JPS63554B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for producing a nonwoven adhesive interlining with excellent drape properties that does not contain an interfiber binder inside the fleece.

Conventional technology and its problems Conventionally, the method for producing this type of adhesive interlining made of nonwoven fabric is to apply an interfiber binder such as acrylic acid ester emulsion or latex to a fleece made of various fibers, and then dry it. A method of fixing the fibers by gelatinizing the fleece, a method of entangling the fibers with each other using a high-pressure water stream or a high-pressure air stream, or a method of applying local heat-pressure treatment to the fleece to heat the fibers together. There are methods such as fusing at the pressure area, and the nonwoven fabric formed by these methods is used as an interlining base material, and a hot-melt adhesive is attached to the surface in the form of powder, dots, or spider webs. It is often used that is structured as follows. However, in the case of interlinings using interfiber binders such as synthetic resins and latex, the texture after lamination with the fabric is hard, and corners occur when the fabric is bent, making it difficult to use in places where drapability is required. is difficult to apply. In addition, in the case of interlining made of fibers intertwined by high-pressure water or high-pressure air flow, the drape properties after lamination with the fabric are excellent, but the interlining itself becomes thin and bulges due to the stress received during high-pressure processing. It lacks texture, and due to repeated washing, etc., billing occurs or the fibers tend to separate due to loosening of the fibers, which causes problems in terms of durability. In the case of an interlining in which fibers are locally bonded, the drapability after lamination with the fabric is excellent, but the crimp of the fibers that form the fused portion disappears, resulting in a lack of rebound resilience. At the same time, it is difficult to make a thin interlining, and there are restrictions on where it can be used, creating a need for the development of a versatile adhesive interlining.

Means for Solving the Problems The present invention solves the conventional drawbacks and has excellent rebound properties, excellent drapability, and washing resistance.
The purpose of the present invention is to provide a method for manufacturing an adhesive interlining that does not contain an interfiber binder inside the fleece, using a sublimable organic agent that swells or dissolves the fiber surface by heating, and using a sublimable organic agent that swells or dissolves the fiber surface by heating, and which contains soluble fibers in the agent. After the constructed fleece is impregnated and heated to form a temporarily bonded nonwoven fabric containing no binder that binds the fibers together, one side is coated with an iron-on adhesive in dots or a spider web pattern, and the other side is heated. A method for manufacturing an adhesive interlining is obtained in which a printed bond of resin or rubber is applied and dried, and the above-mentioned adhesive and a drug that adheres to the drying of the printed bond and the fibers are sublimated.

Embodiment An embodiment of the present invention will be described below based on the drawings.

Nylon fiber 2d x 51mm. 70% polyester fiber 3D x 51mm. Mixed fibers consisting of 30% fiber weight 30g/
m ² of fleece was prepared, and the fleece was sandwiched between gold steel and immersed in a 20% benzoic acid aqueous solution that shows solubility when heated to nylon fibers, and then rolled with a mangle roll until the benzoic acid adhesion amount was 10 g/m2. ² , and dried at a drying temperature of 70 to 100°C for 20 minutes, melting and bonding the cross-contact points of the constituent fibers to form a non-woven fabric 1 containing no binder as shown in the drawing. . The above non-woven fabric was processed using a paste dot processing machine to apply dots 2 (polyamide resin adhesive) having a diameter of 0.5φ from above at a number of 500 pieces/inch to 15 pieces.
g/m ² , and the lower part is printed using a printer roll.
Print bonds 3 having a diameter of 0.3φ and number of 500 pieces/inch are attached using an acrylic acid ester resin emulsion. The adhesion amount was 5 g/m ² and drying was performed at 100 to 150° C. for 5 minutes to sublimate the benzoic acid while drying the paste dot resin and print bond to form an adhesive interlining.

As a result of extracting and analyzing the benzoic acid remaining in the adhesive interlining, the value was less than 0.1 g/m ² , and it was found that it is safe to assume that most of the benzoic acid has sublimed.

Effects of the Invention Since the present invention is configured as described above, unlike conventional adhesive interlining manufacturing methods, there is no adhesion of the resin to the dipping equipment due to the impregnation bonding treatment by emulsion or latex, and there is no staining of the nonwoven fabric due to gum up. , it became possible to manufacture adhesive interlining with a relatively simple device, without requiring a high-pressure air flow generator.

Furthermore, the use of a sublimating agent has the advantage that substances other than those necessary for bonding the fibers to each other are sublimated by heating and do not remain.

Furthermore, 200g/g of the adhesive interlining obtained by the present invention
In a geozette adhesive press with a basis weight of m ² ,
The resulting bonded product was bonded at a temperature of 150° C., a pressure of 0.25 Kg/cm ² , and a bonding time of 10 seconds. It was highly resilient, had excellent drapability, and had a sufficient sense of fullness. Furthermore, when washing the product for 5 hours using a household washing machine, there was no occurrence of pilling on the non-adhesive surface after washing, and there was almost no change in the texture of the bonded product, indicating that the invention has excellent practical value.

[Brief explanation of the drawing]

The drawing is a sectional view of an adhesive interlining according to an embodiment of the present invention. 1... Nonwoven fabric containing no binder, 2... Dots, 3
...Print bond.

Claims (1)

[Claims] 1. Using an aqueous solution of benzoic acid as a sublimable organic agent, impregnate a fleece containing fibers that swell or dissolve the fiber surface with the agent when heated and deposit a predetermined amount, and then heat the fibers of the fleece. A temporarily bonded nonwoven fabric is formed by bonding only the cross-contact points between the fibers, and then an ironable adhesive is applied to one side of the nonwoven fabric in a dot or spider web pattern, and then to the opposite surface. 1. A method for producing an adhesive interlining, which comprises applying print bonding using rubber latex or synthetic resin emulsion and heating the adhesive, drying the adhesive and print bonding, and sublimating any chemicals remaining on the fibers.