JP2014118316A - Gas generating tape and micropump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas generating tape which can increase a usage rate of a light or heat responsive gas generating agent.SOLUTION: A gas generating tape 1 comprises a base film 11 and a gas generating material layer 12. The base film 11 has a first recessed part 11a on the first surface side. The gas generating material layer 12 is arranged on a first surface of the base film 11 so as to include the inside of the first recessed part 11a. The gas generating material layer 12 comprises a light or heat responsive gas generating agent and a binder resin.

Description

  The present invention relates to a gas generating tape and a micropump including the gas generating tape.

  In recent years, analyzers using microfluidic devices have been used as analyzers that are small and have excellent portability. In the analysis apparatus using this microfluidic device, it is possible to perform liquid feeding, dilution, concentration, analysis, and the like of the sample in the microchannel.

  In the microfluidic device, a micropump is provided for feeding a sample in the microchannel. For example, Patent Document 1 discloses a micropump using a photoresponsive gas generating material containing a photoacid generator and an acid stimulating gas generator. Patent Document 1 describes that the photoresponsive gas generating material is in the form of tablets, fine particles, or films.

JP 2010-89259 A

  In Patent Document 1, when the photoresponsive gas generating material is in the form of a film, the photoresponsive gas generating material is cast on the PET film and dried to produce gas on the PET film. A material layer is formed. In this manufacturing method, in general, the thickness of the gas generating material layer in the region not irradiated with light is the same as the thickness of the gas generating material layer in the region irradiated with light.

  When a gas generating material layer having such a thickness is formed, a large amount of gas generating agent is used even in a region where light is not irradiated, although gas is hardly generated in a region where light is not irradiated. Therefore, there is a problem that the usage rate of the gas generating agent in the entire gas generating material layer is low.

  On the other hand, in the manufacturing method described in Patent Document 1, when the total thickness of the gas generating material layer is reduced in order to reduce the total content of the gas generating agent, the gas generating material layer is irradiated with light. The amount of generated gas is reduced.

  In addition, when the thickness of the entire gas generating material layer is reduced, in order to increase the amount of gas generated from the gas generating material layer, the content of the gas generating agent contained in the gas generating material layer may be increased. Conceivable. However, when the content of the gas generating agent is increased, the adhesive force on the surface of the gas generating material layer is lowered. For this reason, when the gas generating material layer is affixed to the adhesion target member, the gas generating material layer is easily peeled from the adhesion target member.

  An object of the present invention is to provide a gas generating tape capable of increasing the usage rate of a photo- or heat-responsive gas generating agent. Moreover, this invention provides a micropump provided with the said gas generating tape.

  According to a wide aspect of the present invention, a base film having a first recess on the first surface side, and the first film on the first surface are disposed so as to include the inside of the first recess. And a gas generating tape comprising a gas generating material layer containing a light or heat-responsive gas generating agent and a binder resin.

  In a specific aspect of the gas generating tape according to the present invention, the photo- or heat-responsive gas generating agent contains an azo compound or an azide compound.

  In a specific aspect of the gas generating tape according to the present invention, the gas generating tape is disposed on a second surface opposite to the first surface of the base film, and generates a heat. The heat generating material layer containing is provided.

  On the specific situation with the gas generating tape which concerns on this invention, the said base film has a 2nd recessed part in the said 2nd surface side, and on the said 2nd surface of the said base film, the said 2nd The heat generating material layer is disposed so as to include the inside of the recess.

  On the specific situation with the gas generating tape which concerns on this invention, the said base film has two or more said 1st recessed parts.

  On the specific situation with the gas generating tape which concerns on this invention, the said base film has a base film main body and the 1st base film member which has a through-hole, The said through-hole of the said 1st base film member Thus, the first concave portion is formed.

  According to a wide aspect of the present invention, the gas generating tape includes the above-described gas generating tape and a base material on which a microchannel is formed, and the gas generating tape supplies gas generated in the gas generating tape to the microchannel. A micropump is provided that is arranged as described.

  The gas generating tape according to the present invention is disposed on the first surface of the base film so as to include the inside of the first recess, the first film having a first recess on the first surface side. And a gas generating material layer containing a light or heat-responsive gas generating agent and a binder resin, so that gas is selectively generated efficiently from the gas generating material layer located in the first recess portion. be able to. For this reason, the usage rate of the light or heat-responsive gas generating agent can be increased.

FIG. 1 is a cross-sectional view showing a gas generating tape according to a first embodiment of the present invention. FIGS. 2A and 2B are cross-sectional views taken along lines II and II-II of the gas generating tape shown in FIG. FIG. 3 is an exploded perspective view of a base film used in the gas generating tape shown in FIG. FIG. 4 is a sectional view showing a gas generating tape according to the second embodiment of the present invention. 5A to 5C are cross-sectional views showing a base film used for the gas generating tape shown in FIG. FIG. 6 is a sectional view showing a gas generating tape according to a third embodiment of the present invention. 7A and 7B are cross-sectional views showing a base film used for the gas generating tape shown in FIG. FIG. 8 is a sectional view showing a gas generating tape according to the fourth embodiment of the present invention. FIG. 9 is a cross-sectional view showing a gas generating tape according to a fifth embodiment of the present invention. FIGS. 10A to 10C are cross-sectional views showing a base film used for the gas generating tape shown in FIG. FIGS. 11A and 11B are sectional views showing a gas generating tape according to a sixth embodiment of the present invention. 12 (a) and 12 (b) are cross-sectional views for explaining a method of shaping a recess in the base film. FIG. 13 is a cross-sectional view schematically showing an example of a micropump using the gas generating tape shown in FIG. 14A to 14C are schematic cross-sectional views for explaining a modification of the micropump.

  Hereinafter, an example of the preferable form which implemented this invention is demonstrated. However, the following embodiment is merely an example. The present invention is not limited to the following embodiments.

  The drawings referred to in the embodiments are schematically described, and the ratio of the dimensions of the objects drawn in the drawings may be different from the ratio of the dimensions of the actual objects. The specific ratio of the dimensions of the object should be determined in consideration of the following explanation.

  FIG. 1 is a cross-sectional view showing a gas generating tape according to a first embodiment of the present invention. 2A is a cross-sectional view taken along line II in FIG. 1, and FIG. 2B is a cross-sectional view taken along line II-II in FIG.

  In FIG. 1, the gas generating tape 1 includes a base film 11, a gas generating material layer 12, a first release film 13, a heat generating material layer 14, and a second release film 15.

  The base film 11 has the 1st recessed part 11a in the 1st surface (one surface) side. The base film 11 has the 2nd recessed part 11b in the 2nd surface (other surface) side opposite to the said 1st surface side.

  The second recess 11b is provided at a position corresponding to the first recess 11a. The first recess 11a and the second recess 11b are opposed to each other.

  As shown in an exploded perspective view of the base film 11, the base film 11 includes a base film body 11A, a first base film member 11B, and a second base film member 11C. The first base fill member 11 </ b> B is laminated on the base film body 11 </ b> A on the first surface side of the base film 11. The second base fill member 11 </ b> C is laminated on the base film body 11 </ b> A on the second surface side of the base film 11. Therefore, the base film 11 has a structure in which the first base film member 11B, the base film main body 11A, and the second base film member 11C are laminated in this order.

  The base film 11 can be obtained by preparing a first base film member 11B, a base film main body 11A, and a second base film member 11C and bonding them together. The first base film member 11B, the base film main body 11A, the base film main body 11A, and the second base film member 11C may be bonded together by lamination (melt processing) or ultrasonic processing, and are bonded using an adhesive. May be combined.

  The first and second base film members 11B and 11C can be obtained by forming the through holes 11Ba and 11Ca by punching or the like.

  The first base film member 11B has a plurality of circular through holes 11Ba. A plurality of circular first recesses 11a are formed by the plurality of through holes 11Ba of the first base film member 11B. The depth of the first recess 11a is the same as the thickness of the first base film member 11B. By stacking and using the base film body 11A and the first base film member 11B, the depth of the first recess 11a can be controlled with high accuracy. For this reason, the generation amount of the gas generated from the gas generating material layer 12 in the first concave portion 11a can be controlled with high accuracy.

  The second base film member 11C has a plurality of circular through holes 11Ca. A plurality of circular second recesses 11b are formed by the plurality of through holes 11Ca of the second base film member 11C. The depth of the second recess 11b is the same as the thickness of the second base film member 11C. By stacking and using the base film body 11A and the second base film member 11C, the depth of the second recess 11b can be controlled with high accuracy. For this reason, the amount of heat generated from the heat generating material layer 14 in the second recess 11b can be controlled with high accuracy.

  The through hole 11Ca is provided at a position corresponding to the through hole 11Ba. The through hole 11Ba and the through hole 11Ca are opposed to each other through the base film body 11A.

  On the first surface of the base film 11, the gas generating material layer 12 is disposed so as to include the inside of the first recess 11a. The gas generating material layer 12 can generate a gas. The gas generating material layer 12 is disposed on the first surface of the base film 11 in the region R1 where the first recess 11a is formed and the region R2 where the first recess 11a is not formed. Yes. In the region R2 where the first concave portion 11a is not formed, the gas generating material layer 12 disposed on the first surface of the base film 11 can be adhered to the adhesion target member. For this reason, in area | region R2 in which the 1st recessed part 11a is not formed, compared with the case where there is no gas generating material layer 12 on the said 1st surface of the base film 11, from the adhesion | attachment object member of the gas generating tape 1 Peeling can be suppressed.

  The thickness of the gas generating material layer 12 in the region R1 where the first recess 11a is formed is larger than the thickness of the region R2 of the gas generating material layer 12 where the first recess 11a is not formed. For this reason, in the area | region in which the 1st recessed part 11a of the gas generating material layer 12 is formed, the abundance of the gas generating agent in the thickness direction of the gas generating material layer 12 can be increased. Gas can be efficiently generated only by setting the region R1 in which the first recess 11a is formed as a region to which light or heat stimulation is applied. The light or heat application unit in the light or heat application device is disposed at a position corresponding to the first recess 11a (a position corresponding to the gas generating material layer 12 in the first recess 11a), and light is applied to the gas generating tape 1. Alternatively, a heat stimulus can be applied.

  The gas generating material layer 12 includes a light or heat-responsive gas generating agent and a binder resin. The gas generating material layer 12 is formed using a gas generating material containing a light or heat-responsive gas generating agent and a binder resin. In the gas generating material layer 12, gas can be generated by light or heat stimulation. Details of the light or heat-responsive gas generating agent and the binder resin will be described later.

  When the gas generating material layer 12 includes a gas generating agent having photoresponsiveness and thermal responsiveness, the gas generating material layer 12 can generate gas in multiple stages. That is, in the gas generating material layer 12, gas is generated by light stimulation and then gas is generated by heat stimulation, or gas is generated by heat stimulation and then gas is generated by light stimulation. can do.

  On the second surface of the base film 11, the heat generating material layer 14 is arranged so as to include the inside of the second recess 11b. In the heat generating material layer 14, heat can be generated. The heat generating material layer 14 is disposed on the second surface of the base film 11 in the region R3 where the second recess 11b is formed and the region R4 where the second recess 11b is not formed. Yes. In the region R4 where the second recess 11b is not formed, the heat generating material layer 14 disposed on the second surface of the base film 11 can be bonded to the bonding target member. For this reason, in area | region R4 in which the 2nd recessed part 11b is not formed, compared with the case where there is no heat generating material layer 14 on the said 2nd surface of the base film 11, it is from the adhesion | attachment object member of the gas generating tape 1. Peeling can be suppressed.

  The thickness of the heat generating material layer 14 in the region R3 where the second recess 11b is formed is thicker than the thickness of the region R4 of the heat generating material layer 14 where the second recess 11b is not formed. For this reason, in the area | region R3 in which the 2nd recessed part 11b of the heat generating material layer 14 is formed, the abundance of the compound which generate | occur | produces the heat in the thickness direction of the heat generating material layer 14 can be increased. If the heat generation layer 14 in the region R3 where the second recess 11b is formed is a region to which a stimulus for generating heat is applied, heat can be generated efficiently. When the gas generating material layer 12 includes a gas generating agent having heat responsiveness, gas can be generated in the gas generating material layer 12 by stimulation of heat generated from the heat generating material layer 14. The heat application part in the heat application device is arranged at a position corresponding to the second recess 11b (position corresponding to the heat generating material layer 14 in the second recess 11b) to give heat stimulation to the gas generating tape 1. can do.

  The heat generating material layer 14 includes a compound that generates heat. The heat generating material layer 14 is formed using a heat generating material containing a compound that generates heat. The heat generating material layer 14 may not be used. Details of the heat generating compound will be described later.

  A first release film 13 is disposed on the surface of the gas generating material layer 12 opposite to the base film 11 side. The surface of the gas generating material layer 12 is protected by the first release film 13. A second release film 15 is disposed on the surface of the heat generating material layer 14 opposite to the base film 11 side. The surface of the heat generating material layer 14 is protected by the second release film 15.

  In the gas generating tape 1, the first release film 13 and the second release film 14 are used, but the first release film 13 may not be used, and the second release film 14 may not be used. Also good.

  FIG. 4 is a sectional view showing a gas generating tape according to the second embodiment of the present invention.

  In the gas generating tape 2 shown in FIG. 4, a first release film 13, a gas generating material layer 12, a base film 21, a heat generating material layer 14, and a second release film 15 are laminated in this order. ing. The gas generating tape 1 and the gas generating tape 2 are different in the base films 11 and 21 used.

  FIG. 5A is a cross-sectional view of the base film 21 shown in FIG. 5B is a cross-sectional view taken along the line II in FIG. 5A, and FIG. 5C is a cross-sectional view taken along the line II-II in FIG. As shown in FIGS. 5A to 5C, in the base film 21, the first base film member 11B, the base film main body 11A, and the second base film member 11C shown in FIG. 3 are integrated. And has first and second recesses 21a and 21b on both sides. The base film 21 is shaped using the shaping roll 61 as shown in FIG. 12 (a), or the shaping die 62 is used as shown in FIG. 12 (b). The film A surface can be easily obtained by die pressing. The base film 11 and the base films 22 and 23 described later can be obtained in the same manner. In FIGS. 12 (a) and 12 (b), only one side is shaped, but both sides may be shaped at once using a pair of shaping rolls or a pair of shaping dies.

  FIG. 6 is a sectional view showing a gas generating tape according to the third embodiment of the present invention.

  In the gas generating tape 3 shown in FIG. 6, a first release film 13, a gas generating material layer 12, a base film 22, a heat generating material layer 31, and a second release film 15 are laminated in this order. ing. The gas generating tape 1 and the gas generating tape 3 are different in the base films 11 and 22 used. In addition, since the gas generating tape 1 and the gas generating tape 3 are different in the base films 11 and 22 used, the shapes of the heat generating material layers 14 and 31 are different. The heat generating material layer 31 has a uniform thickness over the entire surface on the second surface side of the base film 22.

  FIG. 7A is a sectional view of the base film 22 shown in FIG. FIG.7 (b) is sectional drawing which follows the II line | wire in Fig.7 (a). As shown in FIGS. 7A and 7B, the base film 22 has a structure in which the first base film member 11B and the base film body 11A shown in FIG. 3 are integrated, and FIG. It has a structure that does not use the second base film member 11C shown, has a first recess 22a only on one side, and does not have a second recess. When using the base film 22, it is preferable to use a heat generating material layer, but it is not necessary to use it.

  FIG. 8 is a sectional view showing a gas generating tape according to the fourth embodiment of the present invention.

  The gas generating tape 4 shown in FIG. 8 is configured in the same manner as the gas generating tape 3 shown in FIG. 6 except that the heat generating material layer 31 and the second release film 15 are not provided.

  Accordingly, the gas generating tape 4 includes the first release film 13, the gas generating material layer 12, and the base film 22 laminated in this order.

  FIG. 9 is a sectional view showing a gas generating tape according to the fifth embodiment of the present invention.

  In the gas generating tape 5 shown in FIG. 9, the first release film 13, the gas generating material layer 41, the base film 23, the heat generating material layer 32, and the second release film 15 are laminated in this order. ing. The gas generating tape 1 and the gas generating tape 5 are different in the base films 11 and 23 used. Further, since the base films 11 and 23 used are different between the gas generating tape 1 and the gas generating tape 5, the shapes of the gas generating material layers 12 and 41 are different, and the shapes of the heat generating material layers 14 and 32 are different. Is different.

  FIG. 10A is a sectional view of the base film 23 shown in FIG. 10B is a cross-sectional view taken along line II in FIG. 10A, and FIG. 10C is a cross-sectional view taken along line II-II in FIG. As shown in FIGS. 10A to 10C, the base film 23 has linear first and second recesses 23a and 23b extending in two directions. In the base film 23, the first and second recesses 23a and 23b are respectively a first direction orthogonal to the thickness direction of the base film 23, and a second direction orthogonal to the thickness direction of the base film 23 and the first direction. Extending in the direction. A plurality of first recesses 23a are arranged at equal intervals along the first direction. A plurality of second recesses 23b are arranged at equal intervals along the second direction. However, the first and second recesses 23 a and 23 b do not reach the end of the base film 23.

  The gas generating tape 5 has a gas generating material layer 41 on the first surface of the base film 23 so as to include the inside of the linear first concave portion 23 a extending in two directions. The gas generating tape 5 has a heat generating material layer 32 on the second surface of the base film 23 so as to include the inside of the second linear recess 23b extending in two directions.

  In the gas generating tape 5, for example, gas or heat can be efficiently generated by applying light or heat stimulation at the intersection of the first and second recesses 23a and 23b extending in two directions.

  11A and 11B are sectional views showing a gas generating tape according to a sixth embodiment of the present invention. FIG.11 (b) is sectional drawing of the gas generating tape which follows the II line | wire in Fig.11 (a).

  As in the gas generating tape 6 shown in FIGS. 11A and 11B, a heating wire 51 may be used to generate heat by applying heat to the gas generating material layer 41. The heating wire 51 is disposed in the first recess 22a and extends to the outside from the first recess 22a. The gas generating material layer 41 may be disposed so as to be in contact with such a heating wire 51. The heating wire 51 can be arrange | positioned on the surface of the base film 22, for example by pattern printing.

  The shape of the first and second recesses is not particularly limited. The first and second recesses can be formed in an arbitrary shape in the region irradiated with light. The first and second recesses 11a, 11b, 21a, 21b, and 22a and the through holes 11Ba and 11Ca are each circular, but the first and second recesses and the through hole are each in other shapes such as a polygon. It may be a shape. Further, the first and second recesses 11a, 11b, 21a, 21b, and 22a and the through holes 11Ba and 11Ca are provided in a plurality of points, but the first and second recesses and the through hole are respectively provided. , May be provided linearly. Since the usage rate of the gas generating agent can be increased, each of the first and second recesses and the through hole is preferably provided in a dot shape, and a plurality is preferably provided. The base film preferably has a plurality of first recesses, and preferably has a plurality of second recesses.

  The material of the base film is not particularly limited. Polyester resin such as ethylene-vinyl acetate copolymer resin, polyurethane resin, polyethylene terephthalate resin, polytetrafluoroethylene resin, polyethylene resin, polypropylene resin, polymethylpentene resin, polyvinyl Examples thereof include polyolefin resins such as acetate resin, polyvinyl chloride resin and polyimide resin. The base film preferably has gas barrier properties. For this reason, it is desirable to appropriately select a material excellent in gas barrier properties as the material of the base film.

  The material of the said 1st, 2nd peeling film is not specifically limited, Polyester resin, such as ethylene-vinyl acetate copolymer resin, polyurethane resin, and polyethylene terephthalate resin, polytetrafluoroethylene resin, polyethylene resin, polypropylene resin, Examples thereof include polyolefin resins such as polymethylpentene resin and polyvinyl acetate resin, polyvinyl chloride resin, polyimide resin, and release paper. The surfaces of the first and second release films may be subjected to a release treatment. Furthermore, a release agent such as silicone may be applied to the surfaces of the first and second release films in order to improve the peelability.

  The thickness of the gas generating tape is not particularly limited. The thickness of the gas generating tape is preferably 5 μm or more, more preferably 10 μm or more, preferably 5 mm or less, more preferably 500 μm or less.

  The thickness of the base film is not particularly limited. The thickness of the base film is preferably 10 μm or more, more preferably 25 μm or more, preferably 1000 μm or less, more preferably 100 μm or less.

  The thickness of the gas generating material layer located on the surface of the base film where there is no first recess is preferably 10 μm or more, more preferably 25 μm or more, preferably 1000 μm or less, more preferably 100 μm or less. When the thickness is not less than the above lower limit and not more than the above upper limit, the usage rate of the gas generating agent and the adhesive force of the gas generating tape on the gas generating material layer side can be improved in a balanced manner.

  The thickness of the heat generating material layer positioned on the surface of the base film where there is no second recess is preferably 10 μm or more, more preferably 25 μm or more, preferably 1000 μm or less, more preferably 100 μm or less. When this thickness is not less than the above lower limit and not more than the above upper limit, the usage rate of the compound that generates heat and the adhesive force on the heat generating material layer side of the gas generating tape can be improved in a balanced manner.

  The depth of the 1st, 2nd recessed part of the said base film is not specifically limited. In the case where there are the first recess and the second recess, the depths of the first recess and the second recess are preferably when the thickness of the base film in the portion without the recess is T. Is 0.05T or more, more preferably 0.1T or more, still more preferably 0.2T or more, preferably less than 0.5T, more preferably 0.4T or less. In addition, when there is only the first recess and there is no second recess, the depth of the first recess is preferably 0 when the thickness of the base film in the portion without the recess is T. .05T or more, more preferably 0.1T or more, still more preferably 0.2T or more, particularly preferably 0.4T or more, preferably 0.95T or less, more preferably 0.9T or less, still more preferably 0.8T or less. Especially preferably, it is 0.6 T or less. When the depth of the first recess and the second recess is not less than the lower limit and not more than the upper limit, the usage rate of the gas generating agent and the usage rate of the compound that generates heat, and the adhesive strength of the gas generating tape, Can be improved in a well-balanced manner.

  FIG. 13 is a cross-sectional view schematically showing an example of a micropump using the gas generating tape shown in FIG.

  A micropump 81 shown in FIG. 13 includes a plate-like base material 82. Examples of the material constituting the substrate 82 include resin, glass, and ceramics. Examples of the resin constituting the substrate 82 include organic siloxane compounds, polymethacrylate resins, and polyolefin resins. Examples of the polyolefin resin include cyclic polyolefin resins. Specific examples of the organosiloxane compound include polydimethylsiloxane (PDMS) and polymethylhydrogensiloxane.

  In the base material 82, a micro flow path 82b opened in the main surface 82a is formed. The “microchannel” refers to a channel formed in a shape and dimension that develops a so-called micro effect in the liquid flowing through the microchannel. Specifically, the term “microchannel” means that the liquid flowing through a microchannel is strongly affected by surface tension and capillary action, and has a different shape from that of a liquid flowing through a normal channel. It refers to the flow path that is formed.

  The gas generating tape 1 is affixed on the main surface 82a. In FIG. 13, the gas generating tape 1 is schematically shown for convenience of illustration. The opening of the micro flow path 82b is covered with the gas generating tape 1. For this reason, when the external stimulus of light or heat is applied to the gas generating tape 1, the gas generated from the gas generating tape 1 is guided to the micro flow path 82b.

  A light or heat application device 84 is used to apply light or heat to the gas generating tape 1. By applying light or heat from the light or heat applying device 84, gas can be generated from the gas generating agent contained in the gas generating tape 1.

  A plurality of light or heat application portions in the light or heat application device 84 are arranged at positions corresponding to the first concave portions 11a (positions corresponding to the gas generating material layer 12 in the first concave portions 11a), and the gas generating tape 1 If a stimulus of light or heat is applied to the gas, gas can be efficiently generated from the gas generating tape 1.

  As shown to Fig.14 (a), when the gas generating material layer 12 in a gas generating tape generate | occur | produces gas by irradiation of LED, you may use LED irradiation apparatus 84A as a light provision apparatus. A plurality of LED irradiation devices may be used, and an LED irradiation device having a plurality of LED irradiation units may be used. A plurality of LED irradiation devices or LED irradiation units may be arranged at positions corresponding to the first recesses 22a. In this case, by irradiating the LED in the direction indicated by the arrow Y1 from the LED irradiation device 84A, the gas generated from the gas generating material layer 12 is efficiently guided to the micro flow path arranged in the direction indicated by the arrow Z1. be able to.

  As shown in FIG. 14B, when the gas generating material layer 12 in the gas generating tape is a layer that generates gas by thermal decomposition by laser, or when the gas generating tape has the heat generating material layer 14, As the light or heat application device, a laser irradiation device 84B may be used. A plurality of laser irradiation apparatuses may be used, and a laser irradiation apparatus having a plurality of laser irradiation units may be used. A plurality of laser irradiation devices or laser irradiation units may be arranged at positions corresponding to the first recesses 11a. In this case, by irradiating the laser in the direction indicated by the arrow Y2 from the laser irradiation device 84B, the gas generated from the gas generating material layer 12 is efficiently guided to the microchannel disposed in the direction indicated by the arrow Z2. be able to. The heat generating material layer preferably contains a compound that generates heat, which will be described later, such as metal particles and carbon nanotubes.

  As shown in FIG. 14 (c), when the gas generating tape has the heat generating material layer 14 that generates heat by contact with water, the water flowing in the direction indicated by the arrow Y3 from the water inlet is heated. The thin tube structure 91 having a thin tube through which water passes may be disposed on the surface opposite to the base film 11 side of the heat generating material layer 14 so as to reach the generating material layer 14.

  When the gas generating material layer in the gas generating tape generates gas by applying heat, a heat applying irradiation device may be used as the light or heat applying device. A plurality of heat applying portions in the heat applying device may be arranged at positions corresponding to the first concave portions 11a.

  As the light or heat irradiation device, the aforementioned heating wire or the like may be used, or the heating wire may be incorporated in the gas generating tape.

  The gas generating tape 1 is covered with a gas barrier layer 83. The gas barrier layer 83 prevents the gas generated in the gas generating tape 1 from flowing out to the side opposite to the main surface 82a, and is efficiently supplied to the microchannel 82b. For this reason, the gas barrier layer 83 is preferably a layer having low permeability of the gas generated in the gas generating tape 1. The gas barrier layer 83 may not be used when the base film has gas barrier properties.

  Examples of the material constituting the gas barrier layer include polyacrylic resin, polyolefin resin, polycarbonate resin, vinyl chloride resin, ABS resin, polyethylene terephthalate (PET) resin, nylon resin, urethane resin, polyimide resin, and glass.

  The thickness of the gas barrier layer can be appropriately changed depending on the material of the gas barrier layer and the like, and is not particularly limited. The thickness of the gas barrier layer is preferably 10 μm or more, more preferably 25 μm or more, preferably 1 mm or less, more preferably 100 μm or less. When transmitting light, the gas barrier layer is preferably a layer in which attenuation of light in the ultraviolet region does not easily occur.

  Hereinafter, the details of the gas generating agent and binder resin used in the gas generating material layer will be described. The details of the heat generating compound used in the heat generating material layer will be described.

(Gas generating agent)
The gas generant used in the present invention has photoresponsiveness or thermal responsiveness, and is an optically or thermoresponsive gas generant. The gas generating agent may have photoresponsiveness, may have thermal responsiveness, may include a photoresponsive gas generating agent, and may include a thermoresponsive gas generating agent. May be. The gas generating agent preferably contains an azo compound or an azide compound. The gas generating agent may be an azo compound or an azide compound. As for the said gas generating agent, only 1 type may be used and 2 or more types may be used together.

  Specific examples of the azo compound used as the gas generating agent include, for example, 2,2′-azobis (N-cyclohexyl-2-methylpropionamide), 2,2′-azobis [N- (2-methylpropyl). ) -2-methylpropionamide], 2,2′-azobis (N-butyl-2-methylpropionamide), 2,2′-azobis [N- (2-methylethyl) -2-methylpropionamide], 2,2′-azobis (N-hexyl-2-methylpropionamide), 2,2′-azobis (N-propyl-2-methylpropionamide), 2,2′-azobis (N-ethyl-2-methyl) Propionamide), 2,2′-azobis {2-methyl-N- [1,1-bis (hydroxymethyl) -2-hydroxyethyl] propionamide}, 2,2 -Azobis {2-methyl-N- [2- (1-hydroxybutyl)] propionamide}, 2,2'-azobis [2-methyl-N- (2-hydroxyethyl) propionamide], 2,2 ' -Azobis [N- (2-propenyl) -2-methylpropionamide], 2,2'-azobis [2- (5-methyl-2-imidazolin-2-yl) propane] dihydrochloride, 2,2 ' -Azobis [2- (2-imidazolin-2-yl) propane] dihydrochloride, 2,2'-azobis [2- (2-imidazolin-2-yl) propane] disulfate dihydrolate, 2,2 '-Azobis [2- (3,4,5,6-tetrahydropyrimidin-2-yl) propane] dihydrochloride, 2,2'-azobis {2- [1- (2 Hydroxyethyl) -2-imidazolin-2-yl] propane} dihydrochloride, 2,2′-azobis [2- (2-imidazolin-2-yl) propane], 2,2′-azobis (2-methylpropion) Amidyne) hydrochloride, 2,2′-azobis (2-aminopropane) dihydrochloride, 2,2′-azobis [N- (2-carboxyacyl) -2-methyl-propionamidyne], 2,2 '-Azobis {2- [N- (2-carboxyethyl) amidyne] propane}, 2,2'-azobis (2-methylpropionamidooxime), dimethyl-2,2'-azobis (2-methylpropionate) ), Dimethyl-2,2′-azobisisobutyrate, 4,4′-azobis (4-cyancarbonic acid), 4, 4'-azobis (4-cyanopentanoic acid), 2,2'-azobis (2,4,4-trimethylpentane) and the like. These azo compounds generate nitrogen gas by receiving an external stimulus such as light or heat in a specific wavelength range.

  The azo compound is extremely easy to handle because it does not generate gas upon impact. The azo compound does not cause a chain reaction to generate a gas explosively. If the said azo compound is used, generation | occurrence | production of gas can also be interrupted by interrupting light irradiation. For this reason, the amount of gas generation can be easily controlled by using the azo compound as the gas generating agent.

  Examples of the azide compound used as the gas generating agent include sodium azide, a glycidyl azide polymer, an azide compound having a sulfonyl azide group or an azidomethyl group. The azide compound preferably has a sulfonyl azide group or an azidomethyl group. The azide compound preferably has a sulfonyl azide group, and preferably has an azidomethyl group.

  Examples of gas generating agents other than azo compounds and azide compounds include sodium hydrogen carbonate, tetrazoles, dinitrosopentamethylenetetramine, azodicarbonamide, p, p'-oxybisbenzenesulfonylhydrazide, hydrazodicarbonamide, and the like. It is done. These are thermoresponsive gas generants.

  In the gas generating material layer, the content of the gas generating agent is preferably 10% by mass or more, more preferably 15% by mass or more, still more preferably 20% by mass or more, preferably 90% by mass or less, more preferably 75%. It is not more than mass%, more preferably not more than 60 mass%.

(Binder resin)
By including the binder resin in the gas generating material layer, it becomes easy to form the gas generating material layer using the gas generating material containing the gas generating agent. Further, the gas generating material layer can be bonded to the bonding target member. Further, the gas generating agent can be firmly held in the gas generating material layer. The heat generating material layer may also contain a binder resin. As for the said binder resin, only 1 type may be used and 2 or more types may be used together.

  The said bainter resin is not specifically limited. As the binder resin, an appropriate binder resin capable of holding the gas generating agent in the gas generating material layer is used. As the binder resin, polymer materials such as poly (meth) acrylate, polyester, polyethylene, polypropylene, polystyrene, polyether, polyurethane, polycarbonate, polyamide, and polyimide can be used. A copolymer of monomers constituting these polymer materials may be used, or these polymer materials may be used in combination. Especially, since the generation efficiency of gas becomes still higher, it is preferable that the said binder resin is the said poly (meth) acrylate. That is, the binder resin is preferably a (meth) acrylic polymer. The (meth) acrylic polymer includes a (meth) acrylic copolymer.

  The binder resin preferably has adhesiveness. When the binder resin has adhesiveness, the gas generating material layer can be provided with adhesiveness. For this reason, the gas generating material layer can be easily disposed on the micropump. For example, the gas generating material layer having adhesiveness can be easily attached to the substrate surface of the micropump or the wall surface inside the substrate. It is preferable that the outer surfaces of the gas generating material layer and the heat generating material layer have adhesive properties so that the gas generating tape can be attached to the member to be bonded.

  The content of the binder resin with respect to 100 parts by mass of the gas generating agent is preferably 10 parts by mass or more, more preferably 20 parts by mass or more, still more preferably 30 parts by mass or more, and preferably 300 parts by mass or less. Preferably it is 200 mass parts or less, More preferably, it is 150 mass parts or less.

(Compound that generates heat)
Examples of the compound that generates heat include calcium oxide, iron, metal particles, carbon nanotubes, and carbon compounds such as fullerene. When water is added to calcium oxide, an exothermic reaction occurs. Iron generates heat by oxidation. Only 1 type may be used for the said compound which generate | occur | produces the heat, and 2 or more types may be used together. Metal fine particles, carbon nanotubes, and the like may be included in the gas generation layer and heated by a laser or the like.

  In the heat generating material layer, the content of the heat generating compound is preferably 10% by mass or more, more preferably 15% by mass or more, still more preferably 20% by mass or more, and 100% by mass or less, preferably 90% by mass. % Or less, more preferably 75% by mass or less, and still more preferably 60% by mass or less.

1, 2, 3, 4, 5, 6 ... Gas generating tape 11 ... Base film 11a ... First recess 11b ... Second recess 11A ... Base film body 11B ... First base film member 11Ba ... Through hole 11C ... 2nd base film member 11Ca ... Through-hole 12 ... Gas generating material layer 13 ... 1st peeling film 14 ... Heat generating material layer 15 ... 2nd peeling film 21, 22, 23 ... Base film 21a, 22a, 23a ... 1st recessed part 21b, 23b ... 2nd recessed part 31, 32 ... Heat generating material layer 41 ... Gas generating material layer 51 ... Heating wire 61 ... Shaping roll 62 ... Shaping die 81 ... Micro pump 82 ... Base material 82a ... Main surface 82b ... Micro flow path 83 ... Gas barrier layer 84 ... Light or heat application device 84A ... LED irradiation device 84B ... Laser irradiation device 91 ... Thin tube structure part A ... Fill R1 ... first concave portion is a region R2 ... first concave portion formed not formed region R3 ... second recess a region R4 ... second concave portion formed not formed region

Claims (7)

A base film having a first recess on the first surface side;
A gas provided on the first surface of the base film so as to include the inside of the first recess and a gas generating material layer containing a light or heat-responsive gas generating agent and a binder resin. Generating tape.   The gas generating tape according to claim 1, wherein the light or heat-responsive gas generating agent comprises an azo compound or an azide compound.   The gas generating tape according to claim 1, further comprising a heat generating material layer that is disposed on a second surface opposite to the first surface of the base film and includes a compound that generates heat. . The base film has a second recess on the second surface side;
The gas generating tape according to claim 3, wherein the heat generating material layer is disposed on the second surface of the base film so as to include the inside of the second recess.   The gas generating tape according to claim 1, wherein the base film has a plurality of the first recesses. The base film has a base film main body and a first base film member having a through hole,
The gas generating tape according to any one of claims 1 to 5, wherein the first recess is formed by the through hole of the first base film member. The gas generating tape according to any one of claims 1 to 6,
And a substrate on which a microchannel is formed,
The gas generation tape is a micropump arranged so that gas generated in the gas generation tape is supplied to the microchannel.

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