Production process of seamless rubber dam bag

Abstract

The invention discloses a production process of a seamless rubber dam bag, relates to the production process of the high-strength seamless rubber dam bag and provides the production process of the seamless rubber dam bag which have the advantages of high structural strength, overall flatness, convenience in anchorage and capability of avoiding the emergence of resonance effect during the use. A long blank comprising outer-layer glue, intermediate-layer glue, inner-layer glue and a framework layer is adopted, and the processing comprises the following steps of (1) preparing joints (2) performing primary vulcanization; (3) cutting; (4) lapping, and (5) performing secondary vulcanization. According to the production process disclosed by the invention, the vulcanization is performed twice, the vulcanization is firstly performed on the middle part of the long blank and raw edges are left on the two sides; then the cutting is performed, and short blanks are obtained after cutting; the two side edges of the short blanks are of the raw edges, the joints in the complementary shapes are also arranged on the two side edges, the joints of the two short blanks are butted, the secondary vulcanization is performed, and the adjacent raw edges of the adjacent two short blanks are vulcanized to vulcanized edges, namely the material is consistent with that of the middle part after vulcanization; and a bag body of the rubber dam bag with a radial seam is finally prepared.

Description

Technical field [0001] The invention relates to a production process of a high-strength seamless rubber dam bag. Background technique [0002] Rubber dam, also known as rubber dam, is made of high-strength synthetic fiber fabric as the force frame, and the inside and outside are coated with rubber as a protective layer, processed into tape, and then anchored on the bottom plate to form a closed dam bag. A bag-type dam formed by inflating the road with water (gas). The top of the dam can overflow, and the height of the dam can be adjusted according to needs, and the upstream water level can be controlled to give full play to the benefits of irrigation, power generation, shipping, flood control, and tide resistance. [0003] The current production process of rubber dam bags is that the dam cloth is vulcanized as a whole and then overlapped. And lap joints are generally parallel to the direction of water flow; according to the above process, the thickness of the joints will inevitab...

AI Technical Summary

Problems solved by technology

[0005] l. There are many lap seams in the rubber dam bag, and the production process is more complicated:

[0006] 2. Cutting off the cloth width many times, and then seaming radially will waste materials and increase costs;

[0007] 3. On the anchoring line of the rubber dam bag, the thickness of the rubber dam bag at the anchoring line position caused by the radial seam is uneven, which may easily cause leakage at the anchoring line;

[0008] 4. The surface of the produced rubber dam bag is uneven

[0009] But this kind of dam bag has the following three main problems, one is: the seam is perpendicular to the direction of water flow, and under the condition of bearing the internal pressure of the bag body, it also has to bear the impact of water flow; even if the seam itself has such a bearing capacity , but the bags on both sides of the lap seam are also difficult to withstand such a complex stress environment

The second is: in the case of a wide river channel, when the water is released or overflows, the water flow will vibrate the dam bag, and the linearity of the latitudinal seam has a resonance frequency. Once the two frequencies are the same or close, it will cause the rubber dam to The "resonance effect" of the bag as a whole shortens the service life of the dam bag

The third is: the integrity of the dam bag is not good, which affects the overall appearance

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