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Polymers Batch Injection

Hard polymer chip batch injection molding/bonding

        Injection molding refers to a method of obtaining a molded article by agitating a fully melted plastic material with a screw at a certain temperature, injecting it into a mold cavity with a high pressure, and solidifying it by cooling. This method is suitable for mass production of complex shaped parts and is one of the important processing methods. There are six stages: mold clamping, injection molding, pressure keeping, cooling, mold opening, and product removal. The injection molding of the microfluidic chip has strong product consistency, higher efficiency, and is more suitable for mass production, and has attracted more and more attention.

        Mold design: Wenxi shares can carry out pre-assessment of all-round mold injection according to the requirements of customers, and can put forward their own rationalization suggestions. Precision Molding: In the mold verification stage, we can help customers solve the problems encountered in the microfluidic chip during trial production and formulate solutions. Through professional design, the microchannels formed by precision molding can achieve small size deviations, high precision and consistency. Strong features. Chip seal: It can provide a variety of sealing methods for perfect sealing and high success rate at one time.

        Specific service process: customer communication - chip mold evaluation - mold design - open experimental mold - mold

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Trial (repair) - samples submitted to the customer - batch injection molding - batch bonding - quality inspection - finished chips.

Microfluidic chip injection molding processing capability:


Chip material: Polymer (including but not limited to PC, PS, PP, PMMA, COC, COP, etc.)


· Flow channel size: ≥100μm


· Channel aspect ratio: minimum 1:1


·Flow channel mold accuracy: <±10%


·Optimum accuracy: ±6μm


· Conventional injection mold mold times: 300,000 molds


·Micro injection molds:50000 times


Injection Molding Capacity: 5,000,000 tablets/year


Injection Molded Microfluidic Chips Show:

Injection Molded Microfluidic Chips Injection Molded Microfluidic Chips

Microfluidic chip sealing:


After many years of technical accumulation, Wenxi Co., Ltd. can select the appropriate sealing method according to the customer's requirements of microfluidic chips, which can meet the requirements of batch sealing of microfluidic chips, microfluidic chips sealing pictures

微流控芯片封合图 硬质聚合物芯片封合效果图

Injection molding case:


The project successfully developed and designed precision molds for a domestic university and mass-produced microfluidic chips.


· Successfully developed a high-precision mold with a 100μm*100μm microfluidic channel


·After the careful design of the mold, it successfully overcomes the molding problem of the product from a 4mm thickness to a large 0.6mm gap.


· Tolerance requirements of ±7um for microfluidic channels with precision die processing


·According to the import of high-precision machining center to meet the consistency of the customer's multi-group micro-channel mold accuracy


· The polishing of the mold and the choice of materials can well meet the customer's product light transmittance> 92% or more

PC, PS, PP, PMMA microfluidic chip batch injection molding