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PE packaging bag production process

A production process and packaging bag technology, which is applied in the production process of PE packaging bags, can solve the problems of lack of installation tightness, achieve excellent yield tensile strength and toughness, increase the connection amount, and optimize the production process.

Active Publication Date: 2020-09-01
嘉兴市聚力包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] like Figure 5 As shown, it is a PE packaging bag for placing powdery industrial raw materials, which includes a bag body 1, an externally threaded pipe 2 arranged on the bag body 1, and an end cap 3 threadedly connected to the externally threaded pipe 2; For the PE packaging bag, since the size of the externally threaded pipe is much larger than the size of the exhaust valve, if the installation process of the exhaust valve is adopted, there will be a problem of lack of tightness in the installation; therefore, a new solution needs to be proposed to solve this problem

Method used

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  • PE packaging bag production process
  • PE packaging bag production process
  • PE packaging bag production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment one, the production technology of PE packing bag, comprises the following steps:

[0051] A. Blow molding:

[0052] (1) Raw materials: PE stretch film and modified ingredients;

[0053] (2) Equipment: three-layer plastic co-extrusion blown composite film unit;

[0054] (3) Working process: feeding, setting the reel-shaped PE stretch film on the turret, and adding modified ingredients in the ingredient adding cylinder; debugging, according to the thickness of the required packaging bag and modified ingredients characteristics, adjust the operating parameters of the three-layer plastic co-extrusion blown composite film unit; winding, after the equipment is in normal operation, the processed composite film is rewound;

[0055] (4) Technical effect: A three-layer plastic co-extrusion blown composite film unit is adopted, so that according to actual needs, the inner layer, outer layer or two layers of composite functional layers of PE stretch film can be added a...

Embodiment 2

[0072] Embodiment two, the difference between embodiment two and embodiment one is that the production process of PE packaging bag also includes printing and dyeing:

[0073] (1) Equipment: computer gravure printing machine;

[0074] (2) Raw materials: water-based PE ink, PP treatment agent;

[0075] (3) Workflow: Prepare the printing template according to the pattern to be printed, and prepare the water-based PE ink according to the printing color. After the preliminary preparation is completed, the roll-shaped composite film that has not yet completed the bag making is set on the feeding of the computer gravure printing machine end, then debug and plate-align, then start normal printing, and finally wind up the printed composite film;

[0076] (4) Technical effect: The printing and dyeing steps are set before the bag making, which optimizes the process steps and effectively improves the production efficiency; in the existing technology, the printing and dyeing steps are gen...

Embodiment 3

[0077] Embodiment three: the difference between embodiment three and embodiment two is that the production process of the PE packaging bag also includes hemming:

[0078] (1) Equipment: folding machine;

[0079] (2) Work process: Set the roll-shaped composite film that has not yet completed bag making on the feeding end of the folding machine, then debug the folding machine according to the specifications and sizes of the composite film, and run the folding machine normally after debugging, and finally close the Composite film with folded edges;

[0080] (3) Technical effects: such as Figure 4 As shown, there is a fold on both sides of the formed PE packaging bag, so that the unfolded area of ​​the empty PE packaging bag can be effectively reduced without affecting the capacity of the PE packaging bag, thereby facilitating transportation.

[0081] It should be noted that the production process of PE packaging bags also includes embossing: select the embossing roller accordi...

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Abstract

The invention discloses a production process of a PE packaging bag, and relates to the technical field of packaging bags. The production process aims at solving the problem that due to the fact that the size of an external threaded pipe is far larger than that of an exhaust valve, mounting tightness is lacked. According to the key point of the technical scheme, the production process of the PE packaging bag comprises the following steps of A, blow molding; B, bag making; C, punching; and D, mounting of an external threaded pipe, wherein a hot-press base is preheated to 230 DEG C, the externalthreaded pipe is placed on the hot-press base, a mounting hole is aligned to the external threaded pipe, the external threaded pipe is sleeved in the mounting hole, a press-down air cylinder is controlled to push a press-down mold for pressing down, and finally the press-down air cylinder pulls up the press-down mold to take out the PE packaging bag with hot pressing completed. According to the production process of the PE packaging bag, the mounting process of the exhaust valve is used for reference and optimized, and therefore the technical effect of being suitable for mounting of the external threaded pipe is achieved, and then connecting precision of the external threaded pipe and a bag body is ensured.

Description

technical field [0001] The invention relates to the technical field of packaging bags, more specifically, it relates to a production process of PE packaging bags. Background technique [0002] PE is the abbreviation of polyethylene, which is a kind of thermoplastic resin obtained by polymerization of ethylene. Because of its good chemical stability and the ability to resist most acid and alkali erosion, the packaging bags made of PE are widely used. In the packaging of chemical raw materials. [0003] For different chemical raw materials, it is necessary to customize PE packaging bags with corresponding characteristics. For example, for packaging chemical raw materials that generate gas, an exhaust valve needs to be installed on the packaging bag, and for packaging chemical raw materials that are prone to electrolytic deterioration, you need Provide an antistatic polyester layer. [0004] Such as Figure 5 As shown, it is a PE packaging bag for placing powdery industrial r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B31B70/00B31B70/64B31B70/20B31B70/84B31B70/88B31B70/26B29C55/28
CPCB29C55/28B31B70/00B31B70/20B31B70/26B31B70/64B31B70/844B31B70/88B31B2155/003
Inventor 林超潜
Owner 嘉兴市聚力包装有限公司
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