China's Offset Resin Ink Industry Standard QB/T 1866-93: Classification, Specifications and Inspection Rules Explained

People's Republic of China Industry Standard · Offset Resin Ink (QB/T 1866-93)

1 Subject Matter and Scope of Application

This document sets out explicit rules on how offset resin ink is classified, the technical indices it must meet, the test procedures used to verify them, the acceptance rules, and the requirements for product identification, packaging, transportation and storage. Every offset resin ink intended for single-, double- or multi-colour offset presses falls within its scope; such inks are chiefly used to print images, trademarks and similar matter on offset paper and on various other grades of printing paper.

2 Normative References

ZBA 17005 Classification, nomenclature and types of printing ink products

GB/T 14624.1 Test method for ink colour

GB/T14624.1 Test method for ink tinting strength

QB 559 Test method for ink fineness

GB/T14624.3 Test method for ink flowability

GB/T14624.4 Test method for ink film drying

GB/T14624.5 Test method for ink tack

QB 570 Test method for ink setting speed (A) (B)

QB 577 Test method for the slope, intercept and flow value (spread diameter) of the ink characteristic line

3 Product Classification

By colour, the product is divided into seven types — white, medium yellow, green, sky blue, golden red, magenta and black — and their type designations conform to the requirements of ZBA 17005. See Table 1 and Table 2.

4 Technical Requirements

4.1 All technical indices of this product shall comply with what Table 1 stipulates. Table 1

P01 101

Offset resin white ink

95-110

P02 232

Offset resin medium yellow ink

P02 305

Offset resin green ink

P02 424

Offset resin sky blue ink

P02 623

Offset resin golden red ink

P02 655

Offset resin magenta ink

P02 802

Offset resin black ink

4.2 All performance requirements of this product shall comply with what Table 2 stipulates. Table 2

Setting speed mim

P01 101

Offset resin white ink

P02 232

Offset resin medium yellow ink

P02 305

Offset resin green ink

P02 424

Offset resin sky blue ink

P02 623

Offset resin golden red ink

P02 655

Offset resin magenta ink

P02 802

Offset resin black ink

5 Test Methods

5.1 Colour is tested in accordance with GB/T14624.1.

5.2 Tinting strength is tested in accordance with GB/T14624.2.

5.3 Fineness is tested in accordance with QB559.

5.4 Flowability is tested in accordance with GB/T14624.3.

5.5 Film drying is tested in accordance with GB/T14624.4.

5.6 Tack is tested in accordance with GB/T14624.5.

5.7 Setting speed is tested in accordance with QB570.

5.8 Flow value is tested in accordance with QB577.

6 Inspection Rules

6.1 Factory inspection 6.1.1 Before a product leaves the plant, the manufacturer's inspection department must examine it, and it may only be released once it passes and carries a certificate of conformity. 6.1.2 The items covered by factory inspection are colour, fineness, flowability and tinting strength.

6.2 Type inspection 6.2.1 Type inspection shall be carried out whenever any of the following circumstances arises. a. Type approval during trial production of a new product, or when an existing product is transferred to another factory for manufacture;

b. After regular production has begun, when the structure, materials or process undergo relatively major changes that may affect product performance;

c. During normal production, once every year;

d. When production resumes after the product has been out of production for a long period;

e. When a national quality supervision body requests that type inspection be carried out.

6.3 Products of the same colour made in the same production period form one lot; the number of samples drawn from each lot shall be no less than (n/2)1/2, where n is the total number of drums (cans) in that lot, and no less than 20 g shall be sampled from each drum (can), with the samples kept clean and sealed.

6.4 If an item fails inspection, fresh samples may be drawn from the same lot for re-inspection, and the re-inspection result shall prevail; if an item still fails, the lot shall be judged non-conforming.

6.5 Should the supplier and the buyer disagree over inspection results and fail to settle the matter through consultation, arbitration inspection may be conducted by a product quality supervision and inspection body.

7 Marking, Packaging, Transportation and Storage

7.1 Offset resin ink is packaged in iron boxes or iron drums, and the iron boxes are then placed inside outer packaging cartons.

7.2 The exterior of the iron boxes or iron drums shall be labelled or printed with the trademark, manufacturer, product name, type, product standard number, quantity, weight, batch number, date of manufacture and the marking “Do not turn upside down”.

7.4 Provided the packaging requirements of 7.1 are met, the product may be transported by means of transport such as vehicles, ships and aircraft.

7.5 During transportation and handling, the product shall not be thrown, dropped or knocked against anything, so as to prevent damage to the packaging and spillage of the ink.

7.6 The product shall not be stored in the open air; the warehouse must be dry and ventilated, protected against moisture and kept away from fire sources.

7.7 Under the storage conditions specified in 7.6, the product has a valid storage period of two years from the date of manufacture.

This standard was proposed by the Quality Standards Department of the Ministry of Light Industry.

This standard is under the jurisdiction of the National Ink Standardization Centre.

Drafting organisation of this standard: Shanghai Ink Factory.

Principal drafter of this standard: Jin Zhiwu.

From the date of implementation of this standard, the former Ministry of Light Industry standard QB555-83 “Offset Resin Ink” shall be repealed.

——This article is reprinted from China Packaging Network (pack.cn), original link: http://news.pack.cn/show-362284.html