JP2019024446A - Pad for nipple mouth of domestic animal, and pad assembly for nipple mouth of domestic animal - Google Patents

Abstract

To provide a patch, a pad or a sheet for a nipple mouth of a domestic animal excellent in adhesion to a nipple, hardly peelable in use, capable of preventing accurately invasion of bacteria into the nipple mouth, and difficult to break and peelable.SOLUTION: A pad for a nipple mouth stuck onto a part including the nipple mouth of a domestic animal has a laminate 2 of an elastic sheet 3 and an adhesive layer 4, and a modulus of elongation of the laminate 2 is 0.05 MPa or more and below 1 MPa, and further adhesive force in a 25 mm width of the laminate 2 is 5 N/25 mm or more. The adhesive layer 4 is laminated on one surface of the elastic sheet 3. The pad for a nipple mouth has proper flexibility and is difficult to break.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a nipple mouthpiece for protecting the nipple mouth of domestic animals such as dairy cows. More specifically, the present invention relates to a domestic nipple mouthpiece that is attached to a domestic nipple so as to cover the nipple mouth and protects the nipple mouth. The present invention also relates to a livestock nipple mouthpiece assembly comprising a livestock nipple mouthpiece. The pad is sometimes called a patch, a pad, a sheet, a seal, or the like.

  Mastitis is one of the serious diseases that affect domestic cows. Mastitis is an infectious disease caused by bacteria and other microorganisms that enter the inside of the breast through the mouth of the teat, settle on the inner wall of the breast, and then grow inside the breast. This mastitis has not yet been eradicated due to the complicated causes of its occurrence.

  If livestock suffers from mastitis (such), the amount of milk obtained from the livestock may be reduced, or the quality of milk obtained from the livestock may be reduced. In addition, when treatment with drugs such as antibiotics is performed to cure mastitis, there is a problem that the drug may remain inside the breast, so that milk cannot be shipped during the treatment period. In addition, if the symptoms of mastitis are severe and difficult to treat, the diseased livestock must be thinned. From the above, livestock suffering from mastitis is a huge economic loss for dairymen.

  Currently, for the purpose of preventing mastitis, a method in which a teat is immersed in a dipping agent (ie, an aqueous disinfectant solution) before and after milking is generally used in a lactation period, which is a milking period. It has been. The purpose of this method is to disinfect the nipple portion by sterilizing mastitis-causing bacteria (that is, bacteria that cause mastitis) adhering to the skin surface of the nipple portion. In addition, a method of reducing the adhesion area of mastitis-causing bacteria by adding a component that improves the skin condition, such as a moisturizing component, to the dipping agent is also used.

  As described above, various dipping agents whose main purpose is sterilization have been proposed (for example, Patent Document 1 and Patent Document 2). Moreover, many dipping agents are marketed as products in the market.

  Next, during the dry period, when milking is not performed, antibiotics are injected into the breast from the mouth of the teat at the beginning of the dry period, thereby causing the mastitis-causing bacteria to enter the breast. The method of killing is generally used. Antibiotics are considered effective in preventing mastitis because antibiotics have a certain bactericidal effect early in the dry period.

  However, when using antibiotics, there are problems such as leakage of antibiotics from the mouth of the nipple, problems of antibiotics entering raw milk when the milking period starts after the dry period is over, and antibiotics When used for a long time, there is a problem that bacteria resistant to the antibiotic appear in the breast. It has also been reported that the rate of new livestock mastitis increases in the early dry period and in the late dry period before delivery. From the above, it is difficult to say that mastitis countermeasures using antibiotics are sufficient countermeasures.

  Therefore, as a means for protecting the nipple of livestock from mastitis-causing bacteria, a technique for preventing bacteria and other microorganisms from entering the nipple from the mouth of the nipple by protecting the entire nipple of the livestock has been proposed.

  For example, Patent Document 3 states that “in the dry season of dairy cows, which are livestock, during the first about 2 to 9 days of the dry season that is susceptible to mastitis, and about 2 to 9 days before delivery. For a certain degree, a means has been proposed in which the nipple is immersed in a nipple sealant to keep a thin film that closes the nipple opening formed in the nipple. By this means, it is stated that dairy cows can be prevented from suffering from mastitis by physically blocking the infection of mastitis-causing bacteria.

  Patent Document 3 exemplifies rubber materials such as urethane rubber, latex rubber, butadiene resin, polyvinyl alcohol, liquid rubber, natural rubber, butyl rubber, nitrile rubber, chloroprene rubber, and vinyl acetate rubber as film forming components in the teat sealant. Has been. That is, these rubber materials are dissolved in a solvent such as toluene and xylene to form a solution, and a film of rubber material is formed on the nipple by immersing the nipple in this solution (ie, nipple sealant). is there.

  However, the film of the rubber material formed by the above-described method has a problem that the adhesiveness with the nipple is insufficient, and therefore it is easily peeled off from the nipple. That is, the film of rubber material proposed in Patent Document 3 maintains the papillary mouth occlusion in the period of about 2 days to about 9 days, which is a period in which it is necessary to prevent infection of mastitis-causing bacteria. There are many cases where this is not possible, and improvements are required.

  Next, Patent Document 4 proposes a nipple protecting material for livestock made of a flexible film that is waterproof and has a high elongation rate at the time of cutting. The nipple protection material is wrapped around the nipple and fixed.

  However, the nipple usually has a shape that becomes thinner as it approaches the nipple mouth at the tip. For this reason, when the flexible film as described above is wound around the nipple, there are many cases where sufficient adhesion cannot be secured at the nipple mouth portion which is the attention portion. Therefore, there exists a problem that a space | gap tends to arise between a nipple mouth and a film. When such a space is formed, the function of protecting the nipple opening with a film is deteriorated. Moreover, there is a possibility that causative bacteria such as bacteria may enter from this gap. Furthermore, the presence of this void portion may cause the film to easily peel off from the teat.

  Further, according to the study by the present inventors, in addition to the above problems, it has been found that there are the following problems when a simple flexible film is applied to the nipple. That is, the flexible film is easily peeled off from the nipple due to the presence of the gap portion. In addition, when the flexible film is not sufficiently adhered to the nipple, it has been found that long-term reliable application is difficult due to the stratum corneum generated on the nipple, even if it is applied immediately after application. .

Japanese Patent No. 3404704 JP 11-155404 A JP 2000-041529 A JP 2006-129795 A

  The present invention has been made in view of the above-described prior art, and in the milking period, it is likely to be infected by bacteria or the like for about half a day (for example, early milk drying and dry milk before delivery). In the latter period, an object is to provide a papillary mouthpiece that protects the nipple mouth without peeling off and sticking to the nipple so as to cover the nipple mouth for about one week.

  In addition, the present invention provides a teat that protects the teat mouth without coming off and adhering to the teat for 10 days or more, preferably about 2 weeks, in order to reliably prevent infection during the dry period, regardless of individual differences in livestock. Another purpose is to provide a mouthpiece.

  In addition, an object of the present invention is to provide a nipple mouthpiece that can be attached to the nipple with good operability.

  A livestock nipple mouthpiece according to the present invention is a livestock nipple mouthpiece attached to a part including a nipple mouth of a livestock, and an adhesive sheet laminated on one surface of the elastic sheet The tensile elastic modulus of the laminate is 0.05 MPa or more and less than 1 MPa, and the 25 mm wide adhesive strength of the laminate is 5 N / 25 mm or more.

  In general, there is a tensile elastic modulus as an index representing the characteristics of a substance. The tensile elastic modulus is sometimes called an elastic modulus or Young's modulus. The tensile elastic modulus is a physical property value indicating the ease of deformation or the difficulty of deformation of a substance. In the present invention, the tensile modulus was measured in accordance with, for example, JIS K7127; 1999, with a chuck distance of 20 mm, a tensile speed of 50 mm / min, and a sample width (laminate width) of 20 mm. In the following examples and comparative examples, measurement was performed using a tensile tester (model number; EZ Test / EZ-SX) manufactured by Shimadzu Corporation.

  Moreover, generally the adhesive material like an adhesive tape can express the characteristic with adhesive force (namely, peeling force), tackiness (namely, adhesiveness), and holding power. Adhesion is considered a permanent adhesion guide. Tackiness is considered a guideline for instantaneous adhesion. Holding force is considered to be the force with which the adhesive material tries to stay in place. The measuring method of adhesive force, tackiness, and holding power is defined by the standard of JIS Z 0237, for example. The roller used in the test was a 2 kg manual pressure bonding measure. The pressure bonding was performed by reciprocating the roller twice, and various measurements were performed 20 minutes after pressure bonding.

  The adhesive strength can be measured by, for example, a peel adhesive strength test method. The peel adhesion test method is a method for measuring the force required to peel off the sample in the direction of an angle of 180 ° after the sample is attached to a test plate. In the present invention, it is defined as the force when peeling a sample having a width of 25 mm.

  According to the nipple mouthpiece for livestock according to the present invention, the laminate is attached to the nipple so as to cover the nipple mouth of the livestock. For this reason, it is not necessary to perform a troublesome treatment such as immersing the nipple of a livestock in a film-forming solution and drying it, and the work for preventing a disease such as mastitis on the livestock is very simple.

  Moreover, the laminated body of this invention is affixed on a nipple so that a nipple mouth may be covered, and it is not wound around a nipple and fixed. For this reason, sufficient adhesiveness is ensured between the nipple mouth which is the front-end | tip part of a nipple, and a laminated body. As a result, it is difficult to form a gap between the nipple mouth and the laminate, and the nipple mouth can be reliably protected from infection with bacteria and the like.

  Moreover, in this invention, since the tensile elasticity modulus of a laminated body is 0.05 MPa or more and less than 1 MPa and the adhesive force of a laminated body is 5 N / 25mm or more, the adhesiveness with respect to the nipple of the laminated body affixed on the nipple Is excellent. Moreover, the laminated body of this invention can be expanded-contracted so that it may follow the deformation | transformation of the teat accompanying operation | movement of livestock by exhibiting moderate elasticity. Furthermore, it is possible to follow the change in the teat size during the dry period and the uneven shape of the teat. For this reason, since the laminated body affixed on the nipple closely_contact | adheres to a nipple, it is very hard to peel off. For this reason, the mouth of the nipple can be reliably protected for a certain period of time, which is said to be easily infected by bacteria or the like.

  In the second aspect of the livestock nipple mouthpiece according to the present invention, the pressure-sensitive adhesive layer has a ball tack number of 3 or more. In the present invention, it conforms to the tack measurement method employed in JIS Z 0237. Although the inclination angle defined in JSI Z 0237 is 20 °, 30 °, or 40 °, in the present invention, the inclination angle is 15 ° for the purpose of evaluating the tack property with higher accuracy. did. That is, at least one of 32 types of steel balls with a diameter of 15 ° to 1 inch is rolled on an inclined plate with an inclination angle of 15 °, and the ball number of the maximum diameter stopped on the adhesive surface is specified as a value indicating tackiness. To do. This value is the ball tack number in the embodiment of the present invention.

In the 3rd invention aspect of the domestic animal nipple mouthpiece which concerns on this invention, the retention strength in 40 degreeC of the said adhesive layer is 0 mm or more and 10 mm or less.
The holding force for the adhesive material indicates the force with which the adhesive material tries to stay in a certain place. In other words, the holding force can be expressed as a resistance force against a load. For example, the holding force is measured as follows. That is, a test plate having a prescribed shape is prepared in JIS Z0237. One end of the test piece is attached to one end of the test plate by pressing (pressing the 2 kg roller back and forth twice). After this crimping, they are left at 23 ° C. for 20 minutes. Thereafter, a weight of a predetermined weight is suspended from the lower end of the test piece at a predetermined temperature (40 ° C. in the present invention). Then, the time when the weight falls or the distance of the deviation when the specimen is displaced is measured.

  According to the aspect of the present invention, since the holding force of the pressure-sensitive adhesive layer is set to 0 mm or more and 10 mm or less, it is possible to prevent the deviation of the laminated body from the nipple over a long period of time. Specifically, when the holding force is greater than 10 mm, there is a tendency that misalignment is likely to occur when the laminate is affixed to the nipple over a long period of time.

  In the fourth aspect of the livestock nipple mouthpiece according to the present invention, a surface of the laminate opposite to the surface on which the pressure-sensitive adhesive layer is laminated is placed at 23 ° C. using a 2 kg roller. After the superposition, the strength when peeling the superposed laminate (hereinafter sometimes simply referred to as “back surface peel strength”) is 5 N / 25 mm or more and 30 N / 25 mm or less. In this test as well, the 2 kg roller was reciprocated twice for pressure bonding. Moreover, what was left to stand at 23 degreeC for 20 minutes after pressure bonding was measured.

According to this aspect of the present invention, the surfaces opposite to the pressure-sensitive adhesive layer in the laminate are bonded to each other under an appropriate bonding strength. Thereby, the float with respect to the nipple of the laminated body affixed on the nipple decreases, the laminated body becomes difficult to peel off from the nipple, and bacteria hardly enter between the nipple and the laminated body.
If the peel strength between the surfaces opposite to the surface on which the adhesive is laminated in the laminate is less than 5 N / 25 mm, the laminate attached to the nipple tends to float more frequently. On the other hand, if the back surface peel strength is larger than 30 N / 25 mm, the back surface itself tends to adhere to other objects, and the operability of the laminate tends to be lowered.

  Next, the papillary mouthpiece assembly for livestock according to the present invention is a peelable mouthpiece for each aspect of the invention described above and the peelability laminated on the surface of the laminate opposite to the pressure-sensitive adhesive layer. Protective film and a release sheet attached to the surface of the pressure-sensitive adhesive layer.

  This nipple mouthpiece assembly defines the configuration of the nipple mouthpiece in a state before being applied as a laminate to the nipple of livestock. This nipple mouthpiece assembly is a configuration of a nipple mouthpiece in a state of distribution in the market. In actual use, carry the papillary mouthpiece assembly to the target livestock, first peel off the release sheet from the adhesive layer, and apply the exposed adhesive layer to the livestock nipple. Thereafter, the protective film is peeled off from the laminate. Thereby, the laminated body as a nipple mouthpiece can be stuck on a nipple.

In the second invention aspect of the livestock nipple mouthpiece assembly according to the present invention, the release sheet is peeled from the laminate with respect to the peel strength when the protective film is peeled from the laminate. The peel strength at that time is 0.1 to 0.9 times.
In this nipple mouthpiece assembly, the protective film is adhered to the laminate more strongly than the release sheet. Therefore, firstly, the release sheet is peeled off from the laminate, and thus the adhesive layer exposed to the outside is stuck on the nipple of the domestic animal, and then the protective film can be peeled off from the laminated body stuck on the domestic animal without difficulty. .

  In the third aspect of the livestock nipple mouthpiece assembly according to the present invention, the peel strength when peeling the protective film from the laminate is 25 mN / 25 mm or more and 250 mN / 25 mm or less. According to this configuration, when the papillary mouthpiece assembly of the present invention is handled in the market, the protective film can be firmly attached to the laminate, and further, the protective film can be removed from the laminate attached to the nipple. When peeling off, the protective film can be easily peeled off with an appropriate force.

P1 is the peel strength when peeling the protective film from the laminate, P2 is the peel strength when peeling the release sheet from the laminate, and the laminate includes a portion including the nipple mouth of the livestock. When a pressure-sensitive adhesive layer is applied and the peel strength when peeling the pressure-sensitive adhesive layer from the portion is P3,
P2 <P1 <P3
The papillary mouthpiece assembly. When each strength satisfies this range, the laminate can be applied to the nipple including the nipple mouth with good operability.

  According to the nipple mouthpiece for livestock according to the present invention, the laminate is attached to the nipple so as to cover the nipple mouth of the livestock. For this reason, it is not necessary to perform a troublesome treatment such as immersing the nipple of a livestock in a film-forming solution or drying it, and the work for preventing a disease such as mastitis with respect to the livestock is very simple.

  Moreover, the laminated body of this invention is affixed on a nipple so that a nipple mouth may be covered, and it is not wound around a nipple and fixed. For this reason, sufficient adhesiveness is ensured between the nipple mouth which is the front-end | tip part of a nipple, and a laminated body. As a result, it is difficult to form a gap between the nipple mouth and the laminate, and the nipple mouth can be reliably protected from infection with bacteria and the like.

  Moreover, in this invention, since the tensile elasticity modulus of a laminated body is 0.05 MPa or more and less than 1 MPa and the adhesive force of a laminated body is 5 N / 25mm or more, the adhesiveness with respect to the nipple of the laminated body affixed on the nipple Is excellent. Moreover, the laminated body of this invention can be expanded-contracted so that it may follow the deformation | transformation of the teat accompanying operation | movement of livestock by exhibiting moderate elasticity. Furthermore, it is possible to follow the change in the teat size during the dry period and the uneven shape of the teat. For this reason, since the laminated body affixed on the nipple closely_contact | adheres to a nipple, it is very hard to peel off. For this reason, the mouth of the nipple can be reliably protected for a certain period of time, which is said to be easily infected by bacteria or the like.

It is sectional drawing which shows each one Embodiment of the domestic animal nipple mouthpiece and the domestic animal nipple mouthpiece assembly which concern on this invention. It is a top view of the pad and the pad assembly of FIG. It is a figure which shows the modification of a laminated body. It is a figure which shows the dairy cow which is an example of livestock. It is sectional drawing which expands and shows the cross section of a part of nipple of livestock. It is a figure which shows the other modification of a laminated body. It is a top view which shows 2nd Embodiment of the livestock nipple mouthpiece according to this invention, and the domestic animal nipple mouthpiece assembly. It is sectional drawing according to CC line of FIG. It is a top view which shows the other modification of a laminated body. It is a top view which shows 3rd Embodiment of the nipple mouthpiece. It is a top view which shows 4th Embodiment of the nipple mouthpiece. It is a top view which shows 5th Embodiment of the nipple mouthpiece. It is a top view which shows 6th Embodiment of the nipple mouthpiece. It is a top view which shows 7th Embodiment of the nipple mouthpiece. It is a side view which shows the example of sticking to the teat of the nipple mouthpiece. It is a side view of the pseudo teat used when performing the pseudo test in the Example of the present invention and the comparative example.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a domestic nipple mouth pad and a domestic nipple mouth pad assembly according to the present invention will be described based on embodiments. Of course, the present invention is not limited to this embodiment. In addition, in the drawings attached to the present specification, components may be shown in different ratios from actual ones in order to show characteristic parts in an easy-to-understand manner.

(First embodiment of a livestock nipple mouthpiece and livestock nipple mouthpiece)
(Overall configuration and action)
FIG. 1 shows an embodiment of a livestock nipple mouthpiece assembly and a livestock nipple mouthpiece according to the present invention. FIG. 2 shows the planar structure of the pad assembly according to arrow A in FIG. FIG. 1 is a cross-sectional view taken along line GG in FIG. In these drawings, a pad assembly 1A has a laminate 2 as a pad. The laminate 2 has a two-layer structure of an elastic sheet 3 and an adhesive layer 4. The pressure-sensitive adhesive layer 4 is laminated over the entire one surface (the lower surface in FIG. 1) of the elastic sheet 3.

  A protective film 5 is attached to the surface of the laminate 2 opposite to the pressure-sensitive adhesive layer 4. On the other hand, a release sheet 6 is attached to the surface of the pressure-sensitive adhesive layer 4. FIG. 2 shows a configuration in a state where the protective film 5 is removed, and the protective film 5 is indicated by a chain line. The planar shape of the laminated body 2 is circular. The planar shapes of the protective film 5 and the release sheet 6 are rectangular. The rectangular shape is a rectangular shape or a square shape. FIG. 3 shows a modification of the nipple mouthpiece for livestock. The planar shape of the laminated body 2 can also be made into an elliptical shape like the pad assembly 1B shown in FIG. In addition, in the following description, when referring to the pad assembly 1A, the pad assembly 1B is also included. In FIG. 1, the protective film 5 has a protruding portion 5 a that protrudes to the outside of the elastic sheet 3. A cut line 6 a is provided in the central portion of the release sheet 6.

  FIG. 4 shows a dairy cow 10 which is an example of livestock. The dairy cow 10 has a breast 11, and a nipple 12 hangs down from the breast 11. As shown in FIG. 5, there is a milk duct 13 inside the teat 12. A symbol U indicates an upper portion of the teat 12. Reference symbol L indicates the lower part of the teat 12. The milk duct 13 extends in the vertical direction of the teat 12. The lower end of the milk duct 13 opens to the outside of the lower end of the teat 12. This opening is the nipple opening 14. When the operator performs milking, that is, when the teat 12 is squeezed, the milk of the cow is drawn down from the teat mouth 14 through the milk duct 13.

  Half a day in the milking period, which is a period for milking the cow 10, and one week in the dry period (for example, the early dry period and the late dry period before delivery) that are easily infected by bacteria or the like The laminated body 2 as a pad is stuck on the tip of the teat 12 so as to cover the teat mouth 14 of the cow 10 for a certain degree. Further, in order to reliably prevent infection during the dry period, the laminate 2 as a pad is attached to the tip of the teat 12 for 10 days or more, preferably for about 2 weeks, regardless of individual differences in livestock.

  More specifically, as shown in FIG. 5, the laminate 2 is attached to the tip of the nipple 12 by the adhesive layer 4 so that the laminate 2 covers the nipple mouth 14. In this way, the nipple opening 14 is closed by the laminate 2, thereby preventing infection from bacteria from the nipple opening 14.

  When sticking the laminated body 2 to the tip of the nipple 12, the worker first carries the pad assembly 1A of FIG. 1 to the cow 10 of FIG. And the release sheet 6 is peeled from the adhesive layer 4 in the place of the cut line 6a of FIG. 1, and the adhesive layer 4 is exposed outside. Next, the operator applies the exposed adhesive layer 4 to the tip of the nipple 12 of the cow 10 shown in FIG. 4, and attaches the laminate 2 to the tip of the nipple 12. Thereafter, the protective film 5 of FIG. 1 is peeled off from the elastic sheet 3 of the laminate 2. In this way, as shown in FIG. 5, only the laminated body 2 as a pad is attached to the tip of the nipple 12 to close the nipple mouth 14.

In the present embodiment, the laminate 2, that is, the pad, is not present as a single element, but is sandwiched between the protective film 5 and the release sheet 6 because the laminate 2 itself is very soft. This is because it is difficult for the operator to maintain the shape as a flat sheet by himself. That is, the flat sheet shape of the laminate 2 is maintained by the protective film 5 and the release sheet 6 while the laminate 2 is manufactured and while the laminate 2 is distributed in the market.
Hereinafter, each element will be described.

(Laminate 2)
[Tensile modulus]
In this embodiment, the tensile elasticity modulus of the laminated body 2 as a pad is set to 0.05 MPa or more and less than 1 MPa, preferably 0.07 to 0.50 MPa, more preferably 0.07 to 0.25 MPa. The tensile elastic modulus is sometimes called an elastic modulus or Young's modulus. The tensile elastic modulus is a physical property value indicating the ease of deformation or the difficulty of deformation of a substance.

  If the tensile modulus is less than 0.05 MPa, the laminate 2 becomes too soft, and the operability of the laminate 2 for the operator when the laminate 2 is applied to the teat 12 is lowered. On the other hand, when the tensile modulus is 1 MPa or more, the laminate 2 becomes too hard, so that it cannot fit into the nipple shape, and the adhesion of the laminate 2 is impaired. Furthermore, it cannot follow the change of the teat size in the dry period, the unevenness of the surface of the teat, and the like. Since the nipple 12 of the dairy cow 10 is soft and easily deformed, the laminated body 2 cannot follow the deformation of the nipple 12 unless it has an appropriate softness. In this regard, if the tensile modulus of the laminate 2 is set to 0.05 MPa or more and less than 1 MPa as in the present embodiment, the laminate 2 can always follow the teat 12 in a close contact state.

  The tensile modulus of elasticity is best measured by the laminate 2 itself. However, the laminate 2 is thin and soft and has the pressure-sensitive adhesive layer 4, so that it may be difficult to measure. In this case, two laminates 2 having the same composition, layer configuration, and thickness are prepared, the adhesive layers 4 are joined to each other, the tensile elastic modulus of the two laminates 2 is obtained, and one laminate is obtained. It can also be converted into the tensile elastic modulus of the laminate 2.

[Adhesive force]
In this embodiment, the adhesive force of 25 mm width of the laminated body 2 as a pad is 5 N / 25 mm or more. When the adhesive strength is 5 N / 25 mm or more, even if the keratin becomes obsolete over time in the nipple, the laminate 2 can be adhered to the nipple stably for a long period of time.

  Since the nipple 12 is skin, it is generally difficult to attach an object. When the adhesive strength of the laminated body 2 is smaller than 5 N / 25 mm, the laminated body 2 is not properly attached to the teat 12 and peeled off. Furthermore, even if it can be affixed (for example, even if it is affixed using the laminate 2 having an overlapping portion H (see FIG. 15) described in detail below), the keratin of the nipple becomes old, so It becomes difficult to paste. Moreover, the laminated body 2 adheres to the protective film 5 at the time of isolation | separation of the protective film 5, and a part may peel off from a teat, and is unpreferable.

  On the other hand, the upper limit of the adhesive strength of the laminate 2 is not particularly limited, but is preferably 50 N / 25 mm or less. Since livestock is a living thing, an unexpected situation may occur. In such a case, it is necessary to remove the laminate 2 attached to the nipple. By setting the adhesive force to 50 N / 25 mm or less, even if the laminate 2 is removed in a shorter period than planned, the laminate 2 can be easily removed from the nipple. That is, by setting the adhesive strength to 50 N / 25 mm or less, even when the soft laminate 2 is used, the laminate 2 may be removed from the teat in a relatively short period of time. 2 is difficult to tear and can be easily removed.

  For example, in the case of dairy cows, there may be a sudden delivery at a time when it was considered dry. In this case, in order to collect the milk to be given to the born calf, it may be necessary to remove the laminate 2 attached to the nipple within, for example, 3 days. In this case, since the laminated body 2 of the present invention is soft, when a lot of old keratin is not generated on the nipple, the laminated body 2 is broken when removed from the nipple, and it takes time and effort to remove it. In order to cope with such a case, by setting the adhesive strength of the laminated body 2 to 50 N / 25 mm or less, even if the laminated body 2 is removed from the nipple in a relatively short period of time, the laminated body 2 is not torn from the nipple. Can be removed.

  Therefore, in order to achieve a high level of performance for both long-term stable application to the nipple and removal from the nipple in a relatively short period of time, the adhesive strength of the laminate 2 is as follows: A range is preferable. Specifically, it is preferably 5 N / 25 mm or more and 50 N / 25 mm or less, more preferably 10 N / 25 mm or more and 45 N / 25 mm or less, further preferably 15 N / 25 mm or more and 45 N / 25 mm or less, and 15 N / 25 mm or more and 40 N / 25 mm or less is particularly preferable.

[Tackiness]
In the present embodiment, the ball tack number of the pressure-sensitive adhesive layer 4 of the laminate 2 in FIG. 1 is preferably 3 or more, more preferably 5 or more and 30 or less, and even more preferably 10 or more and 20 or less. .

  Tackiness is considered a guideline for instantaneous adhesion. The tackiness is a so-called stickiness. Tackiness, that is, stickiness and adhesive strength are completely different factors. For example, a sticky note is a product having a low stickiness even if the stickiness is large.

If the ball tack number is less than 3, the instantaneous adhesive force of the laminate 2 becomes small, and the laminate 2 may be peeled off immediately after being applied to the teat 12. If the ball tack number is set to 3 or more, the adhesive state of the laminate 2 can be stably maintained immediately after the laminate 2 is affixed to the nipple 12 or for a short time after being affixed. Since livestock such as the dairy cow 10 often moves around, the fact that a stable adhesive state can be established instantaneously is a great advantage for a padding intended for livestock.
On the other hand, the upper limit of the ball tack number is not particularly limited. However, if the ball tack number is greater than 30, the thickness of the pressure-sensitive adhesive layer must be increased, and industrial production tends to be difficult, and the operability during application to the nipple tends to be reduced. Therefore, the ball tack number is more preferably 30 or less.

[Retention force]
In this embodiment, the holding force at 40 ° C. of the pressure-sensitive adhesive layer 4 of the laminate 2 in FIG. 1 is preferably 0 mm or more and 10 mm or less, more preferably 0 mm or more and 5 mm or less, and 0 mm or more and 3 mm or less. More preferably. The holding force for the adhesive material indicates the force with which the adhesive material tries to stay in a certain place. In other words, the holding force is a resistance force against a load. In other words, the holding force is a force that can withstand the displacement of the adhesive.

  When the holding force of the laminated body 2 is larger than 10 mm, the amount of deviation of the laminated body 2 increases, and the laminated body 2 tends to be easily peeled off. According to this embodiment, since the holding force of the pressure-sensitive adhesive layer is set to 0 mm or more and 10 mm or less, it is possible to prevent the laminate from being displaced with respect to the nipple over a long period of time.

[Backside peel strength]
In the present invention, in the laminate 2, the surfaces opposite to the surface on which the pressure-sensitive adhesive layer 4 is laminated are overlapped using a roller of 23 ° C. and 2 kg, and then the stacked laminate 2 is overlapped. It is preferable that the strength (hereinafter simply referred to as “reverse surface peeling strength”) when peeling is removed from 5 N / 25 mm to 30 N / 25 mm. This measurement condition also follows JIS Z0237 as described above.

  When the back surface peel strength satisfies the above range, an excellent effect is exhibited when the laminate 2 has a shape having an overlapping portion H described in detail below. That is, the surfaces opposite to the pressure-sensitive adhesive layer 4 in the laminate 2 are bonded to each other under appropriate adhesive strength. Thereby, in the laminated body 2 affixed on the nipple, even if a float arises, since this surface closely_contact | adheres, a float can be eliminated. As a result, the laminate 2 is difficult to peel off from the nipple, and bacteria and the like are less likely to enter from between the nipple and the laminate 2. Moreover, if this back surface peeling strength is the said range, the laminated body 2 can be affixed on a teat with good operativity. In order to make the above effect more prominent, the back surface peel strength is more preferably 10 N / 25 mm or more and 25 N / 25 mm or less, and further preferably 10 N / 25 mm or more and 20 N / 25 mm or less.

[Thickness]
The thickness of the laminated body 2 is preferably a value within 11 to 150 μm. When this thickness is too thin, it will become difficult to perform the sticking work to the teat 12, and it may be difficult to peel off the used laminate 2 from the teat 12. On the other hand, when the thickness of the laminated body 2 is excessively large, the followability with respect to the deformation of the teat 12 and the unevenness of the surface of the teat is lowered and tends to be peeled off.

(Elastic sheet 3)
When the elastic sheet 3 constituting the laminated body 2 as a pad is provided with the adhesive layer 4 on the laminated sheet 2, each value of tensile elastic modulus, adhesive force, ball tack number and holding force is obtained. Is formed of an elastic material that falls within the above range.

  Examples of such elastic materials include, but are not limited to, olefin elastomers, styrene elastomers, vinyl acetate elastomers, soft vinyl chloride elastomers, urethane elastomers, and the like. Among these elastomers, olefin-based elastomers and urethanes are excellent in adhesion retention with respect to the protective film 5 and are easy to adjust the physical properties so as to obtain the tensile elastic modulus and adhesive strength in the above ranges. Based elastomers are preferred

  That is, in order to ensure a predetermined range of tensile modulus and adhesive strength, the monomer composition (copolymerization ratio), crystallinity, molecular weight, plasticizer content, etc. of the polymer are adjusted to an appropriate range, and What is necessary is just to adjust the thickness of a sheet | seat according to a physical property. When the elastic modulus 3 and the adhesive force are adjusted by adjusting the physical properties and the thickness as described above, when the elastic sheet 3 is formed of polyurethane, the predetermined tensile elastic modulus and adhesive force can be obtained without excessively reducing the thickness. Can do. For example, it is most preferable to form the elastic sheet 3 using polyurethane in order to set the thickness of the laminate 2 within the above-described range and the tensile elastic modulus and the adhesive strength within a predetermined range. Such an elastic sheet 3 made of polyurethane is also advantageous in that the protective film 5 can be directly adhesively fixed without using an adhesive or the like.

  Further, the use of the polyurethane elastic sheet 3 has the following advantages. The elastic sheet 3 on the outermost surface of the laminate 2 attached to the nipple is sticky in itself, and the surfaces of the elastic sheet 3 are easy to adhere to each other. Therefore, even if floating or wrinkles enter the laminated body 2, the elastic sheet 3 in the part with floating or wrinkles is adhered to the portion of the elastic sheet 3 that is in close contact with the nipple 12 by bonding or the like. The elastic sheet 3 and the nipple 12 are firmly bonded to each other, so that floating and wrinkles can be reduced. As a result, it is considered that peeling of the elastic sheet 3 from the teat 12 can be reduced.

  The thickness of the elastic sheet 3 is preferably set such that the thickness of the laminate 2 in which the pressure-sensitive adhesive layer 4 is laminated is in the above-described range (that is, 11 to 150 μm). Specifically, considering that the thickness of the pressure-sensitive adhesive layer 4 is thin, the thickness of the elastic sheet 3 is usually preferably in the range of 10 to 100 μm.

  The elastic sheet 3 is preferably colored. By this coloring, it can be easily visually recognized that the laminated body 2 is affixed even in a dark cowshed. As a result, it is easy to check the state after pasting and pasting.

Furthermore, the following usage is also possible by preparing a plurality of laminated bodies 2 having different colors of the elastic sheet 3. For cattle and the like, there are usually four nipples 12 in one. For example, by changing the color of the laminate 2 to be applied to the nipple 12 that is infected with bacteria or the like among those nipples 12 and needs treatment, and the laminate 2 to be applied to the normal nipple 12, Efficient treatment is possible. Moreover, the color of the laminated body 2 affixed on the teat 12 can also be changed with the domestic animal which needs treatment, and a healthy domestic animal.
Furthermore, if the color of the laminated body 2 is changed depending on the day when the laminated body 2 is affixed to the nipple 12 of a domestic animal, for example, in the case of domestic animals such as dairy cows, it is possible to manage how many days have passed since the dry season began. It becomes easy.
That is, the state of each domestic animal can be grasped by using the color-coded laminate 2.

(Adhesive layer 4)
The pressure-sensitive adhesive layer 4 is laminated on one surface of the elastic sheet 3 described above, and serves as a bonding surface for the teat 12. First, the pressure-sensitive adhesive layer 4 needs to exhibit adhesiveness to the nipple 12 in addition to the elastic sheet 3. Secondly, the pressure-sensitive adhesive layer 4 needs to exhibit an adhesive force that can be quickly removed from the teat 12 after use. As long as the first and second requirements are satisfied, the pressure-sensitive adhesive layer 4 can be formed of a known pressure-sensitive adhesive.

  Such pressure-sensitive adhesives are used for adhesive bandages and the like, and include rubber-based, (meth) acrylic-based, silicone-based, and urethane-based ones. However, silicone-based and (meth) acrylic-based pressure-sensitive adhesives are preferable in that they are particularly safe for domestic teats 12 and do not cause rash.

  Such a pressure-sensitive adhesive layer 4 has a thickness that can secure sufficient adhesion to the teat 12. The pressure-sensitive adhesive layer 4 usually has a thickness of about 1 to 50 μm, provided that the thickness of the laminate 2 (that is, the total thickness of the elastic sheet 3 and the pressure-sensitive adhesive layer 4) is in the range of 11 to 150 μm described above. It is preferable to have

  By adjusting the material, thickness, and the like of the elastic sheet 3 and the pressure-sensitive adhesive layer 4 described above, the laminate 2 satisfying the tensile elastic modulus, adhesive force, ball tack number, holding force, and back surface peel strength defined in the present invention. Can be manufactured.

(Protective film 5)
In FIG. 1, the protective film 5 is laminated | stacked on the surface on the opposite side to the adhesive layer 4 in the elastic sheet 3. As shown in FIG. This protective film 5 prevents deformation of the elastic sheet 3 during storage. Moreover, the protective film 5 is provided in order to make it easy to perform the affixing operation by preventing the elastic sheets 3 from adhering to each other during the operation of affixing the laminate 2 as a pad to the teat 12. Is.

  In the field, first, the release sheet 6 of the pad assembly 1 </ b> A (FIG. 1) is peeled off from the adhesive layer 4. Next, at least a part of the pressure-sensitive adhesive layer 4 is stuck on the teat 12 with the protective film 5 still attached. Next, the protective film 5 of the pad assembly 1 </ b> A attached to the teat 12 is peeled off from the elastic sheet 3 of the laminate 2. Next, the entire pressure-sensitive adhesive layer 4 is adhered and fixed to the teat 12 by pressing or the like by the operator's hand. Of course, depending on the size of the laminate 2, the protective film 5 is peeled off from the laminate 2 after the entire pressure-sensitive adhesive layer 4 is attached to the teat 12.

  Therefore, the protective film 5 should be a film having a waist and should have a higher tensile elastic modulus than the elastic sheet 3. From such a viewpoint, as the protective film 5, various thermoplastic resin films, for example, polyester films such as polyethylene terephthalate (PET), olefin resin films such as polyethylene and polypropylene, and the like are used. In particular, a film having transparency is suitable in that it can recognize the presence of the elastic sheet 3, that is, the presence of the laminate 2.

  A polypropylene film and a polyester film are particularly suitable as the protective film 5 in terms of excellent transparency. In addition, such a film may be any film of an unstretched film, a uniaxially stretched film, and a biaxially stretched film. Among these, considering peeling from the laminate 2, a film having a high tensile elastic modulus is preferable, and thus a uniaxial or biaxially stretched film is preferable.

  The protective film 5 can be laminated on the elastic sheet 3 using an adhesive, or can be directly attached to the elastic sheet 3 without using an adhesive. With respect to the pad assembly 1A in a state where the pressure-sensitive adhesive layer 4 is bonded to the teat 12, the protective film 5 must be peeled off from the laminate 2 in a state where the pressure-sensitive adhesive layer 4 is not peeled off from the teat 12. For this reason, when laminating | stacking the protective film 5 on the elastic sheet 3 using an adhesive, it is necessary to adjust the adhesive force of the adhesive appropriately. In view of this, if the protective film 5 is directly attached to the elastic sheet 3 without using an adhesive, it is desirable in that the adhesive force of the adhesive need not be adjusted.

  Considering that the protective film 5 is directly attached to the elastic sheet 3, the protective film 5 is preferably a polyester film such as PET or an olefin resin film such as polypropylene. In addition, the protective film 5 may be subjected to a surface treatment such as a corona treatment or may not be subjected to such a surface treatment. Such surface treatment on the protective film 5 may be appropriately performed in consideration of the adhesion between the protective film 5 and the elastic sheet 3.

  As described above, the protective film 5 is preferably bonded to the elastic sheet 3 without using an adhesive. Moreover, it is preferable that the overhang | projection part 5a protruded to the outer side of the elastic sheet 3 among the protective films 5 is joined with the release sheet 6 without an adhesive. When the laminate 2 is applied to the nipple 12, the release sheet 6 is first peeled off, and then the adhesive layer 4 is applied directly to the nipple 12. Thereafter, the protective film 5 is peeled off from the elastic sheet 3. At this time, since the adhesive is not attached to the protective film 5 to be peeled off, the protective film 5 can be easily peeled off. As a result, the operability can be further improved.

  The planar size of the protective film 5 is preferably slightly larger than the elastic sheet 3 as shown in FIG. It is because the peeling process of the protective film 5 from the elastic sheet 3 becomes easy. Specifically, the protective film 5 can be easily peeled off from the elastic sheet 3 by picking the protruding portion 5 a protruding from the elastic sheet 3.

  The thickness of the protective film 5 should just be appropriate thickness of the grade which does not impair the peeling operation | work from the elastic sheet 3 of the protective film 5. FIG. The thickness of the protective film 5 is determined in consideration of the thickness of the elastic sheet 3. Actually, in consideration of operability, the thickness of the protective film 5 is preferably 30 μm or more, and more preferably 40 μm or more. In addition, the upper limit of the thickness of the protective film 5 is not specifically limited. However, the thickness of the protective film 5 is preferably 300 μm or less in consideration of operability and economy.

(Release sheet 6)
The release sheet 6 of FIG. 1 prevents the adhesive layers 4 and the adhesive layer 4 and the protective film 5 from adhering at the time of manufacture and storage. The release sheet 6 is peeled off from the laminate 2 prior to the affixing operation when the laminate 2 as a pad is attached to the teat 12. Therefore, the release sheet 6 is preferably formed of a material that can be easily peeled off, although it is held in the pressure-sensitive adhesive layer 4 when not in use. In view of this point, the release sheet 6 is a release paper such as silicone paper.

  The planar shape of the release sheet 6 is preferably the same size or slightly larger than the pressure-sensitive adhesive layer 4 in order to reliably cover the pressure-sensitive adhesive layer 4. Further, in order to easily perform the peeling operation, as shown in FIG. 1, it is desirable that the release sheet 6 is divided or bent at the central portion by the action of the cut line 6a provided at the central portion. By separating or bending the release sheet 6 at the center portion, the following application method is possible.

  The sticking method when the release sheet 6 can be divided at the center (when it can be divided at the position of the cut line 6a) is described below. First, one of the left and right release sheets 6 sandwiching the score line 6 a is peeled off from the laminate 2 with the protective film 5. Then, the peeled adhesive layer 4 is pasted on the teat 12. Next, the left and right other release sheets 6 are peeled off from the laminate 2. Then, the peeled adhesive layer 4 is pasted on the teat 12. Such multi-stage pasting is possible. In the case where the entire large release sheet 6 without the cutting line 6a is peeled off by one operation, there is a high possibility that the adhesive layers 4 will stick to each other when the livestock moves. On the other hand, if the adhesive layer 4 is applied in multiple stages, the risk of the adhesive layers 4 sticking together can be reduced. This multi-stage pasting process is particularly suitable when the laminate 2 of the present embodiment using the elastic sheet 3 that is soft and does not easily maintain a certain sheet shape. And even if it is a case where such a multistage process is performed, when the protective film 5 does not have an adhesive, peeling of the protective film 5 becomes easy and the operativity of the protective film 5 can be improved. In the examples and comparative examples described in detail below, the laminate 2 was affixed to the nipple using this method.

  In this invention, although it may be 1 A of livestock nipple mouthpiece assemblies which have the above-mentioned cut line 6a, it can also be set as the following aspects. That is, the planar shape of the release sheet 6 is the same size as the pressure-sensitive adhesive layer 4 and the elastic sheet 3, and the release sheet 6 does not have the cut line 6a even if it has the cut line 6a. It is the aspect of a papillary mouthpiece assembly. In the case of this papillary mouthpiece assembly, the planar shape of the protective film 5 is preferably slightly larger than the pressure-sensitive adhesive layer 4 and the elastic sheet 3 as described above. Furthermore, in this case, when the protective film 5 is a stretched film, it has sufficient hardness, so even if it is the release sheet 6 that does not have the cut line 6a, the pressure-sensitive adhesive layer 4 can be easily used. The release sheet 6 can be separated from the mold. The operation after separating the release sheet 6 may be performed in the same manner as the above method.

(Characteristics of suitable livestock nipple mouthpiece assembly)
As described above, the nipple mouth pad assembly 1A (FIG. 1) and 1B (FIG. 3) of the present invention are provided on the laminate 2 and the surface of the laminate 2 opposite to the pressure-sensitive adhesive layer 4. It is preferable to have the laminated peelable protective film 5 and the release sheet 6 attached to the surface of the pressure-sensitive adhesive layer 4.

  And in this domestic animal nipple mouthpiece assembly 1A, 1B, the said release sheet 6 is peeled from the said laminated body 2 with respect to the peeling strength at the time of peeling the said protective film 5 from the said laminated body 2. FIG. The peel strength at that time is preferably 0.1 to 0.9 times (hereinafter, sometimes simply referred to as “peel strength ratio”). Since the nipple is soft and the livestock move, it may be difficult to apply. However, when the peel strength ratio is 0.1 to 0.9, the laminate 2 is attached to the nipple with good operability. it can. In order to further improve the operability when the soft laminate 2 is used, the peel strength ratio is preferably 0.3 times or more and 0.8 times or less, and 0.4 times or more and 0.0. More preferably, it is 7 times or less.

In this case, the peel strength when peeling the protective film 5 from the laminate 2 is 25 mN / 25 mm (25 × 10 ⁻³ N / 25 mm) or more and 250 mN / 25 mm (250) because the soft laminate 2 is used. × 10 ⁻³ N / 25 mm) or less. When the peel strength satisfies this range, the laminate 2 can be applied to the nipple with good operability even outdoors. In order to further improve the operability when the soft laminate 2 is used, the peel strength is more preferably 35 m / 25 mm or more and 200 mN / 25 mm or less, and 50 mN / 25 mm or more and 150 mN / 25 mm or less. More preferably.

Furthermore, the peel strength when peeling the protective film 5 from the laminate 2 is P1, the peel strength when peeling the release sheet 6 from the laminate 2 is P2, and the nipple mouth of the livestock is When the adhesive layer 4 of the laminate 2 is affixed to the containing part, and the peel strength when peeling the adhesive layer 4 from the part is P3,
P2 <P1 <P3
It is preferable that When each peel strength satisfies this range, the laminate can be attached to the nipple including the nipple mouth in a state where operability is good.

(Functionality of laminate)
The pad assembly 1A, 1B of the present embodiment having the above-described structure can have a predetermined additional function by a medicine such as a bactericidal disinfectant, a moisturizer, a milk leak test agent, a repellent, or the like. As long as the function of the elastic sheet 3 and the function of the pressure-sensitive adhesive layer 4 are not impaired, this medicine may be blended in the elastic sheet 3 or the pressure-sensitive adhesive layer 4, or the surface of the elastic sheet 3 or the pressure-sensitive adhesive. The surface of the layer 4 may be coated. Furthermore, since the adhesive layer 4 has bleeding properties, these agents can be applied to the interface between the elastic sheet 3 and the adhesive layer 4.

  Examples of the disinfectant described above include metals such as iodine compounds, silver, trunk, zinc, titanium, iron, and metal salts, tea leaf powder, hinoki powder, chitosan, benzalkonium chloride, benzethonium chloride, caprylic acid monoglyceride, etc. And fatty acid esters such as triclosan, isopropylmethylphenol, cetylpyridinium chloride, resorcin, trichlorocarbanide, halocarban, chlorhexidine, chlorhexidine hydrochloride, chlorhexidine gluconate, acrinol, sodium hypochlorite, hydrogen peroxide, and the like.

  Among these, iodine compounds and silver are preferable from the viewpoints of skin irritation to humans or livestock, sustainability of sterilizing and disinfecting effects, and cost.

  Examples of the iodine compound include iodine, popidone iodine, sodium iodate, potassium iodate, sodium iodide, potassium iodide, iodoform, and the like.

  Examples of the moisturizing agent include polyhydric alcohols such as petrolatum, glycerin, propylene glycol, 1,3-butylene glycol, sorbitol, and natural moisturizing ingredients such as chitosan, pyrrolidone carboxylate and lactate, urea and sodium hyaluronate. It is done.

  As the breast leakage test agent, a general reagent that reacts with proteins and sugars to develop color can be used. The functionality-imparting agent layer may be formed from a single medicine or a plurality of medicines, each of the sterilizing / disinfecting agent, the moisturizing agent, and the milk leakage test agent.

  The repellent is a so-called insect repellent, and examples thereof include natural product-derived components such as eucalyptus oil, chrysanthemic acid and citronella, natural pyrethroids such as pyrethrin, and synthetic pyrethroids such as allethrin. Such a repellent is generally applied to the surface of the elastic sheet 3 opposite to the pressure-sensitive adhesive layer 4. By using such a repellent, the teat 12 can be protected from insects that cause harm to cattle such as flies and bees.

(Shape of laminate)
In FIG. 2, the planar shape of the laminate 2 is a circular shape having a minimum size necessary for completely covering the teat opening 14 of FIG. 5. 3, the planar shape of the laminate 2 is an elliptical shape having a minimum size necessary for completely covering the nipple mouth 14 of FIG. These circular and elliptical shapes are the simplest shapes, and as a result, there is an advantage that wrinkles are not easily formed in the laminated body 2 in a state of being attached to the teat 12.

  For example, in these laminated bodies 2, the length of the diameter d of the circle and the length of the major axis d of the ellipse are 5 to 40 mm, particularly 10 to 40 mm. In the case of the ellipse shown in FIG. 3, the length of the minor axis d 'is preferably about 50 to 90% of the length of the major axis d. If it is an absolute value, the length of the minor axis d 'is preferably 2.5 mm or more, and more preferably 4 mm or more.

(Modified example of laminate)
It should be noted that the description of the characteristics made with respect to the pad assembly 1A (FIG. 2) and 1B (FIG. 3) so far applies to the embodiments of the pad assembly thereafter. FIG. 6 shows another embodiment of a livestock nipple mouthpiece assembly according to the present invention. In the pad assembly 1C shown here, a plurality of (four in the embodiment) cuts 17 are provided in the circular laminate 2, and thus the elastic sheet 3 and the pressure-sensitive adhesive layer 4. Each of these cuts 17 extends from the periphery of the laminate 2 toward the center of the circle.

  By providing the plurality of cuts 17, the area where the laminate 2 is attached to the side surface of the nipple 12 is reduced, but the followability of the laminate 2 with respect to the deformation of the nipple 12 can be enhanced. Further, by providing the plurality of cuts 17, the elastic sheet 3 can be easily turned (turned), and the workability of attaching to the teat 12 and the workability of peeling from the teat 12 can be improved. Similar cuts 17 can be provided for the elliptical laminate 2 in FIG.

  The incision 17 as described above should be sized so that the papillary opening 14 (see FIG. 5) is not exposed in the portion of the incision 17 when the laminate 2 is affixed to the nipple 12. For example, the notch 17 is preferably about 10 to 40% of the diameter d of the circle in FIG. 2 or the major axis d of the ellipse in FIG.

  By providing the cuts 17, the size, that is, the area of each of the cuts 17 is set to an appropriate size so that the adhesive strength of the laminate 2 to the teat 12 does not decrease. Furthermore, it is desirable that the plurality of cuts 17 be line symmetric with respect to the horizontal center line X0 and / or the vertical center line X1 of the laminated body 2 so that unevenness is not generated in the adhesive force of the laminated body 2 with respect to the nipple 12. . In addition, the plurality of cuts 17 are desirably arranged point-symmetrically with respect to the center point P0 of the stacked body 2.

  When the circular or elliptical laminate 2 shown in FIGS. 2 and 3 is used, it can be stably applied for about one week after being applied to the nipple. Also, the operation is relatively simple. However, when it is desired to apply the paste for one week or longer, for example, it is preferable to use the laminate 2 having the shape illustrated in FIGS. 7, 9, and 10 to 15 described below. That is, the laminate 2 having a nipple mouth covering portion 18 and a nipple side surface covering portion 19 and having a structure in which the nipple side surface covering portions 19 overlap each other when applied to the nipple (see overlapping portion H / see FIG. 15). It is preferable to have a structure of Specific examples will be described below, but the laminate 2 of the present invention is not limited to these shapes.

(Second embodiment of a livestock nipple mouthpiece and livestock nipple mouthpiece)
7 and 8 show a second embodiment of the pad assembly. 7 is a plan view, and FIG. 8 is a cross-sectional view according to the line CC in FIG. A pad assembly 1 </ b> D shown here has a laminate 2, a protective film 5, and a release sheet 6. It is the same as that of the previous embodiment that the laminated body 2 of this embodiment is a 2 layer structure of the elastic sheet 3 and the adhesive layer 4. FIG. In FIG. 7, in order to show the laminated body 2 in an easy-to-understand manner, the protective film 5 is indicated by a virtual chain line. The laminated body 2 of this embodiment has the nipple mouth covering part 18 and the nipple side surface covering part 19 when functionally considered.

  The nipple mouth covering part 18 is a part which covers the nipple mouth 14 of FIG. The shape of the area of the nipple mouth covering portion 18 is the same as the shape of the circular area of the laminate 2 in FIG. Moreover, this area | region can also be made the same with the shape of the elliptical area | region of the laminated body 2 of FIG. The nipple side cover portion 19 is a portion that continues to the nipple mouth cover portion 18 and extends to the outside of the nipple mouth cover portion 18. The nipple side surface covering portion 19 has a wide central portion E in which the central portion has the same width as the width of the nipple mouth covering portion 18 and the tip portion away from the central portion spreads in the lateral direction. The nipple side surface covering portion 19 has a plane shape that is line-symmetric with respect to both the horizontal center line X0 and the vertical center line X1. The nipple mouth covering portion 18 and the nipple side surface covering portion 19 are structurally formed as a single body by a two-layer structure of the elastic sheet 3 and the adhesive layer 4.

  In the laminated body 2 of this embodiment, the nipple mouth covering part 18 is affixed on the front-end | tip part of the nipple 12 so that the nipple mouth 14 of FIG. 5 may be covered, and the nipple side surface covering part 19 is the side part of the nipple 12 of FIG. Is pasted. Thus, in this embodiment, since the laminate 2 is firmly adhered and fixed to the side surface portion of the nipple 12, even when the nipple 12 is deformed, it can move freely following the deformation, and the nipple 12. There's no way out.

  When sticking the laminated body 2 of this embodiment to the teat 12 of the cow 10 of FIG. 4, in FIG.7 and FIG.8, first, the release sheet 6 is peeled from the adhesive layer 4, and the adhesive layer 4 The nipple mouth covering portion 18 is attached to the distal end portion of the nipple 12 so as to cover the nipple mouth 14 of FIG. The nipple side cover portion 19 is adhered and fixed to the side surface of the nipple 12 while the protective film 5 in FIGS. 7 and 8 is peeled off in a state where the nipple mouth covering portion 18 is attached to the tip portion of the nipple 12. At the time of this adhesion, the nipple side surface covering portion 19 is adhered to the side surface of the nipple 12 while being bent around a boundary portion D with the nipple mouth covering portion 18. Thus, since the laminated body 2 is affixed also to the side part of the nipple 12, the laminated body 2 is firmly affixed on the nipple 12. FIG.

  In the present embodiment, the outer peripheral edge of the nipple side surface covering portion 19 is formed by a continuation of a smooth curve, and there is no pointed portion formed by crossing a pair of straight sides. Therefore, there is no pointed portion on the outer peripheral edge of the nipple side surface covering portion 19 adhered to the side surface portion of the nipple 12. If there is a pointed portion on the outer peripheral edge of the nipple side surface covering portion 19, the nipple side surface covering portion 19 tends to peel off from the pointed portion, but in this embodiment, such a pointed portion does not exist. Further, peeling of the nipple side surface pasting portion 19 hardly occurs.

  In the present embodiment, as shown in FIG. 7, the nipple side surface covering portion 19 has a shape that widens toward the outer wide portion E. Therefore, the area of the laminated body 2 of the part fixed to the side surface of the nipple 12 by adhesion is large. If the dimension of the wide portion E is increased, the entire side surface of the nipple 12 can be covered with the nipple side surface covering portion 19. Further, when the pair of nipple side cover portions 19 existing on both sides with the horizontal center line X0 as a boundary in FIG. 7 are folded along the side surface of the nipple 12, the nipple side cover portions 19 overlap with each other. It is also possible to realize a structure that is firmly fixed to the 12 side surfaces.

  In the present embodiment, the longitudinal length L1 of the laminate 2 is preferably in the range of 30 to 200 mm, and more preferably in the range of 50 to 150 mm. The lateral length L2 is preferably in the range of 20 to 150 mm, and more preferably in the range of 30 to 100 mm. L1 and L2 may be equal.

(Modified example of laminate)
FIG. 9 is a view for explaining a modification example of the laminate 2 in FIG. For a livestock nipple mouthpiece assembly 1E shown in FIG. 9, a virtual quadrilateral Q circumscribing the laminate 2 is considered. The longitudinal length L1 of the virtual circumscribed quadrilateral Q is preferably in the range of 30 to 200 mm, and more preferably in the range of 50 to 150 mm. The lateral length L2 is preferably in the range of 20 to 150 mm, and more preferably in the range of 30 to 100 mm. L1 and L2 may be equal.

  In the embodiment of FIG. 7, the planar shape of the laminate 2 is as follows, that is, both end portions of the nipple side surface covering portion 19 are wide portions E, the width of the central nipple mouth covering portion 18 is narrow, The width of the laminate 2 is widened from the nipple cover portion 18 toward the wide portion E at both end portions, is symmetrical with respect to both the horizontal and vertical center lines X0 and X1, and the outer peripheral edge is connected by a smooth curve. Shape. Hereinafter, this planar shape may be referred to as “a wide curved symmetrical shape at both ends”.

  The planar shape of the laminated body 2 can be an arbitrary planar shape inscribed in the virtual circumscribed quadrilateral Q circumscribing the above-mentioned “both ends wide curved symmetrical shape”. In some cases, the virtual circumscribed quadrilateral Q itself can be the planar shape of the laminate 2. However, also in this case, it is desirable to set the four corners of the virtual circumscribed quadrilateral Q not to a sharp shape but to a curved shape such as an arc shape.

  Making the planar shape of the laminated body 2 as a nipple mouthpiece for domestic animals into a shape inscribed in the virtual circumscribed quadrilateral Q means that the laminated body 2 is wound around the side surface of the nipple 12 and is fixed by being adhered. Instead, it means that the nipple side cover portion 19 is bent and adhered to the side surface of the nipple 12 with the nipple mouth cover portion 18 attached to the nipple mouth 14 of FIG. Since the type that is wound and fixed has a so-called long shape, the virtual circumscribed quadrilateral Q having the above size cannot be formed.

  Since the laminated body 2 having an arbitrary shape inscribed in the virtual circumscribed quadrilateral Q as in this embodiment is not wound around the side surface of the nipple 12 and fixed, it is attached to the nipple mouth 14 of the laminated body 2. Insufficient adhesion such as wrinkles is unlikely to occur in the part where the gap is present, and the formation of voids between the nipple opening 14 and the adhesive layer 4 of the laminate 2 can be effectively suppressed. As a result, the nipple opening 14 can be firmly protected by the laminate 2.

(Third embodiment of a nipple mouthpiece for livestock)
FIG. 10 shows a planar structure of the third embodiment of the nipple mouthpiece. In the present embodiment, the laminate 2 as a pad has a two-layer structure of an elastic sheet 3 and an adhesive layer 4 in view of the structure. The cross-sectional structure of the laminated body 2 according to the FF line is the same as that of the laminated body 2 shown in FIG. When viewed functionally, the laminated body 2 of the present embodiment includes a nipple mouth covering portion 18 located in the center portion, and three nipple side surface covering portions 19 provided around the nipple mouth covering portion 18. Yes.

  The shape of the area of the nipple mouth covering portion 18 is the same circular shape as the planar shape of the laminate 2 in FIG. Each of the three nipple side surface covering portions 19 is formed in a triangular shape having the center point P0 of the nipple mouth covering portion 18 as a vertex. However, the outer peripheral edge 19a of each nipple side surface covering portion 19 has a gently curved side, and the corners 19b and 19b of the outer peripheral edge of each nipple side surface covering portion 19 are rounded, that is, R ( Earl) shape is attached. The nipple side surface covering portion 19 is bent along the side surface of the nipple 12 (see FIG. 5) at a boundary portion D between the nipple mouth covering portion 18 and the nipple side surface covering portion 19.

(Fourth embodiment of a nipple mouthpiece for livestock)
FIG. 11 shows a planar structure of the fourth embodiment of the nipple mouthpiece. Also in this embodiment, the laminated body 2 as a pad has a two-layer structure of an elastic sheet 3 and an adhesive layer 4 in view of the structure. The cross-sectional structure of the laminated body 2 according to the FF line is the same as that of the laminated body 2 shown in FIG. When viewed functionally, the laminated body 2 is composed of a nipple mouth covering portion 18 located in the central portion and four nipple side surface covering portions 19 provided around the nipple mouth covering portion 18. Each of the four nipple side surface covering portions 19 is formed in a triangular shape having the center point P0 of the nipple mouth covering portion 18 as a vertex. However, the outer peripheral edge 19a of each nipple side surface covering portion 19 has a gently curved side, and the corners 19b and 19b of the outer peripheral edge of each nipple side surface covering portion 19 are rounded, that is, R ( Earl) shape is attached. The nipple side surface covering portion 19 is bent along the side surface of the nipple 12 (see FIG. 5) at a boundary portion D between the nipple mouth covering portion 18 and the nipple side surface covering portion 19.

(Fifth Embodiment of Domestic Nipple Mouthpiece)
FIG. 12 shows a planar structure of a fifth embodiment of the nipple mouthpiece. Also in this embodiment, the laminated body 2 as a pad has a two-layer structure of an elastic sheet 3 and an adhesive layer 4 in view of the structure. The cross-sectional structure of the laminated body 2 according to the FF line is the same as that of the laminated body 2 shown in FIG. When viewed functionally, the laminated body 2 is composed of a nipple mouth covering portion 18 located in the central portion and four nipple side surface covering portions 19 provided around the nipple mouth covering portion 18.

  In the present embodiment, the planar shape of the nipple mouth covering portion 18 is an elliptical shape. And the upper and lower parts of the figure of the nipple side surface covering portion 19 are large side surface covering portions 19a, and the left and right portions are small side surface covering portions 19b.

(Sixth embodiment of a nipple mouthpiece for livestock)
FIG. 13 shows a planar structure of a sixth embodiment of the nipple mouthpiece. Also in this embodiment, the laminated body 2 as a pad has a two-layer structure of an elastic sheet 3 and an adhesive layer 4 in view of the structure. The cross-sectional structure of the laminated body 2 according to the CC line is the same as that of the laminated body 2 shown in FIG. When viewed functionally, the laminated body 2 of the present embodiment includes a nipple mouth covering portion 18 located in the center portion and two nipple side surface covering portions 19 provided on both upper and lower sides of the nipple mouth covering portion 18. ing.

  The nipple side surface covering portion 19 of the present embodiment has an asymmetric planar shape with respect to the lateral center line X0. The upper nipple side surface covering portion 19a is formed in a substantially rectangular shape, and its lateral width W0 is the same width as the diameter d of the nipple mouth covering portion 18 which is a circular region. The lower nipple side surface covering portion 19b has a width W1 sufficiently larger than the diameter d. The lower nipple side surface covering portion 19b spreads while gently curving from the portion connected to the nipple mouth covering portion 18 to the tip portion. The left and right side portions 19c, 19c at the lower end of the lower nipple side surface covering portion 19b are also curved sides that do not have sharp edges. As described above, the planar shape of the laminate 2 of the present embodiment is generally an inverted T shape.

(Seventh embodiment of a nipple mouthpiece for livestock)
FIG. 14 shows a planar structure of a seventh embodiment of the nipple mouthpiece. Also in this embodiment, the laminated body 2 as a pad has a two-layer structure of an elastic sheet 3 and an adhesive layer 4 in view of the structure. The cross-sectional structure of the laminated body 2 according to the CC line is the same as that of the laminated body 2 shown in FIG. When viewed functionally, the laminated body 2 of the present embodiment includes a nipple mouth covering portion 18 located in the center portion and two nipple side surface covering portions 19 provided on both upper and lower sides of the nipple mouth covering portion 18. ing.

  The shape of the area of the nipple mouth covering portion 18 is the same circular shape as the planar shape of the laminate 2 in FIG. The planar shape of the two nipple side surface covering portions 19 is a square shape or a rectangular shape, respectively. However, R (R / curved shape) is provided at four corners of a square shape or a rectangular shape and is not sharp. Notches 20 and 20 are provided in the left and right portions of the nipple mouth covering portion 18 on the horizontal center line X0 of the laminate 2. The notches 20 and 20 extend from the peripheral edge of the laminate 2 toward the center point P0. The two nipple side surface covering portions 19 face each other across the lateral center line X0.

(Common items of the embodiments shown in FIGS. 10, 11, 12, 13, and 14)
In these embodiments, the laminate 2 is inscribed in the virtual circumscribed quadrilateral Q. The longitudinal length L1 of the virtual circumscribed quadrilateral Q is preferably in the range of 30 to 200 mm, and the lateral length is preferably in the range of 20 to 100 mm.

  Any laminate 2 has at least a line-symmetric shape. The pointed portion formed by the intersection of the straight lines does not exist in any laminate 2. The virtual circumscribed quadrilateral Q is set to a size that facilitates the application of the laminate 2 to the teat 12 (see FIG. 5). The number and size of the nipple side surface covering portions 19 are set so that the operation of peeling the laminated body 2 from the nipple 12 is facilitated.

  When the area of the virtual circumscribed quadrilateral Q is 100%, the area of the stacked body 2 is preferably 40 to 98%. As the area of the laminated body 2 approaches 100%, that is, as the shape of the laminated body 2 approaches the shape of the virtual circumscribed quadrilateral Q, the workability for the laminated body 2 improves, and the laminated body 2 is further applied to the nipple 12. The floating and wrinkle generation of the laminated body 2 can be suppressed.

  In order to further improve workability and further maintain the state of the laminated body 2 after pasting, when the area of the rectangular virtual circumscribed quadrilateral Q is 100%, the area of the laminated body 2 is 55 to 95. % Is more preferable, and 55 to 80% is most preferable.

  By using the laminated body 2 provided with the nipple side surface covering portion 19, that is, by fixing the laminated body 2 not only to the tip portion of the nipple 12 but also to the side surface portion of the nipple 12 by adhesion, depending on individual differences of livestock. In addition, for 10 days or more, preferably for about 2 weeks, it is difficult to peel off due to close contact with the nipple 12, and the nipple mouth 14 can be reliably protected. As a result, for example, in dairy cows, infection during the dry period can be more reliably prevented.

  The laminated body 2 provided with the nipple side surface covering part 19 like each embodiment shown to each figure of FIG.7, FIG.9, FIG.10, FIG.11, FIG.12, FIG.13, FIG. Thus, the nipple mouth covering part 18 of the laminated body 2 is fixed to the nipple mouth 14 by adhesion so as to cover the nipple mouth 14. And the nipple side surface covering part 19 of the laminated body 2 is fixed to the side surface of the nipple 12 by adhesion in a state where the nipple side surface covering part 19 is bent at the boundary line portion with the nipple mouth covering part 18.

  Further, as shown in FIG. 7 and FIG. 13, with respect to the laminate 2 having a shape in which the nipple side surface covering portion 19 greatly expands in the left-right direction, as shown in FIG. The side surfaces of the nipple 12 overlap each other as indicated by the symbol H. Thereby, the laminated body 2 is firmly adhered and fixed to the side surface of the teat 12. The maximum width W <b> 1 of the overlapping portion H has a different optimum value depending on the size, shape, and the like of the nipple 12, and thus cannot be generally limited.

  However, the maximum width W1 of the overlapping portion H is preferably 2 mm or more and 45 mm or less in order to improve the operability, improve the adhesion more reliably, and reduce wrinkles (non-adhered portions). It is more preferably 30 mm or less, and further preferably 3 mm or more and 15 mm or less. The overlapping portion H can also be formed by slightly stretching the laminated body 2 and attaching it to the nipple 12 when the laminated body 2 is attached to the nipple 12.

  As a matter of course, the nipple mouth of domestic animals including the nipple mouthpiece having the shape illustrated in FIGS. 6, 7, 9, 10, 11, 12, 12, 13, 14, and 15. When the release sheet is provided in the application article assembly, a mode in which a cut line is provided in the center of the release sheet (for example, the cut line 6a in FIG. 8) may be provided, and a mode in which no cut line is provided. There may be. In the case of the form of FIG. 6, it can be affixed to the nipple by the same operation as that of the shape of FIG. 1A, 1B.

  In a livestock nipple mouthpiece assembly including the nipple mouthpiece shape of the shape illustrated in FIGS. 7, 9, 10, 11, 12, 13, 14, and 15, the release sheet is a score line. When it has, it is preferable to affix on a teat by the following method. First, with the release sheet side facing the nipple side, the nipple mouth pad assembly is placed behind the nipple so that the longitudinal length is in the vertical direction so that the center point is almost the same position as the nipple mouth. Deploy. Next, the upper release sheet sandwiching the score line is peeled off from the laminate with the protective film. And the adhesive layer of the peeled part is affixed on a nipple (a nipple side surface covering part is affixed on a nipple). Further, the lower release sheet is peeled off from the laminate with the protective film. Then, the laminate is folded along the nipple together with the protective film, and the adhesive layer of the peeled portion is attached to the nipple (the nipple side cover is attached to the nipple). At this time, it is preferable to peel off the upper protective film from the laminated body in advance so that the adhesive layer of the laminated body located below does not adhere to the protective film located above. And it is preferable to remove a protective film completely, and finally to wrap a teat with a palm and to remove the floating part of a laminated body.

  In a livestock nipple mouthpiece assembly including the nipple mouthpiece shape of the shape illustrated in FIGS. 7, 9, 10, 11, 12, 13, 14, and 15, the release sheet is a score line. As described in the first embodiment (release sheet 6), the planar shape of the protective film 5 is preferably slightly larger than the pressure-sensitive adhesive layer 4 and the elastic sheet 3 as described above. . In this case, it is preferable to apply to the nipple by the following method. First, with the release sheet side facing the nipple side, the nipple mouth pad assembly is placed behind the nipple so that the longitudinal length is in the vertical direction so that the center point is almost the same position as the nipple mouth. Deploy. Next, the release sheet portion above the center portion is peeled off from the laminate with the protective film. And the adhesive layer of the peeled part is affixed on a nipple (a nipple side surface covering part is affixed on a nipple). The subsequent operation is the same as that when using the papillary mouthpiece assembly having the above-described incision line.

  In addition, the said sticking method is an example at the time of sticking a laminated body to a nipple, and in this invention, it is not limited to the said sticking method.

(Other embodiments)
The present invention has been described with reference to the preferred embodiments. However, the present invention is not limited to the embodiments, and various modifications can be made within the scope of the invention described in the claims.
For example, in the above-described embodiment, a dairy cow is exemplified as a domestic animal. However, if necessary, the nipple-mouthed pad assembly and the nipple-mouthed pad of the present invention can be applied to other living animals.

EXAMPLES Hereinafter, although this invention is demonstrated in detail using an Example and a comparative example, this invention is not limited to a following example.
(Preparation of livestock nipple mouth padding and laminate 2)
In Examples and Comparative Examples, laminates A to H shown in Tables 1 and 2 below were prepared. The laminates A to H were made of elastic sheets and pressure-sensitive adhesive layers having the materials shown in Table 1, and the composition, thickness, and the like of the materials were changed to obtain laminates having the characteristics shown in Tables 1 and 2. In addition, a biaxially oriented polypropylene having a thickness of 60 μm is used for the protective film, and a 75 μm-thick mount that is coated with a release agent is prepared for the release sheet. Got ready.
In addition, in the measurement of adhesive force, 40 ° C. holding force, etc., those affected by the elongation of the elastic sheet were measured by lining the polyethylene terephthalate film on the back surface and eliminating the influence of the elongation of the elastic sheet.

(Example 1-1)
<Paste test with simulated nipple>
In the nipple mouthpiece assembly A, a laminate A (nipple mouthpiece) having a circular diameter d = 15 mm as shown in FIG. 2 was used. A nipple for a baby bucket (made of natural rubber) as shown in FIG. 16 is used as a pseudo nipple, and the laminate A having the above-described shape is applied to the tip of the pseudo nipple (applied as shown in FIG. 5). The state of wrinkles on the nipple mouth after application (7 days later) was visually evaluated. The results are shown in Table 3. In addition, the unit of the numerical value in FIG. 16 is mm.

(Example 1-2)
<Adhesion maintenance evaluation by dairy cows>
Using the papillary mouthpiece assembly A prepared in Example 1-1, the laminate A (papillae mouthpiece) was attached to the nipples of three Holstein cows as shown in FIG. The adhesion maintaining property was evaluated. The results are shown in Table 4.
The three Holstein cows that were tested this time are all dry cows. In addition, in consideration of individual differences among dairy cows, dairy cows to which protective patches (that is, hitting objects) were attached were replaced after 7 days to evaluate adhesion maintenance. Before applying the protective patch, dirt and sebum adhering to the nipple tip were wiped off with a wet tissue.
The adhesion state of the protective patch was evaluated in four stages according to the following criteria.
3: No peeling or lifting of the protective patch from the teat.
2: The end of the protective patch is in a floating state.
1: The end of the protective patch is completely peeled off.
0: The entire protective patch is completely peeled off.
In addition, in the adhesion maintenance evaluation, when a defective product occurs in the following paste operability evaluation, the laminate is applied again, and the product attached to the nipple in a clean state is evaluated. It was.

<Adhesion operability evaluation of laminate>
The application to the nipple was performed as follows. First, the release sheet is separated from the portion of the scribe line a from the papillary mouthpiece assembly A, and the adhesive layer 4 is brought into close contact with the nipple. Next, the laminate A is affixed to the nipple by separating the protective film from the laminate A. At this time, the operability was evaluated by the following method.

<Evaluation of operability-1; Evaluation at the time of first pasting>
3: When the pressure-sensitive adhesive layer 4 was brought into close contact with the nipple, it was brought into close contact with the nipple without any problem in all tests.
2: When the pressure-sensitive adhesive layer 4 was brought into close contact with the nipple, in 12 tests, there was one that did not sufficiently adhere to the nipple in one or more tests.
1: When the pressure-sensitive adhesive layer 4 was brought into close contact with the nipple, there were some that did not adhere sufficiently to the nipple in 12 or 5 tests.

<Operability evaluation-2; evaluation when the protective film is separated>
3: After attaching the laminate to the nipple, when separating the protective film, the protective film could be separated without any problem in all tests.
2: After pasting the laminate on the nipple, when separating the protective film, 1 time or more in 12 times 4
In the test less than the number of times, the laminates were in close contact with each other and could not be applied well (redoing was necessary).
1: After pasting the laminate on the nipple, when separating the protective film, the laminates were in close contact with each other and could not be successfully stuck in 12 or more tests (required reworking).

<Evaluation of removal operability of laminate>
Separately from the above-mentioned adhesion maintenance evaluation, the operability (removal operation evaluation) at the time of removing the laminate once attached to the nipple was evaluated. This removal operability evaluation is based on the assumption that an unforeseen situation occurs and the laminate attached to the nipple is removed suddenly. Three days after the laminate is attached to the nipple, the laminate is removed from the nipple. The operability during the evaluation was evaluated by the following method. In addition, in the removal operation evaluation, when a defective product occurs in the application operability evaluation, the laminate is applied again, and the evaluation of the product attached to the nipple in a clean state is performed. It was.
3: Three days after application, when the laminate was removed from the nipple, the laminate could be removed without breaking in all tests.
2: When the laminate was removed from the nipple 3 days after application, the laminate was broken in 1 to 4 times in 12 tests.
1: Three days after application, when the laminate was removed from the nipple, the laminate was torn in 5 or more tests out of 12.

(Example 2-1)
In the nipple mouthpiece assembly A, a laminate A (nipple mouthpiece) having the shape shown in FIG. 14 was prepared. Here, the diameter d of the circular teat mouth covering portion 18 was 25 mm, the virtual longitudinal length L1 was 100 mm, and the lateral length L2 was 60 mm. In addition, when the area of the virtual circumscribed quadrilateral Q was 100%, the area of the laminate A was 92.5%.
This laminated body A (a nipple mouthpiece) was affixed to the pseudo nipple of FIG. 16, and the pseudo nipple sticking test was done like Example 1-1. The results are shown in Table 5. In addition, when the laminated body A was affixed on the pseudo teat of FIG. 16 as shown in FIG. 15, the maximum width W1 of the overlap part 25 was about 9 mm.

(Examples 3-1 to 6-1 and Comparative examples 1-1 to 3-1)
In Example 2-1, except having used the laminated body shown in Table 5, operation similar to Example 2-1 was performed and the same evaluation was performed. The results are summarized in Table 5.

(Example 2-2)
Using the papillary mouthpiece assembly A (laminate A) used in Example 2-1, the adhesion maintaining property was evaluated in the same manner as in Example 1-2. The laminate A was affixed to the nipple as shown in FIG. 15, and the evaluation period was up to 14 days. The evaluation method performed the same evaluation as Example 1-2. The results are summarized in Table 6.

(Examples 3-2 to 6-2 and Comparative Examples 1-2 to 3-2)
In Example 2-2, the same evaluation as in Example 2-1 was performed except that the laminates shown in Table 6, Table 7, and Table 8 were used. The results are summarized in Table 6, Table 7, and Table 8.

  1A, 1B, 1C, 1D, 1E. 1. A papillary assembly for nipples of livestock 2. Laminate (a nipple mouthpiece for livestock), 3. elastic sheet; 4. adhesive layer; Protective film, 5a. 5. overhang, Release sheet, 6a. Score line, 10. 10. Dairy cattle (livestock) Breast, 12. Nipple, 13. Breast duct, 14, nipple mouth, 17. Cutting, 18. 18. Nipple cover, 19. Nipple side cover, 19a. Large nipple side cover, 19b. Small nipple side cover, 19c. 21. both side portions of the lower end; Notch, d. Diameter, major axis, d '. Short axis, D.D. Boundary line part, E. Wide part, H.I. Overlapping portion, L. Lower nipple, L1. Longitudinal length, L2. Lateral length, P0. Center point, Q. Virtual circumscribed quadrilateral, U. Upper nipple, W0. Width, W1. Maximum width, X0. Horizontal center line, X1. Vertical center line

Claims (8)

A papillary mouthpiece to be affixed to a portion including the nipple mouth of livestock,
It has a laminate of an elastic sheet and an adhesive layer laminated on one surface of the elastic sheet,
An animal papillary mouthpiece, wherein the laminate has a tensile elastic modulus of 0.05 MPa or more and less than 1 MPa, and the laminate has a 25 mm width adhesive strength of 5 N / 25 mm or more.   2. The livestock nipple mouthpiece according to claim 1, wherein the pressure-sensitive adhesive layer has a ball tack number of 3 or more.   2. The nipple mouthpiece for livestock according to claim 1, wherein the adhesive layer has a holding power at 40 ° C. of 0 mm or more and 10 mm or less.   In the laminate, after the surfaces opposite to the surface on which the pressure-sensitive adhesive layer is laminated are overlapped using a roller of 23 ° C. and 2 kg, the strength when peeling the overlapped laminate is 5N. It is / 25mm or more and 30N / 25mm or less, The pad for domestic animals' nipple mouth of Claim 1 characterized by the above-mentioned. A livestock nipple mouthpiece according to claim 1;
A peelable protective film laminated on the surface opposite to the pressure-sensitive adhesive layer in the laminate,
A release sheet affixed to the surface of the pressure-sensitive adhesive layer;
A papillary assembly for a nipple mouth of livestock characterized by having   The peel strength when peeling the release sheet from the laminate is 0.1 to 0.9 times the peel strength when peeling the protective film from the laminate. A papillary assembly for a nipple mouth of livestock according to claim 5.   6. The livestock nipple mouthpiece assemblage assembly according to claim 5, wherein a peel strength when peeling the protective film from the laminate is 25 mN / 25 mm or more and 250 mN / 25 mm or less. P1 is the peel strength when peeling the protective film from the laminate,
P2 is the peel strength when peeling the release sheet from the laminate,
When the adhesive layer of the laminate is applied to the part including the nipple mouth of the livestock, and the peel strength when peeling the adhesive layer from the part is P3,
P2 <P1 <P3
A papillary assembly for a nipple mouth of livestock according to claim 5.

Images