OLFA Quality Control Process
A standardized inspection framework applied across OLFA® acrylic sheet products.
From incoming material verification to pre-shipment inspection, OLFA quality control covers production monitoring, dimensional accuracy, surface appearance, color consistency, optical performance, protective covering, packaging and batch records.
What is the OLFA quality control process?
The OLFA® quality control process is a standardized inspection framework used to verify acrylic sheet materials before shipment. It covers incoming material verification, production monitoring, sheet dimensions and thickness, surface appearance, batch color consistency, applicable optical performance, protective covering, packaging and product identification. Inspection results are assessed against product specifications, approved samples, order requirements and applicable technical documents. Product-specific values, including thickness tolerance and optical requirements, remain subject to the relevant product grade, Technical Data Sheet and confirmed sales contract.
Quality control at a glance
The control path follows the material from incoming verification through finished-sheet inspection and shipment release.
01
Material information, batch documentation and approved references.
02
03
Dimensions, appearance and applicable physical or optical properties.
04
Protective covering, labels, quantity and confirmed packing requirements.
05
Sampling, photographs, inspection records and final release status.
Published controls and current references
Confirmed values are separated from criteria that still require final scope or test-method confirmation.
10
Inspection checkpoints
From material verification to inspection-record retention.
≥91%
ΔE ≤ 1
Same-batch color reference
3 mm²
Ten-step quality control process
The following sequence describes the shared control framework. Product-specific inspection values continue to follow the relevant TDS and confirmed order specification.
01
Raw Material Verification
Incoming material information, batch identification, approved references and order requirements are checked before production. Abnormal material is held for review rather than released directly to production.
02
In-Process Monitoring
Applicable manufacturing conditions, sheet formation, color and surface status are monitored during production. Specific cast and extrusion control parameters and inspection frequency are pending business confirmation.
03
Dimension & Thickness Measurement
Sheet length, width and thickness are checked against the product specification and confirmed order. Negative length or width deviation is not accepted under the current inspection specification. Product-specific thickness tolerance follows the applicable TDS.
04
Surface Inspection
The sheet is visually checked for scratches, spots, holes, bubbles, impurities, cracks, dust, contamination and local damage. Applicability by color, thickness and grade is pending business confirmation.
05
Color Consistency Check
Production color is compared with the approved sample or confirmed color reference. The current same-batch reference is ΔE ≤ 1; instrument, color space, lighting and measurement conditions are pending business confirmation.
06
Optical Performance Check
Light transmittance, haze or visual clarity is checked where required by the product grade or order specification. The published inspection release value for transparent acrylic is ≥91% light transmittance.
07
Protective Covering Inspection
Double-sided PE film or protective paper is checked for integrity, print quality and peelability. The current document treats protective-paper damage exceeding 5 cm as a defect; measurement interpretation is pending business confirmation.
08
Packaging & Labeling Verification
Packing method, product name, specification, quantity, production date, package condition and label accuracy are verified against the order. Pallets must be stable and free from visible mold or rain exposure.
09
Final Inspection Before Shipment
Order quantity is confirmed, packages are selected for sampling, documentation and products are checked, findings are photographed and an inspection record is generated before shipment release or hold.
10
Inspection Record Retention
Applicable order, batch, sampling, inspection, defect and shipment-release information is retained for traceability. Record-retention period and system details are pending business confirmation.
Inspection standards and acceptance criteria
Criteria are shown with their current publication status so buyers can distinguish confirmed values from items awaiting final scope or method approval.
| Inspection category | What is checked | Current acceptance basis |
|---|---|---|
| Raw material | Material information and reference sample | Match approved information or sample |
| Dimensions | Finished-sheet length and width | Negative deviation not accepted; positive tolerance pending |
| Thickness | Nominal thickness and measured value | Product-specific TDS and order specification |
| Surface | Scratches, spots, holes, bubbles and impurities | Visual inspection standard; grade scope pending |
| Internal defects | Bubbles, spots and cracks | Defects above 3 mm² not accepted |
| Surface damage | Local damaged area | Damage above 1 cm² not accepted |
| Color | Approved reference and same-batch consistency | Current reference ΔE ≤ 1 |
| Clear-sheet optics | Light transmittance | Transparent acrylic release value ≥91% |
| Protective covering | Integrity, printing and peelability | Order and inspection requirements |
| Packaging & labels | Method, quantity, pallet and identification | Must match confirmed order requirements |
Order-specific requirements and the applicable product Technical Data Sheet take priority where they differ from this general overview.
Cast acrylic thickness tolerance examples
Cast acrylic tolerance increases progressively by nominal thickness and may be adjusted for larger sheet formats. Refer to the applicable OLFA® Cast Acrylic Sheet TDS for the complete table.
| Nominal thickness | Example tolerance |
|---|---|
| 2.0–3.0 mm | ±0.4 mm |
| 11.0–12.0 mm | ±0.7 mm |
| 50.0 mm | ±2.5 mm |
Testing methods and equipment
The following groups describe required inspection capability. Equipment model, calibration cycle and internal or third-party testing responsibility remain subject to final confirmation.
Dimensional
Dimension Testing
- Thickness measurement
- Length and width verification
- Flatness assessment
- Density calculation
Appearance
- Approved reference sample
- Controlled visual inspection
- Same-batch color comparison
- Color measurement where applicable
- Light transmittance
- Haze where specified
- Visual clarity
- Optical consistency
- Impact and hardness
- Heat deflection
- Water absorption and density
- Flammability classification
Real images required: thickness gauge, color measurement equipment, light transmittance or haze meter, and physical-test equipment with model labels visible
Sampling and product-release framework
The current document records Special Standard S1 and three AQL values. Defect-class definitions and rejection rules require final business confirmation before public use as formal acceptance terms.
Sampling levels
Performance-test samples follow the company test-plan schedule. The relationship between Levels A, B and C and formal defect categories is not yet confirmed.
Level A
AQL 0
Level C
Classification definitions
The labels below are proposed mappings only and must not be treated as approved acceptance criteria.
Level A
Suggested mapping: critical defect
Level B
Suggested mapping: major defect
Level C
Suggested mapping: minor defect
Pending business confirmation: defect examples, lot-rejection rule, reinspection process, rework, downgrade and disposal procedure.
Batch traceability across three information layers
The target framework links the finished product to order, production and shipment information. Exact retained fields and retention periods require final confirmation.
Order identification
What was ordered
- Customer order number
- Product name and color
- Thickness and sheet dimensions
- Confirmed quantity
Production identification
- Raw-material batch
- Production batch and date
- Line or casting group
- Inspection-record number
- Package or pallet number
- Packing list
- Shipment date
- Container or logistics reference
Certificates and compliance
OLFA maintains documented compliance with applicable material, environmental and product requirements. Available compliance documentation is provided based on the confirmed product grade and order specification.
SGS REACH Compliance
OLFA® acrylic sheet products comply with REACH requirements. Specific certificate available upon request.
SGS RoHS Compliance
OLFA® acrylic sheet products comply with RoHS requirements. Specific certificate available upon request.
Quality Management System
OLFA quality management documentation is maintained in accordance with applicable manufacturing standards. Details available upon request.
Additional Compliance
OLFA products comply with applicable material, environmental and application-specific requirements. Specific documentation available subject to product grade and order confirmation.
Product-specific quality documents
This page explains the shared quality framework. Product pages and technical documents retain grade-specific dimensions, tolerances, performance values, applications and ordering information.
How this page relates to product pages
This page explains the quality control framework shared across OLFA® acrylic sheet products. Product pages provide grade-specific dimensions, thickness ranges, performance values, applications and ordering information. Where a product requires a different tolerance, optical target or inspection method, the applicable product Technical Data Sheet and confirmed order specification take priority.
Cast Acrylic Sheet
Product specification
This QC page