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Stretch film and manufacturing method thereof

A manufacturing method and technology of stretch film, applied in the direction of flat products, other household appliances, flexible coverings, etc., can solve the problems of uneven stretch film, affecting use, etc., to improve work efficiency, increase stability, The effect of increasing structural strength

Inactive Publication Date: 2020-07-31
上海唐科新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When cutting, the user is easy to accidentally cut his hand, which has a large safety hazard, and makes the incision of the stretch film uneven, which will affect the next use

Method used

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  • Stretch film and manufacturing method thereof
  • Stretch film and manufacturing method thereof
  • Stretch film and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] refer to figure 1 , is a stretch film disclosed by the present invention, comprising a plurality of main body layers 1 and branching parts 2 fixedly connected to both ends of the main body layer 1 along its length direction, the main body layers 1 are connected end to end through the branching parts 2, and the branching parts 2. It includes an easy-to-tear belt 21 and a separation belt 22. Both sides of the separation belt 22 are detachably and fixedly connected to the easy-to-tear belt 21. The side of the easy-to-tear belt 21 away from the separation belt 22 is fixedly connected to the main body layer 1. A zigzag indentation 221 is provided, and a plurality of separation holes 222 are evenly opened on the indentation 221 . Among them, the two ends of the base layer 211 along its length direction are fixedly connected with indicator strips 3, through which the user can quickly find the opening of the stretch film, which plays the role of indication, and stretching the i...

Embodiment 2

[0055] refer to image 3 , a stretch film manufacturing method, comprising the following steps:

[0056] S1, mixing and granulation: the raw materials used to prepare the stretch film are PA plastic and PE plastic, and the raw materials are sent to the extruder for granulation, and the particle size distribution is 1-1.5mm.

[0057] S2, extrusion casting: using a stretch film machine, the raw materials are prepared into a PA plastic film layer and a PE plastic film layer respectively.

[0058] S3, composite molding: the PA plastic film layer and the PE plastic film layer are bonded in turn to form a stretched film, and the thickness direction of the stretched film is successively the PA plastic film layer, the PA plastic film layer and the PE plastic film layer;

[0059] S4, cutting and forming: the prepared stretch film is cut into several connecting parts 2, and then after coating the self-adhesive layer 212 on both sides of the stretch film, it is evenly laminated with the...

Embodiment 3

[0065] S1, mixing and granulation: the raw materials used to prepare the stretch film are PA plastic and PP plastic, and the raw materials are sent to the extruder respectively for granulation, and the particle size distribution is 1-1.5mm.

[0066] S2, extrusion casting: using a stretch film machine, the raw materials are prepared into PA plastic film layers and PP plastic film layers respectively.

[0067] S3, composite molding: the PA plastic film layer and the PP plastic film layer are sequentially bonded into a stretched film, and the thickness direction of the stretched film is successively the PA plastic film layer, the PA plastic film layer and the PP plastic film layer;

[0068] S4, cutting and forming: the prepared stretch film is cut into several connecting parts 2, and then after coating the self-adhesive layer 212 on both sides of the stretch film, it is evenly laminated with the complete stretch film, and at the same time A release layer 213 with a lateral width ...

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PUM

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Abstract

The invention relates to a stretch film and a manufacturing method thereof. The stretch film comprises a plurality of main body layers and separating and connecting parts fixedly connected to the twoends of the main body layers in the length direction of the main body layers, the main body layers are connected end to end through the separating and connecting parts, each separating and connectingpart comprises an easy-to-tear belt and a separation belt, the two sides of each separation belt are detachably and fixedly connected with the corresponding easy-to-tear belt correspondingly, the side, away from the separation belt, of the easy-to-tear belt is fixedly connected with the main body layer, sawtooth-shaped indentations are arranged on the separation belt, and a plurality of separationholes are evenly formed in the indentations. The separation holes are formed, on one hand, the structural strength of the separation belt is reduced, more labor is saved when the stretch film is torndown, and on the other hand, a notch can be smooth after the stretch film is torn down, and next use is facilitated. In the whole process, a knife or other sharp tools are not needed, safety and reliability are achieved, meanwhile, the separation belt and the easy-to-tear belt can be separated after packaging is completed, the easy-to-tear belt can be fixed to the stretch film due to self-adhesion of the stretch film, the stretch film can be torn down conveniently through the easy-to-tear belt, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of stretched films, in particular to a stretched film and a manufacturing method thereof. Background technique [0002] Stretch film is one of the commonly used packaging materials and is often used in daily food flexible packaging. [0003] In the prior art, a Chinese patent with the authorized notification number CN206551620U discloses a novel high-barrier stretched film, which includes a base film and an asymmetric nylon-polypropylene co-extruded film bonded to the base film. [0004] The above existing technical solutions have the following defects: during use of the stretch film, the scattered small pieces are bundled into a whole, so as to ensure that the product will not be loose or separated under a favorable environment. Generally, the stretch film produced is flat and continuous. The stretch film is neatly wound on the paper tube. When using it, pull one end of the stretch film and turn the paper ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D7/01B26F1/02B26F1/38B65D65/40
CPCB29D7/01B26F1/02B26F1/38B65D65/40
Inventor 余文俊
Owner 上海唐科新材料科技有限公司