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Method for closing a tubular bag and bag with a tubular bag

A bag body and bag technology, applied in bags, sacks, bag making operations, etc., can solve the problems of high cost and heavy bags, and achieve the effects of low cost, fast working speed and simple processing

Inactive Publication Date: 2017-06-09
洛西亚有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another disadvantage of this method is that it requires the fabric to have a certain minimum strength or the fabric coating to be thick enough to allow welding
This results in a relatively heavy bag and a higher cost

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Method for closing a tubular bag and bag with a tubular bag
  • Method for closing a tubular bag and bag with a tubular bag
  • Method for closing a tubular bag and bag with a tubular bag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] figure 1 The tubular bag body 1 is shown in a flat state, the bottom 2 of which is designed to form a box-shaped bag by folding the bottom. The bottom fold has two flaps 3 folded from two opposite narrow sides of the bag body 1 and two flaps 4 to be folded from two opposite wide edges of the bag body 1 along folded edges 5 . After the flap 4 is folded inwardly, the figure 2 The state shown in which the ends of the flap 4 folded inwards from the wide sides overlap each other, the ends of the flap 4 are indicated by dotted lines. In general, with regard to the drawings, it should be noted that the covered sides are indicated by dotted lines, and the folded sides are indicated by dotted lines.

[0025]In order to close the bottom 2 , the two flaps 4 folded over the broad sides of said bottom 2 are welded together in their overlapping region along a seam 7 . The flap 4 is also welded to its underlying flap 3 folded over the narrow side of the bottom 2 along two weld se...

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PUM

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Abstract

Method for closing a tubular bag body made of a uniaxially stretched polymer, especially polyolefin or polypropylene tape fabric, comprising forming a bottom fold such that the bag has a substantially rectangular bottom, at least two of which are Two at least partially overlapping layers are welded together by at least one weld in their overlapping region to close said bag, said at least one weld being at least the length of the broad side and / or narrow side of said rectangular bottom extend.

Description

technical field [0001] The present invention relates to a method for closing a tubular bag made of a fabric of uniaxially stretched polymer tape, especially polyolefin or polypropylene tape, the method comprising forming a bottom fold such that the bag Basically has a rectangular bottom. [0002] The invention also relates to a bag having a tubular body made of a uniaxially stretched polymer tape fabric, especially polyolefin or polypropylene tape, at least one end of the bag having a bottom fold such that the bag Has a substantially rectangular base. [0003] The tubular body of such bags is usually made of tubular circular material or of flat material with longitudinal edges joined together to form a tube. Such bags are roughly divided into pillow-shaped and box-shaped. Pillow bags are usually formed by forming a textile seam or weld at the bottom. The present invention relates to box-shaped bags having at least one end with a bottom fold such that the bag has a substant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D30/18B29C65/02B31B70/60
CPCB29C65/02B29C65/08B29C66/1122B29C66/21B29C66/221B29C66/223B29C66/43121B29C66/71B29C66/73712B29C66/8511B65D31/08B29C65/16B29C66/30621B29C66/8341B29C66/83411B31B70/64B31B2150/00B31B2155/00B31B2160/20B31B70/642B31B2155/003B29C66/723B31B2150/003B31B2150/0014B29K2023/00B29K2023/12
Inventor 赫尔维戈·沃尔夫恩奈斯托·斯科柏斯伯格
Owner 洛西亚有限公司