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A kind of preparation method of environment-friendly automatic packaging film

An environmentally friendly and automatic technology, which is applied to flat products, household appliances, and other household appliances. It can solve the problems of high cost and poor stretchability, and achieve the effect of firm packaging, strong pulling force, and easy transportation and storage.

Active Publication Date: 2021-06-18
青岛源欣兴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

However, the stretch film has the problems of environmental protection, high cost and poor stretchability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] A kind of preparation method of environment-friendly automatic packaging film of the present invention comprises the following steps:

[0031] a. Film blowing:

[0032] (1) Material selection: the outer layer and the middle layer are made of metallocene, linear polyethylene, high pressure polyethylene, white masterbatch and UV masterbatch, which has heat insulation effect; the inner layer is made of metallocene, linear polyethylene, high pressure polyethylene Blended with tackifier masterbatch, it has light-shielding effect.

[0033] (2) Use three-layer co-extrusion equipment for film blowing, and control the temperature of the outer layer, middle layer and inner layer. The temperature of the outer layer and middle layer is controlled at 140-210°C, and the temperature of the inner layer is controlled at 120-160°C. Control the three-layer extrusion amount, the three-layer extrusion mass ratio is 1:1:2, and make a film. The thickness of the film is 0.08mm, which is diffe...

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PUM

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Abstract

The invention discloses a method for preparing an environment-friendly automatic packaging film, which comprises the following steps: a. film blowing; b. bonding section; c. preparation. Through the preparation method, the present invention obtains a packaging film with high strength, strong tensile force, good toughness, and puncture resistance, which is applicable to various high and low temperature environments, and in the packaging process of packaging, only one kind of base material can be used. The packaging work greatly improves the work efficiency; the present invention can be used for the packaging of large items such as grass and cotton, and one package can carry 2.5-3 tons of packages, and at the same time, it is automatically edge-sealed, does not loose the package, does not explode the package, and is easy to transport And storage, high economic benefit.

Description

technical field [0001] The invention belongs to the technical field of package packing, and in particular relates to a preparation method of an environment-friendly automatic packing film. Background technique [0002] Stretch film is also called stretch film and heat shrinkable film. It is the earliest in China to produce PVC stretch film with PVC as the base material and DOA as the plasticizer and self-adhesive function. Stretch film is prepared by casting method. Due to the long and narrow flow channel and fast flow speed, the melt temperature range is generally controlled at 250°C to 280°C, and the temperature of the cast cooling roll is controlled at 20°C to 30°C. , The winding tension should be low, generally within 10kg, so as to facilitate the migration of the viscous agent and reduce the internal stress of the finished film. [0003] Stretch film has a wide range of applications and is widely used in many enterprises, shops, factories and other places. It can not o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D7/01
CPCB29D7/01
Inventor 孙常荣徐学友
Owner 青岛源欣兴新材料科技有限公司