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Injection mold macromolecule alloy material for magnetic card

A polymer alloy and magnetic card technology, applied in the field of polymer alloy materials, can solve the problems of difficult injection molding of thin-walled products, poor processing fluidity, poor thermal stability, etc., to achieve good molding processability, excellent fluidity, Good corrosion resistance

Inactive Publication Date: 2005-01-26
SHANGHAI KUMHO SUNNY PLASTICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The materials used in traditional card making are generally PVC and ABS. After PVC and additives are evenly mixed, the sheet is extruded through an extruder, and then cut to make a finished product. The production efficiency is low and the post-processing process is complicated.
If PVC is directly injected, due to the poor thermal stability and fluidity of PVC, it is difficult to inject thin-walled products, and it contains halogen, which is not conducive to environmental protection; ABS is used as raw material to make cards, although injection molding can be used, but the processing fluidity No, poor impact toughness, especially poor bending resistance in the direction of flow

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0024] Mix 50g of PBT, 34.5g of ABS, 10g of PMMA, 5g of SAN, 0.3g of antioxidant, and 0.2g of lubricant with a small powder machine, extrude through twin-screw extruder, cool, dry, and pelletize to obtain the finished product. The residence time of the material in the screw is 2 minutes, the temperature in the screw is 200-240°C, and the pressure is 60-80Mpa. The mechanical properties of the finished product are as follows: tensile strength (50mm / min) 45.5Mpa, elongation at break (50mm / min) 168.5%, flexural strength 68.9Mpa, flexural modulus 1660.8Mpa, notched impact strength 689.7J / m, melt index (230°C×10kg) 49.9. Bending resistance in the flow direction: bending at 90 degrees, no stress whitening; folding at 180 degrees without cracking, cracking after 5 folds.

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Abstract

The invention discloses injection mold macromolecule alloy material for magnetic card, which is prepared through mixing PBT (polybutylene terephthalate), ABS (acrylon-butadiene styrene copolymer), PMMA (polymethyl methacryate), SAN (benzene ethene-propene copolymer) and auxiliary agent homogeneously by a given proportion, and blending and squeezing with a double screw rod extrusion machine.

Description

technical field [0001] The invention relates to an injectable polymer alloy material for magnetic cards, which can be used to manufacture various information cards, such as magnetic cards, IP cards, mobile phone cards, etc., and belongs to the technical field of polymer alloy materials. Background technique [0002] The materials used in traditional card making are generally PVC and ABS. After PVC and additives are evenly mixed, the sheet is extruded through an extruder, and then cut to make a finished product. The production efficiency is low and the post-processing process is complicated. If PVC is directly injected, due to the poor thermal stability and fluidity of PVC, it is difficult to inject thin-walled products, and it contains halogen, which is not conducive to environmental protection; ABS is used as raw material to make cards, although injection molding can be used, but the processing fluidity No, the impact toughness is not good, especially the bending resistance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/40C08L55/02C08L67/03
Inventor 辛敏琦刘春艳
Owner SHANGHAI KUMHO SUNNY PLASTICS
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