JP2005304628A - Manufacture of waterproof shoes - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To impart waterproofness to a sewn section of seams and bonded sections of shoe materials equipped with a certain degree of waterproofness, such as an artificial leather or a natural leather. <P>SOLUTION: When waterproof shoes are manufactured by sewing a waterproof artificial leather or a natural leather which has been cut into a specified shape, an indeterminate sealing material 3 is coated at the section of stacked leathers at the seam section, and the leather and a sewing thread at the sewn section are covered with the indeterminate sealing material. Also, the sewn section and the bonded section can demonstrate a remarkably excellent waterproofness by closing the gap. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to the manufacture of waterproof shoes, and more particularly to a method of manufacturing shoes that provides waterproofness to seam stitching portions and joint portions of shoe materials. The waterproof shoe material referred to in the present invention broadly means a shoe material having a certain degree of waterproof property such as artificial leather and natural leather.

  Conventionally, a waterproof shoe material or natural leather, which is generally called artificial leather, is stitched to form a waterproof shoe. In these conventional waterproof shoes, latex or soft adhesive resin is applied to the outer surface or inner surface of the stitched portion after making the shoe in order to compensate for the reduced waterproofness of the stitched portion at the joint of the artificial or natural leather. Applying or sticking waterproof tape from the inner surface of the stitched part, water-repellent treatment to leather as a shoe material, water-repellent treatment of sewing thread used for sewing, etc. alone or Implemented in combination.

  However, in such a conventional waterproofing imparting means, if the latex is applied to the outer surface of the stitched portion, the appearance of the shoe is impaired, and if the resin is applied to the inner surface or a waterproof tape is applied, Not only is the comfortable feeling worse, but also the waterproof ability and durability are not sufficient. Moreover, even if a water-repellent treatment is applied to the joint portion of the leather and the suture thread, the waterproofness of the suture portion is considerably lower than that of the leather body.

  In particular, when a waterproof tape is applied or an adhesive resin is applied, the waterproof tape or adhesive resin is not sufficiently adhered due to the fine irregularities on the surface of the waterproof shoe material or the surface of natural leather. It was found that water penetrated into the water and the waterproofness deteriorated.

  The present invention has found that waterproofness can be secured by applying an amorphous sealing material to a portion where a waterproof shoe material or natural leather is laminated at a stitched portion. The present invention is intended to solve the problems of the prior art. For example, as shown in FIG. 2, when manufacturing waterproof shoes by stitching waterproof artificial leather or natural leather cut into a predetermined shape, an amorphous sealing material is applied to the leather portion laminated at the joint. It was found that by covering the leather and the sewing thread of the stitched portion with an irregular sealing material and closing the gap, the stitched portion and the joint portion exhibit outstanding waterproof properties.

  The waterproof shoes in the present invention broadly mean shoes that require a certain level of waterproofness, such as waterproof shoe materials called artificial leather and leather shoes manufactured using natural leather.

  Further, in the present invention, the stitching refers to a general shoe sewing type, and in these sewing types, an irregular sealing material is provided between the waterproof shoe material and the natural leather where the stitched portions are stacked. By applying and drying and fixing, it is possible to ensure a remarkably excellent waterproof property at the stitched portion. In addition, between the waterproof shoe material and natural leather laminated at the stitching portion refers to a gap and a seam portion serving as a water passage through which water enters from the outside.

  Since the present invention uses an irregular sealing material, it can be applied to complicated shapes. Therefore, it can be used in finished products and at a high degree of completion.

  Moreover, even if a waterproof artificial leather shoe is immersed in water at a depth of 50 mm for 2 hours, water does not enter inside the shoe, and the function as a waterproof shoe is fully exhibited.

An embodiment and shoes will be described based on FIGS. 1 and 2 as an embodiment of the present invention.

  In Fig. 1, 1 is the seam, 2 is the joint, and after applying an irregular sealing material to both parts, apply with a spatula, cloth, paper, etc. It is something to be removed. After application, the shoe is placed in a stationary state in order to dry the amorphous sealant. FIG. 2 shows a state in which an amorphous sealing material is applied and fixed.

It is the perspective view which showed the location which apply | coats an amorphous sealing material. It is sectional drawing which showed the state which apply | coated the amorphous sealing material.

Explanation of symbols

1, 5 stitches 2, 6 joint 3 irregular sealing material 4 waterproof shoe material

Claims (1)

When manufacturing waterproof shoes by stitching waterproof artificial leather or natural leather, the joint part of the stitched leather laminated at the seam part, the seam, and the sewing thread are covered by applying an amorphous sealing material, It also closes the gap.

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