GOST 9438-85 PDF

Full title and description

GOST 9438-85 — "Polyvinylbutyral adhesive film. Specifications" (Пленка поливинилбутиральная клеящая. Технические условия). The standard establishes grades, dimensions, technical requirements, test methods, packaging, marking, transportation and storage rules for adhesive polyvinylbutyral (PVB) films used in laminated (triplex) safety glass.

Abstract

This standard specifies requirements for adhesive polyvinylbutyral films produced from plasticized and non‑plasticized polyvinylbutyral (raw material per GOST 9439-85). It covers film grades and sizes, mechanical and optical properties, adhesion to glass and metals, environmental performance (frost‑ and thermo‑stability), sampling and testing procedures, and packing/marking rules intended primarily for laminated safety glass for transport and other applications.

General information

• Status: Active / in force (Действует).
• Publication date: Introduced 1 January 1986 (date of entry into force: 1986-01-01).
• Publisher: State Standard of the USSR (Gosstandart) / issued as a government/interstate standard (Государственный стандарт Союза ССР / Межгосударственный стандарт).
• ICS / categories: OKC/OCS 83.140.10 (plastics and films for industrial use); Group L27.
• Edition / version: Original 1985 adoption, entry into force 1986-01-01; supersedes GOST 9438-73 (replacing earlier edition).
• Number of pages: 27 pages (standard text / typical published length).

Scope

Applies to adhesive PVB films manufactured from plasticized and non‑plasticized polyvinylbutyral (per GOST 9439-85) and intended for production of laminated (triplex) safety glass used in vehicle glazing and other applications requiring shatter‑resistant glazing. The standard defines quality categories (first category) and the technical and test requirements needed to ensure optical clarity, adhesion, mechanical strength and environmental resistance of the PVB interlayer.

Key topics and requirements

• Grades and marking: defined film marks include A‑17, B‑Н, B‑10, B‑17, B‑17‑1 and B‑17‑0, with letter/number coding indicating production method (cast or extruded), plasticizer content and specialty types.
• Dimensions and tolerances: specified thicknesses and width ranges per grade, minimum roll lengths, and allowable thickness non‑uniformity.
• Mechanical properties: tensile strength and elongation requirements (examples: tensile strength requirements cited for several grades around 25–35 MPa and elongation values typically from ~140% to ~170% depending on grade).
• Optical properties: limits for light absorption, light transmittance (e.g., ≥85% for some grades in triplex), haze/ scattering coefficients and color saturation both before and after heat exposure.
• Adhesion and environmental resistance: adhesion to silicate glass (typical minimum ~8.0 MPa) and to polished steel (~10.0 MPa) for specified grades; frost‑resistance tests at −60 °C and thermostability tests to detect absence of delamination, bubbles and discoloration.
• Testing and sampling methods: detailed test procedures and reference methods (including cross‑references to other GOSTs used for tensile testing and measurement procedures).
• Packing, marking and storage: instructions for powdering, winding, allowable end‑cuts, labeling and packaging in boxes or factory containers with gross weight limits, plus storage/transport conditions.

Typical use and users

Primary users are manufacturers of laminated safety glass (triplex) for automotive, rail, architectural and specialty glazing, film producers and quality/control laboratories that perform incoming inspection and type testing. Secondary users include vehicle OEMs, glazing installers, suppliers of laminated glass products and regulators responsible for automotive glazing safety requirements.

Related standards

Referenced and related documents include GOST 9439-85 (polyvinylbutyral raw material), GOST 11262-80 (methods for tensile testing and related test procedures), the predecessor GOST 9438-73 (replaced), and various packaging and materials GOSTs cited in packaging and test clauses. These related standards provide raw‑material specifications, test method details and additional requirements invoked by GOST 9438-85.

Keywords

GOST 9438-85, polyvinylbutyral, PVB, adhesive film, triplex, laminated safety glass, interlayer, adhesion, thermostability, frost resistance, ГОСТ, PVB film specifications.

FAQ

Q: What is this standard?

A: GOST 9438-85 is the Soviet (State) standard titled "Polyvinylbutyral adhesive film. Specifications" that sets technical requirements, test methods and handling rules for adhesive PVB films used as interlayers in laminated safety glass.

Q: What does it cover?

A: It covers film grades and designation, sizes and tolerances, mechanical and optical properties, adhesion to glass and metals, environmental performance (frost and heat resistance), sampling and test methods, and packaging/marking/transport/storage requirements for PVB adhesive film.

Q: Who typically uses it?

A: PVB film manufacturers, laminated‑glass producers (automotive and architectural), quality control and test laboratories, component suppliers to vehicle and glass manufacturers, and compliance/regulatory bodies assessing glazing materials.

Q: Is it current or superseded?

A: The standard is listed as active (Действует) and was introduced 1 January 1986; it replaced the earlier GOST 9438-73. Records indicate its status remains in force in published Russian standards collections. Users should verify national/international updates or newer national/regional equivalents before relying on it for current regulatory compliance.

Q: Is it part of a series?

A: It is related to other polymer and testing standards (for example GOST 9439-85 for the polyvinylbutyral material and GOST 11262-80 for tensile test methods) and sits within plastics/films classification (OCS 83.140.10). It replaces an earlier edition (GOST 9438-73).

Q: What are the key keywords?

A: PVB, polyvinylbutyral, adhesive film, interlayer, laminated glass, triplex, adhesion, thermostability, ГОСТ 9438-85.