Valid

GB/T 33319-2025Plastics - Polyethylene (PE) compounds for breathable film (English PDF)

塑料　聚乙烯（PE）透气膜专用料

Preview PDF

This is a limited preview

Buy now to download the full PDF (18 pages)

Need quotation for your management?

Get a formal quotation for GB/T 33319-2025 in 30 minutes.

Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 2, 2025

Implementation date

July 1, 2026

Scope

GB/T 33319-2025 is the English-translated version of 塑料　聚乙烯（PE）透气膜专用料.

GB/T 33319-2025 covers the polyethylene compounds used to make breathable film, produced from polyethylene resin with mineral fillers and other additives by melt extrusion granulation.

It sets a naming system in two character groups: the resin code PE, then the product code B followed by the ash content code, the melt flow rate code and, for hygiene products, the application code S. It also specifies the requirements, the inspection rules, the marking and accompanying documents and the packaging, transportation and storage, and describes the test methods.

It defines breathable film and the filter pressure difference value, and cites GB/T 1033.1, GB/T 1037, GB/T 1040.2, GB 15979, HG/T 4768.5 and SH/T 1541.1 among others.

It replaces GB/T 33319-2016, was issued on 2 December 2025 and has applied since 1 July 2026.

Found what you need?

Document preview — GB/T 33319-2025

National Standard of the People's Republic of China

ICS: 83.080.20
Classification: G 32
Replacing: GB/T 33319-2016

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword3
1 Scope5
2 Normative references5
3 Terms and definitions6
4 Naming7
5 Requirements8
6 Test methods11
7 Inspection rules13
8 Marking and accompanying documents14
9 Packaging, transportation and storage15

1 Scope

This document specifies the naming, requirements, inspection rules, marking and accompanying documents, packaging, transportation and storage of special polyethylene (PE) compounds for breathable film, and describes the corresponding test methods.

This document applies to special polyethylene compounds for breathable film made from polyethylene resin as the matrix, with the addition of mineral fillers and other additives, through melt extrusion granulation.

2 Normative references

The provisions of the following documents constitute the essential clauses of this document through normative references in this text. Among them, for any dated reference, only the version corresponding to that date applies to this document; for any undated reference, the latest version (including all amendments) applies to this document.

GB/T 1033.1 Plastics - Methods for determining the density of non-cellular plastics - Part 1: Immersion method, liquid pycnometer method and titration method

GB/T 1037 Test method for water vapor transmission of plastic film and sheet - Desiccant method and water method

GB/T 1040.2 Plastics - Determination of tensile properties - Part 2: Test conditions for moulding and extrusion plastics

GB/T 1844.1 Plastics - Symbols and abbreviated terms - Part 1: Basic polymers and their special characteristics

GB/T 1845.2 Plastics - Polyethylene (PE) moulding and extrusion materials - Part 2: Preparation of test specimens and determination of properties

GB/T 2035 Plastics - Vocabulary

GB/T 2547 Plastic resins - Sampling

GB/T 2918 Plastics - Standard atmospheres for conditioning and testing

GB/T 3682.1 Plastics - Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics - Part 1: Standard method

GB/T 6284 Chemical products for industrial use - General method for determination of water content - The loss of mass on drying method

GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values

GB/T 9345.1 Plastics - Determination of ash - Part 1: General methods

GB 15979 Hygienic requirements for disposable sanitary products

GB/T 17037.1 Plastics - Injection moulding of test specimens of thermoplastic materials - Part 1: General principles, and moulding of multipurpose and bar test specimens

GB/T 31331-2014 Requirement and identification for environmental protection of modified plastics

HG/T 4768.5 Pigments and extenders - Assessment of dispersibility in plastics - Part 5: Determination of colouring materials dispersion by heating and melting

SH/T 1541.1 Plastic - Test method for appearance of granules - Part 1: Visual method

3 Terms and definitions

The terms and definitions defined in GB/T 2035 and the following terms and definitions apply to this document.

3.1 Breathable film

After being cast or blown into film, the film is stretched at a certain temperature to form a certain number of micropores inside, thus creating a breathable function.

3.2 Filter pressure difference value

deltaP The difference between the pressure at the end point of the filter pressure test and the pressure 15 minutes prior.

4 Naming

4.1 General rules

The naming of special polyethylene compounds for breathable film consists of two character-groups:

-- Character group 1.Resin code (see 4.2);

-- Character group 2.Product code of special compounds for breathable film, characteristic performance code and application code (see 4.3).

Character groups are separated by a comma.

4.2 Character group 1

According to GB/T 1844.1, the code for polyethylene resin is "PE". […]

4.3 Character group 2

4.3.1 General rules

In this character group, letter codes and number codes are used. Position 1 is the product code, with the letter "B" indicating the special polyethylene compound for the breathable film; positions 2 and 3 are characteristic performance codes, separated by a hyphen "-", representing ash content (see 4.3.2) and melt flow rate (see 4.3.3) respectively; position 4 is the application code, with the letter "S" indicating use in hygiene products, and without "S" indicating use in other products.

Producers of special polyethylene compounds for breathable film shall name the materials. If individual test values fall on the other side of the limit value or boundary due to permissible limits in the production process, the naming shall not be affected.

4.3.2 Ash content

The ash content is divided into four ranges based on the nominal value. Each range is represented by a code consisting of two numbers and shall comply with the provisions of Table 1. […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 18 pages — is available in the English PDF.

Referenced standards

Normative references

SH/T 1541.1

Editions of GB/T 33319

Edition	Title	Revision	Status
GB/T 33319-2025	Plastics - Polyethylene compounds for breathable film	current edition	Current
GB/T 33319-2016	Plastics -- Polyethylene compounds for breathable film	previous edition	In force

This page sells the current edition, GB/T 33319-2025. Earlier editions are listed for reference only.

How to Download GB/T 33319-2025

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.