JPH09235519A - Hot melt-type adhesive film and processed product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject product useful in the case of adhering substances each other having physically or chemically different adhering surfaces and having an unconventional and effective multi-layered structure constituted by forming upper and lower surface layers with chemically different hot melt adhesives. SOLUTION: This hot melt-type adhesive is constituted by forming upper and lower surface layers with chemically different hot melt adhesives. Concretely, e.g. in the case of adhering an extremely smooth surface with a rough surface having intense unevenness together simultaneously such as two plies of overlapped satin clothes to form a double mark, it is preferable to form each of the upper and lower surface layers with a polyurethane film having 80-150 deg.C, flow initiating temperature and a polyester film. After arranging a polyurethane surface layer at the rough surface side, and a polyester surface layer at the smooth surface side, the adhesion is preferably performed. The thicknesses of the polyurethane film and the polyester film are each preferably 20-100μm. Further, in order to obtain the object product by laminating two kinds of films, e.g. a dry laminating is preferred by utilizing a polyurethane-based adhesive.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot-melt type adhesive film used for adhesion processing between various articles having different materials or states of adherend surfaces, and an adhesion processed article thereof, and more particularly, a sports mark and an event. The present invention relates to an adhesive film for processing adhesive sewn products such as marks and character marks, and processed products thereof.

[0002]

2. Description of the Related Art It is known that various materials and forms such as plastics, paper / fiber, leather / synthetic leather, wood materials, metal materials, and ceramics can be joined with a hot melt adhesive. . The hot-melt adhesive film used in these cases, ethylene-vinyl acetate copolymer, styrene-diene block copolymer,
A film having a single layer structure such as modified polyolefin, polyurethane, polyester, polyamide is generally used.

However, in many cases, the physical or chemical conditions of the adherends to be joined, that is, the materials and physical conditions of the two adherends are not always similar.

As one specific example, in recent years, a satin-woven cloth using polyester or nylon fibers for sports marks has been widely used. This fabric is
It is characterized by a smooth surface and good gloss. On the other hand, the back surface is a rough surface with rough surface and unevenness, and the states of both surfaces are greatly different. When this fabric is used as a mark, a suitable hot melt film is heat laminated on the back side and hot melt glued to the appropriate parts of the uniform.

[0005]

When this fabric is used as a single mark, there is no particular problem in terms of quality, but when two fabrics are used as a double mark in terms of quality. , There is a big problem.

That is, when used as a double mark,
That is, the surface of the cloth, that is, the extremely smooth surface and the back surface, which is a rough surface having extremely rough surface, must be bonded at the same time.

That is, if a hot-melt film that adheres well to a smooth surface is selected, the adhesion to the rough back surface is poor, and conversely if a hot-melt film that adheres well to the rough back surface is used. , This time, conversely, the adhesion to a smooth surface is poor. If such a double mark is used by adhering to a uniform, peeling occurs and it is difficult to put it to practical use.

In order to solve this problem, it has been attempted to increase the thickness of the hot melt film to be used. However, the melted film exudes from the periphery of the mark at the time of bonding, or the bonding machine (for example, The workability is remarkably impaired by fusing with a hot press machine), and the commercial value is lacking, and the mark is too hard, so the texture is also poor. Therefore, it is the actual situation that the double mark using satin has not been developed yet.

That is, a single-layer hot melt film has a limit in order to obtain a sufficient adhesive strength for a mark ground whose surface states are remarkably different from each other. Therefore, use a two-layer film having different properties. Tried to solve the problem.

On the back surface side of the mark surface, which is uneven and has a rough surface, a hot melt film having a high penetration effect, that is, a strong adhesive strength is obtained by the anchor effect, is used, and the mark surface is highly smooth. Since it is difficult to obtain good adhesion on the surface side of the film due to the anchor effect, an attempt was made to obtain a strong adhesion strength by using a hot-melt film with high affinity.

That is, an attempt was made to solve the problem, paying attention to the fact that the bonding mechanism is different on both sides.

[0012] As a result of conducting research while always paying attention to the film so that it does not become too hard and impair the feeling, in order to obtain good adhesive strength with an anchor effect on the back surface of the mark, that is, a rough surface, Flow starting temperature is 80-150 ℃
Polyurethane film, and on the smooth surface side,
Due to the affinity, the melting point is 8 to obtain a strong adhesive strength.
It was found that the use of a polyester film at 0 to 150 ° C is extremely effective in solving the problem.

As described above, the technical idea of the present invention is to provide a novel and effective constitution of a hot-melt type adhesive film to be used for joining articles having different adherends physically or chemically. A hot-melt film for making a double mark using satin and a processed product thereof are presented as a specific example.

[0014]

The present invention described in claim 1 is a hot-melt adhesive film having a multilayer structure in which upper and lower surface layers are composed of chemically different hot-melt adhesives.

The present invention described in claim 2 is a laminated processed product in which adhered surfaces which are physically or chemically different from each other are bonded by the hot-melt type adhesive film described in claim 1.

The present invention according to claim 3 is the hot-melt type adhesive film according to claim 1, wherein the upper and lower surface layers are respectively composed mainly of hot-melt polyurethane and polyester.

In the present invention according to claim 4, the flow starting temperature of the surface layer material is 80 to 150 ° C., and the layer thickness is
It is each 20-100 micrometers, It is a hot-melt type adhesive film of Claim 3 characterized by the above-mentioned.

According to a fifth aspect of the present invention, a plain or marked tetron (or nylon) satin material composed of upper and lower two layers is formed by the hot melt adhesive film according to the third or fourth aspect. A double-satin processed product obtained by laminating and adhering the polyurethane surface layer of the adhesive film on the back surface of the upper satin fabric and the polyester surface layer of the adhesive film on the surface of the lower satin fabric, and laminating and adhering.

According to a sixth aspect of the present invention, the double satin ground processed product according to the fifth aspect is provided with a hot melt adhesive on the back surface thereof. It is a ground processed product.

As a method for laminating these two kinds of films, a laminating method (dry laminating) using an adhesive which is generally used can be used. As the adhesive, a polyurethane-based adhesive which is also commonly used is used. It may be a drug.

However, it is desirable to use the softest possible one after curing so as not to damage the feeling.

More specifically, the flow starting temperature of the polyurethane layer constituent material is preferably 80 to 150 ° C.,
Below 80 ° C, the product lacks heat resistance during use,
If the temperature is above ℃, the temperature at which the marks are bonded becomes too high, and the uniform fabric and the mark fabric itself are damaged by heat, which is not preferable. The thickness of the polyurethane layer is 20
~ 100μ is good, and if it is 20μ or less, the adhesiveness is poor and 1
When it is 00 μ or more, bleeding occurs when it is used by laminating it with a polyester layer, which is not preferable. On the other hand, the melting point and layer thickness of the polyester layer constituent material used for lamination are the same as those of the polyurethane film.

The total thickness of the laminated film is 40 to
It is good to combine so as to have a thickness of 200 μ, preferably 80 to 130 μ.

The polyurethane resin used in the present invention is
General commercially available thermoplastic polyurethane resins can be used, for example, polyols such as polyester polyols, polyether polyols, acrylic polyols, polyisocyanates, and, if necessary, polyhydric alcohols and / or
Alternatively, various polyurethane elastomers obtained by using a chain extender such as polyamine can be used. The above polyols can be used alone or as a mixture, but in many cases, at least a polyester polyol is contained.

The main constituent material for the polymer will be described below. The components of the polyester polyol include a polycarboxylic acid component and a polyhydric alcohol component. Examples of the polycarboxylic acid component include phthalic acid, isophthalic acid,
Aromatic carboxylic acids such as terephthalic acid or their acid anhydrides; Saturated or unsaturated aliphatic carboxylic acids such as glutaric acid, adipic acid, azelaic acid, sebacic acid, maleic acid, fumaric acid, dimerized linoleic acid or their acids Anhydrous etc. are mentioned. These polyvalent carboxylic acid components may be used alone or in combination of two or more. As the aliphatic carboxylic acid, a saturated aliphatic dicarboxylic acid such as adipic acid, azelaic acid, sebacic acid is often used.

Examples of the polyhydric alcohol include ethylene glycol, propylene glycol, trimethylene glycol, 1,3-butanediol, 2,3-butanediol, 1,5-pentanediol, 1,6-hexanediol and neo. Aliphatic dihydric alcohols such as benzyl glycol; polyoxyalkylene glycols such as diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol, tripropylene glycol, tetrapropylene glycol; glycerin, trimethylolpropane, trimethylolethane, hexane Aliphatic polyhydric alcohols such as triol and pentaerythritol; Bisphenol A such as 2,2-bis (4-dihydroxypropylphenyl) propane
And an alkylene oxide adduct.
As the polyhydric alcohol component, at least an aliphatic dihydric alcohol or polyoxyalkylene glycol is often used.

The molecular weight of the polyester polyol is
500-5,000, preferably 700-3,000,
More preferably, it is about 1,000 to 2,000.

As the polyisocyanate, for example,
Aromatic diisocyanates such as 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, phenylene diisocyanate, xylylene diisocyanate, diphenylmethane diisocyanate and 1,5-naphthalene diisocyanate, 1,4-tetramethylene diisocyanate, 1,6- Examples thereof include aliphatic diisocyanates such as hexamethylene diisocyanate and 1,10-decamethylene diisocyanate, and alicyclic diisocyanates such as isophorone diisocyanate. One or more of these polyisocyanates can be used.

As the chain extender, the same polyhydric alcohols as described above (for example, ethylene glycol, propylene glycol, trimethylene glycol, 1,3-butanediol, 2,3-butanediol, 1,4-butanediol, 1,5-Pentanediol, 1,6-hexanediol, diol such as neopentyl glycol, glycerin, trimethylolpropane, trimethylolethane, pentaerythritol, and other polyols) can be used. As the chain extender, polyamines such as (poly) alkylene polyamines such as ethylenediamine, diethylenetriamine, triethylenetetraamine, hexamethylenediamine and propylenediamine; alkanolamines such as monoethanolamine, diethanolamine and triethanolamine, etc. Can be used. Preferred chain extenders are polyhydric alcohols.

Next, the main raw materials for forming the polyester used in the present invention will be described.

As the diol component, conventional aliphatic, alicyclic and aromatic diols are used.

Examples of the alicyclic diol include ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, 1,3-butanediol and 1,4-butane. Examples include diol, neopentyl glycol, 1,5 ¥ pentanediol, 1,6-hexanediol, polymethylene glycol and the like.

Examples of the alicyclic diol include 1,4
-Cyclohexanediol, 1,4-cyclohexanedimethanol, 2,2-bis (4-hydroxyethoxycyclohexyl) propane, hydrogenated bisphenol A
And alkylene oxide adducts such as ethylene oxide and propylene oxide.

As the aromatic diol, for example, resorcinol, naphthalene diol, 2,2-bis (4-hydroxyphenyl) propane, bisphenol A and an adduct of alkylene oxide such as ethylene oxide or propylene oxide, for example, 2 , 2-bis (4
-Hydroxyethoxyphenyl) propane, 2,2-bis (4-hydroxydiethoxyphenyl) propane,
2,2-bis (4-hydroxytriethoxyphenyl)
Propane, 2,2-bis (4-hydroxypolyethoxyphenyl) propane, 2,2-bis (4-hydroxypropoxyphenyl) propane, 2,2-bis (4-hydroxydipropoxyphenyl), 2,2-bis (4-hydroxytripropoxyphenyl) propane, 2,2-
Examples include bis (4-hydroxypolypropoxyphenyl) propane and the like.

As the aromatic diol component, the same or different diols can be used alone or in combination of two or more.

The dicarboxylic acid component is composed of terephthalic acid and two or more carboxylic acids containing at least terephthalic acid. Preferred derivatives of terephthalic acid include terephthalic acid methyl ester.

Examples of the dicarboxylic acid which can be used in combination with the terephthalic acid include aliphatic dicarboxylic acids such as maleic acid, succinic acid, adipic acid, suberic acid, azelaic acid, sebacic acid and dodecanoic acid; 1,4-cyclohexanedicarboxylic acid. Alicyclic dicarboxylic acids such as acids; aromatic dicarboxylic acids such as phthalic acid, isophthalic acid, naphthalene-2,6-dicarboxylic acid, diphenyl-4,4-dicarboxylic acid, and 3-sulfoisophthalic acid. These other dicarboxylic acids can be used alone or in combination of two or more.

At least one of the diol component and the dicarboxylic acid component is composed of two or more kinds of diol and / or dicarboxylic acid in order to form a modified polyester. That is, when the diol component (1) is a single diol, two or more dicarboxylic acids containing at least terephthalic acid are used as the dicarboxylic acid component. In this case, the diol component is preferably an aliphatic diol. On the other hand, when the (2) diol component is two or more kinds of diols, as the dicarboxylic acid component,
Terephthalic acid alone or two or more dicarboxylic acids containing at least terephthalic acid are used. In this case, the diol component preferably contains at least an aliphatic diol.

In the above embodiments (1) and (2), a particularly preferable diol component among the aliphatic diols is 1,4-butanediol alone or at least 1,4-butanediol from the viewpoint of heat resistance in the sterilization process such as retort. Two or more kinds of diols containing 1,4-butanediol as an essential component. Examples of the diol capable of substituting a part of 1,4-butanediol include (a) an aliphatic diol containing at least diethylene glycol, particularly (a1) diethylene glycol, (a2) ethylene glycol and diethylene glycol, and (b) the following: The aromatic diol represented by the general formula [II] is preferable. (In the formula, R ₁ , R ₂ , R ₃ and R ₄ are the same or different and each represents a hydrogen atom or a methyl group, and l and m represent integers of surnames.)

In the aromatic diol represented by the above general formula [I], 1 and m are 1 to 10, preferably 1 to 5
Is an integer. Among the aromatic diols represented by the general formula [I], 2,2-bis (4-hydroxyethoxyphenyl) propane and 2,2-bis (4-hydroxydiethoxyphenyl) propane are particularly preferable.

The method of forming each single layer film used for the hot melt type adhesive film having a multilayer structure is as described below. That is, as a method for molding polyurethane, ordinary melt extrusion was performed using an extruder equipped with a T-die to obtain a film having a predetermined thickness. The polyester film was formed in the same manner to obtain a film having a predetermined thickness.
As a supplementary note, the method of molding the polyurethane and polyester films is not limited to this method, and it is also possible to mold by a commonly used method such as an inflation molding method.

As a method for producing a commercial double mark, a generally used processing method is as a lower layer of a roll of polyester satin cloth, and a continuous multilayer using a thermal laminator device. The polyurethane surface of the film is heat bonded between the heat rolls. The multi-layer film laminated polyester satin obtained in this manner is cut into a sheet shape and cut out to form predetermined characters, and a double mark is formed according to the procedure described in the text. -It is used by being heat-bonded to the wear or the like.

[0043]

EXAMPLES Hereinafter, using the specific examples of the present invention and comparative examples,
The effects will be described, but the technical scope of the present invention is not limited thereto.

Two types of hot melt type adhesive films according to the present invention: Polyurethane monolayer film (hereinafter abbreviated as PUF) E785MSJS made by Nippon Miractolan Co., Ltd. Flow initiation temperature: 86 ° C. Thickness 20, 50, 80, 100 μm Polybutylene terephthalate single Layer film (hereinafter PBT
Abbreviated as F) Asahi Kasei Corp. Hardic A3410 Melting point; 117 ° C. Thickness 20, 50, 80, 100 μm

The following two types of hot-melt adhesive films were used as solution-type polyurethane adhesives (AD, Toyo Morton, AD
-503) was used for dry lamination to form a hot-melt adhesive film having a multilayer structure. As a comparison, a PUF with a thickness of 100 and 130 μm and a thickness of 100 and 130 μ
m PBTF was tested. Mark place: Polyester satin Two mark places were adhered with the hot melt type adhesive film having the multi-layer and single-layer structures as described above. In the case of a multi-layer film, the PUF side was previously heat-laminated on the back side of one mark, and then the double mark was made so that PBTF was in contact with the surface of another mark. For the adhesion, a simple tabletop press machine was used and the adhesion conditions were 150 ° C., 0.1 kg / cm ² and 30 sec. . Various performance evaluations were performed using this adhesive sample. The results are shown in Table 1.

[Table 1] * According to JIS C-9606. From the results in Table 1, in Comparative Example, the adhesive strength is weak both in the normal state and after washing.

In the examples, the adhesive strength in the normal state is high, and the strength is slightly decreased even after washing,
The texture is also good. In addition, in Example-2, good results were obtained without bleeding, and the feeling and adhesive strength were particularly excellent.

Further, a hot melt adhesive (melting point: about 70 ° C.), which is a main material of ethylene-vinyl acetate copolymer, is hot-melt coated on the back surface of the double satin ground mark in each of the above-mentioned examples to obtain a hot melt adhesive double layer. A satin fabric was made. It could be easily ironed and sewn onto sportswear of cotton / polyester 65/35 blended spinning and showed the same practicality as a single satin ground mark.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location B32B 27/40 B32B 27/40

Claims (6)

[Claims] 1. A hot-melt type adhesive film having a multilayer structure in which upper and lower surface layers are composed of chemically different hot-melt adhesives. 2. A laminated processed product in which adherend surfaces which are physically or chemically different from each other are joined by the hot-melt type adhesive film according to claim 1. 3. The hot-melt type adhesive film according to claim 1, wherein the upper and lower surface layers are composed mainly of hot-melt polyurethane and polyester, respectively. 4. The flow starting temperature of the surface layer material is 80, respectively.
The hot melt type adhesive film according to claim 3, wherein the hot melt adhesive film has a layer thickness of 20 to 100 µm at 150 ° C. 5. A plain or marked tetron (or nylon) satin fabric comprising upper and lower two layers, wherein the polyurethane surface layer of the adhesive film is an upper satin layer by the hot melt adhesive film according to claim 3 or 4. A double satin processed product obtained by orienting the polyester surface layer of the adhesive film on the lower surface of the lower satin material, and laminating and adhering the same on the back surface of the ground. 6. A hot melt adhesive double satin ground product, wherein the back surface of the double satin ground product according to claim 5 is coated with a hot melt adhesive.