Plastic high-resistance composite woven bag and preparing method

A high-barrier, woven bag technology, applied to chemical instruments and methods, bags, sacks, etc., can solve the problems of inability to realize industrial production, short durability of composite bags, and high cost

Active Publication Date: 2017-08-04
常州斯开龙包装机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem actually solved by the present invention is to overcome the problems in the prior art that plastic composite woven bags are artificially bagged in order to realize the sealing effect of the inner pac

Method used

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  • Plastic high-resistance composite woven bag and preparing method
  • Plastic high-resistance composite woven bag and preparing method
  • Plastic high-resistance composite woven bag and preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] 1, figure 1 It is a schematic structural view of the plastic high barrier composite woven bag of Example 1, wherein 1 is the first welding line, 2 is the second welding line, 3 is the third welding line, and 4 is the fourth welding line; L1 is the first length, L2 is the width of the first welding line, L3 is the width of the second welding line, L4 is the second length, L5 is the width of the third welding line, L6 is the width of the fourth welding line, L7 is the third length, L8 is The fourth length, L9 is the length of the plastic high barrier composite woven bag, and L10 is the width of the plastic high barrier composite woven bag.

[0066] In this embodiment, the width of the first welding line and the fourth welding line is 8mm (relative to figure 1 L2, L6 in); the distance between "the second welding line or the fourth welding line" and the edge of the plastic high-barrier composite woven bag is 5mm independently (relative to figure 1 L1, L7 in); the above...

Embodiment 2

[0091] 1, Figure 4 It is a structural schematic diagram of the plastic high-barrier composite woven bag of Example 2; wherein, 5 is the handle hole, 6 is the fifth welding line, 7 is the sixth welding line, 8 is the seventh welding line, and 9 is the eighth welding line, 10 is the ninth welding line; L11 is the fifth length, L12 is the width of the fifth welding line, L13 is the width of the seventh welding line, L14 is the width of the sixth welding line, L15 is the sixth length, L16 is the seventh length , L17 is the eighth length, L18 is the width of the eighth welding line, L19 is the width of the ninth welding line, L20 is the ninth length, L21 is the tenth length, L22 is the length of the plastic high barrier composite woven bag, L23 is the plastic The width of the high-barrier composite woven bag; R1 is the eleventh length, R2 is the length of the handle hole, R3 is the width of the handle hole, and R4 is the twelfth length.

[0092] In this embodiment, the width of t...

Embodiment 3

[0120] Compared with Example 1, the plastic high-barrier composite woven bag of this embodiment lacks the propylene-ethylene polymer resin layer 12. Correspondingly, a polyurethane adhesive layer is formed in the middle of the woven bag body 16 and the composite layer; other product structures are the same as Embodiment 1 is all the same.

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Abstract

The invention discloses a plastic high-resistance composite woven bag and a preparing method. The method comprises the following steps that firstly, one of three sub-steps is selected to be conducted, wherein I, a resin layer is formed on the outer surface of a woven bag body through the extrusion flow casting coating technology; II, a resin layer is formed on the outer surface of the woven bag body and the middle of a BOPP film through extrusion flow casting composite heat seal connection; and III, the woven bag body is provided; secondly, through dry type composite connection, a polyurethane bonding agent layer is formed on the part between the resin layer in the substep I or the BOPP film in the substep II or the woven bag body in the substep III and the film or the composite layer, and a high-resistance composite woven bag barrel bag is manufactured; and thirdly, a bag opening or bag bottom of the barrel bag is subjected to ultrasonic welding. According to the plastic high-resistance composite woven bag, ultrasonic welding sealing is adopted, the layers are coordinative, actions of water and oxygen in air can be avoided, and the functions of water preventing, mould preventing, insect preventing and fresh keeping sealing are achieved; and the obstruction and sealing performance of the woven bag can be improved.

Description

technical field [0001] The invention relates to a plastic high-barrier composite woven bag and a preparation method thereof. Background technique [0002] The plastic composite woven bag in the prior art is composed of the following three-layer structure: the first layer is a polypropylene woven bag body, the third layer is a BOPP film layer, and the second layer is an adhesive layer; wherein, the second layer The bonding layer adopts propylene ethylene polymer resin to cast, extrude, heat and press to bond the first layer of polypropylene woven bag body and the third layer of BOPP film layer. The mouth of the plastic composite woven bag is sealed with cotton thread after crimping, and if the seam is not sealed, it can only be used for ordinary packaging. [0003] The bottom of the plastic composite woven bag is sealed with paper-plastic hot-melt adhesive. Its purpose is to play the role of waterproof, moisture-proof, and mildew-proof, so that rice, coarse grains, beans, gr...

Claims

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Application Information

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IPC IPC(8): B65D30/08B32B1/02B32B27/06B32B27/08B32B27/12B32B27/32B32B27/34B32B27/36B32B7/12B32B33/00B32B37/12B32B37/06B32B37/10
CPCB32B1/02B32B5/02B32B7/12B32B27/08B32B27/12B32B27/32B32B27/34B32B27/36B32B33/00B32B37/06B32B37/10B32B37/12B32B2250/24B32B2255/02B32B2255/10B32B2255/26B32B2262/0253B32B2307/7145B32B2307/7244B32B2307/7265B32B2439/06B65D31/04
Inventor 吴建国
Owner 常州斯开龙包装机械有限公司
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