JP2925582B2 - Adhesive interlining excellent in uniformity and method for producing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an adhesive interlining having improved quality such as uniformity, dyeing property, elongation recovery property, washing resistance, dry cleaning resistance, etc.
And a method of manufacturing the same.

[Conventional technology]

BACKGROUND ART Adhesive interlining, in which an adhesive is adhered to a nonwoven fabric, has been spreading rapidly in recent years due to its quality characteristics such as lightness, no fraying, and excellent air permeability.

Conventionally, as a method for producing a nonwoven fabric for an adhesive interlining, a card method is almost used. That is, short fibers having a crimp of about 25 to 60 mm are carded by a carding machine, and then a nonwoven sheet is formed by a cross layer, a random webber, an air lay, or the like. Then, as a means for joining the non-woven sheet, a method of dipping in an adhesive solution or an aqueous dispersion, heat-fusing fibers composed of a low-melting-point polymer or a two-component polymer having a different melting point are mixed in advance and heat-fused. A method in which the fibers are melted and bonded to each other, a method in which the short fibers are entangled with each other by a needle punch or the like, a method in which the short fibers are entangled with each other by a high-pressure columnar water flow, and the like are used. As described above, a nonwoven fabric obtained by joining short fibers is widely known as a suitable nonwoven fabric for adhesive interlining.

However, the adhesive interlining obtained by adhering an adhesive to the nonwoven fabric by the card method still has the following disadvantages as interlining, and is not required for delicate feeling or severe consumption performance,
For example, at present, use is limited to uses such as work clothes, student clothes, and children's clothes.

Adhesive interlining made of conventional nonwoven fabric and wool, cotton, the fabric of which the outer material of woven or knitted fabric such as synthetic fiber is bonded by heating,
Since the nonwoven fabric has poor elongation recovery properties, the nonwoven fabric tends to lose its shape due to repeated elongation stress at the time of wearing, and is liable to be shrunk by physical actions such as rubbing and friction at the time of wearing. Furthermore, there is a problem in consumption performance such as a change in hand feeling due to wearing, washing, dry cleaning, and the like.

A suitable combination is selected according to the type of outer fabric and the required texture of the product for the type of fiber constituting the adhesive interlining, the basis weight, and the like.
Polyamide fibers such as nylon 66 and polyester fibers such as polyethylene terephthalate are often mixed. When the polyamide fiber is used alone, the feel is soft and does not impair the feel of the surface material, but the dimensional stability is poor. That is, in the case of bonding to a surface material having a small heat shrinkage, the interlining material shrinks more due to heating at the time of bonding, and uneven wrinkles occur in the surface material due to a difference in both shrinkage rates. Or it repeats expansion and contraction depending on the amount of moisture in the atmosphere due to the season,
There is a drawback that the adhesive integration with the outer material is broken and, in severe cases, peels off.

On the other hand, in the case of polyester fiber alone, there is no problem of lack of dimensional stability, but since the feeling is hard and the compatibility with the copolyamide hot melt resin having excellent adhesiveness is poor, the adhesive strength between the resin and the nonwoven fabric is poor. Is weak.

Therefore, in general, a card method nonwoven fabric in which a polyamide fiber and a polyester fiber are mixed is often used.
An adhesive interlining made of a nonwoven fabric in which a polyamide fiber and a polyester fiber are mixed often intentionally dyes only a polyamide fiber which can be easily dyed by normal pressure dyeing from the viewpoints of economy, dyeing fastness and the like. In this case, since the polyester fiber is not dyed, the obtained adhesive interlining becomes marbling, and when bonding with a dark colored outer material, the color of the adhesive interlining may affect the quality of the product.

Adhesive interlining made of nonwoven fabric by card method is easy to produce in a small scale by the card method process, so it is easy to change the raw material fiber, change the basis weight of nonwoven fabric, etc. according to various types of surface materials, and it is unique to the interlining field. Has the feature of being able to respond quickly to small lot production.

On the other hand, in recent years, there has been a tendency for softer and softer textures and thinner fabrics to be preferred, and in order to cope with this, a thinner adhesive interlining and a softer texture are required. Corresponding to this, the card method nonwoven adhesive interlining also corresponds to this, in addition to the conventional general basis weight range of 40 to 70 g / m2, ¹⁰ to 30 g / m2
thin, varieties of low weight per unit area have been developed, such as m ^2. However, in the case of such a thin coating, the card method nonwoven fabric has a drawback that it is difficult to obtain a uniform coating weight and spots are easily noticeable. Because of these spots, the covering material is poorly covered and the bonded outer material is seen through, and the so-called reverse bleeding phenomenon occurs in which the hot melt resin that has melted at the time of bonding oozes out on the back side where the interlining is bonded. A troublesome problem arises that the heating roll used becomes dirty. In addition, the strength is significantly reduced as the weight is reduced, and the product cannot be used for products that need to compensate for the insufficient strength of the outer material.

As described above, the conventional nonwoven fabric adhesive interlining has excellent features such as economy that can respond to sewing rationalization, is light and does not fray, has good air permeability, etc., but easily loses its shape, and is liable to be burned. wear, laundry, disadvantage is relatively large texture change due to dry cleaning, etc., and color mottled when consisting of combinations such as polyamide fibers and polyester fibers, and more generally 30 g / m ² or less of articles with thin However, the hot melt resin has disadvantages such as reverse bleeding property and insufficient strength due to insufficient covering property. At present, nonwoven fabric bonding interlinings which have improved these disadvantages have not been developed yet.

[Problems to be solved by the invention]

The present invention is based on a wet-process nonwoven sheet, and has a uniform basis weight, a high strength, a soft feel, an excellent elongation recovery property, a uniform color development, a good covering property, and an adhesive interlining without reverse bleeding of the adhesive. It is not intended to provide a manufacturing method.

[Means for solving the problem]

As a result of intensive studies to improve the above-mentioned drawbacks, the present invention is obtained by adhering short fibers of relatively short fiber length to each other by a wet method to form a nonwoven sheet, and attaching a hot melt adhesive thereto. It is a new adhesive interlining.

That is, the present invention is a nonwoven sheet formed by a wet method, wherein the length of short fibers constituting the sheet is 15 mm or less, and the ratio L / D of the length L to the diameter D of the short fibers is 800 to 800. 2,000, and the distance between the fiber entanglement points is 300 μm or less,
Bonding the core 10% elongation recovery rate of the sheet is 35% or more, and a hot-melt adhesive to the surface of the nonwoven sheet has excellent uniformity of basis weight 5 to 60 g / m ^2, characterized in that attached Ground, and as a production method for obtaining the same, a length L of 15 mm or less, a ratio L / D of the length L to the diameter D of 800 to 2,000 short fibers is formed into a papermaking sheet by a papermaking method, and then The short fibers constituting the papermaking sheet are entangled with each other by injection of a columnar water stream so that the distance between the fiber entanglement points is 300 μm or less, and then a hot melt adhesive is attached to the surface layer. 60
g / m ^2, a method for producing an adhesive interlining excellent in uniformity.

The nonwoven sheet constituting the adhesive interlining of the present invention is obtained by a wet method, the length of the fibers is short fibers of 15 mm or less, and the short fibers are required to be entangled with each other. . When the length of the short fibers exceeds 15 mm, the nonwoven sheet obtained by the wet method, that is, the papermaking method, has poor uniformity of the basis weight, and has an excellent uniformity of the basis weight which is an object of the present invention. I can't. In the case of relatively long staple fibers exceeding 15 mm, even if the fibers are entangled, the degree of entanglement is small, and even if the interlining is bonded, practically sufficient strength cannot be obtained. It does not satisfy the required performance as an adhesive interlining due to bleeding.

In the present invention, the short fibers need to be entangled. Even a nonwoven sheet obtained by a wet method consisting of short fibers having a length of 15 mm or less has no sheet strength at all in the state of a paper sheet that is not entangled at all and is simply laminated and aggregated,
Short fibers can slip through just by touching. Even if a hot melt adhesive is adhered to such a sheet, sufficient strength that satisfies the required performance cannot be obtained. In addition, there is a method of attaching a paper-made sheet in which short fibers are not entangled by immersing the binder in a solution or a dispersion, but in this case, the strength is high, but the hand becomes soft like a paper-like hand. The purpose of the present invention is to deviate from the purpose of the present invention, ie, the adhesive interlining of the feeling. That is, the present invention is 15 mm
Only with a non-woven sheet in which short fibers of the following lengths are entangled with each other, extremely excellent uniformity in weight, sufficient strength, no softness The required performance of the adhesive interlining can be satisfied. The entangled state is a state in which the short fibers are substantially entangled in a single fiber and / or a part thereof in a bundle, for example, the fiber entanglement disclosed in Japanese Patent Publication No. 62-2075. Expressing the measured value of the distance between points as an index is 300
It is preferably in the range of μm or less. If it exceeds 300 μm, there is almost no entanglement between short fibers, which is not preferable from the viewpoint of strength, which is one of the required properties of the adhesive interlining.

The material, single fiber fineness and shape of the short fibers used in the present invention are not particularly limited as long as the length is 15 mm or less, but the single fiber fineness is preferably 3d or less. Fibers having a fineness of more than 3d are not only in the direction where the uniformity per unit area is deteriorated when a sheet is formed by the wet method of the present invention, but also tend to have poor covering properties since the fineness is large, particularly 30 g / It is not preferable for a thin sheet having a thickness of m ² or less.

The relationship between the length of the short fiber and the fiber diameter used in the present invention is the length
In the case of 3d at 15mm or less, the length L (mm) and diameter D of the short fiber
The use of fibers having a ratio of (mm) and an L / D of 800 to 2,000 is preferable because the strength of the nonwoven sheet used in the present invention is further increased. L / D
Is less than 800, for example, the single yarn fineness is 2-3d and the length is 3
In the case of thick and short short fibers such as ~ 5 mm, the nonwoven sheet has a good basis weight uniformity but has a considerably low strength. vice versa
When the L / D exceeds 2,000, for example, when the single-fiber fineness is as thin as 0.1 to 0.5 d and the length is as thin as 10 to 15 mm, the spot mottling of the nonwoven sheet becomes slightly worse, and the strength is increased. Surface also tends to be lower.

The material of the short fiber used in the present invention is not particularly limited. Polyamide fibers such as nylon 6, nine 66, polyester fibers such as polyethylene terephthalate, polyacryl fibers such as polyacrylonitrile and copolymers thereof,
Regenerated cellulose fibers such as rayon and cupra cellulose, and natural fibers such as wool and cotton are preferably used. The fibers may be used as a single material or as a mixture of two or more kinds.

As described above, in the case of the nonwoven interlining made of the card method, it is difficult to use the soft-feel polyamide fiber alone from the viewpoint of dimensional stability, but the nonwoven sheet constituting the adhesive interlining of the present invention is used. Has a characteristic that the dimensional stability is good even when the polyamide fiber is used alone. Although the cause of this surprising feature is not known in detail, the nonwoven sheet constituting the present invention has a structure in which short fibers having a length of 15 mm or less are densely entangled. May be derived from the suppression of

A significant feature of the nonwoven sheet constituting the present invention is that the stretch recovery rate is excellent. For example, the recovery rate at 10% elongation of the conventional nonwoven fabric by card method is 10 to 25%, whereas that of the nonwoven sheet constituting the present invention is 35% or more. Although the reason why this feature appears is not known in detail, the nonwoven sheet constituting the present invention is such that the short fibers having a length of 15 mm or less are entangled, and thus the short fibers are relatively entangled in the vertical direction of the nonwoven sheet. It seems to have something to do with it.

As the hot melt adhesive constituting the adhesive interlining of the present invention, known adhesives such as polyamide-based, polyester-based, ethylene-vinyl acetate copolymer, and polyvinyl chloride-based adhesives are used. A polyamide hot melt adhesive is preferably used from the viewpoint of adhesive strength, washing resistance and dry cleaning resistance. The melting point of the hot melt agent is preferably 80 to 140 ° C. If the melting point is too high, it may be necessary to increase the temperature or pressure of the processing for bonding to the surface material or to lengthen the time, and the feeling of the adhesive interlining may be hardened. On the other hand, if the melting point is too low, the lamination with the outer material becomes easy, but a problem may occur due to low heat resistance when handling clothes. The adhesion amount of the hot melt adhesive is preferably 5 to 50 g / m ² . When the amount is less than 5 g / m ^{2, the} adhesive strength is insufficient. When the amount is more than 50 g / m ² , the feeling of the adhesive interlining becomes hard, which is not preferable. The adhesion area of the hot melt adhesive to the nonwoven sheet is preferably 10% or more. The attachment shape is preferably a dot shape, a sinter random powder shape, a dash shape, a spider web shape, or the like.

Next, a method for producing the adhesive interlining of the present invention will be described.

First, a filament or a tow such as a synthetic fiber or a regenerated fiber is cut into short fibers having a length of 15 mm or less. This is 0.1
Disperse in water at a concentration of ~ 5%. At this time, in order to improve dispersibility, it is preferable to add a small amount of a dispersant such as polyacrylamide and carboxymethyl cellulose. This dispersion is paper-formed by a paper machine such as a long net type or a round net type. The basis weight varies depending on the use of the interlining, that is, the type of the surface material to be bonded, but is preferably 5 to 60 g / m ² .

The obtained sheet is entangled with a number of high-pressure jet streams called columnar streams. This columnar water stream has a diameter of 0.01 to 0.
Spouted from a 3 mm nozzle, the water pressure varies depending on the processing speed, the basis weight of the sheet, etc.
Preferably, it is set to 100 kg / cm ² . Particularly preferably 15
Is a ~60kg / cm ^2. The distance between the nozzle holes is 0.05-8mm,
Further, it is preferably 0.1 to 5 mm. If the distance is smaller than 0.05 mm, the columnar water flows may interfere with each other, and the entanglement of the short fibers may be hindered. If the interval exceeds 5 mm, the number of nozzles required to obtain the necessary confounding is secured, so that the header for mounting the nozzles becomes large, which is not economical. The distance between the nozzle and the sheet is preferably 10 to 70 mm. If the diameter is smaller than 10 mm, the columnar water flow easily penetrates the papermaking sheet, making it difficult to effectively use the water energy required for the entanglement of the short fibers, and the entanglement is not sufficiently performed. If it exceeds 70 mm, the columnar water flow at the point where it hits the sheet expands, the water flow diameter increases, and the collision energy decreases. As a result, the short fibers are not sufficiently entangled with each other. It is also important to remove the water sprayed on the papermaking sheet in order to effectively perform the confounding by the columnar water flow. As a method, a supporting member such as a fine wire mesh is preferably placed under the papermaking sheet, and suction and dewatering is performed from underneath. The trajectory shape of the columnar water flow may be a straight line parallel to the traveling direction of the papermaking sheet, or a curved shape obtained by the rotational motion of the header with the nozzle attached or the vibrating motion reciprocating at right angles to the traveling direction of the sheet. There may be. Entangling by multiple overlapping circular water flow trajectories obtained by rotational motion is effective because the jet area of the water flow per sheet per nozzle is large and impairs the excellent uniformity of the papermaking sheet. This is particularly preferable because an effect that the trace of the water flow trajectory is hardly seen without being obtained.

The order in which the columnar water stream is sprayed on the papermaking sheet may be a method of alternately spraying the front and back surfaces, or a method of treating only one surface. In order to obtain a uniform sheet surface on both sides, it is preferable to process the sheet alternately.

The number of treatments is appropriately selected depending on the treatment speed, water pressure, and sheet weight. Changing the water pressure stepwise is also an effective method in that the trajectory of the water flow is hard to see. For example, it is preferable to first spray at a low water pressure and then spray at a higher water pressure. Furthermore, after processing at a predetermined water pressure required for confounding, between the nozzle and the papermaking sheet
An effective method is to insert a relatively fine wire mesh of 40 to 100 mesh, sprinkle the columnar water flow, and spray it onto the papermaking sheet. Furthermore, under a predetermined water pressure required for confounding, a relatively coarse wire mesh of 10 to 30 mesh is inserted between the nozzle and the papermaking sheet, and the columnar water flow is partially dispersed by the wire portion without sprinkling water. It is also effective to use a method in which the water flow is cut so as to give a point-like water flow locus on the sheet.

Making the trajectory of the water flow difficult to see by these methods is an effective means for enhancing the uniformity of the surface of the nonwoven sheet, which is one of the features of the present invention.

By doing so, an entangled nonwoven sheet of a sheet made of short fibers having a length of 15 mm or less can be obtained, having excellent basis weight uniformity, extremely soft feel, sufficient practical strength, and excellent elongation. Those having characteristics such as recoverability and small heat shrinkage can be obtained.

Next, the above-mentioned hot melt agent is attached to the nonwoven sheet. The method of adhesion is to first powder the hot melt resin, spray it on a roll having a large number of circular depressed holes, put the resin powder into the holes with a scraping knife, and rotate the roller to rotate the nonwoven sheet. Attaches uniformly to the surface in multiple points. Then, dry dot coating method, which melts and fixes by heating with hot air, infrared heater, etc., or after applying paste mixed with hot melt adhesive and binder in multi-point, film, spider web, etc., and then drying To fix the hot melt adhesive. The amount of adhesion is controlled to be 10 to 50 g / m ² .

〔Example〕

 Hereinafter, the present invention will be described in more detail with reference to Examples.

In the examples, the measured values are measured by the following methods, and all percentages are% by weight.

1) Tensile strength: JIS L-1096 strip method 2) Tear strength: JIS L-1096 single tongue method 3) Delamination strength: Cut a nonwoven sheet into a width of 2.5cm and a length of 13cm. Adhesive tape (D3 manufactured by Sony Chemical Co., Ltd.)
After 200) is adhered to the whole surface, it is pressed at 200 ° C. for 30 seconds at a pressure of 70 g / cm ² and bonded.

A cut is made between the adhesive tape and the nonwoven sheet of the measurement sample thus obtained, and both ends are grasped by checking with a high tensile strength tensile tester to perform measurement. The measurement conditions are set as follows.

Tensile speed: 10cm / min In this case, the adhesive tape has sufficient strength, and the adhesive tape and the non-woven sheet are firmly bonded, so the adhesive tape is cut when the sample for measurement and the adhesive tape are peeled off. The adhesive tape and the adhesive surface of the nonwoven sheet are not peeled off. The pulling force acts to tear one part of the nonwoven sheet away from the other. Therefore, the delamination strength of the nonwoven sheet can be measured by this method.

From the obtained stress-strain curves, three values with the larger strength values and three values with the smaller strength values were selected, and an average value of a total of six values was obtained. The number of tests on the measurement sample shall be 5. This measurement can be performed using the nonwoven sheet in the vertical direction (MD) and horizontal direction (CD).
The average value of the length and width is defined as the delamination strength of the nonwoven sheet.

4) Flexibility: JIS L-1096 45 ゜ The average value in the vertical direction (MD) and the horizontal direction (CD) of the cantilever method is defined as the flexibility.

5) 10% constant elongation recovery rate: Based on JIS L-1096 elongation elastic modulus A method, constant elongation rate was set to 10%, and 10% after three repetitions.
% Elongation modulus.

6) Thermal steam shrinkage: The shrinkage when the sample was treated with steam at 140 ° C. for 15 seconds.

7) Distance between fiber entanglement points: Measured on a photograph magnified 100 times with a scanning electron microscope according to the method disclosed in JP-A-58-191280, and expressed as an average value of 50 pieces. This value is a measure of the entanglement density between fibers, and indicates that the smaller the value, the denser the entanglement. The measurement method is to enlarge the nonwoven sheet and observe from the surface,
The point at which any two fibers f ₁ and f _{2 of the} constituent fibers intersect is defined as a ₁ , and the upper fiber f ₂ is traced at the point where the lower fiber intersects below the other fiber, the point where the the intersection and a _2. Hereinafter, similarly, a ₃ , a _4, ... Next, the linear horizontal distances a _{1 to} a ₂ , a _{2 to} a ₃ ,... Between the confounding points thus obtained are measured, and the average value is obtained.

8) Reverse bleeding property: One side of the adhesive interlining side bonded to the surface material of wool giravazine is touched by hand, and the degree of roughness is evaluated. What is felt is x.

9) Reverse bleeding adhesive strength: Adhesive interlining sample was applied to the surface of wool gabardine using a flat press machine at a temperature of 140 ° C and a pressing pressure of 300 g / cm ² , 1
Laminate by processing for 0 seconds. Further, a Bemberg lining is placed on the adhesive ground of the above-mentioned bonded fabric, and the bonding process is similarly performed with a flat press at a temperature of 140 ° C. and a pressure of 150 g / cm ² for 5 seconds. This sandwich sample is cut into a width of 2.5 cm and a length of 13 cm to prepare an adhesive strength measurement sample.
Adhesive strength is obtained by grasping the end of wool gabardine cloth with the end of Bemberg lining and the adhesive interlining bonded to the chuck of the tensile tester with a gripping margin of 1.5 cm and a tensile speed of 10 cm / min.
Measure under the following conditions.

Example 1 A multifilament having a single yarn fineness of 0.5 d of nylon 66 fiber was cut into 7.5 mm by a guillotine cutter. this
It was dispersed in water to a concentration of 0.3%. At this time,
Polyacrylamide was added as a dispersant to a concentration of 10 ppm. This aqueous dispersion is laid down with a fourdrinier paper machine.
The sheet was set at 30 g / m ² to obtain a sheet. This papermaking sheet, while the nozzle header nozzle caliber 0.1mmφ is column aligned at intervals of 2mm was mounted 10 columns by rotational motion 100rpm rotational speed, jetted columnar water flow pressure from the nozzle of 30kg / cm ² I applied a confounding process. An 80 mesh plain weave wire mesh was placed under the papermaking sheet, and suction dehydration was performed with a roots blower. The processing speed of the sheet was set at 6 m / min, and the distance between the nozzle and the sheet was set at 50 mm. Subsequently, the same entanglement treatment was performed on the back surface of the sheet. Subsequently, a 60-mesh plain-woven wire mesh was inserted between the nozzle and the sheet, and the nozzle was sequentially sprayed from the same nozzle header onto the front and back surfaces of the sheet while rotating the header at 300 rpm with a water pressure of 15 kg / cm ² .
The properties of the non-woven sheet subjected to such an entanglement treatment are as shown in Table 1, and the surface has no surface traces of columnar water jets, excellent surface uniformity without spots, and extremely soft. It had a feeling and was excellent in elongation recovery.

This non-woven sheet is colored with a blue acid dye using a beam dyeing machine.
Stained at 90 ° C for 60 minutes. After drying, using a dot coating machine, apply 17 points / 2.5 points of polyamide hot melt adhesive.
4cm density 11g / m ² adhered to the, 130 ° C. using a pin tenter
And fixed by melting. The physical properties of the adhesive interlining obtained by adhering the adhesive to the nonwoven sheet are as shown in Table 1, and a uniformly dyed product without color spots was obtained.

The adhesive interlining and the surface material of wool gabardine were treated using a flat press machine at a temperature of 140 ° C. and a pressure of 300 g / cm ² for 10 seconds, and then bonded. The outer material did not show through from the bonded interlining, and even if the surface of the interlining was touched by hand, there was no roughness due to reverse bleeding of the adhesive. Furthermore, just in case, place Bemberg lining on the surface of the adhesive interlining bonded to the outer material, and use a flat press machine at the same temperature of 140 ° C.
The adhesive treatment was performed at a pressure of 150 g / cm ² for 5 seconds, but the Bemberg lining and the adhesive interlining did not adhere at all and did not adhere. The present interfacing indicates that short fibers despite extremely low basis weight of 30 g / m ² is very uniformly distributed and densely entangled, with excellent performance unprecedented as interfacing It was a thing.

Comparative Example 1 Using a nylon 66 fiber having a single fiber fineness of 1d and a length of 30 mm, a papermaking sheet having a basis weight of 30 g / m ² was obtained using the same papermaking machine as in Example 1. At this time, the dispersibility of nylon 66 short fibers in water is not good, and the short fibers are not spread in some places,
There were lumps of entangled short fibers. The papermaking sheet was entangled with the same columnar hydroentanglement device as in Example 1 under the same conditions.

In the same manner as in Example 1, the physical properties of the adhesive interlining obtained by applying an adhesive to the entangled nonwoven sheet as shown in Table 1 are as shown in Table 1;
The heat shrinkage was significantly inferior to the adhesive interlining of the present invention obtained in Example 1.

Further, the reverse bleeding property of the adhesive when bonded to the surface material under the same conditions as in Example 1 was evaluated. The roughness is severe,
In addition, the reverse bleeding adhesive strength between the bonded fabric and the Bemberg lining resulted in 30 to 60 g / cm.

Comparative Example 2 An acrylic ester-butadiene copolymer-based emulsion, Luckstar DM801 (trade name of Dainippon Ink Co., Ltd.) was applied to the sheet before entangling by the columnar water stream obtained in Example 1 with an adhesion amount of 15. %, And dried by heating. Further, in the same manner as in Example 1, the adhesive was attached by dots to obtain an adhesive interlining. The physical properties of this adhesive interlining are shown in Table 1, and although it has the minimum strength for practical use, the feeling is vapor-like and extremely hard.

When the reverse bleeding property of the surface adhesive and the adhesive was evaluated for the adhesive interlining under the same conditions as in Example 1, no roughness was felt and no adhesion to the Bemberg lining occurred.

Comparative Example 3 50% of nylon 6 fiber with a single fiber fineness of 2d and a short fiber length of 32mm
And 50% of polyester core-sheath type heat-fusible fiber (Melty 2080 Unitika Ltd.) having a single fiber fineness of 4d and a short fiber length of 51 mm were kneaded, and a wrap of 30 g / m ² was obtained by a card method.
Then, press the embossed metal roll at a temperature of
A heat-sealing process was performed under the conditions of 70 kg / cm ² to produce a card method nonwoven fabric. After dyeing this nonwoven fabric in blue with a beam dyeing machine in the same manner as in Example 1, a polyamide hot melt adhesive was applied at a density of 17 points / 2.54 cm at 11 g / m ² ,
It was melted and fixed at 130 ° C. using a pin tenter. The physical properties of this adhesive interlining are as shown in Table 1, and the quality was ugly due to the spots caused by the spots, strength, elongation recovery, hand,
Both were significantly inferior to the adhesive interlining of the present invention obtained in Example 1.

Further, the cloth obtained by laminating the adhesive interlining and wool gabardine under the same conditions as in Example 1 had reverse bleeding of the adhesive on the surface of the adhesive interlining, and had a rough feeling when touched by hand. In order to know the degree of reverse bleeding, a bonding process was performed on the Bemberg lining in the same manner as in Example 1. The Bemberg lining and the adhesive interlining are bonded to each other, and the reverse bleeding has an adhesive strength of 25 to 50 g / cm, and the adhesive on one side of the adhesive interlining oozes out on the back surface of the interlining when being bonded to the outer material. Showed that. In particular, bleeding was noticeable in the low-weight area due to the spots, and it was found that this area was adhered to the Bemberg lining.

Example 2 Two types of short fibers of polyethylene terephthalate fiber having a single yarn fineness of 1 d, a short fiber length of 10 mm, a single yarn fineness of 0.1 d, and a length of 5 mm were prepared. These two types of single fibers were dispersed in water in equal amounts of 1: 1 so that the dispersion concentration in water together was 0.1%. At this time, 10 ppm of polyacrylamide was added. The obtained dispersion was uniform, and a state was observed in which the two types of short fibers were uniformly mixed.

This slurry was made in the same manner as in Example 1 and had a basis weight of 25 g /
to obtain a papermaking sheet of m ^2. This papermaking sheet was entangled with a header equipped with the same columnar water flow nozzle as in Example 1. Processing speed is 8m / min, spacing between nozzle and papermaking sheet is 50m
m, the nozzle header was rotated at 200 rpm, and a columnar water stream was jetted at a water pressure of 40 kg / cm ^{2 under} the condition that a stainless steel 16 mesh plain woven wire mesh was inserted between the nozzle and the papermaking sheet. A stainless steel 80-mesh plain woven wire mesh was placed under the papermaking sheet, and dewatered by suction with a roots blower. The confounding treatment under the same conditions was applied to the opposite side of the sheet-forming sheet. Subsequently, further reversed the papermaking sheet, using the same nozzle headers at pressure 10 kg / cm ^2, a 80 mesh stainless steel plain woven wire mesh inserted between the nozzle and the papermaking sheet instead of wire mesh of 16 mesh, the nozzle 500rpm header
And a columnar water stream was sequentially sprayed on the front and back surfaces of the papermaking sheet to perform a confounding treatment. The physical properties of the non-woven sheet after being entangled after drying are as shown in Table 1;
It was extremely excellent in terms of soft feeling, elongation recovery, heat shrinkage and the like. The reason why it shows a very soft feeling even though only polyethylene terephthalate short fibers are used is that the ultrafine yarn of 0.1d is mixed, and the short fibers are short and oriented perpendicular to the sheet surface. This is probably because there are many confounding parts.

Then, the entangled non-woven sheet is treated with a beam dyeing machine.
The same adhesive as in Example 1 after dyeing with a disperse dye at 120 ° C. for 60 minutes,
Using a dot coating material, a hot-melt adhesive was applied in a dot-like manner at a density of 17 points / 2.54 cm and an adhesion amount of 11 g / m ² .

The physical properties of the adhesive interlining are as shown in Table 1, and the adhesive interlining had a uniform and colorless coloring.

The adhesive interlining and the outer surface of the cotton fabric were bonded together with a steam iron at 130 ° C. There was no reverse bleeding phenomenon of the hot melt resin on the interlining side, no roughness was felt even when touched by hand, and no reverse bleed adhesion to the Bemberg lining occurred. Also, the outer material was not seen through when viewed from the interlining side. Furthermore, a wearing test, a dry cleaning, a washing test, and the like of the upper garment to which the adhesive interlining was attached were also evaluated, but no deformation or breakage was observed.

[Effect of the Invention] The adhesive interlining of the present invention is excellent in uniformity of basis weight, high strength, soft feeling, elongation recovery and the like. Further, it has a novel excellent performance in terms of the uniformity of color development of the dyed product, the covering property and the reverse bleeding property of the adhesive.

Claims (2)

(57) [Claims] 1. A non-woven sheet formed by a wet method, wherein the length of short fibers constituting the sheet is 15 mm or less, and the ratio L / D of the length L to the diameter D of the short fibers is 800 to 2000. The distance between the fiber entanglement points is 300 μm or less, the 10% elongation recovery of the sheet is 35% or more, and the hot melt adhesive is attached to the surface of the nonwoven sheet. Adhesive interlining excellent in uniformity with a basis weight of 5 to 60 g / m ² . 2. The method according to claim 1, wherein the length is not more than 15 mm, and the ratio of the length L to the diameter D is L /
D is formed a sheet from a short fiber of 800-2000 by a papermaking method, then the short fibers constituting the papermaking sheet are entangled with each other by injection of a columnar water flow, the distance between the fiber entanglement points is 300μm
A method for producing an adhesive interlining having excellent uniformity with a basis weight of 5 to 60 g / m ² , wherein a hot melt adhesive is adhered to the surface layer after the following.