Polyvinyl chloride (PVC) magnetic-plastic blending door gasket and manufacture method thereof

A door seal and blending technology is applied in the field of PVC magnetic-plastic blended door seal and its preparation, which can solve the problems of many production steps, excessively long magnetic strips, unfavorable production management, etc., so as to improve the sealing performance and use deadlines, eliminate quality and product waste, and reduce labor and material costs

Active Publication Date: 2013-02-20
ANHUI HIGASKET PLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there are many production steps and a long process, which increases equipment and labor costs and increases energy consumption; it is also not conducive to production management.
In addition, when wearing the magnetic strip, there will be a phenomenon that the magnetic strip is too short or the magnetic strip is too long, so that the magnetic strip does not cooperate with the door seal rubber sleeve, which affects the quality and use effect of the door seal, resulting in waste of materials and increased costs.

Method used

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  • Polyvinyl chloride (PVC) magnetic-plastic blending door gasket and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Weigh 68 parts of PVC, 32 parts of CPE, 30 parts of environmental plasticizer, 70 parts of magnetic powder, 4.5 parts of stabilizer, 0.75 parts of dispersant, CaCO 3 After mixing 5 parts and 2 parts of pigment, then carry out high-speed mixing and oil filling at 70°C for 12 minutes, then unload the material and put it in a cold mixing pot and stir for 15 minutes; finally put the material into a twin-screw extrusion with L / D≥24 Machine granulation, the granulation temperature is 130-150 ℃, to make PVC magnetic-plastic blended pellets; then extrude the door seal rubber sleeve through a single screw machine, and apply voltage and magnetization to it after cooling and setting, so that the door seal rubber sleeve After passing through the electric plate, the magnetic powder forms a directional arrangement to show magnetism; finally, the magnetized door seal rubber sleeve is cut and cut at a 45-degree angle, stored for at least 12 hours, and then melted or bonded to make PVC...

Embodiment 2

[0050] Weigh respectively 71 parts of PVC, 28 parts of CPE, 35 parts of environmental plasticizer, 62 parts of magnetic powder, 4 parts of stabilizer, 0.6 part of dispersant, 10 parts of hydrotalcite, 2.2 parts of pigment and mix them, then mix them at 120 After 20 minutes of high-speed mixing and oil filling at ℃, unload the material and put it in a cold mixing pot and stir for 15 minutes; finally put the material into a twin-screw extruder with L / D≥24 for granulation, and the granulation temperature is 130-150 ℃. PVC magnetic-plastic blended pellets; then extrude the door seal rubber sleeve through a single screw machine, and apply voltage and magnetization to it after cooling and shaping, so that the magnetic powder of the door seal rubber sleeve passes through the electric plate to form a directional arrangement and show magnetism ;Finally, the magnetized door seal rubber sleeve is cut and cut at 45 degrees, stored for 15 hours, and then melted, welded or bonded to make a P...

Embodiment 3

[0052] Weigh 75 parts of PVC, 25 parts of CPE, 38 parts of environmental plasticizer, 55 parts of magnetic powder, 3.5 parts of stabilizer, 0.8 parts of dispersant, CaCO 3 After mixing 15 parts and 2.5 parts of pigment, then carry out high-speed mixing and oil filling at 100°C for 18 minutes, unload the materials and put them in a cold mixing pot and stir for 15 minutes; finally put the materials into a twin-screw extrusion with L / D≥24 Machine granulation, the granulation temperature is 130-150 ℃, to make PVC magnetic-plastic blended pellets; then extrude the door seal rubber sleeve through a single-screw machine, and apply a magnetic field to it after cooling and shaping, so that the door seal rubber sleeve The magnetic powder forms a directional arrangement in the magnetic field to show magnetism; finally, the magnetized door seal rubber sleeve is cut and cut at a 45-degree angle, stored for at least 12 hours, and then melted, welded or bonded to make a PVC magnetic plastic...

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Abstract

The invention provides a polyvinyl chloride (PVC) magnetic-plastic blending door gasket and a manufacture method thereof. The PVC magnetic-plastic blending door gasket is obtained by joint extrusion molding of PVC equal heat plasticity plastic and magnetic powder, processing steps of a magnetic stripe and processing steps that the magnetic stripe is inserted in a door gasket rubber sleeve are reduced, manufacturing processes of the magnetic door gasket are effectively shortened, processing time is saved, labor and material cost are reduced, work efficiency is greatly improved, and simultaneously an adsorptive property of the door gasket is improved.

Description

[0001] technical field [0002] The invention belongs to the technical field of magnetic door seals for refrigerators, freezers and other electrical appliances, and in particular relates to a PVC magnetic-plastic blended door seal and a preparation method thereof. [0003] technical background [0004] Due to the dual requirements of sealing and easy opening, magnetic door seals are used for the opening and closing of doors such as refrigerators and freezers. Most of the door seals are made of modified non-toxic soft PVC. The magnetic strip is inserted into the magnetic strip airbag of the door seal rubber sleeve, and its function is to seal the door of the box and isolate the inside of the box from the external environment. [0005] The existing door seal is composed of PVC door seal rubber sleeve and magnetic strip. The manufacturing process also needs to be completed in three steps. First, the door seal rubber sleeve and magnetic strip are prepared separately, and finall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/28C08K13/02F25D23/02
Inventor 时乾中
Owner ANHUI HIGASKET PLASTICS CO LTD
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