TWI573751B - An adhesive tape, a connecting tape for a carrier tape, a connecting method for a carrier tape, and a connecting belt - Google Patents

Description

Adhesive tape, film for connection of carrier tape, connection method of carrier tape and connection carrier tape

The present invention relates to an adhesive tape for connecting an end portion of a carrier tape for supplying an electronic component to an electronic component mounting machine to an end portion of another carrier tape, a film for connection of a carrier tape including the adhesive tape, and the use of the connection The connecting method of the carrier tape of the film and the connecting carrier tape.

The small electronic component mounted on the printed circuit board by the electronic component mounting machine is mainly transported, stored, and supplied by the following carrier tape: by punching the paper substrate, placing the small electronic component into the obtained hole, and a carrier tape formed by bonding the lower tape and the upper cover tape to the two surfaces of the substrate; or by forming a groove on the substrate such as polystyrene resin, placing the small electronic component in the groove portion, and utilizing The upper cover tape is covered with an embossed carrier tape.

At the time of shipment of the wafer component, the carrier tape is supplied in a state of being wound around the reel (1 reel has a length of about 20 m). The upper cover tape is peeled off, and the enclosed electronic components are taken out one by one and installed. Then, after installing all the electronic components, each reel is switched to a reel wrapped with a new carrier tape. However, if the installation operation is interrupted during the switching, the work efficiency is significantly reduced, so the following method is adopted, which is a new bearer. The end of the belt is connected to the end of the carrier tape that ends the installation work, and the carrier tape is switched without interrupting the installation work.

Previously, metal clips were used to connect new and old carrier tapes. However, in the case of using a metal clip, there is a problem in that it is necessary to perform a sorting and disposal process of the metal clip and a connection work using a dedicated jig.

Therefore, as a method for solving the above problem, Patent Document 1 discloses a method in which a portion of a carrier tape to which an upper cover tape is attached is bonded to a portion other than the other adhesive tape, and is not hindered. The upper cover tape is connected to the two carrier tapes in the case of peeling from the substrate. However, in order to connect the two carrier tapes without impeding the peelability of the upper cover tape, it is necessary to strictly adjust the bonding position, and since it is difficult to mechanize, manual work is performed by a person. Moreover, in order to quickly adhere to an accurate position, the work must be very skilled, and the familiarity of the worker has a large influence on the work efficiency, so that it is difficult to obtain a fixed work efficiency. Further, when the adhesive tape is subjected to a process of forming a broken line or the like in order to facilitate positioning, the work efficiency is improved to some extent, but the manufacturing cost of the adhesive tape is increased, and the adhesive tape becomes expensive.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2002-187210

Accordingly, it is an object of the present invention to provide an adhesive tape which can be easily attached to a carrier tape connecting portion without impeding the peeling of the cover tape on the surface of the carrier tape without strict positioning.

Another object of the present invention is to provide a film for connection comprising a carrier tape of the above adhesive tape.

Still another object of the present invention is to provide a joining method of a carrier tape using the above-described film for connecting a carrier tape.

Another object of the present invention is to provide a connecting carrier tape that is connected by the above-described connection method of the carrier tape.

The inventors of the present invention conducted intensive studies to solve the above problems, and found that the tear strength in the first direction of the face and the tear strength in the second direction orthogonal to the first direction are in the second direction. When the tear strength is set to 1, the adhesive tape having a tear strength of less than 0.75 in the first direction has excellent cracking property in the first direction of the surface, so that the easy tearing direction of the adhesive tape is aligned with the upper cover tape. When it is bonded in the peeling direction, it is attached so as to be wound around the carrier tape, and even if a portion of the carrier tape to which the upper cover tape is attached is bonded to the other portion by a tape, when the cover tape is peeled off, The peeling of the upper cover tape may cause the portion of the adhesive tape to be adhered to the surface of the upper cover tape to be cracked and peeled off from the surface of the carrier tape together with the upper cover tape, so that the adhesive tape does not inhibit the peelability of the upper cover tape; Cracking without strict positioning; even if it is attached to the approximate position, it does not hinder the peeling of the upper cover tape, and it is not necessary to form a dotted-line slit on the adhesive tape to make the positioning easy, and it is inexpensive. Manufacturing; may be bonded by manual operation, it may also be used for mechanical bonding; and, in the case when the manual work, regardless of whether the skilled worker, can be easily and quickly connected operation. The present invention has been completed based on these findings.

That is, the present invention provides an adhesive tape having a substrate and an adhesive layer formed on one side of the substrate, and the tear strength in the first direction with respect to the face and the first direction orthogonal to the first direction The tear strength in the two directions, when the tear strength in the second direction is set to 1, the tear strength in the first direction is not Up to 0.75.

Preferably, the 180° peeling adhesive force (relative to the polyethylene terephthalate film, peeling temperature: 25° C., peeling speed: 300 mm/min) of the adhesive tape is 1.5 N/10 mm or more and 180°. The peeling adhesion (relative to the paper substrate, peeling temperature: 25 ° C, peeling speed: 300 mm/min) was 1.5 N/10 mm or more.

The thickness of the substrate is preferably from 10 to 100 μm.

Preferably, at least one of the substrate and the adhesive layer is colored.

Moreover, the present invention provides a film for connection of a carrier tape which is obtained by laminating a base film on an adhesive layer of an adhesive tape for a carrier tape including the adhesive tape, and attaching an application tape to a substrate surface. .

Preferably, the 180° peeling adhesive force (relative to the polyethylene terephthalate film, peeling temperature: 25° C., peeling speed: 300 mm/min) of the adhesive tape for the carrier tape connection is 1.5 N/10 mm. As described above, the 180° peeling adhesive force (relative to SUS plate, peeling temperature: 25° C., peeling speed: 300 mm/min) of the transfer tape was 0.02 N/25 mm or more. Furthermore, "SUS" means stainless steel (Steel Use Stainless).

Preferably, at least one side of the side parallel to the second direction of the surface of the adhesive tape for connecting the carrier tape has one or two or more slits extending in the inner direction.

Preferably, the transfer tape has a hole corresponding to the transfer hole of the carrier tape.

The present invention further provides a method for joining a carrier tape, which is a base film for peeling off the film for connection of the carrier tape, and is used for bonding the obtained carrier tape. The tape/repost tape adhesive layer is disposed so that the first direction of the surface of the adhesive tape for the carrier tape is aligned with the longitudinal direction of the carrier tape, and the adhesive layer of the adhesive tape for the carrier tape is oriented toward the carrier tape connection portion. Winding, and then peeling off the tape.

Further, the present invention provides a connection carrier tape which is connected by the above-described connection method of the carrier tape.

When the film for connection of the carrier tape of the present invention is used for the connection of the carrier tape, strict positioning is not required, and even if it is attached to the approximate position, the carrier tape can be connected without hindering the peeling of the upper cover tape, so no matter the operation Whether the person is skilled or not can easily and quickly connect. Moreover, mechanization can also be utilized. Further, when the film for connection of the carrier tape of the present invention is used, the carrier tape can be switched without interrupting the mounting work, so that the work efficiency can be prevented from being lowered, and the mounting work can be continuously performed with excellent workability. Further, since the film for connection of the carrier tape of the present invention does not need to be processed for improving the positioning property, the manufacturing cost can be reduced, and it can be provided at low cost.

[adhesive tape]

The adhesive tape of the present invention has an adhesive layer on one side of the substrate.

Examples of the substrate include polyester (polyethylene terephthalate (PET), polyethylene naphthalate, polybutylene terephthalate, and polybutylene naphthalate. Etc.), polyolefin (polyethylene, polypropylene (PP, Polypropylene), ethylene-propylene copolymer, etc.), polyvinyl alcohol, polyvinylidene chloride, polyvinyl chloride, vinyl chloride-acetic acid Vinyl ester copolymer, polyvinyl acetate, polyamide, polyimine, cellulose, fluorine resin, polyether, polyether decylamine, polyphenylene sulfide, polystyrene resin (polystyrene, etc.) ), polycarbonate, polyether oxime and other plastic substrates.

In the present invention, a substrate such as a polyolefin film (particularly a polypropylene film) or a polyester film is preferably used in terms of easy availability, sufficient strength, and excellent linear cuttability.

Further, for the surface of the substrate, in order to improve the adhesion to the adhesive layer, it is possible to apply a conventional surface treatment such as chromic acid treatment, ozone exposure, flame exposure, high-voltage electric shock exposure, ionizing radiation treatment, etc. using chemical or physical means. The method is oxidized and the like.

Preferably, the substrate of the present invention has a tear strength in a first direction with respect to a surface and a tear strength in a second direction orthogonal to the first direction, and when the tear strength in the second direction is set to 1, The tear strength in the first direction is less than 0.75 (preferably 0.10 or more, not more than 0.75, particularly preferably 0.50 or more and less than 0.75).

Further, the "first direction of the surface" is a direction in which the substrate has tearability, for example, a main direction of extension. The tear strength of the present invention is expressed by the force required for tearing, and the smaller the value, the easier it is to tear. The tear strength of the present invention can be measured by an Elmendorf tear test in accordance with JIS K7128 (1998). When the ratio of the tear strength in the first direction to the tear strength in the second direction is 0.75 or more, the cracking property is insufficient, and when the upper cover tape is peeled off after the carrier tape is attached, the joint portion is used. The peeling is interrupted, making it difficult to perform the installation work continuously.

The ratio of the tear strength in the first direction to the tear strength in the second direction It can be adjusted by controlling the stretching ratio in all directions.

The thickness of the substrate is, for example, preferably about 10 to 100 μm, more preferably about 10 to 50 μm, and most preferably about 10 to 30 μm. When the thickness of the base material is less than the above range, the strength of the adhesive tape is insufficient, and the practicality is impaired. On the other hand, when the thickness of the base material is more than the above range, the cracking property in the first direction toward the surface tends to be lowered, and the carrier tape tends to be entangled. In addition, there is also a deterioration in the mobility of the mounting machine (mounting machine: rack).

Examples of the adhesive (base polymer) constituting the pressure-sensitive adhesive layer of the adhesive tape of the present invention include an acrylic pressure-sensitive adhesive, a rubber-based pressure-sensitive adhesive, and an anthrone-based pressure-sensitive adhesive. These may be used alone or in combination of two or more.

As the acrylic pressure-sensitive adhesive, a polymer obtained by polymerizing a monomer having a (meth)acrylic acid alkyl ester as a main monomer and a binder-modified monomer having improved adhesion is preferably used.

Examples of the main monomer include n-butyl (meth)acrylate, isobutyl (meth)acrylate, second butyl (meth)acrylate, and tert-butyl (meth)acrylate. Ethyl acrylate, isoamyl (meth)acrylate, hexyl (meth)acrylate, heptyl (meth)acrylate, octyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, Isooctyl (meth)acrylate, decyl (meth)acrylate, isodecyl (meth)acrylate, decyl (meth)acrylate, isodecyl (meth)acrylate, eleven (meth)acrylate Alkyl ester, dodecyl (meth)acrylate, tridecyl (meth)acrylate, tetradecyl (meth)acrylate, pentadecyl (meth)acrylate, (a) Base) cetyl acrylate, heptadecyl (meth) acrylate, (meth) acrylate a linear or branched alkyl group having 4 to 20 carbon atoms in an alkyl group such as an alkyl ester, a nonadecyl (meth) acrylate or an amyl (meth) acrylate (methyl) ) alkyl acrylate and the like. In the present specification, the term "(meth)acrylic acid" means "acrylic acid" and/or "methacrylic acid".

Among the above, an alkyl (meth)acrylate having an alkyl group of 4 to 12 carbon atoms is preferred, and 2-Ethyl Hexyl Acrylate (2EHA, 2-Ethyl Hexyl Acrylate) or n-butyl acrylate is more preferred. BA, n-Butyl Acrylate).

The content of the main monomer is preferably 50 to 100% by weight, and more preferably 70 to 100% by weight based on the total amount of the monomer component (100% by weight) constituting the acrylic pressure-sensitive adhesive.

Examples of the functional group-containing monomer include carboxyl group-containing monomers such as (meth)acrylic acid, methylene succinic acid, maleic acid, fumaric acid, crotonic acid, and methacrylic acid. (Also includes an acid anhydride group-containing monomer such as maleic anhydride or methylene succinic anhydride;) hydroxyalkyl (meth) acrylate (for example, 2-hydroxyethyl (meth) acrylate, (methyl) ) 2-hydroxypropyl acrylate, 3-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 6-hydroxyhexyl (meth) acrylate, etc., vinyl alcohol, allyl alcohol, etc. Hydroxyl-containing monomer; mercaptoamine-containing monomer such as (meth)acrylamide; N-methyl(meth)acrylamide, N-ethyl(meth)acrylamide, N , N-dimethyl (meth) acrylamide, N-tert-butyl (meth) acrylamide, N-methylol (meth) acrylamide, N-methoxymethyl (A Acrylamide, N-ethoxymethyl (meth) acrylamide, N-butoxymethyl (meth) acrylamide, N-octyl acrylamide, N-hydroxyethyl propylene N-containing substituted guanamine group monomer such as decylamine; aminoethyl (meth) acrylate, dimethylaminoethyl (meth) acrylate, ( A Amino group-containing monomer such as diethylaminoethyl acrylate, dimethylaminopropyl (meth)acrylate, orthobutylaminoethyl (meth)acrylate; (meth)acrylic acid A glycidyl group-containing monomer such as glycidyl ester or methyl glycidyl (meth)acrylate. Among the above functional group-containing monomers, a carboxyl group-containing monomer is preferred, and acrylic acid (AA, Acrylic acid) is more preferred.

The content of the functional group-containing monomer is preferably less than 20% by weight, more preferably 5% by weight or less, based on the total amount of the monomer component (100% by weight) constituting the acrylic pressure-sensitive adhesive.

The acrylic pressure-sensitive adhesive can be prepared by polymerizing the above monomer components by a known or conventional polymerization method, and examples thereof include a solution polymerization method, an emulsion polymerization method, a bulk polymerization method, and a polymerization method using active energy ray irradiation (activity). Energy ray polymerization method) and the like. Among the above, in terms of transparency, water resistance, cost, and the like, a solution polymerization method and an active energy ray polymerization method are preferred, and a solution polymerization method is more preferred.

In the above solution polymerization, various usual solvents can be used. Examples of such a solvent include esters such as ethyl acetate and n-butyl acetate; aromatic hydrocarbons such as toluene and benzene; aliphatic hydrocarbons such as n-hexane and n-heptane; and cyclohexane and methylcyclohexane. An alicyclic hydrocarbon; an organic solvent such as a ketone such as methyl ethyl ketone or methyl isobutyl ketone. The solvent may be used singly or in combination of two or more.

When the acrylic adhesive is polymerized, a polymerization initiator can be used. The polymerization initiator is not particularly limited, and can be appropriately selected from known or customary ones, and examples thereof include 2,2'-azobisisobutyronitrile and 2,2'-azobis (4). -Methoxy-2,4-dimethylvaleronitrile), 2,2'-azobis(2,4-dimethylvaleronitrile), 2,2'-azobis(2-methylbutyl) Nitrile), 1,1'-azobis(cyclohexane- 1-carbonitrile), 2,2'-azobis(2,4,4-trimethylpentane), dimethyl-2,2'-azobis(2-methylpropionate), etc. Azo-based polymerization initiator; benzamidine peroxide, hydrogen peroxide, tert-butyl, di-tert-butyl peroxide, t-butyl peroxybenzoate, dicumyl peroxide, 1 , peroxide polymerization of 1-bis(t-butylperoxy)-3,3,5-trimethylcyclohexane, 1,1-bis(t-butylperoxy)cyclododecane An oil-soluble polymerization initiator such as a starter. These may be used alone or in combination of two or more. The amount of the polymerization initiator to be used is not particularly limited as long as it can be used as a polymerization initiator.

Further, the acrylic pressure-sensitive adhesive may be crosslinked by adding a crosslinking agent. Examples of the crosslinking agent include an epoxy compound, an isocyanate compound, a metal chelate compound, a metal alkoxide, a metal salt, an amine compound, a ruthenium compound, and an aldehyde compound, and these may be based on an acrylic adhesive. The functional group contained in it is appropriately selected and used. The amount of the crosslinking agent to be used is, for example, about 0.01 to 10 parts by weight, preferably about 0.05 to 5 parts by weight, per 100 parts by weight of the acrylic pressure-sensitive adhesive.

Examples of the rubber-based pressure-sensitive adhesive include natural rubber or various synthetic rubbers. Examples of the above synthetic rubber include polyisoprene rubber, styrene-butadiene (SB) rubber, styrene-isoprene (SI) rubber, and styrene-isoprene-styrene embedded. Segment Copolymer (SIS) rubber, styrene-butadiene-styrene block copolymer (SBS) rubber, styrene-ethylene-butylene-styrene block copolymer (SEBS) rubber, styrene-ethylene- Propylene-styrene block copolymer (SEPS) rubber, styrene-ethylene-propylene block copolymer (SEP) rubber, recycled rubber, butyl rubber, polyisobutylene or modified bodies thereof Wait.

Examples of the above-mentioned anthrone-based pressure-sensitive adhesive include an anthrone rubber or an anthrone resin containing an organic polysiloxane as a main component, or a rhodium-based crosslinking agent or a peroxide-based crosslinking agent added thereto. A crosslinking agent such as a reagent is used to crosslink and polymerize.

The adhesive layer of the adhesive tape of the present invention may contain other components (for example, an appropriate adhesion-imparting agent, a plasticizer, a filler, an antioxidant, etc.) in addition to the above-mentioned adhesive (base polymer).

As a method of forming the adhesive layer of the adhesive tape of the present invention, a conventionally known method can be employed, and examples thereof include a method of using a solvent (for example, toluene, xylene, ethyl acetate, methyl ethyl ketone, etc.). The coating liquid is prepared by diluting the above-mentioned adhesive or the like so as to have a nonvolatile content of 10 to 50% by weight, and is applied (coated) on a substrate or a suitable separator (peeling paper, etc.). And then dried.

Further, in the coating (coating) of the coating liquid, a known coating method can be used, and a conventional coating machine such as a gravure roll coater, a reverse roll coater, or a contact roll coat can be used. A cloth machine, a dip roll coater, a bar coater, a knife coater, a spray coater, a riprap coater, a direct coater, a slit coater, and the like.

Further, it may be formed by subjecting a substrate and an adhesive constituting the pressure-sensitive adhesive layer to melt extrusion molding, followed by stretching in a longitudinal or transverse direction (uniaxial stretching). As the melt extrusion method, any known technique such as an expansion method or a T-die method can be used.

The thickness of the adhesive layer of the adhesive tape of the present invention is, for example, about 10 to 50 μm. (It is preferably about 10 to 35 μm, and particularly preferably about 15 to 30 μm). When the thickness of the adhesive layer is less than the above range, there is a tendency that the adhesion force is lowered and it is difficult to connect the carrier tape and maintain the connected state. On the other hand, if the thickness of the adhesive layer is higher than the above range, the paste may overflow or the like, and the transition property of the carrier tape may be deteriorated.

The adhesive tape of the present invention is characterized in that the tear strength in the first direction of the face and the tear strength in the second direction orthogonal to the first direction are set to 1 when the tear strength in the second direction is set to 1, The tear strength in the first direction is less than 0.75 (preferably 0.10 or more, not more than 0.75, particularly preferably 0.50 or more and less than 0.75). When the tear strength in the first direction is 0.75 or more, the cracking property is insufficient, and when the upper cover tape is peeled off after the carrier tape is attached, the peeling is interrupted by the joint portion, and it is difficult to continuously perform the mounting work.

Further, the 180° peeling adhesive force (relative to polyethylene terephthalate film, peeling temperature: 25° C., peeling speed: 300 mm/min) of the adhesive tape of the present invention is, for example, 1.5 N/10 mm or more (compared to Good is 2.0~6.0 N/10 mm, especially preferably 3.0~5.0 N/10 mm). If the 180° peel adhesion of the adhesive tape of the present invention (relative to the polyethylene terephthalate film, peeling temperature: 25° C., peeling speed: 300 mm/min) is lower than the above range, the upper cover tape is connected. When the carrier tape is attached and the upper cover tape is peeled off, there is a tendency that the peeling is interrupted and it is difficult to continuously perform the mounting work.

Further, the 180° peeling adhesive force (relative to the paper substrate, peeling temperature: 25° C., peeling speed: 300 mm/min) of the adhesive tape of the present invention is, for example, 1.5 N/10 mm or more (preferably 1.5 to 6.0 N). /10 mm, especially 1.5 to 4.0 N/10 mm). 180° peel adhesion of the adhesive tape of the present invention (relative to When the paper substrate, the peeling temperature: 25° C., and the peeling speed: 300 mm/min are less than the above range, the adhesive tape attached to the carrier tape when peeling off the upper cover tape is peeled off following the upper cover tape, and the connection of the carrier tape becomes A difficult situation. The 180° peel adhesion of the adhesive tape can be adjusted, for example, by controlling the thickness of the adhesive layer, the composition of the adhesive constituting the adhesive layer, and the like.

Further, as the adhesive tape of the present invention, 180° peeling adhesive force (relative to paper substrate, peeling temperature: 25° C., peeling speed: 300 mm/min) and 180° peeling adhesion (relative to polyterephthalic acid) The ratio (the former/the latter) of the ethylene glycol film, the peeling temperature: 25 ° C, and the peeling speed: 300 mm/min) is, for example, 0.3 or more, preferably 0.5 or more, and particularly preferably 0.8 or more. If the ratio of the adhesive force of the adhesive tape of the present invention to the paper substrate and the adhesive force with respect to the polyethylene terephthalate film is lower than the above range, the peeling of the upper cover tape after the carrier tape is attached may cause peeling. Interrupted and difficult to perform continuous installation work.

The adhesive tape of the present invention preferably colors at least one of the substrate and the adhesive layer. The color of the coloring is not particularly limited, and the connecting portion of the carrier tape can be easily distinguished, and the number of the electronic component carried by the carrier tape can be easily attached by the detecting device (for example, a photocell) of the mounting machine at the time of mounting. In terms of management, it is preferable to color the color (colorless transparent and color other than white, such as black, blue, etc.) which can be easily recognized by visual observation. The coloring of the substrate and/or the adhesive layer can be carried out, for example, by a method of printing or a method of adding a pigment to a raw material for forming a substrate and/or an adhesive layer.

The form of the adhesive tape of the present invention is not particularly limited, and may be wound into a roll shape. The form may also be in the form of a sheet. Further, the adhesive tape wound in a roll form may have a form of being wound into a roll shape while protecting the adhesive layer by the following release film.

Further, in terms of protection of the surface of the adhesive layer, prevention of adhesion, and the like, the adhesive tape of the present invention may be provided with a separator (release liner) on the surface of the adhesive layer. The separator to be used is not particularly limited, and a known conventional release paper or the like can be used. For example, a substrate comprising a release layer of a plastic film or paper surface-treated with a release agent such as an anthrone-based, a long-chain alkyl group, a fluorine-based or a molybdenum sulfide-based release agent; and a polytetrafluoroethylene-containing polychlorinated product; Low-adhesive substrate of fluorine-based polymer such as trifluoroethylene, polyvinyl fluoride, polyvinylidene fluoride, tetrafluoroethylene-hexafluoropropylene copolymer, chlorofluoroethylene-vinylidene fluoride copolymer; olefin-containing resin A low-adhesive substrate such as a non-polar polymer such as polyethylene or polypropylene.

[film for connection of carrier tape]

The film for connection of the carrier tape of the present invention is obtained by laminating a base film to an adhesive layer of an adhesive tape for a carrier tape including the above-mentioned adhesive tape, and attaching a transfer tape to the surface of the substrate. Fig. 1 is a schematic view showing an example of a film for connection of a carrier tape according to the present invention, and a film (6a) for connection of a carrier tape is attached to an adhesive tape (1)/carrier tape (4)/base film (5). ) The order is obtained by layering. The film for connection of the carrier tape may be of a joint type (Fig. 2-6a) or a single piece type (Fig. 2-6b). The connection type of the connecting type carrier tape is cut and singulated to be used for connection of the carrier tape.

(adhesive tape for carrying belt connection)

The adhesive tape for carrying the belt includes the following adhesive tape, wherein The tear strength in one direction and the tear strength in the second direction orthogonal to the first direction, when the tear strength in the second direction is set to 1, the tear strength in the first direction is less than 0.75; preferably An adhesive tape obtained by cutting into a square (rectangular or square) having one side parallel to the first direction of the surface of the adhesive tape; thereby exhibiting excellent cracking along the first direction of the surface of the adhesive tape In terms of the aspect, it is preferable to have a side parallel to the first direction of the surface of the adhesive tape (=with a tear strength of less than 0.75 when the tear strength of the second direction of the surface of the adhesive tape is set to 1) The side in which the direction of the crack strength is parallel is sometimes referred to as "edge (first direction)") and the side parallel to the second direction of the surface of the adhesive tape (= is orthogonal to the "edge (first direction)" described above. On the side, the following is sometimes referred to as a "side (second direction)") square adhesive tape.

The length (w1) of the side (first direction) of the adhesive tape for carrier tape obtained by cutting the above-mentioned adhesive tape is, for example, about 20 to 100 mm, preferably 30 to 50 mm. The length (w2) of the side (second direction) is preferably a length that can be wound on the belt connecting portion in a manner that exceeds half a week and does not reach one week, and is, for example, preferably more than one time the width of the carrier tape. It is less than about 2 times (preferably about 1.1 to 1.8 times the width of the carrier tape). Therefore, the length (w2) of the side (second direction) is, for example, about 8 to 17.5 mm, preferably about 8.8 to 14.4 mm, and more preferably 10 to 14 mm (Fig. 3). When the length (w1) of the side (first direction) is less than the above range, the connection strength is insufficient, and it is difficult to maintain the connectivity of the carrier tape. In addition to this, there is a case where it is difficult to accurately detect the joint and it is difficult to manage the lot number of the electronic component. On the other hand, if the length (w2) of the side (second direction) is lower than the above range, the connection strength becomes insufficient, and it is difficult to maintain the connectivity of the carrier tape. If the length (w2) of the side (second direction) is higher than the above range, it is wound around the carrier tape for one or more times, and it is difficult to peel off the transfer tape after winding the adhesive tape for the carrier tape connection/transfer tape laminate. When the upper cover tape is peeled off after the carrier tape is attached, there is a case where the peeling is interrupted and it is difficult to continuously perform the mounting work.

Further, in order to further improve the cracking property along the edge (the first direction), the adhesive tape for the carrier tape connection preferably has one or two extending in the inner direction on at least one side of the side (the second direction). In particular, the slits can be used in any direction of the right and left sides, and the workability is excellent, as long as the side (the first direction) of the adhesive tape for the carrier tape is aligned with the longitudinal direction of the carrier tape. Preferably, it is preferable to have one or two or more slits extending in the inner direction on opposite sides of the side (second direction). The shape of the slit is not particularly limited, and examples thereof include a curtain-shaped slit having a depth of about 10 to 1000 μm (preferably about 50 to 500 μm) or a depth of about 10 to 1000 μm (preferably 50 to 500 μm). Left and right) 15~45 degree V-shaped groove (V-notch)-like incision. In the present invention, it is preferable to use an adhesive tape for connecting a carrier tape having a V-shaped notch-shaped slit in terms of excellent cracking properties at any position from the side (second direction).

Further, the 180° peeling adhesive force (relative to polyethylene terephthalate film, peeling temperature: 25° C., peeling speed: 300 mm/min) of the adhesive tape for carrier tape connection is, for example, 1.5 N/10 mm or more ( It is preferably 2.0 to 6.0 N/10 mm, and more preferably 3.0 to 5.0 N/10 mm). If the 180° peeling adhesive force (relative to the polyethylene terephthalate film, peeling temperature: 25° C., peeling speed: 300 mm/min) of the adhesive tape for the carrier tape is lower than the above range, there is The connection of the upper cover tape tends to be insufficient. When the upper cover tape is peeled off after the carrier tape is attached, the peeling is interrupted and it is difficult to continuously perform the mounting work.

Further, the 180° peeling adhesive force (relative to the paper substrate, peeling temperature: 25° C., peeling speed: 300 mm/min) of the adhesive tape for carrier tape connection is, for example, 1.5 N/10 mm or more (preferably 1.5 to 6.0). N/10 mm, especially 1.5 to 4.0 N/10 mm). If the 180° peeling adhesive force (relative to the paper substrate, peeling temperature: 25° C., peeling speed: 300 mm/min) of the adhesive tape for the carrier tape is lower than the above range, the tape is attached to the carrier tape when the upper cover tape is peeled off. The upper adhesive tape is peeled off following the upper cover tape, and the connection of the carrier tape becomes difficult.

Further, as a carrier tape for the carrier tape connection, the 180° peeling adhesive force (relative to the paper substrate, peeling temperature: 25° C., peeling speed: 300 mm/min) and 180° peeling adhesion force (relative to polyparaphenylene) The ratio (the former/the latter) of the ethylene formate film, the peeling temperature: 25 ° C, and the peeling speed: 300 mm/min) is, for example, 0.3 or more, preferably 0.5 or more, and particularly preferably 0.8 or more. If the ratio of the adhesive force of the adhesive tape for the carrier tape to the polyethylene terephthalate film to the adhesive force with respect to the paper substrate is less than the above range, the peeling of the upper cover tape after the carrier tape is attached may be peeled off. Interrupted and difficult to perform continuous installation work. The 180° peeling adhesive force of the adhesive tape for the carrier tape can be adjusted, for example, by controlling the thickness of the adhesive layer, the composition of the adhesive constituting the adhesive layer, and the like.

(base film)

The base film of the present invention is used for the protection of the adhesive layer for carrying the adhesive tape for connection, the prevention of adhesion, and the roll protection of the film for continuous carrier tape connection. The shape of the film for continuous carrier tape connection of the holding, the one-piece type or the singulation is maintained, and the adhesive tape for the carrier tape is peeled off before being attached to the connection portion of the carrier tape.

The base film is not particularly limited, and a known release paper (separator) or the like can be used. For example, a release sheet containing an anthrone, a long-chain alkyl group, a fluorine-based or a molybdenum sulfide-based release agent can be used. a substrate for treating a peeling layer such as a plastic film or paper; containing polytetrafluoroethylene, polychlorotrifluoroethylene, polyvinyl fluoride, polyvinylidene fluoride, tetrafluoroethylene-hexafluoropropylene copolymer, chlorofluoroethylene-bias A low-adhesive base material of a fluorine-based polymer such as a difluoroethylene copolymer; a low-adhesive base material containing a nonpolar polymer such as an olefin resin (for example, polyethylene or polypropylene).

The thickness of the base film is, for example, about 16 to 300 μm, preferably 90 to 150 μm, and particularly preferably 95 to 130 μm. When the thickness of the base film is less than the above range, the strength is insufficient. Therefore, there is a tendency that wrinkles are likely to occur on the film for connection of the carrier tape, and it is difficult to prevent creases, and it is difficult to bond the joint portion of the carrier tape. On the other hand, when the thickness of the base film is higher than the above range, it tends to be difficult to be wound into a roll shape, and the repellency of the base film is too strong, and it tends to be peeled off from the adhesive tape for carrier tape connection.

The shape of the base film is not particularly limited. The hole corresponding to the transfer hole of the carrier tape may or may not be included.

(replace tape)

When the adhesive tape of the present invention is attached to the connecting portion of the carrier tape, the adhesive tape of the present invention has a wrinkle which prevents the adhesive tape for the carrier tape from being attached, thereby facilitating the bonding, and bonding the carrier tape. Belt bearing belt The bending of the back surface becomes easy, and the adhesive tape for connecting the carrier tape is attached to the connecting portion of the carrier tape and then peeled off.

The transfer tape has a structure in which an adhesive layer is provided on one side of the substrate. The base material of the transfer tape may be the same as the base material of the above-mentioned adhesive tape for carrier tape connection.

In order to improve the adhesion to the adhesive layer and the like, it is possible to perform a conventional surface treatment on the surface of the substrate on which the tape is transferred, for example, chromic acid treatment, ozone exposure, flame exposure, high-voltage shock exposure, ionizing radiation treatment, etc. Or oxidation treatment by physical methods.

The thickness of the substrate as the transfer tape is, for example, about 16 to 125 μm, preferably 25 to 85 μm, more preferably 38 to 75 μm, and most preferably 45 to 70 μm. When the thickness of the base material is less than the above range, the strength is insufficient, and it is difficult to prevent the occurrence of wrinkles when the adhesive tape for the carrier tape is attached to the joint portion of the carrier tape, and the peeling is interrupted when the upper cover tape is peeled off after the carrier tape is attached. It is difficult to carry out the installation work continuously. Further, when the adhesive tape for connecting the carrier tape is bonded to the connection portion of the carrier tape and the transfer tape is peeled off, it tends to be difficult to peel off. On the other hand, when the thickness of the base material is more than the above range, the adhesive tape for connecting the belt tends to be bent toward the back surface of the carrier tape, and the volume tends to be large, and the workability tends to be lowered.

The adhesive layer of the transfer tape may be the same as the adhesive layer of the adhesive tape for the carrier tape.

The thickness of the adhesive layer of the transfer tape is, for example, about 6 to 12 μm, preferably 7 to 11 μm, and more preferably 8 to 10 μm. If the thickness of the adhesive layer is lower than the above range, there is a decrease in the adhesion force and it is difficult to maintain the adhesion of the carrier tape connection. The tendency to bring. On the other hand, when the thickness of the adhesive layer is higher than the above range, the adhesive force to the adhesive tape for carrier tape connection becomes too strong, and it is difficult to peel off the adhesive tape for connecting the carrier tape after being bonded to the carrier tape connection portion. The tendency to transfer tape.

Further, the transfer tape has a weak adhesive force, and its 180° peeling adhesive force (relative to the SUS plate, peeling temperature: 25° C., peeling speed: 300 mm/min) is, for example, 0.02 N/25 mm or more (preferably 0.03 to 0.70). N/25 mm, especially preferably 0.04~0.20 N/25 mm). If the 180° peeling adhesive force of the transfer tape (relative to SUS plate, peeling temperature: 25° C., peeling speed: 300 mm/min) is lower than the above range, it is difficult to maintain the adhesive tape for connecting the carrier tape, and the carrier tape is bonded to the adhesive tape. When the tape is attached to the joint portion of the carrier tape, the workability tends to be lowered. On the other hand, if the 180° peeling adhesive force (relative to the SUS plate, peeling temperature: 25° C., peeling speed: 300 mm/min) of the tape is higher than the above range, the adhesive tape for the carrier tape is attached to the carrier. After the connection portion of the belt, it is difficult to peel only the transfer tape, and when the carrier tape is attached and the upper cover tape is peeled off, peeling is interrupted and it is difficult to continuously perform the mounting work.

The shape of the transfer tape is not particularly limited as long as it can improve the adhesion of the adhesive tape for the carrier tape to the connection portion of the carrier tape, and it is preferable to improve the operability and the positioning. In order to improve the bonding work, it is preferable that the adhesive tape has a portion to which the adhesive tape for the carrier tape connection is not attached (hereinafter referred to as a "joining portion"). The hole corresponding to the conveying hole of the carrying belt. As long as the length direction of the transfer tape is aligned with the side of the adhesive tape for the carrier tape connection (the first direction), it can be used regardless of whether it is attached to either of the left and right sides, and In the case where the adhesiveness of the carrier tape is a connection type, the shape of the transfer tape preferably has a first hole corresponding to the transfer hole of the carrier tape and is in the width direction of the spacer. The center line has a second hole at a position symmetrical with the first hole. Further, the film for connection of the one-piece type carrier tape does not necessarily have a hole corresponding to the transfer hole of the carrier tape.

Further, it is easier to bend the adhesive tape for the carrier tape to the back surface of the carrier tape, and when the transfer tape is peeled off after the carrier tape is attached, the peeling property can be improved by being repelled by the surface of the adhesive tape for the carrier tape connection. In terms of the aspect, it is preferable that the connecting portion has a "mouth". In the case where the adhesive tape for the carrier tape connection is a connection type, the connection portion has a "mouth", and the connection portion of the adhesive tape for the carrier tape connection can be reduced, and the singulation can be facilitated. Specific examples of the transfer tape of the present invention include a transfer tape having a shape as shown in Fig. 4 and the like.

As the length of the transfer tape, the "mouth" interval (w3) is easy to perform the bonding work, and preferably the length (w1) of the side (first direction) of the adhesive tape for connecting the tape. It is roughly the same, for example, about 20 to 100 mm, preferably 30 to 50 mm.

As the width (w4) of the transfer tape, it is preferable that the length (w2) of the side (second direction) of the adhesive tape for connecting the carrier tape is substantially the same, for example, 8.0. ~17.5 mm or so.

The position of the hole corresponding to the transfer hole of the carrier tape is preferably a distance (w5) from the center line in the width direction to the center of the hole, for example, about 2.0 to 5.0 mm.

The shape of the "mouth" is not particularly limited, and examples thereof include a diameter. (w7) Semicircular shape, concave shape, triangular shape, etc. of about 4.2 to 10 mm. Further, the length (w6) from the center line in the width direction to the outer circumference of the "mouth" is, for example, about 2.5 to 7.5 mm.

[Connection method of carrier tape]

The method for joining a carrier tape according to the present invention is characterized in that the base film of the film for connection of the carrier tape is peeled off, and the adhesive tape/transfer tape laminated body for the carrier tape is connected to the surface of the adhesive tape for connecting the carrier tape. When the first direction is aligned with the longitudinal direction of the carrier tape, the adhesive layer of the adhesive tape for the carrier tape is wound toward the carrier tape connecting portion, and then the transfer tape is peeled off. According to the connecting method of the carrier tape of the present invention, when the carrier tape is attached and the upper cover tape is peeled off, the upper cover tape can be smoothly peeled off without being interrupted by the connection portion, and the mounting work can be continuously performed.

As a method of connecting the carrier tape of the present invention, it is preferred to include the following steps (I) to (V). Further, in the case where a monolithic type is used as the film for connection of the carrier tape, the following step (I) can be omitted.

(I) cutting the film for connection of the carrier tape to be singulated; (II) peeling off the base film of the film for connection of the singulated carrier tape; (III) attaching the adhesive tape/transfer tape for the obtained carrier tape The laminated body is attached to the carrier tape connecting portion; (IV) the carrier tape connecting adhesive tape/transferring tape laminated body is wound around the carrier tape connecting portion; (V) the peeling transfer tape is peeled off.

In the above step (I), the film for connection of the connection type carrier tape is used for the connection of the carrier tape after being diced and diced. Connecting film as a connecting type carrier tape The cut portion is not particularly limited as long as it is an adhesive tape for connecting the carrier tape (that is, the joint portion), and is preferably improved in terms of the workability on the joint portion of the carrier tape. The film is cut at the film for connection of the singulated carrier tape which can obtain at least one hole corresponding to the transfer hole of the carrier tape.

In the above step (III), it is preferable to bond in a state in which the hole corresponding to the transfer hole of the transfer tape is aligned with the transfer hole of the carrier tape. Further, when the two sides (second direction) of the adhesive tape for carrying the belt are simultaneously provided with the slit, the first direction of the surface of the adhesive tape for the carrier tape is aligned with the longitudinal direction of the carrier tape. In the case where only one of the opposite sides (the second direction) has a slit, it is preferable that the first direction of the surface of the adhesive tape for the carrier tape is aligned with the length direction of the carrier tape, and the upper cover tape is torn. The side of the starting point is placed with the side of the slit (the second direction) and fitted.

As a specific example of the connection method of the carrier tape of the present invention, the method described in FIG. 5 (the method of connecting the carrier tape of the paper substrate using the film for connection of the continuous carrier tape) may be mentioned. Further, the film for connection of the carrier tape of the present invention can also be used for the connection of the embossed carrier tape as in the case of the carrier tape of the paper substrate. In the case of the embossed carrier tape, it is preferable to attach the adhesive tape/transfer tape laminating body for the carrier tape to the carrier tape connecting portion, and then wrap around the convex portion in the winding step (FIG. 6).

According to the connecting method of the carrier tape of the present invention, a connecting carrier tape comprising a carrier tape/carrier tape connecting adhesive layer laminate can be obtained. Since the connecting carrier tape is connected to the two carrier tapes by the adhesive tape for connecting the carrier tape of the present invention, Therefore, there is no case where the adhesive tape for the carrier tape is cracked due to the peeling of the upper cover tape, and the connection portion prevents the peeling of the upper cover tape (see Fig. 5 (VI)). Therefore, the installation work can be performed continuously.

[Examples]

Hereinafter, the present invention will be more specifically described by the examples, but the present invention is not limited by the examples.

Example 1

The natural rubber (white gum) was subjected to mastication using a grinding roll to obtain a plain rubber having a Mooney viscosity ML 1+4 (100 ° C) of 70. 100 parts of the obtained plain rubber and 50 parts of a terpene resin (trade name "YS Resin PX1150", manufactured by Yasuhara Chemical Co., Ltd.) were uniformly dissolved in 400 parts of toluene to obtain an adhesive (1).

The obtained adhesive (1) was applied to a 25 μm uniaxially stretched PP film (trade name "MCMD-AS", manufactured by Futamura Chemical Co., Ltd.) to form an adhesive tape so as to have a thickness of 25 μm after drying. (1).

The main direction of extension of the substrate is taken as the first direction of the surface, and the direction orthogonal to the main extension direction of the substrate is taken as the second direction of the surface, and is cut from the obtained adhesive tape (1) to be parallel to the first direction of the surface. The edge (edge (first direction)) is used as the long side, and the side parallel to the second direction of the surface (side (second direction)) is used as a rectangle of 5.25 mm × 250 mm on the short side to obtain adhesion of the carrier tape. With (1).

The following base film was bonded to the adhesive layer of the adhesive tape (1) for the carrier tape connection, and the following transfer tape was bonded to the base material surface to obtain the film for connection (1) of the carrier tape.

Base film: trade name "EN78P (67)" (thickness: 115 μm, width: 5.25 mm, length: 250 mm, manufactured by Lintec Co., Ltd.)

Transfer tape: trade name "NE-tak" (thickness: 69 μm, width: 5.25 mm, length: 250 mm, manufactured by Riyung Chemical Industry Co., Ltd.)

Example 2

100 parts by weight of ethyl acrylate/acrylic acid (weight ratio: 100 parts by weight / 3 parts by weight) as an acrylic copolymer constituting a monomer, isocyanate, in a form of a nonvolatile component of 30% by weight 5 parts by weight of a crosslinking agent (trade name "Coronate L", manufactured by Nippon Polyurethane Co., Ltd.) was diluted to obtain an adhesive (2).

An adhesive tape (2) was produced in the same manner as in Example 1 except that the adhesive (2) was used instead of the adhesive (1).

In the same manner as in Example 1, the adhesive tape (2) for the carrier tape connection and the film for connection of the carrier tape were obtained in the same manner as in Example 1 except that the adhesive tape (2) obtained in Example 2 was used instead of the adhesive tape (1). ).

Comparative example 1

A 25 μm biaxially oriented PP (OPP) film (trade name "Torayfan BO", manufactured by Toray Co., Ltd.) was used instead of a 25 μm uniaxially stretched PP film (trade name "MCMD-AS", manufactured by Futamura Chemical Co., Ltd.). Except for this, an adhesive tape (3) was produced in the same manner as in Example 1.

The adhesive tape (3) for carrying the tape and the film for connection of the carrier tape were obtained in the same manner as in Example 1 except that the adhesive tape (3) obtained in Comparative Example 1 was used instead of the adhesive tape (1). ).

Comparative example 2

A 25 μm biaxially stretched PET film (trade name "Lumirror", manufactured by Toray Co., Ltd.) was used instead of a 25 μm uniaxially stretched PP film (trade name "MCMD-AS", manufactured by Futamura Chemical Co., Ltd.). An adhesive tape (4) was produced in the same manner as in Example 1 except for the above.

The adhesive tape (4) for carrier tape connection and the film for connection of the carrier tape (4) were obtained in the same manner as in Example 1 except that the adhesive tape (4) obtained in Comparative Example 2 was used instead of the adhesive tape (1). .

For the adhesive tapes obtained in the examples and the comparative examples, the adhesive strength (with respect to the paper substrate for the carrier tape, with respect to PET, and with respect to the SUS304BA plate) and the tear strength ratio were measured by the following methods.

(1) Adhesive force of the adhesive tape (relative to the paper substrate for the carrier tape)

The adhesive tape obtained in the examples and the comparative examples was subjected to a pressure load of 2 kgf/cm ² at normal temperature (25 ° C) for 2 seconds (edge (first direction) length × side (second direction) length = 100 mm × 10 mm) was pressed against a carrier paper substrate (trade name "OJH75", manufactured by Oji Paper Co., Ltd.) which was fixed to a stainless steel auxiliary plate with a double-sided adhesive tape to obtain a sample.

The obtained sample was measured by a precision universal testing machine (trade name "Autograph AG-I", manufactured by Shimadzu Corporation) at a normal temperature (25 ° C) at a peeling speed of 300 mm/min and a peeling angle of 180 °. The force required to peel off the paper substrate from the carrier tape along the edge (first direction) is used as the adhesion to the paper substrate for the carrier tape when pressed at 25 °C.

(2) Adhesive force of adhesive tape (for PET)

The adhesive tape obtained in the examples and the comparative examples was subjected to a pressure load of 2 kgf/cm ² at normal temperature (25 ° C) for 2 seconds (edge (first direction) length × side (second direction) length = 100 mm × 10 mm) and press-fitted to a substrate surface (PET film) which is attached to a stainless steel auxiliary board with a double-sided adhesive tape (trade name "NO.318H-14A", manufactured by Nitto Denko Corporation). Thereby a sample is obtained.

The obtained sample was measured by a precision universal testing machine (trade name "Autograph AG-I", manufactured by Shimadzu Corporation) at a normal temperature (25 ° C) at a peeling speed of 300 mm/min and a peeling angle of 180 °. The force required to peel off the substrate surface (PET) from the upper cover tape along the edge (first direction) is used as the adhesion to PET at 25 ° C.

(3) Adhesive force of adhesive tape (relative to SUS304BA board)

The adhesive tape obtained in the examples and the comparative examples was subjected to a pressure load of 2 kgf/cm ² at normal temperature (25 ° C) for 2 seconds (edge (first direction) length × side (second direction) length = 100 mm × 10 mm) was pressed onto a SUS304BA plate to obtain a sample.

The obtained sample was measured by a precision universal testing machine (trade name "Autograph AG-I", manufactured by Shimadzu Corporation) at a normal temperature (25 ° C) at a peeling speed of 300 mm/min and a peeling angle of 180 °. The force required to peel off the SUS304BA board along the edge (first direction) was taken as the adhesion to the SUS304BA board at 25 °C.

(4) Adhesion ratio (relative to the carrier paper substrate / relative to the upper cover tape substrate (PET))

The adhesive force (relative to the carrier paper substrate) was calculated based on the adhesion of the adhesive tape (relative to the carrier paper substrate) to the adhesion of the adhesive tape (relative to the upper cover tape substrate (PET)). Adhesion (relative to the upper cover tape substrate) (PET)) value.

(5) tear strength ratio

For the first direction and the second direction of the faces of the adhesive tapes obtained in the examples and the comparative examples, the tear strength was measured by an Elmendorf tear test according to JIS K7128 (1998), respectively, according to the first direction of the face The tear strength ratio is determined by the tear strength]/[the tear strength in the second direction of the surface].

The following tearability of the film for connection of the carrier tape (the number of samples: 100) obtained in the examples and the comparative examples was evaluated by the following method.

(6) Follow the tearing

The end portions of the two carrier tapes are butted together, and the long side of the adhesive tape for the carrier tape is aligned with the longitudinal direction of the carrier tape, and a heat sealing tester (trade name "Heat Sealing Tester", Kumagai Riki is used. (manufactured by the Industrial Co., Ltd.), which is pressed at a pressure of 0.3 MPa, and the adhesive tape for the carrier tape connection obtained by peeling the base film from the film for connection of the carrier tape obtained in the examples and the comparative examples is attached and attached. At the butt portion, the transfer tape was peeled off to obtain a sample.

<bearing belt>

Substrate: Paper substrate, trade name "HOCTO60", manufactured by Kita-Kyuto Paper Co., Ltd.

Top cover tape: base material (polyethylene terephthalate film) / adhesive layer (ethylene-vinyl acetate copolymer), trade name "No. 318H-14A", manufactured by Nitto Denko Co., Ltd.

Lower tape: base material (Japanese paper) / adhesive layer (polyethylene adhesive), trade name "No. 318H-55P", manufactured by Nitto Denko Co., Ltd.

For the obtained samples (100 pieces), a precision universal testing machine (trade name "Autograph AGI", manufactured by Shimadzu Corporation) was used, and the upper cover was set at a peeling speed of 300 mm/min and a peeling angle of 180°. The tape was peeled off, and the adhesive tape for the carrier tape connection of the connection portion was cracked in association with the peeling of the upper cover tape, and the sample which peeled off the upper cover tape without interruption was counted as an evaluation of the following tearability.

The above results are summarized in the following table.

While the invention has been described in detail with reference to the specific embodiments the embodiments

The present application is based on Japanese Patent Application No. 2011-263054, filed on Nov. 30, 2011,,,,,,,,,,,,,

1‧‧‧Repost tape

2‧‧‧剜口

3‧‧‧ hole corresponding to the transfer hole of the carrier tape

4‧‧‧Adhesive tape for carrier tape connection

5‧‧‧Basic film

6a‧‧‧Connection film for connecting tape

6a'‧‧‧Connected film for singulated carrier tape

6b‧‧‧Connection film for connecting tape

7‧‧‧ Carrying belt

8‧‧‧Connecting belt

9‧‧‧Upper cover

10‧‧‧embossed carrier

Fig. 1 is a schematic view showing an example of a film for connection of a carrier tape of the present invention.

Fig. 2 is a schematic view showing an example of a connection type (6a) and a one-piece type (6b) in the film for connection of the carrier tape of the present invention.

Fig. 3 is a schematic view showing an example of the adhesive tape for carrier tape connection of the present invention (length of the side (first direction): w1, length of the side (second direction): w2).

Fig. 4 is a schematic view showing an example of a transfer tape for use in an adhesive tape for connecting a carrier tape according to the present invention, wherein w3 represents a gap in the longitudinal direction, w4 represents a length in the width direction, and w5 represents a center line from the width direction to the load. The length of the hole corresponding to the hole corresponding to the transfer hole, w6 indicates the length from the center line in the width direction to the outer circumference of the "mouth", and w7 indicates the diameter of the "mouth".

Fig. 5 is a schematic view showing an example of a method of connecting a carrier tape of the present invention.

Fig. 6 is a schematic view showing an example of an embossed carrier tape joined by the joining method of the carrier tape of the present invention.

Claims (10)

An adhesive tape attached to an adhesive layer on one side of a substrate, and a tear strength in a first direction with respect to the face and a tear strength in a second direction orthogonal to the first direction, When the tear strength of the direction is set to 1, the tear strength in the first direction is less than 0.75, and the base material includes a plastic base material which has been subjected to uniaxial stretching treatment. The adhesive tape of claim 1, wherein the 180° peeling adhesive force (relative to the polyethylene terephthalate film, peeling temperature: 25° C., peeling speed: 300 mm/min) is 1.5 N/10 mm or more, 180° peeling The adhesive force (relative to the paper substrate, peeling temperature: 25 ° C, peeling speed: 300 mm/min) was 1.5 N/10 mm or more. The adhesive tape of claim 1 or 2, wherein the substrate has a thickness of 10 to 100 μm. The adhesive tape of claim 1 or 2, wherein at least one of the substrate and the adhesive layer is colored. A film for connection of a carrier tape, which is attached to a base film of an adhesive layer of an adhesive tape for carrying tape for an adhesive tape according to any one of claims 1 to 4, and which is attached to the substrate by a transfer tape. obtain. The film for connection of the carrier tape of claim 5, wherein the carrier tape for bonding tape has a 180° peeling adhesive force (relative to the polyethylene terephthalate film, peeling temperature: 25° C., peeling speed: 300 mm/min) In the case of 1.5 N/10 mm or more, the 180° peeling adhesive force (relative to SUS plate, peeling temperature: 25° C., peeling speed: 300 mm/min) of the transfer tape is 0.02 N/25 mm or more. The film for connection of the carrier tape of claim 5 or 6, wherein at least one side of the side parallel to the second direction of the surface of the adhesive tape for carrying the tape has one or two or more slits extending in the inner direction. The film for connection of the carrier tape of claim 5 or 6, wherein the transfer tape has a hole corresponding to the transfer hole of the carrier tape. A method for joining a carrier tape, which is used for peeling off a base film of a film for connection of a carrier tape according to any one of claims 5 to 8, and for carrying the adhesive tape/transfer tape laminated body for the carrier tape connection, the carrier tape is provided When the first direction of the surface of the adhesive tape is aligned with the longitudinal direction of the carrier tape, the adhesive layer of the adhesive tape for the carrier tape is wound toward the carrier tape connecting portion, and then the transfer tape is peeled off. A connection carrier tape is connected by a connection method of a carrier tape as claimed in claim 9.