Multilayer sheet comprising fabric and resin, travel bag case made therefrom, and apparatus for manufacturing same

Abstract

According to the present invention, in some embodiments, since a first resin, a first fabric and a second resin are layered and coupled to each other and the first resin and the second resin are coupled by through-holes of the first fabric, the first resin and the second resin are uniformly absorbed and coated on the surface of the first fabric, and the first resin, the first fabric, and the second resin are closely coupled to each other, thereby enabling a unique color of the first fabric to be displayed on the exterior, a travel bag having very excellent compactness, tensile strength and impact strength to be manufactured, a travel bag having excellent quality to be provided even if manufacturing costs and manufacturing processes are decreased, and a travel bag capable of maximizing user convenience and the operability of the travel bag by remarkably reducing the weight to be provided.

Description

TECHNICAL FIELD[0001]The present disclosure relates to a multilayer sheet, a case of a travel bag, and a method for manufacturing the same. More particularly, the present disclosure relates to a multilayer sheet constituting a raw material of a case of a travel bag in which articles are contained, a case configured by press-molding such a multilayer sheet, and a case manufacturing device.BACKGROUND ART[0002]Travel bags are used to store and protect articles for travel. Commonly used travel bags have casters and handles installed thereon. Travel bags are largely classified into hard cases and soft cases according to the material of the bag body (case).[0003]Most soft cases are made of chemical fibers such as nylon, polyester, and the like, and have wires formed along the corners of the bag body in order to maintain the shape. Soft case travel bags have a drawback in that, if a wire is bent by an external impact, it is impossible to restore the same to the original condition.[0004]Har...

AI Technical Summary

Benefits of technology

The present disclosure describes a multilayer sheet for use in travel bags that includes a first resin, a first fabric, and a second resin. The first and second resins are made of polypropylene and are transparent. The first fabric is positioned at the center of the sheet, and the resins are coated on both sides, increasing the strength of the entire sheet. The unique color of the fabric can be seen without mixing or applying a master batch. The first fabric is made of polypropylene interwoven with warp and weft, which increases the tensile strength and impact strength of the sheet. The use of polypropylene instead of other materials reduces manufacturing costs and allows for mass production. The multilayer sheet has a reduced possibility of tearing, excellent elastically restoring power, and reduced whitening marks. The patent also describes a case manufacturing device that can produce the multilayer sheet and case for travel bags with excellent compactness, tensile strength, and impact strength.

Problems solved by technology

Soft case travel bags have a drawback in that, if a wire is bent by an external impact, it is impossible to restore the same to the original condition.

However, most conventional hard cases have a problem in that edges or corners thereof will be broken or recessed inward by impacts applied to the cases beyond the threshold of elastic restoration when the cases fall down or drop during a use or during a transportation while containing users' luggage.

In such a case, restoration is practically impossible, and, even if restored, traces of fracture such as white lines or wrinkle marks are left permanently.

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