Device for folding and bolding plastic-laminated pre-cut blanks

A technology of plastic layers and blanks, applied in the field of devices for folding and combining plastic laminated pre-cut blanks, which can solve problems such as combustion furnace deformation, overheating, and system complexity, and achieve the effect of preventing deformation

Inactive Publication Date: 2008-05-28
FORTUNA SPEZIALMASCHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, this system is very complex and it is difficult for this system to guarantee a sufficiently selective heating of the blank at very high throughput speeds
[0014] One idea is to use a furnace for direct heating of the billet, this would allow a significantly higher temperature output, the billet could be heated directly by a flame, but the problem with this technical solution is that the square furnace through which the billet must pass is easily produced Local overheating, and the heat tends to deform such a furnace, resulting in failure to guarantee the required accuracy

Method used

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  • Device for folding and bolding plastic-laminated pre-cut blanks
  • Device for folding and bolding plastic-laminated pre-cut blanks
  • Device for folding and bolding plastic-laminated pre-cut blanks

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Embodiment Construction

[0049] An apparatus for folding and bonding plastic laminated pre-cut blanks according to the invention is shown schematically in FIG. 1 and is indicated generally by the reference numeral 10 .

[0050] The pre-cut blanks 32 are PE-laminated paperboard blanks which are folded and joined to make beverage packaging. The sides of the blank (which later form the inside of the package to be manufactured) are all coated with a thin layer of polyethylene coating. The blanks 32 are conveyed by the conveying device 12 through the different work stations 14 , 16 , 18 , 20 , 22 of the device 10 at a transit speed of several hundred meters per minute or even approximately 1000 meters per minute. The conveyor 12 includes belts 24, 26 driven by rollers 28, 30 for moving batches therebetween. In FIG. 1 , only a few rollers 28 are schematically shown above the conveyor belt 24 only at the entrance of the device 10 , and a few rollers 30 are schematically shown below the conveyor belt 26 . H...

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Abstract

The device (10) has a peeling station (14) for selective peeling of a plastic covering of a pre-cut part (32). A grooving station (16) produces a folding line. A heating station (18) is provided for the selective heating of covering. A folding station (20) folds the part around the line. A pressing station (22) presses and glues a folded part. A transport device (12) conveys the part through the stations, where the heating station has a burner with an elongated combustion chamber, which has flaming openings arranged one behind the other in an axial direction and has a cooling body.

Description

technical field [0001] The present invention relates to a device for folding and bonding plastic laminated pre-cut blanks, in particular PE-laminated cardboard packaging for beverages. Background technique [0002] Beverage packaging for milk and fruit beverages is manufactured from plastic laminated pre-cut blanks, in particular from polyethylene (PE) coated blanks. [0003] In order to make a closed package from this kind of blank, the blank needs to be folded several times and closed by bonding. Further, the side surfaces bonded to the opposite surfaces must undergo an operation known as pre-folding in order to guarantee food registration for the package. In the step of performing the pre-folding, the plastic layer is first peeled off and then, after being folded around the pre-formed fold line, bonded to the adjacent part of the blank by applying pressure, by locally heating the plastic layer to a sufficient degree. [0004] Thus, the folding and joining devices known ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B31B1/26B31B1/64F23C5/08B31B50/64
CPCB31B2201/61B31B1/64B31B2201/6026B31B7/00B31B2217/0038B31B2201/00B31B1/00B31B1/74B31B50/00B31B50/64B31B2120/40B31B2105/00B31B50/741
Inventor 戴尔特·施普兰德尔汉斯·拉斯尼格马库斯·霍夫曼维纳尔·沃汀格
Owner FORTUNA SPEZIALMASCHEN
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