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Reinforced type composite drum leather and manufacturing method thereof

A manufacturing method and technology of composite drums, applied to percussion instruments, instruments, musical instruments, etc., can solve the problems of environmental protection, price rise, animal skin shortage, etc., and achieve the effect of loud and clear pronunciation, smooth shrinkage, and crisp timbre

Inactive Publication Date: 2013-03-13
周廷华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of big drum used to be made of sheepskin or cowhide. At present, the supply of these animal skins is becoming increasingly scarce, the price is rising, and it is not environmentally friendly. With the change of people's living habits, mutton does not necessarily have to be skinned.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A reinforced composite drum skin, the components of which are calculated by weight percentage of the total amount are: polyvinyl alcohol 80, water 90, toner 2; Nylon woven mesh becomes a reinforced composite drumhead with a three-layer structure. The nylon is preferably nylon or capron or nylon-6. The mesh of nylon woven mesh is between 25-60 mesh.

[0017] The process steps for manufacturing the reinforced composite drum skin are: pour the above-mentioned ratio of polyvinyl alcohol and water into the container, mix and stir evenly, and stew in water for 1.5-2 hours (calculated from the time when the water in the pot boils at 100°C). Completely dissolve into a solution. During this period, it is necessary to stir the contents of the container 3-6 times separately. After that, take the solution out of the pot, cool it naturally to 40-50°C, and add toner 2 (according to the weight percentage of the total solution) ) and stirred evenly, cooled naturally to 20-40°C to obt...

Embodiment 2

[0019] For the reinforced composite drum skin of this example, the components of its solution are calculated in percentage by weight of the total amount: polyvinyl alcohol 10, water 87.5, toner 2.5; The outside of the stainless steel vertical cylinder with a diameter of φ0.2-0.3m is set and tensioned, immersed vertically in the artificial drum skin solution slurry, lifted and hung, dried and formed, and then dipped for a second time after it is completely dry for about 1.5-2 hours. Repeat the operation 4-8 times according to this method, and after drying, a reinforced composite drumhead with a thickness of 0.2-0.3mm and a three-layer structure can be obtained.

Embodiment 3

[0021] For the reinforced composite drum skin of this example, the components of its solution are calculated by weight percentage of the total amount: polyvinyl alcohol 12, water 85, colorant 3; The outside of the drum is tensioned, horizontally immersed in the artificial drum skin solution slurry, and the drum is rotated. After that, it is lifted and hung, dried and formed. After 2-4 cycles, another piece of wool or cotton or hemp or nylon warp and weft net Cloth is covered on the artificial drumhead outside the horizontal drum and tensioned, and the remaining 2-4 cycle operations are continued to become a five-layer composite drumhead with a thickness of 0.3-0.4mm.

[0022] Equally, outside the vertical cylinder in Example 2, the middle section of the cycle operation can be combined with one more layer of mesh cloth to become a reinforced composite drum skin with five layers of structure.

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Abstract

The invention relates to reinforced type composite drum leather and a manufacturing method thereof. Three or more layers of the reinforced type composite drum leather are formed by adding one or more layers of woven mesh clothes with resilience forces to the middle of man-made drum leather which uses polyvinyl alcohol as raw materials. The manufacturing method of the reinforced type composite drum leather is that the polyvinyl alcohol is proportionally prepared into man-made drum leather solution slurries, then the mesh clothes are paved on a template for grouting molding or the mesh clothes are sleeved in a sleeve for vertical slurry dipping molding or the mesh clothes are sleeved in a horizontal roller for slurry dipping molding to prepare the reinforced type composite drum leather. The reinforced type composite drum leather is high in tensile forces, good in weather resistance and wide in used areas; simultaneously, the reinforced type composite drum leather doesn't absorb noises, has clear and melodious tone color, is similar to sheepskin and capable of replacing animal skins of the sheepskins and cow skin to be manufactured into a large drum with the diameter of over dozens of centimeters and has the advantages of being environment-friendly, healthful, cheap and attractive.

Description

technical field [0001] The invention relates to the technical field of polyvinyl alcohol molding materials, in particular to a reinforced composite drum skin and a manufacturing method thereof. Background technique [0002] The existing artificial drum skins using polyvinyl alcohol as the main raw material have been widely welcomed by customers in the production of children's toys, such as tambourines and hand drums. Tensioned after drying, flat and wrinkle-free, easy to make, labor-saving and time-saving, etc. Dragon boat drums, etc., appear to be insufficient in strength. In high latitudes, encountering low temperature and dry seasons, sometimes water loss and cracking will occur. This kind of big drum used to be made of sheepskin or cowhide. At present, the supply of these animal skins is becoming increasingly scarce, the price keeps rising, and it is not environmentally friendly. With the change of people's living habits, mutton does not necessarily have to be skinned....

Claims

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Application Information

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IPC IPC(8): G10D13/02C08L29/04
Inventor 周廷华
Owner 周廷华
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