Some standard content:
1CS83.100
Registration No.: 109462002
Chemical Industry Standard of the People's Republic of China
HG/T36982002
EVA hot-melt adhesives
EVA hot-melt adhesives
2002-09-28 Issued
2003-06-01 Implementation
The State Economic and Trade Commission of the People's Republic of China Issued Foreword
I[GT 3698—2002
This standard is formulated based on the technical requirements for new VA hot-melt adhesives for non-woven binding, packaging, household appliances, etc. and the actual situation in my country.
This standard was originally issued by the Policy and Regulations Department of the State Administration of Petroleum and Chemical Industry. This standard is jointly prepared by the National Adhesive Standardization Technical Committee and the National Adhesive Standardization Technical Committee. The originating units of this standard are: Shanghai Adhesive Products Research Institute, Lianyungang Chengyi Adhesive Co., Ltd., Beijing Wensheng Printing Materials Co., Ltd. The main drafters of this standard are: Ji Jiushu, Chen Kuanyu, Du Hongjian, Xu Ning. This standard is entrusted to the National Adhesive Standardization Technical Committee for the preparation of ethylene. 1 Scope EVA hot melt adhesive HG/T369B—2002 This standard specifies the ethylene-vinyl acetate copolymer This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of FVA hot melt adhesives made by melting and mixing EVA resins and tackifying resins, additives and other matching materials. This standard specifies the EVA hot melt adhesives used in wireless binding, household appliances, packaging, pipe shears and other applications. 2 Normative references || tt || The clauses in the following documents become the clauses of this standard through reference in this standard. The references are valid from the date of the reference, and their subsequent amendments (excluding errata) or revisions The latest versions and unpublished versions are not used for this standard. However, all parties to the agreement of this standard are encouraged to study whether the latest versions of these documents can be used. For any referenced documents that are not out of date, the latest versions shall apply to this standard. GB/T52A-1998 Determination of tensile stress-strain properties of vulcanized rubber or hot-pressed rubber B/T531-1999 Test method for long-term use of rubber G/T1682-1694 Determination of temperature brittleness of vulcanized rubber Single specimen method GB/T5673 Sampling list of chemical products
B/ T567U General rules for the preparation of solid chemical products
GB/T15332—1994 Determination of melting point of hot-start adhesive softenerGE/T16998—1997
Qualitative determination of hot-baked adhesive
Environmental protection method
Regulations on packaging, marking, transportation and storage of adhesive productsHGT307:
H/T366019SS Determination of melt adhesion of hot-baked adhesive3 Technical requirements
Product performance shall comply with the requirements of Table 1,
Table! Product performance index
No war equipment
Flash melting point (1gnt:), Pa
Softening point,
Degree of tension, MPa
Address breaking rate.56
Thermal stability: 18m×2%6
Fat blood quality, C
Household appliances
White or light single firmware
N, ±0. 4
No Langbao turn black Lianchan product cattle
. --95
Packaging effect tablets
Anti-liquidation
N, .N, is the standard value for performance, standard N, value is .Pa·x*-5.5,,, value is 2~.3Pa·, 4 Test method
4.1 Appearance
H(:/T3698—2002
Self-test,
4.2 Determination of melt viscosity
According to the provisions of HG/T3G60A, test temperature (1 Hn 1C), 4.3 Determination of softening point
According to GB/T15332:
4.4 Determination of thermal stability
According to GB/T169U8. www.bzxz.net
4.5 Determination of tensile strength and torsion elongation ratio shall be carried out in accordance with T/T525. The test specimens shall be pressed and I-type specimens. The tensile speed of the pull-off test machine is (50-50) mm/min
4.6 Determination of hardness | |tt||Perform according to GR/T531.
4.7 Determination of brittleness
Perform according to GR/T16E2.
5 Inspection and testing
5.1 Inspection classification
Strict product testing Products can be shipped after passing the inspection of this standard by the enterprise's quality inspection department, and a product certificate will be issued. Products are divided into two types of factory inspection and type inspection. 5.2 Factory inspection
Factory inspection items:
Comparative melting point
Tensile strength:
Length of wear:
Thin bottom.
5.3 Type inspection
Type inspection items are all items specified in Chapter 1. Type inspection should be carried out in any of the following circumstances: When the production is in progress, or the equipment and process have changed significantly, and the quality is affected, the production is stopped for more than half a year, and the production is stopped.
When the national pressure industry supervision agency or the regular customer makes a request, 5. 4. Samples and age The products produced by each kettle are regarded as one batch. Note: The same model of several products can also be mixed and mixed into a batch. When mixed, the melting point index of the products should meet the standard requirements. 5.4.2 Sampling method The number of samples shall be determined in Table 2 of G/T678. When the number of units of the total substance is greater than 500, the number of units shall be tripled by the cube root of the total number of units. (N is the odd number of the total number. If there is a decimal, it shall be rounded up. The sampling method shall be selected in accordance with the provisions of GB/T678. Place the sample bag flat and place it in the sampler from the edge of the sample mouth to three quarters of the diagonal. The sample should be collected from each batch. The cost of each sample should be less than 1.k.
Combine the samples taken from the seller together, and after coordination, divide them into 0.1% and 0.2% bottles, (36)
HGT3698—2002
polyethylene bottles or plastic bottles (bags). The label shall indicate the manufacturer's name, product name, model, batch number, sampling month and name of the sampler.
During the inspection, if any index does not meet the requirements of the standard, the samples shall be collected from the two packaging bags for re-inspection. If any index does not meet the requirements of this standard in the inspection results, the product shall be judged as unqualified. 6 Marking, packaging, transportation and disposal
shall be carried out in accordance with HG/T3)7G: hot melt adhesives shall be packaged in plastic with a net weight of 25kg per bag (or in accordance with the provisions of the agreement). The following signs should be placed on the outer packaging: product name, mark, trademark, standard number, net content, name and address of the local product manufacturer: During transportation, the product should be protected from testing, high temperature and sunlight, and should be lightly packed or pulled to prevent the outer packaging from being damaged.
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