Production technology of stretching film

A production process and stretch film technology, which is applied to flat products, household utensils, and other household utensils. It can solve the problems of no printing function, no function, etc., and achieve the effects of increasing popularity, easy dismantling, and solving industry problems.

Inactive Publication Date: 2009-11-04
孙和永
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing stretch film is just a simple smooth stretch film, and has no other functions, especially now customers want to mark the company's trademark or some patterns on the stretch film, but the existing stretch film The film machine does not have any printing function

Method used

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  • Production technology of stretching film
  • Production technology of stretching film

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Embodiment Construction

[0026] The present invention is implemented like this:

[0027] A stretch film production process, including a feeding process, the feeding process enters the raw material solid LDPE particles through the feed port into the subsequent process, and the subsequent process includes the following processes,

[0028] 1) High-temperature melting process: Melt LDPE particles into liquid LDPE, and the melting temperature is 120°C to 160°C; the inside of the solid particles is driven by a screw, and the external electric heating ring, and the high-temperature (about 140°C) hot wall slowly melts the LDPE melt into liquid

[0029] 2), die extrusion process: the liquid LDPE in step 1) is extruded from the die with high pressure, and the extrusion volume is balanced with the raw material intake in the feeding process;

[0030] 3), traction cooling process: the LDPE forming film extruded from the die is drawn by the rotating roller to the winding process, the circulating cooling water insi...

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Abstract

The invention relates to a stretching film, in particular to a production technology of stretching film provided with a printing procedure. The invention comprises a feeding procedure in which raw material solid LDPE granules are delivered to the sequential procedures through a feeding orifice, the sequential procedures comprise: 1) high temperature melting procedure; 2) die orifice extruding procedure; 3) pulling and cooling procedure; 4) printing procedure; and 5)rolling and packaging procedure. The invention has the beneficial effects that: (1) the stretching film produced by a stretching film machine can be used for printing company trademarks and other contents according to the requirements of customers and can be demounted conveniently; (2) when the stretching film is produced, the pattern printing procedure can be finished in one step at the same time, exerting no impact on the productivity; and (3) various patterns can be printed according to the requirements of customers and can be used in advertisements.

Description

technical field [0001] The invention relates to a stretch film, in particular to a stretch film production process with a printing process. Background technique [0002] Stretch film, also known as stretch film, was the first in China to produce PVC stretch film with PVC as the base material and DOA as the plasticizer and self-adhesive function. Due to environmental protection issues, high cost (compared to PE, relatively large proportion, small unit packaging area), poor stretchability and other reasons, when PE stretch film was produced in China from 1994 to 1995, it was gradually eliminated. PE stretch film first uses EVA as self-adhesive material, but its cost is high and tasteful. Later, PIB and VLDPE are used as self-adhesive material. The base material is now mainly LLDPE, including C4, C6, C8 and metallocene PE. (MPE). [0003] Early LLDPE stretched film was mostly blown film, from single layer to two-layer and three-layer; now LLDPE stretched film is mainly produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C55/00B29C59/00B29L7/00
Inventor 孙和永
Owner 孙和永
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