Hi-Rel Plastics & Molding Corp. provides precision label application services for plastic components, bottles, containers, housings, assemblies, and finished products for OEMs and manufacturers throughout California and across the United States.
Labeling can provide product branding, identification, instructions, warnings, barcodes, traceability information, regulatory information, decorative graphics, and other product-specific information. Our labeling capabilities can be integrated with plastic molding, filling and sealing, assembly, inspection, printing, and packaging to provide customers with a more complete contract manufacturing solution.
As an ISO 9001, AS9100 and ISO 13485 certified manufacturer, Hi-Rel Plastics & Molding supports demanding manufacturing programs for medical, aerospace and defense, automotive and electric vehicles, electronics, industrial, research and laboratory, cosmetics and personal care, household and consumer, food and beverage, pharmaceutical-related, and other industries.
We also offer both Class 10,000 / ISO Class 7 cleanroom environments and Class 100,000 / ISO Class 8 cleanroom environments for qualifying manufacturing and assembly programs requiring controlled environments.
Whether your project requires labels applied to molded plastic parts, custom bottles, containers, packaging, assemblies, or finished products, Hi-Rel Plastics & Molding can evaluate your part geometry, label specifications, production quantities, placement requirements, and application.
Accurate label application requires more than placing a label onto a product.
Label performance and finished appearance can depend on:
Hi-Rel Plastics & Molding evaluates these variables along with customer drawings and specifications to develop an appropriate labeling process.
Our goal is to provide accurate positioning, consistent appearance, dependable adhesion, and repeatable production from part to part.
Pressure-sensitive labels (PSLs) are among the most commonly used labeling technologies for plastic products and packaging.
Pressure-sensitive labels typically use an adhesive-backed label supplied on a release liner. Once removed from the liner, the label is applied to the product surface using controlled pressure.
Depending on the specific label supplier and application, label constructions can potentially use materials such as:
Pressure-sensitive labels can be used for:
Actual label construction and adhesive selection should be matched to the plastic substrate and end-use environment.
Hi-Rel Plastics & Molding can combine label application directly with our plastic injection molding services.
Injection molded parts can move from molding and inspection into downstream operations such as:
This allows customers to receive a more complete finished component rather than coordinating molding and labeling through separate suppliers.
Potential labeled injection molded components can include:
Custom bottles and containers often require labeling for branding, identification, instructions, warnings, product information, or regulatory purposes.
Our blow molding services manufacture custom hollow plastic products for medical, laboratory, consumer, automotive, cosmetics, household, packaging, industrial, and other applications.
Label application can potentially be integrated into a larger blow molding program involving:
Combining bottle manufacturing and labeling through one supplier can reduce unnecessary transportation between vendors and simplify production coordination.
Hi-Rel Plastics & Molding can support label application on qualifying custom plastic bottles and containers manufactured in-house or supplied as part of an approved production program.
Potential applications can include:
Label requirements vary according to bottle geometry, label size, resin, surface finish, decoration area, product contents, and customer specifications.
For new bottle designs, the available labeling area should ideally be considered during product development rather than after tooling has already been completed.
Plastic products can require labels on different surface geometries.
Hi-Rel Plastics & Molding can evaluate labeling requirements for qualifying:
Surface geometry can affect placement accuracy, wrinkle formation, adhesion, alignment, and finished appearance.
The size and shape of the available label panel should therefore be evaluated together with label dimensions and product design.
Hi-Rel Plastics & Molding also supports in-mold labeling (IML) for appropriate plastic molding applications.
Unlike conventional post-molding label application, in-mold labeling places a preprinted label inside the mold before plastic is introduced.
During the molding cycle, the label integrates with the molded plastic component, creating a decorated part directly from the molding process.
Potential advantages can include:
Potential applications can include:
IML requires coordination among label design, material compatibility, mold design, automation, molding conditions, and product geometry.
Our injection molding capabilities include automation and in-mold labeling/in-mold decorating support for qualifying projects.
Pressure-sensitive labeling and in-mold labeling are fundamentally different manufacturing processes.
A finished molded component is produced first and the adhesive-backed label is applied afterward.
This method provides flexibility for:
The label is incorporated during the molding cycle.
This process can provide an integrated decorated surface with high durability and eliminates a separate post-molding label-application step.
The appropriate approach depends on:
Hi-Rel Plastics & Molding can evaluate both manufacturing approaches for qualifying projects.
Label application and pad printing both provide product identification and decoration but offer different advantages.
Labels can contain:
They can also provide flexibility when product information changes between models or production configurations.
Pad printing transfers ink directly onto the plastic surface using a flexible printing pad.
Pad printing can be appropriate for:
The appropriate process depends on artwork, part geometry, durability requirements, number of colors, production volume, and end-use environment.
Hot stamping is another decorating option for plastic products.
Hot stamping uses heat and pressure to transfer foil or pigment onto the component and can be particularly effective for:
Label application is typically more suitable when a product requires detailed information, barcodes, warnings, larger graphics, or label variations.
Because Hi-Rel Plastics & Molding offers multiple decorating technologies, customers can select an appropriate process based on their specific product requirements.
Many OEM products require identification throughout manufacturing, assembly, distribution, or service.
Labels can potentially contain information such as:
The actual information and traceability requirements are determined by the customer and applicable product specifications.
Hi-Rel Plastics & Molding can integrate approved labeling requirements into the manufacturing and assembly workflow.
Barcode labels can provide efficient identification and tracking of components, assemblies, packaging, or finished products.
Potential applications may include:
Barcode format, data structure, verification requirements, label material, and placement are customer-specific and should be defined before production.
Products serving medical, industrial, electronics, automotive, consumer, and other industries may require warning or informational labels.
These labels can potentially communicate:
Hi-Rel Plastics & Molding applies labels according to customer-approved artwork and specifications.
The product manufacturer remains responsible for determining the regulatory labeling content applicable to its finished product.
Good label performance begins with an appropriate surface.
Contamination such as oils, mold-release residue, dust, moisture, or other materials can affect adhesion.
Plastic resin can also influence adhesive performance because different polymers have different surface characteristics.
Important considerations can include:
For demanding applications, label and adhesive compatibility should be evaluated before full production.
Consistent label positioning is important for both appearance and functionality.
Placement requirements can be particularly important when labels must align with:
Hi-Rel Plastics & Molding can develop appropriate fixturing and process controls for ualifying production programs where label-placement consistency is important.
Label application should ideally be considered during product design.
Important design considerations may include:
Our engineering team can evaluate these considerations together with overall plastic-part manufacturability.
By combining engineering, mold manufacturing, molding, and downstream labeling, Hi-Rel Plastics & Molding can help customers consider decoration requirements before tooling is finalized.
Hi-Rel Plastics & Molding provides custom mold and tooling manufacturing for plastic products.
For products requiring labeling or in-mold decoration, tooling design can consider:
Integrating secondary-process requirements during tooling development can reduce costly product changes later in the program.
Hi-Rel Plastics & Molding provides engineering support and 3D printing / rapid prototyping to help customers evaluate product concepts before production tooling.
Prototype components can help evaluate:
Customers can then transition from prototype development to mold manufacturing, production molding, labeling, assembly, and packaging.
Labels are frequently one stage within a larger finished-product packaging process.
Our filling and sealing services can be combined with label application for qualifying bottle and container programs.
A coordinated production workflow can potentially include:
This approach can help customers consolidate bottle manufacturing, filling, labeling, and packaging with one manufacturing partner.
After labeling, products can move into our custom packaging services.
Packaging configurations can potentially include:
Combining labeling and packaging reduces the need to send finished parts to an additional contract packager.
Labels may need to be applied before or after final assembly depending on product design.
Our assembly services support qualifying programs involving:
Hi-Rel Plastics & Molding can develop the production sequence around the individual product requirements.
Hi-Rel Plastics & Molding is ISO 13485 certified and supports manufacturers of medical devices, diagnostics, laboratory products, healthcare equipment, and pharmaceutical-related products.
Medical components can require labels for identification, warnings, product information, traceability, instructions, or other customer-specified information.
Our cleanroom medical injection molding services support qualifying medical manufacturing programs.
Hi-Rel Plastics & Molding offers both Class 10,000 / ISO Class 7 cleanroom environments and Class 100,000 / ISO Class 8 cleanroom environments.
The required environment for labeling, assembly, or packaging depends on the individual product and customer requirements. Not every label-application operation requires or is appropriate for cleanroom processing.
Hi-Rel Plastics & Molding is AS9100 certified and supports aerospace and defense manufacturing programs.
Our aerospace and defense manufacturing capabilities include custom molded and machined components, housings, covers, assemblies, and secondary operations.
Aerospace and defense components can potentially require:
Label materials and application requirements should be selected according to the actual service environment and customer specifications.
Electronic and electrical components frequently require identification and instructional labeling.
Potential applications can include:
Labels can provide branding, electrical information, operating instructions, warnings, barcodes, and product identification.
Automotive and EV products may require labels for identification, instructions, tracking, warnings, or branding.
Potential plastic components can include:
Hi-Rel Plastics & Molding can combine injection molding, blow molding, labeling, assembly, and secondary operations for qualifying automotive programs.
Labels play an important role in cosmetics and personal-care packaging where branding and appearance are critical.
Potential applications include:
Our combination of blow molding, injection molding, labeling, pad printing, hot stamping, filling and sealing, assembly, and custom packaging can support qualifying cosmetics and personal-care manufacturing programs.
Industrial products often require identification that remains legible throughout manufacturing, installation, and use.
Potential applications can include:
Label selection should account for environmental conditions such as temperature, oisture, chemicals, abrasion, and expected product life.
Consumer and household products frequently require labels for branding, instructions, identification, or packaging information.
Potential products can include:
Hi-Rel Plastics & Molding can combine plastic manufacturing with labeling and other product-finishing operations to provide more complete finished components.
Hi-Rel Plastics & Molding operates under established quality management systems supporting demanding OEM manufacturing programs.
Our certifications include:
Customer-specific labeling programs can incorporate requirements for:
Appropriate process controls are determined according to the project and customer specifications.
Using the same manufacturing partner for plastic production and labeling can provide several advantages.
Customers can reduce the number of separate molders, decorators, label applicators, assemblers, and packaging companies involved.
Parts can move directly from molding to secondary operations without repeated transportation between vendors.
Molding, labeling, assembly, and packaging can be scheduled as part of one production program.
Fewer supplier transfers can reduce unnecessary handling of cosmetic or precision components.
Quality requirements can extend through molding and downstream finishing operations.
Customers can receive labeled, assembled, inspected, and packaged products rather than unfinished molded components.
Hi-Rel Plastics & Molding provides far more than stand-alone label application.
Our capabilities include:
This combination allows customers to move from engineering and tooling through molding, decorating, labeling, assembly, inspection, and final packaging with one California-based manufacturing partner.
Hi-Rel Plastics & Molding is located in Riverside, California and supports OEMs throughout Riverside, San Bernardino, the Inland Empire, Los Angeles, Orange County, San Diego, Southern California, Northern California, and across the United States.
Whether your project requires label application, pressure-sensitive labeling, bottle labeling, plastic component labeling, product identification labels, in-mold labeling, injection molded part labeling, custom bottle manufacturing and labeling, assembly and labeling, or complete contract manufacturing, our team can review your requirements.
Need a manufacturing partner capable of producing your plastic components and completing labeling, decorating, assembly, and packaging?
Contact Hi-Rel Plastics & Molding to discuss your project.
For an accurate quotation, provide available CAD files or drawings, plastic material, part or container dimensions, label specifications, label size, label material, artwork, desired placement, placement tolerance, estimated production quantities, annual usage, assembly requirements, packaging requirements, and applicable quality specifications.
Our team can review your project and determine how Hi-Rel Plastics & Molding’s plastic manufacturing, labeling, and secondary-service capabilities can support your production requirements.
Ensures accurate positioning and alignment on every component.
Repeatable processes ensure uniform results across all parts.
Labels applied for long-lasting durability and resistance to wear.
Supports a wide range of label types, sizes, and application requirements.
