. The method of claim 1,
The roll shape medical adhesive tape whose visibility measured by the measuring method disclosed in this specification is 80% or more. The method of claim 1,
Roll-shaped medical adhesive tape whose large glove adhesive force measured by the measuring method disclosed in this specification is 1.0 N or less. The method of claim 1,
The thickness of the nonwoven fabric is 50? Roll-shaped medical adhesive tape having a thickness of 200 μm. The method of claim 1,
Basis weight of the nonwoven fabric is 20? Roll shape medical adhesive tape of 60 g / m <2>. The method of claim 1,
The roll-shaped medical adhesive tape whose material of the said nonwoven fabric is polyolefin, polyester, nylon, or polyurethane. The method of claim 1,
The said nonwoven fabric is roll shape medical adhesive tape manufactured by the airlaid method. The method of claim 1,
The said adhesive is roll-shaped medical adhesive tape which is an acrylic adhesive. The method of claim 1,
The adhesive force with respect to the bakelite board of the adhesive tape of width 25mm measured according to Japanese Industrial Standard JIS Z 0237 is 0.4? Roll-shaped medical adhesive tape which is 3.0 N / cm. The method of claim 1,
The roll-shaped medical adhesive tape which measured by the measuring method as described in each specification, respectively, and whose tensile strength (A) of a winding direction is larger than a rewinding force (B). The manufacturing method of the rolled medical adhesive tape of Claim 1 containing the process of forming the recessed part which does not penetrate a nonwoven fabric by the thermal punching by a heating embossing roll.

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