LSR Liquid Silicone Collapsible Cup
FEATURES
What problems does Ansix Tech solve for you?
Inconsistent cup wall thickness causing uneven folding? → ✅ We use ultrasonic wall thickness monitoring with real-time compensation — every cup folds identically.
LSR scorching or premature curing in cold runner? → ✅ Our precision-temperature-controlled cold runner system ensures uniform material flow without waste.
High material waste driving up cost? → ✅ Runnerless cold runner system eliminates cured runners — up to 30% direct material saving.
Long cycle times holding back production capacity? → ✅ Optimized mold heating and cure kinetics reduce cycle time to 30–45 seconds per shot — 2× throughput.
How much does Ansix Tech save you?
Cost Category Savings Achieved
Material cost (cold runner vs. conventional) 25–30% reduction
Rework / post-processing >50% reduction due to precision flashing control
Tooling repair over 3-year production 40–60% reduction via premium steel selection
Project lead time (mold + validation) 30–45 days vs. industry average 60–75 days
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Mold Description
Product Materials:
LSR SILICONE
Soft rubber: silicone
Mold Material:
S136ESR
Number of Cavities:
2+2
Glue Feeding Method:
Hot runner
Cooling Method:
Water cooling
Molding Cycle
16.5s
- The mold manufacturing process and product material selection
How does Ansix Tech reduce your risk?
✅ 2000-cycle mold wear test before delivery — you receive no hidden defects
✅ Every mold documented with full-size inspection report and CPK ≥ 1.33 — traceability from day one
✅ Spare parts (ejectors, core pins) included — 24-hour repair turnaround without stopping your production
✅ FDA/LFGB certified food-grade LSR material sourcing — compliance guaranteed for collapsible cups intended for beverage contact
�� Customer-centric framing: For Ansix Tech, a mold is not just a piece of steel — it is your revenue-generating asset. We design each mold with production-grade robustness, built-in temperature uniformity, optimized venting paths, and plug-and-play setup when it reaches your production floor.
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Hard Power Foundation — Equipment That Builds Trust
Mold Machining Equipment — Precision That Defines Your Product Surface
Our mold manufacturing facility is equipped with world-class machining assets that directly impact your LSR Collapsible Cup quality:
Five-axis high-speed machining centers:
Capability: 0.002mm positioning precision, 0.001mm repeatability
Value to you: Cup mold parting lines are laser-smooth — no visible seam where silicone touches lips. Complex cup body curves and base transitions are machined in a single setup without mismatch marks.
Slow wire EDM (electrical discharge machining):
Capability: Creates micro-holes down to 0.03mm diameter and narrow slots
Value to you: Thin-walled cup sections (collapsible bellows) are EDM-cut without structural deformation — the folding mechanism retains springback elasticity across thousands of cycles.
High-precision CNC grinding:
Capability: Surface roughness Ra ≤ 0.05μm for cavity mirror finishes
Value to you: Cups release easily without sticking, and transparent or glossy cup finishes come out perfectly — no post-polishing required on the cup surface.
2.2 Injection Molding Machine Fleet — Scale and Repeatability
Machine range: 30 tons to 1,000 tons clamping force
Full servo-electric drive (all-electric LSR injection molding machines):
Capability: ±0.1% shot-to-shot repeatability
Value to you: From cup #1 to cup #1,000,000 — every cup has identical wall thickness, fold stiffness, and dimensional consistency. No gradual drift that forces you to re-qualify batches.
LSR-specific screw and barrel packages:
Capability: Single-flight, wear-resistant screw with 12:1 to 14:1 L/D ratio, integrated cooling jackets
Value to you: Optimized homogenization of catalyst and crosslinking agents without temperature rise — no partial curing inside the barrel, no material waste from premature vulcanization
Servo-driven LSR metering system with adjustable mixing ratio:
Capability: Precision gear pump delivery of A/B components at 1:1 ratio ±0.5% tolerance
Value to you: Complete curing in every cup — no sticky surfaces, no premature tearing during folding, and the cup passes FDA migration tests without fail.
2.3 Inspection and Testing Equipment — Data That You Can Trust
CMM (Coordinate Measuring Machine):
Capability: Full-mold and full-part dimensional inspection to ±0.0005mm
Value to you: Every mold passes with complete inspection report — you can trace every dimension back to print
Optical measurement system (vision inspection):
Capability: 0.1μm resolution, in-line surface defect detection
Value to you: Zero defective cups shipped — visual sorting eliminated
Tensile / tear strength testing:
Capability: Tests that meet ASTM D412 / D624 standards
Value to you: Every cup batch validated for tear strength at fold lines — no in-field cup failure
Quality commitment: Every mold shipped includes full dimensional report with CPK ≥ 1.33 on critical dimensions — that is six-sigma-ready quality documentation for your internal approval.
3. Core Mold Manufacturing Competitiveness — Measurable Performance Metrics
3.1 Material Selection — Durability by Design
We select mold steel based on your production volume and material requirements, not guesswork:
Mold Component Material Grade Hardness Value to You
Mold base P20 (pre-hardened) HRC 30–36 Cost-effective foundation, moderate production runs up to 100,000 shots
Mold core / cavity (standard) S136 (stainless) HRC 48–52 High corrosion resistance, mirror polish achievable — ideal for food-contact LSR cups
Mold core / cavity (high-volume) H13 / 8407 HRC 50–54 Superior thermal fatigue resistance — 1,000,000+ shot life for long-running production
Wear-prone inserts DC53 / SKD11 HRC 58–62 Extreme wear resistance — filling gate areas last for millions of cycles without rework
High-thermal-conductivity inserts Beryllium copper alloy HRC 36–40 Faster heat dissipation for thick cup base sections — reduced cycle time by 15–20%
Material certification: Each mold shipped with material certs and heat treatment records — no guesswork, no hidden metallurgy.
3.2 Mold Performance Specifications — Tying Specifications to Your Peace of Mind
Parameter Industry-Standard Capability What It Means for Your Collapsible Cup
Mold life (LSR on S136) 1,000,000+ shots with proper maintenance One mold purchase covers years of steady production — no surprise capital spend
Achievable dimensional tolerance ±0.01mm typical; ±0.005mm for precision sealing surfaces Cup rim seals with lid perfectly — no leakage, no customer complaints
Parting surface alignment tolerance Within 0.005mm over entire cavity area Flash limited to 0.02–0.03mm — fully automatic trimming eliminated, manual labor reduced by >80%
Surface finish Ra ≤ 0.05μm (mirror finish for clear cup; Ra 1.6–3.2μm for textured grip surface) Clear cups appear crystal-clear; textured cups feel premium and non-slip
Shrinkage allowance 0.1–0.3% for platinum-cure LSR, pre-calculated in mold cavity design First-shot samples meet target dimensions without requalification — first-time right
Additional mold types we offer:
Cold runner system (standard for LSR): 100% runnerless — eliminates LSR waste from cured runners
Hot runner system (for high-flow LSR grades): Minimal pressure loss, ideal for thin wall sections
Multi-cavity mold: 4, 8, 16, 32, or 48 cavities — up to 48× higher output per shot
Family mold: Multiple cup sizes in one mold — reduce total tooling investment by 30–50%
3.3 Mold Design — Customer Value Built Into Every Feature
Cold runner system design:
Feature: Precision temperature-controlled runner block (cooled to 20–40°C), valve-gated injection
Value to you: Eliminates 100% of material waste — every gram of LSR goes into the cup, not into the scrap bin. 30% material cost reduction directly to your P&L
Gate location and type:
Feature: Pinpoint gate at cup bottom (hidden under cup base), or tab gate at rim (trimmed automatically)
Value to you: Gate mark invisible on final product — no customer-facing cosmetic defect
Venting system:
Feature: 0.02–0.05mm deep vent channels at parting lines, vacuum assist capability
Value to you: Zero air bubbles / voids inside the cup bellows — mechanical folding integrity preserved, no pinhole defects that could trap moisture
Ejection system:
Feature: Air ejectors + stripper plate (LSR parts are flexible — standard ejector pins can puncture)
Value to you: Gentle ejection — no deformation of thin-walled collapsible sections, no post-mold straightening needed
Cooling system design:
Feature: 3D conformal cooling channels (machined or additively manufactured), zone-divided temperature control
Value to you: Uniform mold temperature across all cavities (ΔT ≤ 2°C) — consistent cure in every shot, reduced cycle time by 15–25%, eliminating warpage in the cup body
4. Injection Molding Process Control — Quality Assured at Every Shot
4.1 LSR Material Handling — The First Line of Quality Assurance
Why LSR for collapsible cups? Liquid Silicone Rubber offers unique properties that make it the ideal material for foldable drinking cups — and we select the right grade for your application.
LSR material suppliers (our partnerships) : Dow, Wacker, Momentive, Shin-Etsu, Elkem — globally sourced certified LSR
Recommended LSR grades for collapsible cups:
LSR Brand Key Properties Best For
Wacker ELASTOSIL® LR 3003 series Excellent transparency, high tear strength, food-contact certified Clear collapsible cups
Dow XIAMETER™ LSR Good flow, fast cure, LFGB/FDA certified Colored or opaque cups
Momentive Silopren™ LSR 2670 FC Platinum-cure, FDA compliant, excellent demolding High-volume production runs
Shin-Etsu KE-1950 series Balanced hardness and elasticity, superior tear strength Cups requiring extreme fold cycle life
LSR performance properties:
Operating temperature range: −60°C to +250°C — dishwasher safe without concern
Tensile strength: ≥8 MPa — cup handles repeated folding without tearing at stress lines
Tear strength: ≥25 kN/m — no crack propagation starting from fold lines
Compression set: ≤5–10% (after 22 hours at 100°C) — cup returns to shape after folding, no permanent deformation
Hardness (Shore A): 30A–60A range — customizable from soft-and-flexible to firm-and-sturdy
Food-contact certifications: FDA 21 CFR 177.2600, LFGB, EU 10/2011, BFR XV
Flame rating: UL94 V-0 (for flame-retardant grades if required)
4.2 Pre-Validation: DFM and Mold Flow Analysis — Eliminate Defects Before Steel Is Cut
What DFM (Design for Manufacturing) gives you:
We analyze your collapsible cup CAD file before mold steel is ordered
What we check: Minimum wall thickness for structural integrity, draft angles for easy demolding, gate placement for balanced filling, folding hinge geometry for mechanical fatigue life
Deliverable: DFM report with moldability score, recommended design changes, and schedule/tooling cost impact — absolutely free before contract
What Mold Flow Analysis gives you:
We run full 3D simulation of LSR flow, curing, and thermal behavior using Moldex3D and SIGMASOFT
Prediction accuracy: Cavity pressure and flow front advancement within 3% of experimental values
Defects we identify and eliminate: Weld lines (weak points that could tear during cup folding), Air traps (voids inside the cup wall), Short shots (incomplete cup formation), Unbalanced fill (one cavity filling faster than another), Premature cure at gates (flash or scorch marks)
The ROI of DFM + Mold Flow for your project:
Traditional (no DFM) With Ansix DFM
First shots fail — rework mold — delay 4–6 weeks First shots pass dimensional validation — ready for approval
Try–error iteration 4–5 rounds of mold modification One round of mold validation
15,000–25,000 lost in rework Zero rework cost
10–15 weeks to production 6–8 weeks from DFM approval to first production batch
4.3 Injection Molding Process Optimization — Fast, Stable, Repeatable
Our proven LSR process parameters for collapsible cups:
Parameter Recommended Range Impact on Your Product
LSR mix ratio (A:B) 1:1 ±0.5% — controlled via precision gear pump Complete, uniform curing — no tackiness
Barrel temperature 15–25°C (cooled) Prevents premature curing before injection — full flow into thin cup walls
Mold temperature (heating) 150–200°C (zone-controlled ±2°C) Uniform crosslinking — consistent flexibility across entire cup
Injection pressure 50–150 bar Fills fine details (cup rim threads, base grip texture) without flashing
Injection time 0.5–3.0 seconds (fast fill) No premature curing during fill — complete thin-wall filling
Curing time 30–90 seconds (depending on wall thickness) Complete crosslinking — 100% of cup physically cured before ejection
Clamping force 2–5 tons per cavity (scaled to your mold) No flash — no post-trimming required
Per industry data: LSR cycle times range from 10 to 90 seconds depending on part geometry and mold temperature
For collapsible cups specifically:
Typical wall thickness: 1.5–3.0mm
Standard cycle time: 40–55 seconds
8-cavity mold output: 500–700 cups per hour
32-cavity mold output: 2,000–2,800 cups per hour
Process control system:
All molding parameters (pressure, temperature, speed, time) locked in MES
Real-time viscosity monitoring and adjustment (reduces shot-to-shot variation by up to 62%)
Automatic VP (velocity-to-pressure) switchover based on cavity pressure sensors — part weight repeatability within ±0.5%
Wall thickness consistency guarantee:
Ultrasonic thickness sensor integrated into machine nozzle
Real-time feedback adjusts injection volume within the same shot
Cup wall thickness variation across 10,000 shots: ≤0.03mm — every cup folds identically
4.4 Quality Control and Assurance — Certification You Can Rely On
In-process quality control:
Checkpoint Inspection Method Accept Criteria
Raw LSR material Cert of Analysis from supplier + incoming inspection Meets FDA/LFGB + physical property specs
First shot (T0) Full dimensional CMM inspection + visual inspection All dimensions within spec, 0 visible defects
Batch start (each production run) First article inspection (wall thickness, weight, fold resistance) Matches approved sample — production released
In-process Every 2 hours — weight check + wall thickness (ultrasonic) CPK ≥ 1.33 maintained
Ejection In-mold vision inspection (0.1mm resolution) No visible defects passed to packaging
Final batch Sample retained per batch + 500-cycle folding test Cup survives repeated folding without tearing
Testing standards we follow:
Dimensional: ISO 3302-1 (tolerance class M3)
Mechanical: ASTM D412 (tensile strength & elongation), ASTM D624 (tear strength)
Compression set: ISO 815 — ensure cup returns to shape after folding
Food-contact: FDA 21 CFR 177.2600, LFGB (German food safety), EU 10/2011
Biocompatibility: ISO 10993-5 and ISO 10993-10 if required for medical-grade applications
4.5 Special Materials Capability — One-Stop Solution
Ansix Tech has production-proven experience with:
LSR (Liquid Silicone Rubber) — our core expertise for collapsible cups and food-contact silicone products
PC/ABS — for rigid cup lids and base components
PC — transparent cup lids
PPS + GF40% — high-temperature cup components
PA6 + GF30% — structural cup frames
Overmolding of LSR onto PC/PBT — integrated cup sealing systems
For collapsible cups: We specialize in pure LSR molding (soft, flexible, foldable cups) and overmolding LSR onto rigid plastic substrates (cups with foldable silicone body + hard plastic frame or lid).
5. End-to-End Manufacturing Lifecycle — Speed, Efficiency, and Delivery You Can Trust
5.1 Prototyping (Rapid Prototype Validation)
What we offer:
3D-printed sample of collapsible cup (non-functional) — 3–5 days turnaround
Single-cavity prototype mold (aluminum or pre-hardened steel) — 15–20 days
20–50 shot trial run using production-grade LSR
Value to you: Validate form, fit, and fold function before committing full production tooling — risk assessment cost <10% of full program.
5.2 Full Production Tooling (Mold Manufacturing Lifecycle)
Step Description Lead Time Key Deliverable
DFM & Mold Flow Analyze CAD, run simulation, recommend improvements 3–5 days DFM report + simulation result + tooling cost
Mold design 3D CAD design, cooling layout, gate calculation 7–10 days Detailed mold design drawing for your approval
Mold manufacturing CNC machining, EDM, wire EDM, grinding, polishing 20–30 days First steel sample (T0)
T0 sample First test shot on actual LSR machine 1 day 20–50 sample parts
T1–T3 optimization Dimensional adjustments, flash reduction, cycle optimization 3–5 days each Improved samples; final T3 passes all specs
Mold final inspection Full-dimension CMM report, function test, material certs 2 days Mold delivery + full documentation pack
Pre-delivery validation 2000-shot run + wear inspection report — confirm mold release, venting, and structural durability 2–3 days Pre-ship wear condition report — you know exactly what you are receiving
Total lead time (standard) : 30–45 days from DFM approval to mold ready for shipment
Expedited: 20–25 days (fee applies — validation steps not compromised)
5.3 Production Batches — From Validation to Mass Production
Production Phase Batch Size Activities Quality Check
Pre-production validation 100–500 shots Install mold into your machine (or ours if we manufacture for you); process parameter fine-tuning 100% visual inspection; first-article CMM; 500-cycle fold test
PPAP / first production run 1,000–5,000 shots Full production parameters locked in MES; operator training complete SPC chart; CPK report
Mass production Customer-specified volume (1,000–1,000,000+ shots/month) Automated demolding, in-process quality monitoring Real-time defect tracking; 98%+ yield target
Packaging and labeling As per customer instruction Cup cleaned, inspected, packed in food-safe bag, labeled with batch traceability Retain sample per batch for regulatory compliance
5.4 Maintenance, Support, and Backup — Your Production Guarantee
Included with every mold:
Spare part kit (extra ejector pins, core pins, springs, cooling fittings)
Mold cleaning and storage instruction manual
Recommended spare parts list with part numbers for reorder
Post-delivery support:
First 50,000 shots: 24/7 remote troubleshooting support
Every 200,000 shots: Optional factory-recommended maintenance (adjustment of guides, polishing, gasket replacement)
Normal wear repairs: We keep a master copy of your mold CAD; we can reproduce any component without having your mold shipped back — turnaround 24–72 hours for common wear parts
Lifetime repair: Cost-plus 15% (for non-warranty work) — you are never stranded with a broken mold
Warranty:
Mold structure (not including wear parts): 3 years
Pre-delivery 2000-cycle wear test ensures no hidden defects — we stand behind our work
6. How Ansix Tech Reduces Your Hard Costs — Material, Process, and Efficiency Optimization
6.1 Material Cost Reduction
Cold runner system: Eliminates cured runners — 25–30% material waste elimination
Smart cavity filling via mold flow: Reduce overfilling (which goes to scrap) — 5–8% less material consumption per shot
Family mold layout: If you produce 2–4 cup sizes, one mold with exchangeable inserts — 30–50% lower total tooling cost vs. four separate molds
6.2 Process Efficiency — Cycle Time, Labor, and Energy
Optimized mold heating zone design: Reduces overall cycle time by 15–20% through balanced curing (from 55s → 45s)
8, 16, or 32 cavities: 8-cavity produces 640 cups/hour; 32-cavity produces 2,500 cups/hour — 4× output in same floor space at same labor cost
Fully automated demolding (robotic pick + brush system): 2 operators per shift → 0.5 operators — 75% labor cost reduction
All-electric servo drive machines: Energy consumption 30–50% lower than hydraulic — reduced operating cost per cup
6.3 Rework and Scrap Reduction
Mold flow eliminates weld lines: Prevents folding cracks before they start — reduces field returns by 80%+
Precision venting eliminates bubbles: 100% internal void elimination — zero scrap from trapped air defects
Real-time viscosity monitoring: Reduces process variation to ±0.5% → scrap rate <2% even at high-speed production
6.4 Delivery and Customer Management Cost
One-stop service: Design + DFM + tooling + molding + assembly + packaging — one supplier, one point of contact — reduces customer procurement and program management time by 50%
Early DFM prevents expensive after-cutting changes: Mold modifications after steel cutting can cost 5–10× vs. DFM-driven design change before steel cutting — 75% risk reduction
Spare kit included: You do not need to maintain a separate inventory of high-wear mold components — $2,000–5,000 avoided spare part investment
6.5 Cost-Saving Summary Table (Illustrative — Collapsible Cup Project, 500,000 units/year)
Cost Category Industry Average (without optimization) Ansix Tech Optimized Annual Savings
Material waste 15–20% 2–5% 12,000–18,000
Cycle time / labor 55 sec; 2 operators 42 sec; 0.5 operators 28,000–35,000
Mold rework (first-year) 8,000–14,500
Energy per 100,000 shots $1,200 $700 $2,500
Field returns / defects 3–5% of sales <0.5% 10,000–25,000
TOTAL ANNUAL SAVINGS — — 60,000–95,000
7. Ansix Tech — 28+ Years of Excellence in LSR Manufacturing
Who we are: Ansix Tech is a specialized manufacturer of LSR liquid silicone products and injection molds — with over 28 years of production-proven experience serving customers across food-contact, medical, consumer, automotive, and electronics industries.
Our facilities:
ISO 9001:2015 certified (quality management)
ISO 13485 certified (medical device quality) upon request
Class 100,000 cleanroom (ISO 8) for food-contact and medical-grade production
In-house mold manufacturing (no outsourcing — you deal directly with the team that designs and builds your mold)
In-house injection molding (30–1,000 ton all-electric machines)
In-house metrology lab (CMM, optical measurement, material testing)
What sets us apart:
Capability What it means for you
End-to-end vertical integration One supplier for design, tooling, molding, assembly — no coordination between separate vendors. One P&L, one accountable team
28 years of LSR expertise We already know what works for LSR collapsible cups — we are not learning on your time or budget
Proven LSR design database Hundreds of successful LSR mold projects on file — your project benefits from our accumulated experience
Fully digital quality system Every shot recorded, every dimension traced, every batch validated — full traceability for regulatory audits
Global compliance capability FDA, LFGB, EU 10/2011, ISO 10993, UL94 — wherever you sell, we can certify
8. Let Us Prove It to You — A Personal Invitation
We have talked about precision, cost, quality, and delivery. Now we would like to show you.
Ansix Tech’s specific offer to you:
“We will run a DFM analysis on your LSR Collapsible Cup design before you commit any tooling dollar. You will see, directly in the report:
�� Exactly where we recommend design improvements to avoid mold issues
�� Exactly what the optimized gate location looks like
�� Exactly what cycle time and material usage your cup will achieve
�� Exactly what tooling cost and lead time you can expect
This DFM is free and carries zero obligation — because we are confident that once you see how we think, you will choose to work with Ansix Tech.”
Mr. [Your Name] , we would be delighted to schedule a technical review session with your engineering team. We can review one of your existing products (or a draft design for your collapsible cup project) and demonstrate — in real time — how our DFM approach identifies and solves risks related to weld lines, air traps, shrinkage, and demolding before they become real problems.
Ansix Tech — Turning Liquid Silicone Rubber Into Your Business Advantage, One Precise Mold at a Time. 28+ Years of Excellence. Built for Quality. Engineered for Speed. Priced for Value.
Ansix Tech Co Ltd
If you have any plans related to LSR Liquid Silicone Collapsible Cup , you can contact us at any time. We will turn your ideas into reality, let you realize your dreams, and obtain large orders from the market. Our contact information is info@ansixtech.com. Or contact our CTO, mail: stephen@ansixtech.com
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