WO2011075962A1 - Pvc gravity ball and preparation method thereof - Google Patents

Abstract

A PVC gravity ball and preparation method thereof are provided, which belong to fitness equipment technical field. The PVC gravity ball includes a hollow ball shell comprising a weighting layer, wherein the weighting layer is formed by PVC mixed liquor and a weighting agent. The preparation method of the PVC gravity ball comprises the following steps: putting the materials of weighting layer into a mould, then putting the mould into hearth which can rotate at 360 degrees, heating at a rotation mode with a rotate speed of 1-30 rpm, a heating temperature of 100-400^oC and a heating time of 2min-40min, cooling and demolding. The gravity ball has stable barycenter and good elasticity.

Description

 PVC gravity ball and preparation method thereof

 Technical field

 The invention relates to a PVC gravity ball and a preparation method thereof, and belongs to the technical field of the fitness equipment industry. Background technique

 The existing PVC gravity ball is formed by adding a filler such as yellow sand and iron sand to the sphere after the PVC sphere is formed, so as to enhance the weight of the whole sphere and achieve the purpose of training and exercise. Its main disadvantages are:

1. After the filler is added to the sphere, it is impossible to completely fill it. There is still some air inside, or there is a gap. This will cause the center of gravity of the sphere to change as the filler flows during exercise.

 2. After the filler is added to the sphere, the originally elastic sphere will change the elasticity of the entire sphere after the filler is added to the sphere. Summary of the invention

 SUMMARY OF THE INVENTION The object of the present invention is to overcome the above two problems and to provide a PVC gravity ball and a preparation method thereof. In order to achieve the above object, the technical solution of the present invention is to provide a PVC gravity ball, comprising a hollow spherical shell, wherein the hollow spherical shell comprises a weighting layer, and the weighting layer material is composed of a PVC mixture and a weighting agent. .

 The weighting layer raw material is composed of 5-95 wt% of a PVC mixture and 5-95 wt% of a weighting agent.

 The PVC mixture comprises 20-70 wt% of PVC, 20-70 wt% of plasticizer, and 2-10 wt% of stabilizer. 5-10wt The foaming agent further comprises a foaming agent 0. 5-10wt

 The weighting agent is iron sand, iron powder, steel sand, river sand, stone sand or yellow sand having a particle size of 50 mesh -1000 mesh.

 The hollow spherical shell further includes an outer layer of PVC, and the outer layer of the PVC is disposed outside the weighting layer and connected to the weighting layer.

 The PVC outer layer material comprises 20-70 wt% of PVC, 20-70 wt% of plasticizer, and 2-10 wt% of stabilizer. 5-10wt。 The outer layer of the PVC further comprises a foaming agent 0. 5-10wt

 The PVC is a paste-like polyvinyl chloride powder resin.

The plasticizer is dioctyl phthalate, dioctyl adipate, dioctyl terephthalate, epoxy Fatty acid butyl ester, trioctyl trimellitate, chlorinated paraffin, phenyl petroleum sulfonate or dipentaerythritol ester. The stabilizers are calcium stearate, zinc stearate, barium zinc stearate, calcium zinc stearate, tribasic lead sulfate or tin dibutyl maleate.

 The blowing agent is azodicarboxylate, N, N'-dinitrosopentamethylenetetramine, p-toluenesulfonylhydrazide, sodium hydrogencarbonate or n-pentamidine.

 The hollow spherical shell is spherical or ellipsoidal.

 The hollow spherical shell has a handle on one side or opposite sides.

 The invention also provides a preparation method of a PVC gravity ball, characterized in that: the specific steps are: putting the weighting layer raw material into the mold, and then putting the mold into the 360 degree rotating furnace, rotating at a rotation speed of l-30 rpm Heating, heating temperature is 100-400 ° C, heating time 2min-40min, cooling release.

 The invention also provides a preparation method of another PVC gravity ball, characterized in that the specific steps are as follows: placing the PVC outer layer raw material into the mold, and then placing the mold into the 360 degree rotating furnace, at a rotation speed of l-30 rpm Rotating heating, heating temperature is 100-400 ° C, heating time 2min-20min, when the PVC outer layer material changes from liquid to solid or in semi-liquid semi-solid state, add the weighting layer raw material, then 100-400 ° C is heated for 2 min - 40 min, the weighting layer is connected to the outer layer of PVC, and the mold is cooled and cooled.

 The advantages of the invention are:

 1. Because the filler is mixed with the raw materials used in the PVC ball, during the molding process, the filler and the PVC are evenly bonded together in the ball wall, and the filler can no longer flow with the movement of the ball. This solves the problem that the center of gravity of the sphere is unstable.

 2. Because the filler and the PVC are integrated into one, the filler is a spherical wall that forms a sphere with the PVC, and the sphere is a hollow, thereby solving the problem of poor elasticity of the sphere. DRAWINGS

 Figure 1 is a cross-sectional view of the first PVC gravity ball;

 Figure 2 is a cross-sectional view of a second PVC gravity ball;

 Figure 3 is a cross-sectional view of a third type of PVC gravity ball;

 Figure 4 is a cross-sectional view of a fourth PVC gravity ball;

 Figure 5 is a cross-sectional view of a fifth PVC gravity ball;

Figure 6 is a cross-sectional view of a sixth PVC gravity ball; Figure 7 is a cross-sectional view of a seventh PVC gravity ball;

 Figure 8 is a cross-sectional view of an eighth PVC gravity ball;

 The invention will be specifically described below in conjunction with the examples.

Example 1

 As shown in FIG. 1 , which is a cross-sectional view of a first type of PVC gravity ball, the PVC gravity ball includes a spherical hollow spherical shell 3 without a handle 4 , and the hollow spherical shell 3 includes a weighting layer 2 , a weighting layer 2 It is made up of 5 wt% of a PVC mixture and 95 wt% of a weighting agent composed of 20 wt% of PVC, 70 wt% of a plasticizer, and 10 wt% of a stabilizer.

 The PVC is a paste-like polyvinyl chloride powder resin, P440, produced by Shanghai Chlor-Alkali Chemical Co., Ltd. The plasticizer is dioctyl phthalate.

 The stabilizer is calcium stearate.

 The weighting agent is iron sand having a particle size of 100 mesh.

 During the production, the weighted layer 2 raw material is placed in the mold, and the mold is placed in a 360-degree rotating furnace, heated at a rotation speed of 1 rpm, and the heating temperature is 100 ° C, the heating time is 40 minutes, and the mold is cooled and cooled.

 When using, hold the ball and lift the PVC gravity ball up to achieve the effect of exercising.

Example 2

 As shown in FIG. 2, which is a cross-sectional view of a second PVC gravity ball, the PVC gravity ball includes an ellipsoidal hollow spherical shell 3 without a handle 4, and the hollow spherical shell 3 includes a weighting layer 2, a weighting layer. 2 Made of 95 wt% of a PVC mixture and 5 wt% of a weighting agent, the PVC mixture consisting of 70 wt% of PVC, 20 wt% of plasticizer, and 10 wt% of stabilizer.

 The PVC is a paste-like polyvinyl chloride powder resin, P1069, produced by Shanghai Chlor-Alkali Chemical Co., Ltd. The plasticizer is dioctyl adipate.

 The stabilizer is zinc stearate.

 The weighting agent is iron powder having a particle size of 300 mesh.

 At the time of production, the weighted layer 2 raw material was placed in a mold, and the mold was placed in a 360-degree rotating furnace and heated at a rotation speed of 30 rpm. The heating temperature was 400 ° C, the heating time was 2 min, and the mold was cooled.

When using, hold the ball and lift the PVC gravity ball up to achieve the effect of exercising. Example 3

 As shown in FIG. 3 , which is a cross-sectional view of a third PVC gravity ball, the PVC gravity ball includes a hollow spherical shell 3 having a handle 4 on the hollow spherical shell 3 , and the handle 4 and the hollow spherical shell 3 are integrally formed. 5wtwt, plasticizer 47. 5wt 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5重量%组成。 Composition, 2wt% stabilizer and foaming agent 0. 5wt% composition.

 The PVC is a paste-like polyvinyl chloride powder resin, R1302, produced by Anhui Chlor-Alkali Chemical Co., Ltd. The plasticizer is dioctyl terephthalate.

 The stabilizer is zinc strontium stearate.

 The blowing agent is hydrazine, Ν'-dinitrosopentamethylenetetramine.

 The weighting agent is a steel grit having a particle size of 400 mesh.

 At the time of production, the weighted layer 2 raw material was placed in a mold, and the mold was placed in a 360-degree rotating furnace, and heated at a rotation speed of 10 rpm. The heating temperature was 300 ° C, the heating time was 25 minutes, and the mold was cooled.

 When using, hold the handle 4 and lift the PVC gravity ball up to achieve the effect of exercising.

Example 4

 As shown in FIG. 4, which is a cross-sectional view of a fourth PVC gravity ball, the PVC gravity ball includes a hollow spherical shell 3 having opposite handles 4, a handle 4 and a hollow spherical shell 3 The body is integrally formed into a spherical shape. The hollow spherical shell 3 comprises a weighting layer 2 made of 60% by weight of a PVC mixture and 40% by weight of a weighting agent. The PVC mixture is made up of 60% by weight of PVC and 25wt by plasticizer. %, stabilizer 5 wt% and foaming agent 10 wt% composition.

 The PVC is a paste-like polyvinyl chloride powder resin, R1702, produced by Anhui Chlor-Alkali Chemical Co., Ltd. The plasticizer is butyl fatty acid butyl ester.

 The stabilizer is calcium zinc stearate.

 The blowing agent is p-toluenesulfonylhydrazide.

 The weighting agent is river sand having a particle size of 50 mesh.

 At the time of production, the weighted layer 2 raw material was placed in a mold, and the mold was placed in a 360-degree rotating furnace and heated at a rotation speed of 30 rpm. The heating temperature was 350 ° C, the heating time was 20 minutes, and the mold was cooled.

 When using, hold the handle 4 and lift the PVC gravity ball up to achieve the effect of exercising.

Example 5 As shown in FIG. 5, which is a cross-sectional view of a fifth PVC gravity ball, the PVC gravity ball includes a spherical hollow spherical shell 3 without a handle 4, and the hollow spherical shell 3 includes a weighting layer 2 and a PVC outer portion. Layer 1, the outer layer 1 of PVC is disposed outside the weighting layer 2 and connected to the weighting layer 2. The weighting layer 2 is made of 60% by weight of a PVC mixture and 40% by weight of a weighting agent, and the PVC mixture is composed of 60% by weight of PVC, 30% by weight of a plasticizer, 5% by weight of a stabilizer, and 5% by weight of a foaming agent. The PVC outer layer 1 raw material is composed of 20% by weight of PVC, 70% by weight of plasticizer, and 10% by weight of stabilizer.

 The PVC is a paste-like polyvinyl chloride powder resin, P440, produced by Shanghai Chlor-Alkali Chemical Co., Ltd. The plasticizer is trioctyl trimellitate.

 The stabilizer is tribasic lead sulfate.

 The weighting agent is stone sand having a particle size of 1000 mesh.

 When making, make a small hole in the mold and block it with a cylindrical metal rod such as iron rod or aluminum rod. The first time, the outer layer of raw material was placed in a mold, and then placed in a furnace rotating at 30 rpm, and heated at 400 ° C for 2 minutes to allow the surface of the mold to be first coated with a layer of material. This layer of material can be uncooked or fully cooked, and then the mold is taken out of the heated furnace, the blocked round bar is opened, and the weighted layer material is poured into the mold from the opened hole. Heat at 400 ° C for 2 min to fully mature the inner and outer layers. The shaped sphere is then removed from the mold because there is a round metal rod on the mold and a hole is formed in the sphere. Then plug it with a plug with a smaller aperture. Because the composition of the weighting layer material and the outer layer material are similar, they are connected together during the heating process, and the weighting layer and the outer layer become a whole.

 When using, hold the ball and lift the PVC gravity ball up to achieve the effect of exercising.

Example 6

 As shown in FIG. 6, which is a cross-sectional view of a sixth PVC gravity ball, the PVC gravity ball includes an ellipsoidal hollow spherical shell 3 without a handle 4, and the hollow spherical shell 3 includes a weighting layer 2 and a PVC. The outer layer 1, the outer layer 1 of PVC is disposed outside the weighting layer 2 and connected to the weighting layer 2. The weighting layer 2 is made of 60% by weight of a PVC mixed liquid and 40% by weight of a weighting agent, and the PVC mixed liquid is composed of 60% by weight of PVC, 30% by weight of a plasticizer, 5% by weight of a stabilizer, and 5% by weight of a foaming agent. The outer layer of PVC 1 consists of 70% by weight of PVC, 20% by weight of plasticizer and 10% by weight of stabilizer.

 The PVC is a paste-like polyvinyl chloride powder resin, P440, produced by Shanghai Chlor-Alkali Chemical Co., Ltd. The plasticizer is chlorinated paraffin.

The stabilizer is dibutyltin maleate. The weighting agent is yellow sand having a particle size of 500 mesh.

 When making, make a small hole in the mold and block it with a cylindrical metal rod such as iron rod or aluminum rod. The first time, the outer layer material was placed in a mold, and then placed in a furnace rotating at 20 rpm, and heated at 100 ° C for 20 minutes to allow the surface of the mold to be first coated with a layer of material. This layer of material can be uncooked or fully cooked, and the mold is taken out of the heated furnace, the blocked round bar is opened, and the weighted layer material is poured into the mold from the opened hole. Heat at 100 ° C for 40 min to fully mature the inner and outer layers. The shaped sphere is then removed from the mold because there is a round metal rod on the mold and a hole is formed in the sphere. Then plug it with a plug with a smaller aperture. Because the composition of the weighting layer material and the outer layer material are similar, they are connected together during the heating process, and the weighting layer and the outer layer become a whole.

 When using, hold the ball and lift the PVC gravity ball up to achieve the effect of exercising.

Example 7

 As shown in FIG. 7 , which is a sectional view of a seventh PVC gravity ball, the PVC gravity ball includes a hollow spherical shell 3 with a handle 4 , and the handle 4 and the hollow spherical shell 3 are integrally formed into a spherical shape. The hollow spherical shell 3 comprises a weighting layer 2 and a PVC outer layer 1, which is disposed outside the weighting layer 2 and connected to the weighting layer 2. The weighting layer 2 is made of 60 wt% of a PVC mixture and 40 wt% of a weighting agent, and the PVC mixture is composed of 30 wt% of PVC, 60 wt% of a plasticizer, 5 wt% of a stabilizer, and 5 wt% of a foaming agent. The composition of the outer layer of the PVC is composed of 60% by weight of PVC, 30% by weight of plasticizer, 9.5 % by weight of stabilizer and 0.5% by weight of foaming agent.

 The PVC is a paste-like polyvinyl chloride powder resin, P440, produced by Shanghai Chlor-Alkali Chemical Co., Ltd. The plasticizer is phenyl petroleum sulfonate.

 The stabilizer is zinc stearate.

 The blowing agent is n-pentamidine.

 The weighting agent is iron sand having a particle size of 300 mesh.

When making, make a small hole in the mold and block it with a cylindrical metal rod such as iron rod or aluminum rod. The first time, the outer layer of raw material is placed in a mold, and then placed in a furnace rotating at a rotation speed of 10 rpm, and heated at 200 ° C for 20 minutes to allow the surface of the mold to be first coated with a layer of material. This layer of material can be uncooked or fully cooked, and then the mold is taken out from the heated furnace, the blocked round bar is opened, and the weighted layer material is poured into the mold from the opened hole. Heat at 200 ° C for 20 min to fully mature the inner and outer layers. The shaped sphere is then removed from the mold because there is a round metal rod on the mold and a hole is formed in the sphere. Then plug it with a plug with a smaller aperture. Because the composition of the weighting layer material and the outer layer material are similar, So they will be connected together during the heating process, and the weighting layer and the outer layer will become a whole.

 When using, hold the handle 4 and lift the PVC gravity ball up to achieve the effect of exercising.

Example 8

 As shown in FIG. 8, which is a cross-sectional view of an eighth PVC gravity ball, the PVC gravity ball includes a hollow spherical shell 3, and has two opposite handles 4, and the handle 4 and the hollow spherical shell are integrally formed into a spherical shape. The hollow spherical shell 3 comprises a weighting layer 2 and a PVC outer layer 1, and the PVC outer layer 1 is arranged outside the weighting layer 2 and connected to the weighting layer 2. The weighting layer 2 is made of 60 wt% of a PVC mixture and 50 wt% of a weighting agent, and the PVC mixture is composed of 50 wt% of PVC, 40 wt% of a plasticizer, 5 wt% of a stabilizer, and 5 wt% of a foaming agent. The outer layer of PVC 1 is composed of 60 wt% of PVC, 30 wt% of plasticizer, 5 wt% of stabilizer and 5 wt% of foaming agent.

 The PVC is a paste-like polyvinyl chloride powder resin, P440, produced by Shanghai Chlor-Alkali Chemical Co., Ltd. The plasticizer is dipentaerythritol ester.

 The stabilizer is zinc stearate.

 The blowing agent is n-pentamidine.

 The weighting agent is yellow sand having a particle size of 500 mesh.

 When making, make a small hole in the mold and block it with a cylindrical metal rod such as iron rod or aluminum rod. The first time, the outer layer of raw material was placed in a mold, and then placed in a furnace rotating at 5 rpm, and heated at 200 ° C for 15 minutes to allow the surface of the mold to be first coated with a layer of material. This layer of material can be uncooked or fully cooked, and then the mold is taken out of the heated furnace, the blocked round bar is opened, and the weighted layer material is poured into the mold from the opened hole. Heat at 200 ° C for 20 min to fully mature the inner and outer layers. The shaped sphere is then removed from the mold because there is a round metal rod on the mold and a hole is formed in the sphere. Then plug it with a plug with a smaller aperture. Because the components of the weighting layer and the outer layer are mostly similar, they are connected together during the heating process, and the weighting layer and the outer layer become a whole.

 When using, hold the handle 4 and lift the PVC gravity ball up to achieve the effect of exercising. The PVC gravity ball produced by the present invention has a hollow shape and the ball can be vented, so that it becomes elastic. When the PVC gravity ball is placed at a distance of 1.5 meters from the ground, let it freely land. After the ball is grounded, its resilience can reach 10-30CM. The PVC gravity ball added to the filler is filled with filler. When it is free to land at a distance of 1.5 meters from the ground, there is no elasticity.

Claims

Rights request:  A PVC gravity ball comprising a hollow spherical shell (3), characterized in that the hollow spherical shell (3) comprises a weighting layer (2), the weighting layer (2) is made of a PVC mixture and aggravated Composition.  The PVC gravity ball according to claim 1, wherein the weighting layer (2) material is composed of a mixture of 5-95% by weight of the PVC mixture and 5-95% by weight of the weighting agent.  The PVC gravity ball according to claim 2, wherein the PVC mixed liquid comprises 20-70 wt% of PVC, 20-70 wt% of plasticizer, and 2-10 wt% of stabilizer.  5-10wt%o The foaming agent further comprises a foaming agent 0. 5-10wt%o  The PVC gravity ball according to claim 1, wherein the weighting agent is iron sand, iron powder, steel sand, river sand, stone sand or yellow sand having a particle diameter of 50 mesh to 1000 mesh.  The PVC gravity ball according to claim 1, wherein the hollow spherical shell (3) further comprises a PVC outer layer (1), and the PVC outer layer (1) is disposed on the weighting layer (2) The outside is connected to the weighting layer (2).  The PVC gravity ball according to claim 6, wherein the outer layer (1) of the PVC comprises 20-30% by weight of PVC, 20_70% by weight of plasticizer, and 2-10% by weight of stabilizer.  5-10wt%o, the outer layer of the PVC (1) raw material further comprises a foaming agent 0. 5-10wt% o  The PVC gravity ball according to claim 3 or 7, wherein the PVC is a paste-like polyvinyl chloride powder resin.  The PVC gravity ball according to claim 3 or 7, wherein the plasticizer is dioctyl phthalate, dioctyl adipate, dioctyl terephthalate, epoxy. Fatty acid butyl ester, trioctyl trimellitate, chlorinated paraffin, phenyl petroleum sulfonate or dipentaerythritol ester.  The PVC gravity ball according to claim 3 or 7, wherein the stabilizer is calcium stearate, zinc stearate, barium zinc stearate, calcium zinc stearate, and tribasic sulfuric acid. Lead or dibutyltin maleate.  The PVC gravity ball according to claim 4 or 8, wherein the foaming agent is azodicarboxylate, hydrazine, Ν'-dinitrosopentamethylenetetramine, p-toluene A hydrazide, sodium hydrogencarbonate or n-pentamidine. 13. The PVC gravity ball according to claim 1, wherein the hollow spherical shell (3) is spherical or ellipsoidal. The PVC gravity ball according to claim 1, characterized in that the hollow spherical shell (3) has a handle (4) on one side or opposite sides.  The method for preparing a PVC gravity ball according to claim 1, wherein the specific step is: placing the weighting layer (2) into the mold, and placing the mold into the 360 degree rotating furnace, at a rotation speed l Heating at -30 rpm, heating at 100-400 ° C, heating time 2 min - 40 min, cooling and demoulding.  The method for preparing a PVC gravity ball according to claim 6, wherein the specific step is: placing the outer layer of the PVC (1) into the mold, and then placing the mold into the 360-degree rotating furnace to rotate the speed. Heating at l-30rpm, heating at 100-400°C, heating time 2min-20min, when the outer layer of PVC (1) is changed from liquid to solid or in semi-liquid semi-solid state, add weight layer (2) The raw material is heated at 100-400 °C for 2 min-40 min to connect the weighting layer (2) with the outer layer of PVC (1) and cool off the mold.