JPH049646B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for forming a plurality of synthetic resin segments on a soft sheet such as cloth or a soft synthetic resin sheet.

(Prior Art and Problems) Conventionally, in order to reinforce areas that are prone to wear, such as elbows, shoulders, knees, and the corners of baggage, such as special athletic clothing and clothing for children who move rapidly, and objects that are susceptible to impact, Sew leather or rubber segments onto cloth with thread, or
Alternatively, the segments are pasted with an adhesive, but this process requires a lot of effort and time, and also has the disadvantage that the threads break or the adhesive force weakens during use, making it easy for the segments to separate from the cloth or the like.

The present invention improves the above-mentioned drawbacks of conventional composites and their manufacturing methods, and is easy to mass-produce without requiring much labor or time, is resistant to segment peeling, and is not only resistant to abrasion and shock. The aim is to provide a method for producing composites that can also be used for many other purposes.

(Means for Solving the Problem) A synthetic resin material is directly injected onto a soft sheet using an injection molding machine, and a plurality of synthetic resin segments are simultaneously fused and solidified directly onto the surface of the soft sheet.

(Example) Embodiments of this invention will be described with reference to the drawings.

FIGS. 1 and 2 are schematic diagrams for explaining manufacturing using an injection molding machine.

In the injection molding machine shown in FIG. 1, a mold 1 is provided with one or more recesses 3 having a desired shape, and each recess 3 is designed to communicate with the injection port during injection of the synthetic resin. . When using this molding machine, the fabric 5 is placed between the molds 1 and 2, the fabric 5 is pressurized by the molds 1 and 2, and the molten resin 4 is injected, and the synthetic resin is melted on the surface of the fabric. When the material is deposited and cooled and solidified, segments 6 in the shape of the recesses 3 of the mold 1 are formed on the surface of the fabric 5. At this time, the molten resin, etc. penetrates into the weave etc. of the fabric 5 due to the pressure and the adhesive force of the resin etc., and depending on the type of the fabric 5, if the fabric is stretched and the weave is expanded, the molten resin etc. The segments 6 reach the back surface of the fabric 5 and are fused and firmly fixed to the fabric 5.

Another example using an injection molding machine is the second
The mold 2a is provided with a desired shape and number of recesses 3a, and the fabric 5a is provided with small holes 7 at positions corresponding to the respective recesses 3a.
The molten resin material 4 passes through the small hole 7 and enters the recess 3a.
A mechanism such as a passageway is provided to allow the water to flow into the water. The fabric 5a is placed between the molds 1a and 2a and pressurized, and the molten resin material 4 enters the recess 3a of the mold 2a through the small hole 7 and is fused to the cloth 5a. When cooled, the shape of the recess 3a and A number of segments 6 are formed. According to this method, the marks left after removing runners, gates, etc. during injection molding can be removed from the segment 6.
It is aesthetically pleasing because it does not appear on the surface. In an injection molding machine, the other mold without a recess may be provided with a protrusion corresponding to the recess, or both molds may be provided with a recess. In the manufacturing method shown in FIG. 2, the outlet of the molten resin of the passage mechanism of the mold 1a corresponding to the small hole 7 of the fabric 5a is made to protrude slightly beyond the surface of the mold 1a, and the tip of the protrusion is connected to the small hole 7. If it is designed so that it can be inserted into the recess 3a, the molten resin and the like can smoothly flow out into the recess 3a. Moreover, if the mold 1a is also provided with a recess corresponding to the recess 3a of the mold 2a and communicated with the injection port of the molding machine, the fabric 5a
Segments 6 can be formed on both sides.

The communication passage mechanism between the recess and the injection port is not limited to that shown in FIGS. 1 and 2, and any known structure may be adopted.

The temperature of the mold of the injection molding machine is adjusted to an appropriate temperature depending on the material of the fabric and synthetic resin material.

What is shown in FIG. 3 shows an example of a composite made of synthetic resin and cloth produced by the above method, and the shape, size, and number of segments 6 are determined depending on the intended use of the composite. By providing a plurality of segments 6 and leaving fabric between each segment 6, the composite can be bent or deflected, which is convenient for use with objects whose shape changes due to movement or the like. Furthermore, segments can be formed on both sides of the fabric depending on the purpose of use.

In any of the embodiments, instead of the cloth 5, a soft sheet made of soft synthetic resin or the like can be used.

When a fluorescent substance such as a fluorescent dye is added to material 4, it emits light in dimly lit places or at night, and is useful for accident prevention and as a sign.

By adding glass, stone powder, etc. to the material 4, it is possible to form the segments 6 with even better wear resistance and impact resistance. Furthermore, if letters and figures are displayed on clothing, curtains, etc. using the segments 6, letters and figures that have a three-dimensional effect and will not disappear will be formed, and by adding dyes and pigments to the material 4, segments 6 of various colors will be formed. As a result, a composite with high fashionability can be obtained.

(Operations and Effects) In the method of forming a plurality of synthetic resin segments on a flexible sheet according to the present invention, the synthetic resin segments have a constant shape, size, and position depending on the mold, and can be processed by an injection molding machine. Since multiple pieces are fused directly to the soft sheet at the same time, composites of the same quality and standard can be easily mass-produced in a short time without requiring any manpower, and the segments are fused directly to the soft sheet. Therefore, it is possible to form segments that are difficult to peel off and have excellent durability, and by selecting the shape, size, number of segments, synthetic resin material, and fabric material, we can manufacture composites that can be used for a variety of purposes. be able to. Since multiple segments are fused together, it can be bent or deflected, making it excellent for use in deforming objects, and when fluorescent substances are added to materials such as synthetic resins, it can be used for clothing or display purposes. When used in objects, it helps prevent accidents at night and can also be used as nighttime signs.Adding glass powder etc. to materials such as synthetic resins creates segments that are more wear-resistant, erosion-resistant, and impact-resistant. , it can be used for a wider range of purposes, and if a compound made of a synthetic resin material with dyes added thereto is used for clothing, etc., it is possible to improve fashionability with three-dimensional, colorful patterns. As described above, the present invention has excellent effects.

[Brief explanation of drawings]

What is shown in the drawings shows an embodiment of the present invention, and FIGS. 1 and 2 are schematic diagrams for explaining a manufacturing method using an injection molding machine, and FIG. 3 is a schematic diagram for explaining a manufacturing method using an injection molding machine. 1 is a schematic plan view of an example of a manufactured composite; FIG. 1, 1a... Mold, 2, 2a... Mold, 3, 3a...
Recessed portion, 4...Synthetic resin material, 5, 5a...Fabric, 6...
Segment, 7...small hole.

Claims (1)

[Claims] 1. A soft sheet characterized in that a plurality of synthetic resin segments are simultaneously fused and solidified to the surface of the soft sheet by directly injecting synthetic resin at multiple locations on the surface of the soft sheet using an injection molding machine. Method of forming synthetic resin segments.