JPS61225368A - Connection of cloth like article - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method of substantially seamlessly joining woven or nonwoven fabrics using fluid jets.

[Prior Art] The present inventors have previously proposed a technique in which multiple pieces of cloth are sewn together using jets of high-pressure fluid (Japanese Patent Application No. 59-114).
180), this suturing technique involves arranging multiple pieces of cloth to be sewn together and applying a small diameter high-pressure fluid to the fibers extending from the cloth itself or the fibers placed on the cloth. This method involves ejecting a jet at high speed and causing the fibers affected by the jet to penetrate into the lower layer and become entangled.The fibers used to join the fabrics to be N-combined are made of other fibers or loose fibers of the fabric itself. It is assumed that you will.

However, subsequent experimental research by the present inventors related to the above technology revealed that when a thin high-pressure jet is applied to a woven or nonwoven fabric that does not have free fibers, the jet causes some of the fibers in the woven or nonwoven fabric to be removed. It has been discovered that the fibers are unwound into a free state, which can be entangled with fibers in another woven or nonwoven fabric to form a strong bond.

[Problems to be Solved by the Invention] The present invention has been made based on the above-mentioned findings, and is a method of sewing a cloth-like material having substantially no free fibers into an almost seamless state by a simple means. The purpose of the present invention is to provide a method that can firmly integrate laminated cloth-like materials.

[Means for Solving the Problems] In order to achieve the above object, the joining method of the present invention arranges cloth-like materials having substantially no free fibers in close contact with each other, and applies high pressure from above the cloth-like materials. The fluid is ejected at high speed as a small-diameter jet, and the force of the jet unwinds some of the fixed fibers in the upper layer, and at the same time, the unraveled fibers are transferred to the fibers in the lower layer. The method is characterized in that the cloth-like objects are joined at the position where the jet acts on the cloth-like objects by penetrating and intertwining and moving the jet flow relatively along the surface of the cloth-like objects.

To explain more specifically, the cloth-like object to be joined in the present invention has each of its constituent fibers fixed within the cloth-like object by some means, and does not have substantially free fibers. It is something. Each # in the cloth-like material above
j11 Female fixation means, for example, means such as twisting a plurality of fibers together or joining the intersections of fibers with resin, glue, etc. when constructing a nonwoven fabric.

The jet stream of high-pressure fluid that is injected onto the cloth-like material is generally a fluid pressurized to about 100 kg/am' or more.
It is jetted at high speed from a nozzle with an inner diameter of about 0.01 to 0.0 am, preferably from a nozzle with an inner diameter of about 0.04 to 0.5 la. Conditions are selected accordingly. That is, the fluid itself acts on the cloth-like material, and its acting force must unravel a portion of the fixed mfa within the cloth-like material, so that the diameter of each fiber constituting the cloth-like material is If it is too large in comparison, the desired purpose cannot be achieved, and if it is too small, the desired acting force cannot be obtained.

The jet from the nozzle may be ejected intermittently or continuously, and it is generally suitable to use a liquid such as water as the ejected fluid. A mist containing the liquid in the form of water is also effective. Furthermore, in the case of materials for which a sufficient sutured state can be obtained even with a weak jet, the action of air flow is also effective.

When the above-mentioned jet stream is injected onto a cloth-like object placed in close contact with each other, the jet wave acts on the fixed fibers in the upper layer of the cloth-like object, for example, when the fibers are fixed by twisting a plurality of fibers together. Forcibly pulls out a part of the am, and if the intersection of the am and other fibers is joined with resin, glue, etc., the joined part is separated, leaving the part in a free state. At the same time, one end of the free fiber enters into the lower layer fabric, and the fiber and the thread or #! In order to entangle the fibers, the plurality of cloth-like materials are strongly joined.

In particular, the narrow jet of the high-pressure fluid effectively acts to entangle the loose fibers with the threads or fibers of the underlying cloth-like object, and this tendency causes the cloth-like object to be sewn to be made of metal. The effect of the jet flow, which is placed on a support plate and reversed on the support plate, is also significant in entangling the loose fibers with the underlying fabric.

In addition, as is required for various types of endless belts made of non-woven fabrics, for example, there is a technology for joining cloth-like materials in a virtually seamless state and with a strength comparable to that of the cloth-like materials themselves. is in demand in various technical fields such as the finishing process of heavy textiles and the paper manufacturing process.

However, when some of the fibers in a woven fabric or nonwoven fabric are unwound by the jet stream described above and entangled with the fibers in another woven fabric or nonwoven fabric, suturing occurs as in the case of using a sewing machine or other suturing means. Foreign substances such as threads do not appear on the outer surface, and the surface condition is almost the same as before joining, so the edges of the cloth to be joined at the joints of the cloth can be appropriately treated. By doing so, it is possible to join them almost seamlessly.

Furthermore, the above-described bonding method is applied to the entire surface or over a wide area of a plurality of mutually polymerized cloth-like materials, that is, a large number of parallel jets are applied to the polymerized cloth-like materials at narrow intervals. By applying or applying a base-like jet action, extremely strong bonding of cloth-like materials can be achieved.
Alternatively, the cloth-like portion can be made entirely or partially thicker.

Next, the method of the present invention will be explained in more detail with reference to the drawings.

FIG. 1 shows an example of the configuration of a suturing device used for carrying out the present invention.

In this suturing device, cloth-like materials 1.2 having substantially no free fibers are stacked on top of each other on a horizontally installed metal support plate 3, and a nozzle 4 is guided and driven. Device 5
While traveling in the horizontal direction, a thin high-pressure jet 6 is ejected so as to interact with the above-mentioned cloth-like material. Reference numeral 7 denotes a piston type high pressure generating device, from which water from the water storage tank 8 is ejected at high pressure in a pulsating flow state.

Support plate 3 on which a cloth-like object is placed when jetting high-pressure fluid
1 is usually constructed from a metal plate, but a plate with many four stripes or a perforated plate can also be used to discharge the injected fluid. This support plate 3 is designed so that even if high-pressure fluid is injected onto a cloth-like object, the cloth is supported by the support plate to prevent it from being damaged, and the reflection of the jet flow gives the fibers a strong entangled state. It's something that works.

A plurality of cloth-like materials 1 stacked together by such a suturing device
．． When sewing 2 together, some of the fibers in the upper layer cloth 2 are unwound and become as if they have fluff on the lower surface side, so that a large number of fibers that have stretched out are attached to the lower layer cloth 2. be intertwined.

When attempting to join two cloth-like articles 1 and 2 seamlessly, the fibers at the ends 1 & 1a of the cloth-like article 1 are unwound in advance, and then the fibers at the ends 1 & 1a of the cloth-like article 1 are unwound to the lower layer threads or fibers by a jet stream. What is necessary is to entangle them, and then turn the upper and lower layers upside down and entangle the edge 2a of the cloth-like material 2 with the cloth-like material l by the same means.

2 and 3 show the case where the present invention is applied to the formation of a tubular body.

When forming this tubular body, the tape-like cloth body lO is wound around the core metal 11 as shown in FIG. let The effect of the jet flow is the same as described above, and the core metal 11 functions in the same manner as the support plate 3.

In addition, when forming the above-mentioned tubular body, the tape-like cloth body lO is spirally wound around the core metal 11 as shown in FIG. It can be sutured at a spiral suture line 13. Furthermore, it is also possible to wrap a tape-like cloth body arranged parallel to the core metal 11 in multiple layers around the core metal 11 and stitch the circumference in a spiral shape.

Next, an experimental example of the method of the present invention will be shown.

Filaments spun from a large number of parallel spinnerets are randomly assembled to form a web, which is then treated with an adhesive to create a spinning-type dry nonwoven fabric (basis weight: 93 g/rn').
) samples were stacked in two layers, and the entire surface of the material was subjected to jet treatment using the apparatus shown in FIG. 1 under the jet treatment conditions shown in Table 1.

Table 1 Jet treatment conditions (fluid used; water) Tensile test results obtained by simply stacking two samples before jet treatment, and tensile test results of jet treatment fabric obtained by joining two samples together by jet treatment. , are shown in Table 2 for comparison.

Table 2 Tensile breaking strength (kg) per sample width 1c+w
(Note) Tensile test conditions Test length: 10cm, sample width 2c+s, tensile speed 20mm
As is clear from the experimental results of /sin or more, the jet treatment according to the present invention can increase the tensile breaking strength several times that of the sample before treatment.

[Effects of the Invention] As detailed above, according to the present invention, a cloth-like material having substantially no free fibers can be fabricated by using a cloth or the like or a 2M thread of a sewing machine by a simple means. It can be joined almost seamlessly without appearing on the surface,
It can also be effectively used to thicken a plurality of cloth-like materials.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram of a suturing device used in carrying out the present invention;
The figure is a configuration diagram of another suturing device, and FIG. 3 is a perspective view illustrating a suturing mode. 1.2...Cloth-like material, 4...Nozzle, 8...High pressure jet.

Claims (1)

[Claims] 1. Cloth-like materials having substantially no free fibers are placed in close contact with each other,
High-pressure fluid is ejected at high speed as a small-diameter jet from above these cloth-like materials, and the force of the jet unwinds some of the fixed fibers in the upper layer of cloth, and at the same time, the unraveled fibers are The method is characterized in that by penetrating and entangling the fibers in the underlying cloth-like object and moving the jet stream relatively along the surface of the cloth-like object, the cloth-like object is sutured at the position where the jet act is applied. How to join cloth-like materials.