JPH0819623B2 - Adhesive interlining and manufacturing method thereof - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an adhesive interlining material for clothing, which has a soft texture and excellent durability, and a method for producing the same.

(Prior Art) Conventionally, an adhesive interlining is generally formed on a non-binder non-woven fabric obtained by heat-bonding a non-woven fabric obtained by binding a fibrous web with an emulsion resin binder or a web containing low melting point fibers in a dot-like manner with an embossing roll. It is formed by adhering adhesive resin in a dot shape, and is used as an adhesive interlining material in dresses, suits, jackets, and the like.

(Problems to be Solved by the Invention) However, the adhesive interlining using these non-woven fabrics as the interlining base material has the following problems when adhered to the outer material. That is, in the former interlining using the emulsion resin binder, the adhesive resin is present on the resin binder layer that adheres the entire fiber layer of the web on the side in contact with the surface material, so There is a problem in that the amount of resin becomes so large that the product has a hard texture, and the comfort and functionality are not satisfied. Also, the latter adhesive interlining using no-binder non-woven fabric has a soft texture and has recently been marketed in large numbers, but the fibers are not fixed with a binder, and the heat-adhesive resin that is fixed in dots is the outer material. At the time of bonding, since the molten resin permeates the inside of the nonwoven fabric, it contributes to the bonding with the surface material, so it is necessary to increase the adhesion amount of the heat-adhesive resin in order to obtain a predetermined peel strength. Has the problem of becoming hard.

Further, in order to prevent the penetration of the heat-adhesive resin into the inside of the nonwoven fabric in solving these problems, a print bond is made with an acrylic resin on the opposite back surface of the heat-adhesive resin adhered in a dot shape. , In order to obtain a predetermined peel strength while reducing the application amount of the heat-adhesive resin,
Adhesive interlinings made by synchronizing acrylic resin are also commercially available. However, since the above-mentioned adhesive interlining material is mechanically synchronized, there is a problem that it is very difficult to adjust due to elongation of the non-woven fabric raw material and a lot of loss occurs.

An object of the present invention is to solve all of the problems of the above-mentioned conventional techniques, to provide an adhesive interlining material having a soft texture and excellent adhesive strength even for difficult-to-adhesive fabrics, and a method for producing the same. To do.

(Means for Solving Problems) That is, according to the present invention, a non-woven fabric sheet (mainly no-binder embossing type) used as an interlining substrate sheet is impregnated with an aqueous solution containing an electrolyte dissociated into metal ions and wetted. In the state, a heat-adhesive resin water-dispersed paste composed of a mixture of a heat-adhesive resin powder such as polyamide and polyester resin powder and a water-soluble acrylic resin insolubilized by metal ions is attached in a multi-point manner, and a nonwoven fabric of the water-dispersed paste is obtained. The problem is solved by obtaining an adhesive interlining in which the water-soluble acrylic resin only in the contact portion with the sheet is substitutionally insolubilized with metal ions and a method for producing the same.

(Operation) In the adhesive interlining of the present invention having the above-mentioned structure, as shown in FIG. 2, the thermo-adhesive resin 9 is adhered to the surface of the embossed non-woven sheet 3 in a dot shape, and the contact portion with the non-woven sheet surface is contacted. Only the water-soluble acrylic resin contained in the fixed thermo-adhesive resin in 1 is replaced by the metal ions that have been impregnated into the non-woven sheet in advance, and since it is formed with the insolubilized resin portion 12, it is bonded to the surface fabric. At this time, the softened and melted thermoadhesive resin is backed up by the insolubilized insolubilized resin portion, and approximately 100% of the adhered thermoadhesive resin contributes to the adhesion to the surface fabric without penetrating into the inside of the nonwoven fabric.
Therefore, in order to obtain a predetermined peel strength, the application amount of the heat-adhesive resin is about 1/2 of the conventional amount, and the object is achieved and the texture is not hardened at all.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, a web forming machine 1, for example, a card machine and a cross wrapper are used to synthesize synthetic fibers, for example, 6 nylon fibers 1.
5 denier x 38 mm (cut length) 100% spun, cross-laminated to form a web with a predetermined cotton weight, for example, 30 g / m ² , pass through an embossing roll 2 and heat-bond to form an embossed nonwoven sheet 3 To form. As shown in FIG. 3, the non-woven fabric sheet 3 is then impregnated with an aqueous calcium carbonate solution 4 (concentration 2%) that dissociates into metal ions by a dipping device 5, and the solid content deposition amount becomes 2 g / m ² by a squeezing roll. The heat-adhesive resin water-dispersed paste 6 containing a water-soluble acrylic resin, which is insoluble by metal ions having the following composition, is adjusted by a screen roll 7 and embossed with the metal ions. A predetermined amount of, for example, 20 g / m ² (dry solid content) was attached in a number of dots on one surface of the processed nonwoven fabric sheet 3.

[Heat adhesive resin water dispersion paste blended]

Polyamide resin powder 100 parts Plasticizer 20 parts Dispersant 20 parts Thickener 2 parts Ammonium acrylate 10 parts Total solids concentration 35%, viscosity 15000cps (2r.pm) The above nonwoven fabric sheet 3 is next introduced into the dryer 8. And 150 ℃
At the same time as drying and at the same time, the thermo-adhesive resin 9 attached in dots
After performing the calcium ion substitution insolubilization treatment of the water-soluble acrylic resin present in the non-woven sheet contact portion included in,
If necessary, dip into the softening treatment bath 10 with the following composition,
Flexible processing and extraction of excess water-soluble acrylic resin contained in the dot-like thermoadhesive resin are performed to form an adhesive interlining A having a date of 53 g / m ² and a thickness of 0.4 mm.

(Softening treatment compound) Aminosilicone resin 100 parts Fluorescent dye 1 part Total solids concentration 2%, DPU = 2%, WPU = 100% In addition, when softening treatment is not performed, only hot water treatment is performed to form an adhesive interlining. Sometimes formed.

FIG. 2 is a schematic cross-sectional view of the adhesive interlining of the present invention formed as described above. The thermoadhesive resin 9 is fixed to the embossed non-woven fabric sheet 3 in a number of dots to form a non-woven fabric. Only the water-soluble resin contained in the dot-shaped heat-adhesive resin present in the contact portion with the sheet forms the insolubilized resin portion 12 insolubilized by contact displacement with the metal ion, and the metal ion impregnated into the nonwoven sheet is It is completely removed by the softening treatment and has a multi-void portion 13.

Comparative Example Except for the metal ion impregnation step of Example, 20 g / m ² of the heat-adhesive resin water-dispersed paste alone (water-soluble acrylic was not added) was adhered, and otherwise the same fiber was formed in the same manner as in Example. Unit weight 51g / m ² (Fiber unit weight 30g / m ² , thermal adhesive resin 20g /
An adhesive interlining of m ² and amino silicone 1 g / m ² ) thickness 0.4 mm was formed.

FIG. 4 shows a schematic cross-sectional view of a comparative example formed in this way, in which the thermo-adhesive resin 14 adheres to the surface of the embossed non-woven fabric sheet 3 in spots, and partly penetrates into the non-woven fabric 15
To form an adhesive interlining.

Next, for comparison between the adhesive interlining of the present invention and the adhesive interlining obtained in the comparative example, an adhesion test and a texture test after laminating the surface cloth were performed.

Adhesion test Adhesion conditions: Roller type Temperature 155 ° C Pressure 3.0Kg / cm ² hours 10 seconds Table cloth: Rayon velvet Texture measurement: Kato Tekko shear and bending measurement The results obtained are shown in the table below.

(Effect of the invention) As will be apparent from the above test results, the adhesive interlining of the present invention has a thermoadhesive resin applied to the base nonwoven fabric sheet of approximately 100 without deeply penetrating into the fiber gap inside the nonwoven fabric sheet.
% Contributes to the adhesion with the cloth, so that a larger peel strength can be obtained as compared with the comparative example. Further, the fixing surface of the non-woven fabric sheet of the heat-adhesive resin fixed in a dot shape is backed up by the insolubilized water-soluble resin, and the hardening of the texture due to the penetration into the interior is prevented, resulting in a soft texture. In addition, the application amount of the heat-adhesive resin is about 1/2 of the conventional one, and the desired strength can be obtained, so even for difficult-to-adhesive fabrics, the heat-adhesive resin attachment amount can be increased without worrying about hand-curing, It has an excellent effect that an ideal adhesive interlining can be obtained in one step such that it can be applied to a material that has not been able to be conventionally handled.

[Brief description of drawings]

FIG. 1 is a schematic process diagram showing a method for producing an adhesive interlining according to the present invention,
FIG. 2 is a schematic sectional view of the adhesive interlining, FIG. 3 is a sectional view of an intermediate product of the adhesive interlining, and FIG. 4 is a schematic sectional view of the adhesive interlining of a comparative example. 1 ... Web forming machine, 2 ... Embossing roll, 3 ... Embossing non-woven sheet, 4 ... Calcium carbonate aqueous solution, 5 ... Immersion processing device, 6 ... Thermal adhesive resin water dispersion paste, 7 ... Screen Roll, 8 ... Dryer, 9 ... Thermal adhesive resin, 10 ... Soft processing liquid tank, 11 ... Embossing, 12 ... Insolubilized resin part, 13 ... Multi-void part, 14 ... Thermal adhesive property Resin, 15 ... Penetration

Claims (2)

[Claims] 1. An adhesive interlining in which a thermo-adhesive resin is fixed in a dot shape on one surface of an embossed non-woven sheet, and the non-woven sheet is impregnated under each dot-like thermo-adhesive resin that is in contact with the non-woven sheet. An adhesive interlining material comprising an insolubilized resin portion which is substitutionally insolubilized by metal ions dissociated from an aqueous solution. 2. A method for producing an adhesive interlining material, which comprises the following steps. (A) The first step of impregnating the embossed non-woven fabric sheet with an aqueous solution containing metal ions, (b) the one side of the non-woven fabric sheet impregnated with the aqueous solution, a thermo-adhesive resin powder and a water-soluble acrylic resin which is insolubilized by metal ions. Second step of adhering the mixed heat-adhesive resin water-dispersed paste in dots, (c) Drying the non-woven fabric sheet in which the water-dispersed paste is adhered in dots to consolidate the water-dispersed paste in dots, and a non-woven fabric. The third step of insolubilizing the water-soluble acrylic resin under the spotted water-dispersed paste in contact with the sheet by metal ions.