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Polymer microfluidic chip microchannel compression moulding forming device and method thereof

A microfluidic chip and molding technology, which is applied in the field of polymer microfluidic chip microchannel molding devices, can solve the problems of high manufacturing cost, no strict temperature requirements, difficult processing, high precision and complex shape, etc., to achieve The effect of low cost, little heat and pressure influence, easy and efficient automatic production

Active Publication Date: 2015-04-22
重庆大茂伟瑞柯车灯有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN201070823Y discloses a micro-plastic forming device based on laser processing. The pressure generated by laser shock and the heat generated by laser irradiation of plastic are used to obtain the forming of micro-plastics. The patent does not have strict requirements on the temperature of laser processing. The plastics in the patent are miniature parts with a scale of micron, which belongs to micro-volume molding. This patent is not applicable to the micro-structure molding on the surface of macroscopic plastic parts.
Chinese patent CN201210491845.6 discloses a method and device for forming plastic microstructure parts based on laser heating. This is through the direct absorption of laser energy by the surface of the polymer. The method of replicating plastic microstructural features of microstructural features has the disadvantage that light-transmitting glass is generally a hard and brittle material, and the surface is not easy to process microstructural features with high precision and complex shapes, and the manufacturing cost is high

Method used

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  • Polymer microfluidic chip microchannel compression moulding forming device and method thereof
  • Polymer microfluidic chip microchannel compression moulding forming device and method thereof
  • Polymer microfluidic chip microchannel compression moulding forming device and method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1: as Figure 1 to Figure 4 As shown, a polymer microfluidic chip microchannel molding device includes a laser output system, an extrusion die and an automatic control system 5, the laser output system includes a laser 1 and an optical path shaping mechanism 2, and the extrusion die includes an upper die, The lower mold and the mold base 8, the upper mold includes a fixed template 4, and a light-transmitting constrained layer 3, the light-transmitting constrained layer 3 is fixed on the fixed template 4, the fixed template 4 is fixed on the mold frame 8, and the light-transmitting constrained layer 3 is located on the optical path shaping Just below the mechanism 2, the lower mold includes a molding template 6 that is movably connected to the mold frame 8, and a plastic part 7 is placed on the molding template 6. The surface is provided with an absorbing coating 7-1, and the upper surface of the forming template 6 is provided with microstructure protrusions 6...

Embodiment 2

[0054] Embodiment 2: as Figure 1 to Figure 4 As shown, a polymer microfluidic chip microchannel compression molding device, the plastic part 7 adopts PP substrate sheet material, the required microfluidic chip substrate and its surface microchannel 9 are as follows Figure 7 , Figure 8 As shown, the size of the base body is 30×20×1mm, the length and width of the cross-shaped microchannel 9 are 20×10mm, and the section of the microchannel 9 is semicircular with a diameter of 0.2mm.

[0055] The laser 1 is a Nd-YAG solid-state laser, the light-transmitting constrained layer 3 is made of K9 glass, the absorbing coating 7-1 is carbon black, the forming template 6 is mold steel, and a guide rail 8-1 is provided on the inner wall of the mold frame 8, and the forming template 6 are movably connected to the guide rail 8-1.

[0056] The laser output from the laser 1 is reshaped by the optical path shaping mechanism 2. The shape of the laser beam is a cross shape consistent with the...

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Abstract

The invention discloses a polymer microfluidic chip microchannel compression moulding forming device and a method thereof, relates to the field of polymer microfluidic chip forming processing, and particularly relates to a polymer microfluidic chip microchannel compression moulding forming processing method and device which are based on laser transmission heating. According to the polymer microfluidic chip microchannel compression moulding forming device and the method thereof, laser energy field is used for heat source, lasers penetrate a polymer microfluidic chip matrix, a absorbing coating absorbs the lasers, the absorbing coating heats up rapidly after absorbing the laser energy, the absorbing coating with higher temperature heats and melts the surface of the microfluidic chip matrix, a forming template with microstructural embossment is used for extruding the surface of the microfluidic chip matirx, and the polymer microfluidic chip microchannel compression moulding replication forming processing is achieved. The polymer microfluidic chip microchannel compression moulding forming device and the method thereof have the advantages that the operation is simple, the accuracy of replication is good, the efficiency is high and the cost is low. Batch forming processing for polymer microfluidic chips is applicable.

Description

technical field [0001] The invention relates to the field of microfluidic chip forming and processing, in particular to a polymer microfluidic chip microchannel molding device and method based on laser transmission heating. Background technique [0002] Polymer microfluidic chips refer to thermoplastic parts and their combined products with micrometer-scale micropores and microgroove channels on the surface of the substrate. They are the main components of microanalysis systems and microelectromechanical systems. They are widely used in micro With the development of microanalysis systems and microelectromechanical systems in many fields such as electronics, precision instruments, biomedicine and environmental monitoring, the demand for polymer microfluidic chips in the market has increased rapidly, and its processing technology, processing quality and Processing costs put forward higher requirements. At present, polymer microfluidic chips are mainly injection molding, therm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C51/00B29C51/26B29C51/30B29C51/42
Inventor 谭文胜于云程李洪达徐波叶峰
Owner 重庆大茂伟瑞柯车灯有限公司
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