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GB/T8947-1998 composite plastic woven bag national standards (a)

GB/T8947-1998 instead of GB8947-88

Composite plastic woven bag

Composite plastic woven sack Foreword

This standard is GB 8947-88 "composite plastic bags," the revised edition. This criterion is based on GB/T1.1-1993 "Standardization guidelines first unit: the standard rules for drafting and presentation - Part 1: basic requirements of standard written" and GB/T1.3-87 "Guidelines for the standardization of product standards written rule "at the request of the original scope of the standard, technical requirements, test methods have been revised to make our products according to type, quality assessment unit area, to make it more series. In the technical requirements, the increased health properties and packaging temperature indicator and test methods, compared with the original standard, the scope of this standard is more reasonable, more indicators of technical requirements, test methods more scientific.

From the effective date of this standard, and GB8947-88.
Appendix A of this standard as a standard appendix.
The standard proposed by China Light Industry Association.
The standard plastic products by the National Standardization Technical Committee.
Drafted by: Weaving Factory Changzhou Plastics Co. joint venture.
The main drafters: Zhengxing Zhen, Xu Yajun.
Implementation of approved 1999-05-01 1998-09-29


1 Scope
This standard specifies the classification of composite plastic woven products, technical requirements, test methods, inspection rules and signs, packaging, transportation, storage requirements.
This standard applies to polypropylene, polyethylene resin as the main raw material, extrusion, stretching into the flat, then by woven plastic woven cloth (hereinafter referred to as cloth) as a substrate by casting method, made of composite for packaging powdered or granular solid materials and flexible composite plastic woven goods (cloth / film composite as ID cards, cloth / film / paper composite to triple, by sewing or adhesive and sewn into the bags were known as the triple combo bags and bags) (hereinafter referred to as bags).

2 References

The following standards contain provisions which, through reference in this standard, constitute provisions of the standard. This publication, the editions indicated were valid. All standards will be revised, the parties should use the standard criteria of the latest version of the following possibilities.
GB/T1039-92 plastic mechanical properties of test Method 8000
GB/T1040-92 plastic tensile test method
GB/T2828-87 batch inspection count sampling procedures and sample forms (for continuous batch of checks)
GB2918-82 plastic sample status environmental regulation and testing standards
GB/T4857.5-92 packaging transport package drop test method
GB/T5009.60-1996 food packaging polyethylene, polystyrene, polypropylene moldings health standard analytical methods
GB/T8808-88 peel soft composite plastic materials, test methods
GB9687-88 molded polyethylene food packaging hygiene standards
GB9688-88 molded polypropylene food packaging hygiene standards

3 Products

3.1 Variety
3.1.1 constitute the principal material into polypropylene combo bags, polypropylene triple bag, polyethylene bags combo, triple polyethylene bags.
3.1.2 by the end of sewing methods are divided into sewing bag, sewing the bottom edge of bag, inserted pockets, glued and sewn bags (see Figure 1).

a) bottom seam bags b) slit edge and bottom bags c) insert pockets d) stick and sewing bags
a-b-effective width of the effective length
Figure 1
3.2 Model
Model and allows the load quality should meet the requirements in Table 1.
Table 1

Type TA type A type B type C type
Allow loading of quality, kg 10 ~ 20 21 ~ 30 31 ~ 50 51 ~ 60


3.3 Specifications
3.3.1 Effective width divided by bags 450,500,550,600,650,700 mm.
Where the effective width does not meet the above specifications, agreed upon by both parties.
3.3.2 The effective length of the bag determined through consultation by both parties.

4 technical requirements
4.1 Appearance quality
Appearance quality should meet the requirements in Table 2.
Table 2

Technical requirements of the project
100mm thin block interval, the warp and weft yarn not more than 2 missing off
Fold width 3mm, length 100mm, not more than three fold
Clean the oil or other less obvious causes 100mm2 stain more than three
Does not allow the suture needle suture removal, disconnection, the phenomenon is not sewn volume discount
Composite composite width does not allow enough clear off, holes or lumps

4.2 Substrate Size
Bags of double-sided composite cylinder, the bilateral all should be greater than the substrate 5mm.
4.3 Tolerance
Bags tolerances shall meet requirements in Table 3.
Table 3

Project Tolerance
Length, mm +15 -10
Width, mm +15 -10
Bags per unit area, g/m2 +8 -7
Composite thickness, mm +0.005 -0.005

4.4 Physical properties
Physical properties should be consistent with Table 4.
Table 4

Type A-Type Indicators Project TA> B Type C
Fabric mass per unit area, g/m2 not less than 658,090,105
Tensile load
Not less than by the 450 550 650 800
Weft 450 550 650 800
Sticky and to 300 350 400 400
Seam to 250 300 350 400
Peel strength, N/30mm not less than 3.0
Note: Special requirements determined through consultation by both parties.

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