This standard specifies the product specifications, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of polyolefin heat shrinkable films. This standard applies to films with a PP/LLDPE/PP structure made by three-layer co-extrusion using copolymerized polypropylene (PP) and linear low-density polyethylene (LLDPE) resins as the main raw materials. GB/T 19787-2005 Packaging material polyolefin heat shrinkable film GB/T19787-2005 Standard download decompression password: www.bzxz.net
This standard specifies the product specifications, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of polyolefin heat shrinkable films. This standard applies to films with a PP/LLDPE/PP structure made by three-layer co-extrusion using copolymerized polypropylene (PP) and linear low-density polyethylene (LLDPE) resins as the main raw materials.

ICS 55.040
National Standard of the People's Republic of China
GB/T19787-2005
Packaging Materials
Polyolefin Heat Shrinkable Film
Heat-shrinkablepolyelefine films fer packaging mattrials2005-05-25Published
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of ChinaStandardization Administration of China
2005-11-01Implementation
This standard is submitted by China Packaging Company in the standardNational Technical Committee for Packaging Standardization. GB/19/87—2005
The standard was jointly drafted by the National Packaging Product Quality Supervision and Inspection Center (Jinan) and Shandong Yiri Packaging Materials Co., Ltd. The main drafters of the standard are Xiaxingjiao, Hujiayi, Erweishan and Shishendong. 1 Scope
Packaging materials Polyolefin heat shrinkable film
GB/T197$/-2005
This standard defines the product specifications, technical requirements, test methods, inspection rules and labels of polyolefin heat shrinkable film (except for film) (hereinafter referred to as "film"); packaging, transportation and storage
This standard is applicable to films with PP/ITDPF/PP structure made of other main raw materials such as polypropylene (PP) and low-temperature resistant polyvinyl chloride (PF). 2 Normative references
The clauses in the following documents become the confirmed clauses of this standard through reference in this standard. For all referenced documents with a date, their subsequent amendments (excluding the contents of auxiliary channels) or revised versions are not applicable to this standard. However, the parties who reach an agreement on the standards can use the latest versions of these documents after research. For all undated referenced documents, their latest versions are applicable to this standard. G3/T241--198V Plastic light transmittance and virtual test method (eqVASTM1003:1557) G/T28.1-2002/TS28541:19Sg counting sample control test procedure Part 1: Detailed inspection plan for receiving quality (AQ1.)
B/T2318-1!8 Plastic specimen shape adjustment and test standard (i11SU291:1977) T/09.n-1SSG actual product installation Polyethylene, whole benzene, olefins content analysis method 13/T6572-2001 Material film thickness determination method (I1304593: 1993) 13557-2001 Material film length and width determination (S04592: 1592) B988 Polyethylene for food packaging material health standard / 1000-158% plastic film and sheet thickness coefficient determination method (ID1S08395.198 ）G1302211 Plastic film tensile properties test (gS111) QB/T1130-11 Plastic performance test (neJTSK8732:1987.7.6) QH/T235R-1998 Plastic film assembly heat seal strength test method (gIS233,1005) 3 Product specifications
3.1 Specifications
Width: 50mm--2400mm, 2zs30x. Special parts. Determined by both supply and demand 3.2 Film joints
Thin film joints are not allowed to be changed. The number of joints shall not exceed 2. The length of the thin ticket section shall not be less than 10m. 4.1 Material deviation Product thickness deviation: 25mr 4.2 Thickness deviation See Table 1 for the original limit: See Table 2 for the standard thickness deviation. GR/T 19787--2005 12--18 15--24 25--3# 12--Special requirements for product appearance Table 3. 3. Folding, transfer, recording, air bubbles Physical and mechanical properties Product physical and mechanical properties 1. 1. 2. 3. 4. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 49. 51.
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with, price the same N
hot collection refers to the car
hot expansion N
table? Thickness limit deviation
Strong limit light
First-class product
Average thickness deviation
Imperial and original image difference
First-class product
Table 3 Appearance quality requirements
Superior product
Allowed to be negotiated or unified
Not allowed
Not allowed
Not allowed
Physical and mechanical performance requirements
Specification requirements
.2 w:u*~[b ±u.
19 ~19 E
20 μm~-21 μrn
Unit3 meter
Qualified product
Unit is micron
Qualified product
Qualified product
am-.3 pm
4.5 Sanitary performance
The sanitary performance indicators of the film directly used for packaging products, medicines, etc. shall meet the safety requirements. 5 Test method
5.1 Testing method
GB/T 19787—2005
Remove the shrinkage surface layer, and make a thin film along the surface. The collection area is 15 meters. The main physical, mechanical properties and sanitary performance test 5.2 Sample state adjustment and test standard environment In the standard environment of G3/T2S1% 23: =2 scan rate% =1, the single sheet is adjusted for not less than 4h, and the test is carried out under this environmental condition. 5.3 Thickness
It shall be carried out according to the provisions of GB/T 6672: the minimum value of the measuring instrument shall not be more than 0.1m, the maximum value shall be used to calculate the limit value, and the average thickness difference shall be the difference between the average thickness and the nominal thickness. 5.4 Width
According to GB/TGG73.
5.5 Appearance
Test under 4W fluorescent lamp or white light, 5.6 Tensile strength and elongation at break according to G/T1022, 1 meter long strip specimen, test length 152mm, width 1m+1 clamp spacing 1coam. Tensile pressure is 250mm/mm=50mm/win. Take the average compensation and keep the whole. 5.7 Right angle load
According to Q15/1180. 5. Heat shrinkage function
5. 8. 1 Test device
The test device includes a constant temperature protection, a liquid heat transfer medium test frame, and a temperature bath for containing liquid heat transfer medium: its volume should be large enough to accommodate the sample. The selection of micro-flow should be based on the principle of no influence on the sample. The sample frame should be lightly embedded with a network, and its size should be slightly larger than that of the sample. The distance between the two networks is 1mm, and it should not affect the mouth of the sample. 5.8.2 Test samples
Take 3 test pieces of 1umm1 (center mm=01mm), draw a line on the vertical direction, and mark the direction upward: mark the direction. 5.3.3 Test steps
Put the test piece on the rack, put it in a constant humidity medium of 1202, and then stop it. Flow into the spare room temperature water to wait for the test to cool down. Then take the effective amount and mark the size, accurate to 3.5. 5.5.4 Calculate the shear
according to formula (1):
T -- (E i.3/.u
Sand collection rolling zero.%
I. One: The length of the dyed product should be selected according to your standard, the single-sex hair is meter (mm): above --- the standard length of the sample after heating, the unit is competitive meter (mmm, the test result is expressed as the arithmetic mean of 3 test results, with one decimal place guaranteed, 5.9 consumption strength
, etc., the horizontal bar product is heat-sealed, the heat-sealing temperature is 14! ±: , force is 0.1RMP, time is 1% according to QB/2% standard, and the strength test is carried out on the hot stage. The strip type is adopted, the sample width is 1=m3.1mm, and the pulling speed is 25/mi\-5mm/mit. The result is an average value, and one decimal is used. GB/T19787-2005
5.10 Dynamic coefficient
I am carried out according to G/1100.
5. 11 Degree
I am carried out according to GB/T24IU
5. 12 Hygienic performance
I am carried out according to E1009.60.
6 Inspection rules
6.1 Batch and sampling
6.1.1 group of batches
source membrane acceptance is based on batch average unit: the raw materials of one batch of bows, the products of the same appearance produced by one process are not more than 31*-
6. 1. 2 Sampling
resistance to appearance G3/T 22%.1 normal inspection and adjustment sampling plan, the inspection is for the average quality limit (AQL) of step 6,5. According to the provisions of Table 5, sampling and inspection are carried out. Physical and mechanical properties and Weifeng performance Le day, take any filter from each batch of products for inspection Table 5 Specification and appearance inspection sampling and judgment plan Sample most
6.2 Inspection
26---50
5t-~90
01-~150
151~260
501-1200
- 2J1.~3 2u0
2C1-~ 12 00
Results
Appropriate Quality Level (AQL)
Results A
Results
Factory Inspection Daily 4.11.: And the tensile strength in Table 4, elongation at break directly under full load, heat absorption rate 6.3 Type inspection
Type or age inspection technical requirements of the enterprise. Type inspection shall be carried out at least once a year, and type inspection shall also be carried out in one of the following circumstances:) When the original inspection requirements are changed during production, which may affect the product quality) When production is stopped for half a year and the current production is resumed
) When the factory inspection results are significantly different from the previous type inspection results d) When the quality inspection or clinical inspection machine is required to meet the requirements of the reverse type inspection. 6.4 Judgment rules
CB/I19787—2005
6.4.1 If the visual inspection and size inspection results of the film and the size of the specification do not meet the requirements of this standard in any item, the product is judged to be unqualified. The qualified batch is judged according to Table 5.
6.4.2 If the mechanical performance test results show that there are unqualified items, double samples should be taken from the original batch of products for re-testing. If the re-test is still unqualified, the batch of products is judged to be unqualified: 6.4.3 If one of the performance indicators does not meet the requirements, the batch of products is unqualified. 6.4.4 When the products are judged to be qualified in 6.1.1, 6.4.2, 6.7.8, the batch of products is judged to be qualified. 7.1 Marking
The outer packaging of the film should have a clear indication of the product name, test number, specification net weight, production date and batch number, inspection point, production instructions and instructions, as well as "anti-impact, anti-slip, anti-impact" and other signs. 7.2 Packaging
Each film should be protected by a plastic film and a fire board. The material should be tight and the color should be the same. Special packaging should be determined by both parties.
7.3 Transportation
Be careful during transportation to prevent damage by machine and exposure to sunlight and rain. 4 The film should be stored in a well-kept, ventilated warehouse, properly stacked, at least 10 meters away from the source, and not exposed to strong light. The storage environment should not be higher than 30 degrees. The storage should not exceed half a year from the date of production. When the storage period is over, the product can be inspected according to this standard. If the quality meets the requirements, it can still be used for 5 months.
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