JPH0478724B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing underwater and water suits such as wet suits such as surf suits or diving suits, and dry suits.

Conventionally, in wetsuits, synthetic rubber bellows-like fabric is placed in areas that correspond to joint bending and stretching areas such as the shoulders and elbows, allowing it to effectively expand and contract as the body bends and stretches, providing good mobility. A wetsuit with a 30-degree angle has been proposed.

Furthermore, we have designed the above from an ergonomic standpoint to accommodate subtle movements of each part of the body, such as muscle contractions and skin contractions, without limiting it to joint bending and stretching areas such as shoulders and elbows. Recently, the idea of arranging jagged fabrics all over the body to improve the elasticity and mobility of the whole body has been spreading.

In such cases, the above-mentioned bellows-shaped dough has conventionally been obtained by press-vulcanizing and molding foamed sponge rubber having a closed cell structure using a mold with a press surface formed into a bellows-like shape. That is, conventionally, raw rubber is first vulcanized and foamed to a desired size, and then second vulcanization is performed for the purpose of stabilizing the state of the bubbles, and the foaming is completed during the second vulcanization.

Next, it was sliced thinly and formed into a bellows shape using a hot platen press or the like. This will be explained in detail with reference to Fig. 1 of the attached drawings. The unvulcanized raw rubber G is heated to, for example, about 120°C to undergo primary vulcanization, and the volume is expanded by uniformly vulcanizing it to a certain extent without completing foaming. process). Next, the temperature was raised to about 150℃ and secondary vulcanization was performed for about 15 minutes to further expand the volume and complete foaming of the sponge rubber body.
(Process of) obtaining S′.

It is said that bubble stability is achieved in this process. After stabilizing, the above sponge rubber body
S' is cut to a desired size to obtain planar sponge rubber pieces S' ₁ , S' ₂ , S' ₃ . . . Furthermore, the flat sponge rubber pieces S′ ₁ , S′S′ ₂ , S′ ₃
. . . is sequentially pressure-vulcanized using a hot platen press etc. formed into a bellows shape (process) to form a bellows-shaped fabric X.
was obtained (the process of).

However, at the stage of secondary vulcanization, the above-mentioned sponge rubber has already completed foaming uniformly, and in order to further pressure vulcanize it and form it into a bellows shape, it is necessary to Depending on the temperature, time, and pressure, the size of the bubbles may be disordered or the distribution of the bubbles may become uneven.Also, since foaming is completed, it may not fit into the mold, resulting in the desired jagged shape,
However, it was difficult to obtain the desired characteristics.

The present invention has been made in view of the above-mentioned problems, and its gist consists of a step of cutting raw rubber such as unvulcanized chloroprene-based synthetic rubber into a plurality of raw rubber pieces, and raw rubber pieces,
A process of obtaining a piece of sponge rubber by primary vulcanization, and a process in which the sponge rubber piece which is in the above-mentioned primary vulcanization state but has not yet completed foaming is further processed on both sides while completing foaming by secondary vulcanization mold pressure. A method for manufacturing a suit for underwater and water use, which comprises a process of forming the main body material of a suit into a bellows shape, and is characterized by sewing a suit using the bellows-like main body material, and its purpose is However, in order to shorten the manufacturing process and lower manufacturing costs in the manufacturing process of suits that use jagged fabric, it is possible to shorten the manufacturing process and reduce manufacturing costs. To provide a manufacturing method for a suit for underwater and water use.

Next, an embodiment of the present invention will be described in detail using a wet suit as an example, with reference to FIGS. 2 to 5 of the accompanying drawings.

FIG. 2 shows the manufacturing process of the bellows-shaped main body material X.

In the figure, G indicates the unvulcanized raw material rubber that has been kneaded and is obtained through the following operations.

First, shearing force and heating are applied to the main rubber of the chloroprene-based synthetic rubber to masticate it. As a result, the hard elastic main material rubber is gradually depolymerized and softened, changing to a uniform plasticized state. Next, various chemicals such as vulcanizing agents, vulcanization accelerators, auxiliary agents, and blowing agents are added to the masticated rubber in appropriate amounts depending on the density of the desired sponge rubber, and are evenly mixed and dispersed. Perform kneading work. Thereafter, it was divided into a predetermined thickness, formed into a sheet, dusted with powder to prevent the surface from becoming sticky, and cooled.

As described above, unvulcanized raw material rubber G is obtained, and the raw material rubber G is converted into planar raw rubber pieces of desired dimensions.
Cut into g ₁ , g ₂ , g ₃ ... (process).

The dimensions and shapes of the flat raw rubber pieces g ₁ , g ₂ , g ₃ .
It can be selected as appropriate depending on the location where it is placed.

Therefore, for example, when sewing a wetsuit with a bellows-shaped main body material The dimensions of the raw rubber pieces g ₁ , g ₂ , g _{3 , .} . . should be determined so that the bellows-shaped main body material X has an ideal size to fit each part such as the shoulders.

Also, for example, without being limited to joint parts or three-dimensional parts as mentioned above, it is possible to
When sewing a wetsuit consisting of all over the body, the bellows-shaped main body material De, side gusset etc.
The raw rubber G is cut in advance according to the reduced dimensions of the right and left front peaks, back peaks, edges, soles, side gussets, etc., so that the approximate actual size of each constituent part is obtained, and the raw rubber G is cut according to the shapes of the respective constituent parts. It is also possible to obtain planar raw rubber pieces.

Next, each of the raw rubber pieces g ₁ , g ₂ , g ₃ , etc. cut above are cut.
... are sequentially primary vulcanized to form sponge rubber pieces s ₁ , s ₂ , s ₃
(the process of) obtaining... The kneaded foaming agent is decomposed by heating and a large amount of gas is generated. that time,
Foaming (expansion) is carried out during the primary vulcanization so that the vulcanization progresses to an optimal degree during the subsequent secondary vulcanization mold pressure, and as a result, a sponge rubber of the desired density (bellow-shaped main body) is obtained. Planar sponge rubber pieces s ₁ , s ₂ , s _{3 .} . . are obtained which are uniformly foamed to, for example, a foaming rate of about 30 to 50% without being completely foamed.

Next, the planar sponge rubber pieces in the above-mentioned primary vulcanization state but not yet completed foaming are sequentially placed in a mold such as a hot disc press with a jagged press surface to form a secondary vulcanization mold. While pressing to complete foaming, the main body fabric X of the wetsuit is formed into a bellows shape on both sides.

For example, heating a hot platen press P consisting of an upper die A and a lower die B, each of which has a jagged press surface,
The above-mentioned flat sponge rubber piece _s1 is placed in a predetermined position on the hot platen press P, and heated at a predetermined pressure, time, and temperature, and at the time of optimum vulcanization, the desired size,
The foam is gradually expanded to complete the foaming process so that the main body material X having the shape and thickness is obtained. Thereafter, it is cooled to stably maintain its bellows-like shape.

Through the above steps, a bellows-shaped main body X is obtained.

Next, sewing of a wetsuit using the bellows-shaped main body material X will be explained with reference to FIGS. 3 to 5.

FIG. 3 shows a wetsuit 1 in which a bellows-shaped main body material _X1 is arranged at a portion of the body corresponding to the shoulders. In the figure, Y ₂ and Y ₃ indicate the flat body area,
It is made of the same chloroprene sponge rubber as the bellows-shaped main body.

In the above-mentioned wetsuit 1, the cut surface 5 of the flat main body material Y ₁ for a swimsuit is cut separately in advance from the end surfaces 2, 3, 4 of the bellows-shaped main body material X _{1 ,
6} , and the cutting surface 7 of the planar main body area Y ₂ for the best viewing period,
The end surfaces 2 and 5, the end surfaces 3 and 6, and the end surfaces 4 and 7 are butted together and bonded using an adhesive. Next, make a bellows-shaped body part across the above butted area.
Sew X ₁ and the flat body fabric Y ₁ and Y ₂ with thread 8. At this time, the thread 8 is not passed from the front side to the back side of each main body fabric, but only through the front side of each main body fabric, so that water does not seep from the place where the thread is threaded.

Jabara-shaped main body obtained as above x ₁
The parts of _the flat body fabrics Y ₁ and Y ₂ that have not yet been sewn are to be sewn together according to the usual method. The whole thing is sewn so that it hits the . There is a rose-shaped main body in the area corresponding to the elbow or knee in Figures 4 and 5.
Wetsuits 9 and 10 in which X ₂ and X ₃ are arranged are shown.

In this case, as in wetsuit 1, the end faces of the bellows-shaped body fabrics X ₂ and X ₃ and the cut surfaces of the planar body fabrics Y ₃ and Y ₄ are butted against each other and glued together to prevent water from entering. Sew the entire body so that the jagged body fabric X ₂ and X ₃ touch the elbows and knees. In addition, in order to accommodate the bending and stretching of the elbow and knee joints as much as possible, the sewing is done so that the direction of expansion and contraction of the bellows coincides with the direction of bending and stretching of the joints.

The above-mentioned wetsuits 1, 9, and 10 are shown as examples in which they are placed on the shoulders, elbows, and knees, respectively, but they may also be placed on other parts of the body that correspond to three-dimensional parts of the body, or they may be placed on multiple locations. It is also possible to arrange them in combination.

Furthermore, when arranging the body material in the shape of a bellows all over the body, the body material in the shape of a bellows, obtained by pre-forming, the body, the edge, the sleeve, the side gusset, etc., are sewn according to the usual pattern. All you have to do is make a wetsuit.

For the main body of the wetsuit, nylon jersey, rayon jersey, vinylon jersey, etc. is temporarily pasted on the front and back sides of a piece of sponge rubber in a primarily vulcanized state, and heated to about 180℃ for 30 minutes. When sewing a wetsuit using a wetsuit that is heat-bonded by performing secondary vulcanization pressure for about 50 minutes and forming a bellows shape on both sides, the sewing method is the same as the above example. It is.

As mentioned above, conventionally, when a sponge that has been foamed through secondary vulcanization is further molded through pressure vulcanization, the size of the bubbles becomes disordered and the distribution becomes uneven, and due to excessive vulcanization, In the present invention, foaming is completed at the time of secondary vulcanization, and at the same time the foaming is completed during secondary vulcanization, and molding into a bellows shape is not possible, so the bubbles are not disturbed and the mold can be easily molded. This makes it possible to obtain a sponge rubber main body with an excellent closed cell structure that expands normally.

Furthermore, by shortening the manufacturing process, manufacturing costs can be reduced.

Furthermore, the jagged main body material has superior elasticity compared to flat fabric, and because of its unevenness, wetsuits using this material have practical advantages, such as having a protective function against external impacts. In addition, when it comes to wetsuits and other underwater/water suits that are sewn with a jagged main body material, it is more suitable for subtle movements such as the expansion and contraction of the body's muscles and the expansion and contraction of the skin. It has improved elasticity and improved mobility.

[Brief explanation of drawings]

Figure 1 of the accompanying drawings shows a conventional manufacturing process for a bellows-shaped main body fabric, then Figures 2 to 5 show an embodiment of the present invention, and Figure 2 shows a manufacturing process for a bellows-shaped main body fabric. , FIG. 3, FIG. 4, and FIG. 5 are examples of wetsuits in which bellows-shaped body fabrics are arranged at the shoulders, elbows, and knees, respectively.

Claims (1)

[Scope of Claims] 1. A step of cutting raw material rubber such as unvulcanized chloroprene-based synthetic rubber into a plurality of raw rubber pieces, and a step of primary vulcanization of the cut raw material rubber pieces to obtain sponge rubber pieces. , from the process of forming the main body of the suit, in which the sponge rubber piece in the above-mentioned primary vulcanization state but not yet completed foaming is further completed foaming by secondary vulcanization mold pressure, and both sides are formed into a bellows shape. A method for manufacturing a suit for underwater or on the water, characterized in that the suit is sewn using the above-mentioned jagged body material. 2. A jersey fabric is temporarily pasted on the front and back sides of the sponge rubber piece in the above-mentioned primary vulcanization state, and the body fabric of the suit is formed by forming a jagged shape on both sides using secondary vulcanization mold pressure. A method for manufacturing a suit for underwater/on-water use according to claim 1.