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Production method of plug for paper tube

A plug and paper tube technology, applied in the field of plug preparation, can solve problems such as low pressure bearing capacity, and achieve the effects of improving pressure bearing capacity, prolonging service life and reducing costs

Active Publication Date: 2015-05-13
永新股份(黄山)包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The plug or pipe plug is usually made into a cylinder that is convenient to be inserted into the paper tube, but the plugs in the prior art all have the disadvantage of low pressure bearing capacity, so how to improve the pressure bearing capacity of the plug is an urgent issue. A technical problem to be solved

Method used

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  • Production method of plug for paper tube
  • Production method of plug for paper tube
  • Production method of plug for paper tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] First of all, directly purchase polyethylene, cast polypropylene film and color masterbatch from the market. Then, complete the steps as follows:

[0043] Step ①. Mix polyethylene, cast polypropylene film and color masterbatch according to the weight ratio of 1:1:0.016, mix and stir evenly, and add it to the hopper of the injection molding machine, heat to 195°C, and keep the heating time for 8 seconds to obtain a molten material .

[0044] Step 2. Use the first-stage pre-plasticizing screw of the screw pre-plasticizer to inject the molten material into the second-stage injection rod, control the injection pressure of the first-stage pre-plasticization screw to 16MPa, and control the injection pressure of the second-stage injection rod to 12MPa; Then the molten material is injected into the mold cavity of the injection molding machine through the two-stage injection rod, and the injection time is 7 seconds.

[0045] Step ③. After keeping the pressure for 1.2 seconds, ...

Embodiment 2

[0048] First, choose recycled polyethylene, cast polypropylene film and masterbatches. Then, complete the steps as follows:

[0049] Step ①. Mix polyethylene, cast polypropylene film and color masterbatch according to the weight ratio of 0.8:0.6:0.012, mix and stir evenly, and add it to the hopper of the injection molding machine, heat to 190°C, and keep the heating time for 5 seconds to obtain a molten material .

[0050] Step 2. Use the first-stage pre-plasticizing screw of the screw pre-plasticizer to inject the molten material into the second-stage injection rod, control the injection pressure of the first-stage pre-plasticization screw to 14MPa, and control the injection pressure of the second-stage injection rod to 10MPa; Then the molten material is injected into the mold cavity of the injection molding machine through the second injection rod, and the injection time is 5 seconds.

[0051] Step ③. After holding the pressure for 1 second, pour water into the mold cavity...

Embodiment 3

[0054] First of all, directly purchase polyethylene, cast polypropylene film and color masterbatch from the market. Then, complete the steps as follows:

[0055] Step ①. Mix polyethylene, cast polypropylene film and color masterbatch according to the weight ratio of 1.3:1.4:0.018, mix and stir evenly, and add it to the hopper of the injection molding machine, heat to 200°C, and keep the heating time for 10 seconds to obtain a molten material .

[0056]Step 2. Use the first-stage pre-plasticizing screw of the screw pre-plasticizer to inject the molten material into the second-stage injection rod, control the injection pressure of the first-stage pre-plasticization screw to 20MPa, and control the injection pressure of the second-stage injection rod to 15MPa; Then the molten material is injected into the mold cavity of the injection molding machine through the second injection rod, and the injection time is 10 seconds.

[0057] Step ③. After maintaining the pressure for 1.8 sec...

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Abstract

The invention belongs to the field of auxiliary utensils for manufacture of packaging bags and particularly relates to a plug for a paper tube and a production method of the plug. The plug comprises a hollow tube barrel, wherein a supporting part for improving the bearing strength of the tube barrel is arranged on the tube barrel; the supporting part can be an independent supporting plate, the combination of the supporting plate and a reinforcing plate, the combination of the supporting plate and a supporting strip or the combination of the supporting plate, the reinforcing plate and the supporting strip. Due to the use of the supporting part, the bearing capacity of the plug can be greatly improved, the supporting capacity of the plug for the paper tube is also greatly improved and the stable and reliable work state of the paper tube can kept for a long time. Meanwhile, the cost is remarkably reduced while the bearing capacity is greatly improved and the easiness in large-scale production and manufacture is realized. Polyethylene, casting polypropylene films and color master can adopt secondary recovery raw materials in the preparation process, and thus the wastes are changed into valuables, the competitiveness of products is directly improved and the processing cost is remarkably reduced.

Description

technical field [0001] The invention belongs to the field of auxiliary equipment for manufacturing packaging bags, and in particular relates to a method for preparing a plug for paper tubes. Background technique [0002] Plastic films or prepared packaging bags are usually rolled on hollow paper tubes or hollow paper tubes for easy transportation and use. In order to improve the pressure-bearing performance of hollow paper tubes or hollow paper tubes, usually Both ends are filled with plugs or pipe plugs. [0003] The plug or pipe plug is usually made into a cylinder that is convenient to be inserted into the paper tube, but the plugs in the prior art all have the disadvantage of low pressure bearing capacity, so how to improve the pressure bearing capacity of the plug is an urgent issue. A technical problem to be solved. Contents of the invention [0004] The purpose of the present invention is to provide a method for preparing a plug. The plug includes a hollow tube, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D59/02B29C45/03B29C45/47
Inventor 方洲丁全柱
Owner 永新股份(黄山)包装有限公司
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