WO2014172809A1

WO2014172809A1 - Internal bladder for sewed type sport ball and manufacturing method therefor

Info

Publication number: WO2014172809A1
Application number: PCT/CN2013/000742
Authority: WO
Inventors: 许乃红
Original assignee: Xu Naihong
Priority date: 2013-04-24
Filing date: 2013-06-24
Publication date: 2014-10-30
Also published as: CN103212190A

Abstract

Disclosed is a sewed type sport ball. The sewed type sport ball is characterized in that the sewed type sport ball uses a polyvinyl chloride internal bladder. The internal bladder is made of the following materials in percentage contents: a polyvinyl chloride paste resin (50%), a plasticizer (45 to 47%), and a barium zinc stabilizer (3 to 5%). The method for manufacturing the internal bladder is characterized in that the method comprises the following steps in sequence: step 1: mixing raw materials according to a formula, and evenly stirring the raw materials in a high-speed stirring bucket; step 2: injecting defoamed mixed materials into a ball-shaped mold by using a charging machine, and then, performing heating, rolling and solidification forming for 3 to 10 minutes in a rotary furnace with a temperature of 200 to 300 degrees centigrade; and step 3: taking the ball-shaped mold out of the furnace, cooling the mold in warm water to a temperature lower than 100 degrees centigrade, taking the internal bladder out of the mold, pressing a valve core into the internal bladder within one minute, inflate air into the internal bladder and molding the internal bladder in a standard bladder mold, and then, naturally cooling the internal bladder to a normal temperature. The internal bladder of the present invention has advantages of being good in air impermeability and bounce capability, low in power consumption of production, low in cost and low in recycling cost, and does cause secondary pollution to the environment.

Description

Lining type sports ball inner liner and manufacturing method thereof

The present invention relates to a sewing type sports ball, and more particularly to a liner for a sewing type sports ball, and to a method of manufacturing a liner.

Background technique

At present, the inner bladder of various sewing sports balls is mainly used for storing air and holding pressure, thereby improving the bounce performance of the ball. So far, the inner liner of various sewing sports balls in the world is usually made of 4 (^-50% natural rubber, about 10% synthetic rubber, 30-40% carbon powder, calcium carbonate powder and accelerator). Therefore, the ball liner mainly made of rubber material, due to the natural characteristics of the rubber material, must be added with a large amount of carbon powder and calcium carbonate powder to be rolled, resulting in poor airtightness and elasticity, and In the production, several rubber mixers are needed for three- to four-stage rolling and filtration. Finally, high-temperature vulcanization molding is used. The total power of the production equipment in the whole production process can reach 400KW, and the boiler steam is also needed, so it takes cost. A large amount of electric heating energy, in addition, in the primary rolling, it will also generate a large amount of dust, which will cause environmental pollution, and also cause damage to the operator's respiratory system;

In addition, when the ball liner made of rubber material is recycled, it takes a lot of manpower and energy to carry out pulverization and desulfurization, and then it is pulverized into reclaimed rubber. The recovery cost is much higher than the product cost, so it is usually not recycled. This will cause secondary pollution of the environment.

In summary, the inner bladder of the existing sports ball mainly has the following problems:

(1) Poor air tightness and elasticity;

(2) At the time of production, the energy consumption is relatively low, and a large amount of dust is generated, which will cause environmental pollution and damage to the respiratory system of the operator;

(3) The high cost of recycling will cause secondary pollution of the environment.

Summary of the invention

The technical problem to be solved by the present invention is to provide a liner for a sports ball of a sewing type which is excellent in airtightness and elasticity.

In order to solve the above technical problems, the technical solution adopted by the present invention is a liner for sewing a sports ball, and the inner liner is a polyvinyl chloride inner liner. The liner is prepared using the following percentages of raw materials: polyvinyl chloride paste resin: 50%, plasticizer 45-47%, zinc antimony stabilizer 3- 5 ° / ₀ .

The polyvinyl chloride paste resin: 50%, 45% plasticizer, 5% zinc antimony stabilizer.

The polyvinyl chloride paste resin: 50%, plasticizer 47%, strontium zinc stabilizer 3%.

In addition, the present invention also provides a method for preparing a liner, which comprises the following steps in sequence: Step 1: Mixing the raw materials according to the formula, and stirring uniformly in a high-speed stirring tank;

Step 2: completely remove the air bubbles inside the mixture by using a vacuum defoaming machine;

Step 3: The defoamed mixture is injected into the spherical mold through a feeding machine, and then subjected to heating and rolling solidification molding in a rotary furnace at a temperature of 200-30 CTC for 3-10 minutes;

Step 4: After the spherical mold is released from the furnace, it is cooled to 100 Ό or less in the warm water, and then the liner is pressed out, and the valve core is pressed in 1 minute, and then inflated to a normal temperature after being inflated and shaped in a standard bladder mold.

The step 2 further includes a color matching step.

In the third step, the temperature was 250 ° C and the time was 6 minutes.

Compared with the prior art, the beneficial effects of the present invention are:

1. Since the inner liner of the present invention is mainly made of a polyvinyl chloride material, the airtightness and elasticity are higher than that of the inner liner of the rubber material, and therefore the airtightness and elasticity of the present invention are good.

2. Since the inner liner of the invention mainly adopts a polyvinyl chloride material, the recycling value of the inner liner is improved, and the processing cost of the recovery is also low, so the recycling cost of the invention is low, and the environment is not caused twice. Pollution.

3. Since the inner liner of the invention mainly adopts a polyvinyl chloride material, thereby eliminating a large amount of rubber consumption and simplifying the manufacturing process of the inner liner, thereby effectively reducing energy consumption, the invention has simple manufacturing process and energy consumption. Lower.

4. Since the inner liner of the present invention mainly uses a polyvinyl chloride material, so that a large amount of dust is not generated in the production process, environmental pollution can be reduced and damage to personnel can be reduced, so that the present invention is more environmentally friendly.

DETAILED DESCRIPTION OF THE INVENTION The present invention will be further described in detail below in conjunction with specific embodiments.

A liner for sewing a sports ball, the inner tank being a polyvinyl chloride liner.

The above liner is made of the following percentages of raw materials:

Polyvinyl chloride paste resin: 50%, plasticizer 45-47%, antimony zinc stabilizer 3-5%. Example 1: The inner liner of the present invention comprises a polyvinyl chloride paste resin: 50%, a plasticizer 45%, and a bismuth zinc stabilizer 5%.

Example 2: The liner of the present invention comprises a polyvinyl chloride paste resin: 50 ° /. , plasticizer 47%, antimony zinc stabilizer 3%.

In reality: since the present invention mainly uses a polyvinyl chloride material, the use of the rubber material is eliminated, thereby effectively improving the airtightness and elasticity of the inner liner.

In addition, the present invention also provides a method for manufacturing a liner, which in turn comprises the following steps:

Step 1: Mix the raw materials according to the formula and stir evenly in a high-speed mixing tank;

Step 3: The defoamed mixture is injected into the spherical mold through a feeder, and then at a temperature of

Heating and rolling solidification molding in a rotary furnace of 200-300 ° C for 3-10 minutes;

Embodiment 3: A method for manufacturing a liner, comprising the following steps in sequence:

Step 2: The bubble inside the mixture is completely removed by a vacuum defoaming machine, and then the color is matched; Step 3: The defoamed mixture is injected into the spherical mold through the feeder, and then carried out in a rotary furnace at a temperature of 250 ° C for 6 minutes. Heating roll curing molding;

The equipment used in this process is as follows: 1 batching mixer, power: 15KW; 1 color matching table, power: 5KW; 1 rotomolding rotary furnace, power: 7KW; 1 air compressor, power: 37KW; Other auxiliary equipment, power is 6KW. In addition, the heating fuel in this process: diesel 240KG or anthracite

300KG, which is much lower than the fuel consumption of the boiler. Compared with the production of the rubber liner, it reduces the energy consumption of the equipment by more than 80%. After long-term use, the liner can also be used for plastic recycling to make other products, and the recycling cost is low. The high utilization rate makes it easy to avoid secondary pollution to the environment.

In the actual use process, various attachments can be added outside the bladder to accommodate different types of coated skins.

The above description is only a preferred embodiment of the present invention, and the scope of protection of the present invention is not in the above embodiment. The equivalent modifications and variations of the present invention are intended to be included within the scope of the appended claims.

Claims

Rights request

A sewing type sports ball, characterized in that: a polyvinyl chloride inner liner is used.

2. The inner casing of the sewing-type sports ball according to claim 1, wherein: the inner liner is made of the following percentages of raw materials:

Polyvinyl chloride paste resin: 50%, plasticizer 45-47%, antimony zinc stabilizer 3-5%.

The bladder for a sports ball according to claim 1, wherein the polyvinyl chloride paste resin is 50%, the plasticizer is 45%, and the bismuth zinc stabilizer is 5%.

The bladder for a sports ball according to claim 1, wherein the polyvinyl chloride paste resin: 50%, plasticizer 47%, and strontium zinc stabilizer 3%.

A method of producing a liner according to any one of claims 1 to 3, characterized in that it comprises the following steps in sequence:

Step 2: The defoamed mixture is injected into the spherical mold through a feeder, and then at a temperature of

3 to 10 minutes of heating and rolling solidification in a 200-300 ° C rotary kiln;

Step 3: After the spherical mold is released, it is cooled to 100 ° C or less in warm water, and then the inner liner is pressed out, and the valve core is pressed into the valve core in 1 minute, and then naturally cooled to normal temperature after being inflated and shaped in a standard bladder mold.

6. The step 2 also includes a color matching step.

The method according to claim 4, wherein: in the third step, the temperature is 25 (TC, and the time is 6 minutes.