DE102015201954A1 - Stand-up pouch for pre-portioned packs - Google Patents

Abstract

A sturdy bag for holding washing and / or cleaning agents, comprising a cavity (2) delimited by at least one side wall (3) and a bottom wall (4), characterized in that the bottom wall (4) has an inspection area (7) for the detection of Liquid, when in contact with the inner side of the bottom wall (4), and wherein the side wall (3) is opaque.

Description

The invention relates to a sturdy bag for holding washing and / or cleaning agents with improved properties.

State of the art

In the field of detergents and cleaners, a number of different dosage forms of corresponding products is known. Above all, freely dosable liquid, granular and / or pulverulent preparations have prevailed. One way of packaging such products is the sturdy bag, also known as stand-up pouches.

It is known to populate bags with a non-transparent layer to protect the contents from light. Light could damage the content immediately if it is sensitive to light. However, visual quality control after packaging a product in such a bag is no longer possible.

The object of the invention is therefore to provide a bag which has improved properties, in particular a bag on the optical quality controls are possible.

This object is achieved by a bag having the features of claim 1.

The invention relates to a stable bag for receiving washing and / or cleaning agent, comprising a limited by at least one side wall and a bottom wall cavity. The bottom wall has an inspection area for detecting liquid when in contact with the inner side of the bottom wall, in the inspection area. Furthermore, the side wall is opaque.

The invented bag is a stand-up pouch made from a film composite. The bag is preferably made from a single cut (ie, integral) of the film composite, for this purpose, the bottom portion can be folded according to W-shaped, as it is z. In the document GB1413549 A (Robert Bosch GMBH, published 12 Nov. 1975) is described, and the sides can be closed, preferably sealed, preferably sealed by welding.

According to one embodiment of the invention, it is provided that the inspection area is transparent. This can be done a visual inspection. The stand-up bag has the advantage that it has an intended position with which the floor is always directed downwards, thus the floor is protected from light in ordinary applications such as on the supermarket shelf.

According to one embodiment of the invention, it is provided that the inspection area is translucent. Preferably, the inspection area is designed in such a way that a wetting of liquid, preferably of a surfactant-containing liquid, reveals a color and / or color intensity contrast. Translucent means translucent but not translucent.

The optically relevant details of the invention are under ordinary conditions, therefore under normal room lighting 1000 lux, ISO 3664 standard illuminant A , non-direct lighting, where observers look from the outside to the inside of the bag.

It is provided that the inspection region has a transmittance (T) in the entire visible wavelength range of more than 0.5, preferably of more than 0.8. It is also contemplated that the sidewall will have a transmittance throughout the UV + visible wavelength range of less than 0.1, preferably less than 0.01.

Preferably, it is provided for all embodiments of the invention that the bag is formed from a one-piece film composite. The film composite is folded into a bag and sealed or closed, preferably sealed after being filled with product. Thus, the bag can be made by a few steps from a film web.

According to one embodiment of the invention, it is provided that the bag comprises at least one second side wall, wherein the two side walls are materially connected in the edge region along its side edges to form protruding side edge strips. It is preferred that the bottom wall is W-shaped.

According to one embodiment of the invention, it is provided that the film composite comprises a printing layer. Information on the print layer is printed for the consumer so that they are visible from the outside of the bag.

According to one embodiment of the invention, it is provided that the printing layer is completely printed in the region of the side wall. According to an alternative but preferred embodiment of the invention, it is provided that the printing layer is printed incompletely in the region of the side wall, thus part of the metallized layer is used as background for the printing of the printing layer. This can save ink.

According to one embodiment of the invention, it is provided that the film composite comprises a metallized layer. The metallized layer lies further to the inside of the bag than the print layer.

According to one embodiment of the invention, it is provided that the metallized layer is a silver-printed layer.

According to a preferred embodiment of the invention, it is provided that the metallized layer comprises an aluminum layer, in particular a vacuum evaporated aluminum layer. The layer thickness of the aluminum layer is preferably between 30 nm and 200 nm, more preferably between 50 nm and 100 nm thick. The aluminum layer may be evaporated on a plastic film, preferably on a PET film. The evaporation can take place on a film web by continuously evaporating aluminum in vacuo or in a special gas mixture onto a film web; a strip, e.g. B. in the web running direction, are released in the bag forms the inspection area.

It is envisaged that the metallized layer in the bottom region is at least partially interrupted. The film composite comprises a metallization and preferably at least one strip which is free from metallization and thus forms the inspection area. The inspection area is located at the bottom of the bag. Preferably, the sides of the bag are completely metallized. In this case, the bag contents are protected by light, whereby an inspection of the contents through the ground in the inspection area is still possible.

According to one embodiment of the invention, it is provided that the film composite comprises at least the following films: (i) a printed PET film, and (ii) a melt film which is turned in the direction of the cavity of the bag. Preferably, the melt film is thicker than the PET film.

According to a preferred embodiment of the invention, it is provided that the metallized layer is arranged between the PET film and the melt film.

According to one embodiment of the invention, provision is made for the bag to contain at least one pre-portioned washing and / or cleaning agent pack which has at least one liquid composition.

The liquid composition is a composition which is flowable at a temperature of 20 ° C and at a pressure of 1 atm. Flowable gels are included. In a further development of the invention it is provided that the liquid composition comprise a brightener. Due to the luminescence of the brightener, the detection of liquid when it is in contact with the inner side of the bottom wall in the inspection area is facilitated by the enhanced contrast. Brighteners for liquid detergents are known, for. B. off DE2543998 or US4978475 ,

The bag according to the invention is particularly preferably used as outer packaging for packaged in smaller packages liquid compositions, so-called pouches, such as. In US 2014/0238889 A1 to be discribed. The effects of the invention are achieved especially with pre-portioned detergent and / or detergent packages, in particular water-soluble detergents and / or detergent pouches. It is therefore preferred that a bag according to the invention contains water-soluble pouches, in particular that at least one of the water-soluble pouches has a minimum wall thickness of less than 80 .mu.m, preferably the smallest wall thickness is between 20 .mu.m and 50 .mu.m. As a result, pouches can be produced with a low wall thickness, resulting in material savings and low environmental impact. Possible defect containing pouches can, for. B. after storage and / or transport, then sorted by a quality control.

The invention will be explained in more detail in the following, embodiments showing illustrations. Show in:

1 a section through the film composite ( 8th );

2 a section of the film composite ( 8th );

3 a W-shaped floor design; and in

4 an example of the soil with liquid composition.

1 shows a sectional view of the film composite ( 8th ), wherein the layer thicknesses are not necessarily shown in the same scale to improve the representability. Between the melting foil ( 17 ) leading to the inside of the bag ( 1 ) and the PET film ( 16 ) leading to the outside of the bag ( 1 ), the metallized layer ( 20 ) and the print layer ( 12 ).

A view of a section of the film composite ( 8th ) with the bag ( 1 ) is manufactured in 2 to see. The film composite ( 8th ) is in the areas ( 20 ) Metallized and in the area ( 7 ) free of metallization. The area ( 7 ) forms the inspection area at the bottom of the bag.

The bottom is preferably made by folding in "W-shape" as in 3 will be shown. The film composite ( 8th ) folded so that the side walls ( 3 ) and the ground ( 9 ) a cavity ( 2 ) form. The floor ( 9 ) of the bag is towards the cavity ( 2 ) folded and held together flush. For example, the film composite on the areas 17 to the the melt layer (or melt film), by removing the other layers of the film composite ( 8th ) released to the outside is joined by welding together the melt layer with the melt layer. This can also take place at the same time sealing the side edge strips.

4 shows a floor ( 9 ) with the inspection area ( 7 ) and two to the inspection area ( 7 ) adjacent metallized areas ( 20 ). The drops of the liquid composition ( 19 ) on the left side are in the inspection area ( 7 ) good to see. On the right is a liquid composition ( 19 ) to see the good wettability with the melt film ( 17 ) having. In both cases, the liquid composition ( 19 ), if the inspection area ( 7 ) is transparent even if the inspection area ( 7 ) is translucent, z. B. by a way printed layer. In the case where the inspection area ( 7 ) is not transparent, the liquid composition ( 19 ), yet recognizable by the luminance and / or color contrast.

LIST OF REFERENCE NUMBERS

1

Stable bag

2

cavity

3

Side wall

4

bottom wall

5

Surface of the sidewall

6

Surface of the bottom wall

7

inspection area

8th

film composite

9

ground

3

sidewalls

10

side edges

11

Side margins

12

print layer

13

silver

14

aluminum layer

15

Vacuum evaporated aluminum layer

16

PET film

17

melting foil

18

pack

19

liquid composition

20

metallized layer

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• GB 1413549 A [0007]
• DE 2543998 [0023]
• US 4978475 [0023]
• US 2014/0238889 A1 [0024]

Cited non-patent literature

• ISO 3664 standard illuminant A [0010]

Claims (14)

Stable bag ( 1 ) for receiving washing and / or cleaning agents, comprising one through at least one side wall ( 3 ) and a bottom wall ( 4 ) limited cavity ( 2 ), characterized in that the bottom wall ( 4 ) an inspection area ( 7 ) for detecting liquid when in contact with the inner side of the bottom wall ( 4 ), and wherein the side wall ( 3 ) is opaque. Bag according to one of the preceding claims, wherein the inspection area ( 7 ) is transparent. Bag according to one of the preceding claims, wherein the inspection area ( 7 ) is translucent. Bag according to one of the preceding claims, the bag ( 1 ) from a one-piece film composite ( 8th ) was formed. Bag according to one of the preceding claims, comprising at least one second side wall ( 3 ), the two side walls ( 3 ) in the edge region along their side edges ( 10 ) forming protruding marginal margins ( 11 ) are materially connected, and preferably the bottom wall ( 4 ) Is W-shaped. A pouch according to any one of the preceding claims wherein the film composite comprises a print layer. Bag according to one of the preceding claims, wherein the printing layer is completely printed in the region of the side wall. Bag according to one of the preceding claims, wherein the film composite ( 8th ) comprises a metallized layer. Bag according to one of the preceding claims, wherein the metallised layer ( 20 ) one with silver ( 13 ) is printed layer. Bag according to one of the preceding claims, wherein the metallised layer ( 20 ) an aluminum layer ( 15 ), in particular a vacuum-evaporated aluminum layer ( 15 ). Bag according to one of the preceding claims, wherein the metallised layer ( 20 ) is at least partially interrupted in the floor area. Bag according to one of the preceding claims, wherein the film composite ( 8th ) comprises at least the following films: (i) a printed PET film ( 16 ), and (ii) a melt film ( 17 ), the direction cavity ( 2 ) is turned. A bag according to any one of the preceding claims, wherein the metallized layer (12) is sandwiched between the PET film (14). 16 ) and the melt film ( 17 ) is arranged. Bag according to one of the preceding claims, the bag ( 1 ) at least one, preferably several, pre-portioned washing and / or cleaning agent pack (s) ( 18 ), preferably one (several) water-soluble pack (s) containing (each) at least one liquid composition ( 19 ) having.

Images