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Polystyrene nanocomposites for blow molding applications

A nano-composite, polystyrene-based technology, applied in the fields of injection stretch blow molding and injection blow molding of styrene-based polymers, can solve problems such as product deterioration and waste

Inactive Publication Date: 2014-11-26
FINA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Packaged goods generally keep longer by reducing their interaction with oxygen and water, which often spoil products, causing waste and other problems

Method used

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  • Polystyrene nanocomposites for blow molding applications
  • Polystyrene nanocomposites for blow molding applications
  • Polystyrene nanocomposites for blow molding applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0075] To evaluate the effect of clay-based nanocomposites, PS nanocomposites prepared by commercially available polystyrene PS535 from Total Petrochemicals were mixed with 5% by weight of CLOISITE 10A, which was purchased from Southern Clay Products. , the nanocomposite is referred to herein as 535 / 10A. The 535 / 10A blend was compounded with a twin screw extruder and molded into preforms on a Netstal injection molding machine. The preforms were conditioned at room temperature for at least 24 hours before they were stretch blow molded into bottles on an ADSG62 linear injection stretch blow molding machine.

[0076] In the ISBM process, 535 / 10A preforms exhibited lower shrinkage and limited warpage compared to pure PS535 preforms. Thus, the preform was successfully blow molded into bottles under the four conditions shown in Table 3 below.

[0077] Table 3 Summary of processing conditions for PS535 and 535 / 10A preforms

[0078]

[0079] Figure 3 shows the preform before hea...

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Abstract

Disclosed is a polystyrene based polymer / layered compound nanocomposite for injection blow molding or injection stretch blow molding of articles. The nanocomposite can reduce shrinkage and warpage to the preform during the reheating process compared to neat polystyrene. The incorporation of layered compounds can increase the processability of PS preforms, help improve heating efficiency, and improve bottle mechanical properties. The layered compound can be treated with chemicals or compounds having an affinity with the styrene monomer or polystyrene, thus producing a treated layered compound having an affinity with the styrene monomer or polystyrene. The monomer and the layered compound can be combined prior to polymerization. The polymer and layered compound can be combined by solution mixing in a solvent. The layered compound can also be incorporated into the mixture by compounding a polymer product with the layered compound, or the combination of any of the above three approaches

Description

technical field [0001] Embodiments of the invention generally relate to blow molding of polystyrene. In particular, embodiments of the invention relate to the incorporation of layered compounds such as clay nanoplatelets into polystyrene for injection stretch blow molding and injection blow molding of styrene-based polymers. Background technique [0002] Generally, high-quality packaging materials are packaging materials with good oxygen and moisture barrier properties. Packaged goods generally keep longer by reducing their interaction with oxygen and water, which often spoil products, causing waste and other problems. Polymeric materials are often used as packaging materials because they provide good oxygen / moisture barrier and their appearance and shape can be easily controlled. Plastic is also used instead of glass to make bottles because they are lighter, more resistant to shattering when dropped, and are less expensive. A few common polymeric materials used for packa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C49/00
CPCB29C49/0005C08K9/04B29C49/06B29D22/003B29K2105/162B29K2025/00Y10T428/1352Y10T428/1397B29C2949/0715
Inventor 孙鹿邑J·索萨J·阿圭里M·勒兰德T·哈里斯
Owner FINA TECH
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