Unlock instant, AI-driven research and patent intelligence for your innovation.

Post-Consumer Waste Membrane Recycling Processes and Systems

A technology of cleaning and blowing film, applied in grain processing, plastic recycling, recycling technology, etc., can solve the problems of unpleasant, pockmarked, odor and other problems of finished products, and achieve the effect of improving market attractiveness

Active Publication Date: 2017-10-31
WISCONSIN FILM & BAG
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Often, the usefulness of such used films is limited due to the presence of high levels of fouling, which in turn cause serious disposal problems as well as unpleasant characteristics in the finished product, such as odor, discoloration, and "pocked" appearance

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
  • Post-Consumer Waste Membrane Recycling Processes and Systems
  • Post-Consumer Waste Membrane Recycling Processes and Systems
  • Post-Consumer Waste Membrane Recycling Processes and Systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] Provided is a method and apparatus for recycling post-consumer waste (PC) such as PC film, due to labels adhered to the outside of the film and various marks placed on the film during shipment and other Pollutants, the PC film is difficult to recycle. In order to provide a viable blown film product that can be reused, labels, adhesives, other applied markings, and contaminants must be removed from the PC film. The purpose of this disclosure is to process PC films (LLDPE and LDPE) into near virgin quality blown film products which can be used alone or in combination with virgin material.

[0042] For the purposes of this application, the term "virtually virgin" shall refer to the PC film quality compared to the virgin material of the blown film product. A test for this quality is the visual gel detection test. For the purposes of this application, "gel" is the unmelted portion or unmelted contamination of the PC film. In this test, the amount of gel is determined on a...

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

No PUM Login to View More

Abstract

A method and system for processing post-consumer waste linear low density polyethylene film or a feedstock of low density polyethylene film into near virgin quality blown film products. The method includes tearing a supply of film in a shredder wherein a surface area of ​​the film is exposed, including delaminating the film. The torn film feed was washed in a water bath including surfactant. The membrane is agitated in a water bath including a surfactant where contaminants on the membrane are removed from the membrane. The washed membrane is ground into smaller pieces and additional washing of the ground membrane is performed in a rotary friction washer and a settling float tank where additional contaminants are removed from the membrane. The ground film was then dried and compacted without the addition of water to a pellet of near virgin quality blown film product.

Description

[0001] Cross References to Related Applications [0002] This patent application claims priority to U.S. Patent Application No. 13 / 796,143, filed March 12, 2013, and U.S. Patent Application No. 14 / 063,045, filed October 25, 2013, both entitled "Post-Consumer ScrapFilm Recycling Process", both of these patent applications are assigned to the assignee of the present invention, and the entire contents of these two patent applications are hereby incorporated by reference. technical field [0003] The present invention relates to processing for recycling waste, more particularly to processing for recycling post-consumer waste linear low-density polyethylene film and post-consumer low-density polyethylene film. Background technique [0004] The recycling of post-consumer plastic waste has attracted much attention for being environmentally friendly and "green". The majority of urban, mixed post-consumer plastic waste is known to include polyethylene terephthalate (PET) materials s...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B29B17/00B29B17/04C08J11/00B02C23/08
CPCB29B17/04B29B2017/0015B29B2017/0289B29K2023/0625B29K2023/0633B29K2105/065B29L2007/008Y02W30/62B29K2023/06B29B17/0026B29B17/02B02C23/08B02C23/38B02C23/40B29K2105/26B29B17/0036B29B17/0412C08J11/04C08J2323/06
Inventor 罗伯特·弗朗西斯·库莱萨詹姆士·J·菲尼理查德·韦恩·卡尔斯泰特丹尼尔·威廉·布莱克布克尔·加雷·哈克阿比·玛丽·约翰逊
Owner WISCONSIN FILM & BAG