GB/T 18011-2008Natural rubber latex concentrate -- Preparation of dry films (English PDF)

Foreword

This standard is identically translated from ISO 498:1992 "Natural rubber latex

concentrate - Preparation of dry films" (English version).

For ease of use, this standard has made the following editorial changes:

- CHANGE the words "this International Standard" into "this Standard";

- DELETE the foreword of the International Standard.

- MAKE references to GB/T 8290 and GB/T 8298 in the normative references in

Chapter 2. There is no technical difference between these two standards and the

corresponding parts of ISO 498:1992.

This standard replaces GB/T 18011-1999 "Natural rubber latex concentrate -

Preparation of dry films".

The main differences between this standard and GB/T 18011-1999 are as follows:

- DELETE the ISO foreword;

- MAKE editorial revisions, in accordance with the provisions of GB/T 1.1-2000 and

GB/T 20001.4-2001.

This standard was proposed by China Petroleum and Chemical Industry Association.

This standard shall be under the jurisdiction of the Natural Rubber Subcommittee of the

National Rubber and Rubber Standardization Technical Committee.

Drafting organizations of this standard: Institute of Agricultural Products Processing of

Chinese Academy of Tropical Agricultural Sciences, Food Quality Supervision,

Inspection and Testing Center (Zhanjiang) of Ministry of Agriculture.

1 Scope

This standard specifies the method for preparing a homogeneous dry rubber film

without air bubbles, from natural rubber latex concentrate.

This standard applies to Hevea brasiliensis latex. It is not necessarily suitable for other

natural latex, compound latex, vulcanized latex, water cement, synthetic latex.

2 Normative references

The provisions in following documents become the provisions of this Standard through

reference in this Standard. For the dated references, the subsequent amendments

(excluding corrections) or revisions do not apply to this Standard; however, parties who

reach an agreement based on this Standard are encouraged to study if the latest versions

of these documents are applicable. For undated references, the latest edition of the

referenced document applies.

GB/T 8290 Natural rubber latex concentrate - Sampling (GB/T 8290-1987, eqv ISO

123:1985)

GB/T 8298 Natural rubber latex concentrate - Determination of total solids content

(GB/T 8298-2008, ISO 124:1997, MOD)

3 Equipment