GB/T 17858.3-2020. Packaging sacks-Vocabulary and types-Part 3: Woven sacks.
1 Scope
This part of GB/T 17858 defines the general terms of woven sacks, as well as the terms of types, construction details, materials, parts and directions.
GB/T 17858.3 is applicable to single-layer or multi-layer packaging bags made of woven fabrics of various materials or woven fabrics processed with other tough materials. This part does not apply to retail commodity packaging bags and container bags.
2 General terms
2.1
Woven sack
A packaging container made of woven fabric or flat woven fabric bag tube with at least one end closed.
Note: In order to make the woven bag achieve the performance required for the filling and circulation of goods, the woven fabric or flat woven fabric bag tube can be compounded with other tough materials.
2.2
ply
A piece of woven fabric or other tough material constituting the bag wall, or a composite material consisting of these materials.
2.3
gusset
edgefold
M-shaped edge
The part of the longitudinal edge of the bag tube or bag that is folded inwards.
2.4
tube
A layer in the shape of a flat tube cut into a specified length.
Note: A tube can be one or more layers.
2.4.1
flat tube
A tube consisting only of flat tubes without folded parts on the longitudinal edges.
2.4.2
gusseted tube
A tube with folded parts on the longitudinal edges.
2.5
sewing ; stitching
join together with stitching thread.
2.6
adhesive bonding
join together with adhesive.
2.7
heat sealing; welding
melt the related parts of several layers of packaging materials together under certain temperature and pressure for a certain period of time.
2.8
overlap
the overlapping part of the bag tube or layer.
2.8.1
longitudinal overlap
the overlapping part of the longitudinal edges of each layer.
2.8.2
bottom overlap
the overlapping part of the transverse edges of the bag tube after the bottom is formed.
2.9
Valve
A reserved opening for filling the contents and preventing the contents from flowing back after filling.
Note: The valve is usually located at a corner of the bag.
2.10
Valve sleeve
A bushing made of woven fabric, other tough materials or a composite material of these materials, added to the valve to improve its performance.
This standard specifies the general terms for woven bags, as well as the terms for bag type, construction details, materials, location and direction. This standard applies to single-layer or multi-layer packaging bags made of woven fabrics of various materials or woven fabrics processed with other tough materials. This standard does not apply to retail commodity packaging bags and container bags.

ICS55.080
National Standard of the People's Republic of China
GB/T17858.3—2020
Packaging sacks
Terms and types
Part 3: Woven sacks
Packaging sacks-Vocabulary and types-Part 3: Woven sacks2020-06-02Issued
State Administration for Market Regulation
National Administration of Standardization
2020-06-02Implementation
GB/T17858.3—2020
General terms
Construction details
Location and direction
Chinese phonetic index
English corresponding word index
GB/T1 7858 "Packaging Bags
Terms and Types" is divided into three parts:
Part 1: Paper Bags;
Part 2: Thermoplastic Soft Film Bags;-Part 3: Woven Bags
This part is Part 3 of GB/T17858
This part was drafted in accordance with the rules given in GB/T1.1-2009. This part was proposed and managed by the National Technical Committee for Packaging Standardization (SAC/TC49). GB/T17858.3-2020
The drafting units of this part are: Building Materials Industry Technical Supervision Research Center, Fujian Hongxiang Technology Co., Ltd., Anhui Jinxiangchi Plastic Industry Co., Ltd., Hunan Anfu Environmental Protection Technology Co., Ltd., and Guangdong Yingtong Paper Co., Ltd. The main drafters of this part are: Gan Xiangchen, Zhao Tingting, Chen Meikai, Jiang Rongli, Wang Ruyuan, Li Haisheng, Shi Zhihua, and Chen Bin. 1
1 Scope
Terms and types of packaging bags
Part 3: Woven bags
GB/T17858.3—2020
This part of GB/T17858 defines the general terms of woven bags, as well as the types, construction details, materials, locations and directions. This part applies to single-layer or multi-layer packaging bags made of woven fabrics of various materials or woven fabrics and other tough materials. This part does not apply to retail commodity packaging bags and container bags. 2 General terms
Woven bags
wovensack
A packaging container made of woven fabric or flat woven fabric bag tube with at least one end closed. Note: In order to make the woven bag achieve the performance required for the filling and circulation of goods, the woven fabric or flat woven fabric bag tube can be composited with other tough materials. 2.2
Ply
A piece of woven fabric or other tough material that constitutes the bag wall, or a composite material composed of these materials. iiKae
gusset
edgefold
M-shapeedge
The part of the bag tube or bag with the longitudinal edge folded inwards. 2.4
A layer of a flat tube cut into a specified length. Note: The bag tube can be one or more layers.
Flat tube
flattube
A bag tube consisting of a flat tube only without a folded in part on the longitudinal edge. 2.4.2
Gusseted tube
A bag tube with a folded inward part on the longitudinal edge. 2.5
sewing;stitching
Joined together with sewing thread.
adhesivebonding
Joined together with adhesive.
GB/T17858.3—2020
Heat sealing
Heat sealing: welding
Under certain temperature and pressure, after a certain period of time, the relevant parts of several layers of packaging materials are melted together. 2.8
overlap
The overlapping part of the bag tube or layer.
Longitudinal overlap
Longitudinal overlap
The overlapping part of the longitudinal edges of each layer.
Bottom overlap
Bottom overlap
The overlapping part of the transverse edges of the bag tube after the bottom is formed. 2.9
A reserved opening for filling the contents and preventing the contents from flowing back after filling. Note: The valve port is usually located at a corner of the packaging bag. 2.10
valve sleeve
Made of woven fabric, other tough materials or a composite material of these materials, added to the valve mouth to improve its performance. iiKaeei
3 Types
flat sack
Flat edge bag
A packaging bag made from a flat edge bag tube.
Note: Including two types with or without longitudinal overlap3.2
Glimmer bag
Gusseted sack
A packaging bag made from a gusseted bag tube.
Note: Including two types with or without longitudinal overlap. 3.3
Sewn sack
Sewn sack
Sewn sack
A packaging sack closed at one or both ends by continuous transverse sewing with sewing thread 3.4
Adhesive sack
Pasted sack
A packaging sack closed at one or both ends by adhesive 3.5
Heat sealed sack
Heat sealed sack
A packaging sack closed at one or both ends by continuous transverse heat sealing 2
Open sack
Loose sack
Openmouth sack
A packaging sack closed at only one end.
Flat-sewn open sack
Open mouth-sewn-flat sack
A flat-sewn sack closed at one end by continuous transverse sewing with sewing thread, see Figure 1. Figure 1 Flat-sewn open sack
Frill-sewn open sack
Openmouth-sewn-gusseted sack is a gusseted sack that is continuously sewn horizontally with sutures to make one end closed, see Figure 2. rii
Figure 2 Frill-sewn open sack
Flat-edge glued open sack
Open mouth-pasted-flat sack
A flat-edge sack that is continuously glued horizontally with a bottom sealing strip to make one end closed, see Figure 3. 3 Flat-edge glued open sack
Hexagonal bottom flat-edge glued open sack
Openmouth-pasted-flathexagonal bottomsack is a flat-edge sack that is folded and glued to form a hexagonal shape and closed at one end, see Figure 4. GB/T 17858.3—2020
GB/T17858.3—2020
Figure 4 Hexagonal bottom flat edge glued open bag/hexagonal bottom flat edge heat-sealed open bag 3.6.5
Rectangular bottom gusseted glued open bag
Openmouth-pasted-gusseted rectangular bottom sack A gusseted bag that is folded and glued to form a rectangular closed end, see Figure 5. Figure 5 Rectangular bottom hem adhesive open bag/rectangular bottom hem heat-sealed open bag 3.6.6
Hexagonal bottom flat edge heat-sealed open bag
Openmouth-heat sealed-flathexagonal bottom sack A flat edge bag that is folded and heat-sealed to form a hexagonal shape at one end, see Figure 4. 3.6.7
Rectangular bottom hem heat-sealed open bag
Openmouth-heat sealed-gusseted rectangular bottom sack A hem bag that is folded and heat-sealed to form a rectangular shape at one end, see Figure 5. 3.7
Valved sack
Valved sack
A packaging bag that is closed at both ends and has a valve at one end. 3.7.1
Flat-sewn valve sack
valved-sewn flat sack
A flat-sewn sack with two ends closed by continuous transverse sewing with sutures, one end of which is provided with a valve, see Figure 6. Figure 6 Flat-sewn valve sack
Gauze-sewn valve sack
valved-sewn-gusseted sack
A gauze-sewn valve sack with two ends closed by continuous transverse sewing with sutures, one end of which is provided with a valve, see Figure 7. !
Figure 7 Gauze-sewn valve sack
valved-pasted-flat hexagonal ends sackvalved-pasted-squareends sackvalved-pasted-square-bottomed valve sack
A flat-sewn sack with two ends closed by folding and gluing, one end of which is provided with a valve, see Figure 8. Wide mouth
GB/T17858.3—2020
Figure 8 Hexagonal flat-edge adhesive valve bag/hexagonal flat-edge heat-sealed valve bag 3.7.4
Hexagonal flat-edge heat-sealed valve bag
valved-heatsealed-flathexagonal endssackSquare bottom heat-sealed valve bag
valved-heat sealed-square ends sackFlat-edge bag that is folded and heat-sealed to form hexagonal ends, with a valve at one end, see Figure 8.4 Construction details
Suture closure
Simple sewn closure
simple sewn closure
The bag tube is closed only with sutures, see Figure 9.
Note: This includes the form in which the bottom of the bag tube is folded and closed with sutures. GB/T17858.3—2020
Description:
1—Suture:
2—Bag wall.
Tape-suture closure (tape under suture line) Figure 9 Simple suture closure
taped and sewn closure (tape under sewing) Place the bottom tape at the end of the bag tube, and fix it with adhesive or heat sealing if necessary, and then pass through the tape for sewing closure, see Figure 10.
Note: Suture can be with or without lining rope. 4
Description:
1—Suture:
2—Bag wall:
3—Tape;
4—lining rope:
Adhesion or heat sealing.
Tape-stitched closure
Sewn and taped closure (tape over stitching) Sewn and taped closure (tape over stitching) The bag tube is sewn closed and covered with a backing tape, fixed with adhesive or by heat sealing, see Figure 11. Note: Sewing can be with or without lining rope. 6
Description:
1—sewing:
2—bag wall;
3—tape:
adhesion or heat sealing.
Chain stitch (single thread sewing)
Sewn-tape closure
chain stitch (single thread sewing) GB/T17858.3—2020
A method of sewing with a single stitching thread, the stitching thread passes through the bag tube to form an annular circle, and each annular circle is locked by the previous annular circle, see Figure 12.
Warp side
Loop test
Chain stitching (single thread sewing)
Double locked stitch (double thread sewing)
Double locked stitch (double thread sewing) A method of sewing with two sutures, one suture passes through the bag tube to form an annular ring, and each annular ring is locked by the transverse annular ring formed by the other thread, see Figure 13.
Association line
Annular line
Adhesive closure and heat-sealed closure
Simple pasted closure
Simple adhesive closure
Double locked stitch (double thread sewing)
One or both ends of the bag tube are overlapped and closed with adhesive, see Figure 14. GB/T17858.3—2020
Explanation:
1——Bag wall:
Adhesive or heat-sealed.
Figure 14 Simple adhesive closure
Simple heat-sealed closure
simpleheatsealedclosure
One or both ends of the bag tube are overlapped and then closed by heat sealing, see Figure 14. 4.2.3
Reinforced adhesive closure
reinforced pasted closure
One or both ends of the bag tube are overlapped and then bonded together with the reinforced bottom cover and (or) bottom liner using adhesive to close, see Figure 15. Note:
1—bag wall:
2——bonding or heat sealing:
3——bottom cover.
Reinforced heat sealed closure
Reinforced adhesive closure
reinforced heat sealed closure
One end or both ends of the bag tube are overlapped and closed with the reinforced bottom cover and (or) bottom liner by heat sealing, see Figure 15. 4.3 Valve mouth
Sewn bag valve mouthbzxZ.net
Simple valve mouth (sewn bag)
simple valve (sewn sack)
Valve mouth without valve sleeve or reinforcement structure, see Figure 16. 8
Internal sleeve valve mouth (sewn bag)
Figure 16 Simple valve mouth
internal sleeve valve (sewn sack) Valve mouth with the valve sleeve extending into the interior of the packaging bag, see Figure 17. Figure 17
External sleeve valve (sewn sack)
Internal sleeve valve
External sleeve valve (sewn sack) Valve sleeve protrudes from the packaging bag, see Figure 18. Figure 18
4.3.2 Pasted bag and heat sealed bag valve
Simple valve (pasted bag and heat sealed bag) Pasted valve
GB/T17858.3—2020
Simple valve (pasted sack and heat sealed sack) Valve without valve sleeve or reinforcement structure, see Figure 19. Figure 19 Simple valve3—2020
Description:
1—Suture:
2—Bag wall.
Tape-suture closure (tape under suture line) Figure 9 Simple suture closure
taped and sewn closure (tape under sewing) Place the bottom tape at the end of the bag tube, fix it with adhesive or heat seal if necessary, and then pass through the tape for suture closure, see Figure 10.
Note: Suture can be with or without lining rope. 4
Description:
1—Suture:
2—Bag wall:
3—Tape;
4—lining rope:
Adhesion or heat seal.
Tape-stitched closure
Sewn and taped closure (tape over stitching) sewn and taped closure (tape over stitching) The bag tube is sewn closed and covered with a backing tape, fixed with adhesive or by heat sealing, see Figure 11. Note: Sewing can be with or without lining rope. 6
Description:
1—sewing:
2—bag wall;
3—tape:
adhesion or heat sealing.
Chain stitch (single thread sewing)
Sewn-tape closure
chain stitch (single thread sewing) GB/T17858.3—2020
A method of sewing with a single stitching thread, the stitching thread passes through the bag tube to form an annular circle, and each annular circle is locked by the previous annular circle, see Figure 12.
Warp side
Loop test
Chain stitching (single thread sewing)
Double locked stitch (double thread sewing)
Double locked stitch (double thread sewing) A method of sewing with two sutures, one suture passes through the bag tube to form an annular ring, and each annular ring is locked by the transverse annular ring formed by the other thread, see Figure 13.
Association line
Annular line
Adhesive closure and heat-sealed closure
Simple pasted closure
Simple adhesive closure
Double locked stitch (double thread sewing)
One or both ends of the bag tube are overlapped and closed with adhesive, see Figure 14. GB/T17858.3—2020
Explanation:
1——Bag wall:
Adhesive or heat-sealed.
Figure 14 Simple adhesive closure
Simple heat-sealed closure
simpleheatsealedclosure
One or both ends of the bag tube are overlapped and then closed by heat sealing, see Figure 14. 4.2.3
Reinforced adhesive closure
reinforced pasted closure
One or both ends of the bag tube are overlapped and then bonded together with the reinforced bottom cover and (or) bottom liner using adhesive to close, see Figure 15. Note:
1—bag wall:
2——bonding or heat sealing:
3——bottom cover.
Reinforced heat sealed closure
Reinforced adhesive closure
reinforced heat sealed closure
One or both ends of the bag tube are overlapped and closed with the reinforced bottom cover and (or) bottom liner by heat sealing, see Figure 15. 4.3 Valve mouth
Sewn bag valve mouth
Simple valve mouth (sewn bag)
simple valve (sewn sack)
Valve mouth without valve sleeve or reinforcement structure, see Figure 16. 8
Internal sleeve valve mouth (sewn bag)
Figure 16 Simple valve mouth
internal sleeve valve (sewn sack) Valve mouth with the valve sleeve extending into the interior of the packaging bag, see Figure 17. Figure 17
External sleeve valve (sewn sack)
Internal sleeve valve
External sleeve valve (sewn sack) Valve sleeve protrudes from the packaging bag, see Figure 18. Figure 18
4.3.2 Pasted bag and heat sealed bag valve
Simple valve (pasted bag and heat sealed bag) Pasted valve
GB/T17858.3—2020
Simple valve (pasted sack and heat sealed sack) Valve without valve sleeve or reinforcement structure, see Figure 19. Figure 19 Simple valve3—2020
Description:
1—Suture:
2—Bag wall.
Tape-suture closure (tape under suture line) Figure 9 Simple suture closure
taped and sewn closure (tape under sewing) Place the bottom tape at the end of the bag tube, fix it with adhesive or heat seal if necessary, and then pass through the tape for suture closure, see Figure 10.
Note: Suture can be with or without lining rope. 4
Description:
1—Suture:
2—Bag wall:
3—Tape;
4—lining rope:
Adhesion or heat seal.
Tape-stitched closure
Sewn and taped closure (tape over stitching) sewn and taped closure (tape over stitching) The bag tube is sewn closed and covered with a backing tape, fixed with adhesive or by heat sealing, see Figure 11. Note: Sewing can be with or without lining rope. 6
Description:
1—sewing:
2—bag wall;
3—tape:
adhesion or heat sealing.
Chain stitch (single thread sewing)
Sewn-tape closure
chain stitch (single thread sewing) GB/T17858.3—2020
A method of sewing with a single stitching thread, the stitching thread passes through the bag tube to form an annular circle, and each annular circle is locked by the previous annular circle, see Figure 12.
Warp side
Loop test
Chain stitching (single thread sewing)
Double locked stitch (double thread sewing)
Double locked stitch (double thread sewing) A method of sewing with two sutures, one suture passes through the bag tube to form an annular ring, and each annular ring is locked by the transverse annular ring formed by the other thread, see Figure 13.
Association line
Annular line
Adhesive closure and heat-sealed closure
Simple pasted closure
Simple adhesive closure
Double locked stitch (double thread sewing)
One or both ends of the bag tube are overlapped and closed with adhesive, see Figure 14. GB/T17858.3—2020
Explanation:
1——Bag wall:
Adhesive or heat-sealed.
Figure 14 Simple adhesive closure
Simple heat-sealed closure
simpleheatsealedclosure
One or both ends of the bag tube are overlapped and then closed by heat sealing, see Figure 14. 4.2.3
Reinforced adhesive closure
reinforced pasted closure
One or both ends of the bag tube are overlapped and then bonded together with the reinforced bottom cover and (or) bottom liner using adhesive to close, see Figure 15. Note:
1—bag wall:
2——bonding or heat sealing:
3——bottom cover.
Reinforced heat sealed closure
Reinforced adhesive closure
reinforced heat sealed closure
One or both ends of the bag tube are overlapped and closed with the reinforced bottom cover and (or) bottom liner by heat sealing, see Figure 15. 4.3 Valve mouth
Sewn bag valve mouth
Simple valve mouth (sewn bag)
simple valve (sewn sack)
Valve mouth without valve sleeve or reinforcement structure, see Figure 16. 8
Internal sleeve valve mouth (sewn bag)
Figure 16 Simple valve mouth
internal sleeve valve (sewn sack) Valve mouth with the valve sleeve extending into the interior of the packaging bag, see Figure 17. Figure 17
External sleeve valve (sewn sack)
Internal sleeve valve
External sleeve valve (sewn sack) Valve sleeve protrudes from the packaging bag, see Figure 18. Figure 18
4.3.2 Pasted bag and heat sealed bag valve
Simple valve (pasted bag and heat sealed bag) Pasted valve
GB/T17858.3—2020
Simple valve (pasted sack and heat sealed sack) Valve without valve sleeve or reinforcement structure, see Figure 19. Figure 19 Simple valve
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