A production method of an apertured film and a vacuum punching device thereof

A production method and film technology, applied in the field of perforated film production and its vacuum punching device, can solve the problem of low energy consumption, save energy consumption, save winding equipment, unwinding equipment and transportation links, reduce cost effect

Active Publication Date: 2019-12-17
XIAMEN YANJAN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defect of existing production method, propose a kind of simple operation, the production method of the perforated film with small hole and macropore structure and its vacuum punching device of low energy consumption now

Method used

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  • A production method of an apertured film and a vacuum punching device thereof
  • A production method of an apertured film and a vacuum punching device thereof
  • A production method of an apertured film and a vacuum punching device thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Cooperate image 3 and Figure 4 As shown, using 35% LDPE 100AC, 55% LLDPE 7050 and 10% functional masterbatch as raw materials, during production, it is extruded through a single-screw extruder to form a cast film 1. Entering the vacuum punching device, in the vacuum suction area 5 of the vacuum forming drum 8, due to the effect of the internal and external pressure difference, a perforated film 2 with small holes 9 is formed. When the temperature of the cast film reaches 110°C, the temperature of the extrusion die can be controlled to make the cast film reach the required temperature, and the vacuum degree can be adjusted to 0.05MPa by adjusting the speed of the vacuum pump. On the other hand, the ultrasonic atomizing device 6 located directly opposite the vacuum suction area 5 of the vacuum forming drum 8, the atomized moisture makes the humidity of the air sucked by the vacuum suction area 5 reach 70%, so that when the moisture in the air adheres to the open air wi...

Embodiment 2

[0040] Cooperate Figure 5 and Image 6 As shown, using 25% LDPE 100AC, 65% LLDPE 9500 and 10% functional masterbatch as raw materials, during production, it is extruded through a single-screw extruder to form a cast film 1. The casting film 1 enters the vacuum punching equipment at high temperature for vacuum punching to form an apertured film 2 with small holes 9. At this time, the temperature of the casting film during vacuum punching is detected by an infrared thermal imager FLUKE Ti110-9HZ. At 115°C, the temperature of the extrusion die can be controlled to make the cast film reach the required temperature, and the vacuum degree can be adjusted to 0.08MPa by adjusting the speed of the vacuum pump. The ultrasonic atomizing device 6 located directly opposite the vacuum suction area 5 of the vacuum forming drum 8 makes the atomized moisture adhere to the high-temperature perforated film 2 after the film is perforated, and will be taken away due to the effect of evaporative ...

Embodiment 3

[0042] Cooperate Figure 7 and Figure 8 As shown, using 20% ​​LDPE 100AC, 65% LLDPE 9500 and 15% functional masterbatch as raw materials, during production, it is extruded through a single-screw extruder to form a cast film 1. The casting film 1 enters the vacuum punching equipment at high temperature for vacuum punching to form an apertured film 2 with small holes 9. At this time, the temperature of the casting film during vacuum punching is detected by an infrared thermal imager FLUKE Ti110-9HZ. At 112°C, the temperature of the extrusion die can be controlled to make the cast film reach the required temperature, and the vacuum degree can be adjusted to 0.05MPa by adjusting the rotation speed of the vacuum pump. The ultrasonic atomizing device 6 located directly opposite the vacuum suction area 5 of the vacuum forming drum 8 makes the atomized moisture adhere to the high-temperature perforated film 2 after the film is perforated, and will be taken away due to the evaporativ...

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Abstract

The invention discloses a production method for a perforating thin film and a vacuum perforating device of the production method. The production method comprises the specific production steps that a cast film enters the vacuum perforating device, in a vacuum suction mouth area of a forming drum, due to the effect of inside-outside pressure difference, the perforating thin film of a funnel-shaped small hole structure is formed, and the hole shape of the perforating thin film is identical to that of a forming mesh cage on the outside of the forming drum; meanwhile, an ultrasonic atomization device located on the opposite face of the vacuum suction mouth area of the forming drum conducts surface spray cooling on the perforating thin film with small holes, and thus the surface temperature of the perforating thin film is lowered to 50 DEG C-room temperature; and according to the production method, the shape of the vacuum-perforated perforating thin film of the small hole structure can be set fast, flattening deformation does not occur to the perforating thin film when the perforating thin film enters a tension control procedure and a mechanical perforating procedure, and thus fast and synchronous production of small hole vacuum perforating production and large hole mechanical perforating production is achieved. Therefore, the functions of energy saving, cost reduction, improving of production efficiency and prevention of material secondary pollution are achieved.

Description

technical field [0001] The invention relates to a production method of an apertured film, in particular to a vacuum punching device and a production method of the apertured film with small holes and macroporous structures. Background technique [0002] Apertured films are widely used in the surface layer of sanitary napkins and sanitary pads, also known as dry mesh. However, the perforated film has the disadvantages of plastic feeling, poor flexibility, and slow absorption speed. In order to improve these shortcomings, CN200620057798.4 mentioned a small-hole touch film structure, which is a directional second film on the first side of the film. Surface-extending capillary pores, which form raised film corners on the second surface of the film: at the same time, micropores with larger opening area are formed on the second surface of the film toward the first surface, and the second surface of the film is When the film is applied, it is used as a front surface in contact with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D7/01B26F1/24B26F1/26
CPCB26F1/24B26F1/26B29D7/01
Inventor 李世煌林燕巫朝胜肖德全
Owner XIAMEN YANJAN NEW MATERIAL CO LTD
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