JPS6185945A - Liquid-impermeable ethylene-containing polymeric foam support for absorbent products - 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 relates to pants (nether garment).
The present invention relates to a liquid-impermeable ethylene-containing polymeric film backing for absorbent articles adapted to be removably attached to a liquid-impermeable ethylene-containing polymeric film. Adhesive attachment means are located on the bottom surface of the support for temporarily but firmly adhering the support to the crotch area of the pants.

A preferred support consists of a flexible outer shell that can contain an absorbent structure within it.

As used herein, the expression "ethylene-containing polymer foam" refers to polyethylene homopolymers and ethylene-containing copolymers, preferably copolymers containing a major amount of ethylene (CI amount). For optimal properties of the foam support.

The polymer is preferably crosslinked, for example by electron beam irradiation; preferred comonomers include vinyl acetate, acrylic acid and methacrylic acid and their esters, such as ethylene acrylate. Blends of such polymers can also be used.

Many attempts have been made to provide absorbent products such as disposable diapers, sanitary napkins and incontinence pads that are used to absorb and contain body fluids.

Many of these products.

It contains an absorbent batt disposed between a liquid-impermeable support and a liquid-permeable backing. In the infant diaper and adult incontinence product markets, products with large storage areas 4) are required. In this regard, co-pending U.S. Patent Application Serial Nos. 535.193 and 626.167 disclose disposable pads. The pad consists of a liquid-impervious, substantially flexible outer shell, preferably thermoformed from an ethylene-containing polymer foam. The outer shell is generally boat-shaped and about 0.0397 cm (1/64 in.) to about 0.63 in.
It has a thickness in the range of 5 cm (L/4 inch). The outer shell measures approximately 10.16 cm (4 inches) to approximately 30.46 cm (1 inch).
2 inches) range, approximately 5.08 cm (2 inches)
~ 1 that crosses the upper space of approximately 17°78cm (Twift)
Widths measured from one rim to the other, and from approximately 0°3175 cm (0,125 inches) to approximately 6.35 cm (6.35 cm).
It has a depth measured from a straight line extending across the width of the upper shell rim at the center portion (2.5 inches). Means are provided for adhesive lines to be applied to the underside of the shell to secure the pad to the user's clothing. The adhesive line is covered with a strip of adhesive; when this strip is removed from the adhesive line, the tacky adhesive is revealed.

Polyethylene film is a well-known release surface for pressure sensitive adhesives, and it is thus clear that very strong adhesives are required to provide strong adhesion levels to polyethylene films. Obtaining strong adhesion levels to polyethylene-containing foams is even more difficult. Transfer coating of silicone liners E to polyethylene films with support-free pressure sensitive adhesives is common practice. When it was proposed to perform a similar procedure for transfer coating a support-free pressure sensitive adhesive onto polyethylene-containing foams, the resulting adhesive bond was a complete failure.

It must also be borne in mind that adhesives in hot melt form cannot be applied to foams in view of the fact that the foams are extremely heat sensitive, and therefore do not have the desired pressure sensitivity. Adhesives must be applied at room temperature, and the use of solvents for adhesive application is not practicable because large ovens are required to remove the solvent, and the fixation of pressure-sensitive adhesives Many attempts have been made to improve the properties of the material by corona or flame treatments, as well as by using various primers to increase bonding, but none of these approaches are completely adequate. There wasn't.

Surprisingly, the adhesive with the same formulation as above was
% non-recovera elongation
It has been discovered that the adhesive performs well on foam supports.

In accordance with a preferred embodiment of the present invention, a thermoplastic rubber adhesive formulated with a highly solid adhesive resin provides the desired bond to an ethylene-containing polymeric foam surface even without corona, flame or primer treatment. Form. The adhesive has a width of 1339 g/cm (120
ounces per inch width) to steel.

In the past, in order to fix the polyethylene film support t-1 to the user's clothing, [both sides (d).

Attempts have been made to utilize pressure sensitive adhesive tapes. Such double-sided tapes have an adhesive coating applied to each surface. It consists of a thin film-like support. When "standard" double-sided tapes are utilized to adhere ethylene-containing polymeric foams to substrates, such tapes are unable to perform their intended function satisfactorily; upon removal of the release strip, they bond to the foam substrate. This problem of having the effect of peeling or completely pulling the adhesive from the foam and not peeling cleanly is overcome by the present invention. Of course, the level of adhesion of the double-sided tape that is attached to the underwear should desirably be lower than the level of adhesion of the side of the double-sided tape that is attached to the ethylene-containing polymer foam support; or, if the adhesive formulation is the same on both sides of the double-sided tape, by reducing the adhesion level on one side compared to the opposite side of the tape. This can be accomplished by covering a portion of the adhesive with a strip of non-adhesive material or by omitting a portion of the adhesive on the side.

No. 3,643,662 to McGuire et al. (as well as related U.S. Pat.
．． No. 575,175) was held securely, albeit temporarily, to the inner crotch area of the pants by a narrow double-sided pressure-sensitive adhesive attached to the lower surface of the liner. Describes a removable protective liner for pants.

The adhesive tape has a differential adhesion level, thus the adhesive layer that protects the tape and secures it to the inner trousers will: - Temporarily but securely attach the tape and liner to the inner crotch area of the pants. It has a greater adhesion level than the adhesive liner of the adhering tape. Although Mc(z+, +1re) et al. disclose the fact that the liner can be a polyethylene film, there is no disclosure of a support consisting of a foam of an ethylene-containing polymer, thus forming a double-sided tape. The teaching of the need to provide a sufficiently high level of adhesion so that it can be securely attached to a support is given by McGuire.
Thus, according to the present invention, the adhesive layer attached to the foam support is
The tape attached to the liner must have an adhesion strength to steel of greater than 339 g/cm [(120 oz/in It@), whereas according to the U.S. patent to McGuire et al. The maximum adhesion of the surface adhesive layer is 1250 g/cm (112 oz/in width), McGuire
disclose supports that fall within the scope of the present invention; nevertheless, McGuire et al.
Since adhesion to polyethylene films as shown in the US patent to re) et al. is much more difficult than adhesion to ethylene-containing polymer foams according to the present invention.

There is no awareness of its criticality.

The present invention relates to a support of liquid-impermeable ethylene-containing polymeric foam for absorbent articles that can be removably attached to trousers, said support having a top surface and a bottom surface, the support being capable of being attached temporarily to the crotch region of the trousers. adhesive attachment means for firmly adhering said support are located on the bottom surface of said support, said attachment means comprising a double-sided pressure sensitive adhesive tape, said tape permanently attached to said support. having a first side adhered to the tape and an opposite second side adapted to be temporarily attached to the pants, the first side of the tape having a 120 oz.
the second side of the tape has an adhesion strength to steel greater than 837 g/cm (75 oz/in width), and the tape has a strength of 100%
Reinforced with an internal matrix that has a non-recoverable elongation less than the

In accordance with a preferred embodiment of the invention, the support is aged in the form of a substantially flexible shell having a depth of at least about 1/8 inch, the shell being The outer shell may contain an absorbent structure therein, and the adhesive attachment means is located on the outer bottom surface of the outer shell. The outer shell is formed from a moldable material that is liquid impermeable. For example, the outer shell can be a polyethylene foam shell formed from a sheet of polyethylene foam and subsequently formed by a thermal process. can. The outer shell is generally boat-shaped and about 0.039
7cm (1/64 inch) ~ approx. 0.635cm (1/64 inch)
4 inches) thick. The outer shell is approximately 10.16cm (
Lengths range from 4 inches to 12 inches; 2 inches to 17.78 cm
Width measured from one rim to the other across the headspace of the
The rim has a depth measured from a straight line extending across the width of the upper shell rim at the center portion of about 2.5 inches. The outer shell can have an absorbent structure disposed therein. The absorbent structure is at least slightly compressible, and even when wet,
A liquid void volume can be maintained.

The L-section structure can be constructed from a web of fibers, foam, interdigitated elastic ms or mixtures thereof. The absorbent medium can consist of superabsorbent materials, woody fibers loosely compressed or formed into nonwoven webs, cotton batting, tissue, peat moss, mixtures thereof, and the like.

The second side of the adhesive tape is usually covered with a release strip; when the absorbent product is ready for use, the release strip can be peeled off to remove the adhesive on the second side of the tape, which is still tacky. condition so that it can be applied to underwear.

When the adhesive formulation is common to both the first and second sides of the tape, it is necessary that the first side of the tape has a larger surface area of adhesive than the second side. In this way, the adhesion to the foam support will be much greater than the adhesion to the undergarment; the surface area of the 'Ifc adhesive layer on the second side of the tape is covered by a strip of non-adhesive material. This can be reduced by covering a portion of the second surface. Alternatively, the portion of the support to which the second side of the adhesive is applied can be left bare (eg, leaving a central bare strip in the center of the tape).

When the support comprises a shell of ethylene-containing polymer foam, said shell is preferably about 0.0397 cm (1/6
4 inches) to about 0.635 cm (1/4 inch). The depth of the shell, measured from a straight line extending across the width at the rim of the upper shell at the central portion, is preferably from about 1/8 inch to about 6.35 inches.
cm (2-1/2 inches).

The adhesive used in the double-sided tape of the invention is preferably based on an ABA block copolymer. U.S. Patent No. 4.136.071 and gg3.6
Adhesives such as those shown in No. 76.202 use certain A-B block copolymers with certain A-B-A block copolymers and a high proportion of solid sticky resins. hand.

They can be made highly tacky by mixing.

The same desired adhesive is Kraton 11
17 [This is the Shell Chemical War Kamba=-(She
ll Chemical C.

thermoplastic elastic A-B sold by
-A block copolymer] by using a styrene-isoprene-styrene polymer polymerized to the correct A-B block, A-B-A block ratio. A-B-A block copolymers can be made tacky by incorporating high proportions of various solid resins such as hydrocarbons, polyterpenes or rosin esters (more than parts tool per 100 parts by weight of elastomer). The formulation in question can be coated by hot melt, calender or solvent methods onto the support.
The face and the second face are preferably coated with an adhesive layer consisting of a thermoplastic elastic component and a resin component, the thermoplastic elastic component comprising about 10 to 75 parts of a simple A-B block copolymer (where the A block is styrene or styrene congeners and the B block is derived from isoprene), and an A-B-A block copolymer of about 90 to 25 RB, where A and B are as defined in I-. The A block in the A-B block copolymer is about 10 to
and the sum of the A-B block copolymer and the A-B-A block copolymer is about 30%.
Contains not more than styrene. Preferably, the formulation is about 100 to 175 parts (more preferably about 120 to 140 parts) when it is applied to the first side of the double-sided adhesive tape.
parts) of solid adhesive, all of which are parts per 100 parts of thermoplastic elastic component. When coating the formulation onto the second side of the double-sided adhesive tape, the resin component preferably comprises about 60-120 parts of solid adhesive.

Contact! , for both the first side and the second side of the tape, the adhesive layer is made of a thermoplastic elastic component;
The composition consists of about 25 to 45 parts of A-B-A pro,·, tacopolymer and about 75 to 55 parts of A-B-A pro,·, tacopolymer.

The adhesive on the first side of the adhesive tape consists of about 120 to 140,000 parts by weight (most preferably about 120 parts by weight) of a solid adhesive resin per 100 parts by weight of the thermal I+7 plasticity component. .

It should be noted that when the support consists of the outer shell of the foam, the reinforcing inner substrate of the adhesive attachment means provides additional stability to the entire foam structure, and the adhesive on the second side of the adhesive tape Thermoplastic elastic component 1
It contains about 85 to 95 parts by weight (most preferably about 90 parts by weight) of solid adhesive resin per 00 parts by weight.

Elastic block copolymers utilized in the present invention are disclosed in U.S. Pat. Nos. 3,239,478 and 2.376.
It is detailed in No. 202.

The central reinforcing substrate utilized in the double-sided adhesive tape of the present invention preferably consists of a plastic film, non-woven fabric, woven fabric or paper.

According to one embodiment of the invention, the adhesive on both the first and second sides of the adhesive tape consists of a common formulation, and the reinforcing support consists of a scrim or lambda, and the adhesive tape on the second side of the tape than on the first side of the tape.
Located close to the surface. The presence of the adhesive in close proximity to the second surface of the tape reduces the level of adhesion on the second side and thus acts to differentiate the level of adhesion between the first and second sides. .

In case the central reinforcing substrate consists of an impermeable film, the adhesive layers on the first and second sides of the tape must necessarily be of different formulations (the adhesive layers on the second side of the tape 1. unless the surface area of the adhesive is reduced by covering said surface with a strip of non-adhesive material or by reducing the surface area of the adhesive on the second surface.

While any ethylene-containing polymeric foam material may be utilized in making the foam shell of the present invention, the preferred material is nevertheless an ethylene/vinyl acetate copolymer.

Methods for making ethylene-containing polymer foams suitable for the supports of the present invention are described in U.S. Pat. No. 4,213,925;
It is disclosed in 4,203,815, 3,959,189 and 4,252,906.

FIG. 1 is a perspective view of the bottom of a support of liquid-impermeable ethylene-containing polymer foam for an absorbent article (in this case a pad), which comprises a thermoformed outer shell 11 in the form of a boat. Become. Outer shell 11 may contain an absorbent structure (not shown). The bottom outer surface of shell 11 is indicated at 13. FIG. 2 is a perspective view of the top of the shell 11, the interior portion of which is designated at 12.

As can be seen from FIG. 1, on the lower surface of the outer shell 11 there are longitudinally extending narrow attachment means 15.

Adhesive attachment means 15 is a double-sided adhesive tape that extends along a major portion of the length of outer 611. Line 3-3 in Figure 1
As can be seen from FIG. 3, which is a cross-sectional view through FIG.
22 and a thin film-like substrate 21 having a second adhesive coating 20 on its other surface. The base body 21 is 10
It can be made of a material with a non-recoverable elongation of less than 0%. Thus, the substrate is a plastic film,
It can be made of non-woven fabric, woven fabric or paper. However, the preferred support is 1 mil polyester plastic film.

Adhesive liquid v22 has the following formulation (A): Kraton (
Kraton) 1117 100 parts (shell oil-
(Kraton 1117 is believed to consist of approximately 35 parts A-B and 65 parts A-B-A) Wingtack 95 120 parts (Win
gLack 95 is a solid adhesive resin primarily comprised of a polymerized structure derived from piperylene and isoprene from Goodyear Tire & Rubber Φ Company. It has a softening point of about 95°C. ) Butyl Z imate 2 parts (Z-n
Zinc Butyldithiocarbamate, a trademark of an antioxidant) Santovar A 1 part (2,5-di-tart-7 mil hydroquinone, a trademark of an antioxidant).

Adhesive formulation 20 is identical to adhesive formulation 22, as shown in FIG. However, to reduce the adhesion level on the second side 20 of the adhesive tape 15, a non-adhesive strip 23 of polyester is added to the layer 20. Place it on Jl.

The adhesive cover 1 pattern 22 has a wide tape support 21 attached to the outer shell 1.
1, and the adhesive coating 20 is another pressure sensitive adhesive coated on the outer surface of the support 21, and 'Afl! Strip 24 (shown partially broken off at the end in FIG. 1)
protected by.

The release strip can be any suitable film-like material that does not adhere too strongly to the adhesive coating 20 and is coated on one side with silicone to facilitate removal of the paper strip 24 from the outer adhesive layer 20. Releaseable semi-bleached kraft paper is particularly suitable. When attempting to secure the outer shell 11 to the waistband of the pants, the release strip 24 can be grasped with the fingers and easily lifted and peeled off from the surface of the adhesive layer 20.

At the same time as attaching the tape 15 to the outer shell II of the foam in a boss-like manner, in order to attach the tape 15 temporarily but firmly to the various fabrics constituting the pants, the adhesive layer 22 and the adhesive layer 20 are disposed differently. A differential adhesion level is obtained when both sides of the double-sided pressure sensitive adhesive tape 15 have a differential adhesion level when they are in contact with the same surface of the material. Adhesion level is defined as the force required to strip or peel a double-sided pressure sensitive adhesive tape secured to a stainless steel plate by one of its sides, and is quantified as ounces/inch width of tape. The differential #22 required by the double-sided pressure sensitive adhesive tape 15 used in accordance with the present invention is such that the adhesive #22 is 1339 g/cm wide (120 oz/inch wide), preferably 1563 g/cm wide. (1
40 oz/cm wide), and the adhesive layer 20 has an adhesion level, as defined above, greater than 837 g/cm wide (837 g/cm wide).
75 oz/inch width) [preferably 1t16g/cm
(100 oz/inch width)].

The ratio between the high adhesion level of adhesive layer 22 and the low adhesion level of adhesive layer 20 in a given double-sided pressure sensitive FTC adhesive tape 15 is preferably about 1.4+1.

A liquid-impermeable substantially flexible outer shell 11.

Formed from a moldable ethylene-containing polymer foam. The substrate, when shaped T:&, has a thickness of approximately 0.0397
cm (1/84 inch) to approx. 0.835 cm (1,/
4 inches) provides a liquid-impermeable, substantially flexible outer shell. When the shell is deformed, it substantially returns to its original shape. The polyethylene-containing foam shell is manufactured by known thermoforming techniques. A preferred formulation for forming the ethylene-containing polymeric foam material 1 is Polara (
It is designated as Type E, which is a crosslinked ethylene/vinyl acetate copolymer form. Also, /J! A material designated as Volara type A, which is a cross-linked polyethylene foam, is suitable for the present invention. These products are manufactured by Voltek, Inc.
It has a V-shape and a stylus tip by Massachusetts). Preferably, the formulation has a thickness of approximately 0.312
It is manufactured in the form of a sheet of section m (178 inches). This sheet is molded at a temperature of about 127° C. (below 260° C.) to form a foam shell. The outer shell is boat-like in shape, but is not limited thereto.

Another formulation (B) useful for adhesive layer 22 is: 50 parts of Kraton 1107 (approximately 15
natural rubber 50 parts Piccolyte Si20 130 parts (betapinene adhesive resin, melting point 115°C) Butyl Z imate 2 parts If the layers 2z and 20 of the Santovar A 1-part double-sided tape are separated by an impermeable support 21, a suitable formulation (C) for the adhesive layer 20 for adhesion to underwear is They are: Kraton 1107 100 parts Wing tack 95 90 parts Butyl Zimate 2 parts Sant.

var) A Part 1 The preparation of a foam support according to the invention is illustrated by the following example. It is clear that these examples do not limit the scope of the invention in any way, and that modifications may be made without departing from the spirit and scope of the invention.

A soft flexible shell is formed by aging a sheet of ethylene/vinyl acetate copolymer foam. This outer shell is 20.32 cm (8 inches) long, 1
It has a width at its widest point of 1,11 cm (4-3/8 inches) and a width at its center portion at its narrowest point of 9.53 cm (3-374 inches). The shell has a depth of 7/8 inch at the center from a straight line extending across the center from the edge of each rim thereof.

Formulation A was applied to both sides of 0.0254 mm (1 mil) polyester tape at 33.90 g/m' (33.90 g/m') on each side.
Double-sided adhesive tapes were prepared by coating with a coating weight of adhesive of 1 oz/square yard). A narrow width strip of non-adhesive polyester cheese was then placed on one side of the double-sided tape to reduce the level of adhesion on said one side.The four-sided tape was 2.22 cm (778 inches) wide. , and a 0.635 cm (1/4 inch) strip of non-adhesive polyester cheese placed longitudinally along the length of the one side of the tape to form two separate strips on each side of the polyester tape. form an adhesive strip.

The opposite side of the double-sided tape is then applied lengthwise to the outer bottom surface of the foam shell. The side of the double-sided tape that adheres to the outer shell of the foam weighs 1563 g/am (140 oz/
The other side of the double-sided adhesive tape has an adhesion level of
cm width (100 oz/inch width) adhesion level. The resulting foam support was found to be suitable for its intended purpose. That is, no peeling of the foam occurs when removing the release tape or when removing the support from the undergarment after use.

[Brief explanation of drawings]

1IUA is a perspective view of a polyethylene-containing shell of one embodiment of the present invention. FIG. 2 is a perspective view of the arm portion of the outer shell shown in FIG. 1. FIG. 3 is a cross-sectional view taken through line 3--3 of FIG. In the figure, 11... Outer shell, 15... Adhesive attachment means,
20... Second adhesive coating, 21... Substrate, 22...
・First adhesive film. Patent applicant: Personal Products Company Kanno-ni

Claims (1)

Claims: 1. A support of liquid-impermeable ethylene-containing polymeric foam for absorbent articles that can be removably attached to pants, said support having an upper surface and a lower surface, Adhesive attachment means for temporarily but firmly adhering said support to the crotch portion of said support are located on the bottom surface of said support, said attachment means comprising a double-sided pressure sensitive adhesive tape, said tape having a first side permanently adhered to a support and an opposite second side adapted to be temporarily attached to pants, the first side of the tape having a width of 120 oz. inch width)
, the second side of the tape has an adhesion to steel greater than 75 oz/in width, and the tape has a non-containing strength of less than 100%. 1. A support of liquid-impermeable ethylene-containing polymer foam, characterized in that it is reinforced with an internal matrix having a recoverable elongation rate. 2. A support of liquid-impermeable ethylene-containing polymeric foam for an absorbent product that can be removably attached to pants, said support having an upper surface and a lower surface, said support temporarily attaching to the crotch area of the pants. adhesive attachment means for firmly adhering said support are located on the bottom surface of said support, said attachment means comprising a double-sided pressure sensitive adhesive tape, said tape permanently attached to said support. having an adhered first side and an opposite second side adapted to be temporarily attached to pants, the first side of the tape being 120 oz/in wide;
, the second side of the tape has an adhesion to steel greater than 75 oz/in width, and the tape has a non-containing strength of less than 100%. The support is reinforced with an internal substrate having a recoverable elongation rate, the support being at least about 0.312 cm (1/8
inch) in the form of a substantially flexible outer shell having an inner inner surface and an outer bottom surface, the outer shell having an absorbent structure therein. A support of liquid-impermeable ethylene-containing polymeric foam, characterized in that the adhesive attachment means are located on the outer bottom surface of the outer shell. 3. The support of claim 1, wherein the adhesive layer on the second side of the tape is protected by a removable release strip when the adhesive layer is not in use. 4. The support according to claim 1, wherein the adhesive layer on the first side of the tape has a larger surface area than the adhesive layer on the second side of the tape. 5. The outer shell is approximately 0.0397 cm (1/64 inch)
3. The support of claim 2, wherein the support is an ethylene-containing polymeric foam shell having a thickness of 1/4 inch. 6. The outside is approximately 0.312 cm (0.125 inch)
3. The support of claim 2 having a depth of about 3.81 cm (1.2 inches). 7. The support according to claim 2, wherein the outer shell has a boat-like shape. 8. An adhesive layer on at least the first surface of the tape,
A support according to claim 1, comprising a thermoplastic rubber adhesive containing a high proportion of solid adhesive resin. 9. The adhesive layer on the first side of the tape comprises a thermoplastic elastic component and a resin component, the thermoplastic elastic component being about 10 to 75 parts of a simple A-B block copolymer (wherein the A block is a from styrene or a styrene homolog, and the B block is derived from isoprene), and about 90 to 25 parts of an A-B-A block copolymer, where A and B are as defined above. consisting essentially of A in the A-B block copolymer
The blocks constitute about 10-35% by weight of the A-B block copolymer, and the sum of the A-B block copolymer and the A-B-A block copolymer contains no more than about 30% styrene, and the resin component comprises about 100-175
9. A support according to claim 8, consisting essentially of parts of solid adhesive, all of said parts being parts per 100 parts by weight of thermoplastic elastic component. 10. The adhesive layer on the first side of the tape contains about 25 to 45 parts of A per 100 parts by weight of thermoplastic elastic component.
-B block copolymer and about 75 to 55 parts of A-B
-A support according to claim 9, comprising a block copolymer. 11. The support according to claim 10, wherein the adhesive layer on the first side of the tape comprises about 120 to 140 parts by weight of solid adhesive resin per 100 parts by weight of the thermoplastic elastic component. . 12. The adhesive layer on the second side of the tape comprises a thermoplastic elastic component and a resin component, the thermoplastic elastic component comprising about 10 to 75 parts of a simple A-B block copolymer (
where the A block is derived from styrene or a styrene homologue and the B block is derived from isoprene), and about 90 to 25 parts of linear or radial A
- consists essentially of a B-A block copolymer, where A and B are as defined above, wherein the A block in the A-B block copolymer is about 10-35% by weight of the A-B block copolymer. and the total of the A-B block copolymer and the A-B-A block copolymer contains not more than about 30% styrene, and the resin component consists essentially of about 60 to 120 parts of a solid adhesive. 9. The support of claim 8, wherein all of said parts are parts per 100 parts by weight of thermoplastic elastic component. 13. The adhesive layer on the second side of the tape contains about 25 to 45 parts of A per 100 parts by weight of thermoplastic elastic component.
-B block copolymer and about 75 to 55 parts of A-B
Claim 12 consisting of -A block copolymer
Support described in Section. 14. The support according to claim 13, wherein the adhesive layer on the second side of the tape comprises about 85 to 85 parts by weight of a solid adhesive resin per 100 parts by weight of the thermoplastic elastic component. . 15. The support according to claim 1, wherein the reinforcing substrate is made of a plastic film, nonwoven fabric, woven fabric, or paper. 16. The reinforcing base is made of a scrim or a net,
they are located closer to the second side of the tape than to the first side of the tape, and the adhesive on both the first and second sides of the tape is from a common formulation. A support according to claim 1 consisting of: 17. Claim 1, wherein the adhesive layer on the first side and the adhesive layer on the second side of the tape are of different formulations and are separated from each other by an impermeable substrate film. Support as described. 18. The support of claim 1, wherein the foam support is made from a crosslinked ethylene/vinyl acetate copolymer.