Equipment for manufacturing easy-tear type thin plastic film

A technology of plastic film and manufacturing equipment, applied in the field of manufacturing equipment of easy-tear plastic film, can solve the problems of poor tearing effect, expensive equipment, and high manufacturing cost, and achieve good bonding strength, good surface tension and adhesion performance, and occupation. small space effect

Active Publication Date: 2009-05-27
ZHEJIANG GOLDSTONE PACKING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of the packaging bag directly made of non-directional stretched polypropylene film as the heat-sealing layer is that the tearing effect is poor, and it is difficult to tear out the tear in a certain direction, let alone in a straight line.
[0004] The packaging bag made of biaxially stretched polypropylene film as the heat-sealing layer has the disadvantages of expensive equipment and high manufacturing costs. In addition, due to the use of biaxial stretching, the mechanical and physical properties of the film are reduced.

Method used

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  • Equipment for manufacturing easy-tear type thin plastic film
  • Equipment for manufacturing easy-tear type thin plastic film
  • Equipment for manufacturing easy-tear type thin plastic film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] figure 1 It is a structural schematic diagram of the first structure of the product of the present invention, showing the first specific embodiment of the present invention.

[0031] See figure 1 , the present embodiment is a kind of manufacturing equipment of easy-tear type plastic film, comprises a stretching and regularizing device 1, a discharge reel 91 and a rewinding reel 92; On the direction along film 5 advances, described The unwinding reel 91 is arranged before the stretching and regularizing device 1, and the rewinding reel 92 is arranged after the stretching and regularizing device 1; the unwinding reel 91 releases the plastic film 5, and the rewinding reel 92 rolls Stretch the regular plastic film 5.

[0032] Described each stretch regularizing device 1 comprises the heating roller 2 that is used for heating film 5, is used for the cooling roller 3 that film 5 is cooled, is used to press film 5 on the pressure roller 4 on cooling roller 3, is used for Th...

Embodiment 2

[0035] figure 2 It is a structural schematic diagram of the second structure of the product of the present invention, showing the second specific embodiment of the present invention.

[0036] See figure 2 , the present embodiment is basically the same as Embodiment 1, the difference is that: the equipment also includes a corona treatment device 6; in the direction along the film 5 travel, the corona treatment device 6 is arranged on the stretching regularization device 1 and between the rewinding reel 92. The linear velocity of the cooling roller 3 is 1.1 times of the linear velocity of the heating roller 2 .

[0037] In this embodiment, the corona treatment device can ensure that the finally obtained finished film has better surface tension and adhesion performance, and has better bonding strength when the external additional layer is compounded. The cooling roll is a driving roll, the press roll and the cooling roll are arranged in pairs, and the film passes between the...

Embodiment 3

[0039] image 3 It is a structural schematic diagram of the third structure of the product of the present invention, showing the third specific embodiment of the present invention.

[0040] See image 3 , the present embodiment is basically the same as Embodiment 2, the difference is that: the number of the stretching regularization device 1 is two, and the two stretching regularization devices 1 are successively arranged in series repeatedly, and the film 5 is carried out according to the same direction. Stretch regularization. The linear velocity of the cooling roller 3 is 5 times of the linear velocity of the heating roller 2 .

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Abstract

The invention discloses manufacturing equipment for an easy-torn plastic membrane, comprising at least a stretching and regulating device. The stretching and regulating device comprises a heating roller which is used for heating the membrane, a cooling roller which is used for cooling the membrane and a compression roller which is used for pressing the membrane on the cooling roller; the linear velocity of the cooling roller is higher than the linear velocity of the heating roller. The manufacturing equipment of the invention has simple and compact structure, thereby occupying small space; in addition, the plastic membrane produced by the invention has the advantages that the membrane is easily torn when being torn along the direction of stretching and an opening is linear.

Description

technical field [0001] The invention belongs to the technical field of plastic packaging, and in particular relates to an easy-tear plastic film manufacturing equipment. Background technique [0002] Traditional polypropylene packaging bags are mostly made of non-directionally stretched polypropylene film as the heat-sealing layer, or biaxially stretched polypropylene film as the raw material. [0003] The disadvantage of the packaging bag directly made of non-directionally stretched polypropylene film as the heat-sealing layer is that the tearing effect is poor, and it is difficult to tear out the tear in a certain direction, let alone in a straight line. [0004] The packaging bag made of biaxially stretched polypropylene film as the heat-sealing layer has the disadvantages of expensive equipment and high manufacturing costs. In addition, due to the use of biaxial stretching, the mechanical and physical properties of the film are reduced. . Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C55/02B29C71/00B29L7/00
Inventor 张文锋孙国锦
Owner ZHEJIANG GOLDSTONE PACKING
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