Silicone Rubber Injection Molding

Packson's state-of-the-art facilities consist of a 1000㎡ certified clean room, which is equipped with 14 sets of Liquid Silicone Rubber (LSR) injection machines. This enables Packson to produce up to 50 million medical-grade LSR components per year, ensuring that clients' needs are met efficiently and effectively.

Moreover, Packson's clean room is certified to the 100K Level, ensuring that all products produced within this environment meet the highest quality standards. With the use of advanced technologies and stringent quality control processes, Packson guarantees that its medical LSR components are not only highly precise but also biocompatible, temperature resistant, and compliant for use in medical and healthcare applications.

As a professional China-based medical silicone rubber molding company, Packson takes pride in providing reliable, high-quality medical LSRsilicone moldingservices to its clients. Whether it’s production volumes or specific requirements, as one of silicone injection molding companies, Packson can meet your needs with confidence, knowing that you're entrusting your product’s success to expert hands.

Silicone Rubber Injection Molding Details and Options

Silicone Injection Molding Details and Options
Lead time	Make your mind in real in 10-30 days; including 24-hour quote responses with design-for-manufacturing (DFM) feedback
What kind of products should Choose LSR	Drug delivery systems
	Skin contact devices
	Valves
	Syringe stoppers
How to Choose LSR/HCR in your project	Determining whether LSR or HCR injection moulding is the best choice for your project depends largely on how much production you will need. In general, HCR injection molding is better applied for small volume production. On the contrary, LSR injection molding is more suitable for massive production.
LSR VS TPE	Advantages:
	Reasonable wall thicknesses
	Cored uniform wall thickness
	No sharp corners
	Gradual transition from thick to thin thickness
	Limitations:
	Not for high heat or extreme cold applications
	Not inherently UV stable
	Need to follow conventional good plastic part design guidelines
Industries	Automotive;
	Consumer Products;
	Special Applications;
	Medical And Healthcare Consumables And Devices
Benefits of LSR in Medical areas	High Biocompatibility
	Inorganic and hypoallergenic nature
	Lack of odor/taste
	Ozone & UV-safe
	Thermal stability
	Lifetime service of the part
Benefits of LSR Solution	Reduce waste
	Leverage the material's characteristics
	Deliver consistently high precision parts and components
	And all of these at global competitive conditions
Mold Cavities	Single, Multi-cavity, and Family molds;
Machines Available	200 press tonnage
Inspection and Certification Options	ISO9001,ISO13485,ISO 7&8 Medical Clean Room Molding
Mold Life	Less than 5000 shots
The Tolerances in the Steel	Maintain the tolerance ±0.005mm/0.002inch
The Tolerances in the part	Maintain the tolerance ±0.01mm/0.005inch
Material	Standard Silicone
	Medical-grade silicone
	Optical-grade silicone
	Fluorosilicone
Mold Finish	PM-FO TO & F1
	SP1 C1 TO A2
Other Options	Consultative Design and Tool Services for free
	Final Finishing Options
	No MOQ
	Quick-turn shipping in as fast as 1 day

Custom Silicone Rubber Injection Molding Service For Your Business

Liquid molding silicone rubber partshave the feature of durability with good tensile strength and are used to high volume, tight tolerance. Therefore it is widely used in various industries especially for medical parts.

Here are the advantages of liquid silicone rubber:

Excellent insulating properties, good for tight tolerance/precision components

Good tensile strength with high/low-temperature extremes

Good resistance for water, oxidation also some chemical solutions like acids.

Silicone Rubber Injection Molding Process

The silicone dousing unit starts in two parts

Composed A and composed B pumps one Part A silicone and one Part B silicone via separate hoses to the static mixer. Cylinder A contains the basic material. while cylinder B contains a catalyst. In addition, color is pumped to the static mixer via another hose. The mixed components are then fed into the throat of the injection molding barrel by way of a shut-off valve. This is the whole silicone injection molding process.

Sealing against the Silicone Rubber Molded Parts

Once the silicone material is inside the barrel, a shot of the cool mixed silicone advances to the mold as the nozzle seals firmly against the silicone rubber liquid mold.

Injection

The nozzle shut-off valve opens and a measured shot of cool liquid silicone is injected into a hot (275F to 390F) clamped silicone rubber molded parts.

Barrel retracts from the mold

The nozzle shut-off valve opens and the barrel retracts from the silicone rubber liquid mold, while the screw begins to build another measured shot of cold liquid silicone.

Closes and repeats the procedure

After the cycle is complete, the mold opens and the piece and flashing can be taken off automatically or by an individual worker. After that, the mold closes and repeats the procedure.

Post-molding process

After removing the article from the mold, the post-molding process may include demisting, post-curation, inspection, and packing.

Silicone Rubber injection Molding Application

Molding Parts

-Silicone rubber injection molding can be qpplied in molding parts. Moulded part is a good way for low quantity production from dozen to hundred of the part even millions of parts. The molding part is better than the part machined by CNC or 3D printing with the same material. The right choice for resin used in the molding part allows for a wide range of properties. Mold is essential medial for the molding part. So molds machined by CNC and Wire cut EDM with high precision and tolerance are enable make thousands of parts.

Certifications

-We cercitified with ISO9001, ISO13485 and equipped with ISO 8 medical cleanroom molding

Rapid Prototye

-Rapid processing mold with low cost and enable to make molded products with 10 days at a competitive price.

Advantages Of LSR molding

Durable: LSR injection molding produces parts that can withstand elevated temperatures, making them ideal for automotive or aerospace applications. Unlike plastic injection molding, LSR parts are often fire retardant and resist warping.

Tensile Strength: Silicone LSR parts are strong, making them suitable for a variety of industries.

Flexibility: Silicone LSR parts can exhibit elongation up to six times their original length before breakage, demonstrating remarkable flexibility.

Accuracy: The LSR molding process offers a high level of accuracy in production, ensuring precise, high-quality parts.

Automation: The LSR injection molding process can run continuously with minimal supervision, enhancing efficiency and productivity.

As a mould part manufacturer, we will do our best to meet all the needs of customers.

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