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Technology & construction

Comfort, performance and security in one entrance system

Technology overview
The 2026 catalogue presents a carbon-steel thermal-break approach, multi-stage sealing and a layered insulated door leaf. Exact construction and performance depend on model, size, hardware and test configuration.
Paired pull handles coordinated across contrasting EPIN TOMCIM door surfaces
01

Thermal-break approach

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A carbon-steel thermal-break concept is used to reduce direct heat-transfer paths through the entrance structure. The applicable section design and thermal data are confirmed for the selected configuration.
02

Sealing & insulated core

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Multiple sealing lines, dense core materials, insulation layers and controlled joints are presented as a coordinated strategy for air, sound and temperature control.
03

Whole-entrance review

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Performance is not assigned to the door panel alone. Frame, threshold, hardware, glazing, installation interface and smart access are reviewed as one entrance system.

Construction in detail

Four details behind the complete entrance

Section overview
The images below are carried over from current China-market company material. They explain the construction intent; the approved section drawing, bill of materials and matching evidence define the quoted product.
Read the technical note
Section detail illustrating the 45-degree rebated door and frame interface
01

45° rebated interface

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A 45-degree rebated interface increases the contact path between leaf and frame and is intended to improve compression at the seals. Air, water and acoustic results depend on the complete tested assembly and installation.
PA66 GF25 insulating-strip reference from EPIN TOMCIM company material
02

PA66 GF25 thermal break

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A PA66 GF25 polyamide insulating strip separates interior and exterior metal sections. Company material states a reference thermal conductivity of approximately 0.25–0.30 W/(m·K); final section design and evidence remain configuration-specific.
Cutaway reference of a reinforced composite entrance-door leaf
03

Reinforced composite leaf

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A reinforced composite leaf coordinates the visible facing, internal metal reinforcement, insulating infill and secure hardware fixing. The layer stack is selected by model, size and intended performance rather than treated as one universal construction.
Thermal-insulation reference for a polyurethane-filled entrance assembly
04

Polyurethane insulated infill

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The reference door leaf uses polyurethane foam to fill irregular cavities and support continuous insulation. The catalogue identifies a low-conductivity polyurethane material; formulation, fire behaviour, emissions and thermal data must be supported by the current supplier and product documents.

Additional interfaces

Steel frame reference

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The published reference uses precision-formed galvanized steel as the structural frame base. Company material identifies a 2 mm sheet and a Z275 coating reference; material certificates and the applicable standard should be checked for the quoted configuration.

Frame-to-wall insulation

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Company technical material also references extruded polystyrene insulation at the frame-to-wall interface, with a stated conductivity below 0.030 W/(m·K). Suitability, fire requirements and installation detail must be resolved for the destination project.

Reference door leaf

Layered construction, documented before quotation

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The following is the reference layer stack shown in the 2026 catalogue. It is not a universal specification; the final bill of materials is confirmed by model and project.
  1. 015 mm aluminium facing
  2. 02High-density fire-resistant fibre board
  3. 03Acoustic felt
  4. 041.0 mm zinc-alloy sheet
  5. 05Steel grid frame
  6. 06Polyurethane foam
  7. 071.0 mm zinc-alloy sheet
  8. 0818 mm ENF-grade OSB

Patent references

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China patent references listed in the 2026 catalogue: ZL202420357713 and ZL202421539559.7. Scope and legal status should be confirmed from current documents when material to a project.

Performance evidence

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Published performance values apply only when supported by an identified test report and matching product configuration. Ask the sales team for thermal, acoustic, fire, weather or security documentation relevant to your destination.

Hardware integration

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The catalogue includes concealed-hinge and integrated access-control options. Load rating, opening angle, power, lock body and service access must be matched to the final door size and local requirements.

Finish approval

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Colour and surface samples are available as a starting palette. Approval should be based on a physical sample or agreed control reference because screen colour and production batches can vary.
Close-up of a concealed hinge and coordinated dark door finish

Technical enquiry

Evidence matched to your project

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