Raw material commixed polypropylene multilayered co-extrusion transfusion film and production method thereof

A multi-layer co-extrusion and infusion film technology, which is applied in the direction of layered products, chemical instruments and methods, and synthetic resin layered products, can solve problems such as poor softness, uneven thickness, and unstable weighing, and achieve Ensure the safety of life and save electricity

Active Publication Date: 2014-06-25
QINGDAO HUAREN PHARMA PACKAGING MATERIAL SCI & TECH
View PDF6 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the amount of antioxidants added is not large, there are still hidden dangers to the safety of the human body. Europe has strictly controlled its content
[0004] Traditionally, it is believed that mixing raw materials with a weighing type mixer will cause unstable and ina

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Raw material commixed polypropylene multilayered co-extrusion transfusion film and production method thereof
  • Raw material commixed polypropylene multilayered co-extrusion transfusion film and production method thereof
  • Raw material commixed polypropylene multilayered co-extrusion transfusion film and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] The specific implementation of the present invention is as follows:

Example Embodiment

[0027] Examples:

[0028] A production method of a raw material blended polypropylene multi-layer co-extruded infusion film. The polypropylene multi-layer co-extruded infusion film includes a three-layer structure in sequence, which is an inner layer, a middle layer and an outer layer. The production method steps as follows:

[0029] (1) Inhale the various plastic raw materials of each layer into the hopper of the weighing mixer, and drop them into the weighing (or loss-in-weight) mixer pan according to the set ratio for weighing;

[0030] (2) After the weighing is finished, the weighing pan is opened, dropped into the mixing tank and stirred, the mixing amount is not less than 20kg / hour, and the mixing time is not less than 10s;

[0031] (3) The lower end of the mixing barrel is directly connected with the screw part of the single-screw extruder, and the mixed materials of each layer that are evenly stirred enter the three single-screw extruders respectively, and enter the die throug...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Melt indexaaaaaaaaaa
Login to view more

Abstract

The invention relates to the technical field of a production method for a medical polymer film material and particularly relates to a raw material commixed polypropylene multilayered co-extrusion transfusion film and a production method thereof. The production method comprises the following steps: respectively sucking each plastic raw material on each layer into a hopper scale of a weighing type blender mixer to be weighed; after weighing, enabling the raw materials to fall into an agitating barrel to be agitated; enabling the lower end of the agitating barrel to be directly communicated with a screw rod part of a single-screw-rod extruder; enabling all layers of uniformly-agitated mixed materials to respectively enter three single-screw-rod extrudes and enter a die head respectively by passing through a machine barrel, a filtering net device and a runner, and setting the temperature to 170-250 DEG C; after smelting the mixed materials at high temperature, blowing A-grade clean compressed air through a die and cooling by a water ring; after cooling, drawing and winding by a herringbone clamping plate. According to the raw material commixed polypropylene multilayered co-extrusion transfusion film and the production method thereof, the difficulty that accurate weighing can not be carried out when a rack of a blowing-down water cooling film blowing machine is vibrated is overcome; the weighing type blender mixer is applied to a production process of the polypropylene multilayered co-extrusion transfusion film to obtain the polypropylene multilayered co-extrusion transfusion film with an excellent comprehensive performance; an antioxidant does not need to be added again so that a PVC (Polyvinyl Chloride) transfusion film can be completely replaced.

Description

technical field [0001] The invention relates to the technical field of production methods of medical polymer film materials, in particular to a raw material blended polypropylene multilayer co-extrusion transfusion film and a production method thereof. Background technique [0002] Polyvinyl chloride, referred to as PVC, is a thermoplastic resin polymerized by vinyl chloride under the action of an initiator, and is a homopolymer of vinyl chloride. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins. It has many excellent physical properties and is favored by all walks of life, and is even widely used in the fields of food and medicine. At present, people in the industry have questioned the safety of PVC infusion membranes, and PVC infusion membranes will eventually be obliged to be eliminated. [0003] At present, there have been researches on polypropylene multilayer co-extrusion infusion film, such as the patent...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B32B27/06B32B27/32C08L23/12C08L53/02B29C55/28B29B7/22
Inventor 梁辰骆红宇唐建国张虎隋秀丽
Owner QINGDAO HUAREN PHARMA PACKAGING MATERIAL SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap