COMPONENT TECHNICAL DOSSIER

One-Hand Closure

The closure is intended to open with one thumb, remain attached and move clear of the nose and cheek.

PRE-INDUSTRIAL R2TETHERED CLOSURE

Technical architecture of the tethered closure — P04 · REFERENCE CONFIGURATION

22registered technical fields

12engineering disciplines

6basis / calculated / measured

6targets to be demonstrated

10fields requiring evidence

01 · PRINCIPLE & RATIONALE

Intended function
and associated requirement.

PRINCIPLE

The closure is intended to open with one thumb, remain attached and move clear of the nose and cheek.

WHY IT IS INCLUDED

The bottle can be opened, used and closed with one hand; the lid cannot fall away, become lost or obstruct the face.

DETAILED DESCRIPTION

Opens with the thumb, remains clear of the face and closes through a dual seal. An integral hinge, an approximately 170° stop and a dual plug-and-land seal operate as one dimensional stack. Opening force, hinge endurance and 24-hour leak tightness are targets; the closure is not approved until tolerance stack-up and testing are complete.

02 · TECHNOLOGY STACK

Technologies, roles
and approval gates.

T-01

Integral tethered hinge

Role: Keeps the lid attached throughout use.
Why: Eliminates loose parts and enables one-thumb operation.
Approval gate: Force-displacement and cycling at 4/23/40 °C.

T-02

~170° kinematic stop

Role: Moves the lid clear of the face.
Why: Improves ergonomics without a second component.
Approval gate: Human factors and tolerance stack-up.

T-03

Dual plug-and-land seal

Role: Separates the primary seal from the seating surface.
Why: Reduces sensitivity to ovalisation and particles.
Approval gate: 24-hour leak, pressure decay and drop.

03 · ARCHITECTURE

Function, material
and interfaces.

An integral hinge, an approximately 170° stop and a dual plug-and-land seal operate as one dimensional stack.

MATERIALDuctile PHBH grade to be qualified

CANDIDATE PROCESSInjection moulding · integral hinge

INTERFACES

42 mm mouth
FlowCrown
tamper-evident ring

FUNCTIONAL ARCHITECTURE

01Integral tether
02Stop clear of the face
03Dual plug-and-land seal
04Tactile and audible feedback

04 · MASTER PARAMETER REGISTER

Everything to be defined,
measured or certified.

A field without evidence is never filled with an invented number: it remains “To be determined”, together with the method required to close it. This is what makes the technical record verifiable.

DESIGN BASISTARGETCALCULATED / MEASUREDTO BE VALIDATEDCERTIFICATION REQUIRED

01Identification & function3 PARAMETERS

ID	Parameter	Symbol	Value	Unit	Tolerance	Condition	Method	Status
P04-001	Assembly code	ID	P04	—	To be defined	23 °C / 50% RH unless noted	CAD, CAE or dedicated test	DESIGN BASIS
P04-002	Designation	NAME	One-Hand Closure	—	To be defined	23 °C / 50% RH unless noted	CAD, CAE or dedicated test	DESIGN BASIS
P04-X001	Intended use	USE	To be determined	—	To be defined	Full use cycle	Design review + user study	TO BE VALIDATED

02Risk & maturity2 PARAMETERS

ID	Parameter	Symbol	Value	Unit	Tolerance	Condition	Method	Status
P04-003	Architecture revision	REV	R2	—	To be defined	23 °C / 50% RH unless noted	CAD, CAE or dedicated test	DESIGN BASIS
P04-004	Technology readiness	TRL	2–3	level	To be defined	23 °C / 50% RH unless noted	CAD, CAE or dedicated test	TO BE VALIDATED

03Food contact2 PARAMETERS

ID	Parameter	Symbol	Value	Unit	Tolerance	Condition	Method	Status
P04-005	Declaration of Compliance	DoC	required	document	To be defined	23 °C / 50% RH unless noted	CAD, CAE or dedicated test	CERTIFICATION REQUIRED
P04-X007	Overall and specific migration	MIG	To be determined	mg/kg	Applicable limits	Simulant/time/temperature	Accredited methods	TO BE VALIDATED

04Quality control3 PARAMETERS

ID	Parameter	Symbol	Value	Unit	Tolerance	Condition	Method	Status
P04-006	Lot traceability	LOT	100	%	To be defined	23 °C / 50% RH unless noted	CAD, CAE or dedicated test	TARGET
P04-014	Opening/closing feedback	CLICK	present	—	To be defined	23 °C / 50% RH unless noted	CAD, CAE or dedicated test	TARGET
P04-X006	Process capability	Cpk	To be determined	—	Target to be defined	Critical CTQ	SPC ≥30 samples	TO BE VALIDATED

05Geometry & metrology2 PARAMETERS

ID	Parameter	Symbol	Value	Unit	Tolerance	Condition	Method	Status
P04-007	Clear mouth opening	Dmouth	42	mm	To be defined	23 °C / 50% RH unless noted	CAD, CAE or dedicated test	DESIGN BASIS
P04-X002	Nominal mass	m	To be determined	g	To be defined	23 °C / 50% RH	Balance 0.001 g	TO BE VALIDATED

06Kinematics / sealing / barrier3 PARAMETERS

ID	Parameter	Symbol	Value	Unit	Tolerance	Condition	Method	Status
P04-008	Opening angle	αopen	≈170	°	To be defined	23 °C / 50% RH unless noted	CAD, CAE or dedicated test	TARGET
P04-009	Thumb opening force	Fopen	10–18	N	To be defined	23 °C / 50% RH unless noted	CAD, CAE or dedicated test	TARGET
P04-010	Seal system	SEAL	plug + land	—	To be defined	23 °C / 50% RH unless noted	CAD, CAE or dedicated test	DESIGN BASIS

07Durability & reliability2 PARAMETERS

ID	Parameter	Symbol	Value	Unit	Tolerance	Condition	Method	Status
P04-011	Minimum hinge cycles	Nhinge	≥20	cycles	To be defined	23 °C / 50% RH unless noted	CAD, CAE or dedicated test	TARGET
P04-012	Inverted leak test	tleak	24	h	0 leaks	4 °C and 23 °C	Leak test	TARGET

08Assembly1 PARAMETERS

ID	Parameter	Symbol	Value	Unit	Tolerance	Condition	Method	Status
P04-013	Metal parts or loose gaskets	nsep	0	parts	To be defined	23 °C / 50% RH unless noted	CAD, CAE or dedicated test	DESIGN BASIS

09Material1 PARAMETERS

ID	Parameter	Symbol	Value	Unit	Tolerance	Condition	Method	Status
P04-X003	Commercial grade and supplier	GRADE	To be determined	—	Qualified grade	Production lot	CoA + traceability	TO BE VALIDATED

10Thermal properties1 PARAMETERS

ID	Parameter	Symbol	Value	Unit	Tolerance	Condition	Method	Status
P04-X004	Service-temperature range	Tservice	To be determined	°C	To be defined	Use and transport	Climate chamber	TO BE VALIDATED

11Mechanical properties1 PARAMETERS

ID	Parameter	Symbol	Value	Unit	Tolerance	Condition	Method	Status
P04-X005	Drop resistance	Hdrop	To be determined	m	To be defined	Defined orientations	Instrumented drop test	TO BE VALIDATED

12Recyclability1 PARAMETERS

ID	Parameter	Symbol	Value	Unit	Tolerance	Condition	Method	Status
P04-X008	Territory-specific end-of-life route	EOL	To be determined	—	Country/area defined	Complete assembly	Infrastructure mapping	TO BE VALIDATED

05 · INDUSTRIALISATION

From material
to final inspection.

INPUT

Qualified material

Ductile PHBH grade to be qualified

FORMING

Process within window

Injection moulding · integral hinge

INTEGRATION

Controlled interfaces

42 mm mouth · FlowCrown · tamper-evident ring

RELEASE

CTQ + traceability

Injection moulding, neck assembly and torque/leak control must be separated from filling. Hinge material performance is the principal risk.

06 · DVP&R

A function is approved
only after passing its test.

Test	Requirement	Risk	Method	Condition	Samples	Acceptance	Output
DVP-04	Filled-bottle drop	Breakage/leak	Drop	1 m; water 4 °C; base/side/cap	60	0 leaks; 0 loose parts	Failure map
DVP-07	Closure sealing	Leak	Inverted leak	4 °C and 23 °C; 24 h	30	0 leaks	Leak report
DVP-08	Opening and hinge	Force/fatigue	Force-displacement + cycling	Dry/wet	30	10–18 N; ≥20 cycles	Curves + failures
DVP-12	Food contact	Migration/NIAS	Overall/specific migration	Cold-fill water use	3 lots	Applicable regulatory compliance	Signed report

07 · FAILURE MODES

Failure modes,
causes and controls.

R-01

Body brittleness

EffectBreakage/leak

CausePHA thermal window

ControlDSC/TGA, rheology, process DOE

R-02

Non-uniform walls

EffectBuckling/drop failure

CauseAsymmetric geometry

ControlBlow-moulding CAE + micro-CT

R-03

AeroSkin detachment

EffectLoss of function/loose part

CauseInsufficient seal

ControlPeel, thermal cycling and drop

08 · EVIDENCE POLICY

Traceability
for every parameter.

The design avoids metal parts and loose gaskets. The ductile PHA grade selected for the hinge must remain compatible with the body and the chosen end-of-life route.

This page is the technical register for the R2 configuration. It separates design values, targets, calculations, measurements and certifications. Open fields identify the exact test or document required to close them.

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