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A strip tape, a packaging container having such a strip tape, and a method of producing such a strip tape

A technology for packaging containers and strips, which is applied in the fields of strips, packaging containers with the strips, and the manufacture of the strips, and can solve problems such as damage to the strip structure.

Inactive Publication Date: 2007-05-23
TETRA LAVAL HLDG & FINANCE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the co-extruded tape structure of PP / tie / EVOH / tape / PP blown film and the co-extruded tape structure of PP / tape / PA / tape / PP blown film are both Causes damage to the strip structure near the edge of the packaging material

Method used

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  • A strip tape, a packaging container having such a strip tape, and a method of producing such a strip tape
  • A strip tape, a packaging container having such a strip tape, and a method of producing such a strip tape
  • A strip tape, a packaging container having such a strip tape, and a method of producing such a strip tape

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Embodiment Construction

[0050] The preferred strip 36 according to the invention and as shown in FIG. 1 is of symmetrical construction 10 and is made by adhesive lamination of three prefabricated films 12 , 14 , 16 . The prefabricated core layer 12 has a thickness of 12 μm and is made of a biaxially oriented PET film.

[0051] The outwardly facing surface of the strip 10 consists of PP partial layers 14a and 16a which have been co-extruded and blown together with grafted PP partial layers 14b and 16b respectively to form 25 μm pre-films 14 and 16 respectively. The grafted PP partial layers 14b and 16b each directly face an adhesive layer 18, 20 and are suitable for proper adhesion to these adhesive layers due to the grafted character of the PP partial layers 14b, 16b. Examples of properly functioning PP grades are: Inspire 112 from Dow, Inspire 114 from Dow, Borclear RB707CF from Borealis, RB501BF from Borealis, BA110CF from Borealis, Daploy from Borealis SF203HMS, PP4352F1 from Exxon Mobil or PPH30...

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Abstract

A strip tape (36), having a structure (10) of, in order, the following layers: a first layer (14) with an outwardly facing surface of polypropylene (PP), a first adhesive layer (18), a core layer (12) of an oxygen barrier polymer, a second adhesive layer (20), a second layer (16) with an outwardly facing surface of polypropylene (PP). The invention also comprises a packaging container provided with the strip tape to protect a longitudinal joint of the container, on the inside thereof. The invention also relates to a method of producing the strip tape.

Description

technical field [0001] The present invention relates to a strip and to a packaging container having a container body made of packaging material comprising a core layer of paper or cardboard and an outer heat-seal layer of polypropylene (PP), the packaging container having a longitudinal seam in which the first and second longitudinal edges of the packaging material overlap each other and are heat-sealed to each other so that said first longitudinal edge faces the interior of the container body, said first longitudinal edge being formed according to the present invention Protected by a strip that is heat-sealed in the area of ​​the seams. The invention also relates to a method of manufacturing the strip. Background technique [0002] WO2003SE01793 describes a packaging container for liquid food which utilizes a heat seal produced by induction. The packaging container includes first and second container parts heat sealed to each other. The first part is tubular and formed f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D65/40B32B27/32B32BB65D35/10
CPCY10T428/31913B65D15/08B32B1/08B32B27/34Y10T428/31938Y10T428/31786B32B27/36B32B7/12B32B27/08Y10T428/31551B32B2307/518Y10T428/31855B32B27/32B32B2250/05B32B27/10Y10T428/31725B32B2439/60B32B2307/7244B65D65/42Y10T428/269B65D3/28B32B2250/24B32B3/02B65D65/40
Inventor 莫妮卡·祖皮格霍坎·奥尔松英厄马尔·拉松
Owner TETRA LAVAL HLDG & FINANCE SA
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