This standard specifies the product classification, safety and sanitation requirements, test methods and inspection rules for heat-resistant glassware. This standard applies to heat-resistant glassware used to hold food and beverages. GB 17762-1999 Safety and sanitation requirements for heat-resistant glassware GB17762-1999 Standard download decompression password: www.bzxz.net

GB 17762—1999
With the development of the national economy and the improvement of people's living standards, heat-resistant glassware, which was only used in laboratories in the past, has begun to be used more and more in people's daily lives. The products of this standard are glassware that directly holds food and beverages and is heated, so the safety and hygiene requirements are relatively strict. The GB/T6579—1986 "Laboratory Glass Instrument Thermal Shock Test Method" quoted in this standard is equivalent to ISO718:1982. The GB/T6582-1997 "Glass Particle Test Method and Classification in 98°C Water" quoted in this standard is equivalent to ISO719:1985, and GB/T4548--1995 "Test Method and Classification of Water Erosion Resistance of Inner Surface of Glass Container" is equivalent to ISO4802/1:1988. The hygienic requirements specified in this standard are equivalent to those specified in the Japanese heat-resistant glassware and the standards for sugar porcelain and ceramic products in my country. Therefore, the level of this standard is the general international level. This standard was proposed by the State Bureau of Light Industry.
This standard is under the jurisdiction of the National Technical Committee for Glassware Standardization. The responsible drafting unit of this standard is the Glassware Quality Supervision and Inspection Center of China Light Industry Association, and the co-drafting unit is Beijing Glassware Factory. The main drafters of this standard are Jiang Zhongao, Liu Jiajun, Li Meiying, Zheng Limei and Li Chunmei. 153
1 Scope
National Standard of the People's Republic of China
Safety and hygienic requirements ofthermotolerant glass ware
GB17762—1999
This standard specifies the product classification, safety and hygienic requirements, test methods and inspection rules of heat-resistant glassware. This standard applies to heat-resistant glassware for food and beverages. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the versions shown were valid. All standards will be revised. All parties using this standard should explore the possibility of using the latest version of the following standards. GB/T2828--1987 Batch inspection counting sampling procedures and sampling tables (applicable to continuous batch inspection) GB/T4548--1995 Test method and classification of water erosion resistance of inner surface of glass container (eqvISO4802:1988) GB/T5009.11-1996 Determination method of total toxicity in food GB/T5009.63-1996 Analysis method of hygienic standard for sugar porcelain tableware containers GB/T6579--1986 Laboratory glass Glass instrument thermal shock test method (idt ISO718: 1982) GB/T6582-1997 Glass at 98°C water resistance particle test method and classification (eqv ISO) 719: 1985) GB/T13485-1992 Food contact sugar porcelain products lead and cadmium precipitation test method GB/T15726-1995 Glass instrument internal stress test method Glass average linear thermal expansion coefficient test (eqv ISO7991: 1987) GB/T 16920-1997
QB/T2298-1997 Double line method for linear thermal expansion coefficient 3 Product classification
According to the processing technology, it is divided into two categories: blown heat-resistant glassware and pressed heat-resistant glassware. According to product quality, it is divided into superior products and qualified products. 3.1 Blown heat-resistant glassware
Including glass cooking pots, glass coffee pots, glass refrigerators and beverage glasses. 3.2 Pressed heat-resistant glasswarebzxz.net
Mainly used for glass pots, plates and other utensils for holding food in microwave ovens. 4 Technical requirements
The technical requirements for heat-resistant glassware shall comply with the provisions of Table 1. Approved by the State Administration of Quality Supervision, Inspection and Quarantine on May 28, 1999 154
Implemented on December 1, 1999
Heat shock temperature, C
GB 17762--1999
Superior quality
Blown heat-resistant glassware
Pressed heat-resistant glassware
Water resistance at 98℃
Water resistance on inner surface
Precipitation of harmful elements
Internal stress Birefringence Path difference, nm/cm
Linear thermal expansion coefficient of glass in the range of 20℃~300℃α(X10-*K-1)
HCI grade
Qualified products
As≤0.2mg/L, Sb≤0.7mg/1., Ph1.0mg/l180
3.2～3.4
1) Flat heat-resistant glassware, the depth from the lowest point inside to the horizontal plane of the overflow port is less than or equal to 25mm, is not subject to this test. 5 Test method
The test method shall be carried out in accordance with the provisions of Table 2.
Inspection items
Linear thermal expansion coefficient
Water resistance
Inner surface water resistance
Harmful element precipitation
Internal stress
Heat shock temperature
Inspection rules
6.1 Sampling plan
QB/T2298 (factory inspection)
GB/T16920 (type inspection)
GB/T6582
GB/T 4548
Test method
As ;GB/T 5009.11
Sb:GB/T5009.63.Pb:GB/T13485
Sample: Cleaned according to GB/T4548, filled with 4% (V/V) acetic acid, boiled at 121℃ for 2hGB/T15726
GB/T 6579
Performed according to the one-time sampling plan specified in GB/T2828. 6.2 Factory inspection
6.2.1 Batch
The factory takes the production of each shift as a batch. When delivering to users, the same variety and specification delivered at the same time are a batch. 6.2.2 Inspection level
According to the special inspection level S-3.
6.2.3 Inspection items and requirements
When the product leaves the factory, it shall be inspected according to the items specified in Table 3. Only qualified products can leave the factory, and the certificate of conformity shall be attached when leaving the factory. 155
Inspection items
Linear thermal expansion coefficient
98℃ water resistance
Harmful element precipitation
Inner surface water resistance
Internal stress
Heat shock resistance
6.3 Type inspection
6.3.1 Inspection items and requirements
GB17762—1999
Qualified quality level
Factory inspection
Type inspection
The items and requirements for type inspection are all the items required in Table 3. When the test method in Chapter 5 is used for testing, they should meet the requirements. 6.3.2 Type inspection should be carried out in any of the following cases: a) new product trial design and appraisal;
b) after formal production, if there are major changes in structure, materials, and processes that may affect product performance; c) during normal production, periodic inspection should be carried out regularly or after a certain amount of production has been accumulated; d) when there is a significant difference between the factory inspection result and the last type inspection result. 6.3.3 Sampling and batching rules
All samples should be taken from qualified products, and sampling shall be carried out in accordance with 6.1. 6.4 Judgment rules
Inspect according to the type inspection items. If all items meet the requirements, the batch of products is judged to be qualified. 156
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