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Multistep separation of plastics

A technology for recycling plastics and plastics, which is applied in the fields of plastic recycling, mechanical material recycling, recycling technology, etc.

Inactive Publication Date: 2005-08-24
MBA POLYMERS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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Method used

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  • Multistep separation of plastics
  • Multistep separation of plastics
  • Multistep separation of plastics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 40

[0143] Example 40 illustrates various antioxidants and UV stabilizers that may be present in waste plastics and ultimately present in recycled plastics. Example 39 illustrates how impact modifiers can be used to improve the toughness of PP materials. Example 41 describes the compounding of PP material with a reinforcing filler - glass fiber.

[0144] PC material

[0145] In another aspect, the present invention provides recycled plastic comprising primarily recycled PC material. PC, PC / ABS and flame retardant grades of these materials are some of the major components of durable goods logistics.

[0146] The PC material includes about 5 to about 9 parts by weight polycarbonate. The PC material also typically includes about 0 to about 94 parts by weight ABS. In addition, the PC material generally includes 0 to about 20 parts by weight of additives, such as antioxidants, heat stabilizers, UV stabilizers, flame retardants, antistatic agents, foaming agents, impact modifiers, c...

Embodiment 1

[0151] The performance of embodiment 1.ABS product

[0152] The refrigerator-derived plastic-rich feedstock was produced first by a US source. Freezer liners, plastic pans and other plastic parts are separated from the metal components and cut into small pieces. The small pieces or flakes are then subjected to a separation process. After the separation process, an almost 100% pure ABS product consisting of various grades of ABS flakes is obtained.

[0153] The blended ABS products were extruded, molded and tested. Light colored ABS products were formed from the blended ABS products with properties between extrusion and injection molding grade virgin ABS as described in Table 5.

[0154]

Embodiment 2

[0155] Example 2. FT-IR Spectroscopy, Dynamic Rheology and Atomic Force Microscopy of ABS

[0156] The nearly pure mixed ABS stream from US refrigerators described in Example 1 was separated into thin (2.8 mm) fractions using a slot thickness separator. Hybrid ABS and thin ABS investigated by Fourier transform infrared (FT-IR) spectroscopy and dynamic melt rheology. Examination of "Hybrid ABS" by Atomic Force Microscopy.

[0157] To measure the FT-IR spectra of the samples, part of the injection molded samples were pressed into thin films at 180°C. Then the small piece of film is pressed in a diamond anvil optical cell to a comparable film thickness and the FT-IR spectral absorptivity is less than 1.0 through the transmission test. figure 1 FT-IR transmission spectra obtained for hybrid ABS are shown. The sample contained acrylonitrile / butadiene / styrene polymer (ABS), metal oxide (most likely titanium dioxide), carbon black (as evidenced by the sloping baseline), and a smal...

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Abstract

Techniques for creating recycled plastic materials from waste plastic materials are described. A recycled plastic material contains at least a primary polymer, a secondary polymer, and residual additives. Predetermined properties of the recycled plastic material can be controlled by selecting the types of waste plastic materials used in the recycling feed, determining the types and amounts of recycled plastic material recovered from a separation process and blending the recycled plastic material with other materials.

Description

[0001] This application claims the benefit of Provisional Application No. 60 / 372 001 filed April 12, 2002, which is incorporated herein by reference. This application is also related to US Application No. 14, 2003, entitled "Multi-Step Separation of Plastics," filed April 14, 2003, by Lawrence E. Allen, III, Brian L. Riise, Paul C. Allen, and Ron C. Rau. _____, also incorporated herein by reference. technical field [0002] The present invention relates to recycled plastics. Background technique [0003] Products made of or incorporating plastic become part of almost any workplace or home environment. The plastics typically used to manufacture these products are formed from virgin plastics. That is, the plastic is produced from petroleum and not made from existing plastics. After the product has passed its useful life, it is generally sent to a waste disposal or recycling facility. [0004] Recycled plastic has many benefits over virgin plastic produced from petroleum. ...

Claims

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Application Information

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IPC IPC(8): B29B17/00B03C7/00B29B17/02B29C48/04B29C48/08B29C48/15B29C48/16B29C48/29C08J11/06C08K3/04C08K3/22C08L25/12C08L101/00
CPCB29B2017/0237B29K2055/02B29K2105/065B29C47/0004B29B2017/0279B29K2105/0047B29B17/0026B29C47/0021B29B17/02B29C47/02B03C7/00B29L2030/00B29K2105/0044B29B2017/0241B29K2105/26C08J11/06B29K2105/0005B29L2031/7622B29K2023/12B29K2105/0032B29C47/1045B29K2069/00B29C47/1063B29B2017/0224B29B2017/0262B29K2105/16B29B2017/0265B29C47/0054B29K2077/00Y02W30/62B29C48/15B29C48/29B29C48/022B29C48/04B29C48/08B29C48/0017B29C48/16B29C48/2886Y02W30/52
Inventor B·利斯L·E·艾伦三世R·C·劳M·B·比德尔
Owner MBA POLYMERS INC
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